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Rev | Author | Line No. | Line |
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3482 | Serge | 1 | #ifndef _LINUX_WORKQUEUE_H |
2 | #define _LINUX_WORKQUEUE_H |
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3 | |||
4 | #include |
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5 | #include |
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6 | |||
7 | struct work_struct; |
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8 | typedef void (*work_func_t)(struct work_struct *work); |
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9 | |||
10 | /* |
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11 | * Workqueue flags and constants. For details, please refer to |
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12 | * Documentation/workqueue.txt. |
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13 | */ |
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14 | enum { |
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15 | WQ_NON_REENTRANT = 1 << 0, /* guarantee non-reentrance */ |
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16 | WQ_UNBOUND = 1 << 1, /* not bound to any cpu */ |
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17 | WQ_FREEZABLE = 1 << 2, /* freeze during suspend */ |
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18 | WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */ |
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19 | WQ_HIGHPRI = 1 << 4, /* high priority */ |
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20 | WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */ |
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21 | |||
22 | WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */ |
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23 | WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */ |
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24 | |||
25 | WQ_MAX_ACTIVE = 512, /* I like 512, better ideas? */ |
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26 | WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */ |
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27 | WQ_DFL_ACTIVE = WQ_MAX_ACTIVE / 2, |
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28 | }; |
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29 | |||
30 | |||
31 | struct workqueue_struct { |
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32 | spinlock_t lock; |
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33 | struct list_head worklist; |
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34 | struct list_head delayed_worklist; |
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35 | }; |
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36 | |||
37 | struct work_struct { |
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38 | struct list_head entry; |
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39 | struct workqueue_struct *data; |
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40 | work_func_t func; |
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41 | }; |
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42 | |||
43 | struct delayed_work { |
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44 | struct work_struct work; |
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45 | unsigned int delay; |
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46 | }; |
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47 | |||
48 | static inline struct delayed_work *to_delayed_work(struct work_struct *work) |
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49 | { |
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50 | return container_of(work, struct delayed_work, work); |
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51 | } |
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52 | |||
53 | extern struct workqueue_struct *system_wq; |
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54 | |||
55 | void run_workqueue(struct workqueue_struct *cwq); |
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56 | |||
57 | struct workqueue_struct *alloc_workqueue_key(const char *fmt, |
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58 | unsigned int flags, int max_active); |
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59 | |||
60 | |||
61 | #define alloc_ordered_workqueue(fmt, flags, args...) \ |
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62 | alloc_workqueue(fmt, WQ_UNBOUND | (flags), 1, ##args) |
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63 | |||
4125 | Serge | 64 | bool queue_work(struct workqueue_struct *wq, struct work_struct *work); |
3482 | Serge | 65 | int queue_delayed_work(struct workqueue_struct *wq, |
66 | struct delayed_work *dwork, unsigned long delay); |
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67 | |||
68 | bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay); |
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69 | |||
70 | |||
71 | #define INIT_WORK(_work, _func) \ |
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72 | do { \ |
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73 | INIT_LIST_HEAD(&(_work)->entry); \ |
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74 | (_work)->func = _func; \ |
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75 | } while (0) |
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76 | |||
77 | |||
78 | #define INIT_DELAYED_WORK(_work, _func) \ |
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79 | do { \ |
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80 | INIT_LIST_HEAD(&(_work)->work.entry); \ |
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81 | (_work)->work.func = _func; \ |
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82 | } while (0) |
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83 | |||
4125 | Serge | 84 | static inline bool schedule_work(struct work_struct *work) |
85 | { |
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86 | return queue_work(system_wq, work); |
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87 | } |
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3482 | Serge | 88 | |
89 | |||
90 | #endif /* _LINUX_WORKQUEUE_H */><>><>><>><>><>><>><>><> |