Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * kernel/workqueue_internal.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Workqueue internal header file.  Only to be included by workqueue and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * core kernel subsystems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #ifndef _KERNEL_WORKQUEUE_INTERNAL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define _KERNEL_WORKQUEUE_INTERNAL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/preempt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) struct worker_pool;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * The poor guys doing the actual heavy lifting.  All on-duty workers are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * either serving the manager role, on idle list or on busy hash.  For
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * details on the locking annotation (L, I, X...), refer to workqueue.c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * Only to be used in workqueue and async.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct worker {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	/* on idle list while idle, on busy hash table while busy */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		struct list_head	entry;	/* L: while idle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		struct hlist_node	hentry;	/* L: while busy */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	struct work_struct	*current_work;	/* L: work being processed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	work_func_t		current_func;	/* L: current_work's fn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	struct pool_workqueue	*current_pwq; /* L: current_work's pwq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	struct list_head	scheduled;	/* L: scheduled works */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	/* 64 bytes boundary on 64bit, 32 on 32bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct task_struct	*task;		/* I: worker task */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	struct worker_pool	*pool;		/* A: the associated pool */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 						/* L: for rescuers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	struct list_head	node;		/* A: anchored at pool->workers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 						/* A: runs through worker->node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	unsigned long		last_active;	/* L: last active timestamp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	unsigned int		flags;		/* X: flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	int			id;		/* I: worker id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	int			sleeping;	/* None */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	 * Opaque string set with work_set_desc().  Printed out with task
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	 * dump for debugging - WARN, BUG, panic or sysrq.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	char			desc[WORKER_DESC_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	/* used only by rescuers to point to the target workqueue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	struct workqueue_struct	*rescue_wq;	/* I: the workqueue to rescue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	/* used by the scheduler to determine a worker's last known identity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	work_func_t		last_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)  * current_wq_worker - return struct worker if %current is a workqueue worker
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static inline struct worker *current_wq_worker(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	if (in_task() && (current->flags & PF_WQ_WORKER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 		return kthread_data(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)  * Scheduler hooks for concurrency managed workqueue.  Only to be used from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)  * sched/ and workqueue.c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) void wq_worker_running(struct task_struct *task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) void wq_worker_sleeping(struct task_struct *task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) work_func_t wq_worker_last_func(struct task_struct *task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #endif /* _KERNEL_WORKQUEUE_INTERNAL_H */