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 */
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 */
40 /* for rebinding worker to CPU */
41 struct work_struct rebind_work; /* L: for busy worker */
43 /* used only by rescuers to point to the target workqueue */
44 struct workqueue_struct *rescue_wq; /* I: the workqueue to rescue */
48 * current_wq_worker - return struct worker if %current is a workqueue worker
50 static inline struct worker *current_wq_worker(void)
52 if (current->flags & PF_WQ_WORKER)
53 return kthread_data(current);
58 * Scheduler hooks for concurrency managed workqueue. Only to be used from
59 * sched.c and workqueue.c.
61 void wq_worker_waking_up(struct task_struct *task, unsigned int cpu);
62 struct task_struct *wq_worker_sleeping(struct task_struct *task,
65 #endif /* _KERNEL_WORKQUEUE_INTERNAL_H */