From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756078AbaEOVu0 (ORCPT ); Thu, 15 May 2014 17:50:26 -0400 Received: from e23smtp01.au.ibm.com ([202.81.31.143]:51981 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755781AbaEOVuZ (ORCPT ); Thu, 15 May 2014 17:50:25 -0400 Message-ID: <53751321.7070905@linux.vnet.ibm.com> Date: Fri, 16 May 2014 00:48:57 +0530 From: "Srivatsa S. Bhat" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120828 Thunderbird/15.0 MIME-Version: 1.0 To: Tejun Heo CC: peterz@infradead.org, tglx@linutronix.de, mingo@kernel.org, rusty@rustcorp.com.au, akpm@linux-foundation.org, fweisbec@gmail.com, hch@infradead.org, mgorman@suse.de, riel@redhat.com, bp@suse.de, rostedt@goodmis.org, mgalbraith@suse.de, ego@linux.vnet.ibm.com, paulmck@linux.vnet.ibm.com, oleg@redhat.com, rjw@rjwysocki.net, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 2/3] CPU hotplug, stop-machine: Plug race-window that leads to "IPI-to-offline-CPU" References: <20140515191218.19811.25887.stgit@srivatsabhat.in.ibm.com> <20140515191338.19811.72313.stgit@srivatsabhat.in.ibm.com> <20140515191720.GA21306@htj.dyndns.org> In-Reply-To: <20140515191720.GA21306@htj.dyndns.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14051519-1618-0000-0000-0000003B0145 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/16/2014 12:47 AM, Tejun Heo wrote: > On Fri, May 16, 2014 at 12:43:44AM +0530, Srivatsa S. Bhat wrote: >> During CPU offline, stop-machine is used to take control over all the online >> CPUs (via the per-cpu stopper thread) and then run take_cpu_down() on the CPU >> that is to be taken offline. > ... >> Signed-off-by: Srivatsa S. Bhat > > Reviewed-by: Tejun Heo > Cool! Thanks a lot Tejun! Regards, Srivatsa S. Bhat