From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758119Ab1DYIig (ORCPT ); Mon, 25 Apr 2011 04:38:36 -0400 Received: from ksp.mff.cuni.cz ([195.113.26.206]:34023 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756650Ab1DYIif (ORCPT ); Mon, 25 Apr 2011 04:38:35 -0400 Date: Mon, 25 Apr 2011 10:38:32 +0200 From: Pavel Machek To: Mike Frysinger Cc: "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, linux-pm@lists.linux-foundation.org Subject: Re: [PATCH] freezer: use smp barriers Message-ID: <20110425083832.GA3770@elf.ucw.cz> References: <1303716665-27584-1-git-send-email-vapier@gentoo.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1303716665-27584-1-git-send-email-vapier@gentoo.org> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon 2011-04-25 03:31:05, Mike Frysinger wrote: > The freezer processes are dealing with multiple threads running > simultaneously, and on a UP system, the memory reads/writes do > not need barriers to keep things in sync. These are only needed > on SMP systems, so use SMP barriers instead. > > Signed-off-by: Mike Frysinger ACK. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html