From: Pavel Machek <pavel@ucw.cz>
To: Arve Hj?nnev?g <arve@android.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Alan Stern <stern@rowland.harvard.edu>,
"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, 1 Mar 2009 23:56:47 +0100 [thread overview]
Message-ID: <20090301225647.GE1961@elf.ucw.cz> (raw)
In-Reply-To: <d6200be20902172046sf00599ckc6710c6132d6b92f@mail.gmail.com>
Hi!
> >> > Phase 3: Probably explicit control left to open/close.
> >>
> >> While that's generally a good idea, it's important to recognize that
> >> some devices should be runtime-suspended even while they are open.
> >
> > From the kernel side, yes (and that should be transparent to the user space
> > having them open). By the user space, no.
>
> Allowing user space to suspend input devices while they are still open
> is useful. The user-space code that reads from the input devices does
> not need to know if the device is suspended or not, and the kernel
> cannot auto suspend input devices based on inactivity.
Actually, I'd like you to fix your userspace and close input devices
when it does not need them. Given the way you control the platform it
should not be that hard. I do not see why we'd want to invent new
interface for "uhuh, I have opened the keyboard but I am not really
interested in keys being pressed".
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:[~2009-03-01 22:54 UTC|newest]
Thread overview: 195+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-15 23:10 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
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 [this message]
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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