From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753537AbXITXG4 (ORCPT ); Thu, 20 Sep 2007 19:06:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751766AbXITXGt (ORCPT ); Thu, 20 Sep 2007 19:06:49 -0400 Received: from neon.samage.net ([85.17.153.66]:56561 "EHLO neon.samage.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751575AbXITXGt (ORCPT ); Thu, 20 Sep 2007 19:06:49 -0400 Message-ID: <38197.81.207.0.53.1190329581.squirrel@secure.samage.net> In-Reply-To: <200709201818.42125.rob@landley.net> References: <46F1645D.9050406@am.sony.com> <200709201538.43093.rob@landley.net> <59465.81.207.0.53.1190323573.squirrel@secure.samage.net> <200709201818.42125.rob@landley.net> Date: Fri, 21 Sep 2007 01:06:21 +0200 (CEST) Subject: Re: [Announce] Linux-tiny project revival From: "Indan Zupancic" To: "Rob Landley" , "Sam Ravnborg" Cc: linux-tiny@selenic.com, "Michael Opdenacker" , "CE Linux Developers List" , "linux kernel" User-Agent: SquirrelMail/1.4.8 MIME-Version: 1.0 Content-Type: text/plain;charset=UTF-8 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-Spam-Score: -1.8 X-Scan-Signature: 938925967a2432a0d8c7279c30be63be Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, September 21, 2007 01:18, Rob Landley wrote: > On Thursday 20 September 2007 4:26:13 pm Indan Zupancic wrote: >> A quick scroll through a vmlinux binary shows that there are quite a >> lot areas consisting only of some repeated pattern. Mostly 0x00, but >> also 0x90 and ".GCC: (GNU) 4.2.1.". Getting rid of those would save >> something between 50 and 100KB. > > Worse, if you feed an absolute path to O= when you build the kernel out of > tree, then it uses absolute paths for all the __FILE__ strings and that makes > kernel BIIIIIG. (Did that by accident a while back.) Too bad there's no way > to keep the __FILE__ strings compressed at runtime and gunzip them as needed > like busybox does with help messages... :) I suspect that can be fixed by changing the built system. How can using O= change the source file path anyway? That seems unnecessary. It seems to be worse, full pathnames are also used when giving a relative path. (I'm using O=../obj/). On the other hand, it doesn't seem to cause that much bloat here: $ strings vmlinux | grep /home/ |wc 119 181 6400 CC'ing Sam Ravnborg, perhaps he has some ideas. Greetings, Indan