perf: Initialize callchains roots's childen hits
[linux-2.6.git] / 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 "event.h"
8 #include "symbol.h"
9
10 enum chain_mode {
11         CHAIN_NONE,
12         CHAIN_FLAT,
13         CHAIN_GRAPH_ABS,
14         CHAIN_GRAPH_REL
15 };
16
17 struct 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
29 struct callchain_param;
30
31 typedef void (*sort_chain_func_t)(struct rb_root *, struct callchain_node *,
32                                  u64, struct callchain_param *);
33
34 struct callchain_param {
35         enum chain_mode         mode;
36         u32                     print_limit;
37         double                  min_percent;
38         sort_chain_func_t       sort;
39 };
40
41 struct callchain_list {
42         u64                     ip;
43         struct map_symbol       ms;
44         struct list_head        list;
45 };
46
47 static inline void callchain_init(struct callchain_node *node)
48 {
49         INIT_LIST_HEAD(&node->brothers);
50         INIT_LIST_HEAD(&node->children);
51         INIT_LIST_HEAD(&node->val);
52
53         node->children_hit = 0;
54         node->parent = NULL;
55         node->hit = 0;
56 }
57
58 static inline u64 cumul_hits(struct callchain_node *node)
59 {
60         return node->hit + node->children_hit;
61 }
62
63 int register_callchain_param(struct callchain_param *param);
64 int append_chain(struct callchain_node *root, struct ip_callchain *chain,
65                  struct map_symbol *syms, u64 period);
66
67 bool ip_callchain__valid(struct ip_callchain *chain, const event_t *event);
68 #endif  /* __PERF_CALLCHAIN_H */