blob: 9f507672afa5f49349338da66a8758c9631629bd [file] [log] [blame]
Thomas Gleixner9c92ab62019-05-29 07:17:56 -07001// SPDX-License-Identifier: GPL-2.0-only
Jason Baron579e1ac2015-07-30 03:59:44 +00002/*
Ingo Molnar2bf9e0a2015-08-03 11:42:57 +02003 * Kernel module for testing static keys.
Jason Baron579e1ac2015-07-30 03:59:44 +00004 *
5 * Copyright 2015 Akamai Technologies Inc. All Rights Reserved
6 *
7 * Authors:
8 * Jason Baron <jbaron@akamai.com>
Jason Baron579e1ac2015-07-30 03:59:44 +00009 */
10
11#include <linux/module.h>
12#include <linux/jump_label.h>
13
14/* old keys */
15struct static_key base_old_true_key = STATIC_KEY_INIT_TRUE;
16EXPORT_SYMBOL_GPL(base_old_true_key);
17struct static_key base_inv_old_true_key = STATIC_KEY_INIT_TRUE;
18EXPORT_SYMBOL_GPL(base_inv_old_true_key);
19struct static_key base_old_false_key = STATIC_KEY_INIT_FALSE;
20EXPORT_SYMBOL_GPL(base_old_false_key);
21struct static_key base_inv_old_false_key = STATIC_KEY_INIT_FALSE;
22EXPORT_SYMBOL_GPL(base_inv_old_false_key);
23
24/* new keys */
25DEFINE_STATIC_KEY_TRUE(base_true_key);
26EXPORT_SYMBOL_GPL(base_true_key);
27DEFINE_STATIC_KEY_TRUE(base_inv_true_key);
28EXPORT_SYMBOL_GPL(base_inv_true_key);
29DEFINE_STATIC_KEY_FALSE(base_false_key);
30EXPORT_SYMBOL_GPL(base_false_key);
31DEFINE_STATIC_KEY_FALSE(base_inv_false_key);
32EXPORT_SYMBOL_GPL(base_inv_false_key);
33
34static void invert_key(struct static_key *key)
35{
36 if (static_key_enabled(key))
37 static_key_disable(key);
38 else
39 static_key_enable(key);
40}
41
Ingo Molnar2bf9e0a2015-08-03 11:42:57 +020042static int __init test_static_key_base_init(void)
Jason Baron579e1ac2015-07-30 03:59:44 +000043{
44 invert_key(&base_inv_old_true_key);
45 invert_key(&base_inv_old_false_key);
46 invert_key(&base_inv_true_key.key);
47 invert_key(&base_inv_false_key.key);
48
49 return 0;
50}
51
Ingo Molnar2bf9e0a2015-08-03 11:42:57 +020052static void __exit test_static_key_base_exit(void)
Jason Baron579e1ac2015-07-30 03:59:44 +000053{
54}
55
Ingo Molnar2bf9e0a2015-08-03 11:42:57 +020056module_init(test_static_key_base_init);
57module_exit(test_static_key_base_exit);
Jason Baron579e1ac2015-07-30 03:59:44 +000058
59MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>");
Jeff Johnson30347492024-06-19 13:59:15 -070060MODULE_DESCRIPTION("Kernel module to support testing static keys");
Jason Baron579e1ac2015-07-30 03:59:44 +000061MODULE_LICENSE("GPL");