Kernel writing 0

Compile the kernel 0 -- general Linux technology-Linux programming and kernel information. The following is a detailed description. A simple helloworld example:

Source code:
# Include
# Include

Int init_module (void)
{
Printk (KERN_ALERT "Marry has a little lamb! \ N ");
Return 0;
}

Void cleanup_module (void)
{
Printk (KERN_ALERT "Good bye, boys and girls! \ N ");
}

Makefile:
Obj-m + = my1.o

Compile command:
Make-C/usr/src/kernels/2.6.9-42. EL-smp-i686/SUBDIRS = $ PWD modules

Insert the module command in the console:
Insmod./my1.ko

Commands for the unmount module in the console:
Rmmod my1

Everything went well, OK.