LKMPG/older_versions/4.7.4/examples/start.c

/*
 *  start.c - Illustration of multi filed modules
 */

#include <linux/kernel.h>       /* We're doing kernel work */
#include <linux/module.h>       /* Specifically, a module */

int init_module(void)
{
    printk(KERN_INFO "Hello, world - this is the kernel speaking\n");
    return 0;
}