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55b4ce61a2
- Be more robust when drawing arrows in the annotation TUI, avoiding a segfault when jump instructions have as a target addresses in functions other that the one currently being annotated. The full fix will come in the following days, when jumping to other functions will work as call instructions (Arnaldo Carvalho de Melo) - Allow asking for the maximum allowed sample rate in 'top' and 'record', i.e. 'perf record -F max' will read the kernel.perf_event_max_sample_rate sysctl and use it (Arnaldo Carvalho de Melo) - When the user specifies a freq above kernel.perf_event_max_sample_rate, Throttle it down to that max freq, and warn the user about it, add as well --strict-freq so that the previous behaviour of not starting the session when the desired freq can't be used can be selected (Arnaldo Carvalho de Melo) - Find 'call' instruction target symbol at parsing time, used so far in the TUI, part of the infrastructure changes that will end up allowing for jumps to navigate to other functions, just like 'call' instructions. (Arnaldo Carvalho de Melo) - Use xyarray dimensions to iterate fds in 'perf stat' (Andi Kleen) - Ignore threads for which the current user hasn't permissions when enabling system-wide --per-thread (Jin Yao) - Fix some backtrace perf test cases to use 'perf record' + 'perf script' instead, till 'perf trace' starts using ordered_events or equivalent to avoid symbol resolving artifacts due to reordering of PERF_RECORD_MMAP events (Jiri Olsa) - Fix crash in 'perf record' pipe mode, it needs to allocate the ID array even for a single event, unlike non-pipe mode (Jiri Olsa) - Make annoying fallback message on older kernels with newer 'perf top' binaries trying to use overwrite mode and that not being present in the older kernels (Kan Liang) - Switch last users of old APIs to the newer perf_mmap__read_event() one, then discard those old mmap read forward APIs (Kan Liang) - Fix the usage on the 'perf kallsyms' man page (Sangwon Hong) - Simplify cgroup arguments when tracking multiple events (weiping zhang) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEELb9bqkb7Te0zijNb1lAW81NSqkAFAlqdUyoACgkQ1lAW81NS qkCu7w/6AjWhNqvIRnOkBBKkAObB4zh8NLzqJQhQRvz2cVwhNYIoyN3J4xdphsSb KM7U06N8vpO/GjAC9fpe8a9LfXNDCziIYH2l5lwWXJvF9VO38xfjS7IvuxJZPA4z aIDE536lzgS4DT2VpmpsBgZTlWcoj07aMeiGXw0Sf2LXHFsrIYFtw1K5VWtJbeS4 ANSqiMagCk+pphZlqEPJS60mRZCc1uUmqV4L5c06TJzfMs2hkS2jyRELmo/5TEtR gaVqBlOfH4gzk2YgPzh1osYFek6H8Y7JK4ZzrNkNQzNJyiQwUpY6bmJj7VLKkmNo SIuBeGFYWQFFj1q6gXB3MUI4NEwQ1svqKMAYixnzqRQu1XcsEmyOSBX3S/DZ1T2N KY7bJSBCZvwbBmy4KMiOKz+7oEnF40LUd2qNEUqk7A6ByV4WPXtRpjeAyoJlzE14 VVpmToSeMkDnTz2JhB/IRvQAuyMrETJvV2M5XCmko7GhsePIeNGsmB6DV7gS39qV QgGEixkZ1m+M3VOExWw75bmCQzpPqYdiBqRZ1pDfZUe5TO345X/3eyL40L83Uga2 Of+aknCGEFa6cWLjbqhd51OUudlrgQ0VI3vneeHUeA4sWlcISTEu2TXm/cjHWtJA wPHbpJSH7AGqZbGSZiEvYZwToUYRZS3N7UHvLmi8WSvR0FVMj+0= =TNRi -----END PGP SIGNATURE----- Merge tag 'perf-core-for-mingo-4.17-20180305' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: - Be more robust when drawing arrows in the annotation TUI, avoiding a segfault when jump instructions have as a target addresses in functions other that the one currently being annotated. The full fix will come in the following days, when jumping to other functions will work as call instructions (Arnaldo Carvalho de Melo) - Allow asking for the maximum allowed sample rate in 'top' and 'record', i.e. 'perf record -F max' will read the kernel.perf_event_max_sample_rate sysctl and use it (Arnaldo Carvalho de Melo) - When the user specifies a freq above kernel.perf_event_max_sample_rate, Throttle it down to that max freq, and warn the user about it, add as well --strict-freq so that the previous behaviour of not starting the session when the desired freq can't be used can be selected (Arnaldo Carvalho de Melo) - Find 'call' instruction target symbol at parsing time, used so far in the TUI, part of the infrastructure changes that will end up allowing for jumps to navigate to other functions, just like 'call' instructions. (Arnaldo Carvalho de Melo) - Use xyarray dimensions to iterate fds in 'perf stat' (Andi Kleen) - Ignore threads for which the current user hasn't permissions when enabling system-wide --per-thread (Jin Yao) - Fix some backtrace perf test cases to use 'perf record' + 'perf script' instead, till 'perf trace' starts using ordered_events or equivalent to avoid symbol resolving artifacts due to reordering of PERF_RECORD_MMAP events (Jiri Olsa) - Fix crash in 'perf record' pipe mode, it needs to allocate the ID array even for a single event, unlike non-pipe mode (Jiri Olsa) - Make annoying fallback message on older kernels with newer 'perf top' binaries trying to use overwrite mode and that not being present in the older kernels (Kan Liang) - Switch last users of old APIs to the newer perf_mmap__read_event() one, then discard those old mmap read forward APIs (Kan Liang) - Fix the usage on the 'perf kallsyms' man page (Sangwon Hong) - Simplify cgroup arguments when tracking multiple events (weiping zhang) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.