call a kernel module function from program at user space

Question

I developed a kernel module and some functions on it. Now i need to develop a program in the user space and call some functions which are in the kernel module.

I als

Answer 1

You seem to be missing the point of kernel and userland separation. If your user program could modify data inside the kernel directly, that would quickly lead to disaster.

There's only one conventional way for a user program to explicitly request services from the kernel - make a system call.

There are also traps and some Linux-specific userland-kernel communication mechanisms, but those are not relevant here.