[PATCH] atomic: cmpxchg

[linux-3.10.git] / include / asm-alpha / atomic.h

diff --git a/include/asm-alpha/atomic.h b/include/asm-alpha/atomic.h
index 20ac3d95ecd9ae34ab3fcba2c58a5656c72be6d7..a6660809a879c99c14b2d935a2fe941ff48bdc96 100644 (file)
--- a/include/asm-alpha/atomic.h
+++ b/include/asm-alpha/atomic.h
@@ -177,6 +177,8 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
        return result;
 }
 
+#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+
 #define atomic_dec_return(v) atomic_sub_return(1,(v))
 #define atomic64_dec_return(v) atomic64_sub_return(1,(v))