Messages in this thread | | | Subject | Re: [DRAFT PATCH 2/3] perf: Implement Nehalem uncore pmu | From | Peter Zijlstra <> | Date | Thu, 04 Nov 2010 20:28:49 +0100 |
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On Tue, 2010-11-02 at 17:59 +0100, Stephane Eranian wrote: > I think using uncore PMU to measure per-thread is pretty much useless. > Maybe it should not even be allowed. There is no way you can correlate > the counts you're getting to a place in your program. Or put differently, > sampling in per-thread mode using uncore is useless.
Right, per-task uncore event should not be allowed. I think it as simple as setting pmu::task_ctx_nr = perf_invalid_context.
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