Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756727AbXKPIUW (ORCPT ); Fri, 16 Nov 2007 03:20:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751933AbXKPIUH (ORCPT ); Fri, 16 Nov 2007 03:20:07 -0500 Received: from antispam.upcomillas.es ([130.206.70.245]:53245 "EHLO antispam.upcomillas.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752094AbXKPIUF (ORCPT ); Fri, 16 Nov 2007 03:20:05 -0500 Subject: Re: [BUG] New Kernel Bugs From: Romano Giannetti To: Daniel Barkalow Cc: Theodore Tso , Benoit Boissinot , Mark Lord , Ingo Molnar , Andrew Morton , David Miller , protasnb@gmail.com, linux-kernel@vger.kernel.org In-Reply-To: References: <20071113031553.3c7b5c16.akpm@linux-foundation.org> <20071113.033946.114918709.davem@davemloft.net> <20071113034916.2556edd7.akpm@linux-foundation.org> <20071113.035824.40509981.davem@davemloft.net> <20071113041259.79c9a8c5.akpm@linux-foundation.org> <20071113134029.GA30978@elte.hu> <4739AFE0.20705@rtr.ca> <40f323d00711130752k19cab8eauc3456721274b3267@mail.gmail.com> <20071113171356.GA25824@thunk.org> <20071115153057.GE17180@thunk.org> Content-Type: text/plain; charset=ISO-8859-15 Date: Fri, 16 Nov 2007 09:20:02 +0100 Message-Id: <1195201202.13688.10.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2623 Lines: 47 (Cc: trimmed a bit). On Thu, 2007-11-15 at 11:19 -0500, Daniel Barkalow wrote: > On Thu, 15 Nov 2007, Theodore Tso wrote: [...] > > A full kernel build with everything selected can take good 30 minutes or > > more, and that's on a fast dual-core machine with 4gigs of memory and > > 7200rpm disk drives. On a slower, memory limited laptop, doing a single > > kernel build can take more time than the user has patiences; multiply > > that by 7 or 8 build and test boots, and it starts to get tiresome. > > None of this is going to take as long, Well, the compile phase can. Especially if the first time you try to compile the kernel with EXTRAVERSION=`git describe` which force almost a full rebuild every time... But the worst problem is that a full recompile, with a distro .config, will take hours on my 2.66GHz/CoreDuo/1G ram. Trimming down .config is fundamental to be able to bisect effectively, but it's not an easy thing to do for an unexperienced user (and a painful one for all the rest of us). What would be an invaluable help would be a tool that generates a .config with all the modules and subsystems I am using *now*. Should be possible in principle by parsing KConfig and Makefiles and using as input the current .config and lsmod... is it possible to map the kernel object name to the option enabling it? Romano -- Sorry for the disclaimer --- ?I cannot stop it! -- La presente comunicaci?n tiene car?cter confidencial y es para el exclusivo uso del destinatario indicado en la misma. Si Ud. no es el destinatario indicado, le informamos que cualquier forma de distribuci?n, reproducci?n o uso de esta comunicaci?n y/o de la informaci?n contenida en la misma est?n estrictamente prohibidos por la ley. Si Ud. ha recibido esta comunicaci?n por error, por favor, notif?quelo inmediatamente al remitente contestando a este mensaje y proceda a continuaci?n a destruirlo. Gracias por su colaboraci?n. This communication contains confidential information. It is for the exclusive use of the intended addressee. If you are not the intended addressee, please note that any form of distribution, copying or use of this communication or the information in it is strictly prohibited by law. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy this message. Thank you for your cooperation. - 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/