1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Kernel module for testing static keys. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright 2015 Akamai Technologies Inc. All Rights Reserved 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Authors: 8*4882a593Smuzhiyun * Jason Baron <jbaron@akamai.com> 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <linux/module.h> 12*4882a593Smuzhiyun #include <linux/jump_label.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun /* old keys */ 15*4882a593Smuzhiyun struct static_key base_old_true_key = STATIC_KEY_INIT_TRUE; 16*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(base_old_true_key); 17*4882a593Smuzhiyun struct static_key base_inv_old_true_key = STATIC_KEY_INIT_TRUE; 18*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(base_inv_old_true_key); 19*4882a593Smuzhiyun struct static_key base_old_false_key = STATIC_KEY_INIT_FALSE; 20*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(base_old_false_key); 21*4882a593Smuzhiyun struct static_key base_inv_old_false_key = STATIC_KEY_INIT_FALSE; 22*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(base_inv_old_false_key); 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /* new keys */ 25*4882a593Smuzhiyun DEFINE_STATIC_KEY_TRUE(base_true_key); 26*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(base_true_key); 27*4882a593Smuzhiyun DEFINE_STATIC_KEY_TRUE(base_inv_true_key); 28*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(base_inv_true_key); 29*4882a593Smuzhiyun DEFINE_STATIC_KEY_FALSE(base_false_key); 30*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(base_false_key); 31*4882a593Smuzhiyun DEFINE_STATIC_KEY_FALSE(base_inv_false_key); 32*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(base_inv_false_key); 33*4882a593Smuzhiyun invert_key(struct static_key * key)34*4882a593Smuzhiyunstatic void invert_key(struct static_key *key) 35*4882a593Smuzhiyun { 36*4882a593Smuzhiyun if (static_key_enabled(key)) 37*4882a593Smuzhiyun static_key_disable(key); 38*4882a593Smuzhiyun else 39*4882a593Smuzhiyun static_key_enable(key); 40*4882a593Smuzhiyun } 41*4882a593Smuzhiyun test_static_key_base_init(void)42*4882a593Smuzhiyunstatic int __init test_static_key_base_init(void) 43*4882a593Smuzhiyun { 44*4882a593Smuzhiyun invert_key(&base_inv_old_true_key); 45*4882a593Smuzhiyun invert_key(&base_inv_old_false_key); 46*4882a593Smuzhiyun invert_key(&base_inv_true_key.key); 47*4882a593Smuzhiyun invert_key(&base_inv_false_key.key); 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun return 0; 50*4882a593Smuzhiyun } 51*4882a593Smuzhiyun test_static_key_base_exit(void)52*4882a593Smuzhiyunstatic void __exit test_static_key_base_exit(void) 53*4882a593Smuzhiyun { 54*4882a593Smuzhiyun } 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun module_init(test_static_key_base_init); 57*4882a593Smuzhiyun module_exit(test_static_key_base_exit); 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>"); 60*4882a593Smuzhiyun MODULE_LICENSE("GPL"); 61