From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758254AbZBFLgq (ORCPT ); Fri, 6 Feb 2009 06:36:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756702AbZBFLgH (ORCPT ); Fri, 6 Feb 2009 06:36:07 -0500 Received: from tomts36.bellnexxia.net ([209.226.175.93]:53064 "EHLO tomts36-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756085AbZBFLgE (ORCPT ); Fri, 6 Feb 2009 06:36:04 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AsIEAPmui0lMQWt2/2dsb2JhbACBbs0rhBYG Date: Fri, 6 Feb 2009 06:36:00 -0500 From: Mathieu Desnoyers To: Bert Wesarg Cc: "Paul E. McKenney" , ltt-dev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC git tree] Userspace RCU (urcu) for Linux Message-ID: <20090206113600.GA21377@Krystal> References: <20090206030543.GB8560@Krystal> <36ca99e90902060055g67e53ae5k938a4e94c4637885@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <36ca99e90902060055g67e53ae5k938a4e94c4637885@mail.gmail.com> X-Editor: vi X-Info: http://krystal.dyndns.org:8080 X-Operating-System: Linux/2.6.21.3-grsec (i686) X-Uptime: 06:35:49 up 36 days, 11:33, 3 users, load average: 0.47, 0.39, 0.35 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 * Bert Wesarg (bert.wesarg@googlemail.com) wrote: > On Fri, Feb 6, 2009 at 04:05, Mathieu Desnoyers > wrote: > > Hi Paul, > > > > I figured out I needed some userspace RCU for the userspace tracing part > > of LTTng (for quick read access to the control variables) to trace > > userspace pthread applications. So I've done a quick-and-dirty userspace > > RCU implementation. > > > > It works so far, but I have not gone through any formal verification > > phase. It seems to work on paper, and the tests are also OK (so far), > > but I offer no guarantee for this 300-lines-ish 1-day hack. :-) If you > > want to comment on it, it would be welcome. It's a userland-only > > library. It's also currently x86-only, but only a few basic definitions > > must be adapted in urcu.h to port it. > > > > Here is the link to my git tree : > > > > git://lttng.org/userspace-rcu.git > > > > http://lttng.org/cgi-bin/gitweb.cgi?p=userspace-rcu.git;a=summary > > > Really interesting, thanks. > > But you should use pthread_equal() for you equality test of pthread_t. > It's merged, thanks ! Mathieu > Regards, > Bert > > > Thanks, > > > > Mathieu > -- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68