Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756501AbXHUKUs (ORCPT ); Tue, 21 Aug 2007 06:20:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753784AbXHUKUl (ORCPT ); Tue, 21 Aug 2007 06:20:41 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:52131 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753534AbXHUKUk (ORCPT ); Tue, 21 Aug 2007 06:20:40 -0400 Date: Tue, 21 Aug 2007 12:20:23 +0200 From: Ingo Molnar To: Andi Kleen Cc: Martin Schwidefsky , Christian Borntraeger , Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org, Jan Glauber , heiko.carstens@de.ibm.com, Paul Mackerras Subject: Re: [accounting regression since rc1] scheduler updates Message-ID: <20070821102023.GA24111@elte.hu> References: <20070812163225.GA11996@elte.hu> <200708141037.48001.borntraeger@de.ibm.com> <20070820154529.GA300@elte.hu> <1187629438.8541.40.camel@localhost> <20070820180810.GA25160@elte.hu> <20070821070922.GA16695@elte.hu> <20070821100717.GA692@one.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070821100717.GA692@one.firstfloor.org> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: 0.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=0.5 required=5.9 tests=BAYES_40 autolearn=no SpamAssassin version=3.0.3 0.5 BAYES_40 BODY: Bayesian spam probability is 20 to 40% [score: 0.2358] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1030 Lines: 27 * Andi Kleen wrote: > On Tue, Aug 21, 2007 at 09:09:22AM +0200, Ingo Molnar wrote: > > > > * Andi Kleen wrote: > > > > > You should just be using idle notifiers instead instead of adding > > > more and more custom hooks (like NOHZ has already) x86-64 still > > > has them and there is a old patch around to add them to i386. > > > > these are specially placed callbacks that we want to call from > > certain ACPI codepaths but not from all of them. > > Because you believe TSC only stops in C2 and C3? That's not correct on > all systems. i know there are some incredibly broken (but rare) boxes where the bios will report it only knows C1 and do C2? Is that the case you are referring to, or is there something else too? 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/