From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753404AbYADNUr (ORCPT ); Fri, 4 Jan 2008 08:20:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751750AbYADNUk (ORCPT ); Fri, 4 Jan 2008 08:20:40 -0500 Received: from cantor2.suse.de ([195.135.220.15]:56622 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751522AbYADNUj (ORCPT ); Fri, 4 Jan 2008 08:20:39 -0500 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: Ingo Molnar Subject: Re: [PATCH x86] [1/16] Make clocksource watchdog cycle through online CPUs Date: Fri, 4 Jan 2008 13:59:56 +0100 User-Agent: KMail/1.9.6 Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org References: <20080103442.621670000@suse.de> <20080103154214.B618F14DDB@wotan.suse.de> <20080104085124.GA28740@elte.hu> In-Reply-To: <20080104085124.GA28740@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801041359.56968.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday 04 January 2008 09:51:24 Ingo Molnar wrote: > > * Andi Kleen wrote: > > > This way it checks if the clocks are synchronized between CPUs too. > > This might be able to detect slowly drifting TSCs which only go wrong > > over longer time. > > ok, makes sense - applied. Have you seen this trigger in practice? No, obviously because there are no per CPU timers currently. -Andi