From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755142Ab1DAJJa (ORCPT ); Fri, 1 Apr 2011 05:09:30 -0400 Received: from moutng.kundenserver.de ([212.227.126.171]:63256 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752732Ab1DAJJ2 (ORCPT ); Fri, 1 Apr 2011 05:09:28 -0400 From: Arnd Bergmann To: "Guan Xuetao" Subject: Re: [PATCH] unicore32 fix: remove arch-specific futex support Date: Fri, 1 Apr 2011 11:09:23 +0200 User-Agent: KMail/1.12.2 (Linux/2.6.37; KDE/4.3.2; x86_64; ; ) Cc: "'Thomas Gleixner'" , "'Paul Mundt'" , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org References: <01eb01cbeeb7$30390460$90ab0d20$@mprc.pku.edu.cn> <201103301440.03479.arnd@arndb.de> <004301cbef8c$b0bf0640$123d12c0$@mprc.pku.edu.cn> In-Reply-To: <004301cbef8c$b0bf0640$123d12c0$@mprc.pku.edu.cn> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201104011109.23966.arnd@arndb.de> X-Provags-ID: V02:K0:6f8ZvKs/ZDMUx3dAArUn6TvMHD8WgxWWPOdN4Anb12u pUyURsfWQVZgNBBp0CWMJz5J6eVCttZ8iQ3wOdbugOX6J5WrX6 t3AF44rnHldC5lZZFVuL9+2z2y/cQjh+ZS1C+TRSnjKW9pUx4W rdKCH9JLuDtCs+zH5Jc7OUdOZMs6xObyqMsCcH9MOod1ilJJHQ 9rm1jVZx0C/GYcNP9poKg== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 31 March 2011, Guan Xuetao wrote: > For cmpxchg, we have both system call and kuser_cmpxchg supports in old abi > which are similar to arm. > The performance of system call version is too poor, so it could be only used for test. > Let's forget about doing futex support for unicore32 then and use your original patch. Acked-by: Arnd Bergmann