From: Arjan van de Ven <arjan@infradead.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "Arve Hjønnevåg" <arve@android.com>,
"Ingo Molnar" <mingo@elte.hu>,
tytso@mit.edu, "Brian Swetland" <swetland@google.com>,
"Neil Brown" <neilb@suse.de>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
"Alan Stern" <stern@rowland.harvard.edu>,
"Felipe Balbi" <felipe.balbi@nokia.com>,
LKML <linux-kernel@vger.kernel.org>,
"Florian Mickler" <florian@mickler.org>,
"Linux OMAP Mailing List" <linux-omap@vger.kernel.org>,
"Linux PM" <linux-pm@lists.linux-foundation.org>,
"Alan Cox" <alan@lxorguk.ukuu.org.uk>,
"James Bottomley" <James.Bottomley@suse.de>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Kevin Hilman" <khilman@deeprootsystems.com>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: suspend blockers & Android integration
Date: Sat, 5 Jun 2010 09:28:51 -0700 [thread overview]
Message-ID: <20100605092851.6ee15f13@infradead.org> (raw)
In-Reply-To: <1275731653.27810.41078.camel@twins>
On Sat, 05 Jun 2010 11:54:13 +0200
Peter Zijlstra <peterz@infradead.org> wrote:
> On Fri, 2010-06-04 at 17:10 -0700, Arve Hjønnevåg wrote:
> > > Trusted processes are assumed to be sane and idle when there is
> > > nothing for them to do, allowing the machine to go into deep idle
> > > states.
> > >
> >
> > Neither the kernel nor our trusted user-space code currently meets
> > this criteria.
>
> Then both need fixing. Really, that's the only sane approach.
fwiw... in MeeGo we're seeing quite good idle times (> 1 seconds)
without really bad hacks.
the kernel has a set of infrastructure already to help here (range
timers, with which you can wakeup-limit untrusted userspace crap),
timer slack for legacy background timers, etc etc.
getting to 10 seconds is not in the range of impossibilities to be
honest... and that's even without doing things like putting untrusted
junk (read: Appstore apps) into a cgroup and do wakeup limiting and cpu
time limiting on a cgroup level....
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
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next prev parent reply other threads:[~2010-06-05 16:26 UTC|newest]
Thread overview: 195+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-03 19:30 suspend blockers & Android integration Ingo Molnar
2010-06-03 19:50 ` Brian Swetland
2010-06-04 7:57 ` Ingo Molnar
2010-06-04 8:29 ` Brian Swetland
2010-06-04 8:55 ` Ingo Molnar
2010-06-04 9:03 ` Pekka Enberg
2010-06-04 9:08 ` Brian Swetland
2010-06-04 9:59 ` Ingo Molnar
2010-06-04 10:09 ` Brian Swetland
2010-06-04 14:24 ` James Bottomley
2010-06-04 15:07 ` Florian Mickler
2010-06-06 8:04 ` david
2010-06-10 13:58 ` Pavel Machek
2010-06-11 4:21 ` [linux-pm] " David Brownell
2010-06-11 14:28 ` James Bottomley
2010-06-11 14:46 ` Alan Stern
2010-06-11 15:01 ` Mark Brown
2010-06-11 15:02 ` James Bottomley
2010-06-11 20:48 ` Alan Stern
2010-06-11 21:04 ` James Bottomley
2010-06-12 17:10 ` Mark Brown
2010-06-12 2:43 ` David Brownell
2010-06-11 14:42 ` Alan Stern
[not found] ` <20100603231153.GA11302@elte.hu>
2010-06-03 23:23 ` Ingo Molnar
2010-06-03 23:37 ` Linus Torvalds
2010-06-03 23:46 ` Ingo Molnar
2010-06-04 2:16 ` Linus Torvalds
2010-06-04 2:26 ` Linus Torvalds
2010-06-04 3:45 ` Arjan van de Ven
2010-06-04 4:46 ` Linus Torvalds
2010-06-04 10:42 ` Andi Kleen
2010-06-04 8:15 ` Ingo Molnar
2010-06-06 8:16 ` david
2010-06-06 8:23 ` david
2010-06-04 3:45 ` Arve Hjønnevåg
2010-06-04 6:22 ` Ingo Molnar
2010-06-04 8:11 ` Ingo Molnar
2010-06-05 20:37 ` Florian Mickler
2010-06-04 0:39 ` Ingo Molnar
2010-06-04 14:50 ` Alan Stern
2010-06-04 4:38 ` Neil Brown
2010-06-04 4:54 ` Arve Hjønnevåg
2010-06-04 7:13 ` Ingo Molnar
2010-06-04 7:37 ` Arve Hjønnevåg
2010-06-04 8:34 ` Ingo Molnar
2010-06-04 8:56 ` Arve Hjønnevåg
2010-06-04 12:06 ` Peter Zijlstra
2010-06-05 0:10 ` Arve Hjønnevåg
2010-06-05 9:54 ` Peter Zijlstra
2010-06-05 16:28 ` Arjan van de Ven [this message]
2010-06-05 21:26 ` Arve Hjønnevåg
2010-06-05 22:23 ` Arjan van de Ven
2010-06-05 22:26 ` Brian Swetland
2010-06-05 22:48 ` Arjan van de Ven
2010-06-05 23:45 ` Thomas Gleixner
2010-06-06 0:34 ` Arve Hjønnevåg
2010-06-05 22:52 ` Rafael J. Wysocki
2010-06-05 22:39 ` Arve Hjønnevåg
2010-06-05 23:34 ` Arjan van de Ven
2010-06-06 0:02 ` Arve Hjønnevåg
2010-06-06 11:18 ` Felipe Contreras
2010-06-06 11:26 ` david
2010-06-06 7:52 ` [linux-pm] " Vitaly Wool
2010-06-06 8:20 ` Brian Swetland
2010-06-06 8:32 ` Vitaly Wool
2010-06-06 9:21 ` Brian Swetland
2010-06-06 9:56 ` david
2010-06-06 11:11 ` Felipe Contreras
2010-06-06 10:00 ` Vitaly Wool
2010-06-06 10:12 ` david
2010-06-06 10:19 ` [linux-pm] " Vitaly Wool
2010-06-06 10:49 ` Florian Mickler
2010-06-06 10:57 ` Vitaly Wool
2010-06-06 11:14 ` [linux-pm] " david
2010-06-07 12:16 ` Florian Mickler
2010-06-09 1:14 ` david
2010-06-09 3:46 ` Linus Torvalds
2010-06-09 7:43 ` [linux-pm] " Felipe Contreras
2010-06-09 9:40 ` Rafael J. Wysocki
2010-06-09 22:04 ` Neil Brown
2010-06-10 8:59 ` Rafael J. Wysocki
2010-06-10 12:00 ` Neil Brown
2010-06-10 16:06 ` Rafael J. Wysocki
2010-06-10 13:57 ` Mark Brown
2010-06-10 15:46 ` Rafael J. Wysocki
2010-06-10 19:01 ` Mark Brown
2010-06-10 14:47 ` Alan Stern
2010-06-10 15:44 ` Rafael J. Wysocki
2010-06-06 10:46 ` Florian Mickler
2010-06-06 11:05 ` Alan Cox
2010-06-06 13:34 ` Matthew Garrett
2010-06-06 14:31 ` James Bottomley
2010-06-06 15:46 ` [linux-pm] " Thomas Gleixner
2010-06-06 17:08 ` James Bottomley
2010-06-06 18:04 ` Thomas Gleixner
2010-06-06 18:44 ` Brian Swetland
2010-06-06 19:26 ` Thomas Gleixner
2010-06-06 19:05 ` [linux-pm] " Christoph Hellwig
2010-06-06 19:15 ` Brian Swetland
2010-06-06 19:24 ` [linux-pm] " Christoph Hellwig
2010-06-06 19:58 ` Brian Swetland
2010-06-06 22:26 ` Thomas Gleixner
2010-06-07 8:00 ` Christoph Hellwig
2010-06-07 8:03 ` Christoph Hellwig
2010-06-07 8:16 ` Brian Swetland
2010-06-07 13:20 ` Peter Zijlstra
2010-06-07 18:40 ` David Brownell
2010-06-07 23:17 ` Linus Walleij
2010-06-07 23:37 ` Brian Swetland
2010-06-08 2:15 ` Valdis.Kletnieks
2010-06-09 12:33 ` [linux-pm] " Mark Brown
2010-07-09 19:11 ` HTC Dream drivers was " Pavel Machek
2010-06-06 13:31 ` Matthew Garrett
2010-06-06 15:26 ` Vitaly Wool
2010-06-06 15:29 ` Matthew Garrett
2010-06-06 15:47 ` Vitaly Wool
2010-06-06 16:43 ` Matthew Garrett
2010-06-06 17:21 ` Vitaly Wool
2010-06-06 17:31 ` Matthew Garrett
2010-06-06 19:01 ` Rafael J. Wysocki
2010-06-07 10:25 ` Felipe Contreras
2010-06-07 13:01 ` Florian Mickler
2010-06-07 0:01 ` Alan Stern
2010-06-07 1:07 ` [linux-pm] suspend blockers & Android integrationy Thomas Gleixner
2010-06-07 14:42 ` Alan Stern
2010-06-07 15:49 ` Thomas Gleixner
2010-06-07 15:56 ` [linux-pm] suspend blockers & Android integration Florian Mickler
2010-06-08 0:57 ` Arve Hjønnevåg
2010-06-08 1:13 ` Alan Stern
2010-06-04 9:43 ` Peter Zijlstra
2010-06-04 9:54 ` Peter Zijlstra
2010-06-04 10:03 ` Ingo Molnar
2010-06-04 10:08 ` Peter Zijlstra
2010-06-04 10:11 ` Brian Swetland
2010-06-04 10:11 ` Thomas Gleixner
2010-06-04 10:13 ` Peter Zijlstra
2010-06-04 23:38 ` Rafael J. Wysocki
2010-06-05 0:05 ` Thomas Gleixner
2010-06-05 0:39 ` Arve Hjønnevåg
2010-06-05 1:18 ` Matt Helsley
2010-06-05 5:35 ` Arve Hjønnevåg
2010-06-05 18:25 ` Rafael J. Wysocki
2010-06-05 22:10 ` Arve Hjønnevåg
2010-06-05 23:03 ` Rafael J. Wysocki
2010-06-06 1:03 ` Arve Hjønnevåg
2010-06-06 2:49 ` Alan Stern
2010-06-06 11:09 ` [linux-pm] " Alan Stern
2010-06-08 0:23 ` Arve Hjønnevåg
2010-06-08 1:09 ` Alan Stern
2010-06-08 1:31 ` Arve Hjønnevåg
2010-06-08 2:32 ` Alan Stern
2010-06-08 3:05 ` Arve Hjønnevåg
2010-06-08 10:19 ` Florian Mickler
2010-06-08 14:50 ` Alan Stern
2010-06-09 1:48 ` Arve Hjønnevåg
2010-06-09 15:29 ` Alan Stern
2010-06-09 23:42 ` Arve Hjønnevåg
2010-06-10 4:21 ` david
2010-06-10 4:51 ` Arve Hjønnevåg
2010-06-10 5:10 ` Neil Brown
2010-06-10 14:39 ` Alan Stern
2010-06-10 14:28 ` Alan Stern
2010-06-10 23:02 ` Arve Hjønnevåg
2010-06-11 1:44 ` Alan Stern
2010-06-11 3:16 ` Arve Hjønnevåg
2010-06-11 14:33 ` Alan Stern
2010-06-11 22:18 ` Arve Hjønnevåg
2010-06-12 15:22 ` [linux-pm] " Alan Stern
2010-06-07 23:16 ` Arve Hjønnevåg
2010-06-06 13:29 ` Rafael J. Wysocki
2010-06-05 1:33 ` Thomas Gleixner
2010-06-05 5:23 ` Arve Hjønnevåg
2010-06-05 16:47 ` Thomas Gleixner
2010-06-05 21:47 ` Arve Hjønnevåg
2010-06-05 22:11 ` Thomas Gleixner
2010-06-05 23:21 ` Arve Hjønnevåg
2010-06-05 23:39 ` Rafael J. Wysocki
2010-06-06 0:04 ` Thomas Gleixner
2010-06-06 1:16 ` Arve Hjønnevåg
2010-06-06 10:36 ` Thomas Gleixner
2010-06-06 14:43 ` Matt Helsley
2010-06-08 0:45 ` Arve Hjønnevåg
2010-06-07 23:34 ` Arve Hjønnevåg
2010-06-06 10:56 ` Thomas Gleixner
2010-06-08 0:05 ` Arve Hjønnevåg
2010-06-06 0:19 ` Thomas Gleixner
2010-06-06 1:24 ` Arve Hjønnevåg
2010-06-06 0:32 ` Thomas Gleixner
2010-06-06 1:45 ` Arve Hjønnevåg
2010-06-06 10:01 ` Thomas Gleixner
2010-06-05 22:44 ` Rafael J. Wysocki
2010-06-05 23:56 ` Arve Hjønnevåg
2010-06-06 13:55 ` Rafael J. Wysocki
2010-06-08 0:39 ` Arve Hjønnevåg
2010-06-08 9:11 ` Rafael J. Wysocki
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