release/src-rt-6.x.4708/linux/linux-2.6.36/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 */