From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264693AbUESXpw (ORCPT ); Wed, 19 May 2004 19:45:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264697AbUESXpw (ORCPT ); Wed, 19 May 2004 19:45:52 -0400 Received: from mail8.fw-bc.sony.com ([160.33.98.75]:60125 "EHLO mail8.fw-bc.sony.com") by vger.kernel.org with ESMTP id S264693AbUESXpu (ORCPT ); Wed, 19 May 2004 19:45:50 -0400 Message-ID: <40ABF1C0.1010804@am.sony.com> Date: Wed, 19 May 2004 16:46:08 -0700 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: Russell King CC: Christoph Hellwig , Mark Gross , linux kernel Subject: Re: ANNOUNCE: CE Linux Forum - Specification V1.0 draft References: <40A90D00.7000005@am.sony.com> <20040517201910.A1932@infradead.org> <200405171342.49891.mgross@linux.intel.com> <20040518074854.A7348@infradead.org> <40ABB5E2.3040908@am.sony.com> <20040519225729.A28893@flint.arm.linux.org.uk> In-Reply-To: <20040519225729.A28893@flint.arm.linux.org.uk> 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 Russell King wrote: > On Wed, May 19, 2004 at 12:30:42PM -0700, Tim Bird wrote: > >>The non-normative section of this spec. explains where this was >>a problem in 2.4, and why it is desirable, from the standpoint of >>bootup time reduction, to avoid these busywaits. > > In this case, it's really a bug that IDE is using a busy wait where it > should be using a sleeping wait. It's a bug, plain and simple. To > wrap the bug into "a spec" somehow seems wrong to me, especially when > it would be far better to report the problem as a bug. Sometimes it's difficult to discern what the intention or correctness of a piece of code is, when you have limited experience with the code. I know, we could have just asked... > > Sure, specs make suit-wearing people happy, but that doesn't mean that > they're appropriate as a bug reporting method. 8) Agreed. :-) We should probably mutate this into a more general statement that says "busywaits are not appreciated as a delay mechanism by drivers on bootup." ============================= Tim Bird Architecture Group Co-Chair CE Linux Forum Senior Staff Engineer Sony Electronics E-mail: Tim.Bird@am.sony.com =============================