Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932381AbVK2Ufs (ORCPT ); Tue, 29 Nov 2005 15:35:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932384AbVK2Ufs (ORCPT ); Tue, 29 Nov 2005 15:35:48 -0500 Received: from mustang.oldcity.dca.net ([216.158.38.3]:14751 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S932381AbVK2Ufr (ORCPT ); Tue, 29 Nov 2005 15:35:47 -0500 Subject: Re: [RFC][PATCH] Runtime switching of the idle function [take 2] From: Lee Revell To: Andi Kleen Cc: "Brown, Len" , Nick Piggin , Ingo Molnar , Steven Rostedt , Andrew Morton , acpi-devel@lists.sourceforge.net, nando@ccrma.Stanford.EDU, linux-kernel@vger.kernel.org, paulmck@us.ibm.com, kr@cybsft.com, tglx@linutronix.de, pluto@agmk.net, john.cooper@timesys.com, bene@linutronix.de, dwalker@mvista.com, trini@kernel.crashing.org, george@mvista.com In-Reply-To: <20051129195336.GP19515@wotan.suse.de> References: <20051129195336.GP19515@wotan.suse.de> Content-Type: text/plain Date: Tue, 29 Nov 2005 15:35:39 -0500 Message-Id: <1133296540.4627.7.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.4.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 742 Lines: 18 On Tue, 2005-11-29 at 20:53 +0100, Andi Kleen wrote: > We're mostly addressing it - there are problems left, but > overall it's looking good. The remaining problem is > an education issue of users to not use RDTSC directly, > but use gettimeofday/clock_gettime No the issue is to make gettimeofday fast enough that the people who currently have to use the TSC can use it. Right now it's 1500-3000 nsec or so, Vojtech mentioned that he has a patch that could reduce that to 150-300 nsec. Lee - 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/