Re: [RFD] Automatic suspend

Pavel Machek
2009-02-22T13:46:18Z

Hi!

> > > The recent descussion about the Android PM patches sent by Arve shows that
> > > there is a need to introduce a mechanism allowing us to:
> > > (1) automatically put the system as a whole into a sleep state (eg. suspend to
> > > RAM) when it is found to be "idle", where the meaning of "idle" has to be
> > > defined too,
> >
> > Well; I'd prefer to keep the interface very minimal.
> >
> > If no devices are being used,
>
> We'll need some kind of infrastructure to detect such situations.

Yes, I like the latest 'atomic_t + bit in struct device' ideas...

> > and next wakeup is far enough in the future,
>
> What exactly do you mean by "next wakeup"?

Next timer in kernel and next sleep/select timeout in userspace.

Pavel
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