Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / asm-ppc / spinlock.h

diff --git a/include/asm-ppc/spinlock.h b/include/asm-ppc/spinlock.h
index 909199a..5c64b75 100644 (file)
--- 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)->slock != 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\
@@ -51,25 +31,17 @@ static inline void _raw_spin_lock(spinlock_t *lock)
        bne-    2b\n\
        isync"
        : "=&r"(tmp)
-       : "r"(&lock->lock), "r"(1)
+       : "r"(&lock->slock), "r"(1)
        : "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");
-       lock->lock = 0;
+       __asm__ __volatile__("eieio     # __raw_spin_unlock": : :"memory");
+       lock->slock = 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,(volatile unsigned long *)(&(l)->slock)))
 
 /*
  * 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__ */