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Date: Fri, 19 Jun 2015 11:50:00 -0400
From: Waiman Long <Waiman.Long@...com>
To: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>, Arnd Bergmann <arnd@...db.de>
Cc: linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
Will Deacon <will.deacon@....com>,
Scott J Norton <scott.norton@...com>,
Douglas Hatch <doug.hatch@...com>,
Waiman Long <Waiman.Long@...com>
Subject: [PATCH v5 1/3] 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@...com>
---
arch/x86/include/asm/qrwlock.h | 4 +-
include/asm-generic/qrwlock.h | 58 ++++++++++++++++++++--------------------
kernel/locking/qrwlock.c | 12 ++++----
3 files changed, 37 insertions(+), 37 deletions(-)
diff --git a/arch/x86/include/asm/qrwlock.h b/arch/x86/include/asm/qrwlock.h
index ae0e241..a8810bf 100644
--- a/arch/x86/include/asm/qrwlock.h
+++ b/arch/x86/include/asm/qrwlock.h
@@ -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;
diff --git a/include/asm-generic/qrwlock.h b/include/asm-generic/qrwlock.h
index 6383d54..55e3ee1 100644
--- a/include/asm-generic/qrwlock.h
+++ b/include/asm-generic/qrwlock.h
@@ -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 */
diff --git a/kernel/locking/qrwlock.c b/kernel/locking/qrwlock.c
index 00c12bb..9c2deed 100644
--- a/kernel/locking/qrwlock.c
+++ b/kernel/locking/qrwlock.c
@@ -40,10 +40,10 @@ 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;
@@ -84,13 +84,13 @@ 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;
@@ -129,4 +129,4 @@ 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);
--
1.7.1
--
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