[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / workqueue.h

/*
 * workqueue.h --- work queue handling for Linux.
 */

#ifndef _LINUX_WORKQUEUE_H
#define _LINUX_WORKQUEUE_H

#include <linux/timer.h>
#include <linux/linkage.h>
#include <linux/bitops.h>
#include <linux/lockdep.h>
#include <asm/atomic.h>

struct workqueue_struct;

struct work_struct;
typedef void (*work_func_t)(struct work_struct *work);

/*
 * The first word is the work queue pointer and the flags rolled into
 * one
 */
#define work_data_bits(work) ((unsigned long *)(&(work)->data))

enum {
	WORK_STRUCT_PENDING_BIT	= 0,	/* work item is pending execution */
#ifdef CONFIG_DEBUG_OBJECTS_WORK
	WORK_STRUCT_STATIC_BIT	= 1,	/* static initializer (debugobjects) */
#endif

	WORK_STRUCT_PENDING	= 1 << WORK_STRUCT_PENDING_BIT,
#ifdef CONFIG_DEBUG_OBJECTS_WORK
	WORK_STRUCT_STATIC	= 1 << WORK_STRUCT_STATIC_BIT,
#else
	WORK_STRUCT_STATIC	= 0,
#endif

	WORK_STRUCT_FLAG_MASK	= 3UL,
	WORK_STRUCT_WQ_DATA_MASK = ~WORK_STRUCT_FLAG_MASK,
};

struct work_struct {
	atomic_long_t data;
	struct list_head entry;
	work_func_t func;
#ifdef CONFIG_LOCKDEP
	struct lockdep_map lockdep_map;
#endif
};

#define WORK_DATA_INIT()	ATOMIC_LONG_INIT(0)
#define WORK_DATA_STATIC_INIT()	ATOMIC_LONG_INIT(WORK_STRUCT_STATIC)

struct delayed_work {
	struct work_struct work;
	struct timer_list timer;
};

static inline struct delayed_work *to_delayed_work(struct work_struct *work)
{
	return container_of(work, struct delayed_work, work);
}

struct execute_work {
	struct work_struct work;
};

#ifdef CONFIG_LOCKDEP
/*
 * NB: because we have to copy the lockdep_map, setting _key
 * here is required, otherwise it could get initialised to the
 * copy of the lockdep_map!
 */
#define __WORK_INIT_LOCKDEP_MAP(n, k) \
	.lockdep_map = STATIC_LOCKDEP_MAP_INIT(n, k),
#else
#define __WORK_INIT_LOCKDEP_MAP(n, k)
#endif

#define __WORK_INITIALIZER(n, f) {				\
	.data = WORK_DATA_STATIC_INIT(),			\
	.entry	= { &(n).entry, &(n).entry },			\
	.func = (f),						\
	__WORK_INIT_LOCKDEP_MAP(#n, &(n))			\
	}

#define __DELAYED_WORK_INITIALIZER(n, f) {			\
	.work = __WORK_INITIALIZER((n).work, (f)),		\
	.timer = TIMER_INITIALIZER(NULL, 0, 0),			\
	}

#define DECLARE_WORK(n, f)					\
	struct work_struct n = __WORK_INITIALIZER(n, f)

#define DECLARE_DELAYED_WORK(n, f)				\
	struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f)

/*
 * initialize a work item's function pointer
 */
#define PREPARE_WORK(_work, _func)				\
	do {							\
		(_work)->func = (_func);			\
	} while (0)

#define PREPARE_DELAYED_WORK(_work, _func)			\
	PREPARE_WORK(&(_work)->work, (_func))

#ifdef CONFIG_DEBUG_OBJECTS_WORK
extern void __init_work(struct work_struct *work, int onstack);
extern void destroy_work_on_stack(struct work_struct *work);
static inline unsigned int work_static(struct work_struct *work)
{
	return *work_data_bits(work) & WORK_STRUCT_STATIC;
}
#else
static inline void __init_work(struct work_struct *work, int onstack) { }
static inline void destroy_work_on_stack(struct work_struct *work) { }
static inline unsigned int work_static(struct work_struct *work) { return 0; }
#endif

/*
 * initialize all of a work item in one go
 *
 * NOTE! No point in using "atomic_long_set()": using a direct
 * assignment of the work data initializer allows the compiler
 * to generate better code.
 */
#ifdef CONFIG_LOCKDEP
#define __INIT_WORK(_work, _func, _onstack)				\
	do {								\
		static struct lock_class_key __key;			\
									\
		__init_work((_work), _onstack);				\
		(_work)->data = (atomic_long_t) WORK_DATA_INIT();	\
		lockdep_init_map(&(_work)->lockdep_map, #_work, &__key, 0);\
		INIT_LIST_HEAD(&(_work)->entry);			\
		PREPARE_WORK((_work), (_func));				\
	} while (0)
#else
#define __INIT_WORK(_work, _func, _onstack)				\
	do {								\
		__init_work((_work), _onstack);				\
		(_work)->data = (atomic_long_t) WORK_DATA_INIT();	\
		INIT_LIST_HEAD(&(_work)->entry);			\
		PREPARE_WORK((_work), (_func));				\
	} while (0)
#endif

#define INIT_WORK(_work, _func)					\
	do {							\
		__INIT_WORK((_work), (_func), 0);		\
	} while (0)

#define INIT_WORK_ON_STACK(_work, _func)			\
	do {							\
		__INIT_WORK((_work), (_func), 1);		\
	} while (0)

#define INIT_DELAYED_WORK(_work, _func)				\
	do {							\
		INIT_WORK(&(_work)->work, (_func));		\
		init_timer(&(_work)->timer);			\
	} while (0)

#define INIT_DELAYED_WORK_ON_STACK(_work, _func)		\
	do {							\
		INIT_WORK_ON_STACK(&(_work)->work, (_func));	\
		init_timer_on_stack(&(_work)->timer);		\
	} while (0)

#define INIT_DELAYED_WORK_DEFERRABLE(_work, _func)		\
	do {							\
		INIT_WORK(&(_work)->work, (_func));		\
		init_timer_deferrable(&(_work)->timer);		\
	} while (0)

/**
 * work_pending - Find out whether a work item is currently pending
 * @work: The work item in question
 */
#define work_pending(work) \
	test_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work))

/**
 * delayed_work_pending - Find out whether a delayable work item is currently
 * pending
 * @work: The work item in question
 */
#define delayed_work_pending(w) \
	work_pending(&(w)->work)

/**
 * work_clear_pending - for internal use only, mark a work item as not pending
 * @work: The work item in question
 */
#define work_clear_pending(work) \
	clear_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work))

enum {
	WQ_FREEZEABLE		= 1 << 0, /* freeze during suspend */
	WQ_SINGLE_THREAD	= 1 << 1, /* no per-cpu worker */
};

extern struct workqueue_struct *
__create_workqueue_key(const char *name, unsigned int flags,
		       struct lock_class_key *key, const char *lock_name);

#ifdef CONFIG_LOCKDEP
#define __create_workqueue(name, flags)				\
({								\
	static struct lock_class_key __key;			\
	const char *__lock_name;				\
								\
	if (__builtin_constant_p(name))				\
		__lock_name = (name);				\
	else							\
		__lock_name = #name;				\
								\
	__create_workqueue_key((name), (flags), &__key,		\
			       __lock_name);			\
})
#else
#define __create_workqueue(name, flags)				\
	__create_workqueue_key((name), (flags), NULL, NULL)
#endif

#define create_workqueue(name)					\
	__create_workqueue((name), 0)
#define create_freezeable_workqueue(name)			\
	__create_workqueue((name), WQ_FREEZEABLE | WQ_SINGLE_THREAD)
#define create_singlethread_workqueue(name)			\
	__create_workqueue((name), WQ_SINGLE_THREAD)

extern void destroy_workqueue(struct workqueue_struct *wq);

extern int queue_work(struct workqueue_struct *wq, struct work_struct *work);
extern int queue_work_on(int cpu, struct workqueue_struct *wq,
			struct work_struct *work);
extern int queue_delayed_work(struct workqueue_struct *wq,
			struct delayed_work *work, unsigned long delay);
extern int queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
			struct delayed_work *work, unsigned long delay);

extern void flush_workqueue(struct workqueue_struct *wq);
extern void flush_scheduled_work(void);
extern void flush_delayed_work(struct delayed_work *work);

extern int schedule_work(struct work_struct *work);
extern int schedule_work_on(int cpu, struct work_struct *work);
extern int schedule_delayed_work(struct delayed_work *work, unsigned long delay);
extern int schedule_delayed_work_on(int cpu, struct delayed_work *work,
					unsigned long delay);
extern int schedule_on_each_cpu(work_func_t func);
extern int current_is_keventd(void);
extern int keventd_up(void);

extern void init_workqueues(void);
int execute_in_process_context(work_func_t fn, struct execute_work *);

extern int flush_work(struct work_struct *work);

extern int cancel_work_sync(struct work_struct *work);

/*
 * Kill off a pending schedule_delayed_work().  Note that the work callback
 * function may still be running on return from cancel_delayed_work(), unless
 * it returns 1 and the work doesn't re-arm itself. Run flush_workqueue() or
 * cancel_work_sync() to wait on it.
 */
static inline int cancel_delayed_work(struct delayed_work *work)
{
	int ret;

	ret = del_timer_sync(&work->timer);
	if (ret)
		work_clear_pending(&work->work);
	return ret;
}

/*
 * Like above, but uses del_timer() instead of del_timer_sync(). This means,
 * if it returns 0 the timer function may be running and the queueing is in
 * progress.
 */
static inline int __cancel_delayed_work(struct delayed_work *work)
{
	int ret;

	ret = del_timer(&work->timer);
	if (ret)
		work_clear_pending(&work->work);
	return ret;
}

extern int cancel_delayed_work_sync(struct delayed_work *work);

/* Obsolete. use cancel_delayed_work_sync() */
static inline
void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq,
					struct delayed_work *work)
{
	cancel_delayed_work_sync(work);
}

/* Obsolete. use cancel_delayed_work_sync() */
static inline
void cancel_rearming_delayed_work(struct delayed_work *work)
{
	cancel_delayed_work_sync(work);
}

#ifndef CONFIG_SMP
static inline long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
{
	return fn(arg);
}
#else
long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg);
#endif /* CONFIG_SMP */
#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* workqueue.h --- work queue handling for Linux.
	3	*/
	4
	5	#ifndef _LINUX_WORKQUEUE_H
	6	#define _LINUX_WORKQUEUE_H
	7
	8	#include <linux/timer.h>
	9	#include <linux/linkage.h>
	10	#include <linux/bitops.h>
4e6045f1	11	#include <linux/lockdep.h>
a08727ba	12	#include <asm/atomic.h>
1da177e4 LT	13
	14	struct workqueue_struct;
	15
65f27f38 DH	16	struct work_struct;
65f27f38 DH	17	typedef void (work_func_t)(struct work_struct work);
6bb49e59	18
a08727ba LT	19	/*
	20	* The first word is the work queue pointer and the flags rolled into
	21	* one
	22	*/
	23	#define work_data_bits(work) ((unsigned long *)(&(work)->data))
	24
22df02bb TH	25	enum {
	26	WORK_STRUCT_PENDING_BIT = 0, /* work item is pending execution */
	27	#ifdef CONFIG_DEBUG_OBJECTS_WORK
	28	WORK_STRUCT_STATIC_BIT = 1, /* static initializer (debugobjects) */
	29	#endif
	30
	31	WORK_STRUCT_PENDING = 1 << WORK_STRUCT_PENDING_BIT,
	32	#ifdef CONFIG_DEBUG_OBJECTS_WORK
	33	WORK_STRUCT_STATIC = 1 << WORK_STRUCT_STATIC_BIT,
	34	#else
	35	WORK_STRUCT_STATIC = 0,
	36	#endif
	37
	38	WORK_STRUCT_FLAG_MASK = 3UL,
	39	WORK_STRUCT_WQ_DATA_MASK = ~WORK_STRUCT_FLAG_MASK,
	40	};
	41
1da177e4	42	struct work_struct {
a08727ba	43	atomic_long_t data;
1da177e4	44	struct list_head entry;
6bb49e59	45	work_func_t func;
4e6045f1 JB	46	#ifdef CONFIG_LOCKDEP
	47	struct lockdep_map lockdep_map;
	48	#endif
52bad64d DH	49	};
52bad64d DH	50
23b2e599	51	#define WORK_DATA_INIT() ATOMIC_LONG_INIT(0)
22df02bb	52	#define WORK_DATA_STATIC_INIT() ATOMIC_LONG_INIT(WORK_STRUCT_STATIC)
a08727ba	53
52bad64d DH	54	struct delayed_work {
52bad64d DH	55	struct work_struct work;
1da177e4 LT	56	struct timer_list timer;
	57	};
	58
bf6aede7 JD	59	static inline struct delayed_work to_delayed_work(struct work_struct work)
	60	{
	61	return container_of(work, struct delayed_work, work);
	62	}
	63
1fa44eca JB	64	struct execute_work {
	65	struct work_struct work;
	66	};
	67
4e6045f1 JB	68	#ifdef CONFIG_LOCKDEP
	69	/*
	70	* NB: because we have to copy the lockdep_map, setting _key
	71	* here is required, otherwise it could get initialised to the
	72	* copy of the lockdep_map!
	73	*/
	74	#define __WORK_INIT_LOCKDEP_MAP(n, k) \
	75	.lockdep_map = STATIC_LOCKDEP_MAP_INIT(n, k),
	76	#else
	77	#define __WORK_INIT_LOCKDEP_MAP(n, k)
	78	#endif
	79
65f27f38	80	#define __WORK_INITIALIZER(n, f) { \
dc186ad7	81	.data = WORK_DATA_STATIC_INIT(), \
23b2e599	82	.entry = { &(n).entry, &(n).entry }, \
65f27f38	83	.func = (f), \
4e6045f1	84	__WORK_INIT_LOCKDEP_MAP(#n, &(n)) \
65f27f38 DH	85	}
	86
	87	#define __DELAYED_WORK_INITIALIZER(n, f) { \
	88	.work = __WORK_INITIALIZER((n).work, (f)), \
	89	.timer = TIMER_INITIALIZER(NULL, 0, 0), \
	90	}
	91
65f27f38 DH	92	#define DECLARE_WORK(n, f) \
	93	struct work_struct n = __WORK_INITIALIZER(n, f)
	94
65f27f38 DH	95	#define DECLARE_DELAYED_WORK(n, f) \
	96	struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f)
	97
1da177e4	98	/*
65f27f38	99	* initialize a work item's function pointer
1da177e4	100	*/
65f27f38	101	#define PREPARE_WORK(_work, _func) \
1da177e4	102	do { \
52bad64d	103	(_work)->func = (_func); \
1da177e4 LT	104	} while (0)
1da177e4 LT	105
65f27f38 DH	106	#define PREPARE_DELAYED_WORK(_work, _func) \
65f27f38 DH	107	PREPARE_WORK(&(_work)->work, (_func))
52bad64d	108
dc186ad7 TG	109	#ifdef CONFIG_DEBUG_OBJECTS_WORK
	110	extern void __init_work(struct work_struct *work, int onstack);
	111	extern void destroy_work_on_stack(struct work_struct *work);
4690c4ab TH	112	static inline unsigned int work_static(struct work_struct *work)
4690c4ab TH	113	{
22df02bb	114	return *work_data_bits(work) & WORK_STRUCT_STATIC;
4690c4ab	115	}
dc186ad7 TG	116	#else
	117	static inline void __init_work(struct work_struct *work, int onstack) { }
	118	static inline void destroy_work_on_stack(struct work_struct *work) { }
4690c4ab	119	static inline unsigned int work_static(struct work_struct *work) { return 0; }
dc186ad7 TG	120	#endif
dc186ad7 TG	121
1da177e4	122	/*
52bad64d	123	* initialize all of a work item in one go
a08727ba	124	*
b9049df5	125	* NOTE! No point in using "atomic_long_set()": using a direct
a08727ba LT	126	* assignment of the work data initializer allows the compiler
a08727ba LT	127	* to generate better code.
1da177e4	128	*/
4e6045f1	129	#ifdef CONFIG_LOCKDEP
dc186ad7	130	#define __INIT_WORK(_work, _func, _onstack) \
65f27f38	131	do { \
4e6045f1 JB	132	static struct lock_class_key __key; \
4e6045f1 JB	133	\
dc186ad7	134	__init_work((_work), _onstack); \
23b2e599	135	(_work)->data = (atomic_long_t) WORK_DATA_INIT(); \
4e6045f1	136	lockdep_init_map(&(_work)->lockdep_map, #_work, &__key, 0);\
65f27f38 DH	137	INIT_LIST_HEAD(&(_work)->entry); \
	138	PREPARE_WORK((_work), (_func)); \
	139	} while (0)
4e6045f1	140	#else
dc186ad7	141	#define __INIT_WORK(_work, _func, _onstack) \
4e6045f1	142	do { \
dc186ad7	143	__init_work((_work), _onstack); \
4e6045f1 JB	144	(_work)->data = (atomic_long_t) WORK_DATA_INIT(); \
	145	INIT_LIST_HEAD(&(_work)->entry); \
	146	PREPARE_WORK((_work), (_func)); \
	147	} while (0)
	148	#endif
65f27f38	149
dc186ad7 TG	150	#define INIT_WORK(_work, _func) \
	151	do { \
	152	__INIT_WORK((_work), (_func), 0); \
	153	} while (0)
	154
	155	#define INIT_WORK_ON_STACK(_work, _func) \
	156	do { \
	157	__INIT_WORK((_work), (_func), 1); \
	158	} while (0)
	159
65f27f38 DH	160	#define INIT_DELAYED_WORK(_work, _func) \
	161	do { \
	162	INIT_WORK(&(_work)->work, (_func)); \
	163	init_timer(&(_work)->timer); \
52bad64d DH	164	} while (0)
52bad64d DH	165
6d612b0f PZ	166	#define INIT_DELAYED_WORK_ON_STACK(_work, _func) \
6d612b0f PZ	167	do { \
dc186ad7	168	INIT_WORK_ON_STACK(&(_work)->work, (_func)); \
6d612b0f PZ	169	init_timer_on_stack(&(_work)->timer); \
	170	} while (0)
	171
dc186ad7	172	#define INIT_DELAYED_WORK_DEFERRABLE(_work, _func) \
28287033 VP	173	do { \
	174	INIT_WORK(&(_work)->work, (_func)); \
	175	init_timer_deferrable(&(_work)->timer); \
	176	} while (0)
	177
365970a1 DH	178	/**
	179	* work_pending - Find out whether a work item is currently pending
	180	* @work: The work item in question
	181	*/
	182	#define work_pending(work) \
22df02bb	183	test_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work))
365970a1 DH	184
	185	/**
	186	* delayed_work_pending - Find out whether a delayable work item is currently
	187	* pending
	188	* @work: The work item in question
	189	*/
0221872a LT	190	#define delayed_work_pending(w) \
0221872a LT	191	work_pending(&(w)->work)
365970a1	192
65f27f38	193	/**
23b2e599 ON	194	* work_clear_pending - for internal use only, mark a work item as not pending
23b2e599 ON	195	* @work: The work item in question
65f27f38	196	*/
23b2e599	197	#define work_clear_pending(work) \
22df02bb	198	clear_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work))
65f27f38	199
97e37d7b TH	200	enum {
	201	WQ_FREEZEABLE = 1 << 0, /* freeze during suspend */
	202	WQ_SINGLE_THREAD = 1 << 1, /* no per-cpu worker */
	203	};
52bad64d	204
4e6045f1	205	extern struct workqueue_struct *
97e37d7b	206	__create_workqueue_key(const char *name, unsigned int flags,
c790bce0	207	struct lock_class_key key, const char lock_name);
4e6045f1 JB	208
4e6045f1 JB	209	#ifdef CONFIG_LOCKDEP
97e37d7b	210	#define __create_workqueue(name, flags) \
4e6045f1 JB	211	({ \
4e6045f1 JB	212	static struct lock_class_key __key; \
eb13ba87 JB	213	const char *__lock_name; \
	214	\
	215	if (__builtin_constant_p(name)) \
	216	__lock_name = (name); \
	217	else \
	218	__lock_name = #name; \
4e6045f1	219	\
97e37d7b	220	__create_workqueue_key((name), (flags), &__key, \
eb13ba87	221	__lock_name); \
4e6045f1 JB	222	})
4e6045f1 JB	223	#else
97e37d7b TH	224	#define __create_workqueue(name, flags) \
97e37d7b TH	225	__create_workqueue_key((name), (flags), NULL, NULL)
4e6045f1 JB	226	#endif
4e6045f1 JB	227
97e37d7b TH	228	#define create_workqueue(name) \
	229	__create_workqueue((name), 0)
	230	#define create_freezeable_workqueue(name) \
	231	__create_workqueue((name), WQ_FREEZEABLE \| WQ_SINGLE_THREAD)
	232	#define create_singlethread_workqueue(name) \
	233	__create_workqueue((name), WQ_SINGLE_THREAD)
1da177e4 LT	234
	235	extern void destroy_workqueue(struct workqueue_struct *wq);
	236
b3c97528	237	extern int queue_work(struct workqueue_struct wq, struct work_struct work);
c1a220e7 ZR	238	extern int queue_work_on(int cpu, struct workqueue_struct *wq,
c1a220e7 ZR	239	struct work_struct *work);
b3c97528 HH	240	extern int queue_delayed_work(struct workqueue_struct *wq,
b3c97528 HH	241	struct delayed_work *work, unsigned long delay);
7a6bc1cd	242	extern int queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
28e53bdd ON	243	struct delayed_work *work, unsigned long delay);
28e53bdd ON	244
b3c97528	245	extern void flush_workqueue(struct workqueue_struct *wq);
28e53bdd	246	extern void flush_scheduled_work(void);
43046b60	247	extern void flush_delayed_work(struct delayed_work *work);
1da177e4	248
b3c97528	249	extern int schedule_work(struct work_struct *work);
c1a220e7	250	extern int schedule_work_on(int cpu, struct work_struct *work);
b3c97528	251	extern int schedule_delayed_work(struct delayed_work *work, unsigned long delay);
28e53bdd ON	252	extern int schedule_delayed_work_on(int cpu, struct delayed_work *work,
28e53bdd ON	253	unsigned long delay);
65f27f38	254	extern int schedule_on_each_cpu(work_func_t func);
1da177e4 LT	255	extern int current_is_keventd(void);
	256	extern int keventd_up(void);
	257
	258	extern void init_workqueues(void);
65f27f38	259	int execute_in_process_context(work_func_t fn, struct execute_work *);
1da177e4	260
db700897 ON	261	extern int flush_work(struct work_struct *work);
db700897 ON	262
1f1f642e	263	extern int cancel_work_sync(struct work_struct *work);
28e53bdd	264
1da177e4 LT	265	/*
1da177e4 LT	266	* Kill off a pending schedule_delayed_work(). Note that the work callback
071b6386 ON	267	* function may still be running on return from cancel_delayed_work(), unless
071b6386 ON	268	* it returns 1 and the work doesn't re-arm itself. Run flush_workqueue() or
28e53bdd	269	* cancel_work_sync() to wait on it.
1da177e4	270	*/
52bad64d	271	static inline int cancel_delayed_work(struct delayed_work *work)
1da177e4 LT	272	{
	273	int ret;
	274
223a10a9	275	ret = del_timer_sync(&work->timer);
1da177e4	276	if (ret)
23b2e599	277	work_clear_pending(&work->work);
1da177e4 LT	278	return ret;
	279	}
	280
4e49627b ON	281	/*
	282	* Like above, but uses del_timer() instead of del_timer_sync(). This means,
	283	* if it returns 0 the timer function may be running and the queueing is in
	284	* progress.
	285	*/
	286	static inline int __cancel_delayed_work(struct delayed_work *work)
	287	{
	288	int ret;
	289
	290	ret = del_timer(&work->timer);
	291	if (ret)
	292	work_clear_pending(&work->work);
	293	return ret;
	294	}
	295
1f1f642e	296	extern int cancel_delayed_work_sync(struct delayed_work *work);
1634c48f	297
f5a421a4	298	/* Obsolete. use cancel_delayed_work_sync() */
1634c48f ON	299	static inline
	300	void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq,
	301	struct delayed_work *work)
	302	{
f5a421a4 ON	303	cancel_delayed_work_sync(work);
	304	}
	305
	306	/* Obsolete. use cancel_delayed_work_sync() */
	307	static inline
	308	void cancel_rearming_delayed_work(struct delayed_work *work)
	309	{
	310	cancel_delayed_work_sync(work);
1634c48f ON	311	}
1634c48f ON	312
2d3854a3 RR	313	#ifndef CONFIG_SMP
	314	static inline long work_on_cpu(unsigned int cpu, long (fn)(void ), void *arg)
	315	{
	316	return fn(arg);
	317	}
	318	#else
	319	long work_on_cpu(unsigned int cpu, long (fn)(void ), void *arg);
	320	#endif /* CONFIG_SMP */
1da177e4	321	#endif