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Revert 'perf evlist: Fix creation of cpu map'

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The commit 55261f4670 ("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 <[email protected]>
Analysed-by: Ingo Molnar <[email protected]>
Acked-and-tested-by: Peter Zijlstra <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Namhyung Kim 2012-05-16 18:45:48 +09:00 • committed by Arnaldo Carvalho de Melo
commit 879d77d0cb
1 changed files with 3 additions and 3 deletions
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6
tools/perf/util/evlist.c
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@ -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;