X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-ia64%2Fatomic.h;h=569ec7574baf24b01ce450c4f6a5cdc32d805a60;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=874a6f890e75c14fc2677c1b29252ef60b662234;hpb=9bf4aaab3e101692164d49b7ca357651eb691cb6;p=linux-2.6.git

diff --git a/include/asm-ia64/atomic.h b/include/asm-ia64/atomic.h
index 874a6f890..569ec7574 100644
--- a/include/asm-ia64/atomic.h
+++ b/include/asm-ia64/atomic.h
@@ -88,6 +88,25 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v)
 	return new;
 }
 
+#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	for (;;) {						\
+		if (unlikely(c == (u)))				\
+			break;					\
+		old = atomic_cmpxchg((v), c, c + (a));		\
+		if (likely(old == c))				\
+			break;					\
+		c = old;					\
+	}							\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_add_return(i,v)						\
 ({									\
 	int __ia64_aar_i = (i);						\
@@ -180,4 +199,5 @@ atomic64_add_negative (__s64 i, atomic64_t *v)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
+#include <asm-generic/atomic.h>
 #endif /* _ASM_IA64_ATOMIC_H */