Messages in this thread | | | Date | Sun, 9 Aug 2009 14:08:36 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH 0/3] cpu: idle state framework for offline CPUs. |
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Hi!
> > > Also, approaches such as [1] 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 > patch.
'May be restricted'? Kernel already needs to know about that restriction, just do the right thing...
-- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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