From: Pavel Machek <pavel@ucw.cz>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Arve Hj?nnev?g <arve@android.com>,
"Woodruff, Richard" <r-woodruff2@ti.com>,
Arjan van de Ven <arjan@infradead.org>,
Kyle Moffett <kyle@moffetthome.net>,
Oliver Neukum <oliver@neukum.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
pm list <linux-pm@lists.linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Nigel Cunningham <nigel@nigel.suspend2.net>,
Matthew Garrett <mjg59@srcf.ucam.org>,
mark gross <mgross@linux.intel.com>,
Uli Luckas <u.luckas@road.de>,
Igor Stoppa <igor.stoppa@nokia.com>,
Brian Swetland <swetland@google.com>, Len Brown <lenb@kernel.org>
Subject: Re: [RFD] Automatic suspend
Date: Sun, 22 Feb 2009 15:03:11 +0100 [thread overview]
Message-ID: <20090222140311.GF1387@ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0902190956570.3012-100000@iolanthe.rowland.org>
Hi!
> > Again, the decision to trigger automatic suspend has to be based on some
> > well defined criteria and the (in)activity of devices seems to be one of them.
>
> I don't know what criteria the system monitor would use. It might have
> to be platform-specific. The Android people seem to have a pretty good
> idea of what criteria will work for them.
>
> Inactivity of devices isn't always a good criterion. There might be a
> background task which wakes up every few seconds to do something as
> long as the system is awake, thereby keeping some device always active.
> The activity from this background task shouldn't prevent an auto-sleep.
Then we'd need a interface to mark such background task... and what is
reasonable use for such task, anyway? Either its job is neccessary, or
it should not waste power.
IOW maybe it is easier to eliminate such stuff?
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:[~2009-02-22 14:03 UTC|newest]
Thread overview: 195+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-15 23:10 [RFD] Automatic suspend Rafael J. Wysocki
2009-02-16 0:44 ` Arjan van de Ven
2009-02-16 2:12 ` Benjamin Herrenschmidt
2009-02-16 2:20 ` Arjan van de Ven
2009-02-16 3:23 ` Benjamin Herrenschmidt
2009-02-16 3:30 ` Arjan van de Ven
2009-02-16 23:05 ` Pavel Machek
2009-02-16 7:06 ` Oliver Neukum
2009-02-16 15:40 ` Arjan van de Ven
2009-02-16 16:48 ` Oliver Neukum
2009-02-16 17:31 ` Arjan van de Ven
2009-02-16 20:08 ` Kyle Moffett
2009-02-16 20:28 ` Arjan van de Ven
2009-02-16 20:39 ` Alan Stern
2009-02-16 20:45 ` Arjan van de Ven
2009-02-16 21:32 ` Woodruff, Richard
2009-02-16 21:52 ` Arjan van de Ven
2009-02-16 22:36 ` Woodruff, Richard
2009-02-16 22:59 ` Arjan van de Ven
2009-02-16 23:19 ` Rafael J. Wysocki
2009-02-16 23:23 ` Matthew Garrett
2009-02-17 10:12 ` Oliver Neukum
2009-02-17 13:58 ` Mark Brown
2009-02-17 14:20 ` Brian Swetland
2009-02-17 14:24 ` Matthew Garrett
2009-02-17 14:56 ` Oliver Neukum
2009-02-17 14:46 ` Arjan van de Ven
2009-02-17 14:51 ` Matthew Garrett
2009-02-17 14:56 ` Arjan van de Ven
2009-02-17 15:32 ` Woodruff, Richard
2009-02-18 0:04 ` Arjan van de Ven
2009-02-18 0:18 ` Woodruff, Richard
2009-02-18 5:35 ` Arjan van de Ven
2009-02-18 0:52 ` mark gross
2009-02-18 5:11 ` Arve Hjønnevåg
2009-02-18 5:55 ` Arjan van de Ven
2009-02-18 15:15 ` Matthew Garrett
2009-02-18 15:20 ` Woodruff, Richard
2009-02-17 14:58 ` Igor Stoppa
2009-02-17 15:28 ` Brian Swetland
2009-02-18 0:55 ` mark gross
2009-02-18 2:40 ` Benjamin Herrenschmidt
2009-02-18 17:48 ` Jesse Barnes
2009-02-18 17:52 ` Matthew Garrett
2009-02-18 18:01 ` Jesse Barnes
2009-02-18 22:05 ` Benjamin Herrenschmidt
2009-03-01 22:51 ` Pavel Machek
2009-02-27 10:00 ` Pavel Machek
2009-02-18 0:45 ` mark gross
2009-02-20 5:35 ` Arve Hjønnevåg
2009-02-20 15:27 ` Arjan van de Ven
2009-02-20 18:22 ` Pavel Machek
2009-02-20 18:26 ` Matthew Garrett
2009-02-20 20:49 ` Rafael J. Wysocki
2009-02-20 22:43 ` Arve Hjønnevåg
2009-02-16 23:41 ` Arjan van de Ven
2009-02-16 23:08 ` Rafael J. Wysocki
2009-02-17 3:09 ` Alan Stern
2009-02-17 23:21 ` Rafael J. Wysocki
2009-02-18 4:46 ` Arve Hjønnevåg
2009-02-18 21:17 ` Rafael J. Wysocki
2009-02-18 22:35 ` Arve Hjønnevåg
2009-02-18 22:44 ` Oliver Neukum
2009-02-18 23:04 ` Rafael J. Wysocki
2009-02-18 23:31 ` Alan Stern
2009-02-19 12:56 ` Rafael J. Wysocki
2009-02-19 14:59 ` Alan Stern
2009-02-19 21:15 ` Rafael J. Wysocki
2009-02-19 21:56 ` Brian Swetland
2009-02-19 22:08 ` Alan Stern
2009-02-19 22:21 ` Rafael J. Wysocki
2009-02-19 22:58 ` Oliver Neukum
2009-02-20 10:46 ` Rafael J. Wysocki
2009-02-20 22:05 ` Oliver Neukum
2009-02-20 22:44 ` Rafael J. Wysocki
2009-02-20 23:11 ` Arve Hjønnevåg
2009-02-20 23:20 ` Oliver Neukum
2009-02-21 1:59 ` Arve Hjønnevåg
2009-02-20 2:39 ` Arve Hjønnevåg
2009-02-20 10:49 ` Rafael J. Wysocki
2009-02-20 11:26 ` Arve Hjønnevåg
2009-02-20 15:56 ` Rafael J. Wysocki
2009-02-20 16:07 ` Kyle Moffett
2009-02-20 20:56 ` Rafael J. Wysocki
2009-02-20 21:02 ` Rafael J. Wysocki
2009-02-20 23:03 ` Arve Hjønnevåg
2009-02-20 23:57 ` Rafael J. Wysocki
2009-02-21 1:08 ` Arve Hjønnevåg
2009-02-21 9:47 ` Rafael J. Wysocki
2009-02-21 10:32 ` Arve Hjønnevåg
2009-02-21 20:20 ` Rafael J. Wysocki
2009-02-23 23:13 ` Arve Hjønnevåg
2009-02-23 23:53 ` Rafael J. Wysocki
2009-02-24 0:02 ` Arve Hjønnevåg
2009-02-27 10:12 ` Pavel Machek
2009-02-27 10:09 ` Pavel Machek
2009-02-27 14:22 ` Rafael J. Wysocki
2009-02-27 14:29 ` Matthew Garrett
2009-02-27 20:54 ` Rafael J. Wysocki
2009-02-27 22:09 ` Arve Hjønnevåg
2009-02-27 22:55 ` Rafael J. Wysocki
2009-02-27 20:40 ` Pavel Machek
2009-02-27 20:55 ` Rafael J. Wysocki
2009-02-27 22:56 ` Arve Hjønnevåg
2009-02-27 23:44 ` Pavel Machek
2009-02-28 3:04 ` Arve Hjønnevåg
2009-02-28 10:18 ` Rafael J. Wysocki
2009-02-28 21:57 ` Arve Hjønnevåg
2009-02-28 22:53 ` Rafael J. Wysocki
2009-02-28 23:38 ` Arve Hjønnevåg
2009-03-01 23:17 ` Rafael J. Wysocki
2009-03-02 23:48 ` Arve Hjønnevåg
2009-03-03 22:39 ` Rafael J. Wysocki
2009-03-03 23:38 ` Arve Hjønnevåg
2009-03-04 0:49 ` Pavel Machek
2009-03-01 0:06 ` Arve Hjønnevåg
2009-03-01 6:28 ` Benjamin Herrenschmidt
2009-03-01 9:11 ` Rafael J. Wysocki
2009-03-01 9:20 ` Rafael J. Wysocki
2009-03-03 1:22 ` Arve Hjønnevåg
2009-03-03 13:51 ` Pavel Machek
2009-03-04 0:06 ` Arve Hjønnevåg
2009-03-04 0:47 ` Pavel Machek
2009-03-01 23:08 ` Pavel Machek
2009-03-03 13:57 ` Pavel Machek
2009-03-03 23:51 ` Arve Hjønnevåg
2009-02-20 23:12 ` Oliver Neukum
2009-02-20 23:40 ` Rafael J. Wysocki
2009-02-20 23:45 ` Matthew Garrett
2009-02-21 9:52 ` Rafael J. Wysocki
2009-02-21 16:52 ` Alan Stern
2009-02-21 21:14 ` Rafael J. Wysocki
2009-02-27 10:16 ` Pavel Machek
2009-02-27 14:46 ` Alan Stern
2009-02-27 20:58 ` Rafael J. Wysocki
2009-02-22 14:03 ` Pavel Machek [this message]
2009-02-23 14:04 ` Oliver Neukum
2009-02-27 10:18 ` Pavel Machek
2009-02-27 15:22 ` Oliver Neukum
2009-03-05 16:54 ` Pavel Machek
2009-02-27 17:09 ` Chris Friesen
2009-02-27 20:46 ` Pavel Machek
2009-03-05 13:48 ` Pavel Machek
2009-03-01 22:56 ` Pavel Machek
2009-03-02 8:24 ` Oliver Neukum
2009-03-02 14:34 ` Pavel Machek
2009-03-02 15:13 ` Arjan van de Ven
2009-02-16 23:20 ` Oliver Neukum
2009-02-20 18:05 ` Pavel Machek
2009-02-16 6:23 ` Roland Dreier
2009-02-16 15:38 ` Arjan van de Ven
2009-02-16 22:47 ` Pavel Machek
2009-02-16 7:02 ` Oliver Neukum
2009-02-16 21:48 ` Rafael J. Wysocki
2009-02-16 21:52 ` Peter Zijlstra
2009-02-16 21:53 ` Arjan van de Ven
2009-02-16 22:12 ` Rafael J. Wysocki
2009-02-16 22:40 ` Alan Stern
2009-02-16 22:56 ` Arjan van de Ven
2009-02-16 23:28 ` Rafael J. Wysocki
2009-02-17 2:43 ` Alan Stern
2009-02-17 2:57 ` Arjan van de Ven
2009-02-17 3:26 ` Alan Stern
2009-02-16 23:02 ` Rafael J. Wysocki
2009-02-17 2:56 ` Alan Stern
2009-02-17 23:26 ` Rafael J. Wysocki
2009-02-18 8:53 ` Oliver Neukum
2009-02-18 14:51 ` Arjan van de Ven
2009-02-18 15:05 ` Oliver Neukum
2009-02-18 15:10 ` Alan Stern
2009-02-18 15:55 ` Oliver Neukum
2009-02-18 16:39 ` Alan Stern
2009-02-18 17:10 ` Oliver Neukum
2009-02-18 15:09 ` Alan Stern
2009-02-16 22:51 ` Pavel Machek
2009-02-16 22:55 ` Arjan van de Ven
2009-02-16 23:00 ` Rafael J. Wysocki
2009-02-16 23:18 ` Pavel Machek
2009-02-16 23:29 ` Oliver Neukum
2009-02-16 22:58 ` Pavel Machek
2009-02-16 23:13 ` Matthew Garrett
2009-02-16 23:22 ` Pavel Machek
2009-02-16 23:26 ` Matthew Garrett
2009-02-17 14:14 ` Brian Swetland
2009-02-17 14:19 ` Matthew Garrett
2009-02-17 21:57 ` mark gross
2009-02-17 22:04 ` Matthew Garrett
2009-02-17 22:19 ` Jesse Barnes
2009-02-17 23:28 ` Woodruff, Richard
2009-02-18 0:34 ` mark gross
2009-02-18 17:30 ` Chris Ball
2009-02-16 23:26 ` Rafael J. Wysocki
2009-02-22 13:46 ` Pavel Machek
2009-02-18 0:27 ` mark gross
2009-02-18 21:11 ` Rafael J. Wysocki
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