69 lines
2 KiB
C
69 lines
2 KiB
C
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/*
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* Kernel module for testing static keys.
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*
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* Copyright 2015 Akamai Technologies Inc. All Rights Reserved
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*
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* Authors:
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* Jason Baron <jbaron@akamai.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/jump_label.h>
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/* old keys */
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struct static_key base_old_true_key = STATIC_KEY_INIT_TRUE;
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EXPORT_SYMBOL_GPL(base_old_true_key);
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struct static_key base_inv_old_true_key = STATIC_KEY_INIT_TRUE;
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EXPORT_SYMBOL_GPL(base_inv_old_true_key);
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struct static_key base_old_false_key = STATIC_KEY_INIT_FALSE;
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EXPORT_SYMBOL_GPL(base_old_false_key);
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struct static_key base_inv_old_false_key = STATIC_KEY_INIT_FALSE;
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EXPORT_SYMBOL_GPL(base_inv_old_false_key);
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/* new keys */
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DEFINE_STATIC_KEY_TRUE(base_true_key);
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EXPORT_SYMBOL_GPL(base_true_key);
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DEFINE_STATIC_KEY_TRUE(base_inv_true_key);
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EXPORT_SYMBOL_GPL(base_inv_true_key);
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DEFINE_STATIC_KEY_FALSE(base_false_key);
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EXPORT_SYMBOL_GPL(base_false_key);
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DEFINE_STATIC_KEY_FALSE(base_inv_false_key);
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EXPORT_SYMBOL_GPL(base_inv_false_key);
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static void invert_key(struct static_key *key)
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{
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if (static_key_enabled(key))
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static_key_disable(key);
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else
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static_key_enable(key);
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}
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static int __init test_static_key_base_init(void)
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{
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invert_key(&base_inv_old_true_key);
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invert_key(&base_inv_old_false_key);
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invert_key(&base_inv_true_key.key);
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invert_key(&base_inv_false_key.key);
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return 0;
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}
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static void __exit test_static_key_base_exit(void)
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{
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}
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module_init(test_static_key_base_init);
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module_exit(test_static_key_base_exit);
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MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>");
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MODULE_LICENSE("GPL");
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