Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760697AbXHOPTt (ORCPT ); Wed, 15 Aug 2007 11:19:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761099AbXHOPTj (ORCPT ); Wed, 15 Aug 2007 11:19:39 -0400 Received: from mx1.redhat.com ([66.187.233.31]:40863 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760186AbXHOPTi (ORCPT ); Wed, 15 Aug 2007 11:19:38 -0400 Date: Wed, 15 Aug 2007 11:19:33 -0400 From: Dave Jones To: Dave Young Cc: Randy Dunlap , Dave Jones , LKML Subject: Re: two questions about the boot_delay Message-ID: <20070815151933.GA13881@redhat.com> Mail-Followup-To: Dave Jones , Dave Young , Randy Dunlap , Dave Jones , LKML References: <20070811163331.b8ff4a6b.rdunlap@xenotime.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.14 (2007-02-12) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1158 Lines: 32 On Wed, Aug 15, 2007 at 03:45:08PM +0800, Dave Young wrote: > >On 8/12/07, Randy Dunlap wrote: > > On Wed, 8 Aug 2007 07:39:33 +0000 Dave Young wrote: > > > > > Hi, > > > I have tried the "slow down printk" , and I have two questions. > > > > > > 1. why it depends the DEBUG_KERNEL? Sometimes we only need boot_delay > > > to see the printk infomations. How about set it as a standalone > > > config option? > > > > Is depending on DEBUG_KERNEL a problem? If so, why? > > IMHO, the DEBUG_KERNEL will build a big kernel and the building time > is long, so if the we only want to look at the boot messages at panic > point, the DEBUG_KERNEL is not needed. Only if you enable other debug options too. (Yes, some default to on, perhaps they shouldn't). DEBUG_KERNEL itself shouldn't make any difference to the generated code at all. Dave -- http://www.codemonkey.org.uk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/