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linux/tools/lib/perf/threadmap.c

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libperf: Add perf_thread_map struct Add perf_thread_map struct to libperf. It's added as a declaration into into: include/perf/threadmap.h which will be included by users. The perf_thread_map struct definition is added into: include/internal/threadmap.h which is not to be included by users, but shared within perf and libperf. We tried the total separation of the perf_thread_map struct in libperf, but it lead to complications and much bigger changes in perf code, so we decided to share the declaration. 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/20190721112506.12306-32-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:18 +02:00
libperf: Add perf_thread_map__new_dummy() function Moving the following functions: thread_map__new_dummy() thread_map__realloc() thread_map__set_pid() to libperf with the following names: perf_thread_map__new_dummy() perf_thread_map__realloc() perf_thread_map__set_pid() the other 2 functions are dependencies of the perf_thread_map__new_dummy() function. The perf_thread_map__realloc() function is not exported. 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/20190721112506.12306-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:19 +02:00
libperf: Add perf_thread_map__get()/perf_thread_map__put() Move the following functions: thread_map__get() thread_map__put() thread_map__comm() to libperf with the following names: perf_thread_map__get() perf_thread_map__put() perf_thread_map__comm() Add the perf_thread_map__comm() function for it to work/compile. 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/20190721112506.12306-34-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:20 +02:00
libperf: Add perf_thread_map__new_dummy() function Moving the following functions: thread_map__new_dummy() thread_map__realloc() thread_map__set_pid() to libperf with the following names: perf_thread_map__new_dummy() perf_thread_map__realloc() perf_thread_map__set_pid() the other 2 functions are dependencies of the perf_thread_map__new_dummy() function. The perf_thread_map__realloc() function is not exported. 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/20190721112506.12306-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:19 +02:00
libperf: Rename arguments of perf_thread_map APIs The "int thread" input arguments of some perf_thead_map APIs are index of the thread in the thread map. In order to avoid confusion and to make the APIs consistent with perf_cpu_map APIs, those arguments are renamed to "int idx". Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20220221102612.43879-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:12 +02:00
libperf: Add perf_thread_map__new_dummy() function Moving the following functions: thread_map__new_dummy() thread_map__realloc() thread_map__set_pid() to libperf with the following names: perf_thread_map__new_dummy() perf_thread_map__realloc() perf_thread_map__set_pid() the other 2 functions are dependencies of the perf_thread_map__new_dummy() function. The perf_thread_map__realloc() function is not exported. 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/20190721112506.12306-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:19 +02:00
libperf: Rename arguments of perf_thread_map APIs The "int thread" input arguments of some perf_thead_map APIs are index of the thread in the thread map. In order to avoid confusion and to make the APIs consistent with perf_cpu_map APIs, those arguments are renamed to "int idx". Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20220221102612.43879-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:12 +02:00
libperf: Add perf_thread_map__new_dummy() function Moving the following functions: thread_map__new_dummy() thread_map__realloc() thread_map__set_pid() to libperf with the following names: perf_thread_map__new_dummy() perf_thread_map__realloc() perf_thread_map__set_pid() the other 2 functions are dependencies of the perf_thread_map__new_dummy() function. The perf_thread_map__realloc() function is not exported. 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/20190721112506.12306-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:19 +02:00
libperf: Rename arguments of perf_thread_map APIs The "int thread" input arguments of some perf_thead_map APIs are index of the thread in the thread map. In order to avoid confusion and to make the APIs consistent with perf_cpu_map APIs, those arguments are renamed to "int idx". Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20220221102612.43879-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:12 +02:00
libperf: Add perf_thread_map__get()/perf_thread_map__put() Move the following functions: thread_map__get() thread_map__put() thread_map__comm() to libperf with the following names: perf_thread_map__get() perf_thread_map__put() perf_thread_map__comm() Add the perf_thread_map__comm() function for it to work/compile. 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/20190721112506.12306-34-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:20 +02:00
libperf: Rename arguments of perf_thread_map APIs The "int thread" input arguments of some perf_thead_map APIs are index of the thread in the thread map. In order to avoid confusion and to make the APIs consistent with perf_cpu_map APIs, those arguments are renamed to "int idx". Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20220221102612.43879-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:12 +02:00
libperf: Add perf_thread_map__get()/perf_thread_map__put() Move the following functions: thread_map__get() thread_map__put() thread_map__comm() to libperf with the following names: perf_thread_map__get() perf_thread_map__put() perf_thread_map__comm() Add the perf_thread_map__comm() function for it to work/compile. 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/20190721112506.12306-34-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:20 +02:00
libperf: Add API for allocating new thread map array The existing API perf_thread_map__new_dummy() allocates new thread map for one thread. I couldn't find a way to reallocate the map with more threads, or to allocate a new map for more than one thread. Having multiple threads in a thread map is essential for some use cases. That's why a new API is proposed, which allocates a new thread map for given number of threads: perf_thread_map__new_array() Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/linux-perf-users/20220221102628.43904-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:28 +02:00
libperf: Add perf_thread_map__new_dummy() function Moving the following functions: thread_map__new_dummy() thread_map__realloc() thread_map__set_pid() to libperf with the following names: perf_thread_map__new_dummy() perf_thread_map__realloc() perf_thread_map__set_pid() the other 2 functions are dependencies of the perf_thread_map__new_dummy() function. The perf_thread_map__realloc() function is not exported. 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/20190721112506.12306-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:19 +02:00
libperf: Add API for allocating new thread map array The existing API perf_thread_map__new_dummy() allocates new thread map for one thread. I couldn't find a way to reallocate the map with more threads, or to allocate a new map for more than one thread. Having multiple threads in a thread map is essential for some use cases. That's why a new API is proposed, which allocates a new thread map for given number of threads: perf_thread_map__new_array() Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/linux-perf-users/20220221102628.43904-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:28 +02:00
libperf: Add perf_thread_map__new_dummy() function Moving the following functions: thread_map__new_dummy() thread_map__realloc() thread_map__set_pid() to libperf with the following names: perf_thread_map__new_dummy() perf_thread_map__realloc() perf_thread_map__set_pid() the other 2 functions are dependencies of the perf_thread_map__new_dummy() function. The perf_thread_map__realloc() function is not exported. 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/20190721112506.12306-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:19 +02:00
libperf: Add perf_thread_map__get()/perf_thread_map__put() Move the following functions: thread_map__get() thread_map__put() thread_map__comm() to libperf with the following names: perf_thread_map__get() perf_thread_map__put() perf_thread_map__comm() Add the perf_thread_map__comm() function for it to work/compile. 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/20190721112506.12306-34-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:20 +02:00
libperf: Add API for allocating new thread map array The existing API perf_thread_map__new_dummy() allocates new thread map for one thread. I couldn't find a way to reallocate the map with more threads, or to allocate a new map for more than one thread. Having multiple threads in a thread map is essential for some use cases. That's why a new API is proposed, which allocates a new thread map for given number of threads: perf_thread_map__new_array() Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/linux-perf-users/20220221102628.43904-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:28 +02:00
libperf: Add perf_thread_map__get()/perf_thread_map__put() Move the following functions: thread_map__get() thread_map__put() thread_map__comm() to libperf with the following names: perf_thread_map__get() perf_thread_map__put() perf_thread_map__comm() Add the perf_thread_map__comm() function for it to work/compile. 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/20190721112506.12306-34-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-21 13:24:20 +02:00
libperf: Add perf_thread_map__nr/perf_thread_map__pid functions So it's part of libperf library as basic functions operating on perf_thread_map objects. 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/20190822111141.25823-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 13:11:41 +02:00
libperf: Rename arguments of perf_thread_map APIs The "int thread" input arguments of some perf_thead_map APIs are index of the thread in the thread map. In order to avoid confusion and to make the APIs consistent with perf_cpu_map APIs, those arguments are renamed to "int idx". Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20220221102612.43879-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:12 +02:00
libperf: Add perf_thread_map__nr/perf_thread_map__pid functions So it's part of libperf library as basic functions operating on perf_thread_map objects. 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/20190822111141.25823-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 13:11:41 +02:00
libperf threadmap: Don't segv for index 0 for the NULL 'struct perf_thread_map' pointer perf_thread_map__nr() returns length 1 if the perf_thread_map is NULL, meaning index 0 is valid. When perf_thread_map__pid() of index 0 is read then return the expected "any" -1 value. Assert this is only done for index 0. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Gautam Menghani <gautam@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20250519195148.1708988-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-19 12:51:38 -07:00
libperf: Rename arguments of perf_thread_map APIs The "int thread" input arguments of some perf_thead_map APIs are index of the thread in the thread map. In order to avoid confusion and to make the APIs consistent with perf_cpu_map APIs, those arguments are renamed to "int idx". Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20220221102612.43879-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-21 12:26:12 +02:00
libperf: Add perf_thread_map__nr/perf_thread_map__pid functions So it's part of libperf library as basic functions operating on perf_thread_map objects. 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/20190822111141.25823-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 13:11:41 +02:00
libperf threadmap: Add perf_thread_map__idx() Allow computation of thread map index from a PID. Note, with a 'struct perf_cpu_map' the sorted nature allows for a binary search to compute the index which isn't currently possible with a 'struct perf_thread_map' as they aren't guaranteed sorted. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Gautam Menghani <gautam@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20250519195148.1708988-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-05-19 12:51:39 -07:00