Hello Friends
I made new simple 'Hello World' module
*
* hello-1.c - The simplest kernel module.
*/
#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_INFO */
int init_module(void)
{
printk(KERN_INFO "Hello world 1.\n");
/*
* A non 0 return means init_module failed; module can't be loaded.
*/
return 0;
}
void cleanup_module(void)
{
printk(KERN_INFO "Goodbye world 1.\n");
}
then i write Makefile
obj-m += hello-1.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
after that i run the make command
after that insmod ./hello-1.ko
module is inserted ok
when i run cat /proc/modules
it shows that my new module is added but with (P) marked ok
when i restart my PC to see weather my module is printing ' Hello World ' or not its not res poncing any thing
when PC completely start again i run /proc/modules
then my newly added module is missing
how to add module permanently in the kernel