2 * kernel/workqueue_internal.h
4 * Workqueue internal header file. Only to be included by workqueue and
5 * core kernel subsystems.
7 #ifndef _KERNEL_WORKQUEUE_INTERNAL_H
8 #define _KERNEL_WORKQUEUE_INTERNAL_H
10 #include <linux/workqueue.h>
11 #include <linux/kthread.h>
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.
20 * Only to be used in workqueue and async.
23 /* on idle list while idle, on busy hash table while busy */
25 struct list_head entry
; /* L: while idle */
26 struct hlist_node hentry
; /* L: while busy */
29 struct work_struct
*current_work
; /* L: work being processed */
30 work_func_t current_func
; /* L: current_work's fn */
31 struct pool_workqueue
*current_pwq
; /* L: current_work's pwq */
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 */
36 /* 64 bytes boundary on 64bit, 32 on 32bit */
37 unsigned long last_active
; /* L: last active timestamp */
38 unsigned int flags
; /* X: flags */
39 int id
; /* I: worker id */
41 /* used only by rescuers to point to the target workqueue */
42 struct workqueue_struct
*rescue_wq
; /* I: the workqueue to rescue */
46 * current_wq_worker - return struct worker if %current is a workqueue worker
48 static inline struct worker
*current_wq_worker(void)
50 if (current
->flags
& PF_WQ_WORKER
)
51 return kthread_data(current
);
56 * Scheduler hooks for concurrency managed workqueue. Only to be used from
57 * sched.c and workqueue.c.
59 void wq_worker_waking_up(struct task_struct
*task
, int cpu
);
60 struct task_struct
*wq_worker_sleeping(struct task_struct
*task
, int cpu
);
62 #endif /* _KERNEL_WORKQUEUE_INTERNAL_H */