Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268251AbUJFGEn (ORCPT ); Wed, 6 Oct 2004 02:04:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268265AbUJFGEn (ORCPT ); Wed, 6 Oct 2004 02:04:43 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:18591 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S268251AbUJFGEm (ORCPT ); Wed, 6 Oct 2004 02:04:42 -0400 Message-ID: <41638AEB.5080703@pobox.com> Date: Wed, 06 Oct 2004 02:04:27 -0400 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040922 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Andrew Morton CC: andrea@novell.com, nickpiggin@yahoo.com.au, rml@novell.com, roland@topspin.com, linux-kernel@vger.kernel.org Subject: Re: Preempt? (was Re: Cannot enable DMA on SATA drive (SCSI-libsata, VIA SATA)) References: <52is9or78f.fsf_-_@topspin.com> <4163465F.6070309@pobox.com> <41634A34.20500@yahoo.com.au> <41634CF3.5040807@pobox.com> <1097027575.5062.100.camel@localhost> <20041006015515.GA28536@havoc.gtf.org> <41635248.5090903@yahoo.com.au> <20041006020734.GA29383@havoc.gtf.org> <20041006031726.GK26820@dualathlon.random> <4163660A.4010804@pobox.com> <20041006040323.GL26820@dualathlon.random> <41636FCF.3060600@pobox.com> <20041005214605.5ec397ab.akpm@osdl.org> In-Reply-To: <20041005214605.5ec397ab.akpm@osdl.org> 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 Content-Length: 668 Lines: 20 Andrew Morton wrote: > Jeff Garzik wrote: > >>Preempt will always be something I ask people to turn off when reporting >> driver bugs; it just adds too much complicated mess for zero gain. > > > What driver bugs are apparent with preemption which are not already SMP bugs? If your implied answer is true, then we wouldn't need preempt_{en,dis}able() sprinkled throughout the code so much. Jeff - 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/