Add cmpxchg_local to sparc, move __cmpxchg to system.h

[linux-2.6-omap-h63xx.git] / include / asm-sparc / atomic.h

diff --git a/include/asm-sparc/atomic.h b/include/asm-sparc/atomic.h
index 3328950dbfe6de8df7f8ae1dbad525f9636f38bb..5c944b5a804003f5cc2a87b7972e5c22cd18ceb7 100644 (file)
--- a/include/asm-sparc/atomic.h
+++ b/include/asm-sparc/atomic.h
@@ -17,42 +17,6 @@ typedef struct { volatile int counter; } atomic_t;
 
 #ifdef __KERNEL__
 
-/* Emulate cmpxchg() the same way we emulate atomics,
- * by hashing the object address and indexing into an array
- * of spinlocks to get a bit of performance...
- *
- * See arch/sparc/lib/atomic32.c for implementation.
- *
- * Cribbed from <asm-parisc/atomic.h>
- */
-#define __HAVE_ARCH_CMPXCHG    1
-
-/* bug catcher for when unsupported size is used - won't link */
-extern void __cmpxchg_called_with_bad_pointer(void);
-/* we only need to support cmpxchg of a u32 on sparc */
-extern unsigned long __cmpxchg_u32(volatile u32 *m, u32 old, u32 new_);
-
-/* don't worry...optimizer will get rid of most of this */
-static inline unsigned long
-__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size)
-{
-       switch(size) {
-       case 4:
-               return __cmpxchg_u32((u32 *)ptr, (u32)old, (u32)new_);
-       default:
-               __cmpxchg_called_with_bad_pointer();
-               break;
-       }
-       return old;
-}
-
-#define cmpxchg(ptr,o,n) ({                                            \
-       __typeof__(*(ptr)) _o_ = (o);                                   \
-       __typeof__(*(ptr)) _n_ = (n);                                   \
-       (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_,       \
-                       (unsigned long)_n_, sizeof(*(ptr)));            \
-})
-
 #define ATOMIC_INIT(i)  { (i) }
 
 extern int __atomic_add_return(int, atomic_t *);