linux-kernel - Re: How many params can be accept by kernel module at most?

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Date:	Mon, 1 Nov 2010 17:59:22 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	tingwei liu <tingw.liu@...il.com>
Cc:	Américo Wang <xiyou.wangcong@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: How many params can be accept by kernel module at most?

On Mon, Nov 01, 2010 at 05:49:53PM +0800, tingwei liu wrote:
>The params are transferred by command line. And the params are all in
>program statically. So the stack size determine the params number. For
>example: stack size is 4K,and params are unsigned int type with 4
>bytes,so the max number of params is 1 thousand。
>

Please don't top-reply.

That is not true, the parameters are passed via 'uargs' of init_module()
dynamically, this is when you invoke modprobe/insmod.

For your own kernel module, you may use module_param() to provide
parameters, the max of this is limited to the size of ELF section size,
since they are stored in "__param" section.
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