From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755359AbZHRDbC (ORCPT ); Mon, 17 Aug 2009 23:31:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751793AbZHRDbB (ORCPT ); Mon, 17 Aug 2009 23:31:01 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:52475 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751424AbZHRDbA (ORCPT ); Mon, 17 Aug 2009 23:31:00 -0400 Date: Mon, 17 Aug 2009 20:30:47 -0700 From: Andrew Morton To: Dave Young Cc: Ingo Molnar , Linux Kernel Mailing List Subject: Re: -mm hang while shutdown with printk_delay Message-Id: <20090817203047.6cff48fb.akpm@linux-foundation.org> In-Reply-To: References: X-Mailer: Sylpheed 2.4.8 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 18 Aug 2009 11:25:22 +0800 Dave Young wrote: > Hi, > > Test with printk_delay=200, > > /sbin/halt -p > > kernel hang after following message: > > Disabling non-boot CPUs > > There's no such problem with 2.6.31-rc6 umm, OK. But -mm contains six patches: printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec.patch printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec-fix.patch printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec-fix-2.patch printk-add-printk_delay-to-make-messages-readable-for-some-scenarios.patch printk-add-printk_delay-to-make-messages-readable-for-some-scenarios-fix.patch printk-add-printk_delay-to-make-messages-readable-for-some-scenarios-cleanup.patch from yourself. Are they the cause?