1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_JUMP_LABEL_RATELIMIT_H
3 #define _LINUX_JUMP_LABEL_RATELIMIT_H
4 
5 #include <linux/jump_label.h>
6 #include <linux/workqueue.h>
7 
8 #if defined(CONFIG_JUMP_LABEL)
9 struct static_key_deferred {
10 	struct static_key key;
11 	unsigned long timeout;
12 	struct delayed_work work;
13 };
14 
15 extern void static_key_slow_dec_deferred(struct static_key_deferred *key);
16 extern void static_key_deferred_flush(struct static_key_deferred *key);
17 extern void
18 jump_label_rate_limit(struct static_key_deferred *key, unsigned long rl);
19 
20 #else	/* !CONFIG_JUMP_LABEL */
21 struct static_key_deferred {
22 	struct static_key  key;
23 };
static_key_slow_dec_deferred(struct static_key_deferred * key)24 static inline void static_key_slow_dec_deferred(struct static_key_deferred *key)
25 {
26 	STATIC_KEY_CHECK_USE(key);
27 	static_key_slow_dec(&key->key);
28 }
static_key_deferred_flush(struct static_key_deferred * key)29 static inline void static_key_deferred_flush(struct static_key_deferred *key)
30 {
31 	STATIC_KEY_CHECK_USE(key);
32 }
33 static inline void
jump_label_rate_limit(struct static_key_deferred * key,unsigned long rl)34 jump_label_rate_limit(struct static_key_deferred *key,
35 		unsigned long rl)
36 {
37 	STATIC_KEY_CHECK_USE(key);
38 }
39 #endif	/* CONFIG_JUMP_LABEL */
40 #endif	/* _LINUX_JUMP_LABEL_RATELIMIT_H */
41