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#ifndef __PERF_CALLCHAIN_H
#define __PERF_CALLCHAIN_H
#include "../perf.h"
#include <linux/list.h>
#include <linux/rbtree.h>
#include "event.h"
#include "symbol.h"
enum chain_mode {
CHAIN_NONE,
CHAIN_FLAT,
CHAIN_GRAPH_ABS,
CHAIN_GRAPH_REL
};
struct callchain_node {
struct callchain_node *parent;
struct list_head brothers;
struct list_head children;
struct list_head val;
struct rb_node rb_node; /* to sort nodes in an rbtree */
struct rb_root rb_root; /* sorted tree of children */
unsigned int val_nr;
u64 hit;
u64 children_hit;
};
struct callchain_root {
u64 max_depth;
struct callchain_node node;
};
struct callchain_param;
typedef void (*sort_chain_func_t)(struct rb_root *, struct callchain_root *,
u64, struct callchain_param *);
struct callchain_param {
enum chain_mode mode;
u32 print_limit;
double min_percent;
sort_chain_func_t sort;
};
struct callchain_list {
u64 ip;
struct map_symbol ms;
struct list_head list;
};
static inline void callchain_init(struct callchain_root *root)
{
INIT_LIST_HEAD(&root->node.brothers);
INIT_LIST_HEAD(&root->node.children);
INIT_LIST_HEAD(&root->node.val);
root->node.parent = NULL;
root->node.hit = 0;
root->node.children_hit = 0;
root->max_depth = 0;
}
static inline u64 cumul_hits(struct callchain_node *node)
{
return node->hit + node->children_hit;
}
int register_callchain_param(struct callchain_param *param);
int callchain_append(struct callchain_root *root, struct ip_callchain *chain,
struct map_symbol *syms, u64 period);
int callchain_merge(struct callchain_root *dst, struct callchain_root *src);
bool ip_callchain__valid(struct ip_callchain *chain, const event_t *event);
#endif /* __PERF_CALLCHAIN_H */
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