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>
17 * The poor guys doing the actual heavy lifting. All on-duty workers are
18 * either serving the manager role, on idle list or on busy hash. For
19 * details on the locking annotation (L, I, X...), refer to workqueue.c.
21 * Only to be used in workqueue and async.
24 /* on idle list while idle, on busy hash table while busy */
26 struct list_head entry; /* L: while idle */
27 struct hlist_node hentry; /* L: while busy */
30 struct work_struct *current_work; /* L: work being processed */
31 work_func_t current_func; /* L: current_work's fn */
32 struct cpu_workqueue_struct *current_cwq; /* L: current_work's cwq */
33 struct list_head scheduled; /* L: scheduled works */
34 struct task_struct *task; /* I: worker task */
35 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 /* for rebinding worker to CPU */
42 struct work_struct rebind_work; /* L: for busy worker */
44 /* used only by rescuers to point to the target workqueue */
45 struct workqueue_struct *rescue_wq; /* I: the workqueue to rescue */
49 * current_wq_worker - return struct worker if %current is a workqueue worker
51 static inline struct worker *current_wq_worker(void)
53 if (current->flags & PF_WQ_WORKER)
54 return kthread_data(current);
59 * Scheduler hooks for concurrency managed workqueue. Only to be used from
60 * sched.c and workqueue.c.
62 void wq_worker_waking_up(struct task_struct *task, unsigned int cpu);
63 struct task_struct *wq_worker_sleeping(struct task_struct *task,
66 #endif /* _KERNEL_WORKQUEUE_INTERNAL_H */