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locking/qrwlock: Rename ->lock to ->wait_lock

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... trivial, but reads a little nicer when we name our
actual primitive 'lock'.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <Waiman.Long@hpe.com>
Link: http://lkml.kernel.org/r/1442216244-4409-1-git-send-email-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Davidlohr Bueso 2015-09-14 00:37:22 -07:00 committed by Ingo Molnar
parent e58cdf585a
commit 6e1e519697
2 changed files with 6 additions and 6 deletions
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4
include/asm-generic/qrwlock_types.h
View File

@ -10,12 +10,12 @@
typedef struct qrwlock {
atomic_t cnts;
arch_spinlock_t lock;
arch_spinlock_t wait_lock;
} arch_rwlock_t;
#define __ARCH_RW_LOCK_UNLOCKED { \
.cnts = ATOMIC_INIT(0), \
.lock = __ARCH_SPIN_LOCK_UNLOCKED, \
.wait_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
}
#endif /* __ASM_GENERIC_QRWLOCK_TYPES_H */

8
kernel/locking/qrwlock.c
View File

@ -86,7 +86,7 @@ void queued_read_lock_slowpath(struct qrwlock *lock, u32 cnts)
/*
* Put the reader into the wait queue
*/
arch_spin_lock(&lock->lock);
arch_spin_lock(&lock->wait_lock);
/*
* The ACQUIRE semantics of the following spinning code ensure
@ -99,7 +99,7 @@ void queued_read_lock_slowpath(struct qrwlock *lock, u32 cnts)
/*
* Signal the next one in queue to become queue head
*/
arch_spin_unlock(&lock->lock);
arch_spin_unlock(&lock->wait_lock);
}
EXPORT_SYMBOL(queued_read_lock_slowpath);
@ -112,7 +112,7 @@ void queued_write_lock_slowpath(struct qrwlock *lock)
u32 cnts;
/* Put the writer into the wait queue */
arch_spin_lock(&lock->lock);
arch_spin_lock(&lock->wait_lock);
/* Try to acquire the lock directly if no reader is present */
if (!atomic_read(&lock->cnts) &&
@ -144,6 +144,6 @@ void queued_write_lock_slowpath(struct qrwlock *lock)
cpu_relax_lowlatency();
}
unlock:
arch_spin_unlock(&lock->lock);
arch_spin_unlock(&lock->wait_lock);
}
EXPORT_SYMBOL(queued_write_lock_slowpath);