From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Daniel Borkmann <danborkmann@googlemail.com>
Cc: "Bartłomiej Zimoń" <uzi18@o2.pl>, "Andy Walls" <awalls@radix.net>,
linux-kernel@vger.kernel.org,
"pm list" <linux-pm@lists.linux-foundation.org>,
"Alan Stern" <stern@rowland.harvard.edu>
Subject: Re: [suspend/resume] Re: userspace notification from module
Date: Sun, 3 Jan 2010 22:33:19 +0100 [thread overview]
Message-ID: <201001032233.19599.rjw@sisk.pl> (raw)
In-Reply-To: <4B4063AB.7080401@gmail.com>
On Sunday 03 January 2010, Daniel Borkmann wrote:
...
> Actually I think this is what signals are there for and bringing this
> information via signals would have least overhead, problem is that this
> is not POSIX compliant, but may be you could have a try at this?!
You need information to be passed both ways.
Namely, a power manager (be it a kernel module or a user space process) has
to communicate to the (other) processes that it's about to suspend and it
should wait for each of them to say that it's now OK to suspend.
You could do that with signals, but I guess it's not the easiest way. :-)
Rafael
next prev parent reply other threads:[~2010-01-03 21:32 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-02 13:29 Bartłomiej Zimoń
2010-01-02 14:04 ` Daniel Borkmann
2010-01-02 14:27 ` [suspend/resume] " Bartłomiej Zimoń
2010-01-02 15:11 ` Oliver Neukum
[not found] ` <6f52f5b81001020713j5435cfadr1143806a9026adc2@mail.gmail.com>
2010-01-02 15:15 ` Daniel Borkmann
2010-01-02 15:40 ` Andy Walls
2010-01-02 15:56 ` Daniel Borkmann
2010-01-02 18:26 ` Bartłomiej Zimoń
2010-01-02 21:01 ` Rafael J. Wysocki
[not found] ` <7cf4f51f.5fc2a5cd.4b3fc3ad.c849c@o2.pl>
2010-01-02 23:29 ` Rafael J. Wysocki
[not found] ` <65e5aef6.33251eb4.4b3fecf4.a2f99@o2.pl>
2010-01-03 9:30 ` Daniel Borkmann
2010-01-03 10:06 ` Daniel Borkmann
[not found] ` <43bd3f9d.71702a8b.4b407900.b542@o2.pl>
2010-01-03 21:49 ` Rafael J. Wysocki
2010-01-04 13:38 ` Stefan Seyfried
2010-01-03 21:33 ` Rafael J. Wysocki [this message]
2010-01-03 21:29 ` Rafael J. Wysocki
[not found] ` <24fb84fa.38887c91.4b411ffd.e7f1f@o2.pl>
2010-01-03 23:30 ` Rafael J. Wysocki
2010-01-03 23:35 ` Bartłomiej Zimoń
2010-01-03 23:45 ` Rafael J. Wysocki
2010-01-04 0:51 ` Bartłomiej Zimoń
2010-01-04 1:06 ` Bartłomiej Zimoń
2010-01-04 19:43 ` Rafael J. Wysocki
2010-01-05 9:07 ` [linux-pm] " Anders Eriksson
[not found] ` <7e89c5d.77f82021.4b43a8d7.127e1@o2.pl>
2010-01-05 21:23 ` Rafael J. Wysocki
2010-01-05 22:12 ` Bartłomiej Zimoń
2010-01-05 23:03 ` Rafael J. Wysocki
[not found] ` <1ab86ec9.7bc73105.4b43cd45.c2747@o2.pl>
2010-01-06 14:35 ` Anders Eriksson
2010-01-06 20:37 ` [linux-pm] [suspend/resume] Re: userspace notific ation " Bartłomiej Zimoń
2010-01-06 20:49 ` Roland Dreier
2010-01-06 20:56 ` Roland Dreier
2010-01-15 20:02 ` [linux-pm] [suspend/resume] Re: userspace notification " Pavel Machek
2010-01-05 21:26 ` Stefan Seyfried
[not found] ` <11f818a7.4b53f68a.4b43bb9b.b3a7f@o2.pl>
2010-01-05 23:05 ` Rafael J. Wysocki
2010-01-04 12:46 ` Daniel Borkmann
2010-01-04 19:45 ` Rafael J. Wysocki
2010-01-03 17:20 ` Bartłomiej Zimoń
2010-01-03 21:50 ` Rafael J. Wysocki
2010-01-09 10:32 ` Pavel Machek
2010-01-09 13:40 ` Rafael J. Wysocki
2010-01-15 20:03 ` Pavel Machek
2010-01-15 22:14 ` Rafael J. Wysocki
2010-01-16 3:00 ` Eric Miao
2010-01-16 17:00 ` Stanislav Brabec
2010-01-16 18:12 ` Pavel Machek
2010-01-16 22:05 ` Rafael J. Wysocki
2010-01-16 22:19 ` Pavel Machek
2010-01-16 22:25 ` Pavel Machek
2010-01-16 22:31 ` Rafael J. Wysocki
2010-01-16 22:26 ` Rafael J. Wysocki
2010-01-17 13:07 ` Pavel Machek
2010-01-17 13:26 ` Russell King - ARM Linux
2010-01-19 5:15 ` Pavel Machek
2010-01-16 22:32 ` Russell King - ARM Linux
2010-01-16 18:12 ` Pavel Machek
2010-01-16 18:12 ` Pavel Machek
2010-01-16 22:07 ` Rafael J. Wysocki
2010-01-16 22:14 ` Pavel Machek
2010-01-16 22:21 ` Rafael J. Wysocki
2010-01-02 21:20 ` Bartłomiej Zimoń
2010-01-02 14:31 ` Bartłomiej Zimoń
2010-01-02 22:34 Bartłomiej Zimoń
2010-01-03 8:31 Bartłomiej Zimoń
2010-01-03 11:06 Bartłomiej Zimoń
2010-01-03 23:17 Bartłomiej Zimoń
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