1 files changed, 16 insertions, 0 deletions
diff --git a/scripts/atomic/fallbacks/add_unless b/scripts/atomic/fallbacks/add_unless
new file mode 100755
index 000000000..2ff598a3f
--- /dev/null
+++ b/scripts/atomic/fallbacks/add_unless
@@ -0,0 +1,16 @@
+cat << EOF
+/**
+ * ${arch}${atomic}_add_unless - add unless the number is already a given value
+ * @v: pointer of type ${atomic}_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, if @v was not already @u.
+ * Returns true if the addition was done.
+ */
+static __always_inline bool
+${arch}${atomic}_add_unless(${atomic}_t *v, ${int} a, ${int} u)
+{
+	return ${arch}${atomic}_fetch_add_unless(v, a, u) != u;
+}
+EOF