Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751189AbWIQOId (ORCPT ); Sun, 17 Sep 2006 10:08:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751157AbWIQOId (ORCPT ); Sun, 17 Sep 2006 10:08:33 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:28317 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1751138AbWIQOIc (ORCPT ); Sun, 17 Sep 2006 10:08:32 -0400 Date: Sun, 17 Sep 2006 16:00:09 +0200 From: Ingo Molnar To: Frederik Deweerdt Cc: Mathieu Desnoyers , Jes Sorensen , Roman Zippel , Andrew Morton , tglx@linutronix.de, karim@opersys.com, Paul Mundt , linux-kernel@vger.kernel.org, Christoph Hellwig , Ingo Molnar , Greg Kroah-Hartman , Tom Zanussi , ltt-dev@shafik.org, Michel Dagenais Subject: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108 Message-ID: <20060917140009.GA15534@elte.hu> References: <20060915200559.GB30459@elte.hu> <20060915202233.GA23318@Krystal> <450BCAF1.2030205@sgi.com> <20060916172419.GA15427@Krystal> <20060916173552.GA7362@elte.hu> <20060916175606.GA2837@Krystal> <20060916191043.GA22558@elte.hu> <20060916193745.GA29022@elte.hu> <20060917101356.GA1982@slug> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060917101356.GA1982@slug> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: -2.9 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.9 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_50 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts 0.5 BAYES_50 BODY: Bayesian spam probability is 40 to 60% [score: 0.5000] -0.1 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 983 Lines: 28 * Frederik Deweerdt wrote: > On Sat, Sep 16, 2006 at 09:37:45PM +0200, Ingo Molnar wrote: > > ---------------> > > Subject: [patch] kprobes: speed INT3 trap handling up on i386 > > From: Ingo Molnar > > > > speed up kprobes trap handling by special-casing kernel-space > > INT3 traps (which do not occur otherwise) and doing a kprobes > > handler check - instead of redirecting over the i386-die-notifier > > chain. > > > Hi Ingo, > > Not that it would make any difference to the actual kprobe > performance, but I think that not using the die-notifier chain makes > the DIE_INT3 handling in kprobe_exceptions_notify() useless. yeah, indeed - i'll add your patch to the kprobes patchset. 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/