| commit | 542e72fc90f5ed9eecb574f80f70868c7f296093 | [log] [tgz] |
|---|---|---|
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | Wed Jan 26 15:38:35 2011 +0100 |
| committer | Ingo Molnar <mingo@elte.hu> | Thu Feb 03 12:15:46 2011 +0100 |
| tree | b42abb2d44ed771759eee63ce00378df02d689ca | |
| parent | 9ffdc6c37df131f89d52001e0ef03091b158826f [diff] |
perf: Fix reading in perf_event_read() It is quite possible for the event to have been disabled between perf_event_read() sending the IPI and the CPU servicing the IPI and calling __perf_event_read(), hence revalidate the state. Reported-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>