Re: [PATCH V4 2/7] cpufreq: Call __cpufreq_governor() with policy->rwsem held
From: Viresh Kumar
Date: Thu Feb 11 2016 - 06:53:03 EST
On 11-02-16, 10:48, Rafael J. Wysocki wrote:
> On Tue, Feb 9, 2016 at 4:46 AM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
> > Also note that cpufreq_driver->stop_cpu() and ->exit() can get called
> > while policy->rwsem is held. That shouldn't have any side effects
> > though.
>
> The last paragraph is unclear.
>
> Is it supposed to mean that the change will cause
> cpufreq_driver->stop_cpu() and ->exit() to be called under
> policy->rwsem sometimes?
Yeah, reworded it a bit ..
Also note that, after this patch cpufreq_driver->stop_cpu() and ->exit()
will get called while policy->rwsem is held, which wasn't the case
earlier. That shouldn't have any side effects though.
--
viresh