From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751819Ab1GTQnN (ORCPT ); Wed, 20 Jul 2011 12:43:13 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:44794 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751368Ab1GTQnM (ORCPT ); Wed, 20 Jul 2011 12:43:12 -0400 Date: Wed, 20 Jul 2011 18:42:02 +0200 From: Ingo Molnar To: Linus Torvalds Cc: Peter Zijlstra , Anton Blanchard , mahesh@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, benh@kernel.crashing.org Subject: Re: [regression] 3.0-rc boot failure -- bisected to cd4ea6ae3982 Message-ID: <20110720164202.GA24244@elte.hu> References: <20110715104547.29c3c509@kryten> <1311024956.2309.22.camel@laptop> <20110719144451.79bc69ab@kryten> <1311070894.13765.180.camel@twins> <20110720201436.19e9689a@kryten> <1311158708.5345.12.camel@twins> <20110720221420.153b0830@kryten> <1311173910.5345.94.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Linus Torvalds wrote: > On Wed, Jul 20, 2011 at 7:58 AM, Peter Zijlstra wrote: > > > > Right, so we can either merge my scary patches now and have 3.0 > > boot on 16+ node machines (and risk breaking something), or delay > > them until 3.0.1 and have 16+ node machines suffer a little. > > So how much impact does your scary patch have on machines that > don't have multiple nodes? If it's a "the code isn't even called by > normal machines" kind of setup, I don't think I care a lot. NUMA systems will trigger the new code - not just 'weird NUMA systems' - but i still think we could try the patches, the code looks straightforward and i booted them on NUMA systems and it all seems fine so far. Anyway, i'll push the new sched/urgent branch out in a few minutes and then you'll see the full patches in the commit notifications. Thanks, Ingo