Re: library in kernel space

On Sun, 23 Mar 2025, Peter Skvarka wrote:

>
>> You can only load other kernel modules from a kernel module (or the main
>> kernel).
>
> In this case
> when I have two modules where module_1 needs exported functions from 
> module_2.
> Module_2 must be loaded first (i.e. with modload from shell)
> and after it I can load module_1. (if I understand it good)
> Is needed to use something special when compiling both modules to be able to 
> recognize
> that some function is exported and to recognize that this function is present 
> in module_2 ? (linker switches or some macros, etc.)

In module_1 you simply add module_2 to the required list in the
MODULE() macro.

I think you can look at dk_subr module as an example of module_2
to export symbols for the run-time linker to resolve.


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