From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263243AbVGOIpA (ORCPT ); Fri, 15 Jul 2005 04:45:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263246AbVGOIpA (ORCPT ); Fri, 15 Jul 2005 04:45:00 -0400 Received: from caramon.arm.linux.org.uk ([212.18.232.186]:2831 "EHLO caramon.arm.linux.org.uk") by vger.kernel.org with ESMTP id S263243AbVGOIo7 (ORCPT ); Fri, 15 Jul 2005 04:44:59 -0400 Date: Fri, 15 Jul 2005 09:44:45 +0100 From: Russell King To: Linus Torvalds Cc: Lee Revell , Jesper Juhl , Chris Wedgwood , Andrew Morton , "Brown, Len" , dtor_core@ameritech.net, vojtech@suse.cz, david.lang@digitalinsight.com, davidsen@tmr.com, kernel@kolivas.org, linux-kernel@vger.kernel.org, mbligh@mbligh.org, diegocg@gmail.com, azarah@nosferatu.za.org, christoph@lameter.com Subject: Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt Message-ID: <20050715094445.D25428@flint.arm.linux.org.uk> Mail-Followup-To: Linus Torvalds , Lee Revell , Jesper Juhl , Chris Wedgwood , Andrew Morton , "Brown, Len" , dtor_core@ameritech.net, vojtech@suse.cz, david.lang@digitalinsight.com, davidsen@tmr.com, kernel@kolivas.org, linux-kernel@vger.kernel.org, mbligh@mbligh.org, diegocg@gmail.com, azarah@nosferatu.za.org, christoph@lameter.com References: <20050713184227.GB2072@ucw.cz> <1121282025.4435.70.camel@mindpipe> <1121286258.4435.98.camel@mindpipe> <20050713134857.354e697c.akpm@osdl.org> <20050713211650.GA12127@taniwha.stupidest.org> <9a874849050714170465c979c3@mail.gmail.com> <1121386505.4535.98.camel@mindpipe> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: ; from torvalds@osdl.org on Thu, Jul 14, 2005 at 05:24:39PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 14, 2005 at 05:24:39PM -0700, Linus Torvalds wrote: > HOWEVER. I bet that somebody who really really cares (hint hint) could > easily make HZ be 1000, and then dynamically tweak the divisor at bootup > to be either 1000, 250, or 100, and then increment "jiffies" by 1, 4 or > 10. Wouldn't this be better suited to a VST like implementation, but instead of using VST to dynamically adjust the timer divisor, it operates in a "fixed" mode? (I'm arguing this way because ARM has VST merged already, and all there are no changes required to the core kernel code to achieve this.) -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core