linux-kernel - Re: [RFC] sleepy linux

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Message-ID: <20071226201722.GC8844@elf.ucw.cz>
Date:	Wed, 26 Dec 2007 21:17:22 +0100
From:	Pavel Machek <pavel@....cz>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	kernel list <linux-kernel@...r.kernel.org>,
	Linux-pm mailing list <linux-pm@...ts.osdl.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [RFC] sleepy linux

On Wed 2007-12-26 18:28:04, Oliver Neukum wrote:
> Am Mittwoch, 26. Dezember 2007 00:07:31 schrieb Pavel Machek:
> > Heute 00:07:31
> >    
> > This is RFC. It does not even work for me... it sleeps but it will not
> > wake up, because SATA wakeup code is missing. Code attached for illustration.
> > 
> > I wonder if this is the right approach? What is right interface to the
> > drivers?
> 
> IMHO you are making to many special cases. The system can be "sleepy"
> if all devices can be runtime suspended and all CPUs are idle.

Is there an easy way to tell if all the devices are runtime suspended?

I guess I need to know from atomic context :-(.
									Pavel
-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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