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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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 | |||
| 64 | int queue_delayed_work(struct workqueue_struct *wq, |
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| 65 | struct delayed_work *dwork, unsigned long delay); |
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| 66 | |||
| 67 | bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay); |
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| 68 | |||
| 69 | |||
| 70 | #define INIT_WORK(_work, _func) \ |
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| 71 | do { \ |
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| 72 | INIT_LIST_HEAD(&(_work)->entry); \ |
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| 73 | (_work)->func = _func; \ |
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| 74 | } while (0) |
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| 75 | |||
| 76 | |||
| 77 | #define INIT_DELAYED_WORK(_work, _func) \ |
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| 78 | do { \ |
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| 79 | INIT_LIST_HEAD(&(_work)->work.entry); \ |
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| 80 | (_work)->work.func = _func; \ |
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| 81 | } while (0) |
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| 82 | |||
| 83 | |||
| 84 | |||
| 85 | #endif /* _LINUX_WORKQUEUE_H */ |