Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965460AbWI0JNs (ORCPT ); Wed, 27 Sep 2006 05:13:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965461AbWI0JNs (ORCPT ); Wed, 27 Sep 2006 05:13:48 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:7071 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S965460AbWI0JNr (ORCPT ); Wed, 27 Sep 2006 05:13:47 -0400 Date: Wed, 27 Sep 2006 11:05:24 +0200 From: Ingo Molnar To: Bill Huey Cc: "Eric W. Biederman" , 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: <20060927090524.GA20395@elte.hu> References: <20060920141907.GA30765@elte.hu> <20060921065624.GA9841@gnuppy.monkey.org> <20060927050856.GA16140@gnuppy.monkey.org> <20060927063415.GB16140@gnuppy.monkey.org> <20060927090939.GA17136@gnuppy.monkey.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060927090939.GA17136@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: 0.4999] -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: 762 Lines: 20 * Bill Huey wrote: > > more than just changing locking behavior. Which is what brought me > > into this conversation in the first place. So removing that point > > of discord would be good. > > Yes, there are few places. It was primarily to handle the reaping > during the finishing parts of a fork. All in all, it's not at all a > critical path. no. It was primarily to move the put_task_struct() off the context-switch fastpath. (In comparison the fork use is much rarer) 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/