Messages in this thread | | | Date | Tue, 22 Jul 2014 18:16:18 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH v3 5/9] perf, x86: large PEBS interrupt threshold |
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> + /* > + * When the event is constrained enough we can use a larger > + * threshold and run the event with less frequent PMI. > + */ > + if (0 && /* disable this temporarily */
Where in the patchkit does it get reenabled?
-Andi
> + (hwc->flags & PERF_X86_EVENT_AUTO_RELOAD) && > + !(event->attr.sample_type & ~PEBS_FREERUNNING_FLAGS)) { > + threshold = ds->pebs_absolute_maximum - > + x86_pmu.max_pebs_events * x86_pmu.pebs_record_size; > + } else { > + threshold = ds->pebs_buffer_base + x86_pmu.pebs_record_size; > + } > + if (first_pebs || ds->pebs_interrupt_threshold > threshold) > + ds->pebs_interrupt_threshold = threshold;
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