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From: "Américo Wang" <xiyou.wangcong@gmail.com>
To: tingwei liu <tingw.liu@gmail.com>
Cc: "Américo Wang" <xiyou.wangcong@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: How many params can be accept by kernel module at most?
Date: Mon, 1 Nov 2010 17:59:22 +0800	[thread overview]
Message-ID: <20101101095922.GE6023@cr0.nay.redhat.com> (raw)
In-Reply-To: <AANLkTikkh+Pif7DuP3p-fH2=5_otX7N0NSjSB2h13yFC@mail.gmail.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.

  parent reply	other threads:[~2010-11-01  9:54 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-01  6:17 How many params can be accept by kernel module at most? tingwei liu
2010-11-01  9:29 ` Américo Wang
2010-11-01  9:32   ` tingwei liu
2010-11-01  9:49     ` tingwei liu
2010-11-01  9:54       ` tingwei liu
2010-11-01  9:59       ` Américo Wang [this message]
2010-11-01 13:42         ` tingwei liu
2010-11-02  1:40           ` Thiago Farina

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