Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753501Ab0HWIx4 (ORCPT ); Mon, 23 Aug 2010 04:53:56 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:48601 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751202Ab0HWIxx (ORCPT ); Mon, 23 Aug 2010 04:53:53 -0400 Date: Mon, 23 Aug 2010 10:53:39 +0200 From: Ingo Molnar To: Don Zickus Cc: Peter Zijlstra , Robert Richter , Cyrill Gorcunov , Lin Ming , "fweisbec@gmail.com" , "linux-kernel@vger.kernel.org" , "Huang, Ying" , Yinghai Lu , Andi Kleen Subject: Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs Message-ID: <20100823085339.GA26713@elte.hu> References: <9g472epksbkxhgmw6a3qh8r5.1282316687153@email.android.com> <20100820152510.GA4167@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100820152510.GA4167@elte.hu> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1130 Lines: 41 * Ingo Molnar wrote: > > * Don Zickus wrote: > > > I'll test tip later today to see if I can reproduce it. > > > > Cheers, > > Don > > > > Ingo Molnar wrote: > > > > > > > >it's not working so well, i'm getting: > > > > > > Uhhuh. NMI received for unknown reason 00 on CPU 9. > > > Do you have a strange power saving mode enabled? > > > Dazed and confused, but trying to continue > > > > > >on a nehalem box, after a perf top and perf stat run. > > FYI, it does not trigger on an AMD box. Ok, to not hold up the perf/urgent flow i zapped these two commits for the time being: 4a31beb: perf, x86: Fix handle_irq return values 8e3e42b: perf, x86: Try to handle unknown nmis with an enabled PMU We can apply them if they take a form that dont introduce a different kind of (and more visible) regression. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/