From: Ray Lee <ray-lk@madrabbit.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>,
Oliver Neukum <oliver@neukum.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Alan Stern <stern@rowland.harvard.edu>,
pm list <linux-pm@lists.linux-foundation.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Magnus Damm <magnus.damm@gmail.com>
Subject: Re: Run-time PM idea (was: Re: [linux-pm] [RFC][PATCH 0/2] PM: Rearrange core suspend code)
Date: Mon, 8 Jun 2009 09:29:34 -0700 [thread overview]
Message-ID: <2c0942db0906080929r31e39fe5w673ed877bb5f4966@mail.gmail.com> (raw)
In-Reply-To: <20090608150603.GB20905@elte.hu>
On Mon, Jun 8, 2009 at 8:06 AM, Ingo Molnar<mingo@elte.hu> wrote:
>
> * Matthew Garrett <mjg59@srcf.ucam.org> wrote:
>> I'd like the kernel to expose this functionality but leave the
>> policy decisions to userland.
>
> The thing is, suspending something that is being used and relied on
> by an app is a _bug_. This is rather fundamental: hardware state and
> usage tracking is _NOT POLICY_.
Yes. But, actual example time: what about the case where completely
turning off a laptop's DVD drive saves extra power, but then also
turns off kernel and userspace notification of a disc being inserted?
One of the Other OS's handles this by having a popup when the battery
gets low, asking if it's okay to turn the drive off. This is part of
what Matthew is talking about here.
WARNING: multiple messages have this Message-ID (diff)
From: Ray Lee <ray-lk@madrabbit.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>,
Oliver Neukum <oliver@neukum.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Alan Stern <stern@rowland.harvard.edu>,
pm list <linux-pm@lists.linux-foundation.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Magnus Damm <magnus.damm@gmail.com>
Subject: Re: Run-time PM idea (was: Re: [linux-pm] [RFC][PATCH 0/2] PM: Rearrange core suspend code)
Date: Mon, 8 Jun 2009 09:29:34 -0700 [thread overview]
Message-ID: <2c0942db0906080929r31e39fe5w673ed877bb5f4966@mail.gmail.com> (raw)
In-Reply-To: <20090608150603.GB20905@elte.hu>
On Mon, Jun 8, 2009 at 8:06 AM, Ingo Molnar<mingo@elte.hu> wrote:
>
> * Matthew Garrett <mjg59@srcf.ucam.org> wrote:
>> I'd like the kernel to expose this functionality but leave the
>> policy decisions to userland.
>
> The thing is, suspending something that is being used and relied on
> by an app is a _bug_. This is rather fundamental: hardware state and
> usage tracking is _NOT POLICY_.
Yes. But, actual example time: what about the case where completely
turning off a laptop's DVD drive saves extra power, but then also
turns off kernel and userspace notification of a disc being inserted?
One of the Other OS's handles this by having a popup when the battery
gets low, asking if it's okay to turn the drive off. This is part of
what Matthew is talking about here.
next prev parent reply other threads:[~2009-06-08 16:29 UTC|newest]
Thread overview: 199+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-06 22:54 [RFC][PATCH 0/2] PM: Rearrange core suspend code Rafael J. Wysocki
2009-06-06 22:55 ` [RFC][PATCH 1/2] PM: Separate suspend to RAM functionality from core Rafael J. Wysocki
2009-06-06 22:55 ` Rafael J. Wysocki
2009-06-08 6:36 ` Pavel Machek
2009-06-08 6:36 ` Pavel Machek
2009-06-06 22:56 ` [RFC][PATCH 2/2] PM/Hibernate: Rename disk.c to hibernate.c Rafael J. Wysocki
2009-06-06 22:56 ` Rafael J. Wysocki
2009-06-08 6:37 ` Pavel Machek
2009-06-08 6:37 ` Pavel Machek
2009-06-07 20:51 ` [RFC][PATCH 0/2] PM: Rearrange core suspend code Alan Stern
2009-06-07 20:51 ` [linux-pm] " Alan Stern
2009-06-07 21:46 ` Run-time PM idea (was: Re: [RFC][PATCH 0/2] PM: Rearrange core suspend code) Rafael J. Wysocki
2009-06-07 21:46 ` Run-time PM idea (was: Re: [linux-pm] " Rafael J. Wysocki
2009-06-07 22:02 ` Run-time PM idea (was: " Oliver Neukum
2009-06-07 22:02 ` Run-time PM idea (was: Re: [linux-pm] " Oliver Neukum
2009-06-07 22:02 ` Oliver Neukum
2009-06-07 22:05 ` Run-time PM idea (was: " Oliver Neukum
2009-06-07 22:05 ` [linux-pm] " Oliver Neukum
2009-06-08 11:29 ` Rafael J. Wysocki
2009-06-08 11:29 ` [linux-pm] " Rafael J. Wysocki
2009-06-08 12:04 ` Oliver Neukum
2009-06-08 18:34 ` Rafael J. Wysocki
2009-06-09 7:25 ` Oliver Neukum
2009-06-09 7:25 ` [linux-pm] " Oliver Neukum
2009-06-09 14:33 ` Alan Stern
2009-06-09 14:33 ` [linux-pm] " Alan Stern
2009-06-09 14:33 ` Alan Stern
2009-06-09 14:48 ` Oliver Neukum
2009-06-09 14:48 ` Oliver Neukum
2009-06-09 14:48 ` Oliver Neukum
2009-06-09 22:44 ` [linux-pm] " Rafael J. Wysocki
2009-06-09 22:44 ` Rafael J. Wysocki
2009-06-08 18:34 ` Rafael J. Wysocki
2009-06-08 12:04 ` Oliver Neukum
2009-06-08 20:35 ` Alan Stern
2009-06-08 20:35 ` [linux-pm] " Alan Stern
2009-06-08 20:35 ` Alan Stern
2009-06-08 21:31 ` Rafael J. Wysocki
2009-06-09 2:49 ` Alan Stern
2009-06-09 2:49 ` Alan Stern
2009-06-09 22:57 ` Rafael J. Wysocki
2009-06-10 8:29 ` [patch update] " Rafael J. Wysocki
2009-06-10 8:29 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-10 14:20 ` [patch update] " Oliver Neukum
2009-06-10 14:20 ` [patch update] Re: [linux-pm] " Oliver Neukum
2009-06-10 19:27 ` Rafael J. Wysocki
2009-06-10 21:38 ` Oliver Neukum
2009-06-10 21:38 ` Oliver Neukum
2009-06-10 22:01 ` [patch update] " Rafael J. Wysocki
2009-06-10 22:01 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-10 23:07 ` Oliver Neukum
2009-06-10 23:07 ` Oliver Neukum
2009-06-10 23:42 ` [patch update] " Alan Stern
2009-06-10 23:42 ` [patch update] Re: [linux-pm] " Alan Stern
2009-06-10 23:42 ` Alan Stern
2009-06-11 13:48 ` Rafael J. Wysocki
2009-06-11 13:57 ` [patch update] " Oliver Neukum
2009-06-11 13:57 ` [patch update] Re: [linux-pm] " Oliver Neukum
2009-06-11 14:16 ` [patch update] " Alan Stern
2009-06-11 14:16 ` [patch update] Re: [linux-pm] " Alan Stern
2009-06-11 14:16 ` Alan Stern
2009-06-11 19:38 ` [patch update] " Rafael J. Wysocki
2009-06-11 19:38 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-11 13:48 ` [patch update] " Rafael J. Wysocki
2009-06-11 13:46 ` Rafael J. Wysocki
2009-06-11 13:46 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-10 23:07 ` [patch update] " Oliver Neukum
2009-06-10 21:38 ` Oliver Neukum
2009-06-10 19:27 ` Rafael J. Wysocki
2009-06-10 21:14 ` Alan Stern
2009-06-10 21:14 ` [patch update] Re: [linux-pm] " Alan Stern
2009-06-10 21:31 ` [patch update] " Rafael J. Wysocki
2009-06-10 21:31 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-10 23:15 ` [patch update] " Oliver Neukum
2009-06-10 23:15 ` [patch update] Re: [linux-pm] " Oliver Neukum
2009-06-10 23:15 ` Oliver Neukum
2009-06-11 5:27 ` [patch update] " Magnus Damm
2009-06-11 5:27 ` [patch update] Re: [linux-pm] " Magnus Damm
2009-06-11 5:27 ` Magnus Damm
2009-06-10 23:42 ` Alan Stern
2009-06-11 14:17 ` [patch update] " Rafael J. Wysocki
2009-06-11 14:17 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-11 14:52 ` [patch update] " Alan Stern
2009-06-11 14:52 ` [patch update] Re: [linux-pm] " Alan Stern
2009-06-11 15:06 ` Oliver Neukum
2009-06-11 15:06 ` Oliver Neukum
2009-06-11 15:22 ` Alan Stern
2009-06-11 15:22 ` Alan Stern
2009-06-11 16:05 ` Oliver Neukum
2009-06-11 16:05 ` Oliver Neukum
2009-06-11 18:36 ` [patch update] " Alan Stern
2009-06-11 18:36 ` [patch update] Re: [linux-pm] " Alan Stern
2009-06-11 18:36 ` Alan Stern
2009-06-11 21:05 ` [patch update] " Oliver Neukum
2009-06-11 21:05 ` [patch update] Re: [linux-pm] " Oliver Neukum
2009-06-11 21:05 ` Oliver Neukum
2009-06-12 2:16 ` Alan Stern
2009-06-12 2:16 ` Alan Stern
2009-06-12 8:15 ` Oliver Neukum
2009-06-12 14:32 ` [patch update] " Alan Stern
2009-06-12 14:32 ` [patch update] Re: [linux-pm] " Alan Stern
2009-06-12 14:32 ` Alan Stern
2009-06-12 19:09 ` [patch update] " Rafael J. Wysocki
2009-06-12 19:09 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-12 19:48 ` Alan Stern
2009-06-12 19:56 ` [patch update] " Rafael J. Wysocki
2009-06-12 19:56 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-12 21:23 ` Alan Stern
2009-06-12 23:06 ` [patch update] " Rafael J. Wysocki
2009-06-12 23:06 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-13 18:08 ` [patch update] " Alan Stern
2009-06-13 18:08 ` [patch update] Re: [linux-pm] " Alan Stern
2009-06-13 22:04 ` [patch update] " Rafael J. Wysocki
2009-06-13 22:04 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-12 21:23 ` [patch update] " Alan Stern
2009-06-12 19:48 ` Alan Stern
2009-06-12 8:15 ` Oliver Neukum
2009-06-12 2:16 ` Alan Stern
2009-06-11 16:05 ` Oliver Neukum
2009-06-11 15:22 ` Alan Stern
2009-06-11 15:06 ` Oliver Neukum
2009-06-11 19:43 ` Rafael J. Wysocki
2009-06-11 19:43 ` [patch update] Re: [linux-pm] " Rafael J. Wysocki
2009-06-12 14:25 ` [patch update] " Alan Stern
2009-06-12 14:25 ` [patch update] Re: [linux-pm] " Alan Stern
2009-06-10 23:42 ` [patch update] " Alan Stern
2009-06-11 5:18 ` [patch update] Re: [linux-pm] " Magnus Damm
2009-06-11 5:18 ` Magnus Damm
2009-06-11 9:08 ` Oliver Neukum
2009-06-12 3:13 ` [patch update] " Magnus Damm
2009-06-12 3:13 ` [patch update] Re: [linux-pm] " Magnus Damm
2009-06-12 8:11 ` Oliver Neukum
2009-06-12 10:54 ` [patch update] " Magnus Damm
2009-06-12 10:54 ` [patch update] Re: [linux-pm] " Magnus Damm
2009-06-12 10:54 ` Magnus Damm
2009-06-12 8:11 ` [patch update] " Oliver Neukum
2009-06-11 9:08 ` Oliver Neukum
2009-06-11 5:18 ` Magnus Damm
2009-06-10 20:48 ` [linux-pm] " Alan Stern
2009-06-10 20:48 ` Alan Stern
2009-06-10 21:15 ` Rafael J. Wysocki
2009-06-10 21:15 ` [linux-pm] " Rafael J. Wysocki
2009-06-10 20:48 ` Alan Stern
2009-06-09 22:57 ` Rafael J. Wysocki
2009-06-09 2:49 ` Alan Stern
2009-06-09 7:31 ` [linux-pm] " Oliver Neukum
2009-06-09 7:31 ` Oliver Neukum
2009-06-09 23:02 ` Rafael J. Wysocki
2009-06-09 23:02 ` [linux-pm] " Rafael J. Wysocki
2009-06-09 7:31 ` Oliver Neukum
2009-06-08 21:31 ` Rafael J. Wysocki
2009-06-08 6:54 ` Ingo Molnar
2009-06-08 6:54 ` Run-time PM idea (was: Re: [linux-pm] " Ingo Molnar
2009-06-08 11:30 ` Rafael J. Wysocki
2009-06-08 13:05 ` Ingo Molnar
2009-06-08 13:11 ` Matthew Garrett
2009-06-08 13:22 ` Run-time PM idea (was: " Ingo Molnar
2009-06-08 13:22 ` Run-time PM idea (was: Re: [linux-pm] " Ingo Molnar
2009-06-08 13:32 ` Matthew Garrett
2009-06-08 13:46 ` Run-time PM idea (was: " Ingo Molnar
2009-06-08 13:46 ` Run-time PM idea (was: Re: [linux-pm] " Ingo Molnar
2009-06-08 13:54 ` Run-time PM idea (was: " Matthew Garrett
2009-06-08 13:54 ` Run-time PM idea (was: Re: [linux-pm] " Matthew Garrett
2009-06-08 14:24 ` Run-time PM idea (was: " Ingo Molnar
2009-06-08 14:24 ` Run-time PM idea (was: Re: [linux-pm] " Ingo Molnar
2009-06-08 14:35 ` Run-time PM idea (was: " Matthew Garrett
2009-06-08 14:35 ` Run-time PM idea (was: Re: [linux-pm] " Matthew Garrett
2009-06-08 14:44 ` Run-time PM idea (was: " Ingo Molnar
2009-06-08 14:44 ` Run-time PM idea (was: Re: [linux-pm] " Ingo Molnar
2009-06-08 14:51 ` Matthew Garrett
2009-06-24 15:03 ` Run-time PM idea (was: " Pavel Machek
2009-06-24 15:03 ` Run-time PM idea (was: Re: [linux-pm] " Pavel Machek
2009-06-08 14:51 ` Run-time PM idea (was: " Matthew Garrett
2009-06-19 1:50 ` Robert Hancock
2009-06-19 1:50 ` Robert Hancock
2009-06-08 13:58 ` Oliver Neukum
2009-06-08 13:58 ` Run-time PM idea (was: Re: [linux-pm] " Oliver Neukum
2009-06-08 13:58 ` Oliver Neukum
2009-06-08 13:32 ` Run-time PM idea (was: " Matthew Garrett
2009-06-08 13:39 ` Oliver Neukum
2009-06-08 13:39 ` Run-time PM idea (was: Re: [linux-pm] " Oliver Neukum
2009-06-08 13:44 ` Run-time PM idea (was: " Matthew Garrett
2009-06-08 13:44 ` Run-time PM idea (was: Re: [linux-pm] " Matthew Garrett
2009-06-08 14:21 ` Ingo Molnar
2009-06-08 14:30 ` Matthew Garrett
2009-06-08 15:06 ` Run-time PM idea (was: " Ingo Molnar
2009-06-08 15:06 ` Run-time PM idea (was: Re: [linux-pm] " Ingo Molnar
2009-06-08 15:11 ` Matthew Garrett
2009-06-08 15:11 ` Run-time PM idea (was: " Matthew Garrett
2009-06-08 16:29 ` Ray Lee
2009-06-08 16:29 ` Ray Lee [this message]
2009-06-08 16:29 ` Run-time PM idea (was: Re: [linux-pm] " Ray Lee
2009-06-08 14:30 ` Run-time PM idea (was: " Matthew Garrett
2009-06-09 22:44 ` Jiri Kosina
2009-06-09 22:44 ` Run-time PM idea (was: Re: [linux-pm] " Jiri Kosina
2009-06-08 14:21 ` Run-time PM idea (was: " Ingo Molnar
2009-06-08 13:11 ` Matthew Garrett
2009-06-08 13:05 ` Ingo Molnar
2009-06-08 11:30 ` Rafael J. Wysocki
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