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| author | Frederic Weisbecker <[email protected]> | 2013-08-02 16:29:55 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2013-08-16 15:55:51 +0000 |
| commit | 948b26b6ddd08a57cb95ebb0dc96fde2edd5c383 (patch) | |
| tree | 7b358b7d8ab23ffadd170aba686768a74d7b8b01 /tools/perf/util/python.c | |
| parent | perf: Roll back callchain buffer refcount under the callchain mutex (diff) | |
| download | kernel-948b26b6ddd08a57cb95ebb0dc96fde2edd5c383.tar.gz kernel-948b26b6ddd08a57cb95ebb0dc96fde2edd5c383.zip | |
perf: Account freq events globally
Freq events may not always be affine to a particular CPU. As such,
account_event_cpu() may crash if we account per cpu a freq event
that has event->cpu == -1.
To solve this, lets account freq events globally. In practice
this doesn't change much the picture because perf tools create
per-task perf events with one event per CPU by default. Profiling a
single CPU is usually a corner case so there is no much point in
optimizing things that way.
Reported-by: Jiri Olsa <[email protected]>
Suggested-by: Peter Zijlstra <[email protected]>
Signed-off-by: Frederic Weisbecker <[email protected]>
Tested-by: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Stephane Eranian <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/util/python.c')
0 files changed, 0 insertions, 0 deletions