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 #include "hashmap.h" 16 17 struct hist_browser_timer; 18 struct hist_entry; 19 struct ins_ops; 20 struct map; 21 struct map_symbol; 22 struct addr_map_symbol; 23 struct option; 24 struct perf_sample; 25 struct evsel; 26 struct symbol; 27 struct annotated_data_type; 28 29 struct ins { 30 const char *name; 31 struct ins_ops *ops; 32 }; 33 34 struct ins_operands { 35 char *raw; 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 bool multi_regs; 45 } target; 46 union { 47 struct { 48 char *raw; 49 char *name; 50 u64 addr; 51 bool multi_regs; 52 } source; 53 struct { 54 struct ins ins; 55 struct ins_operands *ops; 56 } locked; 57 struct { 58 char *raw_comment; 59 char *raw_func_start; 60 } jump; 61 }; 62 }; 63 64 struct arch; 65 66 bool arch__is(struct arch *arch, const char *name); 67 68 struct ins_ops { 69 void (*free)(struct ins_operands *ops); 70 int (*parse)(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms); 71 int (*scnprintf)(struct ins *ins, char *bf, size_t size, 72 struct ins_operands *ops, int max_ins_name); 73 }; 74 75 bool ins__is_jump(const struct ins *ins); 76 bool ins__is_call(const struct ins *ins); 77 bool ins__is_ret(const struct ins *ins); 78 bool ins__is_lock(const struct ins *ins); 79 int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops, int max_ins_name); 80 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2); 81 82 #define ANNOTATION__IPC_WIDTH 6 83 #define ANNOTATION__CYCLES_WIDTH 6 84 #define ANNOTATION__MINMAX_CYCLES_WIDTH 19 85 #define ANNOTATION__AVG_IPC_WIDTH 36 86 #define ANNOTATION_DUMMY_LEN 256 87 88 struct annotation_options { 89 bool hide_src_code, 90 use_offset, 91 jump_arrows, 92 print_lines, 93 full_path, 94 show_linenr, 95 show_fileloc, 96 show_nr_jumps, 97 show_minmax_cycle, 98 show_asm_raw, 99 annotate_src, 100 full_addr; 101 u8 offset_level; 102 int min_pcnt; 103 int max_lines; 104 int context; 105 char *objdump_path; 106 char *disassembler_style; 107 const char *prefix; 108 const char *prefix_strip; 109 unsigned int percent_type; 110 }; 111 112 extern struct annotation_options annotate_opts; 113 114 enum { 115 ANNOTATION__OFFSET_JUMP_TARGETS = 1, 116 ANNOTATION__OFFSET_CALL, 117 ANNOTATION__MAX_OFFSET_LEVEL, 118 }; 119 120 #define ANNOTATION__MIN_OFFSET_LEVEL ANNOTATION__OFFSET_JUMP_TARGETS 121 122 struct annotation; 123 124 struct sym_hist_entry { 125 u64 nr_samples; 126 u64 period; 127 }; 128 129 enum { 130 PERCENT_HITS_LOCAL, 131 PERCENT_HITS_GLOBAL, 132 PERCENT_PERIOD_LOCAL, 133 PERCENT_PERIOD_GLOBAL, 134 PERCENT_MAX, 135 }; 136 137 struct annotation_data { 138 double percent[PERCENT_MAX]; 139 double percent_sum; 140 struct sym_hist_entry he; 141 }; 142 143 struct cycles_info { 144 float ipc; 145 u64 avg; 146 u64 max; 147 u64 min; 148 }; 149 150 struct annotation_line { 151 struct list_head node; 152 struct rb_node rb_node; 153 s64 offset; 154 char *line; 155 int line_nr; 156 char *fileloc; 157 char *path; 158 struct cycles_info *cycles; 159 int jump_sources; 160 u32 idx; 161 int idx_asm; 162 int data_nr; 163 struct annotation_data data[]; 164 }; 165 166 struct disasm_line { 167 struct ins ins; 168 struct ins_operands ops; 169 170 /* This needs to be at the end. */ 171 struct annotation_line al; 172 }; 173 174 static inline double annotation_data__percent(struct annotation_data *data, 175 unsigned int which) 176 { 177 return which < PERCENT_MAX ? data->percent[which] : -1; 178 } 179 180 static inline const char *percent_type_str(unsigned int type) 181 { 182 static const char *str[PERCENT_MAX] = { 183 "local hits", 184 "global hits", 185 "local period", 186 "global period", 187 }; 188 189 if (WARN_ON(type >= PERCENT_MAX)) 190 return "N/A"; 191 192 return str[type]; 193 } 194 195 static inline struct disasm_line *disasm_line(struct annotation_line *al) 196 { 197 return al ? container_of(al, struct disasm_line, al) : NULL; 198 } 199 200 /* 201 * Is this offset in the same function as the line it is used? 202 * asm functions jump to other functions, for instance. 203 */ 204 static inline bool disasm_line__has_local_offset(const struct disasm_line *dl) 205 { 206 return dl->ops.target.offset_avail && !dl->ops.target.outside; 207 } 208 209 /* 210 * Can we draw an arrow from the jump to its target, for instance? I.e. 211 * is the jump and its target in the same function? 212 */ 213 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym); 214 215 void disasm_line__free(struct disasm_line *dl); 216 struct annotation_line * 217 annotation_line__next(struct annotation_line *pos, struct list_head *head); 218 219 struct annotation_write_ops { 220 bool first_line, current_entry, change_color; 221 int width; 222 void *obj; 223 int (*set_color)(void *obj, int color); 224 void (*set_percent_color)(void *obj, double percent, bool current); 225 int (*set_jumps_percent_color)(void *obj, int nr, bool current); 226 void (*printf)(void *obj, const char *fmt, ...); 227 void (*write_graph)(void *obj, int graph); 228 }; 229 230 void annotation_line__write(struct annotation_line *al, struct annotation *notes, 231 struct annotation_write_ops *ops); 232 233 int __annotation__scnprintf_samples_period(struct annotation *notes, 234 char *bf, size_t size, 235 struct evsel *evsel, 236 bool show_freq); 237 238 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name); 239 size_t disasm__fprintf(struct list_head *head, FILE *fp); 240 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel); 241 242 /** 243 * struct sym_hist - symbol histogram information for an event 244 * 245 * @nr_samples: Total number of samples. 246 * @period: Sum of sample periods. 247 */ 248 struct sym_hist { 249 u64 nr_samples; 250 u64 period; 251 }; 252 253 /** 254 * struct cyc_hist - (CPU) cycle histogram for a basic block 255 * 256 * @start: Start address of current block (if known). 257 * @cycles: Sum of cycles for the longest basic block. 258 * @cycles_aggr: Total cycles for this address. 259 * @cycles_max: Max cycles for this address. 260 * @cycles_min: Min cycles for this address. 261 * @cycles_spark: History of cycles for the longest basic block. 262 * @num: Number of samples for the longest basic block. 263 * @num_aggr: Total number of samples for this address. 264 * @have_start: Whether the current branch info has a start address. 265 * @reset: Number of resets due to a different start address. 266 * 267 * If sample has branch_stack and cycles info, it can construct basic blocks 268 * between two adjacent branches. It'd have start and end addresses but 269 * sometimes the start address may not be available. So the cycles are 270 * accounted at the end address. If multiple basic blocks end at the same 271 * address, it will take the longest one. 272 * 273 * The @start, @cycles, @cycles_spark and @num fields are used for the longest 274 * block only. Other fields are used for all cases. 275 * 276 * See __symbol__account_cycles(). 277 */ 278 struct cyc_hist { 279 u64 start; 280 u64 cycles; 281 u64 cycles_aggr; 282 u64 cycles_max; 283 u64 cycles_min; 284 s64 cycles_spark[NUM_SPARKS]; 285 u32 num; 286 u32 num_aggr; 287 u8 have_start; 288 /* 1 byte padding */ 289 u16 reset; 290 }; 291 292 /** 293 * struct annotated_source - symbols with hits have this attached as in annotation 294 * 295 * @source: List head for annotated_line (embeded in disasm_line). 296 * @histograms: Array of symbol histograms per event to maintain the total number 297 * of samples and period. 298 * @nr_histograms: This may not be the same as evsel->evlist->core.nr_entries if 299 * we have more than a group in a evlist, where we will want 300 * to see each group separately, that is why symbol__annotate2() 301 * sets src->nr_histograms to evsel->nr_members. 302 * @offsets: Array of annotation_line to be accessed by offset. 303 * @samples: Hash map of sym_hist_entry. Keyed by event index and offset in symbol. 304 * @nr_entries: Number of annotated_line in the source list. 305 * @nr_asm_entries: Number of annotated_line with actual asm instruction in the 306 * source list. 307 * @max_line_len: Maximum length of objdump output in an annotated_line. 308 * 309 * disasm_lines are allocated, percentages calculated and all sorted by percentage 310 * when the annotation is about to be presented, so the percentages are for 311 * one of the entries in the histogram array, i.e. for the event/counter being 312 * presented. It is deallocated right after symbol__{tui,tty,etc}_annotate 313 * returns. 314 */ 315 struct annotated_source { 316 struct list_head source; 317 struct sym_hist *histograms; 318 struct annotation_line **offsets; 319 struct hashmap *samples; 320 int nr_histograms; 321 int nr_entries; 322 int nr_asm_entries; 323 u16 max_line_len; 324 }; 325 326 /** 327 * struct annotated_branch - basic block and IPC information for a symbol. 328 * 329 * @hit_cycles: Total executed cycles. 330 * @hit_insn: Total number of instructions executed. 331 * @total_insn: Number of instructions in the function. 332 * @cover_insn: Number of distinct, actually executed instructions. 333 * @cycles_hist: Array of cyc_hist for each instruction. 334 * @max_coverage: Maximum number of covered basic block (used for block-range). 335 * 336 * This struct is used by two different codes when the sample has branch stack 337 * and cycles information. annotation__compute_ipc() calculates average IPC 338 * using @hit_insn / @hit_cycles. The actual coverage can be calculated using 339 * @cover_insn / @total_insn. The @cycles_hist can give IPC for each (longest) 340 * basic block ends at the given address. 341 * process_basic_block() calculates coverage of instructions (or basic blocks) 342 * in the function. 343 */ 344 struct annotated_branch { 345 u64 hit_cycles; 346 u64 hit_insn; 347 unsigned int total_insn; 348 unsigned int cover_insn; 349 struct cyc_hist *cycles_hist; 350 u64 max_coverage; 351 }; 352 353 struct LOCKABLE annotation { 354 u64 start; 355 int nr_events; 356 int max_jump_sources; 357 struct { 358 u8 addr; 359 u8 jumps; 360 u8 target; 361 u8 min_addr; 362 u8 max_addr; 363 u8 max_ins_name; 364 } widths; 365 struct annotated_source *src; 366 struct annotated_branch *branch; 367 }; 368 369 static inline void annotation__init(struct annotation *notes __maybe_unused) 370 { 371 } 372 void annotation__exit(struct annotation *notes); 373 374 void annotation__lock(struct annotation *notes) EXCLUSIVE_LOCK_FUNCTION(*notes); 375 void annotation__unlock(struct annotation *notes) UNLOCK_FUNCTION(*notes); 376 bool annotation__trylock(struct annotation *notes) EXCLUSIVE_TRYLOCK_FUNCTION(true, *notes); 377 378 static inline int annotation__cycles_width(struct annotation *notes) 379 { 380 if (notes->branch && annotate_opts.show_minmax_cycle) 381 return ANNOTATION__IPC_WIDTH + ANNOTATION__MINMAX_CYCLES_WIDTH; 382 383 return notes->branch ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0; 384 } 385 386 static inline int annotation__pcnt_width(struct annotation *notes) 387 { 388 return (symbol_conf.show_total_period ? 12 : 7) * notes->nr_events; 389 } 390 391 static inline bool annotation_line__filter(struct annotation_line *al) 392 { 393 return annotate_opts.hide_src_code && al->offset == -1; 394 } 395 396 void annotation__set_offsets(struct annotation *notes, s64 size); 397 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym); 398 void annotation__update_column_widths(struct annotation *notes); 399 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym); 400 void annotation__toggle_full_addr(struct annotation *notes, struct map_symbol *ms); 401 402 static inline struct sym_hist *annotated_source__histogram(struct annotated_source *src, int idx) 403 { 404 return &src->histograms[idx]; 405 } 406 407 static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx) 408 { 409 return annotated_source__histogram(notes->src, idx); 410 } 411 412 static inline struct sym_hist_entry * 413 annotated_source__hist_entry(struct annotated_source *src, int idx, u64 offset) 414 { 415 struct sym_hist_entry *entry; 416 long key = offset << 16 | idx; 417 418 if (!hashmap__find(src->samples, key, &entry)) 419 return NULL; 420 return entry; 421 } 422 423 static inline struct annotation *symbol__annotation(struct symbol *sym) 424 { 425 return (void *)sym - symbol_conf.priv_size; 426 } 427 428 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample, 429 struct evsel *evsel); 430 431 struct annotated_branch *annotation__get_branch(struct annotation *notes); 432 433 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, 434 struct addr_map_symbol *start, 435 unsigned cycles); 436 437 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, 438 struct evsel *evsel, u64 addr); 439 440 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists); 441 void symbol__annotate_zero_histograms(struct symbol *sym); 442 443 int symbol__annotate(struct map_symbol *ms, 444 struct evsel *evsel, 445 struct arch **parch); 446 int symbol__annotate2(struct map_symbol *ms, 447 struct evsel *evsel, 448 struct arch **parch); 449 450 enum symbol_disassemble_errno { 451 SYMBOL_ANNOTATE_ERRNO__SUCCESS = 0, 452 453 /* 454 * Choose an arbitrary negative big number not to clash with standard 455 * errno since SUS requires the errno has distinct positive values. 456 * See 'Issue 6' in the link below. 457 * 458 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html 459 */ 460 __SYMBOL_ANNOTATE_ERRNO__START = -10000, 461 462 SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX = __SYMBOL_ANNOTATE_ERRNO__START, 463 SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF, 464 SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING, 465 SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP, 466 SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE, 467 SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF, 468 469 __SYMBOL_ANNOTATE_ERRNO__END, 470 }; 471 472 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen); 473 474 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel); 475 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx); 476 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx); 477 void annotated_source__purge(struct annotated_source *as); 478 479 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel); 480 481 bool ui__has_annotation(void); 482 483 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel); 484 485 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel); 486 487 #ifdef HAVE_SLANG_SUPPORT 488 int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel, 489 struct hist_browser_timer *hbt); 490 #else 491 static inline int symbol__tui_annotate(struct map_symbol *ms __maybe_unused, 492 struct evsel *evsel __maybe_unused, 493 struct hist_browser_timer *hbt __maybe_unused) 494 { 495 return 0; 496 } 497 #endif 498 499 void annotation_options__init(void); 500 void annotation_options__exit(void); 501 502 void annotation_config__init(void); 503 504 int annotate_parse_percent_type(const struct option *opt, const char *_str, 505 int unset); 506 507 int annotate_check_args(void); 508 509 /** 510 * struct annotated_op_loc - Location info of instruction operand 511 * @reg1: First register in the operand 512 * @reg2: Second register in the operand 513 * @offset: Memory access offset in the operand 514 * @mem_ref: Whether the operand accesses memory 515 * @multi_regs: Whether the second register is used 516 */ 517 struct annotated_op_loc { 518 int reg1; 519 int reg2; 520 int offset; 521 bool mem_ref; 522 bool multi_regs; 523 }; 524 525 enum annotated_insn_ops { 526 INSN_OP_SOURCE = 0, 527 INSN_OP_TARGET = 1, 528 529 INSN_OP_MAX, 530 }; 531 532 /** 533 * struct annotated_insn_loc - Location info of instruction 534 * @ops: Array of location info for source and target operands 535 */ 536 struct annotated_insn_loc { 537 struct annotated_op_loc ops[INSN_OP_MAX]; 538 }; 539 540 #define for_each_insn_op_loc(insn_loc, i, op_loc) \ 541 for (i = INSN_OP_SOURCE, op_loc = &(insn_loc)->ops[i]; \ 542 i < INSN_OP_MAX; \ 543 i++, op_loc++) 544 545 /* Get detailed location info in the instruction */ 546 int annotate_get_insn_location(struct arch *arch, struct disasm_line *dl, 547 struct annotated_insn_loc *loc); 548 549 /* Returns a data type from the sample instruction (if any) */ 550 struct annotated_data_type *hist_entry__get_data_type(struct hist_entry *he); 551 552 struct annotated_item_stat { 553 struct list_head list; 554 char *name; 555 int good; 556 int bad; 557 }; 558 extern struct list_head ann_insn_stat; 559 560 /* Calculate PC-relative address */ 561 u64 annotate_calc_pcrel(struct map_symbol *ms, u64 ip, int offset, 562 struct disasm_line *dl); 563 564 #endif /* __PERF_ANNOTATE_H */ 565