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| author | Yang Jihong <yangjihong1@huawei.com> | 2023-09-04 02:33:35 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-09-12 17:31:22 -0300 |
| commit | f6ff1c760431be34e4daaa44f242be911becd998 (patch) | |
| tree | b18de5849c4e32f844ff27da9e680e6cb6ef70b9 /tools/lib | |
| parent | b333067ff3b0ee63e226a06633f3df12491028ab (diff) | |
| download | linux-f6ff1c760431be34e4daaa44f242be911becd998.tar.gz | |
perf evlist: Add perf_evlist__go_system_wide() helper
For dummy events that keep tracking, we may need to modify its cpu_maps.
For example, change the cpu_maps to record sideband events for all CPUS.
Add perf_evlist__go_system_wide() helper to support this scenario.
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.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: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20230904023340.12707-2-yangjihong1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/perf/evlist.c | 9 | ||||
| -rw-r--r-- | tools/lib/perf/include/internal/evlist.h | 2 |
2 files changed, 11 insertions, 0 deletions
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c index b8b066d0dc5e4..3acbbccc19019 100644 --- a/tools/lib/perf/evlist.c +++ b/tools/lib/perf/evlist.c @@ -738,3 +738,12 @@ int perf_evlist__nr_groups(struct perf_evlist *evlist) } return nr_groups; } + +void perf_evlist__go_system_wide(struct perf_evlist *evlist, struct perf_evsel *evsel) +{ + if (!evsel->system_wide) { + evsel->system_wide = true; + if (evlist->needs_map_propagation) + __perf_evlist__propagate_maps(evlist, evsel); + } +} diff --git a/tools/lib/perf/include/internal/evlist.h b/tools/lib/perf/include/internal/evlist.h index 3339bc2f17655..d86ffe8ed483e 100644 --- a/tools/lib/perf/include/internal/evlist.h +++ b/tools/lib/perf/include/internal/evlist.h @@ -135,4 +135,6 @@ int perf_evlist__id_add_fd(struct perf_evlist *evlist, void perf_evlist__reset_id_hash(struct perf_evlist *evlist); void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader); + +void perf_evlist__go_system_wide(struct perf_evlist *evlist, struct perf_evsel *evsel); #endif /* __LIBPERF_INTERNAL_EVLIST_H */ |