Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932228AbWAYXYk (ORCPT ); Wed, 25 Jan 2006 18:24:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932229AbWAYXYj (ORCPT ); Wed, 25 Jan 2006 18:24:39 -0500 Received: from outmail1.freedom2surf.net ([194.106.33.237]:60556 "EHLO outmail.freedom2surf.net") by vger.kernel.org with ESMTP id S932223AbWAYXYg (ORCPT ); Wed, 25 Jan 2006 18:24:36 -0500 Message-ID: <43D808EE.9040906@f2s.com> Date: Wed, 25 Jan 2006 23:25:34 +0000 From: Ian Molton Organization: The Dragon Roost User-Agent: Mozilla Thunderbird 1.0.7 (X11/20051219) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Russell King CC: Akinobu Mita , linux-kernel@vger.kernel.org, Richard Henderson , Ivan Kokshaysky , dev-etrax@axis.com, David Howells , Yoshinori Sato , Linus Torvalds , linux-ia64@vger.kernel.org, Hirokazu Takata , linux-m68k@vger.kernel.org, Greg Ungerer , linux-mips@linux-mips.org, parisc-linux@parisc-linux.org, linuxppc-dev@ozlabs.org, linux390@de.ibm.com, linuxsh-dev@lists.sourceforge.net, linuxsh-shmedia-dev@lists.sourceforge.net, sparclinux@vger.kernel.org, ultralinux@vger.kernel.org, Miles Bader , Andi Kleen , Chris Zankel Subject: Re: [PATCH 3/6] C-language equivalents of include/asm-*/bitops.h References: <20060125112625.GA18584@miraclelinux.com> <20060125113206.GD18584@miraclelinux.com> <20060125200250.GA26443@flint.arm.linux.org.uk> In-Reply-To: <20060125200250.GA26443@flint.arm.linux.org.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 513 Lines: 15 Russell King wrote: > This code generates more expensive shifts than our (ARMs) existing C > version. This is a backward step. > > Basically, shifts which depend on a variable are more expensive than > constant-based shifts. arm26 will have the same problem here. - 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/