| Date | Thu, 21 May 2015 14:53:12 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 00/10] Various x86 pmu scheduling patches |
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On Thu, May 21, 2015 at 04:48:16AM -0700, Stephane Eranian wrote: > Peter, > > On Thu, May 21, 2015 at 4:17 AM, Peter Zijlstra <peterz@infradead.org> wrote: > > > > Unless I messed things up again, patch 1 and 2 are for perf/urgent and the rest > > can wait. > > > > I would still like to relax the HT scheduling constraint in case there are no > > funny events at all, but I've not yet found a nice way to do that. > > > Are you talking about the HT bug workaround? If there is no > corrupting event across HT threads, then scheduling is not impacted.
It is, commit c02cdbf60b51 ("perf/x86/intel: Limit to half counters when the HT workaround is enabled, to avoid exclusive mode starvation") is active irrespective of any active events.
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