linux-kernel-module

learning and creating a basic Linux kernel device driver

module -> helloworld_module.c -> MakeFile

basic operations: insmod, lsmod, rmmod

module.h -> module_init(), module_exit()

log_level: printk : linux_headers->include->linux->kern_levels.h: header for kernel log level

used pr_info instead printk: basic printk log level program to understand ring buffer aka dmesg

kernel_space_management:

with __init keyword you can see the cleanup of the functions both start and exit

kernel_space (__init) && basic_loglevel without(__init)

Character_driver: