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 int add_range(struct range *range, int az, int nr_range, 17 u64 start, u64 end); 18 19 20 int add_range_with_merge(struct range *range, int az, int nr_range, 21 u64 start, u64 end); 22 23 void subtract_range(struct range *range, int az, u64 start, u64 end); 24 25 int clean_sort_range(struct range *range, int az); 26 27 void sort_range(struct range *range, int nr_range); 28 29 #define MAX_RESOURCE ((resource_size_t)~0) 30 static 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