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Date: Mon, 1 Nov 2010 17:49:53 +0800
Message-ID: <AANLkTikkh+Pif7DuP3p-fH2=5_otX7N0NSjSB2h13yFC@mail.gmail.com>
Subject: Re: How many params can be accept by kernel module at most?
From: tingwei liu <tingw.liu@gmail.com>
To: =?UTF-8?Q?Am=C3=A9rico_Wang?= <xiyou.wangcong@gmail.com>
Cc: linux-kernel@vger.kernel.org
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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@gmail.com>:
> What's the meaning of dynamically and statically?
> You response help me much. Thank you
>
> 2010/11/1 Américo Wang <xiyou.wangcong@gmail.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.
>>
>