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Date: Tue, 17 Aug 2010 00:55:25 +0200 From: Robert Richter <robert.richter@....com> To: Cyrill Gorcunov <gorcunov@...il.com> CC: Peter Zijlstra <peterz@...radead.org>, Don Zickus <dzickus@...hat.com>, Lin Ming <ming.m.lin@...el.com>, Ingo Molnar <mingo@...e.hu>, "fweisbec@...il.com" <fweisbec@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Huang, Ying" <ying.huang@...el.com>, Yinghai Lu <yinghai@...nel.org>, Andi Kleen <andi@...stfloor.org> Subject: Re: [PATCH -v2] perf, x86: try to handle unknown nmis with running perfctrs 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. :) > 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. -Robert -- Advanced Micro Devices, Inc. Operating System Research Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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