Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755013AbZDUP43 (ORCPT ); Tue, 21 Apr 2009 11:56:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753148AbZDUP4T (ORCPT ); Tue, 21 Apr 2009 11:56:19 -0400 Received: from tomts13.bellnexxia.net ([209.226.175.34]:53754 "EHLO tomts13-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752306AbZDUP4T (ORCPT ); Tue, 21 Apr 2009 11:56:19 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ArYFAOeJ7UlMQW1W/2dsb2JhbACBT9N+g3oG Date: Tue, 21 Apr 2009 11:51:07 -0400 From: Mathieu Desnoyers To: Andi Kleen Cc: Jeremy Fitzhardinge , Steven Rostedt , linux-kernel@vger.kernel.org, Ingo Molnar , Andrew Morton , Thomas Gleixner , Peter Zijlstra , Frederic Weisbecker , Theodore Tso , Arjan van de Ven , Christoph Hellwig , Lai Jiangshan , Zhaolei , Li Zefan , KOSAKI Motohiro , Masami Hiramatsu , "Frank Ch. Eigler" , Tom Zanussi , Jiaying Zhang , Michael Rubin , Martin Bligh , Peter Zijlstra , Neil Horman , Eduard - Gabriel Munteanu , Pekka@firstfloor.org Subject: Re: [PATCH 2/8] tracing: create automated trace defines Message-ID: <20090421155106.GE3792@Krystal> References: <20090414172337.280621613@goodmis.org> <20090414172640.796858018@goodmis.org> <49E51FC1.8090306@goop.org> <20090415014548.GA7984@Krystal> <49E6065B.7080409@goop.org> <20090416023456.GC22378@Krystal> <49E69E76.9030608@goop.org> <20090416234410.GA20513@Krystal> <87zlebpzmk.fsf@basil.nowhere.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <87zlebpzmk.fsf@basil.nowhere.org> X-Editor: vi X-Info: http://krystal.dyndns.org:8080 X-Operating-System: Linux/2.6.21.3-grsec (i686) X-Uptime: 11:48:24 up 52 days, 12:14, 2 users, load average: 3.67, 2.69, 1.49 User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 819 Lines: 29 * Andi Kleen (andi@firstfloor.org) wrote: > Mathieu Desnoyers writes: > > > Given how slow function calls are, at least on x86, > > That was with frame pointers right? Frame pointers tend to make > function calls slow. > Looking at my .config, CONFIG_FRAME_POINTER is disabled here. So we should probably expect an even worse performance impact if we enable them. Mathieu > -Andi > -- > ak@linux.intel.com -- Speaking for myself only. > -- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 -- 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/