[PATCH 0/3] cpu: idle state framework for offline CPUs.
pavel at ucw.cz
Sun Aug 9 22:08:36 EST 2009
> > > Also, approaches such as  can make use of this
> > > extended infrastructure instead of putting the CPU to an arbitrary C-state
> > > when it is offlined, thereby providing the system administrator a rope to hang
> > > himself with should he feel the need to do so.
> > I didn't see the reason why administrator needs to know which state offline cpu
> > should stay. Don't know about powerpc side, but in x86 side, it appears deepest
> > C-state is already preferred.
> Yes that is what we would expect, but the deepest sleep state may be
> restricted by BIOS or other system level parameters. This was the
> main objection to Venki's deepest sleep state for offline cpus
'May be restricted'? Kernel already needs to know about that
restriction, just do the right thing...
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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