From: Matthew Garrett <mjg@redhat.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: "Mark Brown" <broonie@opensource.wolfsonmicro.com>,
"Brian Swetland" <swetland@google.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
"Kevin Hilman" <khilman@deeprootsystems.com>,
"Arve Hjønnevåg" <arve@android.com>,
linux-pm@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, "Tejun Heo" <tj@kernel.org>,
"Oleg Nesterov" <oleg@redhat.com>,
"Paul Walmsley" <paul@pwsan.com>,
magnus.damm@gmail.com, "mark gross" <mgross@linux.intel.com>,
"Arjan van de Ven" <arjan@infradead.org>,
"Geoff Smith" <geoffx.smith@intel.com>
Subject: Re: [PATCH 0/8] Suspend block api (version 6)
Date: Wed, 5 May 2010 20:28:11 +0100 [thread overview]
Message-ID: <20100505192811.GA5468@srcf.ucam.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1005051515060.1885-100000@iolanthe.rowland.org>
On Wed, May 05, 2010 at 03:20:40PM -0400, Alan Stern wrote:
> One the face of it, a runtime-PM solution would dictate that the
> codec's driver ought to turn off the codec whenever the driver thinks
> it isn't being used. Ergo, if the driver didn't know when a call was
> in progress, it would use runtime PM to turn off the codec during a
> call.
Well, part of the problem is that right now most of our beliefs about
imposed constraints tend to be based on what userspace is doing - "Don't
power down the audio codec when userspace has it open", for instance.
But that goes away with opportunistic suspend. In most cases you don't
want the audio codec to stay awake just because userspace was using it
to make bouncing cow noises, especially if you've just frozen userspace.
So the problem becomes more complicated than it would otherwise be.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2010-05-05 19:28 UTC|newest]
Thread overview: 324+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-30 22:36 [PATCH 0/8] Suspend block api (version 6) Arve Hjønnevåg
2010-04-30 22:36 ` [PATCH 1/8] PM: Add suspend block api Arve Hjønnevåg
2010-04-30 22:36 ` [PATCH 2/8] PM: suspend_block: Add driver to access suspend blockers from user-space Arve Hjønnevåg
2010-04-30 22:36 ` [PATCH 3/8] PM: suspend_block: Abort task freezing if a suspend_blocker is active Arve Hjønnevåg
2010-04-30 22:36 ` [PATCH 4/8] PM: suspend_block: Add debugfs file Arve Hjønnevåg
2010-04-30 22:36 ` [PATCH 5/8] PM: suspend_block: Add suspend_blocker stats Arve Hjønnevåg
2010-04-30 22:36 ` [PATCH 6/8] PM: Add suspend blocking work Arve Hjønnevåg
2010-04-30 22:37 ` [PATCH 7/8] Input: Block suspend while event queue is not empty Arve Hjønnevåg
2010-04-30 22:37 ` [PATCH 8/8] power_supply: Block suspend while power supply change notifications are pending Arve Hjønnevåg
2010-05-01 6:14 ` [PATCH 6/8] PM: Add suspend blocking work Tejun Heo
2010-05-02 7:05 ` Pavel Machek
2010-05-04 11:16 ` [PATCH 4/8] PM: suspend_block: Add debugfs file Andi Kleen
2010-05-04 21:06 ` Arve Hjønnevåg
2010-05-02 6:57 ` [PATCH 3/8] PM: suspend_block: Abort task freezing if a suspend_blocker is active Pavel Machek
2010-05-02 7:04 ` [PATCH 2/8] PM: suspend_block: Add driver to access suspend blockers from user-space Pavel Machek
2010-05-02 21:23 ` Rafael J. Wysocki
2010-05-02 21:56 ` Alan Stern
2010-05-03 15:03 ` Rafael J. Wysocki
2010-05-03 21:26 ` Arve Hjønnevåg
2010-05-03 21:49 ` Rafael J. Wysocki
2010-05-03 22:01 ` Arve Hjønnevåg
2010-05-04 20:02 ` Rafael J. Wysocki
2010-05-04 4:16 ` Pavel Machek
2010-05-02 6:56 ` [PATCH 1/8] PM: Add suspend block api Pavel Machek
2010-05-02 20:10 ` Rafael J. Wysocki
2010-05-02 20:52 ` Pavel Machek
2010-05-02 21:29 ` Rafael J. Wysocki
2010-05-03 19:01 ` Pavel Machek
2010-05-03 21:38 ` Rafael J. Wysocki
2010-05-03 22:11 ` Alan Stern
2010-05-03 22:24 ` Arve Hjønnevåg
2010-05-02 7:01 ` Pavel Machek
2010-05-04 5:12 ` [linux-pm] " mark gross
2010-05-04 13:59 ` Alan Stern
2010-05-04 16:03 ` mark gross
2010-05-04 17:16 ` Alan Stern
2010-05-05 1:50 ` mark gross
2010-05-05 13:31 ` Matthew Garrett
2010-05-05 20:09 ` mark gross
2010-05-05 20:21 ` Matthew Garrett
2010-05-05 15:44 ` Alan Stern
2010-05-05 20:28 ` mark gross
2010-05-05 21:12 ` Alan Stern
2010-05-05 21:37 ` Brian Swetland
2010-05-05 23:47 ` Tony Lindgren
2010-05-05 23:56 ` Brian Swetland
2010-05-06 0:05 ` Tony Lindgren
2010-05-06 4:16 ` Arve Hjønnevåg
2010-05-06 17:04 ` Tony Lindgren
2010-05-07 0:10 ` Arve Hjønnevåg
2010-05-07 15:54 ` Tony Lindgren
2010-05-28 6:43 ` Pavel Machek
2010-05-28 7:01 ` Arve Hjønnevåg
2010-05-06 13:40 ` Matthew Garrett
2010-05-06 17:01 ` Tony Lindgren
2010-05-06 17:09 ` Matthew Garrett
2010-05-06 17:14 ` Tony Lindgren
2010-05-06 17:22 ` Matthew Garrett
2010-05-06 17:38 ` Tony Lindgren
2010-05-06 17:43 ` Matthew Garrett
2010-05-06 18:33 ` Tony Lindgren
2010-05-06 18:44 ` Matthew Garrett
2010-05-07 2:05 ` Tony Lindgren
2010-05-07 17:12 ` Matthew Garrett
2010-05-07 17:35 ` Tony Lindgren
2010-05-07 17:50 ` Matthew Garrett
2010-05-07 18:01 ` Tony Lindgren
2010-05-07 18:28 ` Matthew Garrett
2010-05-07 18:43 ` Tony Lindgren
2010-05-07 18:46 ` Matthew Garrett
2010-05-07 19:06 ` Daniel Walker
2010-05-07 19:28 ` Tony Lindgren
2010-05-07 19:33 ` Matthew Garrett
2010-05-07 19:55 ` Tony Lindgren
2010-05-07 20:28 ` Matthew Garrett
2010-05-07 20:53 ` Tony Lindgren
2010-05-07 21:03 ` Matthew Garrett
2010-05-07 21:25 ` Tony Lindgren
2010-05-07 21:32 ` Arve Hjønnevåg
2010-05-07 21:39 ` Matthew Garrett
2010-05-07 21:42 ` Tony Lindgren
2010-05-07 21:48 ` Matthew Garrett
2010-05-07 22:00 ` Tony Lindgren
2010-05-07 22:28 ` Matthew Garrett
2010-05-07 21:30 ` Daniel Walker
2010-05-07 21:35 ` Arve Hjønnevåg
2010-05-07 21:43 ` Daniel Walker
2010-05-07 21:38 ` Matthew Garrett
2010-05-06 18:47 ` Alan Stern
2010-05-07 2:20 ` Tony Lindgren
2010-05-28 13:29 ` Pavel Machek
2010-05-28 13:42 ` Brian Swetland
2010-05-06 17:35 ` Daniel Walker
2010-05-06 18:36 ` Tony Lindgren
2010-05-06 19:11 ` Daniel Walker
2010-05-07 2:00 ` Tony Lindgren
2010-05-07 17:20 ` Daniel Walker
2010-05-07 17:36 ` Matthew Garrett
2010-05-07 17:40 ` Daniel Walker
2010-05-07 17:51 ` Matthew Garrett
2010-05-07 18:00 ` Daniel Walker
2010-05-07 18:17 ` Tony Lindgren
2010-05-07 17:50 ` Tony Lindgren
2010-05-07 3:45 ` mgross
2010-05-07 3:45 ` mgross
2010-05-07 4:10 ` Arve Hjønnevåg
2010-05-04 20:40 ` Arve Hjønnevåg
2010-05-03 16:40 ` [PATCH 0/8] Suspend block api (version 6) Kevin Hilman
2010-05-03 17:12 ` Alan Stern
2010-05-03 18:17 ` Kevin Hilman
2010-05-03 18:07 ` Mark Brown
2010-05-03 21:18 ` Rafael J. Wysocki
2010-05-03 23:37 ` Kevin Hilman
2010-05-04 0:09 ` Arve Hjønnevåg
2010-05-04 0:43 ` Brian Swetland
2010-05-04 13:59 ` Mark Brown
2010-05-04 18:06 ` Kevin Hilman
2010-05-04 19:06 ` Mark Brown
2010-05-04 20:37 ` Rafael J. Wysocki
2010-05-04 23:14 ` Kevin Hilman
2010-05-04 23:42 ` Rafael J. Wysocki
2010-05-04 20:23 ` Rafael J. Wysocki
2010-05-04 20:44 ` Rafael J. Wysocki
2010-05-04 23:56 ` Mark Brown
2010-05-05 0:22 ` Rafael J. Wysocki
2010-05-05 1:11 ` Brian Swetland
2010-05-05 11:06 ` Mark Brown
2010-05-05 12:00 ` Brian Swetland
2010-05-05 13:56 ` Mark Brown
2010-05-05 17:33 ` Matthew Garrett
2010-05-05 18:36 ` Alan Stern
2010-05-05 18:52 ` Matthew Garrett
2010-05-05 19:13 ` Alan Stern
2010-05-05 19:22 ` Matthew Garrett
2010-05-05 19:52 ` Mark Brown
2010-05-05 19:55 ` tytso
2010-05-05 20:26 ` Mark Brown
2010-05-05 20:44 ` Rafael J. Wysocki
2010-05-05 21:57 ` Mark Brown
2010-05-05 22:03 ` Brian Swetland
2010-05-05 22:05 ` Rafael J. Wysocki
2010-05-05 23:09 ` Mark Brown
2010-05-05 23:33 ` Rafael J. Wysocki
2010-05-06 0:21 ` Mark Brown
2010-05-06 0:51 ` Rafael J. Wysocki
2010-05-05 20:02 ` Matthew Garrett
2010-05-05 20:09 ` Mark Brown
2010-05-05 19:39 ` Mark Brown
2010-05-05 20:56 ` Brian Swetland
2010-05-05 23:40 ` Mark Brown
2010-05-06 4:25 ` Arve Hjønnevåg
2010-05-07 10:04 ` Mark Brown
2010-05-07 10:57 ` Arve Hjønnevåg
2010-05-07 11:21 ` Mark Brown
2010-05-07 11:29 ` Theodore Tso
2010-05-07 12:25 ` Mark Brown
2010-05-07 12:37 ` Brian Swetland
2010-05-07 13:30 ` Mark Brown
2010-05-11 18:47 ` Mark Brown
2010-05-07 11:41 ` Arve Hjønnevåg
2010-05-07 14:00 ` Mark Brown
2010-05-05 19:07 ` Mark Brown
2010-05-05 19:20 ` Alan Stern
2010-05-05 19:28 ` Matthew Garrett [this message]
2010-05-05 20:04 ` Alan Stern
2010-05-05 20:15 ` Mark Brown
2010-05-05 20:28 ` Rafael J. Wysocki
2010-05-05 23:03 ` Kevin Hilman
2010-05-05 23:16 ` Rafael J. Wysocki
2010-05-05 23:42 ` Brian Swetland
2010-05-06 14:08 ` Alan Stern
2010-05-06 19:26 ` Rafael J. Wysocki
2010-05-05 18:39 ` Mark Brown
2010-05-05 15:35 ` Alan Stern
2010-05-05 16:27 ` Mark Brown
2010-05-04 18:04 ` Kevin Hilman
2010-05-04 0:43 ` Matthew Garrett
2010-05-04 13:51 ` Alan Stern
2010-05-04 14:53 ` Mark Brown
2010-05-04 15:13 ` Kevin Hilman
2010-05-04 15:27 ` Matthew Garrett
2010-05-06 1:40 ` Magnus Damm
2010-05-04 15:13 ` Kevin Hilman
2010-05-04 15:28 ` Matthew Garrett
2010-05-03 21:50 ` Matthew Garrett
[not found] ` <alpine.DEB.2.00.1005141408260.3348@utopia.booyaka.com>
[not found] ` <20100514203202.GA12409@srcf.ucam.org>
[not found] ` <87aas2azc5.fsf@deeprootsystems.com>
[not found] ` <20100514231510.GG16989@thunk.org>
[not found] ` <87r5laa4oc.fsf@deeprootsystems.com>
[not found] ` <AANLkTilL90pYVlquvMDAEPHj_AraEi9Qzk-0tTjw9Bkx@mail.gmail.com>
2010-05-17 20:07 ` [linux-pm] " Mike Chan
2010-05-17 20:17 ` Vitaly Wool
2010-05-17 21:04 ` Mike Chan
2010-05-17 22:55 ` Kevin Hilman
2010-05-17 23:04 ` Brian Swetland
2010-05-24 18:57 ` Pavel Machek
2010-05-24 19:08 ` Matthew Garrett
2010-05-25 1:16 ` Arve Hjønnevåg
2010-05-26 17:32 ` Pavel Machek
2010-05-05 20:35 ` mark gross
2010-05-10 18:06 ` Kevin Hilman
2010-05-10 20:25 ` Rafael J. Wysocki
2010-05-11 16:12 ` Tony Lindgren
2010-05-11 16:14 ` Matthew Garrett
2010-05-11 16:36 ` Tony Lindgren
2010-05-11 16:45 ` Matthew Garrett
2010-05-11 16:58 ` Tony Lindgren
2010-05-11 17:03 ` Matthew Garrett
2010-05-11 17:24 ` Tony Lindgren
2010-05-11 17:30 ` Matthew Garrett
2010-05-11 17:48 ` Tony Lindgren
2010-05-11 18:01 ` Matthew Garrett
2010-05-11 18:19 ` Rafael J. Wysocki
2010-05-12 1:11 ` Arve Hjønnevåg
2010-05-12 11:22 ` Mark Brown
2010-05-13 3:35 ` [linux-pm] " Paul Walmsley
2010-05-13 12:17 ` Matthew Garrett
2010-05-13 17:33 ` Daniel Walker
2010-05-13 18:17 ` Brian Swetland
2010-05-13 18:25 ` Daniel Walker
2010-05-13 18:36 ` Matthew Garrett
2010-05-13 18:59 ` Daniel Walker
2010-05-13 19:11 ` Matthew Garrett
2010-05-13 19:36 ` Daniel Walker
2010-05-13 19:48 ` Matthew Garrett
2010-05-13 21:11 ` Rafael J. Wysocki
2010-05-13 21:16 ` Daniel Walker
2010-05-13 21:27 ` Rafael J. Wysocki
2010-05-13 21:33 ` Daniel Walker
2010-05-13 21:36 ` Tony Lindgren
2010-05-13 21:54 ` Rafael J. Wysocki
2010-05-13 21:46 ` Greg KH
2010-05-13 22:27 ` Mark Brown
2010-05-13 22:45 ` Greg KH
2010-05-14 0:03 ` Mark Brown
2010-05-13 22:46 ` Rafael J. Wysocki
2010-05-13 23:36 ` Mark Brown
2010-05-13 23:48 ` Brian Swetland
2010-05-14 0:29 ` Mark Brown
2010-05-13 22:33 ` Woodruff, Richard
2010-05-13 22:46 ` Greg KH
2010-05-13 23:06 ` Arve Hjønnevåg
2010-05-13 23:28 ` Brian Swetland
2010-05-14 16:47 ` Daniel Walker
2010-05-13 14:16 ` Alan Stern
2010-05-13 19:17 ` Tony Lindgren
2010-05-13 19:25 ` Matthew Garrett
2010-05-13 19:42 ` Tony Lindgren
2010-05-13 19:53 ` Matthew Garrett
2010-05-13 20:00 ` Tony Lindgren
2010-05-13 20:08 ` Matthew Garrett
2010-05-13 20:23 ` Tony Lindgren
2010-05-13 20:34 ` Matthew Garrett
2010-05-13 21:10 ` Tony Lindgren
2010-05-13 21:21 ` Matthew Garrett
2010-05-13 21:34 ` Tony Lindgren
2010-05-15 19:54 ` Matthew Garrett
2010-05-13 21:21 ` Rafael J. Wysocki
2010-05-13 21:25 ` Tony Lindgren
2010-05-13 21:56 ` Rafael J. Wysocki
2010-05-14 20:41 ` Kevin Hilman
2010-05-14 21:25 ` Rafael J. Wysocki
2010-05-14 21:40 ` Kevin Hilman
2010-05-14 21:50 ` Rafael J. Wysocki
2010-05-14 22:45 ` Kevin Hilman
2010-05-14 22:59 ` Brian Swetland
2010-05-15 2:58 ` Alan Stern
2010-05-15 3:40 ` Brian Swetland
2010-05-15 21:19 ` Alan Stern
2010-05-17 15:40 ` Kevin Hilman
2010-05-17 17:04 ` James Bottomley
2010-05-17 17:47 ` Felipe Balbi
2010-05-17 17:58 ` Matthew Garrett
2010-05-17 18:16 ` Felipe Balbi
2010-05-17 17:59 ` James Bottomley
2010-05-17 18:12 ` Felipe Balbi
2010-05-17 18:26 ` Brian Swetland
2010-05-17 18:39 ` Felipe Balbi
2010-05-17 18:45 ` Brian Swetland
2010-05-17 20:22 ` Rafael J. Wysocki
2010-05-17 18:45 ` Mark Brown
2010-05-17 18:47 ` Mike Chan
2010-05-17 19:24 ` James Bottomley
2010-05-17 19:38 ` Felipe Balbi
2010-05-17 19:39 ` Felipe Balbi
2010-05-17 19:49 ` James Bottomley
2010-05-18 6:40 ` Felipe Balbi
2010-05-18 13:59 ` James Bottomley
2010-05-19 6:59 ` Felipe Balbi
2010-05-19 20:42 ` Rafael J. Wysocki
2010-05-20 4:49 ` Felipe Balbi
2010-05-20 11:27 ` Vladimir Pantelic
2010-05-20 11:29 ` Felipe Balbi
2010-05-20 17:40 ` David Brownell
2010-05-20 18:50 ` Felipe Balbi
2010-05-20 23:08 ` David Brownell
2010-05-20 5:15 ` Florian Mickler
2010-05-20 8:57 ` Felipe Balbi
2010-05-20 8:57 ` Felipe Balbi
2010-05-20 10:05 ` Florian Mickler
2010-05-20 10:15 ` Felipe Balbi
2010-05-17 18:54 ` Kevin Hilman
2010-05-17 17:57 ` Daniel Walker
2010-05-15 20:14 ` Rafael J. Wysocki
2010-05-16 19:44 ` Mark Brown
2010-05-13 22:24 ` tytso
2010-05-13 20:36 ` Daniel Walker
2010-05-14 16:06 ` Kevin Hilman
2010-05-24 21:25 ` Pavel Machek
2010-05-13 21:41 ` Alan Stern
2010-05-13 21:54 ` Tony Lindgren
2010-05-13 22:07 ` Rafael J. Wysocki
2010-05-13 22:26 ` Arve Hjønnevåg
2010-05-13 21:14 ` Rafael J. Wysocki
2010-05-13 21:31 ` Tony Lindgren
2010-05-13 21:57 ` Rafael J. Wysocki
2010-05-13 21:37 ` Alan Stern
2010-05-13 21:47 ` Tony Lindgren
2010-05-13 22:01 ` Alan Stern
2010-05-13 22:08 ` Tony Lindgren
2010-05-13 22:28 ` Rafael J. Wysocki
2010-05-15 2:35 ` Alan Stern
2010-05-15 4:04 ` Arve Hjønnevåg
2010-05-13 22:04 ` Rafael J. Wysocki
2010-05-14 3:25 ` Magnus Damm
2010-05-14 16:18 ` Kevin Hilman
2010-05-15 2:47 ` Alan Stern
2010-05-24 21:24 ` Pavel Machek
[not found] <CEE6BB42CAD6E947908279175AF8470A025A7D7DC4@EXDCVYMBSTM006.EQ1STM.local>
[not found] ` <Pine.LNX.4.44L0.1005261156130.1328-100000@iolanthe.rowland.org>
[not found] ` <CEE6BB42CAD6E947908279175AF8470A025A8206ED@EXDCVYMBSTM006.EQ1STM.local>
2010-05-27 8:04 ` Florian Mickler
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