Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764122AbXILUUe (ORCPT ); Wed, 12 Sep 2007 16:20:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763372AbXILUUG (ORCPT ); Wed, 12 Sep 2007 16:20:06 -0400 Received: from py-out-1112.google.com ([64.233.166.180]:10588 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763301AbXILUUE convert rfc822-to-8bit (ORCPT ); Wed, 12 Sep 2007 16:20:04 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=beta; h=received:from:to:subject:date:user-agent:cc:references:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:message-id; b=H/dP21toIcr33x73TrAHS+GJ+dQMcrP0suoHODuP0Hbz1mCUD2XAlK6QJ75ZGtrlGt3q/f+iGQgvvKeCYwAFH9L4xPKWs+wST36lUsCLX5PabJHJ42XdannYhDzYxal1+Q08w/ZTFm8sJkm9C0AIIg/YSMaY+B21vp0grgAVOAw= From: Denys Vlasenko To: Andi Kleen Subject: Re: [PATCH 0/4] build system: section garbage collection for vmlinux Date: Wed, 12 Sep 2007 21:19:57 +0100 User-Agent: KMail/1.9.1 Cc: Sam Ravnborg , linux-kernel@vger.kernel.org References: <200709112105.34301.vda.linux@googlemail.com> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200709122119.57661.vda.linux@googlemail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 894 Lines: 21 On Tuesday 11 September 2007 22:03, Andi Kleen wrote: > Denys Vlasenko writes: > > > > ? ?text ? ?data ? ? bss ? ? dec ? ? hex filename > > 5159478 1005139 ?406784 6571401 ?644589 linux-2.6.23-rc4.org/vmlinux > > 5131822 ?996090 ?401439 6529351 ?63a147 linux-2.6.23-rc4.gc/vmlinux > > > > In this particular case, 402 objects were discarded, saving 42 kb. > > I wonder how many of those are 100% unused on all configurations? > That could be an useful janitor task to clean up With CONFIG_DISCARD_UNUSED_SECTIONS=y ld will helpfully flood you with the list of discarded stuff. I pass --print-gc-sections to it. -- vda - 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/