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| author | Namhyung Kim <namhyung.kim@lge.com> | 2012-05-16 18:45:48 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-05-16 12:12:05 -0300 |
| commit | 879d77d0cbe20ad1d6099a1e16f03b72c0649828 (patch) | |
| tree | 3496c1aa390f3d7c2899d0b2407bf9a9acd6dfe9 | |
| parent | aa22dd4990e38700b1855555aa0def5215859abb (diff) | |
| download | lwn-879d77d0cbe20ad1d6099a1e16f03b72c0649828.tar.gz lwn-879d77d0cbe20ad1d6099a1e16f03b72c0649828.zip | |
Revert 'perf evlist: Fix creation of cpu map'
The commit 55261f46702c ("perf evlist: Fix creation of cpu map") changed
to create a per-task event when no cpu target is specified. However it
caused a problem since perf-task do not allow event inheritance due to
scalability issues so that the result will contain samples only from
parent, not from its children.
So we should use perf-task-per-cpu events anyway to get the right
result. Revert it.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Analysed-by: Ingo Molnar <mingo@kernel.org>
Acked-and-tested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1337161549-9870-2-git-send-email-namhyung.kim@lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/evlist.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 80bef281eee0..87889f325678 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -609,10 +609,10 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, if (evlist->threads == NULL) return -1; - if (perf_target__has_cpu(target)) - evlist->cpus = cpu_map__new(target->cpu_list); - else + if (perf_target__has_task(target)) evlist->cpus = cpu_map__dummy_new(); + else + evlist->cpus = cpu_map__new(target->cpu_list); if (evlist->cpus == NULL) goto out_delete_threads; |