Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751286AbWITNcc (ORCPT ); Wed, 20 Sep 2006 09:32:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751291AbWITNcc (ORCPT ); Wed, 20 Sep 2006 09:32:32 -0400 Received: from tomts36-srv.bellnexxia.net ([209.226.175.93]:46507 "EHLO tomts36-srv.bellnexxia.net") by vger.kernel.org with ESMTP id S1751286AbWITNcb (ORCPT ); Wed, 20 Sep 2006 09:32:31 -0400 Date: Wed, 20 Sep 2006 09:32:29 -0400 From: Mathieu Desnoyers To: Masami Hiramatsu Cc: "Frank Ch. Eigler" , Paul Mundt , linux-kernel , Jes Sorensen , Andrew Morton , Tom Zanussi , Richard J Moore , Michel Dagenais , Christoph Hellwig , Greg Kroah-Hartman , Thomas Gleixner , William Cohen , "Martin J. Bligh" , Ingo Molnar , ltt-dev@shafik.org, systemtap@sources.redhat.com Subject: Re: [PATCH] Linux Kernel Markers Message-ID: <20060920133229.GA17032@Krystal> References: <20060918234502.GA197@Krystal> <4511401B.4070809@hitachi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <4511401B.4070809@hitachi.com> X-Editor: vi X-Info: http://krystal.dyndns.org:8080 X-Operating-System: Linux/2.4.32-grsec (i686) X-Uptime: 09:30:18 up 28 days, 10:38, 2 users, load average: 0.22, 0.28, 0.20 User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1652 Lines: 40 * Masami Hiramatsu (masami.hiramatsu.pt@hitachi.com) wrote: > Hi, > > Mathieu Desnoyers wrote: > > Hello, > > > > Following this huge discussion thread, I tried to come with a marker mechanism > > (which is something everyone seems to agree that is a necessity) that would be > > useful to each kind of tracing (dynamic and static) (concerned projects : > > SystemTAP, LKET, LKST, LTTng) and even combinations of those. Religious > > considerations aside, I really think that this kind of generic markup is > > necessary to fill *everybody*'s need. If I forgot about a specific genericity > > aspect, please tell me. > > > > I take for agreed that both static and dynamic tracing are useful for different > > needs and that a full markup must support both and combinations, letting the > > user or the distribution choose. > > Basically, I like this static marker concept. > But I wonder why wouldn't you use the architecture-independent > marker which SystemTap already supports. > If we use NOPs, it highly depends on architecture, and is hard > to port. > Hi Masami, Are you talking about the marker presented by Frank in his OLS paper ( void dest() = NULL; if(dest) dest()) ? I think it is a very good idea to use it instead of nops. Mathieu OpenPGP public key: http://krystal.dyndns.org:8080/key/compudj.gpg 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/