From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753677AbYI3HLd (ORCPT ); Tue, 30 Sep 2008 03:11:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752787AbYI3HLU (ORCPT ); Tue, 30 Sep 2008 03:11:20 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:60742 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751821AbYI3HLT (ORCPT ); Tue, 30 Sep 2008 03:11:19 -0400 Date: Tue, 30 Sep 2008 09:10:47 +0200 From: Ingo Molnar To: Mathieu Desnoyers Cc: "Frank Ch. Eigler" , Lai Jiangshan , linux-kernel@vger.kernel.org Subject: Re: [PATCH] Tracepoints fix reentrancy Message-ID: <20080930071047.GD30927@elte.hu> References: <20080930055112.GC16961@Krystal> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080930055112.GC16961@Krystal> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0002] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Mathieu Desnoyers wrote: > The tracepoints had the same problem markers did have wrt reentrancy. Apply a > similar fix using a rcu_barrier after each tracepoint mutex lock. > > Signed-off-by: Mathieu Desnoyers > CC: Ingo Molnar > CC: "Frank Ch. Eigler" > CC: Lai Jiangshan applied to tip/tracing/ftrace, thanks Mathieu! Ingo