Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030849AbWKOSoQ (ORCPT ); Wed, 15 Nov 2006 13:44:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030852AbWKOSoQ (ORCPT ); Wed, 15 Nov 2006 13:44:16 -0500 Received: from smtp.osdl.org ([65.172.181.4]:47025 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1030849AbWKOSoO (ORCPT ); Wed, 15 Nov 2006 13:44:14 -0500 Date: Wed, 15 Nov 2006 10:39:15 -0800 From: Andrew Morton To: Andi Kleen Cc: 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 , Linus Torvalds , gregkh@suse.de, Linux Kernel Mailing List , "Eric W. Biederman" , Andrey Borzenkov Subject: Re: [discuss] Re: 2.6.19-rc5: known regressions (v3) Message-Id: <20061115103915.46a70283.akpm@osdl.org> In-Reply-To: <200611151748.05989.ak@suse.de> References: <200611151150.11275.ak@suse.de> <455B4314.3010503@redhat.com> <200611151748.05989.ak@suse.de> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.6; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1154 Lines: 24 On Wed, 15 Nov 2006 17:48:05 +0100 Andi Kleen wrote: > > > OProfile has a simplistic view of the performance monitoring hardware. The > > routines in libop/op_alloc_counter.c determine what set of performance registers > > is available from the processor in use. There is no check to see what registers > > are actually available in the /dev/oprofile directory. > > > > opcontrol executes ophelp to determine which specific counters to count which > > events. The function map_event_to_counter() in libop/op_alloc_counter.c does the > > actual selection. It seems what is needed is for map_event_to_counter() to check > > to see which counters are available and mark the others as unavailable > > Thanks for the explanation. Can you please fix it and release a new version? > Documentation/Changes could be adapted then. > Meanwhile we should restore the NMI counter to fix this bug. - 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/