From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755144Ab1EaBqG (ORCPT ); Mon, 30 May 2011 21:46:06 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:50158 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754232Ab1EaBqE (ORCPT ); Mon, 30 May 2011 21:46:04 -0400 Date: Mon, 30 May 2011 18:45:57 -0700 From: "Paul E. McKenney" To: Peter Zijlstra Cc: Damien Wyart , Ingo Molnar , Mike Galbraith , linux-kernel@vger.kernel.org Subject: Re: Very high CPU load when idle with 3.0-rc1 Message-ID: <20110531014557.GV2668@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20110530055924.GA9169@brouette> <1306755291.1200.2872.camel@twins> <20110530162354.GQ2668@linux.vnet.ibm.com> <1306773981.23844.2.camel@twins> <20110530212955.GT2668@linux.vnet.ibm.com> <1306791328.23844.13.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1306791328.23844.13.camel@twins> 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, May 30, 2011 at 11:35:28PM +0200, Peter Zijlstra wrote: > On Mon, 2011-05-30 at 14:29 -0700, Paul E. McKenney wrote: > > But I should be able to move them back in under "if (cpu_online(cpu))", > > right? > > Yeah, you should be able to put the wakeup in the spawn function when > made conditional on cpu_online(), although I'm not quite sure how to do > that for the rnp case, but I guess you'll have a better grasp on that. OK, will give it a go. Thanx, Paul