From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966002AbXCPXcO (ORCPT ); Fri, 16 Mar 2007 19:32:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S966004AbXCPXcO (ORCPT ); Fri, 16 Mar 2007 19:32:14 -0400 Received: from www.osadl.org ([213.239.205.134]:37400 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S966002AbXCPXcL (ORCPT ); Fri, 16 Mar 2007 19:32:11 -0400 Subject: Re: [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far From: Thomas Gleixner Reply-To: tglx@linutronix.de To: Maxim Levitsky Cc: linux-kernel@vger.kernel.org In-Reply-To: <200703161230.03712.maximlevitsky@gmail.com> References: <200703161230.03712.maximlevitsky@gmail.com> Content-Type: text/plain Date: Sat, 17 Mar 2007 00:39:01 +0100 Message-Id: <1174088342.13341.340.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2007-03-16 at 12:30 +0200, Maxim Levitsky wrote: > Mar 14 00:22:23 MAIN kernel: [ 2.072875] caller is check_tsc_sync_source+0x1d/0x100 > Mar 14 00:22:23 MAIN kernel: [ 2.072878] [show_trace_log_lvl+26/48] show_trace_log_lvl+0x1a/0x30 > Mar 14 00:22:23 MAIN kernel: [ 2.072931] checking TSC synchronization [CPU#0 -> CPU#1]: > Mar 14 00:22:23 MAIN kernel: [ 2.092922] Measured 72051818872 cycles TSC warp between CPUs, turning off > > It looks clear that preempt is enabled all the way in second cpu initialization, ( I think that at least in check_tsc_sync_source, it should be disabled, > shouldn't it ? ) This should be fixed by commit d04f41e35343f1d788551fd3f753f51794f4afcf tglx