seqlock: Fold seqcount_LOCKNAME_t definition

	__SEQ_LOCK((s)->lock = (assoc_lock));				\

} while (0)

/**

 * typedef seqcount_spinlock_t - sequence counter with spinlock associated

 * @seqcount:	The real sequence counter

 * @lock:	Pointer to the associated spinlock

 *

 * A plain sequence counter with external writer synchronization by a

 * spinlock. The spinlock is associated to the sequence count in the

 * static initializer or init function. This enables lockdep to validate

 * that the write side critical section is properly serialized.

 */

typedef struct seqcount_spinlock {

	seqcount_t	seqcount;

	__SEQ_LOCK(spinlock_t	*lock);

} seqcount_spinlock_t;

/**

 * SEQCNT_SPINLOCK_ZERO - static initializer for seqcount_spinlock_t

 * @name:	Name of the seqcount_spinlock_t instance

#define seqcount_spinlock_init(s, lock)					\

	seqcount_locktype_init(s, lock)

/**

 * typedef seqcount_raw_spinlock_t - sequence count with raw spinlock associated

 * @seqcount:	The real sequence counter

 * @lock:	Pointer to the associated raw spinlock

 *

 * A plain sequence counter with external writer synchronization by a

 * raw spinlock. The raw spinlock is associated to the sequence count in

 * the static initializer or init function. This enables lockdep to

 * validate that the write side critical section is properly serialized.

 */

typedef struct seqcount_raw_spinlock {

	seqcount_t      seqcount;

	__SEQ_LOCK(raw_spinlock_t	*lock);

} seqcount_raw_spinlock_t;

/**

 * SEQCNT_RAW_SPINLOCK_ZERO - static initializer for seqcount_raw_spinlock_t

 * @name:	Name of the seqcount_raw_spinlock_t instance

#define seqcount_raw_spinlock_init(s, lock)				\

	seqcount_locktype_init(s, lock)

/**

 * typedef seqcount_rwlock_t - sequence count with rwlock associated

 * @seqcount:	The real sequence counter

 * @lock:	Pointer to the associated rwlock

 *

 * A plain sequence counter with external writer synchronization by a

 * rwlock. The rwlock is associated to the sequence count in the static

 * initializer or init function. This enables lockdep to validate that

 * the write side critical section is properly serialized.

 */

typedef struct seqcount_rwlock {

	seqcount_t      seqcount;

	__SEQ_LOCK(rwlock_t		*lock);

} seqcount_rwlock_t;

/**

 * SEQCNT_RWLOCK_ZERO - static initializer for seqcount_rwlock_t

 * @name:	Name of the seqcount_rwlock_t instance

#define seqcount_rwlock_init(s, lock)					\

	seqcount_locktype_init(s, lock)

/**

 * typedef seqcount_mutex_t - sequence count with mutex associated

 * @seqcount:	The real sequence counter

 * @lock:	Pointer to the associated mutex

 *

 * A plain sequence counter with external writer synchronization by a

 * mutex. The mutex is associated to the sequence counter in the static

 * initializer or init function. This enables lockdep to validate that

 * the write side critical section is properly serialized.

 *

 * The write side API functions write_seqcount_begin()/end() automatically

 * disable and enable preemption when used with seqcount_mutex_t.

 */

typedef struct seqcount_mutex {

	seqcount_t      seqcount;

	__SEQ_LOCK(struct mutex	*lock);

} seqcount_mutex_t;

/**

 * SEQCNT_MUTEX_ZERO - static initializer for seqcount_mutex_t

 * @name:	Name of the seqcount_mutex_t instance

#define seqcount_mutex_init(s, lock)					\

	seqcount_locktype_init(s, lock)

/**

 * typedef seqcount_ww_mutex_t - sequence count with ww_mutex associated

 * @seqcount:	The real sequence counter

 * @lock:	Pointer to the associated ww_mutex

 *

 * A plain sequence counter with external writer synchronization by a

 * ww_mutex. The ww_mutex is associated to the sequence counter in the static

 * initializer or init function. This enables lockdep to validate that

 * the write side critical section is properly serialized.

 *

 * The write side API functions write_seqcount_begin()/end() automatically

 * disable and enable preemption when used with seqcount_ww_mutex_t.

 */

typedef struct seqcount_ww_mutex {

	seqcount_t      seqcount;

	__SEQ_LOCK(struct ww_mutex	*lock);

} seqcount_ww_mutex_t;

/**

 * SEQCNT_WW_MUTEX_ZERO - static initializer for seqcount_ww_mutex_t

 * @name:	Name of the seqcount_ww_mutex_t instance

#define seqcount_ww_mutex_init(s, lock)					\

	seqcount_locktype_init(s, lock)

/*

 * @preempt: Is the associated write serialization lock preemtpible?

/**

 * typedef seqcount_LOCKNAME_t - sequence counter with spinlock associated

 * @seqcount:	The real sequence counter

 * @lock:	Pointer to the associated spinlock

 *

 * A plain sequence counter with external writer synchronization by a

 * spinlock. The spinlock is associated to the sequence count in the

 * static initializer or init function. This enables lockdep to validate

 * that the write side critical section is properly serialized.

 */

#define SEQCOUNT_LOCKTYPE(locktype, preempt, lockmember)		\

static inline seqcount_t *						\

__seqcount_##locktype##_ptr(seqcount_##locktype##_t *s)			\

/*

 * SEQCOUNT_LOCKTYPE() - Instantiate seqcount_LOCKNAME_t and helpers

 * @locktype:		actual typename

 * @lockname:		name

 * @preemptible:	preemptibility of above locktype

 * @lockmember:		argument for lockdep_assert_held()

 */

#define SEQCOUNT_LOCKTYPE(locktype, lockname, preemptible, lockmember)	\

typedef struct seqcount_##lockname {					\

	seqcount_t		seqcount;				\

	__SEQ_LOCK(locktype	*lock);					\

} seqcount_##lockname##_t;						\

									\

static __always_inline seqcount_t *					\

__seqcount_##lockname##_ptr(seqcount_##lockname##_t *s)			\

{									\

	return &s->seqcount;						\

}									\

									\

static inline bool							\

__seqcount_##locktype##_preemptible(seqcount_##locktype##_t *s)		\

static __always_inline bool						\

__seqcount_##lockname##_preemptible(seqcount_##lockname##_t *s)		\

{									\

	return preempt;							\

	return preemptible;						\

}									\

									\

static inline void							\

__seqcount_##locktype##_assert(seqcount_##locktype##_t *s)		\

static __always_inline void						\

__seqcount_##lockname##_assert(seqcount_##lockname##_t *s)		\

{									\

	__SEQ_LOCK(lockdep_assert_held(lockmember));			\

}

/*

 * Similar hooks, but for plain seqcount_t

 * __seqprop() for seqcount_t

 */

static inline seqcount_t *__seqcount_ptr(seqcount_t *s)

	lockdep_assert_preemption_disabled();

}

/*

 * @s: Pointer to seqcount_locktype_t, generated hooks first parameter.

 */

SEQCOUNT_LOCKTYPE(raw_spinlock,	false,	s->lock)

SEQCOUNT_LOCKTYPE(spinlock,	false,	s->lock)

SEQCOUNT_LOCKTYPE(rwlock,	false,	s->lock)

SEQCOUNT_LOCKTYPE(mutex,	true,	s->lock)

SEQCOUNT_LOCKTYPE(ww_mutex,	true,	&s->lock->base)

SEQCOUNT_LOCKTYPE(raw_spinlock_t,	raw_spinlock,	false,	s->lock)

SEQCOUNT_LOCKTYPE(spinlock_t,		spinlock,	false,	s->lock)

SEQCOUNT_LOCKTYPE(rwlock_t,		rwlock,		false,	s->lock)

SEQCOUNT_LOCKTYPE(struct mutex,		mutex,		true,	s->lock)

SEQCOUNT_LOCKTYPE(struct ww_mutex,	ww_mutex,	true,	&s->lock->base)

#define __seqprop_case(s, locktype, prop)				\

	seqcount_##locktype##_t: __seqcount_##locktype##_##prop((void *)(s))

#define __seqprop_case(s, lockname, prop)				\

	seqcount_##lockname##_t: __seqcount_##lockname##_##prop((void *)(s))

#define __seqprop(s, prop) _Generic(*(s),				\

	seqcount_t:		__seqcount_##prop((void *)(s)),		\