Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758823AbXJDMaZ (ORCPT ); Thu, 4 Oct 2007 08:30:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756054AbXJDMaR (ORCPT ); Thu, 4 Oct 2007 08:30:17 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:34153 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753029AbXJDMaQ (ORCPT ); Thu, 4 Oct 2007 08:30:16 -0400 Subject: Re: [13/18] x86_64: Allow fallback for the stack From: Peter Zijlstra To: Andi Kleen Cc: Christoph Lameter , akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, travis@sgi.com In-Reply-To: <200710041425.43343.ak@suse.de> References: <20071004035935.042951211@sgi.com> <200710041356.51750.ak@suse.de> <1191499692.22357.4.camel@twins> <200710041425.43343.ak@suse.de> Content-Type: text/plain Date: Thu, 04 Oct 2007 14:30:09 +0200 Message-Id: <1191501009.22357.7.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 761 Lines: 25 On Thu, 2007-10-04 at 14:25 +0200, Andi Kleen wrote: > > The order-1 allocation failures where GFP_ATOMIC, because SLUB uses !0 > > order for everything. > > slub is wrong then. Can it be fixed? I think mainline slub doesn't do this, just -mm. See DEFAULT_MAX_ORDER in mm/slub.c > > Kernel stack allocation is GFP_KERNEL I presume. > > Of course. > > > Also, I use 4k stacks on all my machines. > > You don't have any x86-64 machines? Ah, my bad, yes I do, but I (wrongly) thought they had that option too. - 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/