Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757609Ab1EZQ24 (ORCPT ); Thu, 26 May 2011 12:28:56 -0400 Received: from casper.infradead.org ([85.118.1.10]:35724 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757552Ab1EZQ2z (ORCPT ); Thu, 26 May 2011 12:28:55 -0400 Subject: Re: [BUG] "sched: Remove rq->lock from the first half of ttwu()" locks up on ARM From: Peter Zijlstra To: Marc Zyngier Cc: Oleg Nesterov , Yong Zhang , Ingo Molnar , Frank Rowand , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org In-Reply-To: <1306426823.27474.241.camel@e102391-lin.cambridge.arm.com> References: <1306260792.27474.133.camel@e102391-lin.cambridge.arm.com> <1306272750.2497.79.camel@laptop> <1306343335.21578.65.camel@twins> <1306358128.21578.107.camel@twins> <1306405979.1200.63.camel@twins> <1306407759.27474.207.camel@e102391-lin.cambridge.arm.com> <1306409575.1200.71.camel@twins> <1306412511.1200.90.camel@twins> <20110526154508.GA13788@redhat.com> <1306425584.2497.81.camel@laptop> <1306426148.2497.83.camel@laptop> <1306426823.27474.241.camel@e102391-lin.cambridge.arm.com> Content-Type: text/plain; charset="UTF-8" Date: Thu, 26 May 2011 18:32:17 +0200 Message-ID: <1306427537.2497.86.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 701 Lines: 17 On Thu, 2011-05-26 at 17:20 +0100, Marc Zyngier wrote: > > Doesn't look very good here. The serial console basically locks up as > soon as the system gets busy, even if the kernel compilation seem to > progress at a decent pace. OK, I'll leave the one that worked queued up for this release. If we can come up with a better alternative we can try for the next release, that should give us ample time to test things and get us a working kernel now ;-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/