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