1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_ANNOTATE_H
3 #define __PERF_ANNOTATE_H
4
5 #include <stdbool.h>
6 #include <stdint.h>
7 #include <stdio.h>
8 #include <linux/types.h>
9 #include <linux/list.h>
10 #include <linux/rbtree.h>
11 #include <asm/bug.h>
12 #include "symbol_conf.h"
13 #include "mutex.h"
14 #include "spark.h"
15
16 struct hist_browser_timer;
17 struct hist_entry;
18 struct ins_ops;
19 struct map;
20 struct map_symbol;
21 struct addr_map_symbol;
22 struct option;
23 struct perf_sample;
24 struct evsel;
25 struct symbol;
26
27 struct ins {
28 const char *name;
29 struct ins_ops *ops;
30 };
31
32 struct ins_operands {
33 char *raw;
34 char *raw_comment;
35 char *raw_func_start;
36 struct {
37 char *raw;
38 char *name;
39 struct symbol *sym;
40 u64 addr;
41 s64 offset;
42 bool offset_avail;
43 bool outside;
44 } target;
45 union {
46 struct {
47 char *raw;
48 char *name;
49 u64 addr;
50 } source;
51 struct {
52 struct ins ins;
53 struct ins_operands *ops;
54 } locked;
55 };
56 };
57
58 struct arch;
59
60 struct ins_ops {
61 void (*free)(struct ins_operands *ops);
62 int (*parse)(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms);
63 int (*scnprintf)(struct ins *ins, char *bf, size_t size,
64 struct ins_operands *ops, int max_ins_name);
65 };
66
67 bool ins__is_jump(const struct ins *ins);
68 bool ins__is_call(const struct ins *ins);
69 bool ins__is_ret(const struct ins *ins);
70 bool ins__is_lock(const struct ins *ins);
71 int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops, int max_ins_name);
72 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);
73
74 #define ANNOTATION__IPC_WIDTH 6
75 #define ANNOTATION__CYCLES_WIDTH 6
76 #define ANNOTATION__MINMAX_CYCLES_WIDTH 19
77 #define ANNOTATION__AVG_IPC_WIDTH 36
78 #define ANNOTATION_DUMMY_LEN 256
79
80 struct annotation_options {
81 bool hide_src_code,
82 use_offset,
83 jump_arrows,
84 print_lines,
85 full_path,
86 show_linenr,
87 show_fileloc,
88 show_nr_jumps,
89 show_minmax_cycle,
90 show_asm_raw,
91 annotate_src,
92 full_addr;
93 u8 offset_level;
94 int min_pcnt;
95 int max_lines;
96 int context;
97 const char *objdump_path;
98 const char *disassembler_style;
99 const char *prefix;
100 const char *prefix_strip;
101 unsigned int percent_type;
102 };
103
104 enum {
105 ANNOTATION__OFFSET_JUMP_TARGETS = 1,
106 ANNOTATION__OFFSET_CALL,
107 ANNOTATION__MAX_OFFSET_LEVEL,
108 };
109
110 #define ANNOTATION__MIN_OFFSET_LEVEL ANNOTATION__OFFSET_JUMP_TARGETS
111
112 extern struct annotation_options annotation__default_options;
113
114 struct annotation;
115
116 struct sym_hist_entry {
117 u64 nr_samples;
118 u64 period;
119 };
120
121 enum {
122 PERCENT_HITS_LOCAL,
123 PERCENT_HITS_GLOBAL,
124 PERCENT_PERIOD_LOCAL,
125 PERCENT_PERIOD_GLOBAL,
126 PERCENT_MAX,
127 };
128
129 struct annotation_data {
130 double percent[PERCENT_MAX];
131 double percent_sum;
132 struct sym_hist_entry he;
133 };
134
135 struct annotation_line {
136 struct list_head node;
137 struct rb_node rb_node;
138 s64 offset;
139 char *line;
140 int line_nr;
141 char *fileloc;
142 int jump_sources;
143 float ipc;
144 u64 cycles;
145 u64 cycles_max;
146 u64 cycles_min;
147 char *path;
148 u32 idx;
149 int idx_asm;
150 int data_nr;
151 struct annotation_data data[];
152 };
153
154 struct disasm_line {
155 struct ins ins;
156 struct ins_operands ops;
157
158 /* This needs to be at the end. */
159 struct annotation_line al;
160 };
161
annotation_data__percent(struct annotation_data * data,unsigned int which)162 static inline double annotation_data__percent(struct annotation_data *data,
163 unsigned int which)
164 {
165 return which < PERCENT_MAX ? data->percent[which] : -1;
166 }
167
percent_type_str(unsigned int type)168 static inline const char *percent_type_str(unsigned int type)
169 {
170 static const char *str[PERCENT_MAX] = {
171 "local hits",
172 "global hits",
173 "local period",
174 "global period",
175 };
176
177 if (WARN_ON(type >= PERCENT_MAX))
178 return "N/A";
179
180 return str[type];
181 }
182
disasm_line(struct annotation_line * al)183 static inline struct disasm_line *disasm_line(struct annotation_line *al)
184 {
185 return al ? container_of(al, struct disasm_line, al) : NULL;
186 }
187
188 /*
189 * Is this offset in the same function as the line it is used?
190 * asm functions jump to other functions, for instance.
191 */
disasm_line__has_local_offset(const struct disasm_line * dl)192 static inline bool disasm_line__has_local_offset(const struct disasm_line *dl)
193 {
194 return dl->ops.target.offset_avail && !dl->ops.target.outside;
195 }
196
197 /*
198 * Can we draw an arrow from the jump to its target, for instance? I.e.
199 * is the jump and its target in the same function?
200 */
201 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym);
202
203 void disasm_line__free(struct disasm_line *dl);
204 struct annotation_line *
205 annotation_line__next(struct annotation_line *pos, struct list_head *head);
206
207 struct annotation_write_ops {
208 bool first_line, current_entry, change_color;
209 int width;
210 void *obj;
211 int (*set_color)(void *obj, int color);
212 void (*set_percent_color)(void *obj, double percent, bool current);
213 int (*set_jumps_percent_color)(void *obj, int nr, bool current);
214 void (*printf)(void *obj, const char *fmt, ...);
215 void (*write_graph)(void *obj, int graph);
216 };
217
218 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
219 struct annotation_write_ops *ops,
220 struct annotation_options *opts);
221
222 int __annotation__scnprintf_samples_period(struct annotation *notes,
223 char *bf, size_t size,
224 struct evsel *evsel,
225 bool show_freq);
226
227 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name);
228 size_t disasm__fprintf(struct list_head *head, FILE *fp);
229 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel);
230
231 struct sym_hist {
232 u64 nr_samples;
233 u64 period;
234 struct sym_hist_entry addr[];
235 };
236
237 struct cyc_hist {
238 u64 start;
239 u64 cycles;
240 u64 cycles_aggr;
241 u64 cycles_max;
242 u64 cycles_min;
243 s64 cycles_spark[NUM_SPARKS];
244 u32 num;
245 u32 num_aggr;
246 u8 have_start;
247 /* 1 byte padding */
248 u16 reset;
249 };
250
251 /** struct annotated_source - symbols with hits have this attached as in sannotation
252 *
253 * @histograms: Array of addr hit histograms per event being monitored
254 * nr_histograms: This may not be the same as evsel->evlist->core.nr_entries if
255 * we have more than a group in a evlist, where we will want
256 * to see each group separately, that is why symbol__annotate2()
257 * sets src->nr_histograms to evsel->nr_members.
258 * @lines: If 'print_lines' is specified, per source code line percentages
259 * @source: source parsed from a disassembler like objdump -dS
260 * @cyc_hist: Average cycles per basic block
261 *
262 * lines is allocated, percentages calculated and all sorted by percentage
263 * when the annotation is about to be presented, so the percentages are for
264 * one of the entries in the histogram array, i.e. for the event/counter being
265 * presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
266 * returns.
267 */
268 struct annotated_source {
269 struct list_head source;
270 int nr_histograms;
271 size_t sizeof_sym_hist;
272 struct cyc_hist *cycles_hist;
273 struct sym_hist *histograms;
274 };
275
276 struct annotation {
277 struct mutex lock;
278 u64 max_coverage;
279 u64 start;
280 u64 hit_cycles;
281 u64 hit_insn;
282 unsigned int total_insn;
283 unsigned int cover_insn;
284 struct annotation_options *options;
285 struct annotation_line **offsets;
286 int nr_events;
287 int max_jump_sources;
288 int nr_entries;
289 int nr_asm_entries;
290 u16 max_line_len;
291 struct {
292 u8 addr;
293 u8 jumps;
294 u8 target;
295 u8 min_addr;
296 u8 max_addr;
297 u8 max_ins_name;
298 } widths;
299 bool have_cycles;
300 struct annotated_source *src;
301 };
302
303 void annotation__init(struct annotation *notes);
304 void annotation__exit(struct annotation *notes);
305
annotation__cycles_width(struct annotation * notes)306 static inline int annotation__cycles_width(struct annotation *notes)
307 {
308 if (notes->have_cycles && notes->options->show_minmax_cycle)
309 return ANNOTATION__IPC_WIDTH + ANNOTATION__MINMAX_CYCLES_WIDTH;
310
311 return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0;
312 }
313
annotation__pcnt_width(struct annotation * notes)314 static inline int annotation__pcnt_width(struct annotation *notes)
315 {
316 return (symbol_conf.show_total_period ? 12 : 7) * notes->nr_events;
317 }
318
annotation_line__filter(struct annotation_line * al,struct annotation * notes)319 static inline bool annotation_line__filter(struct annotation_line *al, struct annotation *notes)
320 {
321 return notes->options->hide_src_code && al->offset == -1;
322 }
323
324 void annotation__set_offsets(struct annotation *notes, s64 size);
325 void annotation__compute_ipc(struct annotation *notes, size_t size);
326 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym);
327 void annotation__update_column_widths(struct annotation *notes);
328 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym);
329 void annotation__toggle_full_addr(struct annotation *notes, struct map_symbol *ms);
330
annotated_source__histogram(struct annotated_source * src,int idx)331 static inline struct sym_hist *annotated_source__histogram(struct annotated_source *src, int idx)
332 {
333 return ((void *)src->histograms) + (src->sizeof_sym_hist * idx);
334 }
335
annotation__histogram(struct annotation * notes,int idx)336 static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
337 {
338 return annotated_source__histogram(notes->src, idx);
339 }
340
symbol__annotation(struct symbol * sym)341 static inline struct annotation *symbol__annotation(struct symbol *sym)
342 {
343 return (void *)sym - symbol_conf.priv_size;
344 }
345
346 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
347 struct evsel *evsel);
348
349 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
350 struct addr_map_symbol *start,
351 unsigned cycles);
352
353 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
354 struct evsel *evsel, u64 addr);
355
356 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists);
357 void symbol__annotate_zero_histograms(struct symbol *sym);
358
359 int symbol__annotate(struct map_symbol *ms,
360 struct evsel *evsel,
361 struct annotation_options *options,
362 struct arch **parch);
363 int symbol__annotate2(struct map_symbol *ms,
364 struct evsel *evsel,
365 struct annotation_options *options,
366 struct arch **parch);
367
368 enum symbol_disassemble_errno {
369 SYMBOL_ANNOTATE_ERRNO__SUCCESS = 0,
370
371 /*
372 * Choose an arbitrary negative big number not to clash with standard
373 * errno since SUS requires the errno has distinct positive values.
374 * See 'Issue 6' in the link below.
375 *
376 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
377 */
378 __SYMBOL_ANNOTATE_ERRNO__START = -10000,
379
380 SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX = __SYMBOL_ANNOTATE_ERRNO__START,
381 SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF,
382 SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING,
383 SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP,
384 SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE,
385 SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF,
386
387 __SYMBOL_ANNOTATE_ERRNO__END,
388 };
389
390 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen);
391
392 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel,
393 struct annotation_options *options);
394 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
395 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
396 void annotated_source__purge(struct annotated_source *as);
397
398 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel,
399 struct annotation_options *opts);
400
401 bool ui__has_annotation(void);
402
403 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel, struct annotation_options *opts);
404
405 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel, struct annotation_options *opts);
406
407 #ifdef HAVE_SLANG_SUPPORT
408 int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
409 struct hist_browser_timer *hbt,
410 struct annotation_options *opts);
411 #else
symbol__tui_annotate(struct map_symbol * ms __maybe_unused,struct evsel * evsel __maybe_unused,struct hist_browser_timer * hbt __maybe_unused,struct annotation_options * opts __maybe_unused)412 static inline int symbol__tui_annotate(struct map_symbol *ms __maybe_unused,
413 struct evsel *evsel __maybe_unused,
414 struct hist_browser_timer *hbt __maybe_unused,
415 struct annotation_options *opts __maybe_unused)
416 {
417 return 0;
418 }
419 #endif
420
421 void annotation_config__init(struct annotation_options *opt);
422
423 int annotate_parse_percent_type(const struct option *opt, const char *_str,
424 int unset);
425
426 int annotate_check_args(struct annotation_options *args);
427
428 #endif /* __PERF_ANNOTATE_H */
429