From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from moutng.kundenserver.de ([212.227.126.188]:57266 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932890AbXHIRKU (ORCPT ); Thu, 9 Aug 2007 13:10:20 -0400 From: Arnd Bergmann Subject: Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures Date: Thu, 9 Aug 2007 17:30:16 +0200 References: <20070809131423.GA9927@shell.boston.redhat.com> <200708091441.28511.arnd@arndb.de> <46BB24CB.1040405@redhat.com> In-Reply-To: <46BB24CB.1040405@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708091730.19024.arnd@arndb.de> Sender: linux-arch-owner@vger.kernel.org To: Chris Snook Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, torvalds@linux-foundation.org, netdev@vger.kernel.org, akpm@linux-foundation.org, ak@suse.de, heiko.carstens@de.ibm.com, davem@davemloft.net, schwidefsky@de.ibm.com, wensong@linux-vs.org, horms@verge.net.au, wjiang@resilience.com, cfriesen@nortel.com, zlynx@acm.org, rpjday@mindspring.com, jesper.juhl@gmail.com List-ID: On Thursday 09 August 2007, Chris Snook wrote: > a) chicken and egg: asm-generic/atomic.h depends on definitions in asm/atomic.h Ok, I see. > If you can find a way to reshuffle the code and make it simpler, I personally am > all for it. I'm skeptical that you'll get much to show for the effort. I guess it could be done using more macros or new headers, but I don't see a way that would actually improve the situation. > b) The definitions aren't precisely identical between all architectures, so it > would be a mess of special cases, which gets us right back to where we are now. Why are they not identical? Anything beyond the 32/64 bit difference should be the same afaics, or it might cause more bugs. Arnd <><