From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754518AbYECT1r (ORCPT ); Sat, 3 May 2008 15:27:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752679AbYECT1g (ORCPT ); Sat, 3 May 2008 15:27:36 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:60138 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752635AbYECT1e (ORCPT ); Sat, 3 May 2008 15:27:34 -0400 Date: Sat, 03 May 2008 12:27:34 -0700 (PDT) Message-Id: <20080503.122734.01023096.davem@davemloft.net> To: mingo@elte.hu Cc: a.p.zijlstra@chello.nl, efault@gmx.de, elendil@planet.nl, parag.warudkar@gmail.com, linux-kernel@vger.kernel.org, guichaz@yahoo.fr, andi@firstfloor.org Subject: Re: 'global' rq->clock From: David Miller In-Reply-To: <20080503101016.GA18801@elte.hu> References: <20080503082849.GA29605@elte.hu> <20080503.020502.226847930.davem@davemloft.net> <20080503101016.GA18801@elte.hu> X-Mailer: Mew version 5.2 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ingo Molnar Date: Sat, 3 May 2008 12:10:16 +0200 > ( although please note that the growing generalization that goes on > _did_ find a subtle nohz problem on sparc64 early in the merge window, > so it's not like these changes are totally useless to you. ) Note that this bug theoretically exists on every platform, even x86, and only sparc64 is fixed at the moment by adding the irq_{entry,exit}() guards around all of it's IPI handlers. Just a reminder.