Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754394AbXLHPGs (ORCPT ); Sat, 8 Dec 2007 10:06:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751744AbXLHPGj (ORCPT ); Sat, 8 Dec 2007 10:06:39 -0500 Received: from rtr.ca ([76.10.145.34]:4103 "EHLO mail.rtr.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751629AbXLHPGj (ORCPT ); Sat, 8 Dec 2007 10:06:39 -0500 Message-ID: <475AB2FD.30600@rtr.ca> Date: Sat, 08 Dec 2007 10:06:37 -0500 From: Mark Lord User-Agent: Thunderbird 2.0.0.9 (X11/20071031) MIME-Version: 1.0 To: Ingo Molnar Cc: Guillaume Chazarain , stefano.brivio@polimi.it, Nick Piggin , Robert Love , linux-kernel@vger.kernel.org, Dave Jones , "Rafael J. Wysocki" , Michael Buesch , Thomas Gleixner , Andrew Morton , Len Brown Subject: Re: [PATCH] scheduler: fix x86 regression in native_sched_clock References: <20071207021952.6f0ac922@morte> <20071207084559.GA11162@elte.hu> <200712072213.06530.nickpiggin@yahoo.com.au> <20071207122310.maqkoxlb4gsg4ggc@webmail.polimi.it> <20071207122516.GA25115@elte.hu> <20071207123509.GA28676@elte.hu> <20071207124034.GA30052@elte.hu> <20071207145418.GA22277@elte.hu> <20071207174649.39c9198d@inria.fr> <20071207175754.GB19173@elte.hu> In-Reply-To: <20071207175754.GB19173@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 954 Lines: 25 Ingo Molnar wrote: >... > thanks. I do get the impression that most of this can/should wait until > 2.6.25. The patches look quite dangerous. .. I confess to not really trying hard to understand everything in this thread, but the implication seems to be that this bug might affect udelay() and possibly jiffies ? If so, then fixing it has to be a *must* for 2.6.24, as otherwise we'll get all sorts of one-in-while odd driver bugs.. like maybe these two for starters: [Bug 9492] 2.6.24: false double-clicks from USB mouse [Bug 9489] 20000+ wake-ups/second in 2.6.24 Neither of which happens often enough to explain or debug, but either of which *could* be caused by some weird jiffies thing maybe. ??? -- 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/