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: NStephane Eranian <eranian@google.com>
Signed-off-by: NPeter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1371824448-7306-2-git-send-email-eranian@google.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

arch/x86/kernel/cpu/perf_event_intel_ds.c

@@ -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);