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This will be used to implement an inline function to query whether %current is a workqueue worker and, if so, allow determining which work item it's executing. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org>
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/*
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* kernel/workqueue_internal.h
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*
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* Workqueue internal header file. Only to be included by workqueue and
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* core kernel subsystems.
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*/
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#ifndef _KERNEL_WORKQUEUE_INTERNAL_H
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#define _KERNEL_WORKQUEUE_INTERNAL_H
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#include <linux/workqueue.h>
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struct global_cwq;
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struct worker_pool;
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/*
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* The poor guys doing the actual heavy lifting. All on-duty workers are
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* either serving the manager role, on idle list or on busy hash. For
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* details on the locking annotation (L, I, X...), refer to workqueue.c.
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*
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* Only to be used in workqueue and async.
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*/
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struct worker {
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/* on idle list while idle, on busy hash table while busy */
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union {
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struct list_head entry; /* L: while idle */
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struct hlist_node hentry; /* L: while busy */
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};
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struct work_struct *current_work; /* L: work being processed */
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work_func_t current_func; /* L: current_work's fn */
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struct cpu_workqueue_struct *current_cwq; /* L: current_work's cwq */
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struct list_head scheduled; /* L: scheduled works */
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struct task_struct *task; /* I: worker task */
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struct worker_pool *pool; /* I: the associated pool */
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/* 64 bytes boundary on 64bit, 32 on 32bit */
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unsigned long last_active; /* L: last active timestamp */
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unsigned int flags; /* X: flags */
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int id; /* I: worker id */
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/* for rebinding worker to CPU */
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struct work_struct rebind_work; /* L: for busy worker */
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/* used only by rescuers to point to the target workqueue */
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struct workqueue_struct *rescue_wq; /* I: the workqueue to rescue */
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};
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/*
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* Scheduler hooks for concurrency managed workqueue. Only to be used from
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* sched.c and workqueue.c.
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*/
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void wq_worker_waking_up(struct task_struct *task, unsigned int cpu);
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struct task_struct *wq_worker_sleeping(struct task_struct *task,
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unsigned int cpu);
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#endif /* _KERNEL_WORKQUEUE_INTERNAL_H */
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