4 files changed, 50 insertions, 0 deletions
diff --git a/scripts/atomic/fallbacks/inc b/scripts/atomic/fallbacks/inc
new file mode 100755
index 000000000..3c2c37391
--- /dev/null
+++ b/scripts/atomic/fallbacks/inc
@@ -0,0 +1,7 @@
+cat <<EOF
+static __always_inline ${ret}
+arch_${atomic}_${pfx}inc${sfx}${order}(${atomic}_t *v)
+{
+	${retstmt}arch_${atomic}_${pfx}add${sfx}${order}(1, v);
+}
+EOF
diff --git a/scripts/atomic/fallbacks/inc_and_test b/scripts/atomic/fallbacks/inc_and_test
new file mode 100755
index 000000000..0cf23fe1e
--- /dev/null
+++ b/scripts/atomic/fallbacks/inc_and_test
@@ -0,0 +1,15 @@
+cat <<EOF
+/**
+ * arch_${atomic}_inc_and_test - increment and test
+ * @v: pointer of type ${atomic}_t
+ *
+ * Atomically increments @v by 1
+ * and returns true if the result is zero, or false for all
+ * other cases.
+ */
+static __always_inline bool
+arch_${atomic}_inc_and_test(${atomic}_t *v)
+{
+	return arch_${atomic}_inc_return(v) == 0;
+}
+EOF
diff --git a/scripts/atomic/fallbacks/inc_not_zero b/scripts/atomic/fallbacks/inc_not_zero
new file mode 100755
index 000000000..ed8a1f562
--- /dev/null
+++ b/scripts/atomic/fallbacks/inc_not_zero
@@ -0,0 +1,14 @@
+cat <<EOF
+/**
+ * arch_${atomic}_inc_not_zero - increment unless the number is zero
+ * @v: pointer of type ${atomic}_t
+ *
+ * Atomically increments @v by 1, if @v is non-zero.
+ * Returns true if the increment was done.
+ */
+static __always_inline bool
+arch_${atomic}_inc_not_zero(${atomic}_t *v)
+{
+	return arch_${atomic}_add_unless(v, 1, 0);
+}
+EOF
diff --git a/scripts/atomic/fallbacks/inc_unless_negative b/scripts/atomic/fallbacks/inc_unless_negative
new file mode 100755
index 000000000..95d8ce482
--- /dev/null
+++ b/scripts/atomic/fallbacks/inc_unless_negative
@@ -0,0 +1,14 @@
+cat <<EOF
+static __always_inline bool
+arch_${atomic}_inc_unless_negative(${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