Add cmpxchg_local to avr32

[linux-2.6-omap-h63xx.git] / include / asm-avr32 / system.h

diff --git a/include/asm-avr32/system.h b/include/asm-avr32/system.h
index c600cc15cbcb640d2d7941f0991fb823dd8fd2f4..9702c2213e1e74d979fb914b286cfbfac8c1609d 100644 (file)
--- a/include/asm-avr32/system.h
+++ b/include/asm-avr32/system.h
@@ -145,6 +145,29 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
                                   (unsigned long)(new),        \
                                   sizeof(*(ptr))))
 
+#include <asm-generic/cmpxchg-local.h>
+
+static inline unsigned long __cmpxchg_local(volatile void *ptr,
+                                     unsigned long old,
+                                     unsigned long new, int size)
+{
+       switch (size) {
+       case 4:
+               return __cmpxchg_u32(ptr, old, new);
+       default:
+               return __cmpxchg_local_generic(ptr, old, new, size);
+       }
+
+       return old;
+}
+
+#define cmpxchg_local(ptr, old, new)                                   \
+       ((typeof(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(old),   \
+                                  (unsigned long)(new),                \
+                                  sizeof(*(ptr))))
+
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
 struct pt_regs;
 void NORET_TYPE die(const char *str, struct pt_regs *regs, long err);
 void _exception(long signr, struct pt_regs *regs, int code,