Date: Thu, 9 Dec 2004 11:42:01 +0800 (CST) From: cm c <beatlelittle@yahoo.com.cn> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-questions@freebsd.org Subject: Re: How to write driver with load time parameter support? Message-ID: <20041209034201.11670.qmail@web15307.mail.bjs.yahoo.com> In-Reply-To: <20041208035709.GF2629@dan.emsphone.com>
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I'm still not very clear the way to do this. Does this method do set the parameters at load time or after load ? Cause Linux can
insmod abc.o param=123;
param is set to 123 when abc is linked to the kernel.
Could u please give me a simple example?
thanks very much!
CcM, a newbie.
Dan Nelson <dnelson@allantgroup.com> wrote:
In the last episode (Dec 08), cm c said:
> I've done most of my driver, but I need some load time parameters
> to be passed to this driver. Under Linux MODULE_PARM() can do
> this job, how can I do this under FBSD?
I think kernel tunables (set in /boot/loader.conf at boot time or via
/bin/kenv at runtime, readable in-kernel via TUNABLE_* macros) are your
best bet here.
--
Dan Nelson
dnelson@allantgroup.com
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