Root/tools/perf/util/callchain.h

1#ifndef __PERF_CALLCHAIN_H
2#define __PERF_CALLCHAIN_H
3
4#include "../perf.h"
5#include <linux/list.h>
6#include <linux/rbtree.h>
7#include "util.h"
8#include "symbol.h"
9
10enum chain_mode {
11    CHAIN_NONE,
12    CHAIN_FLAT,
13    CHAIN_GRAPH_ABS,
14    CHAIN_GRAPH_REL
15};
16
17struct callchain_node {
18    struct callchain_node *parent;
19    struct list_head brothers;
20    struct list_head children;
21    struct list_head val;
22    struct rb_node rb_node; /* to sort nodes in an rbtree */
23    struct rb_root rb_root; /* sorted tree of children */
24    unsigned int val_nr;
25    u64 hit;
26    u64 children_hit;
27};
28
29struct callchain_param;
30
31typedef void (*sort_chain_func_t)(struct rb_root *, struct callchain_node *,
32                 u64, struct callchain_param *);
33
34struct callchain_param {
35    enum chain_mode mode;
36    double min_percent;
37    sort_chain_func_t sort;
38};
39
40struct callchain_list {
41    u64 ip;
42    struct symbol *sym;
43    struct list_head list;
44};
45
46static inline void callchain_init(struct callchain_node *node)
47{
48    INIT_LIST_HEAD(&node->brothers);
49    INIT_LIST_HEAD(&node->children);
50    INIT_LIST_HEAD(&node->val);
51}
52
53static inline u64 cumul_hits(struct callchain_node *node)
54{
55    return node->hit + node->children_hit;
56}
57
58int register_callchain_param(struct callchain_param *param);
59void append_chain(struct callchain_node *root, struct ip_callchain *chain,
60          struct symbol **syms);
61#endif /* __PERF_CALLCHAIN_H */
62

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