On Wed, 2010-05-26 at 03:06 -0700, Arve Hjønnevåg wrote:

quoted text
> I was not talking about our user-space code. Suspend has to be called
> by a running thread, so at least one runqueue is not empty.

But why would you need to suspend if the machine is fully idle?

Is it because you're using broken hardware that has lower power
consumption in suspend state as in idle?

Couldn't you make the runtime-pm smarter and utilize the suspend states?
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