Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751815AbWLNIW3 (ORCPT ); Thu, 14 Dec 2006 03:22:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751814AbWLNIW3 (ORCPT ); Thu, 14 Dec 2006 03:22:29 -0500 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:55207 "EHLO ebiederm.dsl.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751815AbWLNIW1 (ORCPT ); Thu, 14 Dec 2006 03:22:27 -0500 From: ebiederm@xmission.com (Eric W. Biederman) To: Arjan van de Ven Cc: Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: [patch] Add allowed_affinity to the irq_desc to make it possible to have restricted irqs References: <1166018020.27217.805.camel@laptopd505.fenrus.org> <20061213194332.GA29185@elte.hu> <45806137.4020403@linux.intel.com> <45810383.2060708@linux.intel.com> Date: Thu, 14 Dec 2006 01:22:08 -0700 In-Reply-To: <45810383.2060708@linux.intel.com> (Arjan van de Ven's message of "Thu, 14 Dec 2006 08:55:47 +0100") Message-ID: User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 822 Lines: 26 Arjan van de Ven writes: > Eric W. Biederman wrote: >> What is the problem you are trying to solve? > > 2 problems > 1) irq's that irqbalance should not touch at all This is easy we just need a single bit. Not 128+ bytes on the huge machines. > 2) irqs that can only go to a subset of processors. > > 1) is very real today > 2) is partially real on some of the bigger numa stuff already. You have said you the NUMA cases is handled in another way already? In which case irqs that can only got to a subset of processors shouldn't be a problem. Eric - 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/