1 files changed, 14 insertions, 0 deletions
diff --git a/scripts/atomic/fallbacks/dec_unless_positive b/scripts/atomic/fallbacks/dec_unless_positive
new file mode 100755
index 000000000..c531d5afe
--- /dev/null
+++ b/scripts/atomic/fallbacks/dec_unless_positive
@@ -0,0 +1,14 @@
+cat <<EOF
+static __always_inline bool
+arch_${atomic}_dec_unless_positive(${atomic}_t *v)
+{
+	${int} c = arch_${atomic}_read(v);
+
+	do {
+		if (unlikely(c > 0))
+			return false;
+	} while (!arch_${atomic}_try_cmpxchg(v, &c, c - 1));
+
+	return true;
+}
+EOF