Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934160Ab0BYVnz (ORCPT ); Thu, 25 Feb 2010 16:43:55 -0500 Received: from casper.infradead.org ([85.118.1.10]:44646 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934091Ab0BYVnt (ORCPT ); Thu, 25 Feb 2010 16:43:49 -0500 Subject: Re: [PATCH 2/3] sched: enforce per-cpu utilization limits on runtime balancing From: Peter Zijlstra To: Fabio Checconi Cc: Ingo Molnar , Thomas Gleixner , Paul Turner , Dario Faggioli , Michael Trimarchi , Dhaval Giani , Tommaso Cucinotta , linux-kernel@vger.kernel.org, Fabio Checconi In-Reply-To: <91b76b9b7555024d9afd7264eeae1b2db6a5e74c.1266931410.git.fabio@helm.retis> References: <91b76b9b7555024d9afd7264eeae1b2db6a5e74c.1266931410.git.fabio@helm.retis> Content-Type: text/plain; charset="UTF-8" Date: Thu, 25 Feb 2010 21:28:22 +0100 Message-ID: <1267129702.22519.558.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 577 Lines: 15 On Tue, 2010-02-23 at 19:56 +0100, Fabio Checconi wrote: > + /* > + * Make sure that before restarting balancing everyone > + * sees the new free bandwidth. > + */ > + smp_wmb(); You cannot order something on its own, barriers come in pairs, where is his? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/