1 // SPDX-License-Identifier: GPL-2.0 2 #include <stdio.h> 3 #include <linux/string.h> 4 5 #include "../../util/callchain.h" 6 #include "../../util/util.h" 7 #include "../../util/hist.h" 8 #include "../../util/map.h" 9 #include "../../util/map_groups.h" 10 #include "../../util/symbol.h" 11 #include "../../util/sort.h" 12 #include "../../util/evsel.h" 13 #include "../../util/srcline.h" 14 #include "../../util/string2.h" 15 #include "../../util/thread.h" 16 #include "../../util/sane_ctype.h" 17 18 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin) 19 { 20 int i; 21 int ret = fprintf(fp, " "); 22 23 for (i = 0; i < left_margin; i++) 24 ret += fprintf(fp, " "); 25 26 return ret; 27 } 28 29 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask, 30 int left_margin) 31 { 32 int i; 33 size_t ret = callchain__fprintf_left_margin(fp, left_margin); 34 35 for (i = 0; i < depth; i++) 36 if (depth_mask & (1 << i)) 37 ret += fprintf(fp, "| "); 38 else 39 ret += fprintf(fp, " "); 40 41 ret += fprintf(fp, "\n"); 42 43 return ret; 44 } 45 46 static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_node *node, 47 struct callchain_list *chain, 48 int depth, int depth_mask, int period, 49 u64 total_samples, int left_margin) 50 { 51 int i; 52 size_t ret = 0; 53 char bf[1024], *alloc_str = NULL; 54 char buf[64]; 55 const char *str; 56 57 ret += callchain__fprintf_left_margin(fp, left_margin); 58 for (i = 0; i < depth; i++) { 59 if (depth_mask & (1 << i)) 60 ret += fprintf(fp, "|"); 61 else 62 ret += fprintf(fp, " "); 63 if (!period && i == depth - 1) { 64 ret += fprintf(fp, "--"); 65 ret += callchain_node__fprintf_value(node, fp, total_samples); 66 ret += fprintf(fp, "--"); 67 } else 68 ret += fprintf(fp, "%s", " "); 69 } 70 71 str = callchain_list__sym_name(chain, bf, sizeof(bf), false); 72 73 if (symbol_conf.show_branchflag_count) { 74 callchain_list_counts__printf_value(chain, NULL, 75 buf, sizeof(buf)); 76 77 if (asprintf(&alloc_str, "%s%s", str, buf) < 0) 78 str = "Not enough memory!"; 79 else 80 str = alloc_str; 81 } 82 83 fputs(str, fp); 84 fputc('\n', fp); 85 free(alloc_str); 86 87 return ret; 88 } 89 90 static struct symbol *rem_sq_bracket; 91 static struct callchain_list rem_hits; 92 93 static void init_rem_hits(void) 94 { 95 rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6); 96 if (!rem_sq_bracket) { 97 fprintf(stderr, "Not enough memory to display remaining hits\n"); 98 return; 99 } 100 101 strcpy(rem_sq_bracket->name, "[...]"); 102 rem_hits.ms.sym = rem_sq_bracket; 103 } 104 105 static size_t __callchain__fprintf_graph(FILE *fp, struct rb_root *root, 106 u64 total_samples, int depth, 107 int depth_mask, int left_margin) 108 { 109 struct rb_node *node, *next; 110 struct callchain_node *child = NULL; 111 struct callchain_list *chain; 112 int new_depth_mask = depth_mask; 113 u64 remaining; 114 size_t ret = 0; 115 int i; 116 uint entries_printed = 0; 117 int cumul_count = 0; 118 119 remaining = total_samples; 120 121 node = rb_first(root); 122 while (node) { 123 u64 new_total; 124 u64 cumul; 125 126 child = rb_entry(node, struct callchain_node, rb_node); 127 cumul = callchain_cumul_hits(child); 128 remaining -= cumul; 129 cumul_count += callchain_cumul_counts(child); 130 131 /* 132 * The depth mask manages the output of pipes that show 133 * the depth. We don't want to keep the pipes of the current 134 * level for the last child of this depth. 135 * Except if we have remaining filtered hits. They will 136 * supersede the last child 137 */ 138 next = rb_next(node); 139 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining)) 140 new_depth_mask &= ~(1 << (depth - 1)); 141 142 /* 143 * But we keep the older depth mask for the line separator 144 * to keep the level link until we reach the last child 145 */ 146 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask, 147 left_margin); 148 i = 0; 149 list_for_each_entry(chain, &child->val, list) { 150 ret += ipchain__fprintf_graph(fp, child, chain, depth, 151 new_depth_mask, i++, 152 total_samples, 153 left_margin); 154 } 155 156 if (callchain_param.mode == CHAIN_GRAPH_REL) 157 new_total = child->children_hit; 158 else 159 new_total = total_samples; 160 161 ret += __callchain__fprintf_graph(fp, &child->rb_root, new_total, 162 depth + 1, 163 new_depth_mask | (1 << depth), 164 left_margin); 165 node = next; 166 if (++entries_printed == callchain_param.print_limit) 167 break; 168 } 169 170 if (callchain_param.mode == CHAIN_GRAPH_REL && 171 remaining && remaining != total_samples) { 172 struct callchain_node rem_node = { 173 .hit = remaining, 174 }; 175 176 if (!rem_sq_bracket) 177 return ret; 178 179 if (callchain_param.value == CCVAL_COUNT && child && child->parent) { 180 rem_node.count = child->parent->children_count - cumul_count; 181 if (rem_node.count <= 0) 182 return ret; 183 } 184 185 new_depth_mask &= ~(1 << (depth - 1)); 186 ret += ipchain__fprintf_graph(fp, &rem_node, &rem_hits, depth, 187 new_depth_mask, 0, total_samples, 188 left_margin); 189 } 190 191 return ret; 192 } 193 194 /* 195 * If have one single callchain root, don't bother printing 196 * its percentage (100 % in fractal mode and the same percentage 197 * than the hist in graph mode). This also avoid one level of column. 198 * 199 * However when percent-limit applied, it's possible that single callchain 200 * node have different (non-100% in fractal mode) percentage. 201 */ 202 static bool need_percent_display(struct rb_node *node, u64 parent_samples) 203 { 204 struct callchain_node *cnode; 205 206 if (rb_next(node)) 207 return true; 208 209 cnode = rb_entry(node, struct callchain_node, rb_node); 210 return callchain_cumul_hits(cnode) != parent_samples; 211 } 212 213 static size_t callchain__fprintf_graph(FILE *fp, struct rb_root *root, 214 u64 total_samples, u64 parent_samples, 215 int left_margin) 216 { 217 struct callchain_node *cnode; 218 struct callchain_list *chain; 219 u32 entries_printed = 0; 220 bool printed = false; 221 struct rb_node *node; 222 int i = 0; 223 int ret = 0; 224 char bf[1024]; 225 226 node = rb_first(root); 227 if (node && !need_percent_display(node, parent_samples)) { 228 cnode = rb_entry(node, struct callchain_node, rb_node); 229 list_for_each_entry(chain, &cnode->val, list) { 230 /* 231 * If we sort by symbol, the first entry is the same than 232 * the symbol. No need to print it otherwise it appears as 233 * displayed twice. 234 */ 235 if (!i++ && field_order == NULL && 236 sort_order && strstarts(sort_order, "sym")) 237 continue; 238 239 if (!printed) { 240 ret += callchain__fprintf_left_margin(fp, left_margin); 241 ret += fprintf(fp, "|\n"); 242 ret += callchain__fprintf_left_margin(fp, left_margin); 243 ret += fprintf(fp, "---"); 244 left_margin += 3; 245 printed = true; 246 } else 247 ret += callchain__fprintf_left_margin(fp, left_margin); 248 249 ret += fprintf(fp, "%s", 250 callchain_list__sym_name(chain, bf, 251 sizeof(bf), 252 false)); 253 254 if (symbol_conf.show_branchflag_count) 255 ret += callchain_list_counts__printf_value( 256 chain, fp, NULL, 0); 257 ret += fprintf(fp, "\n"); 258 259 if (++entries_printed == callchain_param.print_limit) 260 break; 261 } 262 root = &cnode->rb_root; 263 } 264 265 if (callchain_param.mode == CHAIN_GRAPH_REL) 266 total_samples = parent_samples; 267 268 ret += __callchain__fprintf_graph(fp, root, total_samples, 269 1, 1, left_margin); 270 if (ret) { 271 /* do not add a blank line if it printed nothing */ 272 ret += fprintf(fp, "\n"); 273 } 274 275 return ret; 276 } 277 278 static size_t __callchain__fprintf_flat(FILE *fp, struct callchain_node *node, 279 u64 total_samples) 280 { 281 struct callchain_list *chain; 282 size_t ret = 0; 283 char bf[1024]; 284 285 if (!node) 286 return 0; 287 288 ret += __callchain__fprintf_flat(fp, node->parent, total_samples); 289 290 291 list_for_each_entry(chain, &node->val, list) { 292 if (chain->ip >= PERF_CONTEXT_MAX) 293 continue; 294 ret += fprintf(fp, " %s\n", callchain_list__sym_name(chain, 295 bf, sizeof(bf), false)); 296 } 297 298 return ret; 299 } 300 301 static size_t callchain__fprintf_flat(FILE *fp, struct rb_root *tree, 302 u64 total_samples) 303 { 304 size_t ret = 0; 305 u32 entries_printed = 0; 306 struct callchain_node *chain; 307 struct rb_node *rb_node = rb_first(tree); 308 309 while (rb_node) { 310 chain = rb_entry(rb_node, struct callchain_node, rb_node); 311 312 ret += fprintf(fp, " "); 313 ret += callchain_node__fprintf_value(chain, fp, total_samples); 314 ret += fprintf(fp, "\n"); 315 ret += __callchain__fprintf_flat(fp, chain, total_samples); 316 ret += fprintf(fp, "\n"); 317 if (++entries_printed == callchain_param.print_limit) 318 break; 319 320 rb_node = rb_next(rb_node); 321 } 322 323 return ret; 324 } 325 326 static size_t __callchain__fprintf_folded(FILE *fp, struct callchain_node *node) 327 { 328 const char *sep = symbol_conf.field_sep ?: ";"; 329 struct callchain_list *chain; 330 size_t ret = 0; 331 char bf[1024]; 332 bool first; 333 334 if (!node) 335 return 0; 336 337 ret += __callchain__fprintf_folded(fp, node->parent); 338 339 first = (ret == 0); 340 list_for_each_entry(chain, &node->val, list) { 341 if (chain->ip >= PERF_CONTEXT_MAX) 342 continue; 343 ret += fprintf(fp, "%s%s", first ? "" : sep, 344 callchain_list__sym_name(chain, 345 bf, sizeof(bf), false)); 346 first = false; 347 } 348 349 return ret; 350 } 351 352 static size_t callchain__fprintf_folded(FILE *fp, struct rb_root *tree, 353 u64 total_samples) 354 { 355 size_t ret = 0; 356 u32 entries_printed = 0; 357 struct callchain_node *chain; 358 struct rb_node *rb_node = rb_first(tree); 359 360 while (rb_node) { 361 362 chain = rb_entry(rb_node, struct callchain_node, rb_node); 363 364 ret += callchain_node__fprintf_value(chain, fp, total_samples); 365 ret += fprintf(fp, " "); 366 ret += __callchain__fprintf_folded(fp, chain); 367 ret += fprintf(fp, "\n"); 368 if (++entries_printed == callchain_param.print_limit) 369 break; 370 371 rb_node = rb_next(rb_node); 372 } 373 374 return ret; 375 } 376 377 static size_t hist_entry_callchain__fprintf(struct hist_entry *he, 378 u64 total_samples, int left_margin, 379 FILE *fp) 380 { 381 u64 parent_samples = he->stat.period; 382 383 if (symbol_conf.cumulate_callchain) 384 parent_samples = he->stat_acc->period; 385 386 switch (callchain_param.mode) { 387 case CHAIN_GRAPH_REL: 388 return callchain__fprintf_graph(fp, &he->sorted_chain, total_samples, 389 parent_samples, left_margin); 390 break; 391 case CHAIN_GRAPH_ABS: 392 return callchain__fprintf_graph(fp, &he->sorted_chain, total_samples, 393 parent_samples, left_margin); 394 break; 395 case CHAIN_FLAT: 396 return callchain__fprintf_flat(fp, &he->sorted_chain, total_samples); 397 break; 398 case CHAIN_FOLDED: 399 return callchain__fprintf_folded(fp, &he->sorted_chain, total_samples); 400 break; 401 case CHAIN_NONE: 402 break; 403 default: 404 pr_err("Bad callchain mode\n"); 405 } 406 407 return 0; 408 } 409 410 int __hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp, 411 struct perf_hpp_list *hpp_list) 412 { 413 const char *sep = symbol_conf.field_sep; 414 struct perf_hpp_fmt *fmt; 415 char *start = hpp->buf; 416 int ret; 417 bool first = true; 418 419 if (symbol_conf.exclude_other && !he->parent) 420 return 0; 421 422 perf_hpp_list__for_each_format(hpp_list, fmt) { 423 if (perf_hpp__should_skip(fmt, he->hists)) 424 continue; 425 426 /* 427 * If there's no field_sep, we still need 428 * to display initial ' '. 429 */ 430 if (!sep || !first) { 431 ret = scnprintf(hpp->buf, hpp->size, "%s", sep ?: " "); 432 advance_hpp(hpp, ret); 433 } else 434 first = false; 435 436 if (perf_hpp__use_color() && fmt->color) 437 ret = fmt->color(fmt, hpp, he); 438 else 439 ret = fmt->entry(fmt, hpp, he); 440 441 ret = hist_entry__snprintf_alignment(he, hpp, fmt, ret); 442 advance_hpp(hpp, ret); 443 } 444 445 return hpp->buf - start; 446 } 447 448 static int hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp) 449 { 450 return __hist_entry__snprintf(he, hpp, he->hists->hpp_list); 451 } 452 453 static int hist_entry__hierarchy_fprintf(struct hist_entry *he, 454 struct perf_hpp *hpp, 455 struct hists *hists, 456 FILE *fp) 457 { 458 const char *sep = symbol_conf.field_sep; 459 struct perf_hpp_fmt *fmt; 460 struct perf_hpp_list_node *fmt_node; 461 char *buf = hpp->buf; 462 size_t size = hpp->size; 463 int ret, printed = 0; 464 bool first = true; 465 466 if (symbol_conf.exclude_other && !he->parent) 467 return 0; 468 469 ret = scnprintf(hpp->buf, hpp->size, "%*s", he->depth * HIERARCHY_INDENT, ""); 470 advance_hpp(hpp, ret); 471 472 /* the first hpp_list_node is for overhead columns */ 473 fmt_node = list_first_entry(&hists->hpp_formats, 474 struct perf_hpp_list_node, list); 475 perf_hpp_list__for_each_format(&fmt_node->hpp, fmt) { 476 /* 477 * If there's no field_sep, we still need 478 * to display initial ' '. 479 */ 480 if (!sep || !first) { 481 ret = scnprintf(hpp->buf, hpp->size, "%s", sep ?: " "); 482 advance_hpp(hpp, ret); 483 } else 484 first = false; 485 486 if (perf_hpp__use_color() && fmt->color) 487 ret = fmt->color(fmt, hpp, he); 488 else 489 ret = fmt->entry(fmt, hpp, he); 490 491 ret = hist_entry__snprintf_alignment(he, hpp, fmt, ret); 492 advance_hpp(hpp, ret); 493 } 494 495 if (!sep) 496 ret = scnprintf(hpp->buf, hpp->size, "%*s", 497 (hists->nr_hpp_node - 2) * HIERARCHY_INDENT, ""); 498 advance_hpp(hpp, ret); 499 500 printed += fprintf(fp, "%s", buf); 501 502 perf_hpp_list__for_each_format(he->hpp_list, fmt) { 503 hpp->buf = buf; 504 hpp->size = size; 505 506 /* 507 * No need to call hist_entry__snprintf_alignment() since this 508 * fmt is always the last column in the hierarchy mode. 509 */ 510 if (perf_hpp__use_color() && fmt->color) 511 fmt->color(fmt, hpp, he); 512 else 513 fmt->entry(fmt, hpp, he); 514 515 /* 516 * dynamic entries are right-aligned but we want left-aligned 517 * in the hierarchy mode 518 */ 519 printed += fprintf(fp, "%s%s", sep ?: " ", ltrim(buf)); 520 } 521 printed += putc('\n', fp); 522 523 if (he->leaf && hist_entry__has_callchains(he) && symbol_conf.use_callchain) { 524 u64 total = hists__total_period(hists); 525 526 printed += hist_entry_callchain__fprintf(he, total, 0, fp); 527 goto out; 528 } 529 530 out: 531 return printed; 532 } 533 534 static int hist_entry__fprintf(struct hist_entry *he, size_t size, 535 char *bf, size_t bfsz, FILE *fp, 536 bool ignore_callchains) 537 { 538 int ret; 539 int callchain_ret = 0; 540 struct perf_hpp hpp = { 541 .buf = bf, 542 .size = size, 543 }; 544 struct hists *hists = he->hists; 545 u64 total_period = hists->stats.total_period; 546 547 if (size == 0 || size > bfsz) 548 size = hpp.size = bfsz; 549 550 if (symbol_conf.report_hierarchy) 551 return hist_entry__hierarchy_fprintf(he, &hpp, hists, fp); 552 553 hist_entry__snprintf(he, &hpp); 554 555 ret = fprintf(fp, "%s\n", bf); 556 557 if (hist_entry__has_callchains(he) && !ignore_callchains) 558 callchain_ret = hist_entry_callchain__fprintf(he, total_period, 559 0, fp); 560 561 ret += callchain_ret; 562 563 return ret; 564 } 565 566 static int print_hierarchy_indent(const char *sep, int indent, 567 const char *line, FILE *fp) 568 { 569 if (sep != NULL || indent < 2) 570 return 0; 571 572 return fprintf(fp, "%-.*s", (indent - 2) * HIERARCHY_INDENT, line); 573 } 574 575 static int hists__fprintf_hierarchy_headers(struct hists *hists, 576 struct perf_hpp *hpp, FILE *fp) 577 { 578 bool first_node, first_col; 579 int indent; 580 int depth; 581 unsigned width = 0; 582 unsigned header_width = 0; 583 struct perf_hpp_fmt *fmt; 584 struct perf_hpp_list_node *fmt_node; 585 const char *sep = symbol_conf.field_sep; 586 587 indent = hists->nr_hpp_node; 588 589 /* preserve max indent depth for column headers */ 590 print_hierarchy_indent(sep, indent, spaces, fp); 591 592 /* the first hpp_list_node is for overhead columns */ 593 fmt_node = list_first_entry(&hists->hpp_formats, 594 struct perf_hpp_list_node, list); 595 596 perf_hpp_list__for_each_format(&fmt_node->hpp, fmt) { 597 fmt->header(fmt, hpp, hists, 0, NULL); 598 fprintf(fp, "%s%s", hpp->buf, sep ?: " "); 599 } 600 601 /* combine sort headers with ' / ' */ 602 first_node = true; 603 list_for_each_entry_continue(fmt_node, &hists->hpp_formats, list) { 604 if (!first_node) 605 header_width += fprintf(fp, " / "); 606 first_node = false; 607 608 first_col = true; 609 perf_hpp_list__for_each_format(&fmt_node->hpp, fmt) { 610 if (perf_hpp__should_skip(fmt, hists)) 611 continue; 612 613 if (!first_col) 614 header_width += fprintf(fp, "+"); 615 first_col = false; 616 617 fmt->header(fmt, hpp, hists, 0, NULL); 618 619 header_width += fprintf(fp, "%s", trim(hpp->buf)); 620 } 621 } 622 623 fprintf(fp, "\n# "); 624 625 /* preserve max indent depth for initial dots */ 626 print_hierarchy_indent(sep, indent, dots, fp); 627 628 /* the first hpp_list_node is for overhead columns */ 629 fmt_node = list_first_entry(&hists->hpp_formats, 630 struct perf_hpp_list_node, list); 631 632 first_col = true; 633 perf_hpp_list__for_each_format(&fmt_node->hpp, fmt) { 634 if (!first_col) 635 fprintf(fp, "%s", sep ?: ".."); 636 first_col = false; 637 638 width = fmt->width(fmt, hpp, hists); 639 fprintf(fp, "%.*s", width, dots); 640 } 641 642 depth = 0; 643 list_for_each_entry_continue(fmt_node, &hists->hpp_formats, list) { 644 first_col = true; 645 width = depth * HIERARCHY_INDENT; 646 647 perf_hpp_list__for_each_format(&fmt_node->hpp, fmt) { 648 if (perf_hpp__should_skip(fmt, hists)) 649 continue; 650 651 if (!first_col) 652 width++; /* for '+' sign between column header */ 653 first_col = false; 654 655 width += fmt->width(fmt, hpp, hists); 656 } 657 658 if (width > header_width) 659 header_width = width; 660 661 depth++; 662 } 663 664 fprintf(fp, "%s%-.*s", sep ?: " ", header_width, dots); 665 666 fprintf(fp, "\n#\n"); 667 668 return 2; 669 } 670 671 static void fprintf_line(struct hists *hists, struct perf_hpp *hpp, 672 int line, FILE *fp) 673 { 674 struct perf_hpp_fmt *fmt; 675 const char *sep = symbol_conf.field_sep; 676 bool first = true; 677 int span = 0; 678 679 hists__for_each_format(hists, fmt) { 680 if (perf_hpp__should_skip(fmt, hists)) 681 continue; 682 683 if (!first && !span) 684 fprintf(fp, "%s", sep ?: " "); 685 else 686 first = false; 687 688 fmt->header(fmt, hpp, hists, line, &span); 689 690 if (!span) 691 fprintf(fp, "%s", hpp->buf); 692 } 693 } 694 695 static int 696 hists__fprintf_standard_headers(struct hists *hists, 697 struct perf_hpp *hpp, 698 FILE *fp) 699 { 700 struct perf_hpp_list *hpp_list = hists->hpp_list; 701 struct perf_hpp_fmt *fmt; 702 unsigned int width; 703 const char *sep = symbol_conf.field_sep; 704 bool first = true; 705 int line; 706 707 for (line = 0; line < hpp_list->nr_header_lines; line++) { 708 /* first # is displayed one level up */ 709 if (line) 710 fprintf(fp, "# "); 711 fprintf_line(hists, hpp, line, fp); 712 fprintf(fp, "\n"); 713 } 714 715 if (sep) 716 return hpp_list->nr_header_lines; 717 718 first = true; 719 720 fprintf(fp, "# "); 721 722 hists__for_each_format(hists, fmt) { 723 unsigned int i; 724 725 if (perf_hpp__should_skip(fmt, hists)) 726 continue; 727 728 if (!first) 729 fprintf(fp, "%s", sep ?: " "); 730 else 731 first = false; 732 733 width = fmt->width(fmt, hpp, hists); 734 for (i = 0; i < width; i++) 735 fprintf(fp, "."); 736 } 737 738 fprintf(fp, "\n"); 739 fprintf(fp, "#\n"); 740 return hpp_list->nr_header_lines + 2; 741 } 742 743 int hists__fprintf_headers(struct hists *hists, FILE *fp) 744 { 745 char bf[1024]; 746 struct perf_hpp dummy_hpp = { 747 .buf = bf, 748 .size = sizeof(bf), 749 }; 750 751 fprintf(fp, "# "); 752 753 if (symbol_conf.report_hierarchy) 754 return hists__fprintf_hierarchy_headers(hists, &dummy_hpp, fp); 755 else 756 return hists__fprintf_standard_headers(hists, &dummy_hpp, fp); 757 758 } 759 760 size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows, 761 int max_cols, float min_pcnt, FILE *fp, 762 bool ignore_callchains) 763 { 764 struct rb_node *nd; 765 size_t ret = 0; 766 const char *sep = symbol_conf.field_sep; 767 int nr_rows = 0; 768 size_t linesz; 769 char *line = NULL; 770 unsigned indent; 771 772 init_rem_hits(); 773 774 hists__reset_column_width(hists); 775 776 if (symbol_conf.col_width_list_str) 777 perf_hpp__set_user_width(symbol_conf.col_width_list_str); 778 779 if (show_header) 780 nr_rows += hists__fprintf_headers(hists, fp); 781 782 if (max_rows && nr_rows >= max_rows) 783 goto out; 784 785 linesz = hists__sort_list_width(hists) + 3 + 1; 786 linesz += perf_hpp__color_overhead(); 787 line = malloc(linesz); 788 if (line == NULL) { 789 ret = -1; 790 goto out; 791 } 792 793 indent = hists__overhead_width(hists) + 4; 794 795 for (nd = rb_first_cached(&hists->entries); nd; 796 nd = __rb_hierarchy_next(nd, HMD_FORCE_CHILD)) { 797 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); 798 float percent; 799 800 if (h->filtered) 801 continue; 802 803 percent = hist_entry__get_percent_limit(h); 804 if (percent < min_pcnt) 805 continue; 806 807 ret += hist_entry__fprintf(h, max_cols, line, linesz, fp, ignore_callchains); 808 809 if (max_rows && ++nr_rows >= max_rows) 810 break; 811 812 /* 813 * If all children are filtered out or percent-limited, 814 * display "no entry >= x.xx%" message. 815 */ 816 if (!h->leaf && !hist_entry__has_hierarchy_children(h, min_pcnt)) { 817 int depth = hists->nr_hpp_node + h->depth + 1; 818 819 print_hierarchy_indent(sep, depth, spaces, fp); 820 fprintf(fp, "%*sno entry >= %.2f%%\n", indent, "", min_pcnt); 821 822 if (max_rows && ++nr_rows >= max_rows) 823 break; 824 } 825 826 if (h->ms.map == NULL && verbose > 1) { 827 map_groups__fprintf(h->thread->mg, fp); 828 fprintf(fp, "%.10s end\n", graph_dotted_line); 829 } 830 } 831 832 free(line); 833 out: 834 zfree(&rem_sq_bracket); 835 836 return ret; 837 } 838 839 size_t events_stats__fprintf(struct events_stats *stats, FILE *fp) 840 { 841 int i; 842 size_t ret = 0; 843 844 for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) { 845 const char *name; 846 847 name = perf_event__name(i); 848 if (!strcmp(name, "UNKNOWN")) 849 continue; 850 851 ret += fprintf(fp, "%16s events: %10d\n", name, stats->nr_events[i]); 852 } 853 854 return ret; 855 } 856