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perf/x86: Disable PEBS-LL in intel_pmu_pebs_disable() 

Make sure intel_pmu_pebs_disable() and intel_pmu_pebs_enable()
are symmetrical w.r.t. PEBS-LL and precise store.

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1371824448-7306-2-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Stephane Eranian 2013-06-21 16:20:41 +02:00 committed by Ingo Molnar
parent 2f7f73a520
commit 983433b581
1 changed files with 6 additions and 0 deletions
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6
arch/x86/kernel/cpu/perf_event_intel_ds.c
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@ -653,6 +653,12 @@ void intel_pmu_pebs_disable(struct perf_event *event)
struct hw_perf_event *hwc = &event->hw;
cpuc->pebs_enabled &= ~(1ULL << hwc->idx);
if (event->hw.constraint->flags & PERF_X86_EVENT_PEBS_LDLAT)
cpuc->pebs_enabled &= ~(1ULL << (hwc->idx + 32));
else if (event->hw.constraint->flags & PERF_X86_EVENT_PEBS_ST)
cpuc->pebs_enabled &= ~(1ULL << 63);
if (cpuc->enabled)
wrmsrl(MSR_IA32_PEBS_ENABLE, cpuc->pebs_enabled);