Create a Kernel Module simple.

1.Compile kernel module simple.c $make Note: if the compiling succeeds, several files are produced.

2.Load Kernel Module $sudo insmod simple.ko (Check out contents in kernel log buffer.) $dmesg

3.Remove Kernel Module $sudo rmmod simple (Check out contents in kernel log buffer.) $dmesg

simple.c

#include

#include

#include

/* This cis called when the module is loaded. */int simple_init(void)

{

printk(KERN_INFO "Loading Modulen");

return 0;}

/* This function is called when the module is removed. */

void simple_exit(void) {

printk(KERN_INFO "Removing Modulen");

}

Makefile

obj-m += simple.o

all:

make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules

clean:

make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean

Note: Makefile should be in the same directory as simple.c

Screen shot of dmesg after adding and removing the simple module