On Thu, Apr 09, 2015 at 12:37:43PM -0400, Kan Liang wrote:
> + /*
> + * 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 */
This is a good hint your patches are ordered wrong.
> + (hwc->flags & PERF_X86_EVENT_AUTO_RELOAD)) {
> + 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;
> + }
> +
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