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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5270 | serge | 1 | /* |
| 2 | * workqueue.h --- work queue handling for Linux. |
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| 3 | */ |
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| 4 | |||
| 3482 | Serge | 5 | #ifndef _LINUX_WORKQUEUE_H |
| 6 | #define _LINUX_WORKQUEUE_H |
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| 7 | |||
| 8 | #include |
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| 5270 | serge | 9 | #include |
| 10 | #include |
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| 11 | #include |
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| 12 | |||
| 3482 | Serge | 13 | #include |
| 5270 | serge | 14 | struct workqueue_struct; |
| 3482 | Serge | 15 | |
| 16 | struct work_struct; |
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| 17 | typedef void (*work_func_t)(struct work_struct *work); |
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| 5270 | serge | 18 | void __stdcall delayed_work_timer_fn(unsigned long __data); |
| 3482 | Serge | 19 | |
| 20 | /* |
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| 21 | * Workqueue flags and constants. For details, please refer to |
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| 22 | * Documentation/workqueue.txt. |
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| 23 | */ |
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| 24 | enum { |
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| 25 | WQ_NON_REENTRANT = 1 << 0, /* guarantee non-reentrance */ |
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| 26 | WQ_UNBOUND = 1 << 1, /* not bound to any cpu */ |
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| 27 | WQ_FREEZABLE = 1 << 2, /* freeze during suspend */ |
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| 28 | WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */ |
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| 29 | WQ_HIGHPRI = 1 << 4, /* high priority */ |
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| 30 | WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */ |
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| 31 | |||
| 32 | WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */ |
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| 33 | WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */ |
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| 34 | |||
| 35 | WQ_MAX_ACTIVE = 512, /* I like 512, better ideas? */ |
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| 36 | WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */ |
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| 37 | WQ_DFL_ACTIVE = WQ_MAX_ACTIVE / 2, |
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| 38 | }; |
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| 39 | |||
| 40 | |||
| 41 | struct workqueue_struct { |
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| 42 | spinlock_t lock; |
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| 43 | struct list_head worklist; |
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| 44 | struct list_head delayed_worklist; |
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| 45 | }; |
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| 46 | |||
| 47 | struct work_struct { |
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| 48 | struct list_head entry; |
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| 49 | struct workqueue_struct *data; |
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| 50 | work_func_t func; |
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| 5270 | serge | 51 | #ifdef CONFIG_LOCKDEP |
| 52 | struct lockdep_map lockdep_map; |
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| 53 | #endif |
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| 3482 | Serge | 54 | }; |
| 55 | |||
| 56 | struct delayed_work { |
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| 57 | struct work_struct work; |
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| 58 | unsigned int delay; |
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| 59 | }; |
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| 60 | |||
| 61 | static inline struct delayed_work *to_delayed_work(struct work_struct *work) |
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| 62 | { |
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| 63 | return container_of(work, struct delayed_work, work); |
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| 64 | } |
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| 65 | |||
| 66 | extern struct workqueue_struct *system_wq; |
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| 67 | |||
| 68 | void run_workqueue(struct workqueue_struct *cwq); |
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| 69 | |||
| 70 | struct workqueue_struct *alloc_workqueue_key(const char *fmt, |
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| 71 | unsigned int flags, int max_active); |
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| 72 | |||
| 73 | |||
| 74 | #define alloc_ordered_workqueue(fmt, flags, args...) \ |
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| 75 | alloc_workqueue(fmt, WQ_UNBOUND | (flags), 1, ##args) |
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| 76 | |||
| 4125 | Serge | 77 | bool queue_work(struct workqueue_struct *wq, struct work_struct *work); |
| 3482 | Serge | 78 | int queue_delayed_work(struct workqueue_struct *wq, |
| 79 | struct delayed_work *dwork, unsigned long delay); |
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| 80 | |||
| 81 | bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay); |
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| 82 | |||
| 83 | |||
| 84 | #define INIT_WORK(_work, _func) \ |
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| 85 | do { \ |
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| 86 | INIT_LIST_HEAD(&(_work)->entry); \ |
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| 87 | (_work)->func = _func; \ |
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| 88 | } while (0) |
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| 89 | |||
| 90 | |||
| 91 | #define INIT_DELAYED_WORK(_work, _func) \ |
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| 92 | do { \ |
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| 93 | INIT_LIST_HEAD(&(_work)->work.entry); \ |
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| 94 | (_work)->work.func = _func; \ |
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| 95 | } while (0) |
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| 96 | |||
| 4125 | Serge | 97 | static inline bool schedule_work(struct work_struct *work) |
| 98 | { |
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| 99 | return queue_work(system_wq, work); |
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| 100 | } |
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| 3482 | Serge | 101 | |
| 102 | |||
| 103 | #endif /* _LINUX_WORKQUEUE_H */ |