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8cb76d99 FW |
1 | #ifndef __PERF_CALLCHAIN_H |
2 | #define __PERF_CALLCHAIN_H | |
3 | ||
4 | #include "../perf.h" | |
5da50258 | 5 | #include <linux/list.h> |
43cbcd8a | 6 | #include <linux/rbtree.h> |
139633c6 | 7 | #include "event.h" |
4424961a | 8 | #include "symbol.h" |
8cb76d99 | 9 | |
76a26549 NK |
10 | #define HELP_PAD "\t\t\t\t" |
11 | ||
12 | #define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace):\n\n" | |
21cf6284 NK |
13 | |
14 | #ifdef HAVE_DWARF_UNWIND_SUPPORT | |
76a26549 | 15 | # define RECORD_MODE_HELP HELP_PAD "record_mode:\tcall graph recording mode (fp|dwarf|lbr)\n" |
21cf6284 | 16 | #else |
76a26549 | 17 | # define RECORD_MODE_HELP HELP_PAD "record_mode:\tcall graph recording mode (fp|lbr)\n" |
21cf6284 NK |
18 | #endif |
19 | ||
76a26549 NK |
20 | #define RECORD_SIZE_HELP \ |
21 | HELP_PAD "record_size:\tif record_mode is 'dwarf', max size of stack recording (<bytes>)\n" \ | |
22 | HELP_PAD "\t\tdefault: 8192 (bytes)\n" | |
23 | ||
24 | #define CALLCHAIN_RECORD_HELP CALLCHAIN_HELP RECORD_MODE_HELP RECORD_SIZE_HELP | |
25 | ||
26 | #define CALLCHAIN_REPORT_HELP \ | |
26e77924 | 27 | HELP_PAD "print_type:\tcall graph printing style (graph|flat|fractal|folded|none)\n" \ |
76a26549 NK |
28 | HELP_PAD "threshold:\tminimum call graph inclusion threshold (<percent>)\n" \ |
29 | HELP_PAD "print_limit:\tmaximum number of call graph entry (<number>)\n" \ | |
30 | HELP_PAD "order:\t\tcall graph order (caller|callee)\n" \ | |
31 | HELP_PAD "sort_key:\tcall graph sort key (function|address)\n" \ | |
f2af0086 NK |
32 | HELP_PAD "branch:\t\tinclude last branch info to call graph (branch)\n" \ |
33 | HELP_PAD "value:\t\tcall graph value (percent|period|count)\n" | |
21cf6284 | 34 | |
2c83bc08 JO |
35 | enum perf_call_graph_mode { |
36 | CALLCHAIN_NONE, | |
37 | CALLCHAIN_FP, | |
38 | CALLCHAIN_DWARF, | |
aad2b21c | 39 | CALLCHAIN_LBR, |
2c83bc08 JO |
40 | CALLCHAIN_MAX |
41 | }; | |
42 | ||
4eb3e478 | 43 | enum chain_mode { |
b1a88349 | 44 | CHAIN_NONE, |
805d127d FW |
45 | CHAIN_FLAT, |
46 | CHAIN_GRAPH_ABS, | |
26e77924 NK |
47 | CHAIN_GRAPH_REL, |
48 | CHAIN_FOLDED, | |
4eb3e478 | 49 | }; |
8cb76d99 | 50 | |
d797fdc5 SL |
51 | enum chain_order { |
52 | ORDER_CALLER, | |
53 | ORDER_CALLEE | |
54 | }; | |
55 | ||
8cb76d99 FW |
56 | struct callchain_node { |
57 | struct callchain_node *parent; | |
f37a291c | 58 | struct list_head val; |
4b3a3212 | 59 | struct list_head parent_val; |
e369517c NK |
60 | struct rb_node rb_node_in; /* to insert nodes in an rbtree */ |
61 | struct rb_node rb_node; /* to sort nodes in an output tree */ | |
62 | struct rb_root rb_root_in; /* input tree of children */ | |
63 | struct rb_root rb_root; /* sorted output tree of children */ | |
f37a291c | 64 | unsigned int val_nr; |
5e47f8ff NK |
65 | unsigned int count; |
66 | unsigned int children_count; | |
f37a291c | 67 | u64 hit; |
1953287b | 68 | u64 children_hit; |
8cb76d99 FW |
69 | }; |
70 | ||
d2009c51 FW |
71 | struct callchain_root { |
72 | u64 max_depth; | |
73 | struct callchain_node node; | |
74 | }; | |
75 | ||
805d127d FW |
76 | struct callchain_param; |
77 | ||
d2009c51 | 78 | typedef void (*sort_chain_func_t)(struct rb_root *, struct callchain_root *, |
805d127d FW |
79 | u64, struct callchain_param *); |
80 | ||
99571ab3 AK |
81 | enum chain_key { |
82 | CCKEY_FUNCTION, | |
83 | CCKEY_ADDRESS | |
84 | }; | |
85 | ||
f2af0086 NK |
86 | enum chain_value { |
87 | CCVAL_PERCENT, | |
88 | CCVAL_PERIOD, | |
89 | CCVAL_COUNT, | |
90 | }; | |
91 | ||
805d127d | 92 | struct callchain_param { |
72a128aa NK |
93 | bool enabled; |
94 | enum perf_call_graph_mode record_mode; | |
95 | u32 dump_size; | |
805d127d | 96 | enum chain_mode mode; |
232a5c94 | 97 | u32 print_limit; |
805d127d FW |
98 | double min_percent; |
99 | sort_chain_func_t sort; | |
d797fdc5 | 100 | enum chain_order order; |
792aeafa | 101 | bool order_set; |
99571ab3 | 102 | enum chain_key key; |
8b7bad58 | 103 | bool branch_callstack; |
f2af0086 | 104 | enum chain_value value; |
805d127d FW |
105 | }; |
106 | ||
8f651eae ACM |
107 | extern struct callchain_param callchain_param; |
108 | ||
8cb76d99 | 109 | struct callchain_list { |
f37a291c | 110 | u64 ip; |
b3c9ac08 | 111 | struct map_symbol ms; |
3698dab1 NK |
112 | struct /* for TUI */ { |
113 | bool unfolded; | |
114 | bool has_children; | |
115 | }; | |
23f0981b | 116 | char *srcline; |
8cb76d99 FW |
117 | struct list_head list; |
118 | }; | |
119 | ||
1b3a0e95 FW |
120 | /* |
121 | * A callchain cursor is a single linked list that | |
122 | * let one feed a callchain progressively. | |
3fd44cd4 | 123 | * It keeps persistent allocated entries to minimize |
1b3a0e95 FW |
124 | * allocations. |
125 | */ | |
126 | struct callchain_cursor_node { | |
127 | u64 ip; | |
128 | struct map *map; | |
129 | struct symbol *sym; | |
130 | struct callchain_cursor_node *next; | |
131 | }; | |
132 | ||
133 | struct callchain_cursor { | |
134 | u64 nr; | |
135 | struct callchain_cursor_node *first; | |
136 | struct callchain_cursor_node **last; | |
137 | u64 pos; | |
138 | struct callchain_cursor_node *curr; | |
139 | }; | |
140 | ||
47260645 NK |
141 | extern __thread struct callchain_cursor callchain_cursor; |
142 | ||
d2009c51 | 143 | static inline void callchain_init(struct callchain_root *root) |
8cb76d99 | 144 | { |
d2009c51 | 145 | INIT_LIST_HEAD(&root->node.val); |
646a6e84 | 146 | INIT_LIST_HEAD(&root->node.parent_val); |
97aa1052 | 147 | |
d2009c51 FW |
148 | root->node.parent = NULL; |
149 | root->node.hit = 0; | |
98ee74a7 | 150 | root->node.children_hit = 0; |
e369517c | 151 | root->node.rb_root_in = RB_ROOT; |
d2009c51 | 152 | root->max_depth = 0; |
8cb76d99 FW |
153 | } |
154 | ||
f08c3154 | 155 | static inline u64 callchain_cumul_hits(struct callchain_node *node) |
1953287b FW |
156 | { |
157 | return node->hit + node->children_hit; | |
158 | } | |
159 | ||
5e47f8ff NK |
160 | static inline unsigned callchain_cumul_counts(struct callchain_node *node) |
161 | { | |
162 | return node->count + node->children_count; | |
163 | } | |
164 | ||
16537f13 | 165 | int callchain_register_param(struct callchain_param *param); |
1b3a0e95 FW |
166 | int callchain_append(struct callchain_root *root, |
167 | struct callchain_cursor *cursor, | |
168 | u64 period); | |
169 | ||
170 | int callchain_merge(struct callchain_cursor *cursor, | |
171 | struct callchain_root *dst, struct callchain_root *src); | |
139633c6 | 172 | |
1b3a0e95 FW |
173 | /* |
174 | * Initialize a cursor before adding entries inside, but keep | |
175 | * the previously allocated entries as a cache. | |
176 | */ | |
177 | static inline void callchain_cursor_reset(struct callchain_cursor *cursor) | |
178 | { | |
179 | cursor->nr = 0; | |
180 | cursor->last = &cursor->first; | |
181 | } | |
182 | ||
183 | int callchain_cursor_append(struct callchain_cursor *cursor, u64 ip, | |
184 | struct map *map, struct symbol *sym); | |
185 | ||
186 | /* Close a cursor writing session. Initialize for the reader */ | |
187 | static inline void callchain_cursor_commit(struct callchain_cursor *cursor) | |
188 | { | |
189 | cursor->curr = cursor->first; | |
190 | cursor->pos = 0; | |
191 | } | |
192 | ||
193 | /* Cursor reading iteration helpers */ | |
194 | static inline struct callchain_cursor_node * | |
195 | callchain_cursor_current(struct callchain_cursor *cursor) | |
196 | { | |
197 | if (cursor->pos == cursor->nr) | |
198 | return NULL; | |
199 | ||
200 | return cursor->curr; | |
201 | } | |
202 | ||
203 | static inline void callchain_cursor_advance(struct callchain_cursor *cursor) | |
204 | { | |
205 | cursor->curr = cursor->curr->next; | |
206 | cursor->pos++; | |
207 | } | |
75d9a108 ACM |
208 | |
209 | struct option; | |
2dc9fb1a | 210 | struct hist_entry; |
75d9a108 ACM |
211 | |
212 | int record_parse_callchain_opt(const struct option *opt, const char *arg, int unset); | |
09b0fd45 JO |
213 | int record_callchain_opt(const struct option *opt, const char *arg, int unset); |
214 | ||
91d7b2de ACM |
215 | int sample__resolve_callchain(struct perf_sample *sample, |
216 | struct callchain_cursor *cursor, struct symbol **parent, | |
2dc9fb1a NK |
217 | struct perf_evsel *evsel, struct addr_location *al, |
218 | int max_stack); | |
219 | int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *sample); | |
c7405d85 NK |
220 | int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node *node, |
221 | bool hide_unresolved); | |
2dc9fb1a | 222 | |
75d9a108 | 223 | extern const char record_callchain_help[]; |
3938bad4 | 224 | int parse_callchain_record(const char *arg, struct callchain_param *param); |
c3a6a8c4 | 225 | int parse_callchain_record_opt(const char *arg, struct callchain_param *param); |
cff6bb46 | 226 | int parse_callchain_report_opt(const char *arg); |
a2c10d39 | 227 | int parse_callchain_top_opt(const char *arg); |
2b9240ca | 228 | int perf_callchain_config(const char *var, const char *value); |
be1f13e3 NK |
229 | |
230 | static inline void callchain_cursor_snapshot(struct callchain_cursor *dest, | |
231 | struct callchain_cursor *src) | |
232 | { | |
233 | *dest = *src; | |
234 | ||
235 | dest->first = src->curr; | |
236 | dest->nr -= src->pos; | |
237 | } | |
a60335ba SB |
238 | |
239 | #ifdef HAVE_SKIP_CALLCHAIN_IDX | |
3938bad4 | 240 | int arch_skip_callchain_idx(struct thread *thread, struct ip_callchain *chain); |
a60335ba | 241 | #else |
bb871a9c | 242 | static inline int arch_skip_callchain_idx(struct thread *thread __maybe_unused, |
a60335ba SB |
243 | struct ip_callchain *chain __maybe_unused) |
244 | { | |
245 | return -1; | |
246 | } | |
247 | #endif | |
248 | ||
2989ccaa AK |
249 | char *callchain_list__sym_name(struct callchain_list *cl, |
250 | char *bf, size_t bfsize, bool show_dso); | |
5ab250ca NK |
251 | char *callchain_node__scnprintf_value(struct callchain_node *node, |
252 | char *bf, size_t bfsize, u64 total); | |
253 | int callchain_node__fprintf_value(struct callchain_node *node, | |
254 | FILE *fp, u64 total); | |
2989ccaa | 255 | |
d114960c | 256 | void free_callchain(struct callchain_root *root); |
42b276a2 | 257 | void decay_callchain(struct callchain_root *root); |
4b3a3212 | 258 | int callchain_node__make_parent_list(struct callchain_node *node); |
d114960c | 259 | |
8b40f521 | 260 | #endif /* __PERF_CALLCHAIN_H */ |