Thomas Gleixner | 9c92ab6 | 2019-05-29 07:17:56 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Jason Baron | 579e1ac | 2015-07-30 03:59:44 +0000 | [diff] [blame] | 2 | /* |
Ingo Molnar | 2bf9e0a | 2015-08-03 11:42:57 +0200 | [diff] [blame] | 3 | * Kernel module for testing static keys. |
Jason Baron | 579e1ac | 2015-07-30 03:59:44 +0000 | [diff] [blame] | 4 | * |
| 5 | * Copyright 2015 Akamai Technologies Inc. All Rights Reserved |
| 6 | * |
| 7 | * Authors: |
| 8 | * Jason Baron <jbaron@akamai.com> |
Jason Baron | 579e1ac | 2015-07-30 03:59:44 +0000 | [diff] [blame] | 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 | |
Ingo Molnar | 2bf9e0a | 2015-08-03 11:42:57 +0200 | [diff] [blame] | 42 | static int __init test_static_key_base_init(void) |
Jason Baron | 579e1ac | 2015-07-30 03:59:44 +0000 | [diff] [blame] | 43 | { |
| 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 Molnar | 2bf9e0a | 2015-08-03 11:42:57 +0200 | [diff] [blame] | 52 | static void __exit test_static_key_base_exit(void) |
Jason Baron | 579e1ac | 2015-07-30 03:59:44 +0000 | [diff] [blame] | 53 | { |
| 54 | } |
| 55 | |
Ingo Molnar | 2bf9e0a | 2015-08-03 11:42:57 +0200 | [diff] [blame] | 56 | module_init(test_static_key_base_init); |
| 57 | module_exit(test_static_key_base_exit); |
Jason Baron | 579e1ac | 2015-07-30 03:59:44 +0000 | [diff] [blame] | 58 | |
| 59 | MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>"); |
Jeff Johnson | 3034749 | 2024-06-19 13:59:15 -0700 | [diff] [blame] | 60 | MODULE_DESCRIPTION("Kernel module to support testing static keys"); |
Jason Baron | 579e1ac | 2015-07-30 03:59:44 +0000 | [diff] [blame] | 61 | MODULE_LICENSE("GPL"); |