tools/perf/util/block-range.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PERF_BLOCK_RANGE_H
   3 #define __PERF_BLOCK_RANGE_H
   4
   5 #include <stdbool.h>
   6 #include <linux/rbtree.h>
   7 #include <linux/types.h>
   8
   9 struct symbol;
  10
  11 /*
  12  * struct block_range - non-overlapping parts of basic blocks
  13  * @node:       treenode
  14  * @start:      inclusive start of range
  15  * @end:        inclusive end of range
  16  * @is_target:  @start is a jump target
  17  * @is_branch:  @end is a branch instruction
  18  * @coverage:   number of blocks that cover this range
  19  * @taken:      number of times the branch is taken (requires @is_branch)
  20  * @pred:       number of times the taken branch was predicted
  21  */
  22 struct block_range {
  23         struct rb_node node;
  24
  25         struct symbol *sym;
  26
  27         u64 start;
  28         u64 end;
  29
  30         int is_target, is_branch;
  31
  32         u64 coverage;
  33         u64 entry;
  34         u64 taken;
  35         u64 pred;
  36 };
  37
  38 static inline struct block_range *block_range__next(struct block_range *br)
  39 {
  40         struct rb_node *n = rb_next(&br->node);
  41         if (!n)
  42                 return NULL;
  43         return rb_entry(n, struct block_range, node);
  44 }
  45
  46 struct block_range_iter {
  47         struct block_range *start;
  48         struct block_range *end;
  49 };
  50
  51 static inline struct block_range *block_range_iter(struct block_range_iter *iter)
  52 {
  53         return iter->start;
  54 }
  55
  56 static inline bool block_range_iter__next(struct block_range_iter *iter)
  57 {
  58         if (iter->start == iter->end)
  59                 return false;
  60
  61         iter->start = block_range__next(iter->start);
  62         return true;
  63 }
  64
  65 static inline bool block_range_iter__valid(struct block_range_iter *iter)
  66 {
  67         if (!iter->start || !iter->end)
  68                 return false;
  69         return true;
  70 }
  71
  72 extern struct block_range *block_range__find(u64 addr);
  73 extern struct block_range_iter block_range__create(u64 start, u64 end);
  74 extern double block_range__coverage(struct block_range *br);
  75
  76 #endif /* __PERF_BLOCK_RANGE_H */