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libperf: Propagate maps only if necessary

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The current code propagate evsel's cpu map settings to evlist when it's
added to an evlist.  But the evlist->all_cpus and each evsel's cpus will
be updated in perf_evlist__set_maps() later.  No need to do it before
evlist's cpus are set actually.

In fact it discards this intermediate all_cpus maps at the beginning
of perf_evlist__set_maps().  Let's not do this.  It's only needed when
an evsel is added after the evlist cpu/thread maps are set.

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/20221003204647.1481128-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2022-10-03 13:46:44 -07:00
committed by Arnaldo Carvalho de Melo
parent 06b552ee37
commit 7e2450bb75
2 changed files with 5 additions and 7 deletions
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1
tools/lib/perf/include/internal/evlist.h
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@@ -19,6 +19,7 @@ struct perf_evlist {
int nr_entries;
int nr_groups;
bool has_user_cpus;
bool needs_map_propagation;
/**
* The cpus passed from the command line or all online CPUs by
* default.