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

From: Lukasz Majewski
Date: Mon Aug 12 2013 - 05:08:40 EST

On Fri, 26 Jul 2013 15:06:45 +0530 Viresh Kumar viresh.kumar@xxxxxxxxxx
> On 26 July 2013 14:03, Lukasz Majewski <l.majewski@xxxxxxxxxxx> 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.

Do you have any second thoughts about this? Shall I leave it as it is

Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group
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