Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266186AbUJOBOQ (ORCPT ); Thu, 14 Oct 2004 21:14:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267818AbUJOBOQ (ORCPT ); Thu, 14 Oct 2004 21:14:16 -0400 Received: from opersys.com ([64.40.108.71]:8207 "EHLO www.opersys.com") by vger.kernel.org with ESMTP id S266186AbUJOBOP (ORCPT ); Thu, 14 Oct 2004 21:14:15 -0400 Message-ID: <416F2643.9000001@opersys.com> Date: Thu, 14 Oct 2004 21:22:11 -0400 From: Karim Yaghmour Reply-To: karim@opersys.com Organization: Opersys inc. User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 X-Accept-Language: en-us, en, fr, fr-be, fr-ca, fr-fr MIME-Version: 1.0 To: Roland Dreier CC: Ingo Molnar , linux-kernel@vger.kernel.org, Thomas Zanussi , Robert Wisniewski , Richard J Moore , Michel Dagenais Subject: Re: [patch] Real-Time Preemption, -VP-2.6.9-rc4-mm1-U0 References: <20041011215909.GA20686@elte.hu> <20041012091501.GA18562@elte.hu> <20041012123318.GA2102@elte.hu> <20041012195424.GA3961@elte.hu> <20041013061518.GA1083@elte.hu> <20041014002433.GA19399@elte.hu> <416F0071.3040304@opersys.com> <20041014234603.GA22964@elte.hu> <416F14B4.8070002@opersys.com> <52u0swddpk.fsf@topspin.com> In-Reply-To: <52u0swddpk.fsf@topspin.com> 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: 731 Lines: 20 Roland Dreier wrote: > Not sure if I really understand the context where Ingo would use this, > but this lockless scheme doesn't seem to be safe for realtime; the > retry can potentially happen an arbitrary number of times. In theory. In practice it doesn't often happen twice and very rarely more than that. Karim -- Author, Speaker, Developer, Consultant Pushing Embedded and Real-Time Linux Systems Beyond the Limits http://www.opersys.com || karim@opersys.com || 1-866-677-4546 - 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/