From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754846Ab0J0Pdk (ORCPT ); Wed, 27 Oct 2010 11:33:40 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:46952 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751183Ab0J0Pdi (ORCPT ); Wed, 27 Oct 2010 11:33:38 -0400 Date: Wed, 27 Oct 2010 17:33:31 +0200 From: Ingo Molnar To: Linus Torvalds Cc: Brian Gerst , tj@kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86-32: Allocate irq stacks seperate from percpu area Message-ID: <20101027153331.GA21789@elte.hu> References: <1288158182-1753-1-git-send-email-brgerst@gmail.com> <20101027153053.GA20243@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101027153053.GA20243@elte.hu> User-Agent: Mutt/1.5.20 (2009-08-17) 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=3.2.5 -2.0 BAYES_00 BODY: Bayesian 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 * Ingo Molnar wrote: > > Ingo, can you take care of this all, or should I just take the patch and remove > > the multipage stuff manually? > > Sure, i'm queuing up Brian's patch (initially wanted to wait for the NUMA-aware > version) and will remove all the multipage pcpu bits - will send you a pull > request later today, after a bit of testing. Btw., the NUMA stuff never really worked percpu alloc, as per Eric's observation: | Anyway, I just discovered per_cpu data on my machine (NUMA capable) all sit on a | single node, if 32bit kernel used. ... and in practice it's not really relevant on 32-bit anyway. So we can decouple the two issues just fine. Thanks, Ingo