Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750755AbWIUHCl (ORCPT ); Thu, 21 Sep 2006 03:02:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750753AbWIUHCl (ORCPT ); Thu, 21 Sep 2006 03:02:41 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:26605 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1750755AbWIUHCl (ORCPT ); Thu, 21 Sep 2006 03:02:41 -0400 Date: Thu, 21 Sep 2006 08:54:02 +0200 From: Ingo Molnar To: Bill Huey Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , John Stultz , "Paul E. McKenney" , Dipankar Sarma , Arjan van de Ven Subject: Re: [PATCH] move put_task_struct() reaping into a thread [Re: 2.6.18-rt1] Message-ID: <20060921065402.GA22089@elte.hu> References: <20060920141907.GA30765@elte.hu> <20060921065624.GA9841@gnuppy.monkey.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060921065624.GA9841@gnuppy.monkey.org> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: -2.9 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.9 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_50 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts 0.5 BAYES_50 BODY: Bayesian spam probability is 40 to 60% [score: 0.4945] -0.1 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1098 Lines: 28 * Bill Huey wrote: > On Wed, Sep 20, 2006 at 04:19:07PM +0200, Ingo Molnar wrote: > > I'm pleased to announce the 2.6.18-rt1 tree, which can be downloaded > > from the usual place: > ... > > as usual, bugreports, fixes and suggestions are welcome, > > Speaking of which... > > This patch moves put_task_struct() reaping into a thread instead of an > RCU callback function [...] had some time to think about it since yesterday: RCU reaping is done in softirqs (check out the softirq-rcu threads on your -rt box), that's why i removed the delayed-task-drop code to begin with. Now i dont doubt that you saw crashes under 2.6.17 - but did you manage to figure out what the reason is for those crashes, and do those reasons really necessiate the pushing of task-reapdown into yet another set of kernel threads? Ingo - 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/