#include <linux/module.h>   /* all kernel modules need this */
#include <linux/init.h>     /* provides initialization routines */

#include <linux/kallsyms.h> 

static char __initdata hellomsg[] = KERN_NOTICE "Hello, Kernel, I'm in\n";
static char __exitdata byemsg[] = KERN_NOTICE "Bye, I'm out\n";

static int print_hello(void)
{
    unsigned long i;
    char *symbol_name;

    printk(hellomsg);

    symbol_name = "free_pages";
    printk("looking up '%s'\n", symbol_name);
    i = kallsyms_lookup_name(symbol_name);
    printk("%s 0x%lx\n", symbol_name, i);

    return 0;
}

int fib(int times, int n1, int n2)
{
    int i = 0;
    int prev = n1;
    int curr = n2;
    int next = 0;

    while (i < times)
    {
        next = (prev + curr);
        prev = curr;
        curr = next;
        i++;
    }

    return next;
}

static int __init start_hello_world(void)
{
    int f_int;
    MODULE_LICENSE("GPL");
    MODULE_AUTHOR("Vincent Batts <vbatts@hashbangbash.com>");
    MODULE_DESCRIPTION("i am just reading headers");
    MODULE_VERSION("1.0");
    print_hello();

    f_int = fib(10000000, 0, 1);
    
    return 0;
}

static void __exit go_away(void)
{
    printk(byemsg);
}

module_init(start_hello_world);
module_exit(go_away);

// vim:set shiftwidth=4 softtabstop=4 expandtab: