Re: [PATCH V3 1/6] cpufreq: suspend governors on system suspend/hibernate

[Viresh Kumar]

On 27 November 2013 01:53, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:
> On Tuesday, November 26, 2013 07:56:19 AM Viresh Kumar wrote:
>> On 26 November 2013 04:59, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:

>> > This appears to be racy.  Is it really racy, or just seemingly?
>>
>> Why does it look racy to you? Userspace should be frozen by now,
>> policy_list should be stable as well as nobody would touch it.
>
> You're stopping governors while they may be in use in principle.  Do we have
> suitable synchronization in place for that?

At what point exactly in suspend cycle do we suspend timers and workqueues.
I thought userspace would be frozen by now and so would be the governors..
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