src/cmd/cos_dkms/actions/testdata/source-tree/mymodule-1.0/mymodule.c

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>

static int __init mymodule_init(void) {
  printk(KERN_INFO "My module initialized\n");

#if defined(CONFIG_MYMODULE_DEBUG)
  printk(KERN_INFO "Debugging On\n");
#else
  printk(KERN_INFO "Debugging Off\n");
#endif

  return 0;
}

static void __exit mymodule_exit(void) {
  printk(KERN_INFO "My module exiting\n");
}

module_init(mymodule_init);
module_exit(mymodule_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Edward Hyun-koo Jee <edjee@google.com>");
MODULE_DESCRIPTION("Simple kernel module example");