From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937082AbXGQXbW (ORCPT ); Tue, 17 Jul 2007 19:31:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757890AbXGQXbO (ORCPT ); Tue, 17 Jul 2007 19:31:14 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:39946 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757402AbXGQXbN (ORCPT ); Tue, 17 Jul 2007 19:31:13 -0400 Subject: Re: [PATCH][RFC] 4K stacks default, not a debug thing any more...? From: Arjan van de Ven To: Bodo Eggert <7eggert@gmx.de> Cc: Rene Herman , Ray Lee , Matt Mackall , Jeremy Fitzhardinge , Jesper Juhl , Linux Kernel Mailing List , William Lee Irwin III , David Chinner In-Reply-To: References: <8FO1e-2jW-35@gated-at.bofh.it> <8Ghmx-60z-17@gated-at.bofh.it> <8Gj55-hJ-5@gated-at.bofh.it> <8GkNo-2Vb-1@gated-at.bofh.it> <8GtnN-7TG-23@gated-at.bofh.it> <8GVjY-PL-25@gated-at.bofh.it> <469A5D7C.5010904@gmail.com> <469BF104.1040703@gmail.com> <2c0942db0707161537o2852a308s26e79235e897e282@mail.gmail.com> <469BF768.6040200@gmail.com> <469C0D32.2090102@gmail.com> <469CD456.801@gmail.com> Content-Type: text/plain Organization: Intel International BV Date: Tue, 17 Jul 2007 16:29:59 -0700 Message-Id: <1184714999.2691.0.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.10.3 (2.10.3-1.fc7) 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 X-Mailing-List: linux-kernel@vger.kernel.org > 1) It all can be reduced to 4K + 4K by asuming all IRQ happen on one CPU. no it's separate stacks for soft and hard irqs, so it's really 4+4+4 another angle is that while correctness rules, userspace correctness rules as well. If you can't fork enough threads for what you need the machine for, why have the machine in the first place? -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org