From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 4 May 2001 17:13:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 4 May 2001 17:13:47 -0400 Received: from dsl081-246-098.sfo1.dsl.speakeasy.net ([64.81.246.98]:26120 "EHLO are.twiddle.net") by vger.kernel.org with ESMTP id ; Fri, 4 May 2001 17:12:49 -0400 Date: Fri, 4 May 2001 14:12:40 -0700 From: Richard Henderson To: Ivan Kokshaysky Cc: linux-kernel@vger.kernel.org Subject: Re: [patch] 2.4.4 alpha semaphores optimization Message-ID: <20010504141240.A11122@twiddle.net> Mail-Followup-To: Ivan Kokshaysky , linux-kernel@vger.kernel.org In-Reply-To: <20010503194747.A552@jurassic.park.msu.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010503194747.A552@jurassic.park.msu.ru>; from ink@jurassic.park.msu.ru on Thu, May 03, 2001 at 07:47:47PM +0400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 03, 2001 at 07:47:47PM +0400, Ivan Kokshaysky wrote: > - removed some mb's for non-SMP This isn't correct. Either you need atomic updates or you don't. If you don't, then you shouldn't be using ll/sc at all. If you do (perhaps to coordinate with devices) then the barriers are required. > - removed non-inline up()/down_xx() when semaphore/waitqueue debugging > isn't enabled. They should still be exported for module compatibility. r~