From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264531AbUHTIRe (ORCPT ); Fri, 20 Aug 2004 04:17:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267698AbUHTIRe (ORCPT ); Fri, 20 Aug 2004 04:17:34 -0400 Received: from mx1.elte.hu ([157.181.1.137]:2273 "EHLO mx1.elte.hu") by vger.kernel.org with ESMTP id S264531AbUHTINi (ORCPT ); Fri, 20 Aug 2004 04:13:38 -0400 Date: Fri, 20 Aug 2004 10:14:58 +0200 From: Ingo Molnar To: Rusty Russell Cc: Andrew Morton , Nathan Lynch , lkml - Kernel Mailing List , Srivatsa Vaddagiri Subject: Re: 2.6.8.1-mm2 Message-ID: <20040820081458.GA4949@elte.hu> References: <20040819014204.2d412e9b.akpm@osdl.org> <1092964083.4946.7.camel@biclops.private.network> <20040819181603.700a9a0e.akpm@osdl.org> <1092987650.28849.349.camel@bach> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1092987650.28849.349.camel@bach> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Rusty Russell wrote: > + /* Delayed cleanup on death of task with uncaring parent. */ > + struct list_head death; > +/* Keventd handles tasks whose parent won't ever release_task them. */ > +static DEFINE_PER_CPU(struct list_head, unreleased_tasks); > +static DEFINE_PER_CPU(struct work_struct, release_task_work); no! this removes the whole performance optimization of self-reaping and re-introduces the context-switches. Just measure the creation/destruction performance of threads. Strong NACK. Ingo