From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762605Ab3ECNnk (ORCPT ); Fri, 3 May 2013 09:43:40 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46664 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762472Ab3ECNnj (ORCPT ); Fri, 3 May 2013 09:43:39 -0400 Message-ID: <5183BF01.9010805@redhat.com> Date: Fri, 03 May 2013 09:43:29 -0400 From: Prarit Bhargava User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110419 Red Hat/3.1.10-1.el6_0 Thunderbird/3.1.10 MIME-Version: 1.0 To: Thomas Gleixner CC: LKML , John Stultz , Yinghai Lu , Dave Jones Subject: Re: [PATCH] NOHZ, check to see if tick device is initialized in IRQ handling path References: <1367325415-32283-1-git-send-email-prarit@redhat.com> <5183AECF.4070709@redhat.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/03/2013 09:02 AM, Thomas Gleixner wrote: > On Fri, 3 May 2013, Prarit Bhargava wrote: >> Down a cpu and then bring it back up. > > Ahhhh. So the issue is, that we do not clear the per cpu ts->inidle > and friends when we bring the cpu down. > :) I'll give this a shot and will update with testing results. Thanks tglx! P.