Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756223AbZAGNrp (ORCPT ); Wed, 7 Jan 2009 08:47:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752223AbZAGNrh (ORCPT ); Wed, 7 Jan 2009 08:47:37 -0500 Received: from vpn.id2.novell.com ([195.33.99.129]:32805 "EHLO vpn.id2.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750796AbZAGNrg convert rfc822-to-8bit (ORCPT ); Wed, 7 Jan 2009 08:47:36 -0500 Message-Id: <4964C0A3.76E4.0078.0@novell.com> X-Mailer: Novell GroupWise Internet Agent 8.0.0 Date: Wed, 07 Jan 2009 13:48:03 +0000 From: "Jan Beulich" To: "Sam Ravnborg" Cc: , "Theodore Tso" , Subject: Re: [REGRESSION] Recent change to kernel spikes out ccache/distcc References: <496386EF.76E4.0078.0@novell.com> <20090106173300.GA10903@mit.edu> <49647B00.76E4.0078.0@novell.com> <20090107113138.GA29730@uranus.ravnborg.org> <4964AF8D.76E4.0078.0@novell.com> <20090107132337.GA2289@uranus.ravnborg.org> In-Reply-To: <20090107132337.GA2289@uranus.ravnborg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1287 Lines: 33 >>> Sam Ravnborg 07.01.09 14:23 >>> >On Wed, Jan 07, 2009 at 12:35:09PM +0000, Jan Beulich wrote: >> >>> Sam Ravnborg 07.01.09 12:31 >>> >> >What is the gain/pain ratio here? >> >> Certainly depends on the pov - it reduces the kernel module (disk) image >> sizes quite a bit, so from a distro perspective its a move against the ever >> growing package sizes (and the disk space) hundreds or even thousands >> of modules require. > >The kernel modules seldom export anything so the benefit is minimal here. Not really, for highly modular distro kernels. >I did a 15 minutes hack to try ripping the .c -> .s -> .o stuff out. Looks good to me. In case you decide to revert the stuff for .29, I'll merge this into my patch. >Jan - I need some hard numbers to convince me that stripping the >__crc symbols is worth it. The on-disk size of the modules in my builds is reduced by about 5% with this patch (but I can't immediately tell how much of this is due to __crc_* vs. other symbol stripping). Jan -- 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/