From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 5 Jun 2001 02:59:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 5 Jun 2001 02:58:45 -0400 Received: from router-100M.swansea.linux.org.uk ([194.168.151.17]:17936 "EHLO the-village.bc.nu") by vger.kernel.org with ESMTP id ; Tue, 5 Jun 2001 02:58:41 -0400 Subject: Re: [PATCH] fs/devfs/base.c To: hpa@zytor.com (H. Peter Anvin) Date: Tue, 5 Jun 2001 07:56:37 +0100 (BST) Cc: linux-kernel@vger.kernel.org In-Reply-To: <9fht4j$cce$1@cesium.transmeta.com> from "H. Peter Anvin" at Jun 04, 2001 11:10:27 PM X-Mailer: ELM [version 2.5 PL3] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: Alan Cox Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > It's trivial to calculate for DAGs -- directed acyclic graphs. It's > when the "acyclic" constraint is violated that you have problems! It may well be that interrupt stacks are a win anyway. If we can get the kernel struct out of the stack pages (which would fix some very unpleasant cache colour problems) and take the non irq stack down to 4K then irq stacks would pay off once you had 25 or so processes on a system