Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751035AbWIUIEs (ORCPT ); Thu, 21 Sep 2006 04:04:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751036AbWIUIEs (ORCPT ); Thu, 21 Sep 2006 04:04:48 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:16324 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1751035AbWIUIEo (ORCPT ); Thu, 21 Sep 2006 04:04:44 -0400 Date: Thu, 21 Sep 2006 09:56:33 +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 , Esben Nielsen Subject: Re: [PATCH] move put_task_struct() reaping into a thread [Re: 2.6.18-rt1] Message-ID: <20060921075633.GA30343@elte.hu> References: <20060920141907.GA30765@elte.hu> <20060921065624.GA9841@gnuppy.monkey.org> <20060921065402.GA22089@elte.hu> <20060921071838.GA10337@gnuppy.monkey.org> <20060921071624.GA25281@elte.hu> <20060921073222.GC10337@gnuppy.monkey.org> <20060921072908.GA27280@elte.hu> <20060921074805.GA11644@gnuppy.monkey.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060921074805.GA11644@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: 0.4979] -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: 647 Lines: 17 * Bill Huey wrote: > [...] If the upstream kernel used RCU function in a task allocation or > task struct reading in the first place then call_rcu() would be a > clear choice. However, I didn't see it used in that way (I could be > wrong) [...] it was RCU-ified briefly but then it was further improved to direct freeing, because upstream _can_ free it directly. 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/