Saving kernel module parameters settings

Saving kernel module parameters settings

[Nuno Santos]

Hi,

Is there any mechanism to save kernel module parameters/settings in a 
persistent way?

Thanks,

With my best regards,

Nuno

Re: Saving kernel module parameters settings

[Dmitry Torokhov]

On Mon, Nov 21, 2011 at 09:59:16AM +0000, Nuno Santos wrote:
> Hi,
> 
> Is there any mechanism to save kernel module parameters/settings in
> a persistent way?
> 

If kernel module is built-in then you'd have to adjust kernel command
line. If module is built as a loadable module then you can stick needed
settings in a file in /etc/modprobe.d/

Depending on the parameters (i.e. if they programmed to take effect
immediately - as opposed to, for example, only during new device
binding) you can have a program adjust them after you boot.

Thanks.

-- 
Dmitry

Re: Saving kernel module parameters settings

[Nuno Santos]

Hi Dimitry,

Thanks for your reply.

Just to contextualize. I ended up implementing the communication between 
userspace and kernel space with binary attributes. I have only needed to 
implement two of them.

One of those binary attributes is responsible for getting the state to 
be shown on controlpanel and setting the state back to the device based 
on control panel changes.

Basicly, what I need is to have a copy of that binary attribute saved in 
order to load it into module internal state variable when module loads.

Do you think is possible to achieve this goal?

Thanks,

With my best regards,

Nuno


On 11/21/2011 05:30 PM, Dmitry Torokhov wrote:
> On Mon, Nov 21, 2011 at 09:59:16AM +0000, Nuno Santos wrote:
>> Hi,
>>
>> Is there any mechanism to save kernel module parameters/settings in
>> a persistent way?
>>
> If kernel module is built-in then you'd have to adjust kernel command
> line. If module is built as a loadable module then you can stick needed
> settings in a file in /etc/modprobe.d/
>
> Depending on the parameters (i.e. if they programmed to take effect
> immediately - as opposed to, for example, only during new device
> binding) you can have a program adjust them after you boot.
>
> Thanks.
>