Make a system call to get list of processes

Question

I\'m new on modules programming and I need to make a system call to retrieve the system processes and show how much CPU they are consuming.

How can I make this call?

Answer 1

There are syscalls for that, called open, and read. The information of all processes are all kept in /proc/{pid} directories. You can gather process information by reading corresponding files.

More explained here: http://www.tldp.org/LDP/Linux-Filesystem-Hierarchy/html/proc.html