1 files changed, 25 insertions, 7 deletions
diff --git a/include/linux/range.h b/include/linux/range.h
index d1fbeb664012..d7f98e1285d7 100644
--- a/include/linux/range.h
+++ b/include/linux/range.h
@@ -1,12 +1,32 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _LINUX_RANGE_H
 #define _LINUX_RANGE_H
+#include <linux/types.h>
 
 struct range {
 	u64   start;
 	u64   end;
 };
 
+static inline u64 range_len(const struct range *range)
+{
+	return range->end - range->start + 1;
+}
+
+/* True if r1 completely contains r2 */
+static inline bool range_contains(const struct range *r1,
+				  const struct range *r2)
+{
+	return r1->start <= r2->start && r1->end >= r2->end;
+}
+
+/* True if any part of r1 overlaps r2 */
+static inline bool range_overlaps(const struct range *r1,
+				  const struct range *r2)
+{
+	return r1->start <= r2->end && r1->end >= r2->start;
+}
+
 int add_range(struct range *range, int az, int nr_range,
 		u64 start, u64 end);
 
@@ -20,12 +40,10 @@ int clean_sort_range(struct range *range, int az);
 
 void sort_range(struct range *range, int nr_range);
 
-#define MAX_RESOURCE ((resource_size_t)~0)
-static inline resource_size_t cap_resource(u64 val)
-{
-	if (val > MAX_RESOURCE)
-		return MAX_RESOURCE;
+#define DEFINE_RANGE(_start, _end)		\
+(struct range) {				\
+		.start = (_start),		\
+		.end = (_end),			\
+	}
 
-	return val;
-}
 #endif