From: "Woodruff, Richard" <r-woodruff2@ti.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: "swetland@google.com" <swetland@google.com>,
"linux-pm@lists.linux-foundation.org"
<linux-pm@lists.linux-foundation.org>,
Uli Luckas <u.luckas@road.de>,
"ncunningham@crca.org.au" <ncunningham@crca.org.au>
Subject: Re: non-racy examples, please (was Re: [PATCH 01/13] PM: Add wake lock?api.)
Date: Tue, 10 Feb 2009 06:10:24 -0600 [thread overview]
Message-ID: <13B9B4C6EF24D648824FF11BE8967162037705B6E9@dlee02.ent.ti.com> (raw)
In-Reply-To: <20090210111749.GC4636@atrey.karlin.mff.cuni.cz>
> From: linux-pm-bounces@lists.linux-foundation.org [mailto:linux-pm-
> bounces@lists.linux-foundation.org] On Behalf Of Pavel Machek
> Sent: Tuesday, February 10, 2009 5:18 AM
> Plus I don't like that any application select-ing on input device can
> prevent system from sleeping. That's quite a unexpected sideeffect.
Not sure this is your point. But when doing PowerTop based debug in our Linux userspace we found several applications using select() (or some variant) with a much short timeout than needed. In effect they were polling and keeping the system alive.
In the cases it was an application in our control we converted it to something sane.
Regards,
Richard W.
next prev parent reply other threads:[~2009-02-10 12:10 UTC|newest]
Thread overview: 192+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-05 2:50 [RFC][PATCH 00/11] Android PM extensions Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 01/13] PM: Add wake lock api Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 02/13] PM: Add early suspend api Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 03/13] PM: Implement wakelock api Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 04/13] PM: wakelock: Override wakelocks when using /sys/power/state Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 05/13] PM: Add option to disable /sys/power/state interface Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 06/13] PM: Implement early suspend api Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 07/13] PM: wakelock: Add /sys/power/request_state Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 08/13] PM: Add user-space wake lock api Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 09/13] PM: wakelock: Abort task freezing if a wake lock is held Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 10/13] PM: earlysuspend: Add console switch when user requested sleep state changes Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 11/13] PM: earlysuspend: Removing dependence on console Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 12/13] Input: Hold wake lock while event queue is not empty Arve Hjønnevåg
2009-02-05 2:50 ` [PATCH 13/13] ledtrig-sleep: Add led trigger for sleep debugging Arve Hjønnevåg
2009-02-05 9:08 ` [PATCH 12/13] Input: Hold wake lock while event queue is not empty Pavel Machek
2009-02-05 9:06 ` [PATCH 11/13] PM: earlysuspend: Removing dependence on console Pavel Machek
2009-02-05 9:42 ` Arve Hjønnevåg
2009-02-05 9:53 ` Pavel Machek
2009-02-05 9:03 ` [PATCH 10/13] PM: earlysuspend: Add console switch when user requested sleep state changes Pavel Machek
2009-02-05 9:37 ` Arve Hjønnevåg
2009-02-05 9:51 ` Pavel Machek
2009-02-05 10:54 ` Uli Luckas
2009-02-06 2:29 ` Arve Hjønnevåg
2009-02-08 22:02 ` Pavel Machek
2009-02-08 22:53 ` Arve Hjønnevåg
2009-02-08 22:58 ` Pavel Machek
2009-02-05 8:55 ` [PATCH 09/13] PM: wakelock: Abort task freezing if a wake lock is held Pavel Machek
2009-02-05 9:30 ` Arve Hjønnevåg
2009-02-05 9:49 ` Pavel Machek
2009-02-05 9:58 ` Arve Hjønnevåg
2009-02-05 10:02 ` Pavel Machek
2009-02-05 10:08 ` Arve Hjønnevåg
2009-02-06 3:42 ` Arve Hjønnevåg
2009-02-08 23:00 ` Pavel Machek
2009-02-06 0:35 ` mark gross
2009-02-05 8:53 ` [PATCH 08/13] PM: Add user-space wake lock api Pavel Machek
2009-02-05 8:52 ` [PATCH 07/13] PM: wakelock: Add /sys/power/request_state Pavel Machek
2009-02-05 9:25 ` Arve Hjønnevåg
2009-02-05 9:27 ` Pavel Machek
2009-02-07 22:54 ` Rafael J. Wysocki
2009-02-06 0:18 ` [PATCH 06/13] PM: Implement early suspend api mark gross
2009-02-07 22:47 ` Rafael J. Wysocki
2009-02-08 2:32 ` Benjamin Herrenschmidt
2009-02-08 13:33 ` Rafael J. Wysocki
2009-02-05 9:17 ` [PATCH 05/13] PM: Add option to disable /sys/power/state interface Pavel Machek
2009-02-07 22:37 ` Rafael J. Wysocki
2009-02-08 10:33 ` Pavel Machek
2009-02-08 13:50 ` Rafael J. Wysocki
2009-02-08 14:04 ` Brian Swetland
2009-02-08 21:06 ` Pavel Machek
2009-02-08 23:41 ` Rafael J. Wysocki
2009-02-09 1:58 ` Uli Luckas
2009-02-10 0:09 ` Rafael J. Wysocki
2009-02-08 23:40 ` Rafael J. Wysocki
2009-02-08 23:58 ` Arve Hjønnevåg
2009-02-09 0:26 ` Rafael J. Wysocki
2009-02-09 1:35 ` Arve Hjønnevåg
2009-02-09 1:53 ` Brian Swetland
2009-02-09 8:58 ` Pavel Machek
2009-02-09 13:31 ` Brian Swetland
2009-02-10 11:19 ` Pavel Machek
2009-02-09 9:15 ` Pavel Machek
2009-02-09 3:07 ` Alan Stern
2009-02-11 22:26 ` Rafael J. Wysocki
2009-02-09 9:09 ` Pavel Machek
2009-02-12 11:16 ` Matthew Garrett
2009-02-08 21:04 ` Pavel Machek
2009-02-08 21:40 ` Alan Stern
2009-02-08 23:00 ` Arve Hjønnevåg
2009-02-08 23:03 ` Pavel Machek
2009-02-09 0:31 ` Rafael J. Wysocki
2009-02-09 2:11 ` Uli Luckas
2009-02-09 2:24 ` Arve Hjønnevåg
2009-02-09 2:56 ` Uli Luckas
2009-02-09 9:01 ` Pavel Machek
2009-02-10 0:17 ` Rafael J. Wysocki
2009-02-10 9:13 ` Pavel Machek
2009-02-10 14:18 ` Rafael J. Wysocki
2009-02-08 23:41 ` Pavel Machek
2009-02-08 23:44 ` Rafael J. Wysocki
2009-02-08 23:44 ` Rafael J. Wysocki
2009-02-07 22:31 ` [PATCH 04/13] PM: wakelock: Override wakelocks when using /sys/power/state Rafael J. Wysocki
2009-02-05 9:16 ` [PATCH 03/13] PM: Implement wakelock api Pavel Machek
2009-02-05 15:24 ` Alan Stern
2009-02-06 0:10 ` mark gross
2009-02-06 0:38 ` Arve Hjønnevåg
2009-02-07 0:33 ` mark gross
2009-02-07 0:47 ` Arve Hjønnevåg
2009-02-09 18:00 ` mark gross
2009-02-10 20:24 ` Pavel Machek
2009-02-07 22:27 ` Rafael J. Wysocki
2009-02-11 2:52 ` Arve Hjønnevåg
2009-02-05 9:14 ` [PATCH 02/13] PM: Add early suspend api Pavel Machek
2009-02-05 23:26 ` mark gross
2009-02-06 9:33 ` Uli Luckas
2009-02-06 23:26 ` Arve Hjønnevåg
2009-02-07 20:53 ` Rafael J. Wysocki
2009-02-07 23:34 ` Arve Hjønnevåg
2009-02-08 20:59 ` Pavel Machek
2009-02-08 23:59 ` Rafael J. Wysocki
2009-02-05 9:11 ` [PATCH 01/13] PM: Add wake lock api Pavel Machek
2009-02-06 0:28 ` Arve Hjønnevåg
2009-02-06 9:45 ` Uli Luckas
2009-02-08 21:30 ` Pavel Machek
2009-02-08 23:11 ` Arve Hjønnevåg
2009-02-09 9:06 ` Pavel Machek
2009-02-08 22:17 ` non-racy examples, please (was Re: [PATCH 01/13] PM: Add wake lock api.) Pavel Machek
2009-02-08 22:40 ` Arve Hjønnevåg
2009-02-08 23:14 ` Pavel Machek
2009-02-08 23:35 ` Arve Hjønnevåg
2009-02-10 11:15 ` Pavel Machek
2009-02-11 3:12 ` Arve Hjønnevåg
2009-02-09 1:49 ` non-racy examples, please (was Re: [PATCH 01/13] PM: Add wake lock api. ) Uli Luckas
2009-02-10 11:17 ` non-racy examples, please (was Re: [PATCH 01/13] PM: Add wake lock?api.) Pavel Machek
2009-02-10 12:10 ` Woodruff, Richard [this message]
2009-02-10 13:14 ` Pavel Machek
2009-02-10 13:20 ` Woodruff, Richard
2009-02-10 13:42 ` Brian Swetland
2009-02-10 12:35 ` Uli Luckas
2009-02-06 1:32 ` [PATCH 01/13] PM: Add wake lock api mark gross
2009-02-05 22:51 ` mark gross
2009-02-06 0:13 ` Arve Hjønnevåg
2009-02-10 20:25 ` Pavel Machek
2009-02-11 2:11 ` Arve Hjønnevåg
2009-02-11 4:47 ` Brian Swetland
2009-02-11 8:40 ` Uli Luckas
2009-02-11 14:58 ` Alan Stern
2009-02-11 15:45 ` Rafael J. Wysocki
2009-02-08 22:57 ` Pavel Machek
2009-02-11 21:37 ` Pavel Machek
2009-02-11 22:05 ` Alan Stern
2009-02-11 23:55 ` Arve Hjønnevåg
2009-02-12 18:47 ` mark gross
2009-02-07 18:56 ` Rafael J. Wysocki
2009-02-07 22:51 ` Arve Hjønnevåg
2009-02-07 23:25 ` Rafael J. Wysocki
2009-02-08 0:20 ` Arve Hjønnevåg
2009-02-08 21:21 ` Pavel Machek
2009-02-09 0:03 ` Rafael J. Wysocki
2009-02-09 0:15 ` Rafael J. Wysocki
2009-02-09 2:03 ` Arve Hjønnevåg
2009-02-11 22:23 ` Rafael J. Wysocki
2009-02-11 23:42 ` Arve Hjønnevåg
2009-02-12 22:22 ` Rafael J. Wysocki
2009-02-12 23:42 ` Woodruff, Richard
2009-02-13 1:10 ` Matthew Garrett
2009-02-13 2:21 ` Arve Hjønnevåg
2009-02-13 2:40 ` Nigel Cunningham
2009-02-13 3:17 ` Woodruff, Richard
2009-02-13 10:55 ` Uli Luckas
2009-02-13 14:06 ` Matthew Garrett
2009-02-13 14:24 ` Brian Swetland
2009-02-13 14:37 ` Matthew Garrett
2009-02-13 14:46 ` Brian Swetland
2009-02-13 15:07 ` Matthew Garrett
2009-02-13 22:52 ` Rafael J. Wysocki
2009-02-13 16:46 ` Uli Luckas
2009-02-13 17:05 ` Matthew Garrett
2009-02-13 18:13 ` Uli Luckas
2009-02-13 19:14 ` Matthew Garrett
2009-02-13 19:35 ` Uli Luckas
2009-02-13 16:49 ` Uli Luckas
2009-02-13 17:09 ` Matthew Garrett
2009-02-13 18:18 ` Uli Luckas
2009-02-27 13:18 ` Pavel Machek
2009-02-27 14:07 ` Uli Luckas
2009-02-27 20:32 ` Pavel Machek
2009-03-02 13:53 ` Uli Luckas
2009-03-03 14:02 ` Pavel Machek
2009-03-04 13:41 ` Uli Luckas
2009-03-04 14:00 ` Uli Luckas
2009-03-04 14:13 ` Pavel Machek
2009-03-04 14:34 ` Uli Luckas
2009-03-04 17:10 ` Pavel Machek
2009-03-05 17:42 ` Uli Luckas
2009-03-08 8:32 ` Pavel Machek
2009-03-08 12:34 ` Alan Stern
2009-02-13 23:36 ` Arve Hjønnevåg
2009-02-14 0:05 ` Matthew Garrett
2009-02-14 0:50 ` Arve Hjønnevåg
2009-02-14 1:06 ` Matthew Garrett
2009-02-14 1:33 ` Arve Hjønnevåg
2009-02-14 1:49 ` Matthew Garrett
2009-02-14 5:51 ` Arve Hjønnevåg
2009-02-14 20:44 ` Matthew Garrett
2009-02-26 15:04 ` Pavel Machek
2009-02-26 21:11 ` Arve Hjønnevåg
2009-02-26 21:36 ` Pavel Machek
2009-02-27 0:16 ` Arve Hjønnevåg
2009-02-27 9:56 ` Pavel Machek
2009-02-28 3:20 ` Arve Hjønnevåg
2009-02-06 23:51 ` [RFC][PATCH 00/11] Android PM extensions Rafael J. Wysocki
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