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

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Date:	Mon, 1 Nov 2010 17:49:53 +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?

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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