From: Pavel Machek <pavel@ucw.cz>
To: Arve Hj??nnev??g <arve@android.com>
Cc: linux-pm@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, Len Brown <len.brown@intel.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Randy Dunlap <rdunlap@xenotime.net>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
Magnus Damm <damm@igel.co.jp>,
Nigel Cunningham <nigel@tuxonice.net>,
Cornelia Huck <cornelia.huck@de.ibm.com>,
linux-doc@vger.kernel.org
Subject: Re: [PATCH 2/9] PM: suspend_block: Add driver to access suspend blockers from user-space
Date: Fri, 23 Apr 2010 10:43:49 +0200 [thread overview]
Message-ID: <20100423084349.GC1573@ucw.cz> (raw)
In-Reply-To: <1271984938-13920-3-git-send-email-arve@android.com>
Hi!
> Add a misc device, "suspend_blocker", that allows user-space processes
> to block auto suspend. The device has ioctls to create a suspend_blocker,
> and to block and unblock suspend. To delete the suspend_blocker, close
> the device.
>
> Signed-off-by: Arve Hj??nnev??g <arve@android.com>
> --- a/Documentation/power/suspend-blockers.txt
> +++ b/Documentation/power/suspend-blockers.txt
> @@ -95,3 +95,20 @@ if (list_empty(&state->pending_work))
> else
> suspend_block(&state->suspend_blocker);
>
> +User-space API
> +==============
> +
> +To create a suspend_blocker from user-space, open the suspend_blocker device:
> + fd = open("/dev/suspend_blocker", O_RDWR | O_CLOEXEC);
> +then call:
> + ioctl(fd, SUSPEND_BLOCKER_IOCTL_INIT(strlen(name)), name);
This seems like very wrong idea -- it uses different ioctl number for
each length AFAICT.
--
(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:[~2010-04-23 15:29 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-23 1:08 [PATCH 0/9] Suspend block api (version 4) Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 1/9] PM: Add suspend block api Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 2/9] PM: suspend_block: Add driver to access suspend blockers from user-space Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 3/9] PM: suspend_block: Abort task freezing if a suspend_blocker is active Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 4/9] PM: suspend_block: Switch to list of active and inactive suspend blockers Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 5/9] PM: suspend_block: Add debugfs file Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 6/9] PM: suspend_block: Add suspend_blocker stats Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 7/9] PM: Add suspend blocking work Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 8/9] Input: Block suspend while event queue is not empty Arve Hjønnevåg
2010-04-23 1:08 ` [PATCH 9/9] power_supply: Block suspend while power supply change notifications are pending Arve Hjønnevåg
2010-04-23 20:56 ` [PATCH 8/9] Input: Block suspend while event queue is not empty Randy Dunlap
2010-04-23 21:08 ` Dmitry Torokhov
2010-04-24 5:02 ` Arve Hjønnevåg
2010-04-24 14:36 ` [linux-pm] " Alan Stern
2010-04-25 2:30 ` Rafael J. Wysocki
2010-04-25 15:29 ` Alan Stern
2010-04-25 22:41 ` Arve Hjønnevåg
2010-04-24 4:58 ` Arve Hjønnevåg
2010-04-23 8:16 ` [PATCH 7/9] PM: Add suspend blocking work Tejun Heo
2010-04-23 12:20 ` Oleg Nesterov
2010-04-23 22:49 ` Arve Hjønnevåg
2010-04-24 5:21 ` Arve Hjønnevåg
2010-04-24 6:33 ` Tejun Heo
2010-04-24 7:21 ` Arve Hjønnevåg
2010-04-24 7:43 ` Tejun Heo
2010-04-26 14:06 ` Oleg Nesterov
2010-04-23 20:58 ` [PATCH 5/9] PM: suspend_block: Add debugfs file Randy Dunlap
2010-04-24 3:23 ` Arve Hjønnevåg
2010-04-24 4:24 ` Randy Dunlap
2010-04-24 4:54 ` Arve Hjønnevåg
2010-04-25 18:15 ` Greg KH
2010-04-25 19:53 ` Randy Dunlap
2010-04-26 0:00 ` tytso
2010-04-26 0:23 ` Randy Dunlap
2010-04-26 0:45 ` tytso
2010-04-26 0:50 ` Randy Dunlap
2010-04-26 1:39 ` [linux-pm] " Alan Stern
2010-04-26 6:24 ` Brian Swetland
2010-04-26 13:28 ` Randy Dunlap
2010-04-23 2:25 ` [linux-pm] [PATCH 2/9] PM: suspend_block: Add driver to access suspend blockers from user-space Matt Helsley
2010-04-23 3:54 ` Arve Hjønnevåg
2010-04-23 4:38 ` Greg KH
2010-04-23 8:43 ` Pavel Machek [this message]
2010-04-23 16:43 ` Alan Stern
2010-04-24 3:20 ` Arve Hjønnevåg
2010-04-24 5:55 ` Pavel Machek
2010-04-24 14:44 ` Alan Stern
2010-04-25 22:34 ` Arve Hjønnevåg
2010-04-26 19:25 ` Alan Stern
2010-04-27 4:04 ` Arve Hjønnevåg
2010-04-27 18:33 ` Alan Stern
2010-04-27 22:03 ` Rafael J. Wysocki
2010-04-27 23:22 ` Arve Hjønnevåg
2010-04-24 1:53 ` tytso
2010-04-24 5:39 ` Pavel Machek
2010-04-23 16:33 ` [PATCH 1/9] PM: Add suspend block api Alan Stern
2010-04-23 16:45 ` [linux-pm] " Alan Stern
2010-04-24 2:15 ` Arve Hjønnevåg
2010-04-24 2:30 ` Alan Stern
2010-04-24 3:14 ` Arve Hjønnevåg
2010-04-23 4:39 ` [linux-pm] [PATCH 0/9] Suspend block api (version 4) Greg KH
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