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linux/tools/perf/util/intel-pt.c

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 263 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.208660670@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-29 07:18:02 -07:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Including missing inttypes.h header Needed to use the PRI[xu](32,64) formatting macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-wkbho8kaw24q67dd11q0j39f@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-17 15:23:08 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf debug: Remove needless include directives from debug.h All we need there is a forward declaration for 'union perf_event', so remove it from there and add missing header directives in places using things from this indirect include. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-7ftk0ztstqub1tirjj8o8xbl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-29 16:18:59 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
tools lib: Adopt zalloc()/zfree() from tools/perf Eroding a bit more the tools/perf/util/util.h hodpodge header. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-natazosyn9rwjka25tvcnyi0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-04 11:32:27 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf memswap: Split the byteswap memory range wrappers from util.[ch] Just one more step into splitting util.[ch] to reduce the includes hell. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-navarr9mijkgwgbzu464dwam@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-25 15:45:35 -03:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf config: Move config declarations from util/cache.h to util/config.h Lately util/config.h has been added but util/cache.h has declarations of functions and a global variable for config features. To manage codes about configuration at one spot, move them to util/config.h and let source files that need config features include config.h And if the source files that included previous cache.h need only config.h, remove including cache.h. Signed-off-by: Taeung Song <treeze.taeung@gmail.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1466672119-4852-2-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 17:55:17 +09:00
perf tools: Move routines that probe for perf API features to separate file Trying to disentangle this a bit further, unfortunately it uses parse_events(), its interesting to have it separated anyway, so do it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-05 11:49:08 -03:00
perf tools: Move event synthesizing routines to separate header Those are the only routines using the perf_event__handler_t typedef and are all related, so move to a separate header to reduce the header dependency tree, lots of places were getting event.h and even stdio.h, limits.h indirectly, so fix those as well. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-yvx9u1mf7baq6cu1abfhbqgs@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-18 11:36:13 -03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add gp registers to synthesized PEBS sample Add general purpose register information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:59 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add mispred-all config option to aid use with autofdo autofdo incorrectly expects branch flags to include either mispred or predicted. In fact mispred = predicted = 0 is valid and means the flags are not supported, which they aren't by Intel PT. To make autofdo work, add a config option which will cause Intel PT decoder to set the mispred flag on all branches. Below is an example of using Intel PT with autofdo. The example is also added to the Intel PT documentation. It requires autofdo (https://github.com/google/autofdo) and gcc version 5. The bubble sort example is from the AutoFDO tutorial (https://gcc.gnu.org/wiki/AutoFDO/Tutorial) amended to take the number of elements as a parameter. $ gcc-5 -O3 sort.c -o sort_optimized $ ./sort_optimized 30000 Bubble sorting array of 30000 elements 2254 ms $ cat ~/.perfconfig [intel-pt] mispred-all $ perf record -e intel_pt//u ./sort 3000 Bubble sorting array of 3000 elements 58 ms [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 3.939 MB perf.data ] $ perf inject -i perf.data -o inj --itrace=i100usle --strip $ ./create_gcov --binary=./sort --profile=inj --gcov=sort.gcov -gcov_version=1 $ gcc-5 -O3 -fauto-profile=sort.gcov sort.c -o sort_autofdo $ ./sort_autofdo 30000 Bubble sorting array of 30000 elements 2155 ms Note there is currently no advantage to using Intel PT instead of LBR, but that may change in the future if greater use is made of the data. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-26-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:56 +03:00
perf intel-pt: Consolidate thread-stack use condition The components of the condition do not change, so consolidate them in one variable. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:44 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Prepare to synthesize PEBS samples Add infrastructure to prepare for synthesizing PEBS samples but leave the actual synthesis to later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:56 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf intel-pt: Prepare to synthesize PEBS samples Add infrastructure to prepare for synthesizing PEBS samples but leave the actual synthesis to later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:56 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Pass Intel PT information for decoding MTC and CYC Record additional information in the AUXTRACE_INFO event in preparation for decoding MTC and CYC packets. Pass the information to the decoder. The AUXTRACE_INFO record can be extended by using the size to indicate the presence of new members. The additional information includes PMU config bit positions and the TSC to CTC (hardware crystal clock) ratio needed to decode MTC packets. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-20-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:54 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf tools: Add support for skipping itrace instructions When using 'perf script' to look at PT traces it is often useful to ignore the initialization code at the beginning. On larger traces which may have many millions of instructions in initialization code doing that in a pipeline can be very slow, with perf script spending a lot of CPU time calling printf and writing data. This patch adds an extension to the --itrace argument that skips 'n' events (instructions, branches or transactions) at the beginning. This is much more efficient. v2: Add support for BTS (Adrian Hunter) Document in itrace.txt Fix branch check Check transactions and instructions too Committer note: To test intel_pt one needs to make sure VT-x isn't active, i.e. stopping KVM guests on the test machine, as described by Andi Kleen at http://lkml.kernel.org/r/20160301234953.GD23621@tassilo.jf.intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1459187142-20035-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-28 10:45:38 -07:00
perf intel-pt: Read address filter from AUXTRACE_INFO event Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:46 +03:00
perf intel-pt: Fix decoding when there are address filters Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:48 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy old_buffer handling in intel_pt_get_trace() intel_pt_get_trace() fixes overlaps between the current buffer and the previous buffer ('old_buffer'). However the previous buffer might not have had usable data (no PSB) so the comparison must be made against the previous buffer that had usable data. Tidy that by keeping a pointer for that purpose in struct intel_pt_queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:27 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Fix Intel PT 'instructions' sample period The period on synthesized 'instructions' samples was being set to a fixed value, whereas the correct value is the number of instructions since the last sample, which is a value that the decoder can provide. So do it that way. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:48 +03:00
perf intel-pt: Add support for samples to contain IPC ratio Copy the incremental instruction count and cycle count onto 'instructions' and 'branches' samples. Because Intel PT does not update the cycle count on every branch or instruction, the incremental values will often be zero. When there are values, they will be the number of instructions and number of cycles since the last update, and thus represent the average IPC since the last IPC value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-20 14:37:13 +03:00
perf intel-pt: Synthesize CBR events when last seen value changes The first core-to-bus ratio (CBR) event will not be shown if --itrace 's' option (skip initial number of events) is used, nor if time intervals are specified that do not include the start of tracing. Change the logic to record the last CBR value seen by the user, and synthesize CBR events whenever that changes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190622093248.581-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-22 12:32:45 +03:00
perf intel-pt/bts: Report instruction bytes and length in sample Change Intel PT and BTS to pass up the length and the instruction bytes of the decoded or sampled instruction in the perf sample. The decoder already knows this information, we just need to pass it up. Since it is only a couple of movs it is not very expensive. Handle instruction cache too. Make sure ilen is always initialized. Used in the next patch. [Adrian: re-base on top (and adjust for) instruction buffer size tidy-up] [Adrian: add BTS support and adjust commit message accordingly] Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-07 16:42:26 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add new packets for PEBS via PT Add 3 new packets to supports PEBS via PT, namely Block Begin Packet (BBP), Block Item Packet (BIP) and Block End Packet (BEP). PEBS data is encoded into multiple BIP packets that come between BBP and BEP. The BEP packet might be associated with a FUP packet. That is indicated by using a separate packet type (INTEL_PT_BEP_IP) similar to other packets types with the _IP suffix. Refer to the Intel SDM for more information about PEBS via PT: https://software.intel.com/en-us/articles/intel-sdm May 2019 version: Vol. 3B 18.5.5.2 PEBS output to Intel® Processor Trace Decoding of BIP packets conflicts with single-byte TNT packets. Since BIP packets only occur in the context of a block (i.e. between BBP and BEP), that context must be recorded and passed to the packet decoder. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:53 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add new packets for PEBS via PT Add 3 new packets to supports PEBS via PT, namely Block Begin Packet (BBP), Block Item Packet (BIP) and Block End Packet (BEP). PEBS data is encoded into multiple BIP packets that come between BBP and BEP. The BEP packet might be associated with a FUP packet. That is indicated by using a separate packet type (INTEL_PT_BEP_IP) similar to other packets types with the _IP suffix. Refer to the Intel SDM for more information about PEBS via PT: https://software.intel.com/en-us/articles/intel-sdm May 2019 version: Vol. 3B 18.5.5.2 PEBS output to Intel® Processor Trace Decoding of BIP packets conflicts with single-byte TNT packets. Since BIP packets only occur in the context of a block (i.e. between BBP and BEP), that context must be recorded and passed to the packet decoder. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:53 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add more event information to debug log More event information is useful for debugging, especially MMAP events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/20181105073505.8129-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-11-05 09:35:04 +02:00
perf script: Show text poke address symbol It is generally more useful to show the symbol with an address. In this case, the print function requires the 'machine' which means changing callers to provide it as a parameter. It is optional because most events do not need it and the callers that matter can provide it. Committer notes: Made 'union perf_event' continue to be the first parameter to the perf_event__fprintf() and perf_event__fprintf_text_poke() events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20200512121922.8997-16-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-12 15:19:22 +03:00
perf intel-pt: Add more event information to debug log More event information is useful for debugging, especially MMAP events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/20181105073505.8129-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-11-05 09:35:04 +02:00
perf intel-pt: Add support for decoding AUX area samples Add support for dumping, queuing and decoding AUX area samples. Decoding samples is the same as regular decoding, except in the case where there are no timestamps, in which case buffers are decoded immediately before the sample event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-15 14:42:24 +02:00
perf intel-pt: Time filter logged perf events Change the debug logging (when used with the --time option) to time filter logged perf events, but allow that to be overridden by using "d+a" instead of plain "d". That can reduce the size of the log file. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:11:01 +03:00
perf intel-pt: Use itrace debug log flags to suppress some messages The "d" option may be followed by flags which affect what debug messages will or will not be logged. Each flag must be preceded by either '+' or '-'. The flags support by Intel PT are: -a Suppress logging of perf events Suppressing perf events is useful for decreasing the size of the log. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:11:00 +03:00
perf intel-pt: Time filter logged perf events Change the debug logging (when used with the --time option) to time filter logged perf events, but allow that to be overridden by using "d+a" instead of plain "d". That can reduce the size of the log file. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:11:01 +03:00
perf intel-pt: Use itrace debug log flags to suppress some messages The "d" option may be followed by flags which affect what debug messages will or will not be logged. Each flag must be preceded by either '+' or '-'. The flags support by Intel PT are: -a Suppress logging of perf events Suppressing perf events is useful for decreasing the size of the log. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:11:00 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix overlap detection to identify consecutive buffers correctly Overlap detection was not not updating the buffer's 'consecutive' flag. Marking buffers consecutive has the advantage that decoding begins from the start of the buffer instead of the first PSB. Fix overlap detection to identify consecutive buffers correctly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:21 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix overlap detection to identify consecutive buffers correctly Overlap detection was not not updating the buffer's 'consecutive' flag. Marking buffers consecutive has the advantage that decoding begins from the start of the buffer instead of the first PSB. Fix overlap detection to identify consecutive buffers correctly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:21 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix overlap detection to identify consecutive buffers correctly Overlap detection was not not updating the buffer's 'consecutive' flag. Marking buffers consecutive has the advantage that decoding begins from the start of the buffer instead of the first PSB. Fix overlap detection to identify consecutive buffers correctly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:21 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out intel_pt_get_buffer() Factor out intel_pt_get_buffer() so it can be reused. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:07 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Adjust overlap-checking to support sampling mode Adjust overlap-checking to support sampling mode. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Rename struct perf_data_file to perf_data Rename struct perf_data_file to perf_data, because we will add the possibility to have multiple files under perf.data, so the 'perf_data' name fits better. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Changbin Du <changbin.du@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-39wn4d77phel3dgkzo3lyan0@git.kernel.org [ Fixup recent changes in 'perf script --per-event-dump' ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-23 22:07:59 +01:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Adjust overlap-checking to support sampling mode Adjust overlap-checking to support sampling mode. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Adjust overlap-checking to support sampling mode Adjust overlap-checking to support sampling mode. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out intel_pt_get_buffer() Factor out intel_pt_get_buffer() so it can be reused. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:07 +03:00
perf intel-pt: Add support for lookahead Implement the lookahead callback to let the decoder access subsequent buffers. intel_pt_lookahead() manages the buffer lifetime and calls the decoder for each buffer until the decoder returns a non-zero value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:08 +03:00
perf intel-pt: Factor out intel_pt_get_buffer() Factor out intel_pt_get_buffer() so it can be reused. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:07 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy old_buffer handling in intel_pt_get_trace() intel_pt_get_trace() fixes overlaps between the current buffer and the previous buffer ('old_buffer'). However the previous buffer might not have had usable data (no PSB) so the comparison must be made against the previous buffer that had usable data. Tidy that by keeping a pointer for that purpose in struct intel_pt_queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:27 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy old_buffer handling in intel_pt_get_trace() intel_pt_get_trace() fixes overlaps between the current buffer and the previous buffer ('old_buffer'). However the previous buffer might not have had usable data (no PSB) so the comparison must be made against the previous buffer that had usable data. Tidy that by keeping a pointer for that purpose in struct intel_pt_queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:27 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Report instruction bytes and length in sample Change Intel PT and BTS to pass up the length and the instruction bytes of the decoded or sampled instruction in the perf sample. The decoder already knows this information, we just need to pass it up. Since it is only a couple of movs it is not very expensive. Handle instruction cache too. Make sure ilen is always initialized. Used in the next patch. [Adrian: re-base on top (and adjust for) instruction buffer size tidy-up] [Adrian: add BTS support and adjust commit message accordingly] Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-07 16:42:26 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Report instruction bytes and length in sample Change Intel PT and BTS to pass up the length and the instruction bytes of the decoded or sampled instruction in the perf sample. The decoder already knows this information, we just need to pass it up. Since it is only a couple of movs it is not very expensive. Handle instruction cache too. Make sure ilen is always initialized. Used in the next patch. [Adrian: re-base on top (and adjust for) instruction buffer size tidy-up] [Adrian: add BTS support and adjust commit message accordingly] Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-07 16:42:26 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for text poke events Select text poke events when available and the kernel is being traced. Process text poke events to invalidate entries in Intel PT's instruction cache. Example: The example requires kernel config: CONFIG_PROC_SYSCTL=y CONFIG_SCHED_DEBUG=y CONFIG_SCHEDSTATS=y Before: # perf record -o perf.data.before --kcore -a -e intel_pt//k -m,64M & # cat /proc/sys/kernel/sched_schedstats 0 # echo 1 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 1 # echo 0 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 0 # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 3.341 MB perf.data.before ] [1]+ Terminated perf record -o perf.data.before --kcore -a -e intel_pt//k -m,64M # perf script -i perf.data.before --itrace=e >/dev/null Warning: 474 instruction trace errors After: # perf record -o perf.data.after --kcore -a -e intel_pt//k -m,64M & # cat /proc/sys/kernel/sched_schedstats 0 # echo 1 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 1 # echo 0 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 0 # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 2.646 MB perf.data.after ] [1]+ Terminated perf record -o perf.data.after --kcore -a -e intel_pt//k -m,64M # perf script -i perf.data.after --itrace=e >/dev/null Example: The example requires kernel config: # CONFIG_FUNCTION_TRACER is not set Before: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __schedule Added new event: probe:__schedule (on __schedule) You can now use it in all perf tools, such as: perf record -e probe:__schedule -aR sleep 1 # perf record -e probe:__schedule -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.026 MB perf.data (68 samples) ] # perf probe -d probe:__schedule Removed event: probe:__schedule # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 41.268 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null Warning: 207 instruction trace errors After: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __schedule Added new event: probe:__schedule (on __schedule) You can now use it in all perf tools, such as: perf record -e probe:__schedule -aR sleep 1 # perf record -e probe:__schedule -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.028 MB perf.data (107 samples) ] # perf probe -d probe:__schedule Removed event: probe:__schedule # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 39.978 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null # perf script -i t1 --no-itrace -D | grep 'POKE\|KSYMBOL' 6 565303693547 0x291f18 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc027a000 len 4096 type 2 flags 0x0 name kprobe_insn_page 6 565303697010 0x291f68 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027a000 old len 0 new len 6 6 565303838278 0x291fa8 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc027c000 len 4096 type 2 flags 0x0 name kprobe_optinsn_page 6 565303848286 0x291ff8 [0xa0]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027c000 old len 0 new len 106 6 565369336743 0x292af8 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffff88ab8890 old len 5 new len 5 7 566434327704 0x217c208 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffff88ab8890 old len 5 new len 5 6 566456313475 0x293198 [0xa0]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027c000 old len 106 new len 0 6 566456314935 0x293238 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027a000 old len 6 new len 0 Example: The example requires kernel config: CONFIG_FUNCTION_TRACER=y Before: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __kmalloc Added new event: probe:__kmalloc (on __kmalloc) You can now use it in all perf tools, such as: perf record -e probe:__kmalloc -aR sleep 1 # perf record -e probe:__kmalloc -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.022 MB perf.data (6 samples) ] # perf probe -d probe:__kmalloc Removed event: probe:__kmalloc # kill %1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 43.850 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null Warning: 8 instruction trace errors After: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __kmalloc Added new event: probe:__kmalloc (on __kmalloc) You can now use it in all perf tools, such as: perf record -e probe:__kmalloc -aR sleep 1 # perf record -e probe:__kmalloc -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.037 MB perf.data (206 samples) ] # perf probe -d probe:__kmalloc Removed event: probe:__kmalloc # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 41.442 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null # perf script -i t1 --no-itrace -D | grep 'POKE\|KSYMBOL' 5 312216133258 0x8bafe0 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc0360000 len 415 type 2 flags 0x0 name ftrace_trampoline 5 312216133494 0x8bb030 [0x1d8]: PERF_RECORD_TEXT_POKE addr 0xffffffffc0360000 old len 0 new len 415 5 312216229563 0x8bb208 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 5 312216239063 0x8bb248 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 5 312216727230 0x8bb288 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffabbea190 old len 5 new len 5 5 312216739322 0x8bb2c8 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 5 312216748321 0x8bb308 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 7 313287163462 0x2817430 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 7 313287174890 0x2817470 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 7 313287818979 0x28174b0 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffabbea190 old len 5 new len 5 7 313287829357 0x28174f0 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 7 313287841246 0x2817530 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20200512121922.8997-14-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-12 15:19:20 +03:00
perf intel-pt/bts: Calculate cpumode for synthesized samples In the absence of a fallback, samples must provide a correct cpumode for the 'ip'. Do that now there is no fallback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181031091043.23465-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-10-31 11:10:43 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Tidy instruction buffer size usage Tidy instruction buffer size usage in preparation for copying the instruction bytes onto samples. The instruction buffer is presently used for debugging, so rename its size macro from INTEL_PT_INSN_DBG_BUF_SZ to INTEL_PT_INSN_BUF_SZ, and use it everywhere. Note that the maximum instruction size is 15 which is a less efficient size to copy than 16, which is why a separate buffer size is used. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-07 16:42:25 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Report instruction bytes and length in sample Change Intel PT and BTS to pass up the length and the instruction bytes of the decoded or sampled instruction in the perf sample. The decoder already knows this information, we just need to pass it up. Since it is only a couple of movs it is not very expensive. Handle instruction cache too. Make sure ilen is always initialized. Used in the next patch. [Adrian: re-base on top (and adjust for) instruction buffer size tidy-up] [Adrian: add BTS support and adjust commit message accordingly] Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-07 16:42:26 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Calculate cpumode for synthesized samples In the absence of a fallback, samples must provide a correct cpumode for the 'ip'. Do that now there is no fallback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181031091043.23465-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-10-31 11:10:43 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf thread: Make thread__find_map() return the map It was returning the searched map just on the addr_location passed, with the function itself returning void. Make it return the map so that we can make the code more compact. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-tzlrrzdeoof4i6ktyqv1t6ks@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-04-24 11:58:56 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Report instruction bytes and length in sample Change Intel PT and BTS to pass up the length and the instruction bytes of the decoded or sampled instruction in the perf sample. The decoder already knows this information, we just need to pass it up. Since it is only a couple of movs it is not very expensive. Handle instruction cache too. Make sure ilen is always initialized. Used in the next patch. [Adrian: re-base on top (and adjust for) instruction buffer size tidy-up] [Adrian: add BTS support and adjust commit message accordingly] Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-07 16:42:26 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf symbols: Remove symbol_filter_t machinery We're not using it anymore, few users were, but we really could do without it, simplify lots of functions by removing it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-1zng8wdznn00iiz08bb7q3vn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-01 19:25:52 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Tidy instruction buffer size usage Tidy instruction buffer size usage in preparation for copying the instruction bytes onto samples. The instruction buffer is presently used for debugging, so rename its size macro from INTEL_PT_INSN_DBG_BUF_SZ to INTEL_PT_INSN_BUF_SZ, and use it everywhere. Note that the maximum instruction size is 15 which is a less efficient size to copy than 16, which is why a separate buffer size is used. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-07 16:42:25 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix decoding when there are address filters Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:48 +03:00
perf thread: Make thread__find_map() return the map It was returning the searched map just on the addr_location passed, with the function itself returning void. Make it return the map so that we can make the code more compact. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-tzlrrzdeoof4i6ktyqv1t6ks@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-04-24 11:58:56 -03:00
perf intel-pt: Fix decoding when there are address filters Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:48 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 11:26:15 -03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 11:26:15 -03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Allow decoding with branch tracing disabled The kernel now supports the disabling of branch tracing, however the decoder assumes branch tracing is always enabled. Pass through a parameter to indicate whether branch tracing is enabled and use it to avoid cases when the decoder is expecting branch packets. There are 2 such cases. First, FUP packets which can bind to an IP even when there is no branch tracing. Secondly, the decoder will try to use branch packets to find an IP to start decoding or to recover from errors. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:11 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf intel-pt: Allow decoding with branch tracing disabled The kernel now supports the disabling of branch tracing, however the decoder assumes branch tracing is always enabled. Pass through a parameter to indicate whether branch tracing is enabled and use it to avoid cases when the decoder is expecting branch packets. There are 2 such cases. First, FUP packets which can bind to an IP even when there is no branch tracing. Secondly, the decoder will try to use branch packets to find an IP to start decoding or to recover from errors. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:11 +03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf intel-pt: Allow decoding with branch tracing disabled The kernel now supports the disabling of branch tracing, however the decoder assumes branch tracing is always enabled. Pass through a parameter to indicate whether branch tracing is enabled and use it to avoid cases when the decoder is expecting branch packets. There are 2 such cases. First, FUP packets which can bind to an IP even when there is no branch tracing. Secondly, the decoder will try to use branch packets to find an IP to start decoding or to recover from errors. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:11 +03:00
perf tools: Pass Intel PT information for decoding MTC and CYC Record additional information in the AUXTRACE_INFO event in preparation for decoding MTC and CYC packets. Pass the information to the decoder. The AUXTRACE_INFO record can be extended by using the size to indicate the presence of new members. The additional information includes PMU config bit positions and the TSC to CTC (hardware crystal clock) ratio needed to decode MTC packets. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-20-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:54 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Pass Intel PT information for decoding MTC and CYC Record additional information in the AUXTRACE_INFO event in preparation for decoding MTC and CYC packets. Pass the information to the decoder. The AUXTRACE_INFO record can be extended by using the size to indicate the presence of new members. The additional information includes PMU config bit positions and the TSC to CTC (hardware crystal clock) ratio needed to decode MTC packets. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-20-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:54 +03:00
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 11:26:15 -03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Pass Intel PT information for decoding MTC and CYC Record additional information in the AUXTRACE_INFO event in preparation for decoding MTC and CYC packets. Pass the information to the decoder. The AUXTRACE_INFO record can be extended by using the size to indicate the presence of new members. The additional information includes PMU config bit positions and the TSC to CTC (hardware crystal clock) ratio needed to decode MTC packets. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-20-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:54 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 11:26:15 -03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 11:26:15 -03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 11:26:15 -03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for decoding AUX area samples Add support for dumping, queuing and decoding AUX area samples. Decoding samples is the same as regular decoding, except in the case where there are no timestamps, in which case buffers are decoded immediately before the sample event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-15 14:42:24 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf intel-pt: Use allocated branch stack for PEBS sample To avoid having struct branch_stack as a non-last structure member, use allocated branch stack for PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/2540ed9a-89f1-6d59-10c9-a66cc90db5d2@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-16 15:35:48 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf intel-pt: Use allocated branch stack for PEBS sample To avoid having struct branch_stack as a non-last structure member, use allocated branch stack for PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/2540ed9a-89f1-6d59-10c9-a66cc90db5d2@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-16 15:35:48 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf intel-pt: Use allocated branch stack for PEBS sample To avoid having struct branch_stack as a non-last structure member, use allocated branch stack for PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/2540ed9a-89f1-6d59-10c9-a66cc90db5d2@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-16 15:35:48 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf intel-pt: Use allocated branch stack for PEBS sample To avoid having struct branch_stack as a non-last structure member, use allocated branch stack for PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/2540ed9a-89f1-6d59-10c9-a66cc90db5d2@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-16 15:35:48 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix "Unexpected indirect branch" error Some Atom CPUs can produce FUP packets that contain NLIP (next linear instruction pointer) instead of CLIP (current linear instruction pointer). That will result in "Unexpected indirect branch" errors. Fix by comparing IP to NLIP in that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1527762225-26024-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-05-31 13:23:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Use allocated branch stack for PEBS sample To avoid having struct branch_stack as a non-last structure member, use allocated branch stack for PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/2540ed9a-89f1-6d59-10c9-a66cc90db5d2@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-16 15:35:48 +03:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for lookahead Implement the lookahead callback to let the decoder access subsequent buffers. intel_pt_lookahead() manages the buffer lifetime and calls the decoder for each buffer until the decoder returns a non-zero value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:08 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Allow decoding with branch tracing disabled The kernel now supports the disabling of branch tracing, however the decoder assumes branch tracing is always enabled. Pass through a parameter to indicate whether branch tracing is enabled and use it to avoid cases when the decoder is expecting branch packets. There are 2 such cases. First, FUP packets which can bind to an IP even when there is no branch tracing. Secondly, the decoder will try to use branch packets to find an IP to start decoding or to recover from errors. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:11 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Pass Intel PT information for decoding MTC and CYC Record additional information in the AUXTRACE_INFO event in preparation for decoding MTC and CYC packets. Pass the information to the decoder. The AUXTRACE_INFO record can be extended by using the size to indicate the presence of new members. The additional information includes PMU config bit positions and the TSC to CTC (hardware crystal clock) ratio needed to decode MTC packets. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-20-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:54 +03:00
perf intel-pt: Add support for decoding FUP/TIP only Use the new itrace 'q' option to add support for a mode of decoding that ignores TNT, does not walk object code, but gets the ip from FUP and TIP packets. Example: $ perf record -e intel_pt//u grep -rI pudding drivers [ perf record: Woken up 52 times to write data ] [ perf record: Captured and wrote 57.870 MB perf.data ] $ time perf script --itrace=bi | wc -l 58948289 real 1m23.863s user 1m23.251s sys 0m7.452s $ time perf script --itrace=biq | wc -l 3385694 real 0m4.453s user 0m4.455s sys 0m0.328s Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:11:03 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix decoding when there are address filters Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:48 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf auxtrace: Fix 'instructions' period of zero Instruction tracing options (i.e. --itrace) include an option for sampling instructions at an arbitrary period. e.g. --itrace=i10us means make an 'instructions' sample for every 10us of trace. Currently the logic does not distinguish between a period of zero and no period being specified at all, so it gets treated as the default period which is 100000. That doesn't really make sense. Fix it so that zero period is accepted and treated as meaning "as often as possible". In the case of Intel PT that is the same as a period of 1 and a unit of 'instructions' (i.e. --itrace=i1i). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-2-git-send-email-adrian.hunter@intel.com [ Add a few lines describing this in the Documentation/intel-pt.txt file ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:32 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix "Unexpected indirect branch" error Some Atom CPUs can produce FUP packets that contain NLIP (next linear instruction pointer) instead of CLIP (current linear instruction pointer). That will result in "Unexpected indirect branch" errors. Fix by comparing IP to NLIP in that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1527762225-26024-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-05-31 13:23:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix "context_switch event has no tid" error A context_switch event can have no tid because pids can be detached from a task while the task is still running (in do_exit()). Note this won't happen with per-task contexts because then tracing stops at perf_event_exit_task() If a task with no tid gets preempted, or a dying task gets preempted and its parent releases it, when it subsequently gets switched back in, Intel PT will not be able to determine what task is running and prints an error "context_switch event has no tid". However, it is not really an error because the task is in kernel space and the decoder can continue to decode successfully. Fix by changing the error to be only a logged message, and make allowance for tid == -1. Example: Using 5.9-rc4 with Preemptible Kernel (Low-Latency Desktop) e.g. $ uname -r 5.9.0-rc4 $ grep PREEMPT .config # CONFIG_PREEMPT_NONE is not set # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y CONFIG_PREEMPT_COUNT=y CONFIG_PREEMPTION=y CONFIG_PREEMPT_RCU=y CONFIG_PREEMPT_NOTIFIERS=y CONFIG_DRM_I915_PREEMPT_TIMEOUT=640 CONFIG_DEBUG_PREEMPT=y # CONFIG_PREEMPT_TRACER is not set # CONFIG_PREEMPTIRQ_DELAY_TEST is not set Before: $ cat forkit.c #include <sys/types.h> #include <unistd.h> #include <sys/wait.h> int main() { pid_t child; int status = 0; child = fork(); if (child == 0) return 123; wait(&status); return 0; } $ gcc -o forkit forkit.c $ sudo ~/bin/perf record --kcore -a -m,64M -e intel_pt/cyc/k & [1] 11016 $ taskset 2 ./forkit $ sudo pkill perf $ [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 17.262 MB perf.data ] [1]+ Terminated sudo ~/bin/perf record --kcore -a -m,64M -e intel_pt/cyc/k $ sudo ~/bin/perf script --show-task-events --show-switch-events --itrace=iqqe-o -C 1 --ns | grep -C 2 forkit context_switch event has no tid taskset 11019 [001] 66663.270045029: 1 instructions:k: ffffffffb1d9f844 strnlen_user+0xb4 ([kernel.kallsyms]) taskset 11019 [001] 66663.270201816: 1 instructions:k: ffffffffb1a83121 unmap_page_range+0x561 ([kernel.kallsyms]) forkit 11019 [001] 66663.270327553: PERF_RECORD_COMM exec: forkit:11019/11019 forkit 11019 [001] 66663.270420028: 1 instructions:k: ffffffffb1db9537 __clear_user+0x27 ([kernel.kallsyms]) forkit 11019 [001] 66663.270648704: 1 instructions:k: ffffffffb18829e6 do_user_addr_fault+0xf6 ([kernel.kallsyms]) forkit 11019 [001] 66663.270833163: 1 instructions:k: ffffffffb230a825 irqentry_exit_to_user_mode+0x15 ([kernel.kallsyms]) forkit 11019 [001] 66663.271092359: 1 instructions:k: ffffffffb1aea3d9 lock_page_memcg+0x9 ([kernel.kallsyms]) forkit 11019 [001] 66663.271207092: PERF_RECORD_FORK(11020:11020):(11019:11019) forkit 11019 [001] 66663.271234775: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 11020/11020 forkit 11020 [001] 66663.271238407: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 forkit 11020 [001] 66663.271312066: 1 instructions:k: ffffffffb1a88140 handle_mm_fault+0x10 ([kernel.kallsyms]) forkit 11020 [001] 66663.271476225: PERF_RECORD_EXIT(11020:11020):(11019:11019) forkit 11020 [001] 66663.271497488: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11019/11019 forkit 11019 [001] 66663.271500523: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11020/11020 forkit 11019 [001] 66663.271517241: 1 instructions:k: ffffffffb24012cd error_entry+0x6d ([kernel.kallsyms]) forkit 11019 [001] 66663.271664080: PERF_RECORD_EXIT(11019:11019):(1386:1386) After: $ sudo ~/bin/perf script --show-task-events --show-switch-events --itrace=iqqe-o -C 1 --ns | grep -C 2 forkit taskset 11019 [001] 66663.270045029: 1 instructions:k: ffffffffb1d9f844 strnlen_user+0xb4 ([kernel.kallsyms]) taskset 11019 [001] 66663.270201816: 1 instructions:k: ffffffffb1a83121 unmap_page_range+0x561 ([kernel.kallsyms]) forkit 11019 [001] 66663.270327553: PERF_RECORD_COMM exec: forkit:11019/11019 forkit 11019 [001] 66663.270420028: 1 instructions:k: ffffffffb1db9537 __clear_user+0x27 ([kernel.kallsyms]) forkit 11019 [001] 66663.270648704: 1 instructions:k: ffffffffb18829e6 do_user_addr_fault+0xf6 ([kernel.kallsyms]) forkit 11019 [001] 66663.270833163: 1 instructions:k: ffffffffb230a825 irqentry_exit_to_user_mode+0x15 ([kernel.kallsyms]) forkit 11019 [001] 66663.271092359: 1 instructions:k: ffffffffb1aea3d9 lock_page_memcg+0x9 ([kernel.kallsyms]) forkit 11019 [001] 66663.271207092: PERF_RECORD_FORK(11020:11020):(11019:11019) forkit 11019 [001] 66663.271234775: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 11020/11020 forkit 11020 [001] 66663.271238407: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 forkit 11020 [001] 66663.271312066: 1 instructions:k: ffffffffb1a88140 handle_mm_fault+0x10 ([kernel.kallsyms]) forkit 11020 [001] 66663.271476225: PERF_RECORD_EXIT(11020:11020):(11019:11019) forkit 11020 [001] 66663.271497488: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11019/11019 forkit 11019 [001] 66663.271500523: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11020/11020 forkit 11019 [001] 66663.271517241: 1 instructions:k: ffffffffb24012cd error_entry+0x6d ([kernel.kallsyms]) forkit 11019 [001] 66663.271664080: PERF_RECORD_EXIT(11019:11019):(1386:1386) forkit 11019 [001] 66663.271688752: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: -1/-1 :-1 -1 [001] 66663.271692086: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 :-1 -1 [001] 66663.271707466: 1 instructions:k: ffffffffb18eb096 update_load_avg+0x306 ([kernel.kallsyms]) Fixes: 86c2786994bd7c ("perf intel-pt: Add support for PERF_RECORD_SWITCH") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Yu-cheng Yu <yu-cheng.yu@intel.com> Link: http://lore.kernel.org/lkml/20200909084923.9096-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-09 11:49:23 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Report instruction bytes and length in sample Change Intel PT and BTS to pass up the length and the instruction bytes of the decoded or sampled instruction in the perf sample. The decoder already knows this information, we just need to pass it up. Since it is only a couple of movs it is not very expensive. Handle instruction cache too. Make sure ilen is always initialized. Used in the next patch. [Adrian: re-base on top (and adjust for) instruction buffer size tidy-up] [Adrian: add BTS support and adjust commit message accordingly] Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-07 16:42:26 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add decoder flags for trace begin / end Previously, the decoder would indicate begin / end by a branch from / to zero. That hides useful information, in particular when a trace ends with a call. To prepare for remedying that, add Intel PT decoder flags for trace begin / end and map them to the existing sample flags. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20180920130048.31432-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-20 16:00:47 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Synthesize CBR events when last seen value changes The first core-to-bus ratio (CBR) event will not be shown if --itrace 's' option (skip initial number of events) is used, nor if time intervals are specified that do not include the start of tracing. Change the logic to record the last CBR value seen by the user, and synthesize CBR events whenever that changes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190622093248.581-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-22 12:32:45 +03:00
perf intel-pt: Get rid of intel_pt_use_buffer_pid_tid() With the new way sampling support will be implemented, intel_pt_use_buffer_pid_tid() will not be needed. Get rid of it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:26 +02:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf intel-pt: Synthesize CBR events when last seen value changes The first core-to-bus ratio (CBR) event will not be shown if --itrace 's' option (skip initial number of events) is used, nor if time intervals are specified that do not include the start of tracing. Change the logic to record the last CBR value seen by the user, and synthesize CBR events whenever that changes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190622093248.581-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-22 12:32:45 +03:00
perf intel-pt: Factor out common sample preparation for re-use Factor out common sample preparation for re-use when synthesizing PEBS samples. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:57 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf intel-pt: Factor out common sample preparation for re-use Factor out common sample preparation for re-use when synthesizing PEBS samples. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:57 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf intel-pt/bts: Calculate cpumode for synthesized samples In the absence of a fallback, samples must provide a correct cpumode for the 'ip'. Do that now there is no fallback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181031091043.23465-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-10-31 11:10:43 +02:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf intel-pt/bts: Calculate cpumode for synthesized samples In the absence of a fallback, samples must provide a correct cpumode for the 'ip'. Do that now there is no fallback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181031091043.23465-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-10-31 11:10:43 +02:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt/bts: Do not swap when synthesizing samples Both 'perf inject' and internal tools consume cpu endian samples, so there is never a need to do any swapping when synthesizing samples. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1516108492-21401-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-01-16 15:14:50 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Get rid of unused 'swapped' parameter from perf_event__synthesize_sample() There is never a need to synthesize a 'swapped' sample, so all callers to perf_event__synthesize_sample() pass 'false' as the value to 'swapped'. So get rid of the unused 'swapped' parameter. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1516108492-21401-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-01-16 15:14:52 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf intel-pt/bts: Do not swap when synthesizing samples Both 'perf inject' and internal tools consume cpu endian samples, so there is never a need to do any swapping when synthesizing samples. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1516108492-21401-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-01-16 15:14:50 +02:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf tools: Add hw_idx in struct branch_stack The low level index of raw branch records for the most recent branch can be recorded in a sample with PERF_SAMPLE_BRANCH_HW_INDEX branch_sample_type. Extend struct branch_stack to support it. However, if the PERF_SAMPLE_BRANCH_HW_INDEX is not applied, only nr and entries[] will be output by kernel. The pointer of entries[] could be wrong, since the output format is different with new struct branch_stack. Add a variable no_hw_idx in struct perf_sample to indicate whether the hw_idx is output. Add get_branch_entry() to return corresponding pointer of entries[0]. To make dummy branch sample consistent as new branch sample, add hw_idx in struct dummy_branch_stack for cs-etm and intel-pt. Apply the new struct branch_stack for synthetic events as well. Extend test case sample-parsing to support new struct branch_stack. Committer notes: Renamed get_branch_entries() to perf_sample__branch_entries() to have proper namespacing and pave the way for this to be moved to libperf, eventually. Add 'static' to that inline as it is in a header. Add 'hw_idx' to 'struct dummy_branch_stack' in cs-etm.c to fix the build on arm64. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Pavel Gerasimov <pavel.gerasimov@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Stephane Eranian <eranian@google.com> Cc: Vitaly Slobodskoy <vitaly.slobodskoy@intel.com> Link: http://lore.kernel.org/lkml/20200228163011.19358-2-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-28 08:30:00 -08:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Move branch filter logic intel_pt_synth_branch_sample() skips synthesizing if the branch does not match the branch filter. That logic was sitting in the middle of the function but is more efficiently placed at the start of the function, so move it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:44 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add support for skipping itrace instructions When using 'perf script' to look at PT traces it is often useful to ignore the initialization code at the beginning. On larger traces which may have many millions of instructions in initialization code doing that in a pipeline can be very slow, with perf script spending a lot of CPU time calling printf and writing data. This patch adds an extension to the --itrace argument that skips 'n' events (instructions, branches or transactions) at the beginning. This is much more efficient. v2: Add support for BTS (Adrian Hunter) Document in itrace.txt Fix branch check Check transactions and instructions too Committer note: To test intel_pt one needs to make sure VT-x isn't active, i.e. stopping KVM guests on the test machine, as described by Andi Kleen at http://lkml.kernel.org/r/20160301234953.GD23621@tassilo.jf.intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1459187142-20035-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-28 10:45:38 -07:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf tools: Add hw_idx in struct branch_stack The low level index of raw branch records for the most recent branch can be recorded in a sample with PERF_SAMPLE_BRANCH_HW_INDEX branch_sample_type. Extend struct branch_stack to support it. However, if the PERF_SAMPLE_BRANCH_HW_INDEX is not applied, only nr and entries[] will be output by kernel. The pointer of entries[] could be wrong, since the output format is different with new struct branch_stack. Add a variable no_hw_idx in struct perf_sample to indicate whether the hw_idx is output. Add get_branch_entry() to return corresponding pointer of entries[0]. To make dummy branch sample consistent as new branch sample, add hw_idx in struct dummy_branch_stack for cs-etm and intel-pt. Apply the new struct branch_stack for synthetic events as well. Extend test case sample-parsing to support new struct branch_stack. Committer notes: Renamed get_branch_entries() to perf_sample__branch_entries() to have proper namespacing and pave the way for this to be moved to libperf, eventually. Add 'static' to that inline as it is in a header. Add 'hw_idx' to 'struct dummy_branch_stack' in cs-etm.c to fix the build on arm64. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Pavel Gerasimov <pavel.gerasimov@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Stephane Eranian <eranian@google.com> Cc: Vitaly Slobodskoy <vitaly.slobodskoy@intel.com> Link: http://lore.kernel.org/lkml/20200228163011.19358-2-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-28 08:30:00 -08:00
perf intel-pt: Support generating branch stack Add support for generating branch stack context for PT samples. The decoder reports a configurable number of branches as branch context for each sample. Internally it keeps track of them by using a simple sliding window. We also flush the last branch buffer on each sample to avoid overlapping intervals. This is useful for: - Reporting accurate basic block edge frequencies through the perf report branch view - Using with --branch-history to get the wider context of samples - Other users of LBRs Also the Documentation is updated. Examples: Record with Intel PT: perf record -e intel_pt//u ls Branch stacks are used by default if synthesized so: perf report --itrace=ile is the same as: perf report --itrace=ile -b Branch history can be requested also: perf report --itrace=igle --branch-history Based-on-patch-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:45 +03:00
perf intel-pt: Add support for samples to contain IPC ratio Copy the incremental instruction count and cycle count onto 'instructions' and 'branches' samples. Because Intel PT does not update the cycle count on every branch or instruction, the incremental values will often be zero. When there are values, they will be the number of instructions and number of cycles since the last update, and thus represent the average IPC since the last IPC value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-20 14:37:13 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf thread-stack: Fix thread stack processing for the idle task perf creates a single 'struct thread' to represent the idle task. That is because threads are identified by PID and TID, and the idle task always has PID == TID == 0. However, there are actually separate idle tasks for each CPU. That creates a problem for thread stack processing which assumes that each thread has a single stack, not one stack per CPU. Fix that by passing through the CPU number, and in the case of the idle "thread", pick the thread stack from an array based on the CPU number. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20181221120620.9659-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-12-21 14:06:19 +02:00
perf intel-pt: Insert callchain context into synthesized callchains In the absence of a fallback, callchains must encode also the callchain context. Do that now there is no fallback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/100ea2ec-ed14-b56d-d810-e0a6d2f4b069@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-10-31 11:10:42 +02:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add support for skipping itrace instructions When using 'perf script' to look at PT traces it is often useful to ignore the initialization code at the beginning. On larger traces which may have many millions of instructions in initialization code doing that in a pipeline can be very slow, with perf script spending a lot of CPU time calling printf and writing data. This patch adds an extension to the --itrace argument that skips 'n' events (instructions, branches or transactions) at the beginning. This is much more efficient. v2: Add support for BTS (Adrian Hunter) Document in itrace.txt Fix branch check Check transactions and instructions too Committer note: To test intel_pt one needs to make sure VT-x isn't active, i.e. stopping KVM guests on the test machine, as described by Andi Kleen at http://lkml.kernel.org/r/20160301234953.GD23621@tassilo.jf.intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1459187142-20035-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-28 10:45:38 -07:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for decoding FUP/TIP only Use the new itrace 'q' option to add support for a mode of decoding that ignores TNT, does not walk object code, but gets the ip from FUP and TIP packets. Example: $ perf record -e intel_pt//u grep -rI pudding drivers [ perf record: Woken up 52 times to write data ] [ perf record: Captured and wrote 57.870 MB perf.data ] $ time perf script --itrace=bi | wc -l 58948289 real 1m23.863s user 1m23.251s sys 0m7.452s $ time perf script --itrace=biq | wc -l 3385694 real 0m4.453s user 0m4.455s sys 0m0.328s Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:11:03 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for samples to contain IPC ratio Copy the incremental instruction count and cycle count onto 'instructions' and 'branches' samples. Because Intel PT does not update the cycle count on every branch or instruction, the incremental values will often be zero. When there are values, they will be the number of instructions and number of cycles since the last update, and thus represent the average IPC since the last IPC value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-20 14:37:13 +03:00
perf tools: Fix Intel PT 'instructions' sample period The period on synthesized 'instructions' samples was being set to a fixed value, whereas the correct value is the number of instructions since the last sample, which is a value that the decoder can provide. So do it that way. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:48 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add support for skipping itrace instructions When using 'perf script' to look at PT traces it is often useful to ignore the initialization code at the beginning. On larger traces which may have many millions of instructions in initialization code doing that in a pipeline can be very slow, with perf script spending a lot of CPU time calling printf and writing data. This patch adds an extension to the --itrace argument that skips 'n' events (instructions, branches or transactions) at the beginning. This is much more efficient. v2: Add support for BTS (Adrian Hunter) Document in itrace.txt Fix branch check Check transactions and instructions too Committer note: To test intel_pt one needs to make sure VT-x isn't active, i.e. stopping KVM guests on the test machine, as described by Andi Kleen at http://lkml.kernel.org/r/20160301234953.GD23621@tassilo.jf.intel.com Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1459187142-20035-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-28 10:45:38 -07:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Factor out common code synthesizing event samples Factor out common code in functions synthesizing event samples i.e. intel_pt_synth_branch_sample(), intel_pt_synth_instruction_sample() and intel_pt_synth_transaction_sample(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-27-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:27 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Synthesize CBR events when last seen value changes The first core-to-bus ratio (CBR) event will not be shown if --itrace 's' option (skip initial number of events) is used, nor if time intervals are specified that do not include the start of tracing. Change the logic to record the last CBR value seen by the user, and synthesize CBR events whenever that changes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190622093248.581-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-22 12:32:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Synthesize CBR events when last seen value changes The first core-to-bus ratio (CBR) event will not be shown if --itrace 's' option (skip initial number of events) is used, nor if time intervals are specified that do not include the start of tracing. Change the logic to record the last CBR value seen by the user, and synthesize CBR events whenever that changes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190622093248.581-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-22 12:32:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Add gp registers to synthesized PEBS sample Add general purpose register information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:59 +03:00
perf intel-pt: Add XMM registers to synthesized PEBS sample Add XMM register information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:00 +03:00
perf intel-pt: Add LBR information to synthesized PEBS sample Add LBR information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:01 +03:00
perf callchain: Stitch LBR call stack In LBR call stack mode, the depth of reconstructed LBR call stack limits to the number of LBR registers. For example, on skylake, the depth of reconstructed LBR call stack is always <= 32. # To display the perf.data header info, please use # --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 6K of event 'cycles' # Event count (approx.): 6487119731 # # Children Self Command Shared Object Symbol # ........ ........ ............... .................. # ................................ 99.97% 99.97% tchain_edit tchain_edit [.] f43 | --99.64%--f11 f12 f13 f14 f15 f16 f17 f18 f19 f20 f21 f22 f23 f24 f25 f26 f27 f28 f29 f30 f31 f32 f33 f34 f35 f36 f37 f38 f39 f40 f41 f42 f43 For a call stack which is deeper than LBR limit, HW will overwrite the LBR register with oldest branch. Only partial call stacks can be reconstructed. However, the overwritten LBRs may still be retrieved from previous sample. At that moment, HW hasn't overwritten the LBR registers yet. Perf tools can stitch those overwritten LBRs on current call stacks to get a more complete call stack. To determine if LBRs can be stitched, perf tools need to compare current sample with previous sample. - They should have identical LBR records (Same from, to and flags values, and the same physical index of LBR registers). - The searching starts from the base-of-stack of current sample. Once perf determines to stitch the previous LBRs, the corresponding LBR cursor nodes will be copied to 'lists'. The 'lists' is to track the LBR cursor nodes which are going to be stitched. When the stitching is over, the nodes will not be freed immediately. They will be moved to 'free_lists'. Next stitching may reuse the space. Both 'lists' and 'free_lists' will be freed when all samples are processed. Committer notes: Fix the intel-pt.c initialization of the union with 'struct branch_flags', that breaks the build with its unnamed union on older gcc versions. Uninline thread__free_stitch_list(), as it grew big and started dragging includes to thread.h, so move it to thread.c where what it needs in terms of headers are already there. This fixes the build in several systems such as debian:experimental when cross building to the MIPS32 architecture, i.e. in the other cases what was needed was being included by sheer luck. In file included from builtin-sched.c:11: util/thread.h: In function 'thread__free_stitch_list': util/thread.h:169:3: error: implicit declaration of function 'free' [-Werror=implicit-function-declaration] 169 | free(pos); | ^~~~ util/thread.h:169:3: error: incompatible implicit declaration of built-in function 'free' [-Werror] util/thread.h:19:1: note: include '<stdlib.h>' or provide a declaration of 'free' 18 | #include "callchain.h" +++ |+#include <stdlib.h> 19 | util/thread.h:174:3: error: incompatible implicit declaration of built-in function 'free' [-Werror] 174 | free(pos); | ^~~~ util/thread.h:174:3: note: include '<stdlib.h>' or provide a declaration of 'free' Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Pavel Gerasimov <pavel.gerasimov@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Stephane Eranian <eranian@google.com> Cc: Vitaly Slobodskoy <vitaly.slobodskoy@intel.com> Link: http://lore.kernel.org/lkml/20200319202517.23423-13-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-19 13:25:12 -07:00
perf intel-pt: Add LBR information to synthesized PEBS sample Add LBR information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:01 +03:00
perf intel-pt: Synthesize PEBS sample basic information Synthesize a PEBS sample using basic information (ip, timestamp) only. Other PEBS information will be added in later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:58 +03:00
perf intel-pt: Prepare to synthesize PEBS samples Add infrastructure to prepare for synthesizing PEBS samples but leave the actual synthesis to later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:56 +03:00
perf intel-pt: Synthesize PEBS sample basic information Synthesize a PEBS sample using basic information (ip, timestamp) only. Other PEBS information will be added in later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:58 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
libperf: Move 'id' from 'struct evsel' to 'struct perf_evsel' Move the 'id' array from 'struct evsel' to libperf's 'struct perf_evsel'. Committer note: Fix the tools/perf/util/cs-etm.c build, i.e. aarch64's CoreSight. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-25-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-02 22:12:26 +02:00
perf intel-pt: Synthesize PEBS sample basic information Synthesize a PEBS sample using basic information (ip, timestamp) only. Other PEBS information will be added in later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:58 +03:00
perf intel-pt: Fix PEBS sample for XMM registers The condition to add XMM registers was missing, the regs array needed to be in the outer scope, and the size of the regs array was too small. Fixes: 143d34a6b387b ("perf intel-pt: Add XMM registers to synthesized PEBS sample") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Luwei Kang <luwei.kang@intel.com> Link: http://lore.kernel.org/lkml/20200630133935.11150-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-30 16:39:35 +03:00
perf intel-pt: Synthesize PEBS sample basic information Synthesize a PEBS sample using basic information (ip, timestamp) only. Other PEBS information will be added in later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:58 +03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf intel-pt: Synthesize PEBS sample basic information Synthesize a PEBS sample using basic information (ip, timestamp) only. Other PEBS information will be added in later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:58 +03:00
perf intel-pt: Add callchain to synthesized PEBS sample Like other synthesized events, if there is also an Intel PT branch trace, then a call stack can also be synthesized. Add that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:03 +03:00
perf intel-pt: Add gp registers to synthesized PEBS sample Add general purpose register information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:59 +03:00
perf intel-pt: Fix PEBS sample for XMM registers The condition to add XMM registers was missing, the regs array needed to be in the outer scope, and the size of the regs array was too small. Fixes: 143d34a6b387b ("perf intel-pt: Add XMM registers to synthesized PEBS sample") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Luwei Kang <luwei.kang@intel.com> Link: http://lore.kernel.org/lkml/20200630133935.11150-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-30 16:39:35 +03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf intel-pt: Add XMM registers to synthesized PEBS sample Add XMM register information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:00 +03:00
perf intel-pt: Add gp registers to synthesized PEBS sample Add general purpose register information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:59 +03:00
perf intel-pt: Add XMM registers to synthesized PEBS sample Add XMM register information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:00 +03:00
perf intel-pt: Add gp registers to synthesized PEBS sample Add general purpose register information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:59 +03:00
perf intel-pt: Add LBR information to synthesized PEBS sample Add LBR information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:01 +03:00
perf intel-pt: Use allocated branch stack for PEBS sample To avoid having struct branch_stack as a non-last structure member, use allocated branch stack for PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/2540ed9a-89f1-6d59-10c9-a66cc90db5d2@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-16 15:35:48 +03:00
perf intel-pt: Add LBR information to synthesized PEBS sample Add LBR information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:01 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Add LBR information to synthesized PEBS sample Add LBR information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:01 +03:00
perf intel-pt: Use allocated branch stack for PEBS sample To avoid having struct branch_stack as a non-last structure member, use allocated branch stack for PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/2540ed9a-89f1-6d59-10c9-a66cc90db5d2@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-16 15:35:48 +03:00
perf intel-pt: Add LBR information to synthesized PEBS sample Add LBR information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:01 +03:00
perf intel-pt: Use allocated branch stack for PEBS sample To avoid having struct branch_stack as a non-last structure member, use allocated branch stack for PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/2540ed9a-89f1-6d59-10c9-a66cc90db5d2@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-16 15:35:48 +03:00
perf intel-pt: Add LBR information to synthesized PEBS sample Add LBR information from PEBS data in the Intel PT trace to the synthesized PEBS sample. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:01 +03:00
perf intel-pt: Add memory information to synthesized PEBS sample Add memory information from PEBS data in the Intel PT trace to the synthesized PEBS sample. This provides sample types PERF_SAMPLE_ADDR, PERF_SAMPLE_WEIGHT, and PERF_SAMPLE_TRANSACTION, but not PERF_SAMPLE_DATA_SRC. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:02 +03:00
perf tools: Support PERF_SAMPLE_WEIGHT_STRUCT The new sample type, PERF_SAMPLE_WEIGHT_STRUCT, is an alternative of the PERF_SAMPLE_WEIGHT sample type. Users can apply either the PERF_SAMPLE_WEIGHT sample type or the PERF_SAMPLE_WEIGHT_STRUCT sample type to retrieve the sample weight, but they cannot apply both sample types simultaneously. The new sample type shares the same space as the PERF_SAMPLE_WEIGHT sample type. The lower 32 bits are exactly the same for both sample type. The higher 32 bits may be different for different architecture. Add arch specific arch_evsel__set_sample_weight() to set the new sample type for X86. Only store the lower 32 bits for the sample->weight if the new sample type is applied. In practice, no memory access could last than 4G cycles. No data will be lost. If the kernel doesn't support the new sample type. Fall back to the PERF_SAMPLE_WEIGHT sample type. There is no impact for other architectures. Committer notes: Fixup related to PERF_SAMPLE_CODE_PAGE_SIZE, present in acme/perf/core but not upstream yet. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/1612296553-21962-6-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-02-02 12:09:09 -08:00
perf intel-pt: Add memory information to synthesized PEBS sample Add memory information from PEBS data in the Intel PT trace to the synthesized PEBS sample. This provides sample types PERF_SAMPLE_ADDR, PERF_SAMPLE_WEIGHT, and PERF_SAMPLE_TRANSACTION, but not PERF_SAMPLE_DATA_SRC. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:02 +03:00
perf tools: Support PERF_SAMPLE_WEIGHT_STRUCT The new sample type, PERF_SAMPLE_WEIGHT_STRUCT, is an alternative of the PERF_SAMPLE_WEIGHT sample type. Users can apply either the PERF_SAMPLE_WEIGHT sample type or the PERF_SAMPLE_WEIGHT_STRUCT sample type to retrieve the sample weight, but they cannot apply both sample types simultaneously. The new sample type shares the same space as the PERF_SAMPLE_WEIGHT sample type. The lower 32 bits are exactly the same for both sample type. The higher 32 bits may be different for different architecture. Add arch specific arch_evsel__set_sample_weight() to set the new sample type for X86. Only store the lower 32 bits for the sample->weight if the new sample type is applied. In practice, no memory access could last than 4G cycles. No data will be lost. If the kernel doesn't support the new sample type. Fall back to the PERF_SAMPLE_WEIGHT sample type. There is no impact for other architectures. Committer notes: Fixup related to PERF_SAMPLE_CODE_PAGE_SIZE, present in acme/perf/core but not upstream yet. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/1612296553-21962-6-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-02-02 12:09:09 -08:00
perf report: Support instruction latency The instruction latency information can be recorded on some platforms, e.g., the Intel Sapphire Rapids server. With both memory latency (weight) and the new instruction latency information, users can easily locate the expensive load instructions, and also understand the time spent in different stages. The users can optimize their applications in different pipeline stages. The 'weight' field is shared among different architectures. Reusing the 'weight' field may impacts other architectures. Add a new field to store the instruction latency. Like the 'weight' support, introduce a 'ins_lat' for the global instruction latency, and a 'local_ins_lat' for the local instruction latency version. Add new sort functions, INSTR Latency and Local INSTR Latency, accordingly. Add local_ins_lat to the default_mem_sort_order[]. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/1612296553-21962-7-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-02-02 12:09:10 -08:00
perf tools: Support PERF_SAMPLE_WEIGHT_STRUCT The new sample type, PERF_SAMPLE_WEIGHT_STRUCT, is an alternative of the PERF_SAMPLE_WEIGHT sample type. Users can apply either the PERF_SAMPLE_WEIGHT sample type or the PERF_SAMPLE_WEIGHT_STRUCT sample type to retrieve the sample weight, but they cannot apply both sample types simultaneously. The new sample type shares the same space as the PERF_SAMPLE_WEIGHT sample type. The lower 32 bits are exactly the same for both sample type. The higher 32 bits may be different for different architecture. Add arch specific arch_evsel__set_sample_weight() to set the new sample type for X86. Only store the lower 32 bits for the sample->weight if the new sample type is applied. In practice, no memory access could last than 4G cycles. No data will be lost. If the kernel doesn't support the new sample type. Fall back to the PERF_SAMPLE_WEIGHT sample type. There is no impact for other architectures. Committer notes: Fixup related to PERF_SAMPLE_CODE_PAGE_SIZE, present in acme/perf/core but not upstream yet. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/1612296553-21962-6-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-02-02 12:09:09 -08:00
perf report: Support instruction latency The instruction latency information can be recorded on some platforms, e.g., the Intel Sapphire Rapids server. With both memory latency (weight) and the new instruction latency information, users can easily locate the expensive load instructions, and also understand the time spent in different stages. The users can optimize their applications in different pipeline stages. The 'weight' field is shared among different architectures. Reusing the 'weight' field may impacts other architectures. Add a new field to store the instruction latency. Like the 'weight' support, introduce a 'ins_lat' for the global instruction latency, and a 'local_ins_lat' for the local instruction latency version. Add new sort functions, INSTR Latency and Local INSTR Latency, accordingly. Add local_ins_lat to the default_mem_sort_order[]. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/1612296553-21962-7-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-02-02 12:09:10 -08:00
perf tools: Support PERF_SAMPLE_WEIGHT_STRUCT The new sample type, PERF_SAMPLE_WEIGHT_STRUCT, is an alternative of the PERF_SAMPLE_WEIGHT sample type. Users can apply either the PERF_SAMPLE_WEIGHT sample type or the PERF_SAMPLE_WEIGHT_STRUCT sample type to retrieve the sample weight, but they cannot apply both sample types simultaneously. The new sample type shares the same space as the PERF_SAMPLE_WEIGHT sample type. The lower 32 bits are exactly the same for both sample type. The higher 32 bits may be different for different architecture. Add arch specific arch_evsel__set_sample_weight() to set the new sample type for X86. Only store the lower 32 bits for the sample->weight if the new sample type is applied. In practice, no memory access could last than 4G cycles. No data will be lost. If the kernel doesn't support the new sample type. Fall back to the PERF_SAMPLE_WEIGHT sample type. There is no impact for other architectures. Committer notes: Fixup related to PERF_SAMPLE_CODE_PAGE_SIZE, present in acme/perf/core but not upstream yet. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/1612296553-21962-6-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-02-02 12:09:09 -08:00
perf intel-pt: Add memory information to synthesized PEBS sample Add memory information from PEBS data in the Intel PT trace to the synthesized PEBS sample. This provides sample types PERF_SAMPLE_ADDR, PERF_SAMPLE_WEIGHT, and PERF_SAMPLE_TRANSACTION, but not PERF_SAMPLE_DATA_SRC. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:28:02 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Prepare to synthesize PEBS samples Add infrastructure to prepare for synthesizing PEBS samples but leave the actual synthesis to later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:56 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf auxtrace: Add timestamp to auxtrace errors The timestamp can use useful to find part of a trace that has an error without outputting all of the trace e.g. using the itrace 's' option to skip initial number of events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190206103947.15750-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06 12:39:47 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Use itrace error flags to suppress some errors The itrace "e" option may be followed by flags which affect what errors will or will not be reported. Each flag must be preceded by either '+' or '-'. The flags supported by Intel PT are: -o Suppress overflow errors -l Suppress trace data lost errors For example, for errors but not overflow or data lost errors: --itrace=e-o-l Suppressing those errors can be useful for testing and debugging because they are not due to decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:10:58 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf auxtrace: Add timestamp to auxtrace errors The timestamp can use useful to find part of a trace that has an error without outputting all of the trace e.g. using the itrace 's' option to skip initial number of events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190206103947.15750-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06 12:39:47 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf auxtrace: Add timestamp to auxtrace errors The timestamp can use useful to find part of a trace that has an error without outputting all of the trace e.g. using the itrace 's' option to skip initial number of events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190206103947.15750-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06 12:39:47 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Synthesize CBR events when last seen value changes The first core-to-bus ratio (CBR) event will not be shown if --itrace 's' option (skip initial number of events) is used, nor if time intervals are specified that do not include the start of tracing. Change the logic to record the last CBR value seen by the user, and synthesize CBR events whenever that changes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190622093248.581-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-22 12:32:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for samples to contain IPC ratio Copy the incremental instruction count and cycle count onto 'instructions' and 'branches' samples. Because Intel PT does not update the cycle count on every branch or instruction, the incremental values will often be zero. When there are values, they will be the number of instructions and number of cycles since the last update, and thus represent the average IPC since the last IPC value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-20 14:37:13 +03:00
perf intel-pt: Prepare to synthesize PEBS samples Add infrastructure to prepare for synthesizing PEBS samples but leave the actual synthesis to later patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190610072803.10456-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 10:27:56 +03:00
perf intel-pt: Synthesize CBR events when last seen value changes The first core-to-bus ratio (CBR) event will not be shown if --itrace 's' option (skip initial number of events) is used, nor if time intervals are specified that do not include the start of tracing. Change the logic to record the last CBR value seen by the user, and synthesize CBR events whenever that changes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190622093248.581-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-22 12:32:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Synthesize CBR events when last seen value changes The first core-to-bus ratio (CBR) event will not be shown if --itrace 's' option (skip initial number of events) is used, nor if time intervals are specified that do not include the start of tracing. Change the logic to record the last CBR value seen by the user, and synthesize CBR events whenever that changes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190622093248.581-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-22 12:32:45 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf intel-pt: Join needlessly wrapped lines Join needlessly wrapped lines. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-29-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:29 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Join needlessly wrapped lines Join needlessly wrapped lines. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-29-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:29 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf thread-stack: Fix thread stack processing for the idle task perf creates a single 'struct thread' to represent the idle task. That is because threads are identified by PID and TID, and the idle task always has PID == TID == 0. However, there are actually separate idle tasks for each CPU. That creates a problem for thread stack processing which assumes that each thread has a single stack, not one stack per CPU. Fix that by passing through the CPU number, and in the case of the idle "thread", pick the thread stack from an array based on the CPU number. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20181221120620.9659-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-12-21 14:06:19 +02:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch INTEL_PT_SS_NOT_TRACING sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. In one case, INTEL_PT_SS_NOT_TRACING state was not correctly transitioning to INTEL_PT_SS_TRACING state due to a missing case clause. Add it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1527762225-26024-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-05-31 13:23:42 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf machine: Add method for common kernel_map(FUNCTION) operation And it is also a step in the direction of killing the separation of data and text maps in map_groups. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-rrds86kb3wx5wk8v38v56gw8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-30 11:54:04 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf symbols: Remove symbol_filter_t machinery We're not using it anymore, few users were, but we really could do without it, simplify lots of functions by removing it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-1zng8wdznn00iiz08bb7q3vn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-01 19:25:52 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf symbols: Shorten dso__(first|last)_symbol() All users want MAP__FUNCTION, and this split is going away. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-sm72zwt1f03ma5uw78l6zze0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-04-25 17:01:46 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf auxtrace: Add timestamp to auxtrace errors The timestamp can use useful to find part of a trace that has an error without outputting all of the trace e.g. using the itrace 's' option to skip initial number of events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190206103947.15750-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06 12:39:47 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for decoding AUX area samples Add support for dumping, queuing and decoding AUX area samples. Decoding samples is the same as regular decoding, except in the case where there are no timestamps, in which case buffers are decoded immediately before the sample event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-15 14:42:24 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf auxtrace: Add timestamp to auxtrace errors The timestamp can use useful to find part of a trace that has an error without outputting all of the trace e.g. using the itrace 's' option to skip initial number of events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190206103947.15750-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06 12:39:47 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix sync_switch sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07 16:02:22 +02:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf intel-pt: Rationalize intel_pt_sync_switch()'s use of next_tid Returning 1 from intel_pt_sync_switch() causes the current tid to be set. That negates the need to keep next_tid anymore. Rationalize the code to that effect. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-04-12 14:38:30 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf evlist: Use the right prefix for 'struct evlist' sample id lookup methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-11-30 14:17:57 -03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf evsel: Rename perf_evsel__{str,int}val() and other tracepoint field metehods to to evsel__*() As those are not 'struct evsel' methods, not part of tools/lib/perf/, aka libperf, to whom the perf_ prefix belongs. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 16:26:57 -03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Improve sync_switch by processing PERF_RECORD_SWITCH* in events sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. Improve it by processing "context switch in" events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-04-12 14:38:29 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf intel-pt: Improve sync_switch by processing PERF_RECORD_SWITCH* in events sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. Improve it by processing "context switch in" events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-04-12 14:38:29 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf intel-pt: Fix "context_switch event has no tid" error A context_switch event can have no tid because pids can be detached from a task while the task is still running (in do_exit()). Note this won't happen with per-task contexts because then tracing stops at perf_event_exit_task() If a task with no tid gets preempted, or a dying task gets preempted and its parent releases it, when it subsequently gets switched back in, Intel PT will not be able to determine what task is running and prints an error "context_switch event has no tid". However, it is not really an error because the task is in kernel space and the decoder can continue to decode successfully. Fix by changing the error to be only a logged message, and make allowance for tid == -1. Example: Using 5.9-rc4 with Preemptible Kernel (Low-Latency Desktop) e.g. $ uname -r 5.9.0-rc4 $ grep PREEMPT .config # CONFIG_PREEMPT_NONE is not set # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y CONFIG_PREEMPT_COUNT=y CONFIG_PREEMPTION=y CONFIG_PREEMPT_RCU=y CONFIG_PREEMPT_NOTIFIERS=y CONFIG_DRM_I915_PREEMPT_TIMEOUT=640 CONFIG_DEBUG_PREEMPT=y # CONFIG_PREEMPT_TRACER is not set # CONFIG_PREEMPTIRQ_DELAY_TEST is not set Before: $ cat forkit.c #include <sys/types.h> #include <unistd.h> #include <sys/wait.h> int main() { pid_t child; int status = 0; child = fork(); if (child == 0) return 123; wait(&status); return 0; } $ gcc -o forkit forkit.c $ sudo ~/bin/perf record --kcore -a -m,64M -e intel_pt/cyc/k & [1] 11016 $ taskset 2 ./forkit $ sudo pkill perf $ [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 17.262 MB perf.data ] [1]+ Terminated sudo ~/bin/perf record --kcore -a -m,64M -e intel_pt/cyc/k $ sudo ~/bin/perf script --show-task-events --show-switch-events --itrace=iqqe-o -C 1 --ns | grep -C 2 forkit context_switch event has no tid taskset 11019 [001] 66663.270045029: 1 instructions:k: ffffffffb1d9f844 strnlen_user+0xb4 ([kernel.kallsyms]) taskset 11019 [001] 66663.270201816: 1 instructions:k: ffffffffb1a83121 unmap_page_range+0x561 ([kernel.kallsyms]) forkit 11019 [001] 66663.270327553: PERF_RECORD_COMM exec: forkit:11019/11019 forkit 11019 [001] 66663.270420028: 1 instructions:k: ffffffffb1db9537 __clear_user+0x27 ([kernel.kallsyms]) forkit 11019 [001] 66663.270648704: 1 instructions:k: ffffffffb18829e6 do_user_addr_fault+0xf6 ([kernel.kallsyms]) forkit 11019 [001] 66663.270833163: 1 instructions:k: ffffffffb230a825 irqentry_exit_to_user_mode+0x15 ([kernel.kallsyms]) forkit 11019 [001] 66663.271092359: 1 instructions:k: ffffffffb1aea3d9 lock_page_memcg+0x9 ([kernel.kallsyms]) forkit 11019 [001] 66663.271207092: PERF_RECORD_FORK(11020:11020):(11019:11019) forkit 11019 [001] 66663.271234775: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 11020/11020 forkit 11020 [001] 66663.271238407: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 forkit 11020 [001] 66663.271312066: 1 instructions:k: ffffffffb1a88140 handle_mm_fault+0x10 ([kernel.kallsyms]) forkit 11020 [001] 66663.271476225: PERF_RECORD_EXIT(11020:11020):(11019:11019) forkit 11020 [001] 66663.271497488: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11019/11019 forkit 11019 [001] 66663.271500523: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11020/11020 forkit 11019 [001] 66663.271517241: 1 instructions:k: ffffffffb24012cd error_entry+0x6d ([kernel.kallsyms]) forkit 11019 [001] 66663.271664080: PERF_RECORD_EXIT(11019:11019):(1386:1386) After: $ sudo ~/bin/perf script --show-task-events --show-switch-events --itrace=iqqe-o -C 1 --ns | grep -C 2 forkit taskset 11019 [001] 66663.270045029: 1 instructions:k: ffffffffb1d9f844 strnlen_user+0xb4 ([kernel.kallsyms]) taskset 11019 [001] 66663.270201816: 1 instructions:k: ffffffffb1a83121 unmap_page_range+0x561 ([kernel.kallsyms]) forkit 11019 [001] 66663.270327553: PERF_RECORD_COMM exec: forkit:11019/11019 forkit 11019 [001] 66663.270420028: 1 instructions:k: ffffffffb1db9537 __clear_user+0x27 ([kernel.kallsyms]) forkit 11019 [001] 66663.270648704: 1 instructions:k: ffffffffb18829e6 do_user_addr_fault+0xf6 ([kernel.kallsyms]) forkit 11019 [001] 66663.270833163: 1 instructions:k: ffffffffb230a825 irqentry_exit_to_user_mode+0x15 ([kernel.kallsyms]) forkit 11019 [001] 66663.271092359: 1 instructions:k: ffffffffb1aea3d9 lock_page_memcg+0x9 ([kernel.kallsyms]) forkit 11019 [001] 66663.271207092: PERF_RECORD_FORK(11020:11020):(11019:11019) forkit 11019 [001] 66663.271234775: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 11020/11020 forkit 11020 [001] 66663.271238407: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 forkit 11020 [001] 66663.271312066: 1 instructions:k: ffffffffb1a88140 handle_mm_fault+0x10 ([kernel.kallsyms]) forkit 11020 [001] 66663.271476225: PERF_RECORD_EXIT(11020:11020):(11019:11019) forkit 11020 [001] 66663.271497488: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11019/11019 forkit 11019 [001] 66663.271500523: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11020/11020 forkit 11019 [001] 66663.271517241: 1 instructions:k: ffffffffb24012cd error_entry+0x6d ([kernel.kallsyms]) forkit 11019 [001] 66663.271664080: PERF_RECORD_EXIT(11019:11019):(1386:1386) forkit 11019 [001] 66663.271688752: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: -1/-1 :-1 -1 [001] 66663.271692086: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 :-1 -1 [001] 66663.271707466: 1 instructions:k: ffffffffb18eb096 update_load_avg+0x306 ([kernel.kallsyms]) Fixes: 86c2786994bd7c ("perf intel-pt: Add support for PERF_RECORD_SWITCH") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Yu-cheng Yu <yu-cheng.yu@intel.com> Link: http://lore.kernel.org/lkml/20200909084923.9096-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-09 11:49:23 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for text poke events Select text poke events when available and the kernel is being traced. Process text poke events to invalidate entries in Intel PT's instruction cache. Example: The example requires kernel config: CONFIG_PROC_SYSCTL=y CONFIG_SCHED_DEBUG=y CONFIG_SCHEDSTATS=y Before: # perf record -o perf.data.before --kcore -a -e intel_pt//k -m,64M & # cat /proc/sys/kernel/sched_schedstats 0 # echo 1 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 1 # echo 0 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 0 # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 3.341 MB perf.data.before ] [1]+ Terminated perf record -o perf.data.before --kcore -a -e intel_pt//k -m,64M # perf script -i perf.data.before --itrace=e >/dev/null Warning: 474 instruction trace errors After: # perf record -o perf.data.after --kcore -a -e intel_pt//k -m,64M & # cat /proc/sys/kernel/sched_schedstats 0 # echo 1 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 1 # echo 0 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 0 # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 2.646 MB perf.data.after ] [1]+ Terminated perf record -o perf.data.after --kcore -a -e intel_pt//k -m,64M # perf script -i perf.data.after --itrace=e >/dev/null Example: The example requires kernel config: # CONFIG_FUNCTION_TRACER is not set Before: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __schedule Added new event: probe:__schedule (on __schedule) You can now use it in all perf tools, such as: perf record -e probe:__schedule -aR sleep 1 # perf record -e probe:__schedule -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.026 MB perf.data (68 samples) ] # perf probe -d probe:__schedule Removed event: probe:__schedule # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 41.268 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null Warning: 207 instruction trace errors After: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __schedule Added new event: probe:__schedule (on __schedule) You can now use it in all perf tools, such as: perf record -e probe:__schedule -aR sleep 1 # perf record -e probe:__schedule -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.028 MB perf.data (107 samples) ] # perf probe -d probe:__schedule Removed event: probe:__schedule # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 39.978 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null # perf script -i t1 --no-itrace -D | grep 'POKE\|KSYMBOL' 6 565303693547 0x291f18 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc027a000 len 4096 type 2 flags 0x0 name kprobe_insn_page 6 565303697010 0x291f68 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027a000 old len 0 new len 6 6 565303838278 0x291fa8 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc027c000 len 4096 type 2 flags 0x0 name kprobe_optinsn_page 6 565303848286 0x291ff8 [0xa0]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027c000 old len 0 new len 106 6 565369336743 0x292af8 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffff88ab8890 old len 5 new len 5 7 566434327704 0x217c208 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffff88ab8890 old len 5 new len 5 6 566456313475 0x293198 [0xa0]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027c000 old len 106 new len 0 6 566456314935 0x293238 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027a000 old len 6 new len 0 Example: The example requires kernel config: CONFIG_FUNCTION_TRACER=y Before: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __kmalloc Added new event: probe:__kmalloc (on __kmalloc) You can now use it in all perf tools, such as: perf record -e probe:__kmalloc -aR sleep 1 # perf record -e probe:__kmalloc -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.022 MB perf.data (6 samples) ] # perf probe -d probe:__kmalloc Removed event: probe:__kmalloc # kill %1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 43.850 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null Warning: 8 instruction trace errors After: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __kmalloc Added new event: probe:__kmalloc (on __kmalloc) You can now use it in all perf tools, such as: perf record -e probe:__kmalloc -aR sleep 1 # perf record -e probe:__kmalloc -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.037 MB perf.data (206 samples) ] # perf probe -d probe:__kmalloc Removed event: probe:__kmalloc # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 41.442 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null # perf script -i t1 --no-itrace -D | grep 'POKE\|KSYMBOL' 5 312216133258 0x8bafe0 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc0360000 len 415 type 2 flags 0x0 name ftrace_trampoline 5 312216133494 0x8bb030 [0x1d8]: PERF_RECORD_TEXT_POKE addr 0xffffffffc0360000 old len 0 new len 415 5 312216229563 0x8bb208 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 5 312216239063 0x8bb248 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 5 312216727230 0x8bb288 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffabbea190 old len 5 new len 5 5 312216739322 0x8bb2c8 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 5 312216748321 0x8bb308 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 7 313287163462 0x2817430 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 7 313287174890 0x2817470 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 7 313287818979 0x28174b0 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffabbea190 old len 5 new len 5 7 313287829357 0x28174f0 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 7 313287841246 0x2817530 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20200512121922.8997-14-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-12 15:19:20 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Fix Intel PT timestamp handling Events that don't sample the timestamp have a timestamp value of -1. Intel PT processing wasn't taking that into account. This is particularly noticeable with Intel BTS because timestamps are not requested by default. Then, if the conversion of -1 to TSC results in a small number, the processing is unaffected. However if the conversion results in a big number, then the data is processed prematurely before relevant sideband data like mmap events, which in turn results in samples with unknown dsos. Commiter note: Since BTS wasn't upstream, I split the patch to fold the BTS part with the patch introducing it, to avoid having this bug in the commit history. PT was already upstream, so this patch contains that part. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1440060692-5585-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-20 11:51:32 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for decoding AUX area samples Add support for dumping, queuing and decoding AUX area samples. Decoding samples is the same as regular decoding, except in the case where there are no timestamps, in which case buffers are decoded immediately before the sample event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-15 14:42:24 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Fix use of wrong event when processing exit events In a couple of cases the 'comm' member of 'union event' has been used instead of the correct member ('fork') when processing exit events. In the cases where it has been used incorrectly, only the 'pid' and 'tid' are affected. The 'pid' value would be correct anyway because it is in the same position in 'comm' and 'fork' events, but the 'tid' would have been incorrectly assigned from 'ppid'. However, for exit events, the kernel puts the current task in the 'ppid' and 'ttid' which is the same as the exiting task. That is 'ppid' == 'pid' and if the task is not multi-threaded, 'pid' == 'tid' i.e. the data goes wrong only when tracing multi-threaded programs. It is hard to find an example of how this would produce an error in practice. There are 3 occurences of the fix: 1. perf script is only affected if !sample_id_all which only happens on old kernels. 2. intel_pt is only affected when decoding without timestamps and would probably still decode correctly - the exit event is only used to flush out data which anyway gets flushed at the end of the session 3. intel_bts also uses the exit event to flush data which would probably not cause errors as it would get flushed at the end of the session instead Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439888825-27708-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-18 12:07:05 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for text poke events Select text poke events when available and the kernel is being traced. Process text poke events to invalidate entries in Intel PT's instruction cache. Example: The example requires kernel config: CONFIG_PROC_SYSCTL=y CONFIG_SCHED_DEBUG=y CONFIG_SCHEDSTATS=y Before: # perf record -o perf.data.before --kcore -a -e intel_pt//k -m,64M & # cat /proc/sys/kernel/sched_schedstats 0 # echo 1 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 1 # echo 0 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 0 # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 3.341 MB perf.data.before ] [1]+ Terminated perf record -o perf.data.before --kcore -a -e intel_pt//k -m,64M # perf script -i perf.data.before --itrace=e >/dev/null Warning: 474 instruction trace errors After: # perf record -o perf.data.after --kcore -a -e intel_pt//k -m,64M & # cat /proc/sys/kernel/sched_schedstats 0 # echo 1 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 1 # echo 0 > /proc/sys/kernel/sched_schedstats # cat /proc/sys/kernel/sched_schedstats 0 # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 2.646 MB perf.data.after ] [1]+ Terminated perf record -o perf.data.after --kcore -a -e intel_pt//k -m,64M # perf script -i perf.data.after --itrace=e >/dev/null Example: The example requires kernel config: # CONFIG_FUNCTION_TRACER is not set Before: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __schedule Added new event: probe:__schedule (on __schedule) You can now use it in all perf tools, such as: perf record -e probe:__schedule -aR sleep 1 # perf record -e probe:__schedule -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.026 MB perf.data (68 samples) ] # perf probe -d probe:__schedule Removed event: probe:__schedule # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 41.268 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null Warning: 207 instruction trace errors After: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __schedule Added new event: probe:__schedule (on __schedule) You can now use it in all perf tools, such as: perf record -e probe:__schedule -aR sleep 1 # perf record -e probe:__schedule -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.028 MB perf.data (107 samples) ] # perf probe -d probe:__schedule Removed event: probe:__schedule # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 39.978 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null # perf script -i t1 --no-itrace -D | grep 'POKE\|KSYMBOL' 6 565303693547 0x291f18 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc027a000 len 4096 type 2 flags 0x0 name kprobe_insn_page 6 565303697010 0x291f68 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027a000 old len 0 new len 6 6 565303838278 0x291fa8 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc027c000 len 4096 type 2 flags 0x0 name kprobe_optinsn_page 6 565303848286 0x291ff8 [0xa0]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027c000 old len 0 new len 106 6 565369336743 0x292af8 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffff88ab8890 old len 5 new len 5 7 566434327704 0x217c208 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffff88ab8890 old len 5 new len 5 6 566456313475 0x293198 [0xa0]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027c000 old len 106 new len 0 6 566456314935 0x293238 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffc027a000 old len 6 new len 0 Example: The example requires kernel config: CONFIG_FUNCTION_TRACER=y Before: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __kmalloc Added new event: probe:__kmalloc (on __kmalloc) You can now use it in all perf tools, such as: perf record -e probe:__kmalloc -aR sleep 1 # perf record -e probe:__kmalloc -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.022 MB perf.data (6 samples) ] # perf probe -d probe:__kmalloc Removed event: probe:__kmalloc # kill %1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 43.850 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null Warning: 8 instruction trace errors After: # perf record --kcore -m,64M -o t1 -a -e intel_pt//k & # perf probe __kmalloc Added new event: probe:__kmalloc (on __kmalloc) You can now use it in all perf tools, such as: perf record -e probe:__kmalloc -aR sleep 1 # perf record -e probe:__kmalloc -aR sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.037 MB perf.data (206 samples) ] # perf probe -d probe:__kmalloc Removed event: probe:__kmalloc # kill %1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 41.442 MB t1 ] [1]+ Terminated perf record --kcore -m,64M -o t1 -a -e intel_pt//k # perf script -i t1 --itrace=e >/dev/null # perf script -i t1 --no-itrace -D | grep 'POKE\|KSYMBOL' 5 312216133258 0x8bafe0 [0x50]: PERF_RECORD_KSYMBOL addr ffffffffc0360000 len 415 type 2 flags 0x0 name ftrace_trampoline 5 312216133494 0x8bb030 [0x1d8]: PERF_RECORD_TEXT_POKE addr 0xffffffffc0360000 old len 0 new len 415 5 312216229563 0x8bb208 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 5 312216239063 0x8bb248 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 5 312216727230 0x8bb288 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffabbea190 old len 5 new len 5 5 312216739322 0x8bb2c8 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 5 312216748321 0x8bb308 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 7 313287163462 0x2817430 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 7 313287174890 0x2817470 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 7 313287818979 0x28174b0 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffabbea190 old len 5 new len 5 7 313287829357 0x28174f0 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac6016f5 old len 5 new len 5 7 313287841246 0x2817530 [0x40]: PERF_RECORD_TEXT_POKE addr 0xffffffffac601803 old len 5 new len 5 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20200512121922.8997-14-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-12 15:19:20 +03:00
perf intel-pt: Time filter logged perf events Change the debug logging (when used with the --time option) to time filter logged perf events, but allow that to be overridden by using "d+a" instead of plain "d". That can reduce the size of the log file. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:11:01 +03:00
perf intel-pt: Use itrace debug log flags to suppress some messages The "d" option may be followed by flags which affect what debug messages will or will not be logged. Each flag must be preceded by either '+' or '-'. The flags support by Intel PT are: -a Suppress logging of perf events Suppressing perf events is useful for decreasing the size of the log. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10 18:11:00 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf thread: Fix reference count initial state We should always return from thread__new(), the constructor, with the object with a reference count of one, so that: struct thread *thread = thread__new(); thread__put(thread); Will call thread__delete(). If any reference is made to that 'thread' variable, it better use thread__get(thread) to hold a reference. We were returning with thread->refcnt set to zero, fix it and some cases where thread__delete() was being called, which were not a problem because just one reference was being used, now that we set it to 1, use thread__put() instead. Reported-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-4b9mkuk66to4ecckpmpvqx6s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-11 19:11:23 -03:00
perf intel-pt: Fix decoding when there are address filters Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:48 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf intel-pt: Read address filter from AUXTRACE_INFO event Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:46 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Implement ->evsel_is_auxtrace() callback Implement ->evsel_is_auxtrace() callback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:15:59 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Rename struct perf_data_file to perf_data Rename struct perf_data_file to perf_data, because we will add the possibility to have multiple files under perf.data, so the 'perf_data' name fits better. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Changbin Du <changbin.du@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-39wn4d77phel3dgkzo3lyan0@git.kernel.org [ Fixup recent changes in 'perf script --per-event-dump' ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-23 22:07:59 +01:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Rename struct perf_data_file to perf_data Rename struct perf_data_file to perf_data, because we will add the possibility to have multiple files under perf.data, so the 'perf_data' name fits better. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Changbin Du <changbin.du@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-39wn4d77phel3dgkzo3lyan0@git.kernel.org [ Fixup recent changes in 'perf script --per-event-dump' ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-23 22:07:59 +01:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for decoding AUX area samples Add support for dumping, queuing and decoding AUX area samples. Decoding samples is the same as regular decoding, except in the case where there are no timestamps, in which case buffers are decoded immediately before the sample event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-15 14:42:24 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy messages into called function intel_pt_synth_event() Tidy print messages into called function intel_pt_synth_event(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-31-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:31 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy messages into called function intel_pt_synth_event() Tidy print messages into called function intel_pt_synth_event(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-31-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:31 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy messages into called function intel_pt_synth_event() Tidy print messages into called function intel_pt_synth_event(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-31-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:31 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename struct perf_evlist to struct evlist Rename struct perf_evlist to struct evlist, so we don't have a name clash when we add struct perf_evlist in libperf. Committer notes: Added fixes to build on arm64, from Jiri and from me (tools/perf/util/cs-etm.c) Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:52 +02:00
perf intel-pt: Factor out intel_pt_set_event_name() Factor out intel_pt_set_event_name() so it can be reused. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-32-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:32 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf intel-pt: Factor out intel_pt_set_event_name() Factor out intel_pt_set_event_name() so it can be reused. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-32-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:32 +03:00
libperf: Move 'id' from 'struct evsel' to 'struct perf_evsel' Move the 'id' array from 'struct evsel' to libperf's 'struct perf_evsel'. Committer note: Fix the tools/perf/util/cs-etm.c build, i.e. aarch64's CoreSight. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-25-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-02 22:12:26 +02:00
perf intel-pt: Factor out intel_pt_set_event_name() Factor out intel_pt_set_event_name() so it can be reused. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-32-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:32 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf evlist: Rename struct perf_evlist to struct evlist Rename struct perf_evlist to struct evlist, so we don't have a name clash when we add struct perf_evlist in libperf. Committer notes: Added fixes to build on arm64, from Jiri and from me (tools/perf/util/cs-etm.c) Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:52 +02:00
perf intel-pt: Tidy Intel PT evsel lookup into separate function Tidy the lookup of the Intel PT selected event (perf_evsel) into a separate function. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-30-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:30 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf intel-pt: Tidy Intel PT evsel lookup into separate function Tidy the lookup of the Intel PT selected event (perf_evsel) into a separate function. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-30-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:30 +03:00
libperf: Move 'ids' from 'struct evsel' to 'struct perf_evsel' Move 'ids' from 'struct evsel' to libperf's 'struct perf_evsel'. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-26-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-02 22:15:47 +02:00
perf intel-pt: Tidy Intel PT evsel lookup into separate function Tidy the lookup of the Intel PT selected event (perf_evsel) into a separate function. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-30-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:30 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename struct perf_evlist to struct evlist Rename struct perf_evlist to struct evlist, so we don't have a name clash when we add struct perf_evlist in libperf. Committer notes: Added fixes to build on arm64, from Jiri and from me (tools/perf/util/cs-etm.c) Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:52 +02:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy Intel PT evsel lookup into separate function Tidy the lookup of the Intel PT selected event (perf_evsel) into a separate function. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-30-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:30 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
libperf: Move 'id' from 'struct evsel' to 'struct perf_evsel' Move the 'id' array from 'struct evsel' to libperf's 'struct perf_evsel'. Committer note: Fix the tools/perf/util/cs-etm.c build, i.e. aarch64's CoreSight. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-25-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-02 22:12:26 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Move code in intel_pt_synth_events() to simplify attr setting intel_pt_synth_events() uses the same attr structure to create each event. Move the code around a bit to simplify that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-33-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:33 +03:00
perf intel-pt: Fix corrupt data after perf inject from Commit 42bbabed09ce6208 ("perf tools: Add hw_idx in struct branch_stack") changed the format of branch stacks in perf samples. When samples use this new format, a flag must be set in the corresponding event. Synthesized branch stacks generated from Intel PT were using the new format, but not setting the event attribute, leading to consumers seeing corrupt data. This patch fixes the issue by setting the event attribute to indicate use of the new format. Fixes: 42bbabed09ce6208 ("perf tools: Add hw_idx in struct branch_stack") Signed-off-by: Al Grant <al.grant@arm.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200819084751.17686-2-leo.yan@linaro.org Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-19 16:47:51 +08:00
perf intel-pt: Move code in intel_pt_synth_events() to simplify attr setting intel_pt_synth_events() uses the same attr structure to create each event. Move the code around a bit to simplify that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-33-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:33 +03:00
perf intel-pt: Fix corrupt data after perf inject from Commit 42bbabed09ce6208 ("perf tools: Add hw_idx in struct branch_stack") changed the format of branch stacks in perf samples. When samples use this new format, a flag must be set in the corresponding event. Synthesized branch stacks generated from Intel PT were using the new format, but not setting the event attribute, leading to consumers seeing corrupt data. This patch fixes the issue by setting the event attribute to indicate use of the new format. Fixes: 42bbabed09ce6208 ("perf tools: Add hw_idx in struct branch_stack") Signed-off-by: Al Grant <al.grant@arm.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200819084751.17686-2-leo.yan@linaro.org Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-19 16:47:51 +08:00
perf intel-pt: Move code in intel_pt_synth_events() to simplify attr setting intel_pt_synth_events() uses the same attr structure to create each event. Move the code around a bit to simplify that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-33-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:33 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy messages into called function intel_pt_synth_event() Tidy print messages into called function intel_pt_synth_event(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-31-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:31 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Move code in intel_pt_synth_events() to simplify attr setting intel_pt_synth_events() uses the same attr structure to create each event. Move the code around a bit to simplify that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-33-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:33 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Tidy messages into called function intel_pt_synth_event() Tidy print messages into called function intel_pt_synth_event(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-31-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:31 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix transactions_sample_type 'transactions_sample_type' is needed to correctly inject transactions samples but it was not being set. Set it from the event sample type. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-18-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:18 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Factor out intel_pt_set_event_name() Factor out intel_pt_set_event_name() so it can be reused. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1495786658-18063-32-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-05-26 11:17:32 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Process options for PEBS event synthesis Process synth_opts.other_events and attr.aux_output to set up for synthesizing PEBs via Intel PT events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190806084606.4021-6-alexander.shishkin@linux.intel.com Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> [ Fixed up libbperf clashes, i.e. some places using perf_evsel (now in libperf) need to use instead 'evsel' (a tools/perf only abstraction) ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-06 11:46:04 +03:00
libperf: Move 'id' from 'struct evsel' to 'struct perf_evsel' Move the 'id' array from 'struct evsel' to libperf's 'struct perf_evsel'. Committer note: Fix the tools/perf/util/cs-etm.c build, i.e. aarch64's CoreSight. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-25-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-02 22:12:26 +02:00
perf intel-pt: Process options for PEBS event synthesis Process synth_opts.other_events and attr.aux_output to set up for synthesizing PEBs via Intel PT events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190806084606.4021-6-alexander.shishkin@linux.intel.com Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> [ Fixed up libbperf clashes, i.e. some places using perf_evsel (now in libperf) need to use instead 'evsel' (a tools/perf only abstraction) ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-06 11:46:04 +03:00
perf evlist: Rename struct perf_evlist to struct evlist Rename struct perf_evlist to struct evlist, so we don't have a name clash when we add struct perf_evlist in libperf. Committer notes: Added fixes to build on arm64, from Jiri and from me (tools/perf/util/cs-etm.c) Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:52 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 11:26:15 -03:00
perf evsel: Rename *perf_evsel__*name() to *evsel__*name() As they are 'struct evsel' methods or related routines, not part of tools/lib/perf/, aka libperf, to whom the perf_ prefix belongs. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 16:07:09 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf evlist: Rename struct perf_evlist to struct evlist Rename struct perf_evlist to struct evlist, so we don't have a name clash when we add struct perf_evlist in libperf. Committer notes: Added fixes to build on arm64, from Jiri and from me (tools/perf/util/cs-etm.c) Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:52 +02:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:23:51 +02:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 11:26:15 -03:00
libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel Move the perf_event_attr struct fron 'struct evsel' to 'struct perf_evsel'. Committer notes: Fixed up these: tools/perf/arch/arm/util/auxtrace.c tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/arm-spe.c tools/perf/arch/s390/util/auxtrace.c tools/perf/util/cs-etm.c Also cc1: warnings being treated as errors tests/sample-parsing.c: In function 'do_test': tests/sample-parsing.c:162: error: missing initializer tests/sample-parsing.c:162: error: (near initialization for 'evsel.core.cpus') struct evsel evsel = { .needs_swap = false, - .core.attr = { - .sample_type = sample_type, - .read_format = read_format, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, [perfbuilder@a70e4eeb5549 /]$ gcc --version |& head -1 gcc (GCC) 4.4.7 Also we don't need to include perf_event.h in tools/perf/lib/include/perf/evsel.h, forward declaring 'struct perf_event_attr' is enough. And this even fixes the build in some systems where things are used somewhere down the include path from perf_event.h without defining __always_inline. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:29 +02:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf intel-pt: Add mispred-all config option to aid use with autofdo autofdo incorrectly expects branch flags to include either mispred or predicted. In fact mispred = predicted = 0 is valid and means the flags are not supported, which they aren't by Intel PT. To make autofdo work, add a config option which will cause Intel PT decoder to set the mispred flag on all branches. Below is an example of using Intel PT with autofdo. The example is also added to the Intel PT documentation. It requires autofdo (https://github.com/google/autofdo) and gcc version 5. The bubble sort example is from the AutoFDO tutorial (https://gcc.gnu.org/wiki/AutoFDO/Tutorial) amended to take the number of elements as a parameter. $ gcc-5 -O3 sort.c -o sort_optimized $ ./sort_optimized 30000 Bubble sorting array of 30000 elements 2254 ms $ cat ~/.perfconfig [intel-pt] mispred-all $ perf record -e intel_pt//u ./sort 3000 Bubble sorting array of 3000 elements 58 ms [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 3.939 MB perf.data ] $ perf inject -i perf.data -o inj --itrace=i100usle --strip $ ./create_gcov --binary=./sort --profile=inj --gcov=sort.gcov -gcov_version=1 $ gcc-5 -O3 -fauto-profile=sort.gcov sort.c -o sort_autofdo $ ./sort_autofdo 30000 Bubble sorting array of 30000 elements 2155 ms Note there is currently no advantage to using Intel PT instead of LBR, but that may change in the future if greater use is made of the data. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-26-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:56 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Pass Intel PT information for decoding MTC and CYC Record additional information in the AUXTRACE_INFO event in preparation for decoding MTC and CYC packets. Pass the information to the decoder. The AUXTRACE_INFO record can be extended by using the size to indicate the presence of new members. The additional information includes PMU config bit positions and the TSC to CTC (hardware crystal clock) ratio needed to decode MTC packets. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-20-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:54 +03:00
perf intel-pt: Add support for recording the max non-turbo ratio Previously the maximum non-turbo ratio was calculated from TSC assuming a 100 MHz multiplier which is correct for current hardware supporting Intel PT. However more recent kernels also now export the value, so use that in preference to the calculated value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:42 +03:00
perf intel-pt: Read address filter from AUXTRACE_INFO event Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:46 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
libperf: Add PERF_RECORD_AUXTRACE_INFO 'struct auxtrace_info_event' to perf/event.h Move the PERF_RECORD_AUXTRACE_INFO event definition to libperf's event.h. In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used events to their generic '__u*' versions. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-9-jolsa@kernel.org [ Fix cs_etm__print_auxtrace_info() arg to be __u64 too to fix the CORESIGHT=1 build ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-28 15:57:02 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Read address filter from AUXTRACE_INFO event Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:46 +03:00
libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix Even more, to have a "perf_record_" prefix, so that they match the PERF_RECORD_ enum they map to. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-28 15:57:16 +02:00
perf intel-pt: Add a helper function for processing AUXTRACE_INFO Add a helper function 'intel_pt_has()' to make it easier to determine which members the AUXTRACE_INFO event contains. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:44 +03:00
libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix Even more, to have a "perf_record_" prefix, so that they match the PERF_RECORD_ enum they map to. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-28 15:57:16 +02:00
perf intel-pt: Add a helper function for processing AUXTRACE_INFO Add a helper function 'intel_pt_has()' to make it easier to determine which members the AUXTRACE_INFO event contains. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:44 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix Even more, to have a "perf_record_" prefix, so that they match the PERF_RECORD_ enum they map to. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-28 15:57:16 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Read address filter from AUXTRACE_INFO event Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:46 +03:00
libperf: Add PERF_RECORD_AUXTRACE_INFO 'struct auxtrace_info_event' to perf/event.h Move the PERF_RECORD_AUXTRACE_INFO event definition to libperf's event.h. In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used events to their generic '__u*' versions. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-9-jolsa@kernel.org [ Fix cs_etm__print_auxtrace_info() arg to be __u64 too to fix the CORESIGHT=1 build ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-28 15:57:02 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix Even more, to have a "perf_record_" prefix, so that they match the PERF_RECORD_ enum they map to. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-28 15:57:16 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix decoding when there are address filters Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:48 +03:00
perf tools: Propagate perf_config() errors Previously these were being ignored, sometimes silently. Stop doing that, emitting debug messages and handling the errors. Testing it: $ cat ~/.perfconfig cat: /home/acme/.perfconfig: No such file or directory $ perf stat -e cycles usleep 1 Performance counter stats for 'usleep 1': 938,996 cycles:u 0.003813731 seconds time elapsed $ perf top --stdio Error: You may not have permission to collect system-wide stats. Consider tweaking /proc/sys/kernel/perf_event_paranoid, <SNIP> [ perf record: Captured and wrote 0.019 MB perf.data (7 samples) ] [acme@jouet linux]$ perf report --stdio # To display the perf.data header info, please use --header/--header-only options. # Overhead Command Shared Object Symbol # ........ ....... ................. ......................... 71.77% usleep libc-2.24.so [.] _dl_addr 27.07% usleep ld-2.24.so [.] _dl_next_ld_env_entry 1.13% usleep [kernel.kallsyms] [k] page_fault $ $ touch ~/.perfconfig $ ls -la ~/.perfconfig -rw-rw-r--. 1 acme acme 0 Jan 27 12:14 /home/acme/.perfconfig $ $ perf stat -e instructions usleep 1 Performance counter stats for 'usleep 1': 244,610 instructions:u 0.000805383 seconds time elapsed $ [root@jouet ~]# chown acme.acme ~/.perfconfig [root@jouet ~]# perf stat -e cycles usleep 1 Warning: File /root/.perfconfig not owned by current user or root, ignoring it. Performance counter stats for 'usleep 1': 937,615 cycles 0.000836931 seconds time elapsed # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-j2rq96so6xdqlr8p8rd6a3jx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-24 13:44:10 -03:00
perf intel-pt: Add mispred-all config option to aid use with autofdo autofdo incorrectly expects branch flags to include either mispred or predicted. In fact mispred = predicted = 0 is valid and means the flags are not supported, which they aren't by Intel PT. To make autofdo work, add a config option which will cause Intel PT decoder to set the mispred flag on all branches. Below is an example of using Intel PT with autofdo. The example is also added to the Intel PT documentation. It requires autofdo (https://github.com/google/autofdo) and gcc version 5. The bubble sort example is from the AutoFDO tutorial (https://gcc.gnu.org/wiki/AutoFDO/Tutorial) amended to take the number of elements as a parameter. $ gcc-5 -O3 sort.c -o sort_optimized $ ./sort_optimized 30000 Bubble sorting array of 30000 elements 2254 ms $ cat ~/.perfconfig [intel-pt] mispred-all $ perf record -e intel_pt//u ./sort 3000 Bubble sorting array of 3000 elements 58 ms [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 3.939 MB perf.data ] $ perf inject -i perf.data -o inj --itrace=i100usle --strip $ ./create_gcov --binary=./sort --profile=inj --gcov=sort.gcov -gcov_version=1 $ gcc-5 -O3 -fauto-profile=sort.gcov sort.c -o sort_autofdo $ ./sort_autofdo 30000 Bubble sorting array of 30000 elements 2155 ms Note there is currently no advantage to using Intel PT instead of LBR, but that may change in the future if greater use is made of the data. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-26-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-25 16:15:56 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add a helper function for processing AUXTRACE_INFO Add a helper function 'intel_pt_has()' to make it easier to determine which members the AUXTRACE_INFO event contains. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:44 +03:00
perf tools: Pass Intel PT information for decoding MTC and CYC Record additional information in the AUXTRACE_INFO event in preparation for decoding MTC and CYC packets. Pass the information to the decoder. The AUXTRACE_INFO record can be extended by using the size to indicate the presence of new members. The additional information includes PMU config bit positions and the TSC to CTC (hardware crystal clock) ratio needed to decode MTC packets. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-20-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:54 +03:00
perf intel-pt: Add a helper function for processing AUXTRACE_INFO Add a helper function 'intel_pt_has()' to make it easier to determine which members the AUXTRACE_INFO event contains. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:44 +03:00
perf intel-pt: Add support for recording the max non-turbo ratio Previously the maximum non-turbo ratio was calculated from TSC assuming a 100 MHz multiplier which is correct for current hardware supporting Intel PT. However more recent kernels also now export the value, so use that in preference to the calculated value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:42 +03:00
perf intel-pt: Read address filter from AUXTRACE_INFO event Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:46 +03:00
perf intel-pt: Fix decoding when there are address filters Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:48 +03:00
perf intel-pt: Read address filter from AUXTRACE_INFO event Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:46 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix divide by zero when TSC is not available When TSC is not available, "timeless" decoding is used but a divide by zero occurs if perf_time_to_tsc() is called. Ensure the divisor is not zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org # v4.9+ Link: https://lkml.kernel.org/n/tip-1i4j0wqoc8vlbkcizqqxpsf4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-01 12:35:36 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for decoding AUX area samples Add support for dumping, queuing and decoding AUX area samples. Decoding samples is the same as regular decoding, except in the case where there are no timestamps, in which case buffers are decoded immediately before the sample event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-15 14:42:24 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf tools: Fix thread lifetime related segfaut in intel_pt intel_pt_process_auxtrace_info() creates a pt->unknown_thread thread that eventually needs to be freed by the last thread__put() on it, when its refcount hits zero, which may happen in intel_pt_process_auxtrace_info() error handling path and triggers the following segfault, which would happen as well at intel_pt_free, when tools using this intel_pt codebase frees up resources: # perf record -I -e intel_pt/tsc=1,noretcomp=1/u /bin/ls 0 a anaconda-ks.cfg bin perf.data perf.data.old perf-f23-bringup.todo [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.217 MB perf.data ] # # perf script -F event,comm,pid,tid,time,addr,ip,sym,dso,iregs Samples for 'instructions:u' event do not have IREGS attribute set. Cannot print 'iregs' field. intel_pt_synth_events: failed to synthesize 'instructions' event type Segmentation fault (core dumped) # The problem is: there's a union in 'struct thread' combines a list_head and a rb_node. The standard life cycle of a thread is: init rb_node in the constructor, insert it into machine->threads rbtree using rb_node, move it to machine->dead_threads using list_head, clean in the last thread__put: list_del_init(&thread->node). In the above command, it clean a thread before adding it into list, causes the above segfault. Since pt->unknown_thread will never live in an rbtree, initialize its list node so that when list_del_init() is done on it we don't segfault. After this patch: # perf script -F event,comm,pid,tid,time,addr,ip,sym,dso,iregs Samples for 'instructions:u' event do not have IREGS attribute set. Cannot print 'iregs' field. intel_pt_synth_events: failed to synthesize 'instructions' event type 0x248 [0x88]: failed to process type: 70 # Reported-by: Tong Zhang <ztong@vt.edu> Reported-by: Wang Nan <wangnan0@huawei.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: http://lkml.kernel.org/r/1454296865-19749-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-01 03:21:04 +00:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf maps: Merge 'struct maps' with 'struct map_groups' And pick the shortest name: 'struct maps'. The split existed because we used to have two groups of maps, one for functions and one for variables, but that only complicated things, sometimes we needed to figure out what was at some address and then had to first try it on the functions group and if that failed, fall back to the variables one. That split is long gone, so for quite a while we had only one struct maps per struct map_groups, simplify things by combining those structs. First patch is the minimum needed to merge both, follow up patches will rename 'thread->mg' to 'thread->maps', etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-hom6639ro7020o708trhxh59@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-25 21:58:33 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for decoding AUX area samples Add support for dumping, queuing and decoding AUX area samples. Decoding samples is the same as regular decoding, except in the case where there are no timestamps, in which case buffers are decoded immediately before the sample event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-15 14:42:24 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Implement ->evsel_is_auxtrace() callback Implement ->evsel_is_auxtrace() callback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:15:59 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix missing error codes processing auxtrace_info Fix 2 places where the err variable was not being set. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-12-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:43 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf intel-pt: Fix missing error codes processing auxtrace_info Fix 2 places where the err variable was not being set. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-12-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:43 +03:00
perf intel-pt: Add support for PERF_RECORD_SWITCH Add support for selecting and processing PERF_RECORD_SWITCH events for use by Intel PT. If they are available, they will be used in preference to sched_switch events. This enables an unprivileged user to trace multi-threaded or multi-process workloads with any level of perf_event_paranoid. However it depends on kernel support for PERF_RECORD_SWITCH. Without this patch, tracing a multi-threaded workload will decode without error but all the data will be attributed to the main thread. Without this patch, tracing a multi-process workload will result in decoder errors because the decoder will not know which executable is executing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-13 12:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix potential NULL pointer dereference found by the smatch tool Based on the following report from Smatch, fix the potential NULL pointer dereference check. tools/perf/util/intel-pt.c:3200 intel_pt_process_auxtrace_info() error: we previously assumed 'session->itrace_synth_opts' could be null (see line 3196) tools/perf/util/intel-pt.c:3206 intel_pt_process_auxtrace_info() warn: variable dereferenced before check 'session->itrace_synth_opts' (see line 3200) tools/perf/util/intel-pt.c 3196 if (session->itrace_synth_opts && session->itrace_synth_opts->set) { 3197 pt->synth_opts = *session->itrace_synth_opts; 3198 } else { 3199 itrace_synth_opts__set_default(&pt->synth_opts, 3200 session->itrace_synth_opts->default_no_sample); ^^^^^^^^^^^^^^^^^^^^^^^^^^ 3201 if (!session->itrace_synth_opts->default_no_sample && 3202 !session->itrace_synth_opts->inject) { 3203 pt->synth_opts.branches = false; 3204 pt->synth_opts.callchain = true; 3205 } 3206 if (session->itrace_synth_opts) ^^^^^^^^^^^^^^^^^^^^^^^^^^ 3207 pt->synth_opts.thread_stack = 3208 session->itrace_synth_opts->thread_stack; 3209 } 'session->itrace_synth_opts' is impossible to be a NULL pointer in intel_pt_process_auxtrace_info(), thus this patch removes the NULL test for 'session->itrace_synth_opts'. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190708143937.7722-4-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-08 22:39:36 +08:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf script: Make itrace script default to all calls By default 'perf script' for itrace outputs sampled instructions or branches. In my experience this is confusing to users because it's hard to correlate with real program behavior. The sampling makes sense for tools like 'perf report' that actually sample to reduce the run time, but run time is normally not a problem for 'perf script'. It's better to give an accurate representation of the program flow. Default 'perf script' to output all calls for itrace. That's a much saner default. The old behavior can be still requested with 'perf script' --itrace=ibxwpe100000 v2: Fix ETM build failure v3: Really fix ETM build failure (Kim Phillips) Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Leo Yan <leo.yan@linaro.org> Link: http://lkml.kernel.org/r/20180920180540.14039-3-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-20 11:05:37 -07:00
perf intel-pt: Fix itrace defaults for perf script Commit 4eb068157121 ("perf script: Make itrace script default to all calls") does not work because 'use_browser' is being used to determine whether to default to periodic sampling (i.e. better for perf report). The result is that nothing but CBR events display for perf script when no --itrace option is specified. Fix by using 'default_no_sample' and 'inject' instead. Example: Before: $ perf record -e intel_pt/cyc/u ls $ perf script > cmp1.txt $ perf script --itrace=cepwx > cmp2.txt $ diff -sq cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt differ After: $ perf script > cmp1.txt $ perf script --itrace=cepwx > cmp2.txt $ diff -sq cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org # v4.20+ Fixes: 90e457f7be08 ("perf tools: Add Intel PT support") Link: http://lkml.kernel.org/r/20190520113728.14389-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-20 14:37:07 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix potential NULL pointer dereference found by the smatch tool Based on the following report from Smatch, fix the potential NULL pointer dereference check. tools/perf/util/intel-pt.c:3200 intel_pt_process_auxtrace_info() error: we previously assumed 'session->itrace_synth_opts' could be null (see line 3196) tools/perf/util/intel-pt.c:3206 intel_pt_process_auxtrace_info() warn: variable dereferenced before check 'session->itrace_synth_opts' (see line 3200) tools/perf/util/intel-pt.c 3196 if (session->itrace_synth_opts && session->itrace_synth_opts->set) { 3197 pt->synth_opts = *session->itrace_synth_opts; 3198 } else { 3199 itrace_synth_opts__set_default(&pt->synth_opts, 3200 session->itrace_synth_opts->default_no_sample); ^^^^^^^^^^^^^^^^^^^^^^^^^^ 3201 if (!session->itrace_synth_opts->default_no_sample && 3202 !session->itrace_synth_opts->inject) { 3203 pt->synth_opts.branches = false; 3204 pt->synth_opts.callchain = true; 3205 } 3206 if (session->itrace_synth_opts) ^^^^^^^^^^^^^^^^^^^^^^^^^^ 3207 pt->synth_opts.thread_stack = 3208 session->itrace_synth_opts->thread_stack; 3209 } 'session->itrace_synth_opts' is impossible to be a NULL pointer in intel_pt_process_auxtrace_info(), thus this patch removes the NULL test for 'session->itrace_synth_opts'. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190708143937.7722-4-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-08 22:39:36 +08:00
perf auxtrace: Add option to feed branches to the thread stack In preparation for using the thread stack to print an indent representing the stack depth in perf script, add an option to tell decoders to feed branches to the thread stack. Add support for that option to Intel PT and Intel BTS. The advantage of using the decoder to feed the thread stack is that it happens before branch filtering and so can be used with different itrace options (e.g. it still works when only showing calls, even though the thread stack needs to see calls and returns). Also it does not conflict with using the thread stack to get callchains. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1466689258-28493-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23 16:40:57 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for recording the max non-turbo ratio Previously the maximum non-turbo ratio was calculated from TSC assuming a 100 MHz multiplier which is correct for current hardware supporting Intel PT. However more recent kernels also now export the value, so use that in preference to the calculated value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:42 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Synthesize new power and "ptwrite" events Synthesize new power and ptwrite events. Power events report changes to C-state but I have also added support for the existing CBR (core-to-bus ratio) packet and included that when outputting power events. The PTWRITE packet is associated with the new "ptwrite" instruction, which is essentially just a way to stuff a 32 or 64 bit value into the PT trace. More details can be found in the patches that add documentation and in the Intel SDM. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498811805-2335-1-git-send-email-adrian.hunter@intel.com [ Copy the description of such packet from the patchkit cover message ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-06-30 11:36:45 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix potential NULL pointer dereference found by the smatch tool Based on the following report from Smatch, fix the potential NULL pointer dereference check. tools/perf/util/intel-pt.c:3200 intel_pt_process_auxtrace_info() error: we previously assumed 'session->itrace_synth_opts' could be null (see line 3196) tools/perf/util/intel-pt.c:3206 intel_pt_process_auxtrace_info() warn: variable dereferenced before check 'session->itrace_synth_opts' (see line 3200) tools/perf/util/intel-pt.c 3196 if (session->itrace_synth_opts && session->itrace_synth_opts->set) { 3197 pt->synth_opts = *session->itrace_synth_opts; 3198 } else { 3199 itrace_synth_opts__set_default(&pt->synth_opts, 3200 session->itrace_synth_opts->default_no_sample); ^^^^^^^^^^^^^^^^^^^^^^^^^^ 3201 if (!session->itrace_synth_opts->default_no_sample && 3202 !session->itrace_synth_opts->inject) { 3203 pt->synth_opts.branches = false; 3204 pt->synth_opts.callchain = true; 3205 } 3206 if (session->itrace_synth_opts) ^^^^^^^^^^^^^^^^^^^^^^^^^^ 3207 pt->synth_opts.thread_stack = 3208 session->itrace_synth_opts->thread_stack; 3209 } 'session->itrace_synth_opts' is impossible to be a NULL pointer in intel_pt_process_auxtrace_info(), thus this patch removes the NULL test for 'session->itrace_synth_opts'. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190708143937.7722-4-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-08 22:39:36 +08:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Consolidate thread-stack use condition The components of the condition do not change, so consolidate them in one variable. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:44 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Add support for synthesizing branch stacks for regular events Use the new thread_stack__br_sample_late() function to create a thread stack for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles:ppp}' -c 10000 uname Linux [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.743 MB perf.data ] # perf report --itrace=Le --stdio | head -30 | tail -18 # Samples: 11K of event 'cycles:ppp' # Event count (approx.): 11648 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ............................ ............................ .................. # 5.49% uname libc-2.30.so [.] _dl_addr [.] _dl_addr - 2.41% uname ld-2.30.so [.] _dl_relocate_object [.] _dl_relocate_object - 2.31% uname ld-2.30.so [.] do_lookup_x [.] do_lookup_x - 2.17% uname [kernel.kallsyms] [k] unmap_page_range [k] unmap_page_range - 2.05% uname ld-2.30.so [k] _dl_start [k] _dl_start - 1.97% uname ld-2.30.so [.] _dl_lookup_symbol_x [.] _dl_lookup_symbol_x - 1.94% uname [kernel.kallsyms] [k] filemap_map_pages [k] filemap_map_pages - 1.60% uname [kernel.kallsyms] [k] __handle_mm_fault [k] __handle_mm_fault - 1.44% uname [kernel.kallsyms] [k] page_add_file_rmap [k] page_add_file_rmap - 1.12% uname [kernel.kallsyms] [k] vma_interval_tree_insert [k] vma_interval_tree_insert - 0.94% uname [kernel.kallsyms] [k] perf_iterate_ctx [k] perf_iterate_ctx - Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:49 +03:00
perf intel-pt: Change branch stack support to use thread-stacks Change Intel PT's branch stack support to use thread stacks. The advantages of using branch stack support from the thread-stack are: 1. the branches are accumulated separately for each thread 2. the branch stack is cleared only in between continuous traces This helps pave the way for adding branch stacks to regular events, not just synthesized events as at present. While the 2 approaches are not identical, in simple cases the results can be identical e.g. Before: # perf record --kcore -e intel_pt// uname # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp1.txt After: # perf script --itrace=i10usl -F+brstacksym,+addr,+flags > cmp2.txt # diff -s cmp1.txt cmp2.txt Files cmp1.txt and cmp2.txt are identical Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:45 +03:00
perf intel-pt: Consolidate thread-stack use condition The components of the condition do not change, so consolidate them in one variable. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200429150751.12570-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-29 18:07:44 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Process options for PEBS event synthesis Process synth_opts.other_events and attr.aux_output to set up for synthesizing PEBs via Intel PT events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190806084606.4021-6-alexander.shishkin@linux.intel.com Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> [ Fixed up libbperf clashes, i.e. some places using perf_evsel (now in libperf) need to use instead 'evsel' (a tools/perf only abstraction) ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-06 11:46:04 +03:00
perf intel-pt: Add support for decoding AUX area samples Add support for dumping, queuing and decoding AUX area samples. Decoding samples is the same as regular decoding, except in the case where there are no timestamps, in which case buffers are decoded immediately before the sample event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-15 14:42:24 +02:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Add support for synthesizing callchains for regular events Currently, callchains can be synthesized only for synthesized events. Support also synthesizing callchains for regular events. Example: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.532 MB perf.data ] # perf script --itrace=Ge | head -20 uname 4864 2419025.358181: 10000 cycles: ffffffffbba56965 apparmor_bprm_committing_creds+0x35 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07422 security_bprm_committing_creds+0x22 ([kernel.kallsyms]) ffffffffbb89805d install_exec_creds+0xd ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358185: 10000 cycles: ffffffffbba56db0 apparmor_bprm_committed_creds+0x20 ([kernel.kallsyms]) ffffffffbc400cd5 __indirect_thunk_start+0x5 ([kernel.kallsyms]) ffffffffbba07452 security_bprm_committed_creds+0x22 ([kernel.kallsyms]) ffffffffbb89809a install_exec_creds+0x4a ([kernel.kallsyms]) ffffffffbb90d9ac load_elf_binary+0x3ac ([kernel.kallsyms]) uname 4864 2419025.358189: 10000 cycles: ffffffffbb86fdf6 vma_adjust_trans_huge+0x6 ([kernel.kallsyms]) ffffffffbb821660 __vma_adjust+0x160 ([kernel.kallsyms]) ffffffffbb897be7 shift_arg_pages+0x97 ([kernel.kallsyms]) ffffffffbb897ed9 setup_arg_pages+0x1e9 ([kernel.kallsyms]) ffffffffbb90d9f2 load_elf_binary+0x3f2 ([kernel.kallsyms]) Committer testing: # perf record --kcore --aux-sample -e '{intel_pt//,cycles}' -c 10000 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.233 MB perf.data ] # Then, before this patch: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) uname 28642 168664.856396: 10000 cycles: ffffffff982fd4ec __mod_memcg_state+0x1c ([kernel.kallsyms]) uname 28642 168664.856400: 10000 cycles: ffffffff9829fddd do_mmap+0xfd ([kernel.kallsyms]) uname 28642 168664.856404: 10000 cycles: ffffffff9829c879 __vma_adjust+0x479 ([kernel.kallsyms]) uname 28642 168664.856408: 10000 cycles: ffffffff98238e94 __perf_addr_filters_adjust+0x34 ([kernel.kallsyms]) uname 28642 168664.856412: 10000 cycles: ffffffff98a38e0b down_write+0x1b ([kernel.kallsyms]) uname 28642 168664.856416: 10000 cycles: ffffffff983006a0 memcg_kmem_get_cache+0x0 ([kernel.kallsyms]) uname 28642 168664.856421: 10000 cycles: ffffffff98396eaf load_elf_binary+0x92f ([kernel.kallsyms]) uname 28642 168664.856425: 10000 cycles: ffffffff982e0222 kfree+0x62 ([kernel.kallsyms]) uname 28642 168664.856428: 10000 cycles: ffffffff9846dfd4 file_has_perm+0x54 ([kernel.kallsyms]) uname 28642 168664.856433: 10000 cycles: ffffffff98288911 vma_interval_tree_insert+0x51 ([kernel.kallsyms]) uname 28642 168664.856437: 10000 cycles: ffffffff9823e577 perf_event_mmap_output+0x27 ([kernel.kallsyms]) uname 28642 168664.856441: 10000 cycles: ffffffff98a26fa0 xas_load+0x40 ([kernel.kallsyms]) uname 28642 168664.856445: 10000 cycles: ffffffff98004f30 arch_setup_additional_pages+0x0 ([kernel.kallsyms]) uname 28642 168664.856448: 10000 cycles: ffffffff98a297c0 copy_user_generic_unrolled+0xa0 ([kernel.kallsyms]) uname 28642 168664.856452: 10000 cycles: ffffffff9853a87a strnlen_user+0x10a ([kernel.kallsyms]) uname 28642 168664.856456: 10000 cycles: ffffffff986638a7 randomize_page+0x27 ([kernel.kallsyms]) uname 28642 168664.856460: 10000 cycles: ffffffff98a3b645 _raw_spin_lock+0x5 ([kernel.kallsyms]) # And after: # perf script --itrace=Ge | head -20 uname 28642 168664.856384: 10000 cycles: ffffffff9810aeaa commit_creds+0x2a ([kernel.kallsyms]) ffffffff9831fe87 install_exec_creds+0x17 ([kernel.kallsyms]) ffffffff983968d9 load_elf_binary+0x359 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856388: 10000 cycles: ffffffff982a24f1 mprotect_fixup+0x151 ([kernel.kallsyms]) ffffffff9831fa83 setup_arg_pages+0x123 ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) uname 28642 168664.856392: 10000 cycles: ffffffff982a385b move_page_tables+0xbcb ([kernel.kallsyms]) ffffffff9831f889 shift_arg_pages+0xa9 ([kernel.kallsyms]) ffffffff9831fb4f setup_arg_pages+0x1ef ([kernel.kallsyms]) ffffffff9839691f load_elf_binary+0x39f ([kernel.kallsyms]) ffffffff98e00c45 __x86_indirect_thunk_rax+0x5 ([kernel.kallsyms]) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-01 13:16:08 +03:00
perf thread: Fix reference count initial state We should always return from thread__new(), the constructor, with the object with a reference count of one, so that: struct thread *thread = thread__new(); thread__put(thread); Will call thread__delete(). If any reference is made to that 'thread' variable, it better use thread__get(thread) to hold a reference. We were returning with thread->refcnt set to zero, fix it and some cases where thread__delete() was being called, which were not a problem because just one reference was being used, now that we set it to 1, use thread__put() instead. Reported-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-4b9mkuk66to4ecckpmpvqx6s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-11 19:11:23 -03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00
perf intel-pt: Fix decoding when there are address filters Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:48 +03:00
perf intel-pt: Read address filter from AUXTRACE_INFO event Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-23 17:38:46 +03:00
perf intel-pt: Add support for efficient time interval filtering Set up time ranges for efficient time interval filtering using the new "fast forward" facility. Because decoding is done in time order, intel_pt_time_filter() needs to look only at the next start or end timestamp - refer intel_pt_next_time(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190604130017.31207-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-04 16:00:09 +03:00
perf tools: Add Intel PT support Add support for Intel Processor Trace. Intel PT support fits within the new auxtrace infrastructure. Recording is supporting by identifying the Intel PT PMU, parsing options and setting up events. Decoding is supported by queuing up trace data by cpu or thread and then decoding synchronously delivering synthesized event samples into the session processing for tools to consume. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-07-17 19:33:41 +03:00