diff options
| author | Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> | 2022-01-17 21:34:27 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-02-10 16:25:53 -0300 |
| commit | 3217e9fecf118d5dcabdd68d91e0c6afcb4c3e1b (patch) | |
| tree | 9f60c3d41c7070266ef94a51bda19ec9154b3d13 /tools/perf/util/record.h | |
| parent | 1e5de7d9c6ded0722736eb6e58c72b18937efc06 (diff) | |
perf record: Start threads in the beginning of trace streaming
Start thread in detached state because its management is implemented
via messaging to avoid any scaling issues. Block signals prior thread
start so only main tool thread would be notified on external async
signals during data collection. Thread affinity mask is used to assign
eligible CPUs for the thread to run. Wait and sync on thread start using
thread ack pipe.
Reviewed-by: Riccardo Mancini <rickyman7@gmail.com>
Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Riccardo Mancini <rickyman7@gmail.com>
Acked-by: Namhyung Kim <namhyung@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/95784dd9f7c81ee408eab27b50b4c09ad4cf7be6.1642440724.git.alexey.v.bayduraev@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/record.h')
| -rw-r--r-- | tools/perf/util/record.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/record.h b/tools/perf/util/record.h index ef6c2715fdd9..ad08c092f3dd 100644 --- a/tools/perf/util/record.h +++ b/tools/perf/util/record.h @@ -78,6 +78,7 @@ struct record_opts { int ctl_fd_ack; bool ctl_fd_close; int synth; + int threads_spec; }; extern const char * const *record_usage; |