Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1425619AbWLHQn3 (ORCPT ); Fri, 8 Dec 2006 11:43:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1425618AbWLHQn3 (ORCPT ); Fri, 8 Dec 2006 11:43:29 -0500 Received: from omx1-ext.sgi.com ([192.48.179.11]:37309 "EHLO omx1.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1425616AbWLHQn1 (ORCPT ); Fri, 8 Dec 2006 11:43:27 -0500 Date: Fri, 8 Dec 2006 08:43:09 -0800 (PST) From: Christoph Lameter To: Russell King cc: Nick Piggin , David Howells , torvalds@osdl.org, akpm@osdl.org, linux-arm-kernel@lists.arm.linux.org.uk, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: Re: [PATCH] WorkStruct: Implement generic UP cmpxchg() where an arch doesn't support it In-Reply-To: <20061208163127.GD31068@flint.arm.linux.org.uk> Message-ID: References: <20061206164314.19870.33519.stgit@warthog.cambridge.redhat.com> <20061206190025.GC9959@flint.arm.linux.org.uk> <20061206195820.GA15281@flint.arm.linux.org.uk> <4577DF5C.5070701@yahoo.com.au> <20061207150303.GB1255@flint.arm.linux.org.uk> <4578BD7C.4050703@yahoo.com.au> <20061208085634.GA25751@flint.arm.linux.org.uk> <20061208163127.GD31068@flint.arm.linux.org.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 614 Lines: 15 On Fri, 8 Dec 2006, Russell King wrote: > You're advocating cmpxchg is adopted by all architectures. It isn't > available on many architectures, and those which it can be requires > unnecessarily complicated coding. Not having cmpxchg is even worse because it requires the introduction and maintenance of large sets of arch specific operations. Much more complex. - 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/