Re: [PATCH v6 2/8] cpufreq: Add boost frequency support in core

Viresh Kumar
2013-07-26T09:36:48Z

On 26 July 2013 14:03, Lukasz Majewski <l.majewski@samsung.com> wrote:
> The problem here is with the cpufreq_driver->set_boost() call.
>
> I tried to avoid acquiring lock at one function and release it at
> another (in this case cpufreq_boost_set_sw), especially since the
> __cpufreq_governor() acquires its own lock - good place for deadlock.
>
> Is it OK for you to grab lock at one function
> (cpufreq_boost_trigger_state()) and then at other function
> (cpufreq_boost_set_sw) release it before calling __cpufreq_governor()
> and grab it again after its completion?

Problem is not only that.. but we shouldn't call boost_set() of drivers
like acpi-cpufreq with this lock..... Leave it as it is for now.. Let me see
if I can think of any problems that can happen due to this.