This source file includes following definitions.
- rcuwait_init
1
2 #ifndef _LINUX_RCUWAIT_H_
3 #define _LINUX_RCUWAIT_H_
4
5 #include <linux/rcupdate.h>
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7
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14
15 struct rcuwait {
16 struct task_struct __rcu *task;
17 };
18
19 #define __RCUWAIT_INITIALIZER(name) \
20 { .task = NULL, }
21
22 static inline void rcuwait_init(struct rcuwait *w)
23 {
24 w->task = NULL;
25 }
26
27 extern void rcuwait_wake_up(struct rcuwait *w);
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32
33 #define rcuwait_wait_event(w, condition) \
34 ({ \
35 rcu_assign_pointer((w)->task, current); \
36 for (;;) { \
37
38
39
40 \
41 set_current_state(TASK_UNINTERRUPTIBLE); \
42 if (condition) \
43 break; \
44 \
45 schedule(); \
46 } \
47 \
48 WRITE_ONCE((w)->task, NULL); \
49 __set_current_state(TASK_RUNNING); \
50 })
51
52 #endif