From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755792Ab1HWWiZ (ORCPT ); Tue, 23 Aug 2011 18:38:25 -0400 Received: from shards.monkeyblade.net ([198.137.202.13]:52983 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753108Ab1HWWiU (ORCPT ); Tue, 23 Aug 2011 18:38:20 -0400 Date: Tue, 23 Aug 2011 15:36:22 -0700 (PDT) Message-Id: <20110823.153622.1166242430280142268.davem@davemloft.net> To: heiko.carstens@de.ibm.com Cc: tglx@linutronix.de, mingo@elte.hu, linux-kernel@vger.kernel.org Subject: Re: [PATCH] nohz: remove "Switched to NOHz mode" debugging messages From: David Miller In-Reply-To: <20110823112046.GB2540@osiris.boeblingen.de.ibm.com> References: <20110823112046.GB2540@osiris.boeblingen.de.ibm.com> X-Mailer: Mew version 6.3 on Emacs 23.2 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (shards.monkeyblade.net [198.137.202.13]); Tue, 23 Aug 2011 15:37:04 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Heiko Carstens Date: Tue, 23 Aug 2011 13:20:46 +0200 > From: Heiko Carstens > > When performing cpu hotplug tests the kernel printk log buffer gets flooded > with pointless "Switched to NOHz mode..." messages. Especially when afterwards > analyzing a dump this might have removed more interesting stuff out of the > buffer. > Assuming that switching to NOHz mode simply works just remove the printk. > > Signed-off-by: Heiko Carstens These drive me nuts during bootup on my 128+ cpu machines :-/ Thanks for taking care of this. Acked-by: David S. Miller