From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: [patch 3/3] clockevents: Fix resume logic - updated version Date: Sun, 13 May 2007 15:35:55 -0700 Message-ID: <20070513153555.7f7dc350.akpm@linux-foundation.org> References: <20070512030754.90488f79.akpm@linux-foundation.org> <1178970253.22481.143.camel@localhost.localdomain> <20070512095145.0cf58a57.akpm@linux-foundation.org> <1178989302.22481.185.camel@localhost.localdomain> <20070512102350.04126320.akpm@linux-foundation.org> <1178999770.22481.211.camel@localhost.localdomain> <20070512181140.50140334.akpm@linux-foundation.org> <1179043652.22481.243.camel@localhost.localdomain> <1179074887.22481.271.camel@localhost.localdomain> <20070513120937.024a4368.akpm@linux-foundation.org> <20070513200739.GA4137@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from smtp1.linux-foundation.org ([65.172.181.25]:36451 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753537AbXEMWga (ORCPT ); Sun, 13 May 2007 18:36:30 -0400 In-Reply-To: <20070513200739.GA4137@elte.hu> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Ingo Molnar Cc: tglx@linutronix.de, "Rafael J. Wysocki" , LKML , John Stultz , linux-acpi@vger.kernel.org On Sun, 13 May 2007 22:07:39 +0200 Ingo Molnar wrote: > > * Andrew Morton wrote: > > > Yeah, I expect quite a few people will start seeing that. iirc it was > > triggered by a couple of changes: a local_irq_save/local_irq_restore > > in sched_clock() and a change Jeremy made to the softlockup detector. > > hm, i specifically asked to not do local_irq_save/restore in > sched_clock(). It's the _scheduler_ clock and it very absolutely > positively needs no flags save/restore. > It got taken out again. It doesn't matter though: a local_irq_save/restore in some callee shouldn't cause the locking API tests to break. And they're apparently now breaking without that local_irq_save/restore in there anyway.