From: Pavel Machek <pavel@ucw.cz>
To: Oliver Neukum <oliver@neukum.org>
Cc: kernel list <linux-kernel@vger.kernel.org>,
Linux-pm mailing list <linux-pm@lists.osdl.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [RFC] sleepy linux
Date: Sat, 29 Dec 2007 23:48:20 +0000 [thread overview]
Message-ID: <20071229234820.GB17823@ucw.cz> (raw)
In-Reply-To: <200712270015.40165.oliver@neukum.org>
Hi!
> > > > Is there an easy way to tell if all the devices are runtime suspended?
> > >
> > > Do you really want to know whether they are suspended or whether they
> > > could be suspended?
> >
> > If they are suspended.
> >
> > My plan is: let the drivers autosuspend on their own. If I see all of
> > them are autosuspended, then it looks like great time to put whole
> > system into s2ram...
>
> Your calculation of cost/benefit will be wrong. A driver will have timeouts
> based on the cost of a suspend/resume cycle of that device only.
> You'd have to calculate of keeping the whole system awake against that.
Hmm, right. Driver probably should have chance to autosuspend but tell
the core that whole system probably should not sleep... Hmm....
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2007-12-29 23:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-25 23:07 [RFC] sleepy linux Pavel Machek
2007-12-26 17:28 ` Oliver Neukum
2007-12-26 19:02 ` Pavel Machek
2007-12-26 20:17 ` Pavel Machek
2007-12-26 20:23 ` Oliver Neukum
2007-12-26 20:32 ` Pavel Machek
2007-12-26 23:15 ` Oliver Neukum
2007-12-29 23:48 ` Pavel Machek [this message]
2007-12-27 9:41 ` Oliver Neukum
2007-12-29 23:51 ` Pavel Machek
2007-12-30 16:39 ` Oliver Neukum
2007-12-31 14:44 ` Pavel Machek
2008-01-02 10:52 ` Oliver Neukum
2007-12-26 18:56 ` H. Peter Anvin
2007-12-26 19:00 ` Pavel Machek
2007-12-26 19:22 ` H. Peter Anvin
2007-12-26 20:08 ` Oliver Neukum
2007-12-26 20:43 ` H. Peter Anvin
2007-12-26 20:51 ` Pavel Machek
2007-12-26 20:54 ` H. Peter Anvin
2007-12-29 23:44 ` Pavel Machek
2007-12-26 20:09 ` [linux-pm] " Igor Stoppa
2007-12-30 11:15 ` Ingo Molnar
2008-01-05 21:51 ` Pavel Machek
2008-01-08 16:37 ` Ingo Molnar
2008-01-08 19:15 ` Pavel Machek
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