patch-2_6_7-vs1_9_1_12

[linux-2.6.git] / include / asm-sparc64 / atomic.h

diff --git a/include/asm-sparc64/atomic.h b/include/asm-sparc64/atomic.h
index 7ccccc3..5374f5b 100644 (file)
--- a/include/asm-sparc64/atomic.h
+++ b/include/asm-sparc64/atomic.h
@@ -40,6 +40,16 @@ extern int __atomic64_sub(__s64, atomic64_t *);
 #define atomic_inc_return(v) __atomic_add(1, v)
 #define atomic64_inc_return(v) __atomic64_add(1, v)
 
+/*
+ * 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)
+
 #define atomic_sub_and_test(i, v) (__atomic_sub(i, v) == 0)
 #define atomic64_sub_and_test(i, v) (__atomic64_sub(i, v) == 0)
 
@@ -52,6 +62,9 @@ extern int __atomic64_sub(__s64, atomic64_t *);
 #define atomic_dec(v) ((void)__atomic_sub(1, v))
 #define atomic64_dec(v) ((void)__atomic64_sub(1, v))
 
+#define atomic_add_negative(i, v) (__atomic_add(i, v) < 0)
+#define atomic64_add_negative(i, v) (__atomic64_add(i, v) < 0)
+
 /* Atomic operations are already serializing */
 #define smp_mb__before_atomic_dec()    barrier()
 #define smp_mb__after_atomic_dec()     barrier()