Commit | Line | Data |
---|---|---|
ea138446 TH |
1 | /* |
2 | * kernel/workqueue_internal.h | |
3 | * | |
4 | * Workqueue internal header file. Only to be included by workqueue and | |
5 | * core kernel subsystems. | |
6 | */ | |
7 | #ifndef _KERNEL_WORKQUEUE_INTERNAL_H | |
8 | #define _KERNEL_WORKQUEUE_INTERNAL_H | |
9 | ||
2eaebdb3 | 10 | #include <linux/workqueue.h> |
84b233ad | 11 | #include <linux/kthread.h> |
2eaebdb3 | 12 | |
2eaebdb3 TH |
13 | struct worker_pool; |
14 | ||
15 | /* | |
16 | * The poor guys doing the actual heavy lifting. All on-duty workers are | |
17 | * either serving the manager role, on idle list or on busy hash. For | |
18 | * details on the locking annotation (L, I, X...), refer to workqueue.c. | |
19 | * | |
20 | * Only to be used in workqueue and async. | |
21 | */ | |
22 | struct worker { | |
23 | /* on idle list while idle, on busy hash table while busy */ | |
24 | union { | |
25 | struct list_head entry; /* L: while idle */ | |
26 | struct hlist_node hentry; /* L: while busy */ | |
27 | }; | |
28 | ||
29 | struct work_struct *current_work; /* L: work being processed */ | |
30 | work_func_t current_func; /* L: current_work's fn */ | |
112202d9 | 31 | struct pool_workqueue *current_pwq; /* L: current_work's pwq */ |
2eaebdb3 TH |
32 | struct list_head scheduled; /* L: scheduled works */ |
33 | struct task_struct *task; /* I: worker task */ | |
34 | struct worker_pool *pool; /* I: the associated pool */ | |
35 | /* 64 bytes boundary on 64bit, 32 on 32bit */ | |
36 | unsigned long last_active; /* L: last active timestamp */ | |
37 | unsigned int flags; /* X: flags */ | |
38 | int id; /* I: worker id */ | |
39 | ||
40 | /* for rebinding worker to CPU */ | |
41 | struct work_struct rebind_work; /* L: for busy worker */ | |
42 | ||
43 | /* used only by rescuers to point to the target workqueue */ | |
44 | struct workqueue_struct *rescue_wq; /* I: the workqueue to rescue */ | |
45 | }; | |
46 | ||
84b233ad TH |
47 | /** |
48 | * current_wq_worker - return struct worker if %current is a workqueue worker | |
49 | */ | |
50 | static inline struct worker *current_wq_worker(void) | |
51 | { | |
52 | if (current->flags & PF_WQ_WORKER) | |
53 | return kthread_data(current); | |
54 | return NULL; | |
55 | } | |
56 | ||
ea138446 TH |
57 | /* |
58 | * Scheduler hooks for concurrency managed workqueue. Only to be used from | |
59 | * sched.c and workqueue.c. | |
60 | */ | |
61 | void wq_worker_waking_up(struct task_struct *task, unsigned int cpu); | |
62 | struct task_struct *wq_worker_sleeping(struct task_struct *task, | |
63 | unsigned int cpu); | |
64 | ||
65 | #endif /* _KERNEL_WORKQUEUE_INTERNAL_H */ |