1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_RANGE_H 3 #define _LINUX_RANGE_H 4 #include <linux/types.h> 5 6 struct range { 7 u64 start; 8 u64 end; 9 }; 10 11 static inline u64 range_len(const struct range *range) 12 { 13 return range->end - range->start + 1; 14 } 15 16 static inline bool range_contains(struct range *r1, struct range *r2) 17 { 18 return r1->start <= r2->start && r1->end >= r2->end; 19 } 20 21 int add_range(struct range *range, int az, int nr_range, 22 u64 start, u64 end); 23 24 25 int add_range_with_merge(struct range *range, int az, int nr_range, 26 u64 start, u64 end); 27 28 void subtract_range(struct range *range, int az, u64 start, u64 end); 29 30 int clean_sort_range(struct range *range, int az); 31 32 void sort_range(struct range *range, int nr_range); 33 34 #define MAX_RESOURCE ((resource_size_t)~0) 35 static inline resource_size_t cap_resource(u64 val) 36 { 37 if (val > MAX_RESOURCE) 38 return MAX_RESOURCE; 39 40 return val; 41 } 42 #endif 43