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| author | Yang Jihong <yangjihong1@huawei.com> | 2023-08-12 11:49:08 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-09-12 23:31:59 +0300 |
| commit | 38d8d013a525daf4f98a2b53065d8e89d5f810dd (patch) | |
| tree | 9cb5a0f4dec6c8ccd4b98215b2ab34151162809a /tools/perf/Documentation | |
| parent | 26b7254ff100fdc9f06eb8f5e2cd7424605fce2b (diff) | |
| download | linux-38d8d013a525daf4f98a2b53065d8e89d5f810dd.tar.xz | |
perf kwork: Add sched record support
The kwork_class type of sched is added to support recording and parsing of
sched_switch events.
As follows:
# perf kwork -h
Usage: perf kwork [<options>] {record|report|latency|timehist}
-D, --dump-raw-trace dump raw trace in ASCII
-f, --force don't complain, do it
-k, --kwork <kwork> list of kwork to profile (irq, softirq, workqueue, sched, etc)
-v, --verbose be more verbose (show symbol address, etc)
# perf kwork -k sched record true
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.083 MB perf.data (47 samples) ]
# perf evlist
sched:sched_switch
dummy:HG
# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Link: https://lore.kernel.org/r/20230812084917.169338-8-yangjihong1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-kwork.txt | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-kwork.txt b/tools/perf/Documentation/perf-kwork.txt index 482d6c52e2ed..2092ab916ea9 100644 --- a/tools/perf/Documentation/perf-kwork.txt +++ b/tools/perf/Documentation/perf-kwork.txt @@ -66,7 +66,7 @@ OPTIONS -k:: --kwork:: - List of kwork to profile (irq, softirq, workqueue, etc) + List of kwork to profile (irq, softirq, workqueue, sched, etc) -v:: --verbose:: |