patch-2_6_7-vs1_9_1_12

[linux-2.6.git] / include / asm-ppc64 / atomic.h

diff --git a/include/asm-ppc64/atomic.h b/include/asm-ppc64/atomic.h
index 00617e2..0e5f25e 100644 (file)
--- a/include/asm-ppc64/atomic.h
+++ b/include/asm-ppc64/atomic.h
@@ -54,6 +54,8 @@ static __inline__ int atomic_add_return(int a, atomic_t *v)
        return t;
 }
 
+#define atomic_add_negative(a, v)      (atomic_add_return((a), (v)) < 0)
+
 static __inline__ void atomic_sub(int a, atomic_t *v)
 {
        int t;
@@ -118,6 +120,16 @@ static __inline__ int atomic_inc_return(atomic_t *v)
        return t;
 }
 
+/*
+ * atomic_inc_and_test - increment and test
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1
+ * and returns true if the result is zero, or false for all
+ * other cases.
+ */
+#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
+
 static __inline__ void atomic_dec(atomic_t *v)
 {
        int t;