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libperf: Populate system-wide evsel maps

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Setting proper cpu and thread maps for system wide evsels regardless of
user requested cpu in __perf_evlist__propagate_maps().  Those evsels
need to be active on all cpus always.  Do it in the libperf so that we
can guarantee it has proper maps.

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/20221003204647.1481128-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2022-10-03 13:46:43 -07:00 committed by Arnaldo Carvalho de Melo
parent d7184d9487
commit 06b552ee37
1 changed files with 9 additions and 6 deletions
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15
tools/lib/perf/evlist.c
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@ -40,11 +40,11 @@ static void __perf_evlist__propagate_maps(struct perf_evlist *evlist,
* We already have cpus for evsel (via PMU sysfs) so
* keep it, if there's no target cpu list defined.
*/
if (!evsel->own_cpus ||
(!evsel->system_wide && evlist->has_user_cpus) ||
(!evsel->system_wide &&
!evsel->requires_cpu &&
perf_cpu_map__empty(evlist->user_requested_cpus))) {
if (evsel->system_wide) {
perf_cpu_map__put(evsel->cpus);
evsel->cpus = perf_cpu_map__new(NULL);
} else if (!evsel->own_cpus || evlist->has_user_cpus ||
(!evsel->requires_cpu && perf_cpu_map__empty(evlist->user_requested_cpus))) {
perf_cpu_map__put(evsel->cpus);
evsel->cpus = perf_cpu_map__get(evlist->user_requested_cpus);
} else if (evsel->cpus != evsel->own_cpus) {
@ -52,7 +52,10 @@ static void __perf_evlist__propagate_maps(struct perf_evlist *evlist,
evsel->cpus = perf_cpu_map__get(evsel->own_cpus);
}
if (!evsel->system_wide) {
if (evsel->system_wide) {
perf_thread_map__put(evsel->threads);
evsel->threads = perf_thread_map__new_dummy();
} else {
perf_thread_map__put(evsel->threads);
evsel->threads = perf_thread_map__get(evlist->threads);
}