From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753876AbYACNHj (ORCPT ); Thu, 3 Jan 2008 08:07:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752666AbYACNGq (ORCPT ); Thu, 3 Jan 2008 08:06:46 -0500 Received: from mx2.suse.de ([195.135.220.15]:55682 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751211AbYACNG2 (ORCPT ); Thu, 3 Jan 2008 08:06:28 -0500 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: Ingo Molnar Subject: Re: [PATCH] [12/20] x86: Use a per cpu timer for correctable machine check checking Date: Thu, 3 Jan 2008 13:56:09 +0100 User-Agent: KMail/1.9.6 Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , "H. Peter Anvin" References: <20080103149.088038000@suse.de> <20080103005007.CE13A14D40@wotan.suse.de> <20080103104956.GE29194@elte.hu> In-Reply-To: <20080103104956.GE29194@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801031356.09714.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 03 January 2008 11:49:56 Ingo Molnar wrote: > > * Andi Kleen wrote: > > > Previously the code used a single timer that then used > > smp_call_function to interrupt all CPUs while the original CPU was > > waiting for them. > > > > But it is better / more real time and more power friendly to simply > > run individual timers on each CPU so they all do this independently. > > > > This way no single CPU has to wait for all others. > > i think we should unify this code first and provide it on 32-bit as > well. That's done in another patch that hasn't been posted yet. -Andi