From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756738AbZJFJO2 (ORCPT ); Tue, 6 Oct 2009 05:14:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756719AbZJFJO2 (ORCPT ); Tue, 6 Oct 2009 05:14:28 -0400 Received: from www.tglx.de ([62.245.132.106]:58100 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756718AbZJFJO1 (ORCPT ); Tue, 6 Oct 2009 05:14:27 -0400 Date: Tue, 6 Oct 2009 11:13:43 +0200 (CEST) From: Thomas Gleixner To: "Mehlan, Markus" cc: linux-kernel@vger.kernel.org Subject: Re: AW: clock_nanosleep: cyclic POSIX thread freezes during time setting In-Reply-To: <40F775BBD072A346957E787B3D0DBE5F1C97B4@w2k3-46ex01.RITTER.LOCAL> Message-ID: References: <40F775BBD072A346957E787B3D0DBE5F1C97AF@w2k3-46ex01.RITTER.LOCAL> <40F775BBD072A346957E787B3D0DBE5F1C97B4@w2k3-46ex01.RITTER.LOCAL> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 6 Oct 2009, Mehlan, Markus wrote: > > Just tested on a MPC5200 board with cyclictest and setting > > date on a second console. Unfortunately I cannot reproduce > > that problem. Can you try to activate the function tracer and > > capture what the system is doing. That might us give some > > clue about the problem. > > > do you mean kernel function trace (KFT patch) with function trace > or user space "strace"? The kernel function tracer which is in -rt. strace is not telling us what's happening in the kernel. Thanks, tglx