From: "Bartłomiej Zimoń" <uzi18@o2.pl>
To: "Andy Walls" <awalls@radix.net>,
"Daniel Borkmann" <danborkmann@googlemail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [suspend/resume] Re: userspace notification from module
Date: Sat, 02 Jan 2010 19:26:29 +0100 [thread overview]
Message-ID: <ddef1cf.2c9460e3.4b3f8fd5.c10cd@o2.pl> (raw)
In-Reply-To: <6f52f5b81001020756i73fbb137if1af8ac8b306f6ba@mail.gmail.com>
Dnia 2 stycznia 2010 16:56 Daniel Borkmann <danborkmann@googlemail.com> napisał(a):
> Hi Andy,
>
> 2010/1/2 Andy Walls <awalls@radix.net>:
> > Why not:
> >
> > a. write a module that implements a device node that supports poll(),
> > and
> >
> > b. have a user space process select() on the fd for read or exception
> > notification
> >
> > ?
>
> This is, of course, another possible solution that is more "cleaner"
> than the one with the signals.
> Then, your userspace program would have another thread polling for the
> device node. Question is which timeout would be appropriate to be "CPU
> friendly" and to keep notification latency short?
>
Just need as fast as possible solution and on the other hand acceptable for kernel sources.
Usually programs needs just to disconnect something or set one flag.
Even if program will have no time for this it could be enough just to send this precious info.
Best regards.
Barłomiej Zimoń
PLD Linux, Kadu Team
next prev parent reply other threads:[~2010-01-02 18:26 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-02 13:29 userspace notification from module 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 [this message]
2010-01-02 21:01 ` Rafael J. Wysocki
[not found] ` <7cf4f51f.5fc2a5cd.4b3fc3ad.c849c@o2.pl>
2010-01-02 23:29 ` Rafael J. Wysocki
2010-01-02 23:29 ` Rafael J. Wysocki
2010-01-03 1:03 ` Bartłomiej Zimoń
2010-01-03 9:30 ` Daniel Borkmann
2010-01-03 9:30 ` Daniel Borkmann
2010-01-03 10:06 ` Daniel Borkmann
2010-01-03 10:06 ` Daniel Borkmann
2010-01-03 11:01 ` Bartłomiej Zimoń
2010-01-03 21:49 ` Rafael J. Wysocki
2010-01-03 21:49 ` Rafael J. Wysocki
2010-01-04 13:38 ` Stefan Seyfried
2010-01-04 13:38 ` Stefan Seyfried
2010-01-03 21:33 ` Rafael J. Wysocki
2010-01-03 21:33 ` Rafael J. Wysocki
2010-01-03 21:29 ` Rafael J. Wysocki
2010-01-03 21:29 ` Rafael J. Wysocki
2010-01-03 22:53 ` Bartłomiej Zimoń
2010-01-03 23:30 ` Rafael J. Wysocki
2010-01-03 23:30 ` Rafael J. Wysocki
2010-01-03 23:35 ` Bartłomiej Zimoń
2010-01-03 23:45 ` Rafael J. Wysocki
2010-01-03 23:45 ` Rafael J. Wysocki
2010-01-04 0:51 ` Bartłomiej Zimoń
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
2010-01-05 21:02 ` Bartłomiej Zimoń
2010-01-05 21:23 ` [linux-pm] " Rafael J. Wysocki
2010-01-05 22:12 ` Bartłomiej Zimoń
2010-01-05 22:12 ` [linux-pm] " Bartłomiej Zimoń
2010-01-05 23:03 ` Rafael J. Wysocki
2010-01-05 23:03 ` [linux-pm] " Rafael J. Wysocki
2010-01-05 23:37 ` Bartłomiej Zimoń
2010-01-06 14:35 ` [linux-pm] " 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
2010-01-06 20:56 ` Roland Dreier
2010-01-06 20:49 ` Roland Dreier
2010-01-06 20:37 ` Bartłomiej Zimoń
2010-01-15 20:02 ` [suspend/resume] Re: userspace notification " Pavel Machek
2010-01-15 20:02 ` [linux-pm] " Pavel Machek
2010-01-06 14:35 ` Anders Eriksson
2010-01-05 21:23 ` Rafael J. Wysocki
2010-01-05 21:26 ` [linux-pm] " Stefan Seyfried
2010-01-05 22:22 ` Bartłomiej Zimoń
2010-01-05 23:05 ` Rafael J. Wysocki
2010-01-05 23:05 ` [linux-pm] " Rafael J. Wysocki
2010-01-06 0:43 ` Bartłomiej Zimoń
2010-01-06 10:10 ` Stefan Seyfried
2010-01-05 21:26 ` Stefan Seyfried
2010-01-05 9:07 ` Anders Eriksson
2010-01-04 19:43 ` Rafael J. Wysocki
2010-01-04 12:46 ` Daniel Borkmann
2010-01-04 19:45 ` Rafael J. Wysocki
2010-01-04 19:45 ` Rafael J. Wysocki
2010-01-04 12:46 ` Daniel Borkmann
2010-01-03 23:35 ` Bartłomiej Zimoń
2010-01-03 17:20 ` Bartłomiej Zimoń
2010-01-03 17:20 ` Bartłomiej Zimoń
2010-01-03 21:50 ` Rafael J. Wysocki
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 20:03 ` Pavel Machek
2010-01-15 22:14 ` Rafael J. Wysocki
2010-01-15 22:14 ` Rafael J. Wysocki
2010-01-16 3:00 ` Eric Miao
2010-01-16 3:00 ` Eric Miao
2010-01-16 17:00 ` Stanislav Brabec
2010-01-16 17:00 ` Stanislav Brabec
2010-01-16 18:12 ` Pavel Machek
2010-01-16 18:12 ` Pavel Machek
2010-01-16 22:05 ` Rafael J. Wysocki
2010-01-16 22:05 ` Rafael J. Wysocki
2010-01-16 22:19 ` Pavel Machek
2010-01-16 22:19 ` Pavel Machek
2010-01-16 22:25 ` Pavel Machek
2010-01-16 22:25 ` Pavel Machek
2010-01-16 22:31 ` Rafael J. Wysocki
2010-01-16 22:31 ` Rafael J. Wysocki
2010-01-16 22:26 ` Rafael J. Wysocki
2010-01-16 22:26 ` Rafael J. Wysocki
2010-01-17 13:07 ` Pavel Machek
2010-01-17 13:07 ` Pavel Machek
2010-01-17 13:26 ` Russell King - ARM Linux
2010-01-17 13:26 ` Russell King - ARM Linux
2010-01-19 5:15 ` Pavel Machek
2010-01-19 5:15 ` Pavel Machek
2010-01-16 22:32 ` Russell King - ARM Linux
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 18:12 ` Pavel Machek
2010-01-16 18:12 ` Pavel Machek
2010-01-16 22:07 ` Rafael J. Wysocki
2010-01-16 22:07 ` Rafael J. Wysocki
2010-01-16 22:14 ` Pavel Machek
2010-01-16 22:14 ` Pavel Machek
2010-01-16 22:21 ` Rafael J. Wysocki
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
2010-01-03 23:17 Bartłomiej Zimoń
2010-01-06 1:05 [linux-pm] " Bartłomiej Zimoń
2010-01-06 22:48 ` Rafael J. Wysocki
2010-01-06 1:05 Bartłomiej Zimoń
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