bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-07-08 00:23:23 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

seqlock: Fold seqcount_LOCKNAME_init() definition

Browse source 
Manual repetition is boring and error prone.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
This commit is contained in:
Peter Zijlstra 2020-07-23 12:00:53 +02:00
parent a8772dccb2
commit e4e9ab3f9f
1 changed files with 14 additions and 47 deletions
Download patch file Download diff file Expand all files Collapse all files

61
include/linux/seqlock.h
View file

@ -143,12 +143,6 @@ static inline void seqcount_lockdep_reader_access(const seqcount_t *s)
__SEQ_LOCK(.lock = (assoc_lock)) \ __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 * SEQCNT_SPINLOCK_ZERO - static initializer for seqcount_spinlock_t
* @name: Name of the seqcount_spinlock_t instance * @name: Name of the seqcount_spinlock_t instance
@ -157,14 +151,6 @@ do { \
#define SEQCNT_SPINLOCK_ZERO(name, lock) \ #define SEQCNT_SPINLOCK_ZERO(name, lock) \
SEQCOUNT_LOCKTYPE_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 * SEQCNT_RAW_SPINLOCK_ZERO - static initializer for seqcount_raw_spinlock_t
* @name: Name of the seqcount_raw_spinlock_t instance * @name: Name of the seqcount_raw_spinlock_t instance
@ -173,14 +159,6 @@ do { \
#define SEQCNT_RAW_SPINLOCK_ZERO(name, lock) \ #define SEQCNT_RAW_SPINLOCK_ZERO(name, lock) \
SEQCOUNT_LOCKTYPE_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 * SEQCNT_RWLOCK_ZERO - static initializer for seqcount_rwlock_t
* @name: Name of the seqcount_rwlock_t instance * @name: Name of the seqcount_rwlock_t instance
@ -189,14 +167,6 @@ do { \
#define SEQCNT_RWLOCK_ZERO(name, lock) \ #define SEQCNT_RWLOCK_ZERO(name, lock) \
SEQCOUNT_LOCKTYPE_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 * SEQCNT_MUTEX_ZERO - static initializer for seqcount_mutex_t
* @name: Name of the seqcount_mutex_t instance * @name: Name of the seqcount_mutex_t instance
@ -205,14 +175,6 @@ do { \
#define SEQCNT_MUTEX_ZERO(name, lock) \ #define SEQCNT_MUTEX_ZERO(name, lock) \
SEQCOUNT_LOCKTYPE_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 * SEQCNT_WW_MUTEX_ZERO - static initializer for seqcount_ww_mutex_t
* @name: Name of the seqcount_ww_mutex_t instance * @name: Name of the seqcount_ww_mutex_t instance
@ -222,15 +184,7 @@ do { \
SEQCOUNT_LOCKTYPE_ZERO(name, lock) SEQCOUNT_LOCKTYPE_ZERO(name, lock)
/** /**
* seqcount_ww_mutex_init - runtime initializer for seqcount_ww_mutex_t * typedef seqcount_LOCKNAME_t - sequence counter with LOCKTYPR associated
* @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
* @seqcount: The real sequence counter * @seqcount: The real sequence counter
* @lock: Pointer to the associated spinlock * @lock: Pointer to the associated spinlock
* *
@ -240,6 +194,12 @@ do { \
* that the write side critical section is properly serialized. * 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 * SEQCOUNT_LOCKTYPE() - Instantiate seqcount_LOCKNAME_t and helpers
* @locktype: actual typename * @locktype: actual typename
@ -253,6 +213,13 @@ typedef struct seqcount_##lockname { \
__SEQ_LOCK(locktype *lock); \ __SEQ_LOCK(locktype *lock); \
} seqcount_##lockname##_t; \ } 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 * \ static __always_inline seqcount_t * \
__seqcount_##lockname##_ptr(seqcount_##lockname##_t *s) \ __seqcount_##lockname##_ptr(seqcount_##lockname##_t *s) \
{ \ { \