Re: So, what's the status on the recent patches here?

Pavel Machek
2006-09-03T21:33:26Z

> >That depends on the definition, but I think of suspend states as the ones
> >that require processes to be frozen before they can be entered. IMHO it is
> >quite clear that such states cannot be handled in the same way as those
> >that do not require the freezing of processes, so they are not the same.
>
> You are correct, processes do need to be frozen before a suspend.
> That's the prepare to suspend part of the suspend process, and
> the transtition is the suspending and finish is the un-freezing
> of the processes to resume execution.
>
> And those same steps are the same steps required to transition the
> system to a new operating point, whether it's suspend or change
> from 1.4GHz to 600MHz.

No, processes are not frozen for simple cpu frequency change -- on
non-broken cpus.
Pavel
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