From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759758AbYDTSvj (ORCPT ); Sun, 20 Apr 2008 14:51:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754919AbYDTSvc (ORCPT ); Sun, 20 Apr 2008 14:51:32 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:33797 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752129AbYDTSvb (ORCPT ); Sun, 20 Apr 2008 14:51:31 -0400 Date: Sun, 20 Apr 2008 11:50:53 -0700 From: Arjan van de Ven To: Andi Kleen Cc: =?UTF-8?B?SsO2cm4=?= Engel , Willy Tarreau , Mark Lord , Adrian Bunk , Alan Cox , Shawn Bohrer , Ingo Molnar , Andrew Morton , Linux Kernel Mailing List , Thomas Gleixner Subject: Re: x86: 4kstacks default Message-ID: <20080420115053.7151ef8d@laptopd505.fenrus.org> In-Reply-To: <480B8932.1090308@firstfloor.org> References: <20080420085104.GG1595@cs181133002.pp.htv.fi> <20080420103611.2c0d3519@the-village.bc.nu> <20080420104444.GI1595@cs181133002.pp.htv.fi> <87y778aezh.fsf@basil.nowhere.org> <20080420124717.GH8474@1wt.eu> <480B44C4.4060104@rtr.ca> <20080420133857.GB26536@1wt.eu> <480B50F1.8040309@firstfloor.org> <20080420164133.GB20694@logfs.org> <480B7B1E.7010707@firstfloor.org> <20080420174249.GC20694@logfs.org> <480B8932.1090308@firstfloor.org> Organization: Intel X-Mailer: Claws Mail 3.2.0 (GTK+ 2.12.5; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 20 Apr 2008 20:19:30 +0200 Andi Kleen wrote: > In theory if you e.g. convert a recursive algorithm > to iterative you might save some cache foot print, but I don't > think that really happens in kernel code. > this is what Al did for the symlink recursion thing, and Jens did for the block layer... so yes this conversion does happen for real. -- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org