Messages in this thread Patch in this message | | | Date | Mon, 20 Jan 2020 08:27:13 -0000 | From | "tip-bot2 for Jiri Olsa" <> | Subject | [tip: perf/core] libperf: Setup initial evlist::all_cpus value |
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The following commit has been merged into the perf/core branch of tip:
Commit-ID: cb71f7d43ece3d5a4f400f510c61b2ec7c9ce9a1 Gitweb: https://git.kernel.org/tip/cb71f7d43ece3d5a4f400f510c61b2ec7c9ce9a1 Author: Jiri Olsa <jolsa@kernel.org> AuthorDate: Fri, 10 Jan 2020 16:15:37 +01:00 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> CommitterDate: Tue, 14 Jan 2020 12:02:19 -03:00
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> --- tools/lib/perf/evlist.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c index ae9e65a..5b9f2ca 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); }
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