From: Pavel Machek <pavel@ucw.cz>
To: Uli Luckas <u.luckas@road.de>
Cc: swetland@google.com, linux-pm@lists.linux-foundation.org,
Nigel Cunningham <ncunningham@crca.org.au>
Subject: Re: [RFC][PATCH 00/11] Android PM extensions
Date: Mon, 2 Feb 2009 12:46:44 +0100 [thread overview]
Message-ID: <20090202114644.GC4631@elf.ucw.cz> (raw)
In-Reply-To: <200901301334.03007.u.luckas@road.de>
On Fri 2009-01-30 13:34:02, Uli Luckas wrote:
> On Friday, 30. January 2009, Pavel Machek wrote:
> > > >> - The user-space input-event thread returns from read. It determines
> > > >> that the key should not wake up the system, releases the
> > > >> process-input-events wakelock and calls select or poll.
> > > >
> > > > This makes no sense. If the system wasn't asleep to begin with, how
> > > > could the key wake it up? And if the system _was_ asleep to begin
> > > > with, how could all of this happen without waking the system up?
> > >
> > > What I mean here is that the screen turns on and the system does not
> > > immediately go back to sleep. The user-space framework has its own
> > > idea of whether the system is awake or not. I can change this to
> > > "fully wake up" or "turn on the screen".
> >
> > "turn on the screen", please. (But I still don't quite get it; screen
> > should be at full control of userspace, so why is kernel interaction
> > needed?) Pavel
> >
> Turning on the screen is only on thing userspace can do. What exactly happens
> is beyon the scope of the kernel interface.
> The right term is probably something like "break out of auto-suspend" or "wake
> from auto suspend".
I guess I'm missing big parts of the picture here. It would be nice to
document how it all works together... somewhere.
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:[~2009-02-02 11:46 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-14 1:27 [RFC][PATCH 00/11] Android PM extensions Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 01/11] PM: Add wake lock api Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 02/11] PM: Add early suspend api Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 03/11] PM: Implement wakelock api Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 04/11] PM: Implement early suspend api Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 05/11] PM: Enable early suspend through /sys/power/state Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 06/11] PM: Add user-space wake lock api Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 07/11] PM: wakelock: Abort task freezing if a wake lock is held Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 08/11] PM: earlysuspend: Add console switch when user requested sleep state changes Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 09/11] PM: earlysuspend: Removing dependence on console Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 10/11] Input: Hold wake lock while event queue is not empty Arve Hjønnevåg
2009-01-14 1:27 ` [PATCH 11/11] ledtrig-sleep: Add led trigger for sleep debugging Arve Hjønnevåg
2009-01-30 12:43 ` [PATCH 06/11] PM: Add user-space wake lock api Uli Luckas
2009-01-31 0:17 ` Arve Hjønnevåg
2009-01-31 7:24 ` Brian Swetland
2009-01-28 19:34 ` [PATCH 05/11] PM: Enable early suspend through /sys/power/state Pavel Machek
2009-01-31 3:13 ` Arve Hjønnevåg
2009-01-31 15:49 ` Alan Stern
2009-02-02 11:44 ` Pavel Machek
2009-02-02 11:45 ` Pavel Machek
2009-02-02 22:36 ` Arve Hjønnevåg
2009-01-14 9:48 ` [PATCH 04/11] PM: Implement early suspend api Nigel Cunningham
2009-01-14 23:57 ` Arve Hjønnevåg
2009-01-14 9:30 ` [PATCH 03/11] PM: Implement wakelock api Nigel Cunningham
2009-01-14 23:28 ` Arve Hjønnevåg
2009-01-14 9:17 ` [PATCH 02/11] PM: Add early suspend api Nigel Cunningham
2009-01-14 23:18 ` Arve Hjønnevåg
2009-01-14 9:09 ` [PATCH 01/11] PM: Add wake lock api Nigel Cunningham
2009-01-14 23:07 ` Arve Hjønnevåg
2009-01-14 9:01 ` [RFC][PATCH 00/11] Android PM extensions Nigel Cunningham
2009-01-15 0:10 ` Arve Hjønnevåg
2009-01-15 4:42 ` Arve Hjønnevåg
2009-01-15 15:08 ` Alan Stern
2009-01-15 20:34 ` Arve Hjønnevåg
2009-01-29 13:04 ` Pavel Machek
2009-01-30 1:16 ` Arve Hjønnevåg
2009-01-30 3:27 ` Alan Stern
2009-01-30 4:40 ` Arve Hjønnevåg
2009-01-30 6:04 ` Arve Hjønnevåg
2009-02-02 11:49 ` Pavel Machek
2009-01-30 9:11 ` Pavel Machek
2009-01-30 12:34 ` Uli Luckas
2009-02-02 11:46 ` Pavel Machek [this message]
2009-01-30 15:13 ` Alan Stern
2009-01-31 0:02 ` Arve Hjønnevåg
2009-01-31 16:19 ` Alan Stern
2009-01-31 23:28 ` Arve Hjønnevåg
2009-02-02 10:42 ` Uli Luckas
2009-02-02 15:05 ` Alan Stern
2009-02-02 16:15 ` Uli Luckas
2009-02-02 16:35 ` Alan Stern
2009-02-03 20:15 ` Pavel Machek
2009-01-31 7:47 ` Brian Swetland
2009-01-31 15:41 ` Alan Stern
2009-01-31 18:39 ` Rafael J. Wysocki
2009-01-31 18:54 ` Igor Stoppa
2009-02-01 1:04 ` Arve Hjønnevåg
2009-02-02 11:55 ` Pavel Machek
2009-01-31 22:41 ` Arve Hjønnevåg
2009-01-31 23:20 ` Rafael J. Wysocki
2009-01-31 23:32 ` Arve Hjønnevåg
2009-02-01 0:18 ` Rafael J. Wysocki
2009-02-01 1:17 ` Arve Hjønnevåg
2009-02-01 1:32 ` Rafael J. Wysocki
2009-02-01 2:14 ` Arve Hjønnevåg
2009-02-01 12:30 ` Rafael J. Wysocki
2009-02-01 14:03 ` Woodruff, Richard
2009-02-01 17:43 ` Alan Stern
2009-02-01 19:27 ` Woodruff, Richard
2009-02-02 11:00 ` Uli Luckas
2009-02-02 15:09 ` Alan Stern
2009-02-02 16:24 ` Uli Luckas
2009-02-02 21:47 ` Nigel Cunningham
2009-02-02 23:21 ` Arve Hjønnevåg
2009-02-02 23:51 ` Nigel Cunningham
2009-02-03 0:08 ` Arve Hjønnevåg
2009-02-04 13:25 ` Pavel Machek
2009-02-02 23:10 ` Arve Hjønnevåg
2009-02-03 3:27 ` Alan Stern
2009-02-03 4:18 ` Arve Hjønnevåg
2009-02-03 20:30 ` Alan Stern
2009-02-04 13:29 ` Pavel Machek
2009-02-02 11:56 ` Pavel Machek
2009-02-02 12:38 ` Uli Luckas
2009-01-30 9:08 ` Pavel Machek
2009-01-30 9:25 ` Brian Swetland
2009-01-28 19:31 ` Pavel Machek
-- strict thread matches above, loose matches on Subject: below --
2009-02-05 2:50 Arve Hjønnevåg
2009-02-06 23:51 ` Rafael J. Wysocki
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