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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - kernel/workqueue_internal.h
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 bool desc_valid
; /* ->desc is valid */
33 struct list_head scheduled
; /* L: scheduled works */
35 /* 64 bytes boundary on 64bit, 32 on 32bit */
37 struct task_struct
*task
; /* I: worker task */
38 struct worker_pool
*pool
; /* I: the associated pool */
40 struct list_head node
; /* A: anchored at pool->workers */
41 /* A: runs through worker->node */
43 unsigned long last_active
; /* L: last active timestamp */
44 unsigned int flags
; /* X: flags */
45 int id
; /* I: worker id */
48 * Opaque string set with work_set_desc(). Printed out with task
49 * dump for debugging - WARN, BUG, panic or sysrq.
51 char desc
[WORKER_DESC_LEN
];
53 /* used only by rescuers to point to the target workqueue */
54 struct workqueue_struct
*rescue_wq
; /* I: the workqueue to rescue */
58 * current_wq_worker - return struct worker if %current is a workqueue worker
60 static inline struct worker
*current_wq_worker(void)
62 if (current
->flags
& PF_WQ_WORKER
)
63 return kthread_data(current
);
68 * Scheduler hooks for concurrency managed workqueue. Only to be used from
69 * sched/core.c and workqueue.c.
71 void wq_worker_waking_up(struct task_struct
*task
, int cpu
);
72 struct task_struct
*wq_worker_sleeping(struct task_struct
*task
);
74 #endif /* _KERNEL_WORKQUEUE_INTERNAL_H */