Searching for particular functions, keywords, header files, etc etc over big source code directory is difficult task for any one. But in Linux everything is easier if you know some tricks. Since it is an open source, you will get many hands to save you for anything.

You may encounter with “extern” keyword often. It becomes prefix of many variables / functions. Its hard to understand them, after a research I will share what I understand, correct me if I am wrong.

When you start writing device driver you will definitely look into this book. I will share some of Kernel functions, Macros, Variables and /proc files needed for Kernel Module building and running.

insmod