Commit e4e9ab3f authored by Peter Zijlstra's avatar Peter Zijlstra
Browse files

seqlock: Fold seqcount_LOCKNAME_init() definition



Manual repetition is boring and error prone.

Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
parent a8772dcc
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+14 −47
Original line number Diff line number Diff line
@@ -143,12 +143,6 @@ static inline void seqcount_lockdep_reader_access(const seqcount_t *s)
	__SEQ_LOCK(.lock	= (assoc_lock))				\
}

#define seqcount_locktype_init(s, assoc_lock)				\
do {									\
	seqcount_init(&(s)->seqcount);					\
	__SEQ_LOCK((s)->lock = (assoc_lock));				\
} while (0)

/**
 * SEQCNT_SPINLOCK_ZERO - static initializer for seqcount_spinlock_t
 * @name:	Name of the seqcount_spinlock_t instance
@@ -157,14 +151,6 @@ do { \
#define SEQCNT_SPINLOCK_ZERO(name, lock)				\
	SEQCOUNT_LOCKTYPE_ZERO(name, lock)

/**
 * seqcount_spinlock_init - runtime initializer for seqcount_spinlock_t
 * @s:		Pointer to the seqcount_spinlock_t instance
 * @lock:	Pointer to the associated spinlock
 */
#define seqcount_spinlock_init(s, lock)					\
	seqcount_locktype_init(s, lock)

/**
 * SEQCNT_RAW_SPINLOCK_ZERO - static initializer for seqcount_raw_spinlock_t
 * @name:	Name of the seqcount_raw_spinlock_t instance
@@ -173,14 +159,6 @@ do { \
#define SEQCNT_RAW_SPINLOCK_ZERO(name, lock)				\
	SEQCOUNT_LOCKTYPE_ZERO(name, lock)

/**
 * seqcount_raw_spinlock_init - runtime initializer for seqcount_raw_spinlock_t
 * @s:		Pointer to the seqcount_raw_spinlock_t instance
 * @lock:	Pointer to the associated raw_spinlock
 */
#define seqcount_raw_spinlock_init(s, lock)				\
	seqcount_locktype_init(s, lock)

/**
 * SEQCNT_RWLOCK_ZERO - static initializer for seqcount_rwlock_t
 * @name:	Name of the seqcount_rwlock_t instance
@@ -189,14 +167,6 @@ do { \
#define SEQCNT_RWLOCK_ZERO(name, lock)					\
	SEQCOUNT_LOCKTYPE_ZERO(name, lock)

/**
 * seqcount_rwlock_init - runtime initializer for seqcount_rwlock_t
 * @s:		Pointer to the seqcount_rwlock_t instance
 * @lock:	Pointer to the associated rwlock
 */
#define seqcount_rwlock_init(s, lock)					\
	seqcount_locktype_init(s, lock)

/**
 * SEQCNT_MUTEX_ZERO - static initializer for seqcount_mutex_t
 * @name:	Name of the seqcount_mutex_t instance
@@ -205,14 +175,6 @@ do { \
#define SEQCNT_MUTEX_ZERO(name, lock)					\
	SEQCOUNT_LOCKTYPE_ZERO(name, lock)

/**
 * seqcount_mutex_init - runtime initializer for seqcount_mutex_t
 * @s:		Pointer to the seqcount_mutex_t instance
 * @lock:	Pointer to the associated mutex
 */
#define seqcount_mutex_init(s, lock)					\
	seqcount_locktype_init(s, lock)

/**
 * SEQCNT_WW_MUTEX_ZERO - static initializer for seqcount_ww_mutex_t
 * @name:	Name of the seqcount_ww_mutex_t instance
@@ -222,15 +184,7 @@ do { \
	SEQCOUNT_LOCKTYPE_ZERO(name, lock)

/**
 * seqcount_ww_mutex_init - runtime initializer for seqcount_ww_mutex_t
 * @s:		Pointer to the seqcount_ww_mutex_t instance
 * @lock:	Pointer to the associated ww_mutex
 */
#define seqcount_ww_mutex_init(s, lock)					\
	seqcount_locktype_init(s, lock)

/**
 * typedef seqcount_LOCKNAME_t - sequence counter with spinlock associated
 * typedef seqcount_LOCKNAME_t - sequence counter with LOCKTYPR associated
 * @seqcount:	The real sequence counter
 * @lock:	Pointer to the associated spinlock
 *
@@ -240,6 +194,12 @@ do { \
 * that the write side critical section is properly serialized.
 */

/**
 * seqcount_LOCKNAME_init() - runtime initializer for seqcount_LOCKNAME_t
 * @s:		Pointer to the seqcount_LOCKNAME_t instance
 * @lock:	Pointer to the associated LOCKTYPE
 */

/*
 * SEQCOUNT_LOCKTYPE() - Instantiate seqcount_LOCKNAME_t and helpers
 * @locktype:		actual typename
@@ -253,6 +213,13 @@ typedef struct seqcount_##lockname { \
	__SEQ_LOCK(locktype	*lock);					\
} seqcount_##lockname##_t;						\
									\
static __always_inline void						\
seqcount_##lockname##_init(seqcount_##lockname##_t *s, locktype *lock)	\
{									\
	seqcount_init(&s->seqcount);					\
	__SEQ_LOCK(s->lock = lock);					\
}									\
									\
static __always_inline seqcount_t *					\
__seqcount_##lockname##_ptr(seqcount_##lockname##_t *s)			\
{									\