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 
block_range__next(struct block_range * br)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 
block_range_iter(struct block_range_iter * iter)51 static inline struct block_range *block_range_iter(struct block_range_iter *iter)
52 {
53 	return iter->start;
54 }
55 
block_range_iter__next(struct block_range_iter * iter)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 
block_range_iter__valid(struct block_range_iter * iter)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 */
77