From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261581AbUK2Tdg (ORCPT ); Mon, 29 Nov 2004 14:33:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261573AbUK2Tdg (ORCPT ); Mon, 29 Nov 2004 14:33:36 -0500 Received: from dbl.q-ag.de ([213.172.117.3]:47572 "EHLO dbl.q-ag.de") by vger.kernel.org with ESMTP id S261581AbUK2TA2 (ORCPT ); Mon, 29 Nov 2004 14:00:28 -0500 Message-ID: <41AB71B2.1050301@colorfullife.com> Date: Mon, 29 Nov 2004 20:00:02 +0100 From: Manfred Spraul User-Agent: Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.7.3) Gecko/20040922 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Oleg Nesterov CC: linux-kernel@vger.kernel.org, Dipankar Sarma , Andrew Morton Subject: Re: [PATCH] rcu: eliminate rcu_data.last_qsctr References: <41AA0D5F.21CB9ED3@tv-sign.ru> In-Reply-To: <41AA0D5F.21CB9ED3@tv-sign.ru> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Oleg Nesterov wrote: >last_qsctr is used in rcu_check_quiescent_state() exclusively. >We can reset qsctr at the start of the grace period, and then >just test qsctr against 0. > >On top of the 'rcu: eliminate rcu_ctrlblk.lock', see >http://marc.theaimsgroup.com/?l=linux-kernel&m=110156786721526 > >Signed-off-by: Oleg Nesterov > > > Compile and boot tested with 2.6.10-rc2 on a 2-cpu system. Signed-Off-By: Manfred Spraul