2 * Kernel module for testing static keys.
4 * Copyright 2015 Akamai Technologies Inc. All Rights Reserved
7 * Jason Baron <jbaron@akamai.com>
9 * This software is licensed under the terms of the GNU General Public
10 * License version 2, as published by the Free Software Foundation, and
11 * may be copied, distributed, and modified under those terms.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 #include <linux/module.h>
20 #include <linux/jump_label.h>
23 struct static_key base_old_true_key = STATIC_KEY_INIT_TRUE;
24 EXPORT_SYMBOL_GPL(base_old_true_key);
25 struct static_key base_inv_old_true_key = STATIC_KEY_INIT_TRUE;
26 EXPORT_SYMBOL_GPL(base_inv_old_true_key);
27 struct static_key base_old_false_key = STATIC_KEY_INIT_FALSE;
28 EXPORT_SYMBOL_GPL(base_old_false_key);
29 struct static_key base_inv_old_false_key = STATIC_KEY_INIT_FALSE;
30 EXPORT_SYMBOL_GPL(base_inv_old_false_key);
33 DEFINE_STATIC_KEY_TRUE(base_true_key);
34 EXPORT_SYMBOL_GPL(base_true_key);
35 DEFINE_STATIC_KEY_TRUE(base_inv_true_key);
36 EXPORT_SYMBOL_GPL(base_inv_true_key);
37 DEFINE_STATIC_KEY_FALSE(base_false_key);
38 EXPORT_SYMBOL_GPL(base_false_key);
39 DEFINE_STATIC_KEY_FALSE(base_inv_false_key);
40 EXPORT_SYMBOL_GPL(base_inv_false_key);
42 static void invert_key(struct static_key *key)
44 if (static_key_enabled(key))
45 static_key_disable(key);
47 static_key_enable(key);
50 static int __init test_static_key_base_init(void)
52 invert_key(&base_inv_old_true_key);
53 invert_key(&base_inv_old_false_key);
54 invert_key(&base_inv_true_key.key);
55 invert_key(&base_inv_false_key.key);
60 static void __exit test_static_key_base_exit(void)
64 module_init(test_static_key_base_init);
65 module_exit(test_static_key_base_exit);
67 MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>");
68 MODULE_LICENSE("GPL");