LXR linux/include/linux/range.h

   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
  16int add_range(struct range *range, int az, int nr_range,
  17                u64 start, u64 end);
  18
  19
  20int add_range_with_merge(struct range *range, int az, int nr_range,
  21                                u64 start, u64 end);
  22
  23void subtract_range(struct range *range, int az, u64 start, u64 end);
  24
  25int clean_sort_range(struct range *range, int az);
  26
  27void sort_range(struct range *range, int nr_range);
  28
  29#define MAX_RESOURCE ((resource_size_t)~0)
  30static inline resource_size_t cap_resource(u64 val)
  31{
  32        if (val > MAX_RESOURCE)
  33                return MAX_RESOURCE;
  34
  35        return val;
  36}
  37#endif
  38