From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261319AbVG1Hm3 (ORCPT ); Thu, 28 Jul 2005 03:42:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261323AbVG1HmV (ORCPT ); Thu, 28 Jul 2005 03:42:21 -0400 Received: from mx2.elte.hu ([157.181.151.9]:53184 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S261319AbVG1Hl4 (ORCPT ); Thu, 28 Jul 2005 03:41:56 -0400 Date: Thu, 28 Jul 2005 09:41:18 +0200 From: Ingo Molnar To: David.Mosberger@acm.org Cc: Andrew Morton , "Chen, Kenneth W" , linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org Subject: Re: Add prefetch switch stack hook in scheduler function Message-ID: <20050728074118.GA20581@elte.hu> References: <200507272207.j6RM7fg18695@unix-os.sc.intel.com> <20050727161316.0593d762.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i 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 * david mosberger wrote: > Also, should this be called prefetch_stack() or perhaps even just > prefetch_task()? Not every architecture defines a switch_stack > structure. yeah. I'd too suggest to call it prefetch_stack(), and not make it a macro & hook but something defined on all arches, with for now only ia64 having any real code in the inline function. i'm wondering, is the switch_stack at the same/similar place as next->thread_info? If yes then we could simply do a prefetch(next->thread_info). Ingo