On Wed, Apr 15, 2015 at 06:35:48PM +0000, Liang, Kan wrote: > > > > > On Thu, Apr 09, 2015 at 12:37:43PM -0400, Kan Liang wrote: > > > @@ -280,8 +280,9 @@ static int alloc_pebs_buffer(int cpu) > > > ds->pebs_absolute_maximum = ds->pebs_buffer_base + > > > max * x86_pmu.pebs_record_size; > > > > > > - ds->pebs_interrupt_threshold = ds->pebs_buffer_base + > > > - thresh * x86_pmu.pebs_record_size; > > > + if (x86_pmu.intel_cap.pebs_format < 1) > > > + ds->pebs_interrupt_threshold = ds->pebs_buffer_base + > > > + x86_pmu.pebs_record_size; > > > > > > return 0; > > > } > > > > I can't seem to figure out what this is about.. help? > > We move AUTO_RELOAD and large PEBS check to intel_pmu_hw_config. > But for earlier platform, it calls x86_pmu_hw_config. > So we force single PEBS record for old platform.
We're talking about intel_pmu vs core_pmu right? I don't think core_pmu supports PEBS at all. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
