kernel/linux.git/tools/perf/util/thread_map.c, branch v6.19.11

perf thread_map: Remove uid options

2025-06-09T18:18:18+00:00

Now the target doesn't have a uid, it is handled through BPF filters, remove the uid options to thread_map creation. Tidy up the functions used in tests to avoid passing unused arguments. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250604174545.2853620-11-irogers@google.com Signed-off-by: Namhyung Kim

perf thread_map: Skip exited threads when scanning /proc

2024-02-22T17:11:03+00:00

Scanning /proc is inherently racy. Scanning /proc/pid/task within that is also racy as the pid can terminate. Rather than failing in __thread_map__new_all_cpus, skip pids for such failures. Signed-off-by: Ian Rogers Cc: James Clark Cc: Justin Stitt Cc: Bill Wendling Cc: Nick Desaulniers Cc: Yang Jihong Cc: Nathan Chancellor Cc: Kan Liang Cc: Athira Jajeev Cc: llvm@lists.linux.dev Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240221034155.1500118-2-irogers@google.com

perf thread_map: Free strlist on normal path in thread_map__new_by_tid_str()

2024-02-09T22:08:41+00:00

slist needs to be freed in both error path and normal path in thread_map__new_by_tid_str(). Fixes: b52956c961be3a04 ("perf tools: Allow multiple threads or processes in record, stat, top") Reviewed-by: Arnaldo Carvalho de Melo Signed-off-by: Yang Jihong Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240206083228.172607-6-yangjihong1@huawei.com

perf thread_map: Reduce exposure of libperf internal API

2022-11-16T15:17:15+00:00

Remove unnecessary include of internal threadmap.h and refcount.h in thread_map.h. Switch to using public APIs when possible or including the internal header file in the C file. Fix a transitive dependency in openat-syscall.c broken by the clean up. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Alexander Shishkin Cc: Andrii Nakryiko Cc: Jiri Olsa Cc: Mark Rutland Cc: Masahiro Yamada Cc: Nick Desaulniers Cc: Nicolas Schier Cc: Peter Zijlstra Cc: Stephane Eranian Cc: bpf@vger.kernel.org Link: http://lore.kernel.org/lkml/20221109184914.1357295-13-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix

2019-08-29T11:36:12+00:00

Even more, to have a "perf_record_" prefix, so that they match the PERF_RECORD_ enum they map to. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190828135717.7245-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf: Add perf_thread_map__nr/perf_thread_map__pid functions

2019-08-22T20:16:57+00:00

So it's part of libperf library as basic functions operating on perf_thread_map objects. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190822111141.25823-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf: Add perf_thread_map__get()/perf_thread_map__put()

2019-07-29T21:34:44+00:00

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 Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-34-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf: Add perf_thread_map__new_dummy() function

2019-07-29T21:34:44+00:00

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 Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Rename struct thread_map to struct perf_thread_map

2019-07-29T21:34:42+00:00

Rename struct thread_map to struct perf_thread_map, so it could be part of libperf. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Use zfree() where applicable

2019-07-09T13:13:27+00:00

In places where the equivalent was already being done, i.e.: free(a); a = NULL; And in placs where struct members are being freed so that if we have some erroneous reference to its struct, then accesses to freed members will result in segfaults, which we can detect faster than use after free to areas that may still have something seemingly valid. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-jatyoofo5boc1bsvoig6bb6i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo