From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx3.mail.elte.hu (mx3.mail.elte.hu [157.181.1.138]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 571D2B6F70 for ; Thu, 21 Jul 2011 02:42:56 +1000 (EST) Date: Wed, 20 Jul 2011 18:42:02 +0200 From: Ingo Molnar To: Linus Torvalds 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 In-Reply-To: Cc: Peter Zijlstra , mahesh@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, Anton Blanchard , linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , * 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