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With this information, > user can retrieve when and why each dispatch & preempt has occurred. > The vpa-dtl PMU exposes the Virtual Processor Area(VPA) DTL counters > via perf. > > - Patch 1 to 6 is perf tools side code changes to enable perf > report/script on perf.data file For all patches 1 to 6: Reviewed-by: Adrian Hunter