From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762766AbYGKN7X (ORCPT ); Fri, 11 Jul 2008 09:59:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761054AbYGKN5t (ORCPT ); Fri, 11 Jul 2008 09:57:49 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:35419 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760290AbYGKN5s (ORCPT ); Fri, 11 Jul 2008 09:57:48 -0400 Date: Fri, 11 Jul 2008 15:56:30 +0200 From: Ingo Molnar To: Steven Rostedt Cc: Peter Zijlstra , Thomas Gleixner , Andrew Morton , john stultz , linux-kernel@vger.kernel.org, Dmitry Adamushko Subject: Re: [PATCH 0/3] [PATCH] more sched_clock updates Message-ID: <20080711135630.GD32159@elte.hu> References: <20080709041530.668120406@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080709041530.668120406@goodmis.org> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Steven Rostedt wrote: > ftrace is still seeing jumps in the sched_clock.c code that is not > seen in using sched_clock() function itself. The following patches fix > some of the issues that I've seen. There is still a slight drift but > all my attempts to remove it completely have failed. Patch 3 does the > best sofar at keeping the jumps to a minimum. cool stuff! I've created a new -tip topic branch for your sched-clock fixes and enhancements, under tip/sched/clock, and have picked up your patches: Steven Rostedt (7): sched_clock: record from last tick sched_clock: widen the max and min time sched_clock: stop maximum check on NO HZ sched_clock: fix calculation of other CPU sched_clock: only update deltas with local reads. sched_clock: record TSC after gtod sched_clock: and multiplier for TSC to gtod drift thanks, Ingo