From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755196AbYECXEV (ORCPT ); Sat, 3 May 2008 19:04:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752996AbYECXEK (ORCPT ); Sat, 3 May 2008 19:04:10 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:57740 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752597AbYECXEJ (ORCPT ); Sat, 3 May 2008 19:04:09 -0400 Date: Sat, 03 May 2008 16:04:08 -0700 (PDT) Message-Id: <20080503.160408.238581868.davem@davemloft.net> To: mingo@elte.hu Cc: benh@kernel.crashing.org, 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: <20080503223844.GA18344@elte.hu> References: <20080503.122734.01023096.davem@davemloft.net> <1209853855.26383.28.camel@pasglop> <20080503223844.GA18344@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: Sun, 4 May 2008 00:38:44 +0200 > the same bug existed on x86 too: that too does a few IPIs without > irq_enter/irq_exit. We now removed the softlockup dependency so it > should not be required to do an irq_enter()/exit anymore - unless the > code that the IPI uses accesses jiffies. (but that would be unusual) That move doesn't solve the problem, I'm strongly certain arch's still need to add the irq_{enter,exit}(). I'll revert the irq_{enter,exit}() changes on one of my sparc64 boxes to validate this later today.