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