From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755359AbaEOTRY (ORCPT ); Thu, 15 May 2014 15:17:24 -0400 Received: from mail-qg0-f47.google.com ([209.85.192.47]:37830 "EHLO mail-qg0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751524AbaEOTRX (ORCPT ); Thu, 15 May 2014 15:17:23 -0400 Date: Thu, 15 May 2014 15:17:20 -0400 From: Tejun Heo To: "Srivatsa S. Bhat" 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" Message-ID: <20140515191720.GA21306@htj.dyndns.org> References: <20140515191218.19811.25887.stgit@srivatsabhat.in.ibm.com> <20140515191338.19811.72313.stgit@srivatsabhat.in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140515191338.19811.72313.stgit@srivatsabhat.in.ibm.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Thanks. -- tejun