Messages in this thread | | | Date | Thu, 21 Apr 2011 08:53:45 -0400 | From | Don Zickus <> | Subject | Re: [PATCH -tip] perf, x86: P4 PMU - Don't forget to clear cpuc->active_mask on overflow |
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On Wed, Apr 20, 2011 at 07:13:37PM +0400, Cyrill Gorcunov wrote: > It's not enough to simply disable event on overflow the cpuc->active_mask > should be cleared as well otherwise counter may stall in "active" even > in real being already disabled (which potentially may lead to the situation > that user may not use this counter further).
I also noticed this patch fixed some unknown NMIs on a P4 when I stressed the box
Acked-by: Don Zickus <dzickus@redhat.com>
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