linux-kernel - Re: ldd scull

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Date:	Sun, 5 Sep 2010 14:20:20 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	runcoderen <runcoderzhcn@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: ldd scull_load question

On Sun, 05 Sep 2010 09:01:55 +0800 runcoderen wrote:

> yes, you do!
> 
> there is another question confused me.
> I have seem the command in the scull.c:
> int scull_major = SCULL_MAJOR;and so on.
> 
> module_param(scull_major, int, S_IRUGO); and so on.
> 
> if we don't do "./scull_load scull_major" command.
> 
> we just use "./scull_load"
> 
> it will make scull_major = SCULL_MAJOR default?

Yes.  scull_major is initialized to SCULL_MAJOR every time
that the module is loaded.
The module_param() allows someone to change the value of
scull_major.

---
~Randy
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