Re: [PATCH] PM / suspend: Always use deepest C-state in the "freeze" sleep state

From: Rafael J. Wysocki
Date: Fri May 09 2014 - 07:10:17 EST


On Friday, May 09, 2014 09:38:35 AM Pavel Machek wrote:
> On Mon 2014-05-05 00:51:54, Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> >
> > If freeze_enter() is called, we want to bypass the current cpuidle
> > governor and always use the deepest available (that is, not disabled)
> > C-state, because we want to save as much energy as reasonably possible
> > then and runtime latency constraints don't matter at that point, since
> > the system is in a sleep state anyway.
>
> Would there be way to pass the parameter "go to deepest" instead of adding
> global state for this?

I'm not sure what you mean? A parameter of what in particular? And where
to pass it?

Rafael

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