test_static_key_base.c (1603B)
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 */ 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 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_LICENSE("GPL");