Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030213AbWISM34 (ORCPT ); Tue, 19 Sep 2006 08:29:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030214AbWISM34 (ORCPT ); Tue, 19 Sep 2006 08:29:56 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:2521 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1030213AbWISM3z (ORCPT ); Tue, 19 Sep 2006 08:29:55 -0400 Date: Tue, 19 Sep 2006 13:29:33 +0100 From: Christoph Hellwig To: Roman Zippel Cc: Ingo Molnar , Alan Cox , "Frank Ch. Eigler" , karim@opersys.com, Tim Bird , Mathieu Desnoyers , linux-kernel@vger.kernel.org, Christoph Hellwig , Andrew Morton , Ingo Molnar , Greg Kroah-Hartman , Thomas Gleixner , Tom Zanussi , ltt-dev@shafik.org, Michel Dagenais Subject: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108 Message-ID: <20060919122933.GA11337@infradead.org> Mail-Followup-To: Christoph Hellwig , Roman Zippel , Ingo Molnar , Alan Cox , "Frank Ch. Eigler" , karim@opersys.com, Tim Bird , Mathieu Desnoyers , linux-kernel@vger.kernel.org, Andrew Morton , Ingo Molnar , Greg Kroah-Hartman , Thomas Gleixner , Tom Zanussi , ltt-dev@shafik.org, Michel Dagenais References: <1158327696.29932.29.camel@localhost.localdomain> <1158331277.29932.66.camel@localhost.localdomain> <450ABA2A.9060406@opersys.com> <1158332324.29932.82.camel@localhost.localdomain> <1158345108.29932.120.camel@localhost.localdomain> <20060915181208.GA17581@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1303 Lines: 29 On Fri, Sep 15, 2006 at 09:10:44PM +0200, Roman Zippel wrote: > Hi, > > On Fri, 15 Sep 2006, Ingo Molnar wrote: > > > > Ar Gwe, 2006-09-15 am 13:08 -0400, ysgrifennodd Frank Ch. Eigler: > > > > Alan Cox writes: > > > > - where 1000-cycle int3-dispatching overheads too high > > > > > > Why are your despatching overheads 1000 cycles ? (and if its due to > > > int3 why are you using int 3 8)) > > > > this is being worked on actively: there's the "djprobes" patchset, which > > includes a simplified disassembler to analyze common target code and can > > thus insert much faster, call-a-trampoline-function based tracepoints > > that are just as fast as (or faster than) compile-time, static > > tracepoints. > > Who is going to implement this for every arch? > Is this now the official party line that only archs, which implement all > of this, can make use of efficient tracing? Come on, stop trying to be an asshole. It's always been the case that to use new functionality you have to add arch code where nessecary. - 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/