[suspend/resume] Re: userspace notification from module

[Rafael J. Wysocki]

On Saturday 16 January 2010, Pavel Machek wrote:
> Hi!
> 
> > > Agreed, but so what? On PC, machine would power off at that
> > > point. That would surprise the apps, too.
> > > 
> > > Basically new enough userland should not make battery run low enough
> > > for either emergency power off or emergency suspend.
> > 
> > I wonder how it is supposed to achieve that without knowing the current battery
> > status.  Do you mean it should poll the battery driver?
> 
> That's besides point, is it?

Well, mentioned that first. :-)

> Usual kernel<->user interfaces should apply here.

And we're talking about the design of these, aren't we?  The notification about
the critical battery status sent to the user space is a part of the kernel-user
space interface too, after all.

Rafael