From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261187AbUBZUyT (ORCPT ); Thu, 26 Feb 2004 15:54:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261250AbUBZUyT (ORCPT ); Thu, 26 Feb 2004 15:54:19 -0500 Received: from mail1.fw-sj.sony.com ([160.33.82.68]:31422 "EHLO mail1.fw-sj.sony.com") by vger.kernel.org with ESMTP id S261187AbUBZUyS (ORCPT ); Thu, 26 Feb 2004 15:54:18 -0500 Message-ID: <403E5EF7.7080309@am.sony.com> Date: Thu, 26 Feb 2004 13:02:47 -0800 From: Tim Bird User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: root@chaos.analogic.com CC: linux kernel Subject: Re: Why no interrupt priorities? References: <403E4363.2070908@am.sony.com> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Richard B. Johnson wrote: > On Thu, 26 Feb 2004, Tim Bird wrote: > >>What's the rationale for not supporting interrupt priorities >>in the kernel? > > Interrupt priorities are supported and have been supported > since the first cascaded interrupt controllers and, now > with the APIC. Please forgive my ignorance. I'm not sure what's going on with 2.6 and work queues, but do the hardware priorities allow you to control scheduling of interrupt bottom halves? ============================= Tim Bird Architecture Group Co-Chair CE Linux Forum Senior Staff Engineer Sony Electronics E-mail: Tim.Bird@am.sony.com =============================