Re: [RFC/PATCH] PM / Sleep: Timer quiesce in freeze state

[Li, Aubrey]

On 2014/10/27 15:28, Peter Zijlstra wrote:
> On Mon, Oct 27, 2014 at 02:27:27PM +0800, Li, Aubrey wrote:
>>> Now I suppose the problem is with cpu_pause() which needs IPIs to
>>> complete? Do we really need cpuidle_pause() there?
>>> cpuidle_uninstall_handlers() seems like a daft thing to call just about
>>> there.
>>
>> Please check the log of 8651f97bd951d0bb1c10fa24e3fa3455193f3548.
>> Rafael should know more this question than me.
> 
> That changelog explains its complete bollocks to do it here. We _want_
> to enter and/or remain in deep idle states.

cpuidle_resume() will be called at the end of dpm_resume_noirq(). So we
still are able to enter deep idle states after resume.

Thanks,
-Aubrey

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