forked from luck/tmp_suning_uos_patched
2bf9e0ab08
The 'jump label' self-test is in reality testing static keys - rename things accordingly. Also prettify the code in various places while at it. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jason Baron <jbaron@akamai.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: benh@kernel.crashing.org Cc: bp@alien8.de Cc: davem@davemloft.net Cc: ddaney@caviumnetworks.com Cc: heiko.carstens@de.ibm.com Cc: linux-kernel@vger.kernel.org Cc: liuj97@gmail.com Cc: luto@amacapital.net Cc: michael@ellerman.id.au Cc: rabin@rab.in Cc: ralf@linux-mips.org Cc: rostedt@goodmis.org Cc: vbabka@suse.cz Cc: will.deacon@arm.com Link: http://lkml.kernel.org/r/0c091ecebd78a879ed8a71835d205a691a75ab4e.1438227999.git.jbaron@akamai.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/*
|
|
* 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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static void __exit test_static_key_base_exit(void)
|
|
{
|
|
}
|
|
|
|
module_init(test_static_key_base_init);
|
|
module_exit(test_static_key_base_exit);
|
|
|
|
MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>");
|
|
MODULE_LICENSE("GPL");
|