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   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 "util.h"
   9 #include "symbol.h"
  10
  11 enum chain_mode {
  12         CHAIN_NONE,
  13         CHAIN_FLAT,
  14         CHAIN_GRAPH_ABS,
  15         CHAIN_GRAPH_REL
  16 };
  17
  18 struct callchain_node {
  19         struct callchain_node   *parent;
  20         struct list_head        brothers;
  21         struct list_head        children;
  22         struct list_head        val;
  23         struct rb_node          rb_node; /* to sort nodes in an rbtree */
  24         struct rb_root          rb_root; /* sorted tree of children */
  25         unsigned int            val_nr;
  26         u64                     hit;
  27         u64                     children_hit;
  28 };
  29
  30 struct callchain_param;
  31
  32 typedef void (*sort_chain_func_t)(struct rb_root *, struct callchain_node *,
  33                                  u64, struct callchain_param *);
  34
  35 struct callchain_param {
  36         enum chain_mode         mode;
  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
  54 static inline u64 cumul_hits(struct callchain_node *node)
  55 {
  56         return node->hit + node->children_hit;
  57 }
  58
  59 int register_callchain_param(struct callchain_param *param);
  60 int append_chain(struct callchain_node *root, struct ip_callchain *chain,
  61                  struct map_symbol *syms);
  62
  63 bool ip_callchain__valid(struct ip_callchain *chain, event_t *event);
  64 #endif  /* __PERF_CALLCHAIN_H */