Merge tag 'v6.18' into next

Sync up with the mainline to bring in the latest APIs.

1 files changed, 22 insertions, 0 deletions

diff --git a/tools/include/linux/atomic.h b/tools/include/linux/atomic.h
index 01907b33537e..50c66ba9ada5 100644
--- a/tools/include/linux/atomic.h
+++ b/tools/include/linux/atomic.h
@@ -12,4 +12,26 @@ void atomic_long_set(atomic_long_t *v, long i);
 #define  atomic_cmpxchg_release         atomic_cmpxchg
 #endif /* atomic_cmpxchg_relaxed */
 
+static inline bool atomic_try_cmpxchg(atomic_t *ptr, int *oldp, int new)
+{
+	int ret, old = *oldp;
+
+	ret = atomic_cmpxchg(ptr, old, new);
+	if (ret != old)
+		*oldp = ret;
+	return ret == old;
+}
+
+static inline bool atomic_inc_unless_negative(atomic_t *v)
+{
+	int c = atomic_read(v);
+
+	do {
+		if (unlikely(c < 0))
+			return false;
+	} while (!atomic_try_cmpxchg(v, &c, c + 1));
+
+	return true;
+}
+
 #endif /* __TOOLS_LINUX_ATOMIC_H */