diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2020-01-10 18:15:37 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-01-14 18:02:19 +0300 |
| commit | cb71f7d43ece3d5a4f400f510c61b2ec7c9ce9a1 (patch) | |
| tree | c634b8ca75de9215205c4638fa5e1093fd1c5018 /tools/lib/perf | |
| parent | c3314a74f86dc00827e0945c8e5039fc3aebaa3c (diff) | |
| download | linux-cb71f7d43ece3d5a4f400f510c61b2ec7c9ce9a1.tar.xz | |
libperf: Setup initial evlist::all_cpus value
Jann Horn reported crash in perf ftrace because evlist::all_cpus isn't
initialized if there's evlist without events, which is the case for perf
ftrace.
Adding initial initialization of evlist::all_cpus from given cpus,
regardless of events in the evlist.
Fixes: 7736627b865d ("perf stat: Use affinity for closing file descriptors")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200110151537.153012-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/perf')
| -rw-r--r-- | tools/lib/perf/evlist.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c index ae9e65aa2491..5b9f2ca50591 100644 --- a/tools/lib/perf/evlist.c +++ b/tools/lib/perf/evlist.c @@ -164,6 +164,9 @@ void perf_evlist__set_maps(struct perf_evlist *evlist, evlist->threads = perf_thread_map__get(threads); } + if (!evlist->all_cpus && cpus) + evlist->all_cpus = perf_cpu_map__get(cpus); + perf_evlist__propagate_maps(evlist); } |