From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765736AbXLMWSa (ORCPT ); Thu, 13 Dec 2007 17:18:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763795AbXLMWSQ (ORCPT ); Thu, 13 Dec 2007 17:18:16 -0500 Received: from tomts36.bellnexxia.net ([209.226.175.93]:49562 "EHLO tomts36-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761159AbXLMWSO (ORCPT ); Thu, 13 Dec 2007 17:18:14 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Aq4HAGw+YUdMROHU/2dsb2JhbACBWqhm Date: Thu, 13 Dec 2007 17:18:06 -0500 From: Mathieu Desnoyers To: Andrew Morton Cc: linux-kernel@vger.kernel.org, mingo@elte.hu Subject: Re: Next patches for the 2.6.25 queue Message-ID: <20071213221805.GA27960@Krystal> References: <20071213144642.GA7800@Krystal> <20071213133202.11374f54.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <20071213133202.11374f54.akpm@linux-foundation.org> X-Editor: vi X-Info: http://krystal.dyndns.org:8080 X-Operating-System: Linux/2.6.21.3-grsec (i686) X-Uptime: 17:11:56 up 40 days, 3:17, 4 users, load average: 0.85, 1.63, 1.29 User-Agent: Mutt/1.5.16 (2007-06-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Andrew Morton (akpm@linux-foundation.org) wrote: > On Thu, 13 Dec 2007 09:46:42 -0500 > Mathieu Desnoyers wrote: > > > Hi Andrew, > > > > I would like to post my next patches in a way that would make it as > > easy for you and the community to review them. Currently, the patches > > that have really settled down are : > > > > * For 2.6.25 > > > > - Text Edit Lock > > - Looks-good-to Ingo Molnar. > > - Immediate Values > > - Redux version, asked by Rusty > > > > * For 2.6.25 ? > > > > Another patchset that is technically ok (however Rusty dislikes the > > complexity inherent to the algorithms required to be reentrant wrt NMI > > and MCE, although it's been reviewed by the community for months). I > > have also replyed to Ingo's concerns about effeciency of my approach > > compared to dtrace by providing numbers, but he has not replyed yet. > > http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg238317.html > > > > - Markers use Immediate Values > > > > * Maybe for 2.6.26 ... > > > > Once we have this, and the instrumentation (submitted as RFC in the past > > weeks), in the kernel, the only architecture dependent element that will > > be left is the LTTng timestamping code. > > > > And then, from that point, the following patchset is mostly > > self-contained and stops modifying code all over the kernel tree. It > > is the LTTng tracer. > > > > Trying to improve my approach : I guess that submitting at most 15 > > patches at a time (each 1-2 days), against the -mmotm tree, would be the > > way to do it ? > > > > Just for some context, I have... > > - 1,400-odd open bugzilla reports > > - 719 emails saved away in my emailed-bug-reports folder, all of which > need to be gone through, asking originators to retest and > re-report-if-unfixed. > > - A big ugly email titled "2.6.24-rc5-git1: Reported regressions from > 2.6.23" in my inbox. > > All of which makes it a bit inappropriate to be thinking about > intrusive-looking new features. > > Ho hum. Just send me the whole lot against rc5-mm1 and I'll stick it in > there and we'll see what breaks. > Ok, Hum, the "whole lot" : including or excluding - instrumentation - the LTTng tracer ? I realise that you have a lot of other things on your mind. One of my goals would be to get LTTng in the -mm tree so it could help you resolve these bugs. But on the other hand, I don't want to rush things. The LTTng tracer could benefit of another round of RFC before it is ready for prime time, but it would definitely be useful as-is in the mm tree. Mathieu -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68