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