Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 12 insertions, 0 deletions

diff --git a/include/asm-ia64/atomic.h b/include/asm-ia64/atomic.h
index 874a6f890e75..2fbebf85c31d 100644
--- a/include/asm-ia64/atomic.h
+++ b/include/asm-ia64/atomic.h
@@ -88,6 +88,18 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v)
         return new;
 }
 
+#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+
+#define atomic_add_unless(v, a, u)                              \
+({                                                              \
+        int c, old;                                             \
+        c = atomic_read(v);                                     \
+        while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+                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);                                         \