From mboxrd@z Thu Jan 1 00:00:00 1970 From: Viresh Kumar Subject: Re: [PATCH v6 1/5] cpufreq: powernv: Hot-plug safe the kworker thread Date: Mon, 25 Jan 2016 11:19:20 +0530 Message-ID: <20160125054920.GA3183@vireshk> References: <1453447145-17722-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> <1453447145-17722-2-git-send-email-shilpa.bhat@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-pf0-f176.google.com ([209.85.192.176]:32801 "EHLO mail-pf0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751087AbcAYFtX (ORCPT ); Mon, 25 Jan 2016 00:49:23 -0500 Received: by mail-pf0-f176.google.com with SMTP id e65so76699912pfe.0 for ; Sun, 24 Jan 2016 21:49:23 -0800 (PST) Content-Disposition: inline In-Reply-To: <1453447145-17722-2-git-send-email-shilpa.bhat@linux.vnet.ibm.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Shilpasri G Bhat Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org, rjw@rjwysocki.net, linux-pm@vger.kernel.org, pc@us.ibm.com, anton@samba.org, ego@linux.vnet.ibm.com, shreyas@linux.vnet.ibm.com On 22-01-16, 12:49, Shilpasri G Bhat wrote: > In the kworker_thread powernv_cpufreq_work_fn(), we can end up > sending an IPI to a cpu going offline. This is a rare corner case > which is fixed using {get/put}_online_cpus(). Along with this fix, > this patch adds changes to do oneshot cpumask_{clear/and} operation. > > Suggested-by: Shreyas B Prabhu > Suggested-by: Gautham R Shenoy > Signed-off-by: Shilpasri G Bhat > Reviewed-by: Gautham R. Shenoy > --- > Changes form v5: > - Fix the kbuild-error: > drivers/cpufreq/powernv-cpufreq.c:428:2: error: implicit declaration of > function 'get_online_cpus' [-Werror=implicit-function-declaration > > drivers/cpufreq/powernv-cpufreq.c | 19 +++++++++++-------- > 1 file changed, 11 insertions(+), 8 deletions(-) Acked-by: Viresh Kumar -- viresh