From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 27 Jan 2006 11:27:25 +0000 (GMT) Received: from mipsfw.mips-uk.com ([194.74.144.146]:10005 "EHLO bacchus.net.dhis.org") by ftp.linux-mips.org with ESMTP id S8133357AbWA0L1H (ORCPT ); Fri, 27 Jan 2006 11:27:07 +0000 Received: from denk.linux-mips.net (denk.linux-mips.net [127.0.0.1]) by bacchus.net.dhis.org (8.13.4/8.13.4) with ESMTP id k0RBVh5A005050; Fri, 27 Jan 2006 11:31:43 GMT Received: (from ralf@localhost) by denk.linux-mips.net (8.13.4/8.13.4/Submit) id k0RBVhnM005049; Fri, 27 Jan 2006 11:31:43 GMT Date: Fri, 27 Jan 2006 11:31:43 +0000 From: Ralf Baechle To: Franck Cc: "Kevin D. Kissell" , Nigel Stephens , linux-mips@linux-mips.org Subject: Re: [RFC] Optimize swab operations on mips_r2 cpu Message-ID: <20060127113143.GB3497@linux-mips.org> References: <005101c6228c$6ebfb0a0$10eca8c0@grendel> <43D8F000.9010106@mips.com> <43D8FF16.40107@mips.com> <43D93025.9040800@mips.com> <000b01c6232a$5ea81470$10eca8c0@grendel> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 10205 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Fri, Jan 27, 2006 at 11:45:34AM +0100, Franck wrote: > no some are. As we said previously: > > 1/ sizeof(vmlinux-mips32r2-Os) > sizeof(vmlinux-4ksd-Os) > 2/ with -march=4ksd can do (slightly) better optimizations > > > for every 4KSd embedded Linux platform there are several 4KEc platforms > > that would benefit from a smaller kernel footprint. > > > > -Os can already be choosen by user in kernel configuration. Your > CONFIG_CPU_MIPS_SMALL option brings nothing more except that the user > is stuck with -Os option. BTW, I think it may be the default option in > the near future for mainline... Not before demonstrating that it is a clear win under all circumstances. Ralf