Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964928AbVKAAeI (ORCPT ); Mon, 31 Oct 2005 19:34:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964930AbVKAAeI (ORCPT ); Mon, 31 Oct 2005 19:34:08 -0500 Received: from smtp.osdl.org ([65.172.181.4]:48008 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S964928AbVKAAeH (ORCPT ); Mon, 31 Oct 2005 19:34:07 -0500 Date: Mon, 31 Oct 2005 16:34:08 -0800 From: Andrew Morton To: Linus Torvalds Cc: zippel@linux-m68k.org, ak@suse.de, rmk+lkml@arm.linux.org.uk, tony.luck@gmail.com, paolo.ciarrocchi@gmail.com, linux-kernel@vger.kernel.org Subject: Re: New (now current development process) Message-Id: <20051031163408.41a266f3.akpm@osdl.org> In-Reply-To: References: <4d8e3fd30510291026x611aa715pc1a153e706e70bc2@mail.gmail.com> <20051031001647.GK2846@flint.arm.linux.org.uk> <20051030172247.743d77fa.akpm@osdl.org> <200510310341.02897.ak@suse.de> <20051031160557.7540cd6a.akpm@osdl.org> X-Mailer: Sylpheed version 1.0.0 (GTK+ 1.2.10; i386-vine-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1738 Lines: 60 Linus Torvalds wrote: > > > > On Mon, 31 Oct 2005, Andrew Morton wrote: > > > > Are you sure these kernels are feature-equivalent? > > They may not be feature-equivalent in reality, but it's hard to generate > something that has the features (or lack there-of) of old kernels these > days. Which is problematic. Probably. > But some of it is likely also compilers. gcc does insane padding in many > cases these days. 2.6.14 `make allnoconfig': gcc-2.95.4: bix:/usr/src/25> size vmlinux text data bss dec hex filename 665502 152379 55120 873001 d5229 vmlinux gcc version 4.1.0 20050513 (experimental): bix:/usr/src/25> size vmlinux text data bss dec hex filename 761415 151851 55280 968546 ec762 vmlinux (There's a new reason for retaining gcc-2.95.x support) (gcc-4.x can probably be tuned up with appropriate `-malign' options) > And a lot of it is us just being bloated. Argh. 2.5.71, gcc-2.95.4: bix:/usr/src/aa/linux-2.5.71> size vmlinux text data bss dec hex filename 501892 54163 40420 596475 919fb vmlinux yes, it got bigger. .data went through the roof - maybe inlined debug stuff? 2.6.8.1, gcc-2.95.4: bix:/usr/src/aa/linux-2.6.8.1> size vmlinux text data bss dec hex filename 605032 153817 58176 817025 c7781 vmlinux It happened somewhere between 2.5.71 and 2.6.8. 2.4.x doesn't have allnoconfig, so no numbers for that. - 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/