arguments of mknod command
 

hi!!
i want to send some information from user space to kernel.
can somebody please tell what MAJOR and MINOR numbers should i use to create a file in the /dev directory for this purpose.

Your question makes no sense. What information do you want to send to which component of the kernel?

i want the user process to send its PID to a kernel module.

Which kernel module is interested in a random process' PID?

i am writing my own kernel module and i just want the user process to tell its pid to the kernel module.
And just to answer your question my kernel module is very much interested in random things.