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 "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         u32                     print_limit;
  38         double                  min_percent;
  39         sort_chain_func_t       sort;
  40 };
  41
  42 struct callchain_list {
  43         u64                     ip;
  44         struct map_symbol       ms;
  45         struct list_head        list;
  46 };
  47
  48 static inline void callchain_init(struct callchain_node *node)
  49 {
  50         INIT_LIST_HEAD(&node->brothers);
  51         INIT_LIST_HEAD(&node->children);
  52         INIT_LIST_HEAD(&node->val);
  53 }
  54
  55 static inline u64 cumul_hits(struct callchain_node *node)
  56 {
  57         return node->hit + node->children_hit;
  58 }
  59
  60 int register_callchain_param(struct callchain_param *param);
  61 int append_chain(struct callchain_node *root, struct ip_callchain *chain,
  62                  struct map_symbol *syms);
  63
  64 bool ip_callchain__valid(struct ip_callchain *chain, event_t *event);
  65 #endif  /* __PERF_CALLCHAIN_H */