Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937116AbWLFTIh (ORCPT ); Wed, 6 Dec 2006 14:08:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760677AbWLFTIh (ORCPT ); Wed, 6 Dec 2006 14:08:37 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:59494 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760669AbWLFTIg (ORCPT ); Wed, 6 Dec 2006 14:08:36 -0500 Date: Wed, 6 Dec 2006 19:08:28 +0000 From: Al Viro To: Linus Torvalds Cc: Christoph Lameter , Russell King , David Howells , Andrew Morton , linux-arm-kernel@lists.arm.linux.org.uk, Linux Kernel Mailing List , linux-arch@vger.kernel.org Subject: Re: [PATCH] WorkStruct: Implement generic UP cmpxchg() where an arch doesn't support it Message-ID: <20061206190828.GE4587@ftp.linux.org.uk> References: <20061206164314.19870.33519.stgit@warthog.cambridge.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 662 Lines: 17 On Wed, Dec 06, 2006 at 11:05:22AM -0800, Linus Torvalds wrote: > > > On Wed, 6 Dec 2006, Christoph Lameter wrote: > > > > I'd really appreciate a cmpxchg that is generically available for > > all arches. It will allow lockless implementation for various performance > > criticial portions of the kernel. > > I suspect ARM may have been the last one without one, no? No. sparc32 doesn't have one, for instance. - 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/