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locking/qrwlock: Rename functions to queued_*() 

To sync up with the naming convention used in qspinlock, all the
qrwlock functions were renamed to started with "queued" instead of
"queue".

Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Douglas Hatch <doug.hatch@hp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/r/1434729002-57724-2-git-send-email-Waiman.Long@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Waiman Long 2015-06-19 11:50:00 -04:00 committed by Ingo Molnar
parent 1c4c7159ed
commit f7d71f2052
3 changed files with 37 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/include/asm/qrwlock.h
View File

@ -4,8 +4,8 @@
#include <asm-generic/qrwlock_types.h>
#ifndef CONFIG_X86_PPRO_FENCE
#define queue_write_unlock queue_write_unlock
static inline void queue_write_unlock(struct qrwlock *lock)
#define queued_write_unlock queued_write_unlock
static inline void queued_write_unlock(struct qrwlock *lock)
{
barrier();
ACCESS_ONCE(*(u8 *)&lock->cnts) = 0;

58
include/asm-generic/qrwlock.h
View File

@ -36,33 +36,33 @@
/*
* External function declarations
*/
extern void queue_read_lock_slowpath(struct qrwlock *lock);
extern void queue_write_lock_slowpath(struct qrwlock *lock);
extern void queued_read_lock_slowpath(struct qrwlock *lock);
extern void queued_write_lock_slowpath(struct qrwlock *lock);
/**
* queue_read_can_lock- would read_trylock() succeed?
* queued_read_can_lock- would read_trylock() succeed?
* @lock: Pointer to queue rwlock structure
*/
static inline int queue_read_can_lock(struct qrwlock *lock)
static inline int queued_read_can_lock(struct qrwlock *lock)
{
return !(atomic_read(&lock->cnts) & _QW_WMASK);
}
/**
* queue_write_can_lock- would write_trylock() succeed?
* queued_write_can_lock- would write_trylock() succeed?
* @lock: Pointer to queue rwlock structure
*/
static inline int queue_write_can_lock(struct qrwlock *lock)
static inline int queued_write_can_lock(struct qrwlock *lock)
{
return !atomic_read(&lock->cnts);
}
/**
* queue_read_trylock - try to acquire read lock of a queue rwlock
* queued_read_trylock - try to acquire read lock of a queue rwlock
* @lock : Pointer to queue rwlock structure
* Return: 1 if lock acquired, 0 if failed
*/
static inline int queue_read_trylock(struct qrwlock *lock)
static inline int queued_read_trylock(struct qrwlock *lock)
{
u32 cnts;
@ -77,11 +77,11 @@ static inline int queue_read_trylock(struct qrwlock *lock)
}
/**
* queue_write_trylock - try to acquire write lock of a queue rwlock
* queued_write_trylock - try to acquire write lock of a queue rwlock
* @lock : Pointer to queue rwlock structure
* Return: 1 if lock acquired, 0 if failed
*/
static inline int queue_write_trylock(struct qrwlock *lock)
static inline int queued_write_trylock(struct qrwlock *lock)
{
u32 cnts;
@ -93,10 +93,10 @@ static inline int queue_write_trylock(struct qrwlock *lock)
cnts, cnts | _QW_LOCKED) == cnts);
}
/**
* queue_read_lock - acquire read lock of a queue rwlock
* queued_read_lock - acquire read lock of a queue rwlock
* @lock: Pointer to queue rwlock structure
*/
static inline void queue_read_lock(struct qrwlock *lock)
static inline void queued_read_lock(struct qrwlock *lock)
{
u32 cnts;
@ -105,27 +105,27 @@ static inline void queue_read_lock(struct qrwlock *lock)
return;
/* The slowpath will decrement the reader count, if necessary. */
queue_read_lock_slowpath(lock);
queued_read_lock_slowpath(lock);
}
/**
* queue_write_lock - acquire write lock of a queue rwlock
* queued_write_lock - acquire write lock of a queue rwlock
* @lock : Pointer to queue rwlock structure
*/
static inline void queue_write_lock(struct qrwlock *lock)
static inline void queued_write_lock(struct qrwlock *lock)
{
/* Optimize for the unfair lock case where the fair flag is 0. */
if (atomic_cmpxchg(&lock->cnts, 0, _QW_LOCKED) == 0)
return;
queue_write_lock_slowpath(lock);
queued_write_lock_slowpath(lock);
}
/**
* queue_read_unlock - release read lock of a queue rwlock
* queued_read_unlock - release read lock of a queue rwlock
* @lock : Pointer to queue rwlock structure
*/
static inline void queue_read_unlock(struct qrwlock *lock)
static inline void queued_read_unlock(struct qrwlock *lock)
{
/*
* Atomically decrement the reader count
@ -134,12 +134,12 @@ static inline void queue_read_unlock(struct qrwlock *lock)
atomic_sub(_QR_BIAS, &lock->cnts);
}
#ifndef queue_write_unlock
#ifndef queued_write_unlock
/**
* queue_write_unlock - release write lock of a queue rwlock
* queued_write_unlock - release write lock of a queue rwlock
* @lock : Pointer to queue rwlock structure
*/
static inline void queue_write_unlock(struct qrwlock *lock)
static inline void queued_write_unlock(struct qrwlock *lock)
{
/*
* If the writer field is atomic, it can be cleared directly.
@ -154,13 +154,13 @@ static inline void queue_write_unlock(struct qrwlock *lock)
* Remapping rwlock architecture specific functions to the corresponding
* queue rwlock functions.
*/
#define arch_read_can_lock(l) queue_read_can_lock(l)
#define arch_write_can_lock(l) queue_write_can_lock(l)
#define arch_read_lock(l) queue_read_lock(l)
#define arch_write_lock(l) queue_write_lock(l)
#define arch_read_trylock(l) queue_read_trylock(l)
#define arch_write_trylock(l) queue_write_trylock(l)
#define arch_read_unlock(l) queue_read_unlock(l)
#define arch_write_unlock(l) queue_write_unlock(l)
#define arch_read_can_lock(l) queued_read_can_lock(l)
#define arch_write_can_lock(l) queued_write_can_lock(l)
#define arch_read_lock(l) queued_read_lock(l)
#define arch_write_lock(l) queued_write_lock(l)
#define arch_read_trylock(l) queued_read_trylock(l)
#define arch_write_trylock(l) queued_write_trylock(l)
#define arch_read_unlock(l) queued_read_unlock(l)
#define arch_write_unlock(l) queued_write_unlock(l)
#endif /* __ASM_GENERIC_QRWLOCK_H */

12
kernel/locking/qrwlock.c
View File

@ -60,10 +60,10 @@ rspin_until_writer_unlock(struct qrwlock *lock, u32 cnts)
}
/**
* queue_read_lock_slowpath - acquire read lock of a queue rwlock
* queued_read_lock_slowpath - acquire read lock of a queue rwlock
* @lock: Pointer to queue rwlock structure
*/
void queue_read_lock_slowpath(struct qrwlock *lock)
void queued_read_lock_slowpath(struct qrwlock *lock)
{
u32 cnts;
@ -104,13 +104,13 @@ void queue_read_lock_slowpath(struct qrwlock *lock)
*/
arch_spin_unlock(&lock->lock);
}
EXPORT_SYMBOL(queue_read_lock_slowpath);
EXPORT_SYMBOL(queued_read_lock_slowpath);
/**
* queue_write_lock_slowpath - acquire write lock of a queue rwlock
* queued_write_lock_slowpath - acquire write lock of a queue rwlock
* @lock : Pointer to queue rwlock structure
*/
void queue_write_lock_slowpath(struct qrwlock *lock)
void queued_write_lock_slowpath(struct qrwlock *lock)
{
u32 cnts;
@ -149,4 +149,4 @@ void queue_write_lock_slowpath(struct qrwlock *lock)
unlock:
arch_spin_unlock(&lock->lock);
}
EXPORT_SYMBOL(queue_write_lock_slowpath);
EXPORT_SYMBOL(queued_write_lock_slowpath);