Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757070Ab1DHOIu (ORCPT ); Fri, 8 Apr 2011 10:08:50 -0400 Received: from casper.infradead.org ([85.118.1.10]:44556 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757012Ab1DHOIs convert rfc822-to-8bit (ORCPT ); Fri, 8 Apr 2011 10:08:48 -0400 Subject: Re: [RFC] tracing: Adding cgroup aware tracing functionality From: Peter Zijlstra To: Frederic Weisbecker Cc: Steven Rostedt , David Sharp , Vaibhav Nagarnaik , Paul Menage , Li Zefan , Stephane Eranian , Andrew Morton , Michael Rubin , Ken Chen , linux-kernel@vger.kernel.org, containers@lists.linux-foundation.org, Thomas Gleixner , Ingo Molnar , Arnaldo Carvalho de Melo In-Reply-To: <20110408134537.GA1967@nowhere> References: <20110407013349.GH1867@nowhere> <20110407120608.GB1798@nowhere> <20110407213208.GE1798@nowhere> <20110408002812.GG1798@nowhere> <1302248268.21026.18.camel@frodo> <20110408134537.GA1967@nowhere> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Fri, 08 Apr 2011 16:07:52 +0200 Message-ID: <1302271672.9086.155.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 806 Lines: 20 On Fri, 2011-04-08 at 15:45 +0200, Frederic Weisbecker wrote: > > I bet this idea is not controversial. What has yet to be solved is > the debate on the writers that can run in overwriting mode at the same > time we have readers. Which comes along debates on using subbuffers, > etc.. > > But I guess we can solve that along the way? Dunno, but the much larger point is how ftrace is going to want to do multiple sessions and keep session context etc (what events to where). I've only heard some vague hand waving there but never heard anything concrete. -- 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/