Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759368Ab2HJPCJ (ORCPT ); Fri, 10 Aug 2012 11:02:09 -0400 Received: from relay4-d.mail.gandi.net ([217.70.183.196]:41474 "EHLO relay4-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758269Ab2HJPCG (ORCPT ); Fri, 10 Aug 2012 11:02:06 -0400 X-Originating-IP: 217.70.178.142 X-Originating-IP: 50.43.46.74 Date: Fri, 10 Aug 2012 08:01:57 -0700 From: Josh Triplett To: Serge Hallyn Cc: Alex Kelly , Alexander Viro , Heiko Carstens , "Eric W. Biederman" , "Paul E. McKenney" , Andrew Morton , Ingo Molnar , Kees Cook , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCHv4 2/3] fs: Make core dump functionality optional Message-ID: <20120810150157.GA23457@leaf> References: <1344587169-18682-1-git-send-email-alex.page.kelly@gmail.com> <1344587169-18682-2-git-send-email-alex.page.kelly@gmail.com> <20120810132323.GA21048@sergelap> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120810132323.GA21048@sergelap> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1104 Lines: 22 On Fri, Aug 10, 2012 at 08:23:23AM -0500, Serge Hallyn wrote: > Quoting Alex Kelly (alex.page.kelly@gmail.com): > > Adds an expert Kconfig option, CONFIG_COREDUMP, which allows disabling of core dump. > > This saves approximately 2.6k in the compiled kernel, and complements CONFIG_ELF_CORE, > > which now depends on it. > > Is there another reason than the 2.6k to do this? My kernels range > between 4.8 and 5M, so that's .05% size savings? A kitchen-sink kernel might take up that much space, but you can build a minimal embedded kernel that only takes up ~200k, at which point 2.6k represents a >1% decrease. Add a few more changes like this, and those decreases start to add up. At this point, no one thing you can chop out of the kernel will give you a 100k decrease by itself; you need a pile of changes like this one to do that. - Josh Triplett -- 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/