linux-kernel - Re: Checking module parameters

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Date:	Mon, 19 Jan 2009 11:19:34 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Nick Craig-Wood <nick@...ig-wood.com>
CC:	David Wagner <daw@...berkeley.edu>, linux-kernel@...r.kernel.org
Subject: Re: Checking module parameters

Nick Craig-Wood wrote:
> David Wagner <daw@...berkeley.edu> wrote:
>>  Is there a way to tell what options have been applied to a currently
>>  loaded kernel module?
>> 
>>  I'm trying to force libata to use 1.5Gbps rather than 3Gbps,
...
> I had to do this recently (under debian I ended up putting
> "libata force=1.5Gbps" into /etc/modules)
> 
> You can check it is working by looking for something like this in the log
> 
> [    2.345058] ata1: FORCE: PHY spd limit set to 1.5Gbps
> [    2.345058] ata1: SATA max UDMA/133 abar m2048@...b106000 port 0xfb106100 irq 218

There is also /sys/module/*/parameters/* which can be read and in some
cases even be written.
-- 
Stefan Richter
-=====-==--= ---= =--==
http://arcgraph.de/sr/
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