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

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Message-ID: <AANLkTi=_iawjarxDF8wghrmN4uZ4oFNYeX_K-sqk0ZBO@mail.gmail.com>
Date:	Mon, 1 Nov 2010 21:42:39 +0800
From:	tingwei liu <tingw.liu@...il.com>
To:	Américo Wang <xiyou.wangcong@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: How many params can be accept by kernel module at most?

2010/11/1 Américo Wang <xiyou.wangcong@...il.com>:
> 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.
>

I really use module_param() to provide parameters. How much of the ELF
section size? How can I find the document of the ELF.
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