On Tue, Aug 31, 2010 at 3:10 AM, Lin Ming <lin@xxxxxxx> wrote: >> >> perf_events: Fix time tracking for events with pid != -1 and cpu != -1 > > Hi, > > I thought pid != -1 and cpu != -1 is not valid. > This is in per-thread mode. This is what happens when you do perf record foo for instance. This is sampling, but you can do the same with counting. > # perf top -p 23268 -C 1 > WARNING: PID switch overriding CPU > > In which case this could be valid? > > Thanks, > Lin Ming > >> >> Per-thread events with a cpu filter, i.e., cpu != -1, were not >> reporting correct timings when the thread never ran on the >> monitored cpu. The time enabled was reported as a negative >> value. > -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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