1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_RANGE_H
3#define _LINUX_RANGE_H
4#include <linux/types.h>
5
6struct range {
7 u64 start;
8 u64 end;
9};
10
11static inline u64 range_len(const struct range *range)
12{
13 return range->end - range->start + 1;
14}
15
16/* True if r1 completely contains r2 */
17static inline bool range_contains(const struct range *r1,
18 const struct range *r2)
19{
20 return r1->start <= r2->start && r1->end >= r2->end;
21}
22
23/* True if any part of r1 overlaps r2 */
24static inline bool range_overlaps(const struct range *r1,
25 const struct range *r2)
26{
27 return r1->start <= r2->end && r1->end >= r2->start;
28}
29
30int add_range(struct range *range, int az, int nr_range,
31 u64 start, u64 end);
32
33
34int add_range_with_merge(struct range *range, int az, int nr_range,
35 u64 start, u64 end);
36
37void subtract_range(struct range *range, int az, u64 start, u64 end);
38
39int clean_sort_range(struct range *range, int az);
40
41void sort_range(struct range *range, int nr_range);
42
43#define DEFINE_RANGE(_start, _end) \
44(struct range) { \
45 .start = (_start), \
46 .end = (_end), \
47 }
48
49#endif
50