linux-kernel - Re: [PATCH 5/5] cpufreq: use correct values of cpus in __cpufreq_remove_dev

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Message-ID: <4586351.EPC2yFj4Nj@vostro.rjw.lan>
Date:	Tue, 17 Sep 2013 20:43:30 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Stephen Warren <swarren@...dotorg.org>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>,
	Patch Tracking <patches@...aro.org>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/5] cpufreq: use correct values of cpus in __cpufreq_remove_dev_finish()

On Tuesday, September 17, 2013 09:48:08 PM Viresh Kumar wrote:
> On 17 September 2013 20:50, Stephen Warren <swarren@...dotorg.org> wrote:
> > On 09/11/2013 11:25 PM, Viresh Kumar wrote:
> >> This broke after a recent change "cedb70a cpufreq: Split __cpufreq_remove_dev()
> >> into two parts" from Srivatsa..
> >>
> >> Consider a scenario where we have two CPUs in a policy (0 & 1) and we are
> >> removing cpu 1. On the call to __cpufreq_remove_dev_prepare() we have cleared 1
> >> from policy->cpus and now on a call to __cpufreq_remove_dev_finish() we read
> >> cpumask_weight of policy->cpus, which will come as 1 and this code will behave
> >> as if we are removing the last cpu from policy :)
> >>
> >> Fix it by clearing cpu mask in __cpufreq_remove_dev_finish() instead of
> >> __cpufreq_remove_dev_prepare().
> >
> > I see this patch isn't in linux-next yet, nor did it make 3.12-rc1. I
> > assume it'll make 3.12-rc2? It solves various CPU hotplug and
> > suspend/resume issues for me.
> 
> Yes, I have asked Rafael to get this in for rc2 and few others too..
> Waiting for his reply though..

Care to remind me what the other patches were?

Rafael

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