cregit-Linux how code gets into the kernel

Release 4.13 lib/test_static_key_base.c

Directory: lib
/*
 * Kernel module for testing static keys.
 *
 * Copyright 2015 Akamai Technologies Inc. All Rights Reserved
 *
 * Authors:
 *      Jason Baron       <jbaron@akamai.com>
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/module.h>
#include <linux/jump_label.h>

/* old keys */

struct static_key base_old_true_key = STATIC_KEY_INIT_TRUE;

EXPORT_SYMBOL_GPL(base_old_true_key);

struct static_key base_inv_old_true_key = STATIC_KEY_INIT_TRUE;

EXPORT_SYMBOL_GPL(base_inv_old_true_key);

struct static_key base_old_false_key = STATIC_KEY_INIT_FALSE;

EXPORT_SYMBOL_GPL(base_old_false_key);

struct static_key base_inv_old_false_key = STATIC_KEY_INIT_FALSE;

EXPORT_SYMBOL_GPL(base_inv_old_false_key);

/* new keys */

DEFINE_STATIC_KEY_TRUE(base_true_key);

EXPORT_SYMBOL_GPL(base_true_key);

DEFINE_STATIC_KEY_TRUE(base_inv_true_key);

EXPORT_SYMBOL_GPL(base_inv_true_key);

DEFINE_STATIC_KEY_FALSE(base_false_key);

EXPORT_SYMBOL_GPL(base_false_key);

DEFINE_STATIC_KEY_FALSE(base_inv_false_key);

EXPORT_SYMBOL_GPL(base_inv_false_key);


static void invert_key(struct static_key *key) { if (static_key_enabled(key)) static_key_disable(key); else static_key_enable(key); }

Contributors

PersonTokensPropCommitsCommitProp
Jason Baron29100.00%1100.00%
Total29100.00%1100.00%


static int __init test_static_key_base_init(void) { invert_key(&base_inv_old_true_key); invert_key(&base_inv_old_false_key); invert_key(&base_inv_true_key.key); invert_key(&base_inv_false_key.key); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Jason Baron3997.50%150.00%
Ingo Molnar12.50%150.00%
Total40100.00%2100.00%


static void __exit test_static_key_base_exit(void) { }

Contributors

PersonTokensPropCommitsCommitProp
Jason Baron787.50%150.00%
Ingo Molnar112.50%150.00%
Total8100.00%2100.00%

module_init(test_static_key_base_init); module_exit(test_static_key_base_exit); MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>"); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Jason Baron18597.37%150.00%
Ingo Molnar52.63%150.00%
Total190100.00%2100.00%
Directory: lib
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