From: Pavel Machek <pavel@suse.cz>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-pm <linux-pm@lists.osdl.org>
Subject: Re: [PATCH] pm_ops: add irq enable/disable hooks
Date: Tue, 10 Apr 2007 13:36:24 +0200 [thread overview]
Message-ID: <20070410113623.GF8239@elf.ucw.cz> (raw)
In-Reply-To: <1175896767.8459.6.camel@johannes.berg>
Hi!
> > And why do _you_ need it? Unfortunately I do not know what the
> > decrementer is...?
>
> The decrementer is a sort of timer that counts down and once it
> overflows raises an exception in the CPU. Like a timer interrupt, but
> not coming from anything external. We need to be able to make sure we
> don't get a decrementer exception at some spots.
>
> Also, we need to call some platform function things at that point to
> prepare the system for suspend, and it needs to be done with interrupts
> enabled but after all devices are suspended.
Hmm, and can't you simply create sysdev for decrementer and special
platform handling? sysdevs should be suspended last...
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:[~2007-04-10 11:36 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-05 21:54 [PATCH] pm_ops: add irq enable/disable hooks Johannes Berg
2007-04-05 23:30 ` Rafael J. Wysocki
2007-04-05 23:28 ` Johannes Berg
2007-04-06 0:02 ` Rafael J. Wysocki
2007-04-06 0:09 ` Johannes Berg
2007-04-06 0:17 ` Rafael J. Wysocki
2007-04-06 8:48 ` Johannes Berg
2007-04-06 9:41 ` Rafael J. Wysocki
2007-04-06 9:44 ` Johannes Berg
2007-04-06 10:02 ` Rafael J. Wysocki
2007-04-06 10:00 ` Johannes Berg
2007-04-06 19:19 ` Pavel Machek
2007-04-06 21:59 ` Johannes Berg
2007-04-10 11:36 ` Pavel Machek [this message]
2007-04-10 11:45 ` Johannes Berg
2007-04-10 12:00 ` Pavel Machek
2007-04-10 13:42 ` Johannes Berg
2007-04-11 11:22 ` Benjamin Herrenschmidt
2007-04-11 14:07 ` Alan Stern
2007-04-11 16:39 ` Johannes Berg
2007-04-11 21:40 ` Benjamin Herrenschmidt
2007-04-11 11:15 ` Johannes Berg
2007-04-06 19:16 ` Pavel Machek
2007-04-11 15:54 ` [PATCH v2] pm_ops: add system quiesce/activate hooks Johannes Berg
2007-04-11 20:47 ` Dmitry Krivoschekov
2007-04-12 8:39 ` Johannes Berg
2007-04-12 8:42 ` Benjamin Herrenschmidt
2007-04-12 10:16 ` Pavel Machek
2007-04-12 10:45 ` Rafael J. Wysocki
2007-04-12 10:47 ` Johannes Berg
2007-04-13 21:00 ` Pavel Machek
2007-04-13 21:11 ` Johannes Berg
2007-04-13 21:43 ` Pavel Machek
2007-04-13 21:11 ` Paul Mackerras
2007-04-13 21:15 ` Benjamin Herrenschmidt
2007-04-12 11:23 ` Benjamin Herrenschmidt
2007-04-12 15:03 ` Rafael J. Wysocki
2007-04-12 16:32 ` David Brownell
2007-04-13 6:52 ` Johannes Berg
2007-04-13 7:59 ` [PATCH v3] " Johannes Berg
2007-04-12 17:36 ` [PATCH v2] " Dmitry Krivoschekov
2007-04-12 20:51 ` Benjamin Herrenschmidt
2007-04-13 6:54 ` Johannes Berg
2007-04-13 8:04 ` David Brownell
2007-04-13 8:59 ` Johannes Berg
2007-04-13 9:07 ` Benjamin Herrenschmidt
2007-04-13 11:47 ` Rafael J. Wysocki
2007-04-13 12:58 ` Johannes Berg
2007-04-13 13:26 ` [PATCH v4] " Johannes Berg
2007-04-13 20:43 ` Rafael J. Wysocki
2007-04-13 20:58 ` Pavel Machek
2007-04-13 21:06 ` Johannes Berg
2007-04-13 21:12 ` Pavel Machek
2007-04-13 21:18 ` Johannes Berg
2007-04-13 21:33 ` Pavel Machek
2007-04-13 21:45 ` Johannes Berg
2007-04-13 21:52 ` Pavel Machek
2007-04-13 21:59 ` Johannes Berg
2007-04-13 22:18 ` Rafael J. Wysocki
2007-04-13 22:20 ` Johannes Berg
2007-04-13 22:49 ` Rafael J. Wysocki
2007-04-13 22:55 ` Johannes Berg
2007-04-13 22:09 ` Rafael J. Wysocki
2007-04-13 22:13 ` Johannes Berg
2007-04-13 22:16 ` Pavel Machek
2007-04-14 16:55 ` Paul Mackerras
2007-04-13 22:25 ` Benjamin Herrenschmidt
2007-04-13 22:39 ` Pavel Machek
2007-04-13 23:19 ` Benjamin Herrenschmidt
2007-04-14 9:14 ` Rafael J. Wysocki
2007-04-14 9:19 ` Johannes Berg
2007-04-15 0:19 ` Benjamin Herrenschmidt
2007-04-16 7:32 ` Pavel Machek
2007-04-16 8:37 ` Johannes Berg
2007-04-16 12:47 ` Pavel Machek
2007-04-17 4:58 ` Paul Mackerras
2007-04-18 7:50 ` Benjamin Herrenschmidt
2007-04-13 22:47 ` Rafael J. Wysocki
2007-04-13 21:18 ` Benjamin Herrenschmidt
2007-04-13 21:56 ` Pavel Machek
2007-04-13 22:01 ` Johannes Berg
2007-04-13 22:24 ` Benjamin Herrenschmidt
2007-04-13 21:15 ` Benjamin Herrenschmidt
2007-04-13 21:50 ` Pavel Machek
2007-04-13 22:23 ` Benjamin Herrenschmidt
2007-04-14 22:10 ` David Brownell
2007-04-13 21:05 ` [PATCH v2] " Pavel Machek
2007-04-12 8:44 ` Benjamin Herrenschmidt
2007-04-17 17:18 ` [PATCH] s2ram: add arch irq disable/enable hooks Johannes Berg
2007-04-18 11:27 ` Pavel Machek
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