From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Linus Torvalds <torvalds@osdl.org>
Cc: David Brownell <david-b@pacbell.net>,
linux-pm@lists.osdl.org, Pavel Machek <pavel@ucw.cz>
Subject: Re: [PATCH 2/2] Fix console handling during suspend/resume
Date: Wed, 21 Jun 2006 08:47:45 +1000 [thread overview]
Message-ID: <1150843666.1901.46.camel@localhost.localdomain> (raw)
In-Reply-To: <Pine.LNX.4.64.0606181113000.5498@g5.osdl.org>
> I think the first option is the one that actually works. Right now, to get
> my machine to suspend successfully (with the current broken "suspend
> everything"), I have to turn off the console much much _much_ too early.
> That's what I'm trying to get away from.
I don't think you'll ever get anything stable if you separate freeze and
suspend. I've been implementing working suspend for some time now, and
I've seen it done on other operating systems, and I really think there
is no way out of the very simple fact that suspend is just a superset of
freeze. STD need a freeze pass, STR needs a freeze+suspend pass. You
might want to imagine all sort of reasons why it _would_ be theorically
possible for drivers to recover from STR on resume without having frozen
anything as part of the suspend process but I'm absolutely convinced
that all this will lead to is a suspend process that is even less stable
and more broken than what we have today.
Ben.
next prev parent reply other threads:[~2006-06-20 22:47 UTC|newest]
Thread overview: 348+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-13 21:30 [PATCH 0/2] suspend-to-ram debugging patches Linus Torvalds
2006-06-13 21:35 ` [PATCH 1/2] Add some basic resume trace facilities Linus Torvalds
2006-06-13 22:10 ` Nigel Cunningham
2006-06-13 22:50 ` Linus Torvalds
2006-06-14 10:25 ` Pavel Machek
2006-06-13 21:40 ` [PATCH 2/2] Fix console handling during suspend/resume Linus Torvalds
2006-06-13 23:20 ` David Brownell
2006-06-13 23:46 ` Linus Torvalds
2006-06-14 0:00 ` Nigel Cunningham
2006-06-14 0:06 ` Randy.Dunlap
2006-06-14 0:18 ` Greg KH
2006-06-14 0:29 ` Nigel Cunningham
2006-06-14 0:34 ` Linus Torvalds
2006-06-14 0:29 ` David Brownell
2006-06-14 10:28 ` Pavel Machek
2006-06-14 11:15 ` Nigel Cunningham
2006-06-14 15:28 ` David Brownell
2006-06-14 10:34 ` Pavel Machek
2006-06-14 15:21 ` Linus Torvalds
2006-06-14 17:52 ` Linus Torvalds
2006-06-14 18:09 ` Dave Jones
2006-06-14 18:29 ` Linus Torvalds
2006-06-14 19:13 ` Peter Jones
2006-06-14 19:17 ` Dave Jones
2006-06-14 21:40 ` Pavel Machek
2006-06-14 22:03 ` Linus Torvalds
2006-06-14 22:12 ` Pavel Machek
2006-06-14 22:26 ` Peter Jones
2006-06-14 22:38 ` Linus Torvalds
2006-06-14 22:44 ` Pavel Machek
2006-06-14 22:59 ` Linus Torvalds
2006-06-14 23:57 ` Pavel Machek
2006-06-15 0:07 ` Linus Torvalds
2006-06-15 1:54 ` Nigel Cunningham
2006-06-15 2:48 ` David Brownell
2006-06-15 8:39 ` Pavel Machek
2006-06-15 14:56 ` Alan Stern
2006-06-15 16:14 ` Pavel Machek
2006-06-15 16:26 ` Linus Torvalds
2006-06-15 18:24 ` Pavel Machek
2006-06-15 19:35 ` Linus Torvalds
2006-06-15 20:03 ` Pavel Machek
2006-06-15 20:28 ` Linus Torvalds
2006-06-15 20:43 ` Pavel Machek
2006-06-15 21:04 ` Linus Torvalds
2006-06-15 21:27 ` Pavel Machek
2006-06-15 22:31 ` Linus Torvalds
2006-06-15 23:01 ` Pavel Machek
2006-06-16 4:15 ` Benjamin Herrenschmidt
2006-06-16 13:26 ` Pavel Machek
2006-06-16 23:05 ` Benjamin Herrenschmidt
2006-06-15 16:43 ` David Brownell
2006-06-15 16:52 ` Pavel Machek
2006-06-16 6:02 ` David Brownell
2006-06-15 16:17 ` Pavel Machek
2006-06-15 16:53 ` Linus Torvalds
2006-06-15 16:59 ` Pavel Machek
2006-06-15 17:41 ` Linus Torvalds
2006-06-15 17:51 ` Pavel Machek
2006-06-16 1:09 ` Benjamin Herrenschmidt
2006-06-15 17:04 ` Alan Stern
2006-06-15 22:17 ` Paul Mackerras
2006-06-15 22:24 ` Pavel Machek
2006-06-16 1:17 ` Benjamin Herrenschmidt
2006-06-16 1:15 ` Benjamin Herrenschmidt
2006-06-16 2:28 ` Linus Torvalds
2006-06-16 2:50 ` Nigel Cunningham
2006-06-16 3:22 ` Linus Torvalds
2006-06-16 3:36 ` Nigel Cunningham
2006-06-16 14:03 ` Pavel Machek
2006-06-16 15:53 ` Alan Stern
2006-06-15 1:46 ` David Brownell
2006-06-15 6:00 ` Nigel Cunningham
2006-06-15 16:22 ` David Brownell
2006-06-15 8:41 ` Pavel Machek
2006-06-15 16:57 ` David Brownell
2006-06-15 18:03 ` Pavel Machek
2006-06-15 18:31 ` Linus Torvalds
2006-06-15 19:19 ` Pavel Machek
2006-06-15 19:40 ` Linus Torvalds
2006-06-15 20:30 ` Alan Stern
2006-06-15 20:56 ` Linus Torvalds
2006-06-15 21:10 ` Pavel Machek
2006-06-15 22:01 ` Linus Torvalds
2006-06-15 22:20 ` Pavel Machek
2006-06-15 22:41 ` Linus Torvalds
2006-06-16 13:29 ` Pavel Machek
2006-06-15 22:21 ` Pavel Machek
2006-06-15 22:44 ` Linus Torvalds
2006-06-15 21:27 ` Alan Stern
2006-06-15 22:18 ` Linus Torvalds
2006-06-16 12:49 ` Pavel Machek
2006-06-16 13:22 ` Pavel Machek
2006-06-16 1:31 ` Benjamin Herrenschmidt
2006-06-16 2:53 ` Nigel Cunningham
2006-06-16 3:16 ` Linus Torvalds
2006-06-16 4:04 ` Benjamin Herrenschmidt
2006-06-16 1:26 ` Benjamin Herrenschmidt
2006-06-16 2:36 ` Linus Torvalds
2006-06-16 3:37 ` Benjamin Herrenschmidt
2006-06-16 4:37 ` Linus Torvalds
2006-06-16 6:02 ` Benjamin Herrenschmidt
2006-06-16 13:56 ` Pavel Machek
2006-06-16 1:21 ` Benjamin Herrenschmidt
2006-06-16 2:29 ` Linus Torvalds
2006-06-16 3:33 ` Benjamin Herrenschmidt
2006-06-16 4:35 ` David Brownell
2006-06-16 5:23 ` Linus Torvalds
2006-06-16 6:18 ` Benjamin Herrenschmidt
2006-06-16 13:42 ` Pavel Machek
2006-06-16 16:48 ` David Brownell
2006-06-16 13:58 ` Pavel Machek
2006-06-16 14:04 ` David Brownell
2006-06-16 18:31 ` Linus Torvalds
2006-06-16 18:45 ` Linus Torvalds
2006-06-16 23:04 ` Benjamin Herrenschmidt
2006-06-18 17:16 ` David Brownell
2006-06-16 21:28 ` Pavel Machek
2006-06-18 17:09 ` David Brownell
2006-06-18 17:16 ` David Brownell
2006-06-18 17:48 ` Linus Torvalds
2006-06-18 18:18 ` Linus Torvalds
2006-06-19 0:34 ` David Brownell
2006-06-20 2:15 ` Linus Torvalds
2006-06-20 22:47 ` Benjamin Herrenschmidt [this message]
2006-06-19 3:54 ` David Brownell
2006-06-20 22:06 ` Linus Torvalds
2006-06-21 21:17 ` David Brownell
2006-06-20 22:44 ` Benjamin Herrenschmidt
2006-06-21 0:49 ` Linus Torvalds
2006-06-21 1:10 ` Benjamin Herrenschmidt
2006-06-21 2:40 ` Linus Torvalds
2006-06-21 2:57 ` Benjamin Herrenschmidt
2006-06-21 3:23 ` Linus Torvalds
2006-06-21 3:59 ` Benjamin Herrenschmidt
2006-06-21 4:22 ` Linus Torvalds
2006-06-21 4:36 ` Linus Torvalds
2006-06-21 5:04 ` Benjamin Herrenschmidt
2006-06-21 15:15 ` Linus Torvalds
2006-06-21 15:33 ` Alan Stern
2006-06-21 16:03 ` Linus Torvalds
2006-06-21 16:35 ` Alan Stern
2006-06-21 17:04 ` Linus Torvalds
2006-06-21 18:53 ` Alan Stern
2006-06-21 20:49 ` Linus Torvalds
2006-06-22 2:16 ` David Brownell
2006-06-22 1:04 ` Benjamin Herrenschmidt
2006-06-22 1:01 ` Benjamin Herrenschmidt
2006-06-22 2:22 ` Linus Torvalds
2006-06-22 2:47 ` Linus Torvalds
2006-06-22 3:21 ` Benjamin Herrenschmidt
2006-06-22 3:18 ` Benjamin Herrenschmidt
2006-06-22 4:08 ` Linus Torvalds
2006-06-22 4:58 ` Benjamin Herrenschmidt
2006-06-22 16:10 ` Linus Torvalds
2006-06-22 18:30 ` David Brownell
2006-06-22 19:23 ` Linus Torvalds
2006-06-22 22:43 ` Benjamin Herrenschmidt
2006-06-23 18:06 ` David Brownell
2006-06-23 19:23 ` Linus Torvalds
2006-06-23 23:32 ` Adam Belay
2006-06-23 23:44 ` Linus Torvalds
2006-06-24 0:10 ` Linus Torvalds
2006-06-24 0:39 ` Benjamin Herrenschmidt
2006-06-24 3:30 ` David Brownell
2006-06-24 4:10 ` Linus Torvalds
2006-06-24 0:22 ` Benjamin Herrenschmidt
2006-06-24 0:29 ` Benjamin Herrenschmidt
2006-06-24 1:00 ` Linus Torvalds
2006-06-24 2:42 ` Adam Belay
2006-06-24 3:12 ` Linus Torvalds
2006-06-24 4:04 ` David Brownell
2006-06-24 4:35 ` Linus Torvalds
2006-06-25 8:23 ` Adam Belay
2006-06-25 17:15 ` Linus Torvalds
2006-06-26 23:30 ` Greg KH
2006-06-24 4:07 ` Linus Torvalds
2006-06-24 11:16 ` Nigel Cunningham
2006-06-24 16:24 ` Alan Stern
2006-06-24 22:28 ` Linus Torvalds
2006-06-24 22:41 ` Pavel Machek
2006-06-25 1:30 ` Linus Torvalds
2006-06-25 2:16 ` Alan Stern
2006-06-25 2:32 ` Linus Torvalds
2006-06-25 16:35 ` Alan Stern
2006-06-25 2:02 ` Alan Stern
2006-06-25 23:56 ` Nigel Cunningham
2006-06-26 23:31 ` Greg KH
2006-06-24 22:39 ` Pavel Machek
2006-06-29 0:37 ` Greg KH
2006-06-29 0:48 ` Linus Torvalds
2006-06-29 3:09 ` Greg KH
2006-06-29 3:24 ` Linus Torvalds
2006-06-29 4:21 ` Greg KH
2006-06-29 6:26 ` Greg KH
2006-06-29 22:58 ` Greg KH
2006-06-29 9:50 ` Pavel Machek
2006-07-06 22:27 ` David Brownell
2006-07-06 22:31 ` Greg KH
2006-07-08 17:45 ` PM_TRACE causing FSCK David Brownell
2006-07-06 23:27 ` [PATCH 2/2] Fix console handling during suspend/resume Dave Jones
2006-07-06 23:43 ` Linus Torvalds
2006-07-06 23:59 ` Dave Jones
2006-07-07 4:48 ` Linus Torvalds
2006-07-07 8:35 ` Pavel Machek
2006-07-06 23:51 ` David Brownell
2006-07-09 23:28 ` David Brownell
2006-07-10 7:53 ` Pavel Machek
2006-07-25 18:17 ` bus.suspend_prepare() David Brownell
2006-07-25 18:29 ` bus.suspend_prepare() Linus Torvalds
2006-07-25 19:17 ` bus.suspend_prepare() David Brownell
2006-07-25 22:24 ` bus.suspend_prepare() Nigel Cunningham
2006-07-26 10:12 ` bus.suspend_prepare() Pavel Machek
2006-07-26 10:11 ` bus.suspend_prepare() Pavel Machek
2006-06-24 4:52 ` [PATCH 2/2] Fix console handling during suspend/resume Benjamin Herrenschmidt
2006-06-24 5:18 ` Linus Torvalds
2006-06-24 6:30 ` Benjamin Herrenschmidt
2006-06-24 17:06 ` Rafael J. Wysocki
2006-06-27 6:08 ` Adam Belay
2006-06-27 6:18 ` Linus Torvalds
2006-06-27 6:58 ` Benjamin Herrenschmidt
2006-06-27 18:50 ` Linus Torvalds
2006-06-27 22:09 ` Benjamin Herrenschmidt
2006-06-27 7:07 ` Adam Belay
2006-06-27 15:33 ` Alan Stern
2006-06-28 0:16 ` Linus Torvalds
2006-07-05 18:40 ` David Brownell
2006-07-05 20:12 ` Linus Torvalds
2006-07-05 23:03 ` David Brownell
2006-07-06 1:15 ` Pavel Machek
2006-07-06 1:52 ` Nigel Cunningham
2006-07-06 7:15 ` Nigel Cunningham
2006-07-06 13:22 ` memcpy() in swsusp (was: Re: [PATCH 2/2] Fix console handling during suspend/resume) Rafael J. Wysocki
2006-07-06 14:19 ` David Brownell
2006-07-06 14:26 ` Rafael J. Wysocki
2006-07-06 20:35 ` Rafael J. Wysocki
2006-07-06 23:36 ` Pavel Machek
2006-07-06 20:44 ` David Brownell
2006-07-06 20:55 ` Rafael J. Wysocki
2006-07-06 21:01 ` Dave Jones
2006-07-06 21:07 ` David Brownell
2006-07-06 21:18 ` Rafael J. Wysocki
2006-07-06 22:06 ` Dave Jones
2006-07-07 8:20 ` Rafael J. Wysocki
2006-06-24 6:41 ` [PATCH 2/2] Fix console handling during suspend/resume Benjamin Herrenschmidt
2006-06-24 11:58 ` Nigel Cunningham
2006-06-24 21:20 ` Linus Torvalds
2006-06-25 1:10 ` David Brownell
2006-06-28 22:13 ` Pavel Machek
2006-06-24 3:33 ` David Brownell
2006-06-23 23:53 ` Benjamin Herrenschmidt
2006-06-24 3:28 ` David Brownell
2006-06-24 21:33 ` Pavel Machek
2006-06-25 1:00 ` David Brownell
2006-06-24 3:28 ` David Brownell
2006-06-24 11:57 ` Jim Gettys
2006-06-25 23:03 ` Pavel Machek
2006-06-25 23:18 ` Jim Gettys
2006-07-03 21:32 ` Pavel Machek
2006-06-26 0:16 ` David Brownell
2006-06-28 22:16 ` Pavel Machek
2006-06-28 23:38 ` David Brownell
2006-06-22 22:21 ` Benjamin Herrenschmidt
2006-06-22 22:31 ` Linus Torvalds
2006-06-22 23:11 ` Benjamin Herrenschmidt
2006-06-22 23:19 ` Linus Torvalds
2006-06-22 23:21 ` Linus Torvalds
2006-06-22 23:31 ` Benjamin Herrenschmidt
2006-06-22 23:41 ` Linus Torvalds
2006-06-23 0:01 ` Pavel Machek
2006-06-23 0:14 ` Benjamin Herrenschmidt
2006-06-23 0:05 ` Benjamin Herrenschmidt
2006-06-23 0:08 ` Benjamin Herrenschmidt
2006-06-23 16:26 ` David Brownell
2006-06-23 20:36 ` Adam Belay
2006-06-23 21:48 ` cpufreq-related updates [WAS: Fix console handling during suspend/resume] David Brownell
2006-06-23 22:10 ` Greg KH
2006-06-23 23:54 ` David Brownell
2006-06-23 22:53 ` Adam Belay
2006-06-22 23:31 ` [PATCH 2/2] Fix console handling during suspend/resume Pavel Machek
2006-06-22 23:42 ` Linus Torvalds
2006-06-22 23:51 ` Pavel Machek
2006-06-23 18:15 ` David Brownell
2006-06-24 21:35 ` Pavel Machek
2006-06-24 22:00 ` Linus Torvalds
2006-06-25 0:57 ` Benjamin Herrenschmidt
2006-06-25 1:05 ` Linus Torvalds
2006-06-25 1:12 ` Benjamin Herrenschmidt
2006-06-25 1:34 ` Linus Torvalds
2006-06-25 2:21 ` Benjamin Herrenschmidt
2006-06-25 23:09 ` Pavel Machek
2006-06-22 23:53 ` Linus Torvalds
2006-06-22 23:56 ` Pavel Machek
2006-06-23 16:37 ` David Brownell
2006-06-22 23:13 ` suspend debuggability [was Re: [PATCH 2/2] Fix console handling during suspend/resume] Pavel Machek
2006-06-22 5:52 ` [PATCH 2/2] Fix console handling during suspend/resume David Brownell
2006-06-22 6:28 ` Benjamin Herrenschmidt
2006-06-22 16:43 ` Linus Torvalds
2006-06-22 18:19 ` David Brownell
2006-06-23 17:18 ` David Brownell
2006-06-23 17:43 ` David Brownell
2006-06-23 18:18 ` wakeup events [WAS: Re*N Fix console handling] David Brownell
2006-06-21 21:13 ` [PATCH 2/2] Fix console handling during suspend/resume David Brownell
2006-06-22 0:42 ` Benjamin Herrenschmidt
2006-06-21 22:54 ` Benjamin Herrenschmidt
2006-06-22 0:15 ` Benjamin Herrenschmidt
2006-06-22 2:21 ` David Brownell
2006-06-22 3:23 ` Benjamin Herrenschmidt
2006-06-22 5:36 ` David Brownell
2006-06-22 16:17 ` Alan Stern
2006-06-22 18:27 ` David Brownell
2006-06-22 20:31 ` Alan Stern
2006-06-22 23:48 ` David Brownell
2006-06-23 2:41 ` Alan Stern
2006-06-23 16:43 ` David Brownell
2006-06-23 18:32 ` Alan Stern
2006-06-24 3:39 ` David Brownell
2006-06-24 16:19 ` Alan Stern
2006-06-25 2:20 ` Alan Stern
2006-06-22 22:30 ` Benjamin Herrenschmidt
2006-06-23 2:35 ` Alan Stern
2006-06-21 21:22 ` David Brownell
2006-06-21 4:45 ` Benjamin Herrenschmidt
2006-06-21 15:08 ` Linus Torvalds
2006-06-21 22:51 ` Benjamin Herrenschmidt
2006-06-22 0:48 ` Linus Torvalds
2006-06-21 21:21 ` David Brownell
2006-06-21 21:18 ` David Brownell
2006-06-22 1:08 ` Benjamin Herrenschmidt
2006-06-22 1:24 ` Linus Torvalds
2006-06-22 1:33 ` Benjamin Herrenschmidt
2006-06-14 23:02 ` Rafael J. Wysocki
2006-06-14 23:32 ` Pavel Machek
2006-06-15 9:39 ` Rafael J. Wysocki
2006-06-16 0:47 ` Benjamin Herrenschmidt
2006-06-16 1:03 ` Benjamin Herrenschmidt
2006-06-14 22:37 ` Linus Torvalds
2006-06-15 0:00 ` Pavel Machek
2006-06-15 0:12 ` Linus Torvalds
2006-06-15 9:11 ` suspend-devices-not-cpu [was Re: [PATCH 2/2] Fix console handling during suspend/resume] Pavel Machek
2006-06-15 0:39 ` [PATCH 2/2] Fix console handling during suspend/resume Adam Belay
2006-06-15 0:40 ` Greg KH
2006-06-15 1:50 ` Adam Belay
2006-06-15 0:01 ` Linus Torvalds
2006-06-15 8:23 ` Pavel Machek
2006-06-16 1:02 ` suspend/resume issue (Was: [PATCH 2/2] Fix console handling during suspend/resume) Benjamin Herrenschmidt
2006-06-16 8:01 ` [PATCH 2/2] Fix console handling during suspend/resume Benjamin Herrenschmidt
2006-06-16 0:45 ` [PATCH 0/2] suspend-to-ram debugging patches Benjamin Herrenschmidt
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