From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965146AbVKBRoS (ORCPT ); Wed, 2 Nov 2005 12:44:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965147AbVKBRoS (ORCPT ); Wed, 2 Nov 2005 12:44:18 -0500 Received: from neo.relay-host.net ([216.177.17.40]:17819 "HELO neo.relay-host.net") by vger.kernel.org with SMTP id S965146AbVKBRoR (ORCPT ); Wed, 2 Nov 2005 12:44:17 -0500 Date: 2 Nov 2005 17:50:22 -0000 Message-ID: <20051102175022.13637.qmail@neo.relay-host.net> From: listmonkey@neo.relay-host.net To: linux-kernel@vger.kernel.org Subject: SMP CPU affinity questions Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi- I am trying to use a quad Opteron motherboard with SMP Kernel 2.6.5 for a quasi-real-time task. I need to assign all processes to specific CPUs, including interrupt handlers. I have had success using sched_setaffinity() to set the CPU for processes I create, but I am unable, as root, to force system processes to move to another CPU. Any ideas? I can find no documentation about how to force an interrupt handler to a specific CPU - is this possible without modifying the kernel? --Pete