Re: [PATCH 2/11] cpufreq: governor: Use common mutex for dbs_data protection

[Viresh Kumar]

On 04-02-16, 00:16, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> 
> Every governor relying on the common code in cpufreq_governor.c
> has to provide its own mutex in struct common_dbs_data.  However,
> those mutexes are never used at the same time

Why do you think so? I thought they can always be used in parallel.

Consider 2 or more policies, one can have ondemand as the governor,
whereas other one can have conservative.

If CPUs go online/offline or if governors are switching in parallel,
then cpufreq_governor_dbs() can very much run in parallel for ondemand
and conservative.

Or am I missing something here ?

-- 
viresh