1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_JUMP_LABEL_RATELIMIT_H 2 #ifndef _LINUX_JUMP_LABEL_RATELIMIT_H
3 #define _LINUX_JUMP_LABEL_RATELIMIT_H 3 #define _LINUX_JUMP_LABEL_RATELIMIT_H
4 4
5 #include <linux/jump_label.h> 5 #include <linux/jump_label.h>
6 #include <linux/workqueue.h> 6 #include <linux/workqueue.h>
7 7
8 #if defined(CONFIG_JUMP_LABEL) 8 #if defined(CONFIG_JUMP_LABEL)
9 struct static_key_deferred { 9 struct static_key_deferred {
10 struct static_key key; 10 struct static_key key;
11 unsigned long timeout; 11 unsigned long timeout;
12 struct delayed_work work; 12 struct delayed_work work;
13 }; 13 };
14 14
15 struct static_key_true_deferred { 15 struct static_key_true_deferred {
16 struct static_key_true key; 16 struct static_key_true key;
17 unsigned long timeout; 17 unsigned long timeout;
18 struct delayed_work work; 18 struct delayed_work work;
19 }; 19 };
20 20
21 struct static_key_false_deferred { 21 struct static_key_false_deferred {
22 struct static_key_false key; 22 struct static_key_false key;
23 unsigned long timeout; 23 unsigned long timeout;
24 struct delayed_work work; 24 struct delayed_work work;
25 }; 25 };
26 26
27 #define static_key_slow_dec_deferred(x) 27 #define static_key_slow_dec_deferred(x) \
28 __static_key_slow_dec_deferred(&(x)->k 28 __static_key_slow_dec_deferred(&(x)->key, &(x)->work, (x)->timeout)
29 #define static_branch_slow_dec_deferred(x) 29 #define static_branch_slow_dec_deferred(x) \
30 __static_key_slow_dec_deferred(&(x)->k 30 __static_key_slow_dec_deferred(&(x)->key.key, &(x)->work, (x)->timeout)
31 31
32 #define static_key_deferred_flush(x) 32 #define static_key_deferred_flush(x) \
33 __static_key_deferred_flush((x), &(x)- 33 __static_key_deferred_flush((x), &(x)->work)
34 34
35 extern void 35 extern void
36 __static_key_slow_dec_deferred(struct static_k 36 __static_key_slow_dec_deferred(struct static_key *key,
37 struct delayed_ 37 struct delayed_work *work,
38 unsigned long t 38 unsigned long timeout);
39 extern void __static_key_deferred_flush(void * 39 extern void __static_key_deferred_flush(void *key, struct delayed_work *work);
40 extern void 40 extern void
41 jump_label_rate_limit(struct static_key_deferr 41 jump_label_rate_limit(struct static_key_deferred *key, unsigned long rl);
42 42
43 extern void jump_label_update_timeout(struct w 43 extern void jump_label_update_timeout(struct work_struct *work);
44 44
45 #define DEFINE_STATIC_KEY_DEFERRED_TRUE(name, 45 #define DEFINE_STATIC_KEY_DEFERRED_TRUE(name, rl) \
46 struct static_key_true_deferred name = 46 struct static_key_true_deferred name = { \
47 .key = { STATIC_KEY_I 47 .key = { STATIC_KEY_INIT_TRUE }, \
48 .timeout = (rl), 48 .timeout = (rl), \
49 .work = __DELAYED_WORK_INITIAL 49 .work = __DELAYED_WORK_INITIALIZER((name).work, \
50 50 jump_label_update_timeout, \
51 51 0), \
52 } 52 }
53 53
54 #define DEFINE_STATIC_KEY_DEFERRED_FALSE(name, 54 #define DEFINE_STATIC_KEY_DEFERRED_FALSE(name, rl) \
55 struct static_key_false_deferred name 55 struct static_key_false_deferred name = { \
56 .key = { STATIC_KEY_I 56 .key = { STATIC_KEY_INIT_FALSE }, \
57 .timeout = (rl), 57 .timeout = (rl), \
58 .work = __DELAYED_WORK_INITIAL 58 .work = __DELAYED_WORK_INITIALIZER((name).work, \
59 59 jump_label_update_timeout, \
60 60 0), \
61 } 61 }
62 62
63 #else /* !CONFIG_JUMP_LABEL */ 63 #else /* !CONFIG_JUMP_LABEL */
64 struct static_key_deferred { 64 struct static_key_deferred {
65 struct static_key key; 65 struct static_key key;
66 }; 66 };
67 struct static_key_true_deferred { 67 struct static_key_true_deferred {
68 struct static_key_true key; 68 struct static_key_true key;
69 }; 69 };
70 struct static_key_false_deferred { 70 struct static_key_false_deferred {
71 struct static_key_false key; 71 struct static_key_false key;
72 }; 72 };
73 #define DEFINE_STATIC_KEY_DEFERRED_TRUE(name, 73 #define DEFINE_STATIC_KEY_DEFERRED_TRUE(name, rl) \
74 struct static_key_true_deferred name = 74 struct static_key_true_deferred name = { STATIC_KEY_TRUE_INIT }
75 #define DEFINE_STATIC_KEY_DEFERRED_FALSE(name, 75 #define DEFINE_STATIC_KEY_DEFERRED_FALSE(name, rl) \
76 struct static_key_false_deferred name 76 struct static_key_false_deferred name = { STATIC_KEY_FALSE_INIT }
77 77
78 #define static_branch_slow_dec_deferred(x) 78 #define static_branch_slow_dec_deferred(x) static_branch_dec(&(x)->key)
79 79
80 static inline void static_key_slow_dec_deferre 80 static inline void static_key_slow_dec_deferred(struct static_key_deferred *key)
81 { 81 {
82 STATIC_KEY_CHECK_USE(key); 82 STATIC_KEY_CHECK_USE(key);
83 static_key_slow_dec(&key->key); 83 static_key_slow_dec(&key->key);
84 } 84 }
85 static inline void static_key_deferred_flush(v 85 static inline void static_key_deferred_flush(void *key)
86 { 86 {
87 STATIC_KEY_CHECK_USE(key); 87 STATIC_KEY_CHECK_USE(key);
88 } 88 }
89 static inline void 89 static inline void
90 jump_label_rate_limit(struct static_key_deferr 90 jump_label_rate_limit(struct static_key_deferred *key,
91 unsigned long rl) 91 unsigned long rl)
92 { 92 {
93 STATIC_KEY_CHECK_USE(key); 93 STATIC_KEY_CHECK_USE(key);
94 } 94 }
95 #endif /* CONFIG_JUMP_LABEL */ 95 #endif /* CONFIG_JUMP_LABEL */
96 96
97 #define static_branch_deferred_inc(x) static 97 #define static_branch_deferred_inc(x) static_branch_inc(&(x)->key)
98 98
99 #endif /* _LINUX_JUMP_LABEL_RATELIMIT_H */ 99 #endif /* _LINUX_JUMP_LABEL_RATELIMIT_H */
100 100
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