Messages in this thread | | | Date | Tue, 10 Mar 2015 12:27:23 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH 1/3] arm/pmu: Reject groups spanning multiple hardware PMUs |
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On Mon, Mar 09, 2015 at 12:46:30PM +0000, Suzuki K. Poulose wrote: > From: "Suzuki K. Poulose" <suzuki.poulose@arm.com> > > Don't allow grouping hardware events from different PMUs > (eg. CCI + CPU).
Uhm, how does this work? If we have multiple hardware PMUs we'll stop scheduling events after the first failed event schedule. This can leave one of the PMUs severely under utilized.
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