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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2011-01-26 09:38:35 -0500
committerIngo Molnar <mingo@elte.hu>2011-02-03 06:15:46 -0500
commit542e72fc90f5ed9eecb574f80f70868c7f296093 (patch)
treeb42abb2d44ed771759eee63ce00378df02d689ca /tools
parent9ffdc6c37df131f89d52001e0ef03091b158826f (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>
Diffstat (limited to 'tools')
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