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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Kernel module for testing static keys.4 *5 * Copyright 2015 Akamai Technologies Inc. All Rights Reserved6 *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 */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 else39 static_key_enable(key);40}41 42static int __init test_static_key_base_init(void)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 52static void __exit test_static_key_base_exit(void)53{54}55 56module_init(test_static_key_base_init);57module_exit(test_static_key_base_exit);58 59MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>");60MODULE_DESCRIPTION("Kernel module to support testing static keys");61MODULE_LICENSE("GPL");62