From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760558AbZEGQ4h (ORCPT ); Thu, 7 May 2009 12:56:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760396AbZEGQ4Y (ORCPT ); Thu, 7 May 2009 12:56:24 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:35403 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755690AbZEGQ4X (ORCPT ); Thu, 7 May 2009 12:56:23 -0400 Message-ID: <4A031269.3000603@garzik.org> Date: Thu, 07 May 2009 12:55:05 -0400 From: Jeff Garzik User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: "H. Peter Anvin" CC: Alan Cox , Christoph Lameter , Alok Kataria , Ingo Molnar , Thomas Gleixner , the arch/x86 maintainers , LKML Subject: Re: [PATCH] x86: Reduce the default HZ value References: <1241462661.412.8.camel@alok-dev1> <4A00ADDE.9000908@zytor.com> <1241560625.8665.17.camel@alok-dev1> <20090507161440.5b9c067d@lxorguk.ukuu.org.uk> <4A02FE91.8070006@zytor.com> In-Reply-To: <4A02FE91.8070006@zytor.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.4 (----) X-Spam-Report: SpamAssassin version 3.2.5 on srv5.dvmed.net summary: Content analysis details: (-4.4 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org H. Peter Anvin wrote: > Alan Cox wrote: >> Hooray - finally someone admits the *real* problem here, and for power >> management too. Otherwise known as "referencing jiffies as a variable must >> die" > > Amen. Also, "using HZ as a unit of measurement must die, too." Love to -- now, what will it be replaced with? grep for 'deadline' in drivers/ata/libata* to find an example not so easily converted away from jiffies. Jeff