Messages in this thread | | | Date | Tue, 17 Aug 2010 19:23:08 +0400 | From | Cyrill Gorcunov <> | Subject | Re: [PATCH -v2] perf, x86: try to handle unknown nmis with running perfctrs |
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On Tue, Aug 17, 2010 at 12:55:25AM +0200, Robert Richter wrote: > On 16.08.10 15:06:59, Cyrill Gorcunov wrote: > > I suspect Peter was supposed to be in To: field ;) > > It was the attempt to answer 2 mails with one. :) >
ah, I see ;)
> > Robert, I think we still may miss unknown irq, consider the case when > > unknown nmi is latched while you handle nmi from perf and what is > > more interesting several counters may be overflowed. So you set > > delta small enough and second (unknown nmi) will be in range and > > treated as being perf back-to-back, or I miss something from patch? > > Yes, that's true, but before you have to enable your Infinite > Improbability Drive. >
not at all, it's absolutely legit to happen ;)
> -Robert > > -- > Advanced Micro Devices, Inc. > Operating System Research Center > -- Cyrill
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