From: "Bartłomiej Zimoń" <uzi18@o2.pl>
To: linux-kernel@vger.kernel.org
Cc: awalls@radix.net, linux-pm@lists.linux-foundation.org,
"Anders Eriksson" <aeriksson@fastmail.fm>,
danborkmann@googlemail.com
Subject: Re: [suspend/resume] Re: userspace notification from module
Date: Tue, 05 Jan 2010 22:02:15 +0100 [thread overview]
Message-ID: <7e89c5d.77f82021.4b43a8d7.127e1@o2.pl> (raw)
In-Reply-To: <20100105090706.751D233C4B0@tippex.mynet.homeunix.org>
Dnia 5 stycznia 2010 10:07 Anders Eriksson <aeriksson@fastmail.fm> napisał(a):
>
> rjw@sisk.pl said:
> >> > I don't see a problem with this in principle, although I don't think signals
> >> > are very suitable for this particular purpose, because you need two-way
> >> > communication between the power manager and the processes it's going to
> >> > notify (because it has to wait for the processes to finish their preparations
> >> > and to tell it that they are ready).
>
> Wouldn't there need to be dependecy tracking for the userspace processes? A
> process couldn't signal "done" until it know there's no more work to do, which
> requires all other processes to finish up first.
>
Not all processes will need pm notification.
Just in case, could this "power manager" be provided as userspace
driver for kernel (for example compiled as UIO)?
Best regards.
Bartłomiej Zimoń
PLD Linux, Kadu Team, FreeRunner user
http://kadu-im.blogspot.com/
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next prev parent reply other threads:[~2010-01-05 21:02 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <686edb2c.6263643a.4b3f4a3b.b60b3@o2.pl>
[not found] ` <201001022201.04281.rjw@sisk.pl>
[not found] ` <7cf4f51f.5fc2a5cd.4b3fc3ad.c849c@o2.pl>
2010-01-02 23:29 ` [suspend/resume] Re: userspace notification from module Rafael J. Wysocki
2010-01-03 1:03 ` Bartłomiej Zimoń
2010-01-03 9:30 ` Daniel Borkmann
2010-01-03 21:29 ` Rafael J. Wysocki
[not found] ` <4B4063AB.7080401@gmail.com>
2010-01-03 10:06 ` Daniel Borkmann
[not found] ` <4B406C14.2070907@gmail.com>
2010-01-03 11:01 ` Bartłomiej Zimoń
2010-01-03 21:49 ` Rafael J. Wysocki
[not found] ` <201001032249.11510.rjw@sisk.pl>
2010-01-04 13:38 ` Stefan Seyfried
2010-01-03 21:33 ` Rafael J. Wysocki
[not found] ` <201001032229.53221.rjw@sisk.pl>
2010-01-03 22:53 ` Bartłomiej Zimoń
2010-01-03 23:30 ` Rafael J. Wysocki
[not found] ` <201001040030.01256.rjw@sisk.pl>
2010-01-03 23:35 ` Bartłomiej Zimoń
[not found] ` <54ac764e.502c1a33.4b4129c3.9dc1b@o2.pl>
2010-01-03 23:45 ` Rafael J. Wysocki
[not found] ` <201001040045.39517.rjw@sisk.pl>
2010-01-04 0:51 ` Bartłomiej Zimoń
2010-01-04 12:46 ` Daniel Borkmann
[not found] ` <a522f3c.3bab16d1.4b413b9c.ec43@o2.pl>
2010-01-04 19:43 ` Rafael J. Wysocki
[not found] ` <201001042043.27037.rjw@sisk.pl>
2010-01-05 9:07 ` Anders Eriksson
[not found] ` <20100105090706.751D233C4B0@tippex.mynet.homeunix.org>
2010-01-05 21:02 ` Bartłomiej Zimoń [this message]
2010-01-05 21:23 ` Rafael J. Wysocki
[not found] ` <201001052223.21964.rjw@sisk.pl>
2010-01-05 22:12 ` Bartłomiej Zimoń
[not found] ` <16a1b165.2fdc37c6.4b43b943.c6733@o2.pl>
2010-01-05 23:03 ` Rafael J. Wysocki
[not found] ` <201001060003.23419.rjw@sisk.pl>
2010-01-05 23:37 ` Bartłomiej Zimoń
2010-01-06 14:35 ` Anders Eriksson
[not found] ` <20100106143534.A7EEA33C5F5@tippex.mynet.homeunix.org>
2010-01-06 20:37 ` [suspend/resume] Re: userspace notific ation " Bartłomiej Zimoń
[not found] ` <5c33d92a.63a2de8c.4b44f47a.8762@o2.pl>
2010-01-06 20:49 ` Roland Dreier
[not found] ` <adatyuzt0vg.fsf@roland-alpha.cisco.com>
2010-01-06 20:56 ` Roland Dreier
2010-01-15 20:02 ` [suspend/resume] Re: userspace notification " Pavel Machek
2010-01-05 21:26 ` Stefan Seyfried
[not found] ` <20100105222657.27218c4c@strolchi.home.s3e.de>
2010-01-05 22:22 ` Bartłomiej Zimoń
2010-01-05 23:05 ` Rafael J. Wysocki
[not found] ` <201001060005.17246.rjw@sisk.pl>
2010-01-06 0:43 ` Bartłomiej Zimoń
2010-01-06 10:10 ` Stefan Seyfried
[not found] ` <4B41E318.4050809@gmail.com>
2010-01-04 19:45 ` Rafael J. Wysocki
2010-01-03 17:20 ` Bartłomiej Zimoń
[not found] ` <ff72e3e.3b5092ec.4b40d1ec.54407@o2.pl>
2010-01-03 21:50 ` Rafael J. Wysocki
2010-01-03 23:17 Bartłomiej Zimoń
-- strict thread matches above, loose matches on Subject: below --
2010-01-06 1:05 Bartłomiej Zimoń
[not found] <1df13dac.5ba05e5c.4b43e1e2.120e@o2.pl>
2010-01-06 22:48 ` Rafael J. Wysocki
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