[mirror_ubuntu-bionic-kernel.git] / include / linux / sunrpc / sched.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * linux/include/linux/sunrpc/sched.h
 *
 * Scheduling primitives for kernel Sun RPC.
 *
 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
 */

#ifndef _LINUX_SUNRPC_SCHED_H_
#define _LINUX_SUNRPC_SCHED_H_

#include <linux/timer.h>
#include <linux/ktime.h>
#include <linux/sunrpc/types.h>
#include <linux/spinlock.h>
#include <linux/wait_bit.h>
#include <linux/workqueue.h>
#include <linux/sunrpc/xdr.h>

/*
 * This is the actual RPC procedure call info.
 */
struct rpc_procinfo;
struct rpc_message {
	const struct rpc_procinfo *rpc_proc;	/* Procedure information */
	void *			rpc_argp;	/* Arguments */
	void *			rpc_resp;	/* Result */
	struct rpc_cred *	rpc_cred;	/* Credentials */
};

struct rpc_call_ops;
struct rpc_wait_queue;
struct rpc_wait {
	struct list_head	list;		/* wait queue links */
	struct list_head	links;		/* Links to related tasks */
	struct list_head	timer_list;	/* Timer list */
	unsigned long		expires;
};

/*
 * This is the RPC task struct
 */
struct rpc_task {
	atomic_t		tk_count;	/* Reference count */
	int			tk_status;	/* result of last operation */
	struct list_head	tk_task;	/* global list of tasks */

	/*
	 * callback	to be executed after waking up
	 * action	next procedure for async tasks
	 */
	void			(*tk_callback)(struct rpc_task *);
	void			(*tk_action)(struct rpc_task *);

	unsigned long		tk_timeout;	/* timeout for rpc_sleep() */
	unsigned long		tk_runstate;	/* Task run status */

	struct rpc_wait_queue 	*tk_waitqueue;	/* RPC wait queue we're on */
	union {
		struct work_struct	tk_work;	/* Async task work queue */
		struct rpc_wait		tk_wait;	/* RPC wait */
	} u;

	/*
	 * RPC call state
	 */
	struct rpc_message	tk_msg;		/* RPC call info */
	void *			tk_calldata;	/* Caller private data */
	const struct rpc_call_ops *tk_ops;	/* Caller callbacks */

	struct rpc_clnt *	tk_client;	/* RPC client */
	struct rpc_xprt *	tk_xprt;	/* Transport */

	struct rpc_rqst *	tk_rqstp;	/* RPC request */

	struct workqueue_struct	*tk_workqueue;	/* Normally rpciod, but could
						 * be any workqueue
						 */
	ktime_t			tk_start;	/* RPC task init timestamp */

	pid_t			tk_owner;	/* Process id for batching tasks */
	unsigned short		tk_flags;	/* misc flags */
	unsigned short		tk_timeouts;	/* maj timeouts */

#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) || IS_ENABLED(CONFIG_TRACEPOINTS)
	unsigned short		tk_pid;		/* debugging aid */
#endif
	unsigned char		tk_priority : 2,/* Task priority */
				tk_garb_retry : 2,
				tk_cred_retry : 2,
				tk_rebind_retry : 2;
};

typedef void			(*rpc_action)(struct rpc_task *);

struct rpc_call_ops {
	void (*rpc_call_prepare)(struct rpc_task *, void *);
	void (*rpc_call_done)(struct rpc_task *, void *);
	void (*rpc_count_stats)(struct rpc_task *, void *);
	void (*rpc_release)(void *);
};

struct rpc_task_setup {
	struct rpc_task *task;
	struct rpc_clnt *rpc_client;
	struct rpc_xprt *rpc_xprt;
	const struct rpc_message *rpc_message;
	const struct rpc_call_ops *callback_ops;
	void *callback_data;
	struct workqueue_struct *workqueue;
	unsigned short flags;
	signed char priority;
};

/*
 * RPC task flags
 */
#define RPC_TASK_ASYNC		0x0001		/* is an async task */
#define RPC_TASK_SWAPPER	0x0002		/* is swapping in/out */
#define RPC_CALL_MAJORSEEN	0x0020		/* major timeout seen */
#define RPC_TASK_ROOTCREDS	0x0040		/* force root creds */
#define RPC_TASK_DYNAMIC	0x0080		/* task was kmalloc'ed */
#define RPC_TASK_KILLED		0x0100		/* task was killed */
#define RPC_TASK_SOFT		0x0200		/* Use soft timeouts */
#define RPC_TASK_SOFTCONN	0x0400		/* Fail if can't connect */
#define RPC_TASK_SENT		0x0800		/* message was sent */
#define RPC_TASK_TIMEOUT	0x1000		/* fail with ETIMEDOUT on timeout */
#define RPC_TASK_NOCONNECT	0x2000		/* return ENOTCONN if not connected */
#define RPC_TASK_NO_RETRANS_TIMEOUT	0x4000		/* wait forever for a reply */

#define RPC_IS_ASYNC(t)		((t)->tk_flags & RPC_TASK_ASYNC)
#define RPC_IS_SWAPPER(t)	((t)->tk_flags & RPC_TASK_SWAPPER)
#define RPC_DO_ROOTOVERRIDE(t)	((t)->tk_flags & RPC_TASK_ROOTCREDS)
#define RPC_ASSASSINATED(t)	((t)->tk_flags & RPC_TASK_KILLED)
#define RPC_IS_SOFT(t)		((t)->tk_flags & (RPC_TASK_SOFT|RPC_TASK_TIMEOUT))
#define RPC_IS_SOFTCONN(t)	((t)->tk_flags & RPC_TASK_SOFTCONN)
#define RPC_WAS_SENT(t)		((t)->tk_flags & RPC_TASK_SENT)

#define RPC_TASK_RUNNING	0
#define RPC_TASK_QUEUED		1
#define RPC_TASK_ACTIVE		2
#define RPC_TASK_MSG_RECV	3
#define RPC_TASK_MSG_RECV_WAIT	4

#define RPC_IS_RUNNING(t)	test_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
#define rpc_set_running(t)	set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
#define rpc_test_and_set_running(t) \
				test_and_set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
#define rpc_clear_running(t)	\
	do { \
		smp_mb__before_atomic(); \
		clear_bit(RPC_TASK_RUNNING, &(t)->tk_runstate); \
		smp_mb__after_atomic(); \
	} while (0)

#define RPC_IS_QUEUED(t)	test_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
#define rpc_set_queued(t)	set_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
#define rpc_clear_queued(t)	\
	do { \
		smp_mb__before_atomic(); \
		clear_bit(RPC_TASK_QUEUED, &(t)->tk_runstate); \
		smp_mb__after_atomic(); \
	} while (0)

#define RPC_IS_ACTIVATED(t)	test_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate)

/*
 * Task priorities.
 * Note: if you change these, you must also change
 * the task initialization definitions below.
 */
#define RPC_PRIORITY_LOW	(-1)
#define RPC_PRIORITY_NORMAL	(0)
#define RPC_PRIORITY_HIGH	(1)
#define RPC_PRIORITY_PRIVILEGED	(2)
#define RPC_NR_PRIORITY		(1 + RPC_PRIORITY_PRIVILEGED - RPC_PRIORITY_LOW)

struct rpc_timer {
	struct timer_list timer;
	struct list_head list;
	unsigned long expires;
};

/*
 * RPC synchronization objects
 */
struct rpc_wait_queue {
	spinlock_t		lock;
	struct list_head	tasks[RPC_NR_PRIORITY];	/* task queue for each priority level */
	pid_t			owner;			/* process id of last task serviced */
	unsigned char		maxpriority;		/* maximum priority (0 if queue is not a priority queue) */
	unsigned char		priority;		/* current priority */
	unsigned char		nr;			/* # tasks remaining for cookie */
	unsigned short		qlen;			/* total # tasks waiting in queue */
	struct rpc_timer	timer_list;
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) || IS_ENABLED(CONFIG_TRACEPOINTS)
	const char *		name;
#endif
};

/*
 * This is the # requests to send consecutively
 * from a single cookie.  The aim is to improve
 * performance of NFS operations such as read/write.
 */
#define RPC_BATCH_COUNT			16
#define RPC_IS_PRIORITY(q)		((q)->maxpriority > 0)

/*
 * Function prototypes
 */
struct rpc_task *rpc_new_task(const struct rpc_task_setup *);
struct rpc_task *rpc_run_task(const struct rpc_task_setup *);
struct rpc_task *rpc_run_bc_task(struct rpc_rqst *req);
void		rpc_put_task(struct rpc_task *);
void		rpc_put_task_async(struct rpc_task *);
void		rpc_exit_task(struct rpc_task *);
void		rpc_exit(struct rpc_task *, int);
void		rpc_release_calldata(const struct rpc_call_ops *, void *);
void		rpc_killall_tasks(struct rpc_clnt *);
void		rpc_execute(struct rpc_task *);
void		rpc_init_priority_wait_queue(struct rpc_wait_queue *, const char *);
void		rpc_init_wait_queue(struct rpc_wait_queue *, const char *);
void		rpc_destroy_wait_queue(struct rpc_wait_queue *);
void		rpc_sleep_on(struct rpc_wait_queue *, struct rpc_task *,
					rpc_action action);
void		rpc_sleep_on_priority(struct rpc_wait_queue *,
					struct rpc_task *,
					rpc_action action,
					int priority);
void		rpc_wake_up_queued_task(struct rpc_wait_queue *,
					struct rpc_task *);
void		rpc_wake_up(struct rpc_wait_queue *);
struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
struct rpc_task *rpc_wake_up_first_on_wq(struct workqueue_struct *wq,
					struct rpc_wait_queue *,
					bool (*)(struct rpc_task *, void *),
					void *);
struct rpc_task *rpc_wake_up_first(struct rpc_wait_queue *,
					bool (*)(struct rpc_task *, void *),
					void *);
void		rpc_wake_up_status(struct rpc_wait_queue *, int);
void		rpc_delay(struct rpc_task *, unsigned long);
int		rpc_malloc(struct rpc_task *);
void		rpc_free(struct rpc_task *);
int		rpciod_up(void);
void		rpciod_down(void);
int		__rpc_wait_for_completion_task(struct rpc_task *task, wait_bit_action_f *);
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
struct net;
void		rpc_show_tasks(struct net *);
#endif
int		rpc_init_mempool(void);
void		rpc_destroy_mempool(void);
extern struct workqueue_struct *rpciod_workqueue;
extern struct workqueue_struct *xprtiod_workqueue;
void		rpc_prepare_task(struct rpc_task *task);

static inline int rpc_wait_for_completion_task(struct rpc_task *task)
{
	return __rpc_wait_for_completion_task(task, NULL);
}

#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) || IS_ENABLED(CONFIG_TRACEPOINTS)
static inline const char * rpc_qname(const struct rpc_wait_queue *q)
{
	return ((q && q->name) ? q->name : "unknown");
}

static inline void rpc_assign_waitqueue_name(struct rpc_wait_queue *q,
		const char *name)
{
	q->name = name;
}
#else
static inline void rpc_assign_waitqueue_name(struct rpc_wait_queue *q,
		const char *name)
{
}
#endif

#if IS_ENABLED(CONFIG_SUNRPC_SWAP)
int rpc_clnt_swap_activate(struct rpc_clnt *clnt);
void rpc_clnt_swap_deactivate(struct rpc_clnt *clnt);
#else
static inline int
rpc_clnt_swap_activate(struct rpc_clnt *clnt)
{
	return -EINVAL;
}

static inline void
rpc_clnt_swap_deactivate(struct rpc_clnt *clnt)
{
}
#endif /* CONFIG_SUNRPC_SWAP */

#endif /* _LINUX_SUNRPC_SCHED_H_ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* linux/include/linux/sunrpc/sched.h
	4	*
	5	* Scheduling primitives for kernel Sun RPC.
	6	*
	7	* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
	8	*/
	9
	10	#ifndef _LINUX_SUNRPC_SCHED_H_
	11	#define _LINUX_SUNRPC_SCHED_H_
	12
	13	#include <linux/timer.h>
ff839970	14	#include <linux/ktime.h>
1da177e4 LT	15	#include <linux/sunrpc/types.h>
1da177e4 LT	16	#include <linux/spinlock.h>
5dd43ce2	17	#include <linux/wait_bit.h>
1da177e4 LT	18	#include <linux/workqueue.h>
	19	#include <linux/sunrpc/xdr.h>
	20
	21	/*
	22	* This is the actual RPC procedure call info.
	23	*/
	24	struct rpc_procinfo;
	25	struct rpc_message {
499b4988	26	const struct rpc_procinfo rpc_proc; / Procedure information */
1da177e4 LT	27	void * rpc_argp; /* Arguments */
	28	void * rpc_resp; /* Result */
	29	struct rpc_cred * rpc_cred; /* Credentials */
	30	};
	31
963d8fe5	32	struct rpc_call_ops;
1da177e4 LT	33	struct rpc_wait_queue;
	34	struct rpc_wait {
	35	struct list_head list; /* wait queue links */
	36	struct list_head links; /* Links to related tasks */
36df9aae TM	37	struct list_head timer_list; /* Timer list */
36df9aae TM	38	unsigned long expires;
1da177e4 LT	39	};
	40
	41	/*
	42	* This is the RPC task struct
	43	*/
	44	struct rpc_task {
44c28873	45	atomic_t tk_count; /* Reference count */
5edd1051	46	int tk_status; /* result of last operation */
1da177e4	47	struct list_head tk_task; /* global list of tasks */
1da177e4	48
1da177e4	49	/*
1da177e4 LT	50	* callback to be executed after waking up
1da177e4 LT	51	* action next procedure for async tasks
1da177e4	52	*/
1da177e4 LT	53	void (tk_callback)(struct rpc_task );
1da177e4 LT	54	void (tk_action)(struct rpc_task );
1da177e4	55
1da177e4	56	unsigned long tk_timeout; /* timeout for rpc_sleep() */
1da177e4	57	unsigned long tk_runstate; /* Task run status */
5edd1051	58
96ef13b2	59	struct rpc_wait_queue tk_waitqueue; / RPC wait queue we're on */
1da177e4 LT	60	union {
	61	struct work_struct tk_work; /* Async task work queue */
	62	struct rpc_wait tk_wait; /* RPC wait */
	63	} u;
ef759a2e	64
5edd1051 TM	65	/*
	66	* RPC call state
	67	*/
	68	struct rpc_message tk_msg; /* RPC call info */
	69	void * tk_calldata; /* Caller private data */
	70	const struct rpc_call_ops tk_ops; / Caller callbacks */
	71
	72	struct rpc_clnt * tk_client; /* RPC client */
fb43d172 TM	73	struct rpc_xprt * tk_xprt; /* Transport */
fb43d172 TM	74
5edd1051 TM	75	struct rpc_rqst * tk_rqstp; /* RPC request */
	76
	77	struct workqueue_struct tk_workqueue; / Normally rpciod, but could
	78	* be any workqueue
	79	*/
d60dbb20	80	ktime_t tk_start; /* RPC task init timestamp */
ef759a2e	81
3ff7576d	82	pid_t tk_owner; /* Process id for batching tasks */
9bb0b813 TM	83	unsigned short tk_flags; /* misc flags */
9bb0b813 TM	84	unsigned short tk_timeouts; /* maj timeouts */
3ff7576d	85
1306729b	86	#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) \|\| IS_ENABLED(CONFIG_TRACEPOINTS)
1da177e4 LT	87	unsigned short tk_pid; /* debugging aid */
1da177e4 LT	88	#endif
9bb0b813 TM	89	unsigned char tk_priority : 2,/* Task priority */
9bb0b813 TM	90	tk_garb_retry : 2,
0b760113 TM	91	tk_cred_retry : 2,
0b760113 TM	92	tk_rebind_retry : 2;
1da177e4	93	};
1da177e4	94
1da177e4 LT	95	typedef void (rpc_action)(struct rpc_task );
1da177e4 LT	96
963d8fe5	97	struct rpc_call_ops {
4ce70ada	98	void (rpc_call_prepare)(struct rpc_task , void *);
963d8fe5	99	void (rpc_call_done)(struct rpc_task , void *);
0a702195	100	void (rpc_count_stats)(struct rpc_task , void *);
963d8fe5 TM	101	void (rpc_release)(void );
	102	};
	103
84115e1c	104	struct rpc_task_setup {
e8f5d77c	105	struct rpc_task *task;
84115e1c	106	struct rpc_clnt *rpc_client;
9d61498d	107	struct rpc_xprt *rpc_xprt;
84115e1c TM	108	const struct rpc_message *rpc_message;
	109	const struct rpc_call_ops *callback_ops;
	110	void *callback_data;
32bfb5c0	111	struct workqueue_struct *workqueue;
84115e1c	112	unsigned short flags;
3ff7576d	113	signed char priority;
84115e1c	114	};
963d8fe5	115
1da177e4 LT	116	/*
	117	* RPC task flags
	118	*/
	119	#define RPC_TASK_ASYNC 0x0001 /* is an async task */
	120	#define RPC_TASK_SWAPPER 0x0002 /* is swapping in/out */
1da177e4 LT	121	#define RPC_CALL_MAJORSEEN 0x0020 /* major timeout seen */
	122	#define RPC_TASK_ROOTCREDS 0x0040 /* force root creds */
	123	#define RPC_TASK_DYNAMIC 0x0080 /* task was kmalloc'ed */
	124	#define RPC_TASK_KILLED 0x0100 /* task was killed */
	125	#define RPC_TASK_SOFT 0x0200 /* Use soft timeouts */
09a21c41	126	#define RPC_TASK_SOFTCONN 0x0400 /* Fail if can't connect */
468f8613	127	#define RPC_TASK_SENT 0x0800 /* message was sent */
7494d00c	128	#define RPC_TASK_TIMEOUT 0x1000 /* fail with ETIMEDOUT on timeout */
786615bc	129	#define RPC_TASK_NOCONNECT 0x2000 /* return ENOTCONN if not connected */
8a19a0b6	130	#define RPC_TASK_NO_RETRANS_TIMEOUT 0x4000 /* wait forever for a reply */
1da177e4 LT	131
1da177e4 LT	132	#define RPC_IS_ASYNC(t) ((t)->tk_flags & RPC_TASK_ASYNC)
1da177e4 LT	133	#define RPC_IS_SWAPPER(t) ((t)->tk_flags & RPC_TASK_SWAPPER)
	134	#define RPC_DO_ROOTOVERRIDE(t) ((t)->tk_flags & RPC_TASK_ROOTCREDS)
	135	#define RPC_ASSASSINATED(t) ((t)->tk_flags & RPC_TASK_KILLED)
7494d00c	136	#define RPC_IS_SOFT(t) ((t)->tk_flags & (RPC_TASK_SOFT\|RPC_TASK_TIMEOUT))
09a21c41	137	#define RPC_IS_SOFTCONN(t) ((t)->tk_flags & RPC_TASK_SOFTCONN)
468f8613	138	#define RPC_WAS_SENT(t) ((t)->tk_flags & RPC_TASK_SENT)
1da177e4 LT	139
	140	#define RPC_TASK_RUNNING 0
	141	#define RPC_TASK_QUEUED 1
f5fb7b06	142	#define RPC_TASK_ACTIVE 2
729749bb TM	143	#define RPC_TASK_MSG_RECV 3
729749bb TM	144	#define RPC_TASK_MSG_RECV_WAIT 4
1da177e4	145
7b8f850b RB	146	#define RPC_IS_RUNNING(t) test_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
7b8f850b RB	147	#define rpc_set_running(t) set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
1da177e4	148	#define rpc_test_and_set_running(t) \
7b8f850b	149	test_and_set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
1da177e4 LT	150	#define rpc_clear_running(t) \
1da177e4 LT	151	do { \
4e857c58	152	smp_mb__before_atomic(); \
1da177e4	153	clear_bit(RPC_TASK_RUNNING, &(t)->tk_runstate); \
4e857c58	154	smp_mb__after_atomic(); \
1da177e4 LT	155	} while (0)
1da177e4 LT	156
7b8f850b RB	157	#define RPC_IS_QUEUED(t) test_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
7b8f850b RB	158	#define rpc_set_queued(t) set_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
1da177e4 LT	159	#define rpc_clear_queued(t) \
1da177e4 LT	160	do { \
4e857c58	161	smp_mb__before_atomic(); \
1da177e4	162	clear_bit(RPC_TASK_QUEUED, &(t)->tk_runstate); \
4e857c58	163	smp_mb__after_atomic(); \
1da177e4	164	} while (0)
1da177e4	165
7b8f850b	166	#define RPC_IS_ACTIVATED(t) test_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate)
44c28873	167
1da177e4 LT	168	/*
	169	* Task priorities.
	170	* Note: if you change these, you must also change
	171	* the task initialization definitions below.
	172	*/
3ff7576d TM	173	#define RPC_PRIORITY_LOW (-1)
	174	#define RPC_PRIORITY_NORMAL (0)
	175	#define RPC_PRIORITY_HIGH (1)
cf3b01b5 AB	176	#define RPC_PRIORITY_PRIVILEGED (2)
cf3b01b5 AB	177	#define RPC_NR_PRIORITY (1 + RPC_PRIORITY_PRIVILEGED - RPC_PRIORITY_LOW)
1da177e4	178
36df9aae TM	179	struct rpc_timer {
	180	struct timer_list timer;
	181	struct list_head list;
	182	unsigned long expires;
	183	};
	184
1da177e4 LT	185	/*
	186	* RPC synchronization objects
	187	*/
	188	struct rpc_wait_queue {
	189	spinlock_t lock;
	190	struct list_head tasks[RPC_NR_PRIORITY]; /* task queue for each priority level */
3ff7576d	191	pid_t owner; /* process id of last task serviced */
1da177e4 LT	192	unsigned char maxpriority; /* maximum priority (0 if queue is not a priority queue) */
1da177e4 LT	193	unsigned char priority; /* current priority */
1da177e4	194	unsigned char nr; /* # tasks remaining for cookie */
e19b63da	195	unsigned short qlen; /* total # tasks waiting in queue */
36df9aae	196	struct rpc_timer timer_list;
1306729b	197	#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) \|\| IS_ENABLED(CONFIG_TRACEPOINTS)
1da177e4 LT	198	const char * name;
	199	#endif
	200	};
	201
	202	/*
	203	* This is the # requests to send consecutively
	204	* from a single cookie. The aim is to improve
	205	* performance of NFS operations such as read/write.
	206	*/
	207	#define RPC_BATCH_COUNT 16
1da177e4 LT	208	#define RPC_IS_PRIORITY(q) ((q)->maxpriority > 0)
	209
	210	/*
	211	* Function prototypes
	212	*/
84115e1c	213	struct rpc_task rpc_new_task(const struct rpc_task_setup );
c970aa85	214	struct rpc_task rpc_run_task(const struct rpc_task_setup );
0f419791	215	struct rpc_task rpc_run_bc_task(struct rpc_rqst req);
e6b3c4db	216	void rpc_put_task(struct rpc_task *);
bf294b41	217	void rpc_put_task_async(struct rpc_task *);
abbcf28f	218	void rpc_exit_task(struct rpc_task *);
d9b6cd94	219	void rpc_exit(struct rpc_task *, int);
bbd5a1f9	220	void rpc_release_calldata(const struct rpc_call_ops , void );
1da177e4	221	void rpc_killall_tasks(struct rpc_clnt *);
2efef837	222	void rpc_execute(struct rpc_task *);
1da177e4 LT	223	void rpc_init_priority_wait_queue(struct rpc_wait_queue , const char );
1da177e4 LT	224	void rpc_init_wait_queue(struct rpc_wait_queue , const char );
f6a1cc89	225	void rpc_destroy_wait_queue(struct rpc_wait_queue *);
1da177e4	226	void rpc_sleep_on(struct rpc_wait_queue , struct rpc_task ,
5d00837b	227	rpc_action action);
3b27bad7 TM	228	void rpc_sleep_on_priority(struct rpc_wait_queue *,
	229	struct rpc_task *,
	230	rpc_action action,
	231	int priority);
96ef13b2 TM	232	void rpc_wake_up_queued_task(struct rpc_wait_queue *,
96ef13b2 TM	233	struct rpc_task *);
1da177e4 LT	234	void rpc_wake_up(struct rpc_wait_queue *);
1da177e4 LT	235	struct rpc_task rpc_wake_up_next(struct rpc_wait_queue );
f1dc237c TM	236	struct rpc_task rpc_wake_up_first_on_wq(struct workqueue_struct wq,
	237	struct rpc_wait_queue *,
	238	bool ()(struct rpc_task , void *),
	239	void *);
961a828d TM	240	struct rpc_task rpc_wake_up_first(struct rpc_wait_queue ,
	241	bool ()(struct rpc_task , void *),
	242	void *);
1da177e4 LT	243	void rpc_wake_up_status(struct rpc_wait_queue *, int);
1da177e4 LT	244	void rpc_delay(struct rpc_task *, unsigned long);
5fe6eaa1	245	int rpc_malloc(struct rpc_task *);
3435c74a	246	void rpc_free(struct rpc_task *);
1da177e4 LT	247	int rpciod_up(void);
1da177e4 LT	248	void rpciod_down(void);
c1221321	249	int __rpc_wait_for_completion_task(struct rpc_task task, wait_bit_action_f );
f895b252	250	#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
70abc49b SK	251	struct net;
70abc49b SK	252	void rpc_show_tasks(struct net *);
1da177e4 LT	253	#endif
	254	int rpc_init_mempool(void);
	255	void rpc_destroy_mempool(void);
24c5d9d7	256	extern struct workqueue_struct *rpciod_workqueue;
40a5f1b1	257	extern struct workqueue_struct *xprtiod_workqueue;
aae2006e	258	void rpc_prepare_task(struct rpc_task *task);
1da177e4	259
44c28873 TM	260	static inline int rpc_wait_for_completion_task(struct rpc_task *task)
	261	{
	262	return __rpc_wait_for_completion_task(task, NULL);
	263	}
	264
1306729b	265	#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) \|\| IS_ENABLED(CONFIG_TRACEPOINTS)
82b0a4c3	266	static inline const char * rpc_qname(const struct rpc_wait_queue *q)
1da177e4 LT	267	{
	268	return ((q && q->name) ? q->name : "unknown");
	269	}
2f09c242 TM	270
	271	static inline void rpc_assign_waitqueue_name(struct rpc_wait_queue *q,
	272	const char *name)
	273	{
	274	q->name = name;
	275	}
	276	#else
	277	static inline void rpc_assign_waitqueue_name(struct rpc_wait_queue *q,
	278	const char *name)
	279	{
	280	}
1da177e4 LT	281	#endif
1da177e4 LT	282
3c87ef6e JL	283	#if IS_ENABLED(CONFIG_SUNRPC_SWAP)
	284	int rpc_clnt_swap_activate(struct rpc_clnt *clnt);
	285	void rpc_clnt_swap_deactivate(struct rpc_clnt *clnt);
	286	#else
	287	static inline int
	288	rpc_clnt_swap_activate(struct rpc_clnt *clnt)
	289	{
	290	return -EINVAL;
	291	}
	292
	293	static inline void
	294	rpc_clnt_swap_deactivate(struct rpc_clnt *clnt)
	295	{
	296	}
	297	#endif /* CONFIG_SUNRPC_SWAP */
	298
1da177e4	299	#endif /* _LINUX_SUNRPC_SCHED_H_ */