From: "Jörn Engel" <joern@logfs.org>
To: Tim Bird <tim.bird@am.sony.com>
Cc: linux-embedded <linux-embedded@vger.kernel.org>
Subject: Re: Recommendation for activating a deferred module init in the kernel
Date: Tue, 17 Jun 2008 21:07:51 +0200 [thread overview]
Message-ID: <20080617190750.GA31224@logfs.org> (raw)
In-Reply-To: <48580116.9070504@am.sony.com>
On Tue, 17 June 2008 11:23:18 -0700, Tim Bird wrote:
>
> I'm not that happy using an ioctl for this trigger. What is
> the preferred method of activating a kernel feature like this?
> I presume something in /proc or /sys, but I'm not sure.
I personally would be unhappy with any kind of interface for this. It
would be much nicer to make it transparent and still get the benefits.
One option would be to start a kernel thread for the initialization and
renice it to 19 or so.
If you want an explicit trigger, you could either hook into init_post()
or have hooks in the open functions of drivers with deferred
initialization. Obviously you need to wait for completion here anyway,
so adding a trigger wouldn't be too expensive.
Jörn
--
Joern's library part 13:
http://www.chip-architect.com/
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next prev parent reply other threads:[~2008-06-17 19:07 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-17 18:23 Recommendation for activating a deferred module init in the kernel Tim Bird
2008-06-17 18:51 ` David VomLehn
2008-06-17 19:07 ` Jörn Engel [this message]
2008-06-17 19:22 ` Jim Freeman
2008-06-17 20:06 ` Tim Bird
2008-06-17 19:52 ` Tim Bird
2008-06-17 19:55 ` Tim Bird
2008-06-17 20:23 ` Jörn Engel
2008-06-17 20:35 ` Josh Boyer
2008-06-17 22:48 ` Stefan Richter
2008-06-18 0:03 ` Johannes Stezenbach
2008-06-18 0:10 ` Stefan Richter
2008-06-18 9:38 ` Johannes Stezenbach
2008-06-17 20:19 ` Jörn Engel
2008-06-18 12:38 ` Amol Lad
[not found] ` <4858A659.8030502@codefidence.com>
2008-06-18 16:08 ` Tim Bird
[not found] ` <4859ECF3.3000500@codefidence.com>
2008-06-19 17:58 ` Tim Bird
2008-06-22 7:08 ` Gilad Ben-Yossef
2008-06-23 17:40 ` Tim Bird
2008-07-01 14:20 ` Gilad Ben-Yossef
-- strict thread matches above, loose matches on Subject: below --
2008-06-18 6:47 Gilad Ben-Yossef
2008-06-18 8:20 ` David Woodhouse
2008-06-18 8:32 ` David Woodhouse
2008-06-18 8:52 ` Adrian Bunk
2008-06-18 8:57 ` Geert Uytterhoeven
2008-06-18 9:59 ` David Woodhouse
2008-06-18 10:33 ` Adrian Bunk
2008-06-18 10:41 ` David Woodhouse
2008-06-18 11:37 ` Geert Uytterhoeven
2008-06-18 14:56 ` Nicolas Pitre
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