LXR linux/lib/test

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * This module emits "Hello, world" on printk when loaded.
   4 *
   5 * It is designed to be used for basic evaluation of the module loading
   6 * subsystem (for example when validating module signing/verification). It
   7 * lacks any extra dependencies, and will not normally be loaded by the
   8 * system unless explicitly requested by name.
   9 */
  10
  11#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  12
  13#include <linux/init.h>
  14#include <linux/module.h>
  15#include <linux/printk.h>
  16
  17static int __init test_module_init(void)
  18{
  19        pr_warn("Hello, world\n");
  20
  21        return 0;
  22}
  23
  24module_init(test_module_init);
  25
  26static void __exit test_module_exit(void)
  27{
  28        pr_warn("Goodbye\n");
  29}
  30
  31module_exit(test_module_exit);
  32
  33MODULE_AUTHOR("Kees Cook <keescook@chromium.org>");
  34MODULE_LICENSE("GPL");
  35