1 | // SPDX-License-Identifier: GPL-2.0-only |
---|---|
2 | /* |
3 | * Kernel module for testing static keys. |
4 | * |
5 | * Copyright 2015 Akamai Technologies Inc. All Rights Reserved |
6 | * |
7 | * Authors: |
8 | * Jason Baron <jbaron@akamai.com> |
9 | */ |
10 | |
11 | #include <linux/module.h> |
12 | #include <linux/jump_label.h> |
13 | |
14 | /* old keys */ |
15 | struct static_key base_old_true_key = STATIC_KEY_INIT_TRUE; |
16 | EXPORT_SYMBOL_GPL(base_old_true_key); |
17 | struct static_key base_inv_old_true_key = STATIC_KEY_INIT_TRUE; |
18 | EXPORT_SYMBOL_GPL(base_inv_old_true_key); |
19 | struct static_key base_old_false_key = STATIC_KEY_INIT_FALSE; |
20 | EXPORT_SYMBOL_GPL(base_old_false_key); |
21 | struct static_key base_inv_old_false_key = STATIC_KEY_INIT_FALSE; |
22 | EXPORT_SYMBOL_GPL(base_inv_old_false_key); |
23 | |
24 | /* new keys */ |
25 | DEFINE_STATIC_KEY_TRUE(base_true_key); |
26 | EXPORT_SYMBOL_GPL(base_true_key); |
27 | DEFINE_STATIC_KEY_TRUE(base_inv_true_key); |
28 | EXPORT_SYMBOL_GPL(base_inv_true_key); |
29 | DEFINE_STATIC_KEY_FALSE(base_false_key); |
30 | EXPORT_SYMBOL_GPL(base_false_key); |
31 | DEFINE_STATIC_KEY_FALSE(base_inv_false_key); |
32 | EXPORT_SYMBOL_GPL(base_inv_false_key); |
33 | |
34 | static 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 | |
42 | static int __init test_static_key_base_init(void) |
43 | { |
44 | invert_key(key: &base_inv_old_true_key); |
45 | invert_key(key: &base_inv_old_false_key); |
46 | invert_key(key: &base_inv_true_key.key); |
47 | invert_key(key: &base_inv_false_key.key); |
48 | |
49 | return 0; |
50 | } |
51 | |
52 | static void __exit test_static_key_base_exit(void) |
53 | { |
54 | } |
55 | |
56 | module_init(test_static_key_base_init); |
57 | module_exit(test_static_key_base_exit); |
58 | |
59 | MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>"); |
60 | MODULE_LICENSE("GPL"); |
61 |