Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030929AbWKOTYD (ORCPT ); Wed, 15 Nov 2006 14:24:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030926AbWKOTYB (ORCPT ); Wed, 15 Nov 2006 14:24:01 -0500 Received: from mx1.suse.de ([195.135.220.2]:15043 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S1030922AbWKOTX7 (ORCPT ); Wed, 15 Nov 2006 14:23:59 -0500 From: Andi Kleen To: Linus Torvalds Subject: Re: [discuss] Re: 2.6.19-rc5: known regressions (v3) Date: Wed, 15 Nov 2006 20:23:53 +0100 User-Agent: KMail/1.9.5 Cc: Andrew Morton , discuss@x86-64.org, William Cohen , Eric Dumazet , Komuro , Ernst Herzberg , Andre Noll , oprofile-list@lists.sourceforge.net, Jens Axboe , linux-usb-devel@lists.sourceforge.net, phil.el@wanadoo.fr, Adrian Bunk , Ingo Molnar , Alan Stern , linux-pci@atrey.karlin.mff.cuni.cz, Stephen Hemminger , Prakash Punnoor , Len Brown , Alex Romosan , gregkh@suse.de, Linux Kernel Mailing List , "Eric W. Biederman" , Andrey Borzenkov References: <200611151945.31535.ak@suse.de> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200611152023.53960.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 933 Lines: 29 > The fact is, it used to work, and the kernel changed interfaces, so now it > doesn't. No, it didn't work. oprofile may have done something, but it just silently killed the NMI watchdog in the process. That was never acceptable. Now we do proper accounting of NMI sources and also proper allocation of performance counters. > Yes, "oprofile" should be fixed to not depend on that, but the kernel > shouldn't change the interfaces, and we should add back the zero entry. That would break the nmi watchdog again. Anyways, there is a sysctl to disable the nmi watchdog if someone is desperate. But I think it is clearly oprofile who did wrong here and needs to be fixed. -Andi - 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/