Subject: Re: [PATCH] cpuidle/powernv: Enter fastsleep on checking if deep idle states are allowed

From: Benjamin Herrenschmidt <[email-masked]>
Date: Mon, 15 Sep 2014 08:23:16 -0400

On Mon, 2014-09-15 at 14:22 +0530, Preeti U Murthy wrote:
> > We were talking about getting rid of powersave_nap altogether, but I
> think we
> > decided we couldn't, I forget.
> 
> Isn't this a helpful knob to disable cpuidle at runtime? Currently we
> check the value of powersave_nap before entering both nap and
> fastsleep.

It's useful when diagnosing some problems that can be caused by idle
states.

Cheers,
Ben.