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Diffstat (limited to 'include/asm-ppc/spinlock.h')
-rw-r--r--include/asm-ppc/spinlock.h91
1 files changed, 20 insertions, 71 deletions
diff --git a/include/asm-ppc/spinlock.h b/include/asm-ppc/spinlock.h
index 909199a..20edcf2a 100644
--- a/include/asm-ppc/spinlock.h
+++ b/include/asm-ppc/spinlock.h
@@ -5,41 +5,21 @@
/*
* Simple spin lock operations.
+ *
+ * (the type definitions are in asm/raw_spinlock_types.h)
*/
-typedef struct {
- volatile unsigned long lock;
-#ifdef CONFIG_DEBUG_SPINLOCK
- volatile unsigned long owner_pc;
- volatile unsigned long owner_cpu;
-#endif
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} spinlock_t;
-
-#ifdef __KERNEL__
-#ifdef CONFIG_DEBUG_SPINLOCK
-#define SPINLOCK_DEBUG_INIT , 0, 0
-#else
-#define SPINLOCK_DEBUG_INIT /* */
-#endif
-
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 SPINLOCK_DEBUG_INIT }
-
-#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0)
-#define spin_is_locked(x) ((x)->lock != 0)
-#define spin_unlock_wait(x) do { barrier(); } while(spin_is_locked(x))
-#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
-
-#ifndef CONFIG_DEBUG_SPINLOCK
-
-static inline void _raw_spin_lock(spinlock_t *lock)
+#define __raw_spin_is_locked(x) ((x)->lock != 0)
+#define __raw_spin_unlock_wait(lock) \
+ do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0)
+#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
+
+static inline void __raw_spin_lock(raw_spinlock_t *lock)
{
unsigned long tmp;
__asm__ __volatile__(
- "b 1f # spin_lock\n\
+ "b 1f # __raw_spin_lock\n\
2: lwzx %0,0,%1\n\
cmpwi 0,%0,0\n\
bne+ 2b\n\
@@ -55,21 +35,13 @@ static inline void _raw_spin_lock(spinlock_t *lock)
: "cr0", "memory");
}
-static inline void _raw_spin_unlock(spinlock_t *lock)
+static inline void __raw_spin_unlock(raw_spinlock_t *lock)
{
- __asm__ __volatile__("eieio # spin_unlock": : :"memory");
+ __asm__ __volatile__("eieio # __raw_spin_unlock": : :"memory");
lock->lock = 0;
}
-#define _raw_spin_trylock(l) (!test_and_set_bit(0,&(l)->lock))
-
-#else
-
-extern void _raw_spin_lock(spinlock_t *lock);
-extern void _raw_spin_unlock(spinlock_t *lock);
-extern int _raw_spin_trylock(spinlock_t *lock);
-
-#endif
+#define __raw_spin_trylock(l) (!test_and_set_bit(0,&(l)->lock))
/*
* Read-write spinlocks, allowing multiple readers
@@ -81,22 +53,11 @@ extern int _raw_spin_trylock(spinlock_t *lock);
* irq-safe write-lock, but readers can get non-irqsafe
* read-locks.
*/
-typedef struct {
- volatile signed int lock;
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} rwlock_t;
-#define RW_LOCK_UNLOCKED (rwlock_t) { 0 }
-#define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while(0)
+#define __raw_read_can_lock(rw) ((rw)->lock >= 0)
+#define __raw_write_can_lock(rw) (!(rw)->lock)
-#define read_can_lock(rw) ((rw)->lock >= 0)
-#define write_can_lock(rw) (!(rw)->lock)
-
-#ifndef CONFIG_DEBUG_SPINLOCK
-
-static __inline__ int _raw_read_trylock(rwlock_t *rw)
+static __inline__ int __raw_read_trylock(raw_rwlock_t *rw)
{
signed int tmp;
@@ -116,7 +77,7 @@ static __inline__ int _raw_read_trylock(rwlock_t *rw)
return tmp > 0;
}
-static __inline__ void _raw_read_lock(rwlock_t *rw)
+static __inline__ void __raw_read_lock(raw_rwlock_t *rw)
{
signed int tmp;
@@ -137,7 +98,7 @@ static __inline__ void _raw_read_lock(rwlock_t *rw)
: "cr0", "memory");
}
-static __inline__ void _raw_read_unlock(rwlock_t *rw)
+static __inline__ void __raw_read_unlock(raw_rwlock_t *rw)
{
signed int tmp;
@@ -153,7 +114,7 @@ static __inline__ void _raw_read_unlock(rwlock_t *rw)
: "cr0", "memory");
}
-static __inline__ int _raw_write_trylock(rwlock_t *rw)
+static __inline__ int __raw_write_trylock(raw_rwlock_t *rw)
{
signed int tmp;
@@ -173,7 +134,7 @@ static __inline__ int _raw_write_trylock(rwlock_t *rw)
return tmp == 0;
}
-static __inline__ void _raw_write_lock(rwlock_t *rw)
+static __inline__ void __raw_write_lock(raw_rwlock_t *rw)
{
signed int tmp;
@@ -194,22 +155,10 @@ static __inline__ void _raw_write_lock(rwlock_t *rw)
: "cr0", "memory");
}
-static __inline__ void _raw_write_unlock(rwlock_t *rw)
+static __inline__ void __raw_write_unlock(raw_rwlock_t *rw)
{
__asm__ __volatile__("eieio # write_unlock": : :"memory");
rw->lock = 0;
}
-#else
-
-extern void _raw_read_lock(rwlock_t *rw);
-extern void _raw_read_unlock(rwlock_t *rw);
-extern void _raw_write_lock(rwlock_t *rw);
-extern void _raw_write_unlock(rwlock_t *rw);
-extern int _raw_read_trylock(rwlock_t *rw);
-extern int _raw_write_trylock(rwlock_t *rw);
-
-#endif
-
#endif /* __ASM_SPINLOCK_H */
-#endif /* __KERNEL__ */