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

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Date:	Mon, 1 Nov 2010 17:54:52 +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?

My description is correct or not ?

2010/11/1 tingwei liu <tingw.liu@...il.com>:
> 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。
>
> 2010/11/1 tingwei liu <tingw.liu@...il.com>:
>> What's the meaning of dynamically and statically?
>> You response help me much. Thank you
>>
>> 2010/11/1 Américo Wang <xiyou.wangcong@...il.com>:
>>> On Mon, Nov 01, 2010 at 02:17:23PM +0800, tingwei liu wrote:
>>>>How many params can be accept by kernel module at most?
>>>
>>> If you mean dynamically, these parameters are passed as a whole to kernel,
>>> from the source code, you can see the max length is ~0UL>>1.
>>>
>>> If you mean statically, IOW, the max paramenters you can provide in your module,
>>> this is limited by ELF section size.
>>>
>>> Hope this helps.
>>>
>>
>
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