1 #ifndef __PERF_CALLCHAIN_H
2 #define __PERF_CALLCHAIN_H
5 #include <linux/list.h>
6 #include <linux/rbtree.h>
10 enum perf_call_graph_mode
{
30 struct callchain_node
{
31 struct callchain_node
*parent
;
33 struct rb_node rb_node_in
; /* to insert nodes in an rbtree */
34 struct rb_node rb_node
; /* to sort nodes in an output tree */
35 struct rb_root rb_root_in
; /* input tree of children */
36 struct rb_root rb_root
; /* sorted output tree of children */
42 struct callchain_root
{
44 struct callchain_node node
;
47 struct callchain_param
;
49 typedef void (*sort_chain_func_t
)(struct rb_root
*, struct callchain_root
*,
50 u64
, struct callchain_param
*);
57 struct callchain_param
{
59 enum perf_call_graph_mode record_mode
;
64 sort_chain_func_t sort
;
65 enum chain_order order
;
67 bool branch_callstack
;
70 extern struct callchain_param callchain_param
;
72 struct callchain_list
{
75 struct /* for TUI */ {
80 struct list_head list
;
84 * A callchain cursor is a single linked list that
85 * let one feed a callchain progressively.
86 * It keeps persistent allocated entries to minimize
89 struct callchain_cursor_node
{
93 struct callchain_cursor_node
*next
;
96 struct callchain_cursor
{
98 struct callchain_cursor_node
*first
;
99 struct callchain_cursor_node
**last
;
101 struct callchain_cursor_node
*curr
;
104 extern __thread
struct callchain_cursor callchain_cursor
;
106 static inline void callchain_init(struct callchain_root
*root
)
108 INIT_LIST_HEAD(&root
->node
.val
);
110 root
->node
.parent
= NULL
;
112 root
->node
.children_hit
= 0;
113 root
->node
.rb_root_in
= RB_ROOT
;
117 static inline u64
callchain_cumul_hits(struct callchain_node
*node
)
119 return node
->hit
+ node
->children_hit
;
122 int callchain_register_param(struct callchain_param
*param
);
123 int callchain_append(struct callchain_root
*root
,
124 struct callchain_cursor
*cursor
,
127 int callchain_merge(struct callchain_cursor
*cursor
,
128 struct callchain_root
*dst
, struct callchain_root
*src
);
131 * Initialize a cursor before adding entries inside, but keep
132 * the previously allocated entries as a cache.
134 static inline void callchain_cursor_reset(struct callchain_cursor
*cursor
)
137 cursor
->last
= &cursor
->first
;
140 int callchain_cursor_append(struct callchain_cursor
*cursor
, u64 ip
,
141 struct map
*map
, struct symbol
*sym
);
143 /* Close a cursor writing session. Initialize for the reader */
144 static inline void callchain_cursor_commit(struct callchain_cursor
*cursor
)
146 cursor
->curr
= cursor
->first
;
150 /* Cursor reading iteration helpers */
151 static inline struct callchain_cursor_node
*
152 callchain_cursor_current(struct callchain_cursor
*cursor
)
154 if (cursor
->pos
== cursor
->nr
)
160 static inline void callchain_cursor_advance(struct callchain_cursor
*cursor
)
162 cursor
->curr
= cursor
->curr
->next
;
169 int record_parse_callchain_opt(const struct option
*opt
, const char *arg
, int unset
);
170 int record_callchain_opt(const struct option
*opt
, const char *arg
, int unset
);
172 int sample__resolve_callchain(struct perf_sample
*sample
, struct symbol
**parent
,
173 struct perf_evsel
*evsel
, struct addr_location
*al
,
175 int hist_entry__append_callchain(struct hist_entry
*he
, struct perf_sample
*sample
);
176 int fill_callchain_info(struct addr_location
*al
, struct callchain_cursor_node
*node
,
177 bool hide_unresolved
);
179 extern const char record_callchain_help
[];
180 extern int parse_callchain_record(const char *arg
, struct callchain_param
*param
);
181 int parse_callchain_record_opt(const char *arg
, struct callchain_param
*param
);
182 int parse_callchain_report_opt(const char *arg
);
183 int perf_callchain_config(const char *var
, const char *value
);
185 static inline void callchain_cursor_snapshot(struct callchain_cursor
*dest
,
186 struct callchain_cursor
*src
)
190 dest
->first
= src
->curr
;
191 dest
->nr
-= src
->pos
;
194 #ifdef HAVE_SKIP_CALLCHAIN_IDX
195 extern int arch_skip_callchain_idx(struct thread
*thread
, struct ip_callchain
*chain
);
197 static inline int arch_skip_callchain_idx(struct thread
*thread __maybe_unused
,
198 struct ip_callchain
*chain __maybe_unused
)
204 char *callchain_list__sym_name(struct callchain_list
*cl
,
205 char *bf
, size_t bfsize
, bool show_dso
);
207 void free_callchain(struct callchain_root
*root
);
209 #endif /* __PERF_CALLCHAIN_H */