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author | Namhyung Kim <namhyung@kernel.org> | 2022-10-03 13:46:46 -0700 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-06 08:03:53 -0300 |
commit | 182bb594e0678b3ceac99f4ec3daa5d22ea3d0ce (patch) | |
tree | 4ae7c492eaae49cb79ce36696357f1027d3e4dc6 /tools/perf/util/evlist.c | |
parent | 60ea006f72512fd7c36f16cdbe91f4fc284f8115 (diff) | |
download | linux-182bb594e0678b3ceac99f4ec3daa5d22ea3d0ce.tar.gz |
perf tools: Add evlist__add_sched_switch()
Add a help to create a system-wide sched_switch event. One merit is that it sets the system-wide bit before adding it to evlist so that the libperf can handle the cpu and thread maps correctly. Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20221003204647.1481128-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
-rw-r--r-- | tools/perf/util/evlist.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index dcf57b271ff1..6612b00949e7 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -288,6 +288,23 @@ struct evsel *evlist__add_aux_dummy(struct evlist *evlist, bool system_wide) return evsel; } +struct evsel *evlist__add_sched_switch(struct evlist *evlist, bool system_wide) +{ + struct evsel *evsel = evsel__newtp_idx("sched", "sched_switch", 0); + + if (IS_ERR(evsel)) + return evsel; + + evsel__set_sample_bit(evsel, CPU); + evsel__set_sample_bit(evsel, TIME); + + evsel->core.system_wide = system_wide; + evsel->no_aux_samples = true; + + evlist__add(evlist, evsel); + return evsel; +}; + int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs) { struct evsel *evsel, *n; |