Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752272Ab1FGIn5 (ORCPT ); Tue, 7 Jun 2011 04:43:57 -0400 Received: from slow3-v.mail.gandi.net ([217.70.178.89]:37378 "EHLO slow3-v.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751368Ab1FGIny (ORCPT ); Tue, 7 Jun 2011 04:43:54 -0400 X-WhiteListed: mail was accepted with no delay X-WhiteListed: mail was accepted with no delay X-WhiteListed: mail was accepted with no delay X-WhiteListed: mail was accepted with no delay X-Originating-IP: 50.43.15.19 Date: Tue, 7 Jun 2011 01:43:49 -0700 From: Josh Triplett To: Denys Vlasenko Cc: linux-kernel@vger.kernel.org Subject: Re: Status of function-sections work? Message-ID: <20110607084349.GC4599@leaf> References: <20110606011531.GA1887@leaf> <201106071011.15114.vda.linux@googlemail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201106071011.15114.vda.linux@googlemail.com> 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: 1473 Lines: 32 On Tue, Jun 07, 2011 at 10:11:15AM +0200, Denys Vlasenko wrote: > On Monday 06 June 2011 03:15, Josh Triplett wrote: > > Hello, > > > > I found your work in 2010 on using function-sections and data-sections > > to eliminate unused code in the kernel. I'd like to make use of this > > work to try to build an extremely space-constrained kernel. > > > > It looks like a few of your patches made it into the kernel, but most of > > the linker script changes don't seem to have made it in. I wanted to > > find out the status of this work. Do you still have this working? Do > > you have versions of your patches for current Linux? > > parisc uses ^ in some identifiers. Therefore we need something like > [A-Za-z0-9_$^]* in linker script. This wasn't working with GNU ld - > ^ is not a valid char for pattern. Use of more general [!.]* > was also impossible - ! is not a valid char too. > > Therefore I asked binutils people to fix this (they agreed) and > decided to wait for a fixed binutils to be released. Makes sense. Thanks for the explanation and status. Do you know if the fix has gone into binutils, either in a release or the latest snapshot from version control? If not, does a patch exist? - 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/