1 /* 2 * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com> 3 * 4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; version 2 of the License (not later!) 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 * 19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 20 * 21 * The parts for function graph printing was taken and modified from the 22 * Linux Kernel that were written by Frederic Weisbecker. 23 */ 24 #define _GNU_SOURCE 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <string.h> 28 #include <ctype.h> 29 #include <errno.h> 30 31 #undef _GNU_SOURCE 32 #include "../perf.h" 33 #include "util.h" 34 #include "trace-event.h" 35 36 int header_page_ts_offset; 37 int header_page_ts_size; 38 int header_page_size_offset; 39 int header_page_size_size; 40 int header_page_data_offset; 41 int header_page_data_size; 42 43 static char *input_buf; 44 static unsigned long long input_buf_ptr; 45 static unsigned long long input_buf_siz; 46 47 static int cpus; 48 static int long_size; 49 50 static void init_input_buf(char *buf, unsigned long long size) 51 { 52 input_buf = buf; 53 input_buf_siz = size; 54 input_buf_ptr = 0; 55 } 56 57 struct cmdline { 58 char *comm; 59 int pid; 60 }; 61 62 static struct cmdline *cmdlines; 63 static int cmdline_count; 64 65 static int cmdline_cmp(const void *a, const void *b) 66 { 67 const struct cmdline *ca = a; 68 const struct cmdline *cb = b; 69 70 if (ca->pid < cb->pid) 71 return -1; 72 if (ca->pid > cb->pid) 73 return 1; 74 75 return 0; 76 } 77 78 void parse_cmdlines(char *file, int size __unused) 79 { 80 struct cmdline_list { 81 struct cmdline_list *next; 82 char *comm; 83 int pid; 84 } *list = NULL, *item; 85 char *line; 86 char *next = NULL; 87 int i; 88 89 line = strtok_r(file, "\n", &next); 90 while (line) { 91 item = malloc_or_die(sizeof(*item)); 92 sscanf(line, "%d %as", &item->pid, 93 (float *)(void *)&item->comm); /* workaround gcc warning */ 94 item->next = list; 95 list = item; 96 line = strtok_r(NULL, "\n", &next); 97 cmdline_count++; 98 } 99 100 cmdlines = malloc_or_die(sizeof(*cmdlines) * cmdline_count); 101 102 i = 0; 103 while (list) { 104 cmdlines[i].pid = list->pid; 105 cmdlines[i].comm = list->comm; 106 i++; 107 item = list; 108 list = list->next; 109 free(item); 110 } 111 112 qsort(cmdlines, cmdline_count, sizeof(*cmdlines), cmdline_cmp); 113 } 114 115 static struct func_map { 116 unsigned long long addr; 117 char *func; 118 char *mod; 119 } *func_list; 120 static unsigned int func_count; 121 122 static int func_cmp(const void *a, const void *b) 123 { 124 const struct func_map *fa = a; 125 const struct func_map *fb = b; 126 127 if (fa->addr < fb->addr) 128 return -1; 129 if (fa->addr > fb->addr) 130 return 1; 131 132 return 0; 133 } 134 135 void parse_proc_kallsyms(char *file, unsigned int size __unused) 136 { 137 struct func_list { 138 struct func_list *next; 139 unsigned long long addr; 140 char *func; 141 char *mod; 142 } *list = NULL, *item; 143 char *line; 144 char *next = NULL; 145 char *addr_str; 146 char ch; 147 int ret; 148 int i; 149 150 line = strtok_r(file, "\n", &next); 151 while (line) { 152 item = malloc_or_die(sizeof(*item)); 153 item->mod = NULL; 154 ret = sscanf(line, "%as %c %as\t[%as", 155 (float *)(void *)&addr_str, /* workaround gcc warning */ 156 &ch, 157 (float *)(void *)&item->func, 158 (float *)(void *)&item->mod); 159 item->addr = strtoull(addr_str, NULL, 16); 160 free(addr_str); 161 162 /* truncate the extra ']' */ 163 if (item->mod) 164 item->mod[strlen(item->mod) - 1] = 0; 165 166 167 item->next = list; 168 list = item; 169 line = strtok_r(NULL, "\n", &next); 170 func_count++; 171 } 172 173 func_list = malloc_or_die(sizeof(*func_list) * func_count + 1); 174 175 i = 0; 176 while (list) { 177 func_list[i].func = list->func; 178 func_list[i].addr = list->addr; 179 func_list[i].mod = list->mod; 180 i++; 181 item = list; 182 list = list->next; 183 free(item); 184 } 185 186 qsort(func_list, func_count, sizeof(*func_list), func_cmp); 187 188 /* 189 * Add a special record at the end. 190 */ 191 func_list[func_count].func = NULL; 192 func_list[func_count].addr = 0; 193 func_list[func_count].mod = NULL; 194 } 195 196 /* 197 * We are searching for a record in between, not an exact 198 * match. 199 */ 200 static int func_bcmp(const void *a, const void *b) 201 { 202 const struct func_map *fa = a; 203 const struct func_map *fb = b; 204 205 if ((fa->addr == fb->addr) || 206 207 (fa->addr > fb->addr && 208 fa->addr < (fb+1)->addr)) 209 return 0; 210 211 if (fa->addr < fb->addr) 212 return -1; 213 214 return 1; 215 } 216 217 static struct func_map *find_func(unsigned long long addr) 218 { 219 struct func_map *func; 220 struct func_map key; 221 222 key.addr = addr; 223 224 func = bsearch(&key, func_list, func_count, sizeof(*func_list), 225 func_bcmp); 226 227 return func; 228 } 229 230 void print_funcs(void) 231 { 232 int i; 233 234 for (i = 0; i < (int)func_count; i++) { 235 printf("%016llx %s", 236 func_list[i].addr, 237 func_list[i].func); 238 if (func_list[i].mod) 239 printf(" [%s]\n", func_list[i].mod); 240 else 241 printf("\n"); 242 } 243 } 244 245 static struct printk_map { 246 unsigned long long addr; 247 char *printk; 248 } *printk_list; 249 static unsigned int printk_count; 250 251 static int printk_cmp(const void *a, const void *b) 252 { 253 const struct func_map *fa = a; 254 const struct func_map *fb = b; 255 256 if (fa->addr < fb->addr) 257 return -1; 258 if (fa->addr > fb->addr) 259 return 1; 260 261 return 0; 262 } 263 264 static struct printk_map *find_printk(unsigned long long addr) 265 { 266 struct printk_map *printk; 267 struct printk_map key; 268 269 key.addr = addr; 270 271 printk = bsearch(&key, printk_list, printk_count, sizeof(*printk_list), 272 printk_cmp); 273 274 return printk; 275 } 276 277 void parse_ftrace_printk(char *file, unsigned int size __unused) 278 { 279 struct printk_list { 280 struct printk_list *next; 281 unsigned long long addr; 282 char *printk; 283 } *list = NULL, *item; 284 char *line; 285 char *next = NULL; 286 char *addr_str; 287 int ret; 288 int i; 289 290 line = strtok_r(file, "\n", &next); 291 while (line) { 292 item = malloc_or_die(sizeof(*item)); 293 ret = sscanf(line, "%as : %as", 294 (float *)(void *)&addr_str, /* workaround gcc warning */ 295 (float *)(void *)&item->printk); 296 item->addr = strtoull(addr_str, NULL, 16); 297 free(addr_str); 298 299 item->next = list; 300 list = item; 301 line = strtok_r(NULL, "\n", &next); 302 printk_count++; 303 } 304 305 printk_list = malloc_or_die(sizeof(*printk_list) * printk_count + 1); 306 307 i = 0; 308 while (list) { 309 printk_list[i].printk = list->printk; 310 printk_list[i].addr = list->addr; 311 i++; 312 item = list; 313 list = list->next; 314 free(item); 315 } 316 317 qsort(printk_list, printk_count, sizeof(*printk_list), printk_cmp); 318 } 319 320 void print_printk(void) 321 { 322 int i; 323 324 for (i = 0; i < (int)printk_count; i++) { 325 printf("%016llx %s\n", 326 printk_list[i].addr, 327 printk_list[i].printk); 328 } 329 } 330 331 static struct event *alloc_event(void) 332 { 333 struct event *event; 334 335 event = malloc_or_die(sizeof(*event)); 336 memset(event, 0, sizeof(*event)); 337 338 return event; 339 } 340 341 enum event_type { 342 EVENT_ERROR, 343 EVENT_NONE, 344 EVENT_SPACE, 345 EVENT_NEWLINE, 346 EVENT_OP, 347 EVENT_DELIM, 348 EVENT_ITEM, 349 EVENT_DQUOTE, 350 EVENT_SQUOTE, 351 }; 352 353 static struct event *event_list; 354 355 static void add_event(struct event *event) 356 { 357 event->next = event_list; 358 event_list = event; 359 } 360 361 static int event_item_type(enum event_type type) 362 { 363 switch (type) { 364 case EVENT_ITEM ... EVENT_SQUOTE: 365 return 1; 366 case EVENT_ERROR ... EVENT_DELIM: 367 default: 368 return 0; 369 } 370 } 371 372 static void free_arg(struct print_arg *arg) 373 { 374 if (!arg) 375 return; 376 377 switch (arg->type) { 378 case PRINT_ATOM: 379 if (arg->atom.atom) 380 free(arg->atom.atom); 381 break; 382 case PRINT_NULL: 383 case PRINT_FIELD ... PRINT_OP: 384 default: 385 /* todo */ 386 break; 387 } 388 389 free(arg); 390 } 391 392 static enum event_type get_type(int ch) 393 { 394 if (ch == '\n') 395 return EVENT_NEWLINE; 396 if (isspace(ch)) 397 return EVENT_SPACE; 398 if (isalnum(ch) || ch == '_') 399 return EVENT_ITEM; 400 if (ch == '\'') 401 return EVENT_SQUOTE; 402 if (ch == '"') 403 return EVENT_DQUOTE; 404 if (!isprint(ch)) 405 return EVENT_NONE; 406 if (ch == '(' || ch == ')' || ch == ',') 407 return EVENT_DELIM; 408 409 return EVENT_OP; 410 } 411 412 static int __read_char(void) 413 { 414 if (input_buf_ptr >= input_buf_siz) 415 return -1; 416 417 return input_buf[input_buf_ptr++]; 418 } 419 420 static int __peek_char(void) 421 { 422 if (input_buf_ptr >= input_buf_siz) 423 return -1; 424 425 return input_buf[input_buf_ptr]; 426 } 427 428 static enum event_type __read_token(char **tok) 429 { 430 char buf[BUFSIZ]; 431 int ch, last_ch, quote_ch, next_ch; 432 int i = 0; 433 int tok_size = 0; 434 enum event_type type; 435 436 *tok = NULL; 437 438 439 ch = __read_char(); 440 if (ch < 0) 441 return EVENT_NONE; 442 443 type = get_type(ch); 444 if (type == EVENT_NONE) 445 return type; 446 447 buf[i++] = ch; 448 449 switch (type) { 450 case EVENT_NEWLINE: 451 case EVENT_DELIM: 452 *tok = malloc_or_die(2); 453 (*tok)[0] = ch; 454 (*tok)[1] = 0; 455 return type; 456 457 case EVENT_OP: 458 switch (ch) { 459 case '-': 460 next_ch = __peek_char(); 461 if (next_ch == '>') { 462 buf[i++] = __read_char(); 463 break; 464 } 465 /* fall through */ 466 case '+': 467 case '|': 468 case '&': 469 case '>': 470 case '<': 471 last_ch = ch; 472 ch = __peek_char(); 473 if (ch != last_ch) 474 goto test_equal; 475 buf[i++] = __read_char(); 476 switch (last_ch) { 477 case '>': 478 case '<': 479 goto test_equal; 480 default: 481 break; 482 } 483 break; 484 case '!': 485 case '=': 486 goto test_equal; 487 default: /* what should we do instead? */ 488 break; 489 } 490 buf[i] = 0; 491 *tok = strdup(buf); 492 return type; 493 494 test_equal: 495 ch = __peek_char(); 496 if (ch == '=') 497 buf[i++] = __read_char(); 498 break; 499 500 case EVENT_DQUOTE: 501 case EVENT_SQUOTE: 502 /* don't keep quotes */ 503 i--; 504 quote_ch = ch; 505 last_ch = 0; 506 do { 507 if (i == (BUFSIZ - 1)) { 508 buf[i] = 0; 509 if (*tok) { 510 *tok = realloc(*tok, tok_size + BUFSIZ); 511 if (!*tok) 512 return EVENT_NONE; 513 strcat(*tok, buf); 514 } else 515 *tok = strdup(buf); 516 517 if (!*tok) 518 return EVENT_NONE; 519 tok_size += BUFSIZ; 520 i = 0; 521 } 522 last_ch = ch; 523 ch = __read_char(); 524 buf[i++] = ch; 525 /* the '\' '\' will cancel itself */ 526 if (ch == '\\' && last_ch == '\\') 527 last_ch = 0; 528 } while (ch != quote_ch || last_ch == '\\'); 529 /* remove the last quote */ 530 i--; 531 goto out; 532 533 case EVENT_ERROR ... EVENT_SPACE: 534 case EVENT_ITEM: 535 default: 536 break; 537 } 538 539 while (get_type(__peek_char()) == type) { 540 if (i == (BUFSIZ - 1)) { 541 buf[i] = 0; 542 if (*tok) { 543 *tok = realloc(*tok, tok_size + BUFSIZ); 544 if (!*tok) 545 return EVENT_NONE; 546 strcat(*tok, buf); 547 } else 548 *tok = strdup(buf); 549 550 if (!*tok) 551 return EVENT_NONE; 552 tok_size += BUFSIZ; 553 i = 0; 554 } 555 ch = __read_char(); 556 buf[i++] = ch; 557 } 558 559 out: 560 buf[i] = 0; 561 if (*tok) { 562 *tok = realloc(*tok, tok_size + i); 563 if (!*tok) 564 return EVENT_NONE; 565 strcat(*tok, buf); 566 } else 567 *tok = strdup(buf); 568 if (!*tok) 569 return EVENT_NONE; 570 571 return type; 572 } 573 574 static void free_token(char *tok) 575 { 576 if (tok) 577 free(tok); 578 } 579 580 static enum event_type read_token(char **tok) 581 { 582 enum event_type type; 583 584 for (;;) { 585 type = __read_token(tok); 586 if (type != EVENT_SPACE) 587 return type; 588 589 free_token(*tok); 590 } 591 592 /* not reached */ 593 return EVENT_NONE; 594 } 595 596 /* no newline */ 597 static enum event_type read_token_item(char **tok) 598 { 599 enum event_type type; 600 601 for (;;) { 602 type = __read_token(tok); 603 if (type != EVENT_SPACE && type != EVENT_NEWLINE) 604 return type; 605 606 free_token(*tok); 607 } 608 609 /* not reached */ 610 return EVENT_NONE; 611 } 612 613 static int test_type(enum event_type type, enum event_type expect) 614 { 615 if (type != expect) { 616 die("Error: expected type %d but read %d", 617 expect, type); 618 return -1; 619 } 620 return 0; 621 } 622 623 static int test_type_token(enum event_type type, char *token, 624 enum event_type expect, const char *expect_tok) 625 { 626 if (type != expect) { 627 die("Error: expected type %d but read %d", 628 expect, type); 629 return -1; 630 } 631 632 if (strcmp(token, expect_tok) != 0) { 633 die("Error: expected '%s' but read '%s'", 634 expect_tok, token); 635 return -1; 636 } 637 return 0; 638 } 639 640 static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) 641 { 642 enum event_type type; 643 644 if (newline_ok) 645 type = read_token(tok); 646 else 647 type = read_token_item(tok); 648 return test_type(type, expect); 649 } 650 651 static int read_expect_type(enum event_type expect, char **tok) 652 { 653 return __read_expect_type(expect, tok, 1); 654 } 655 656 static int __read_expected(enum event_type expect, const char *str, int newline_ok) 657 { 658 enum event_type type; 659 char *token; 660 int ret; 661 662 if (newline_ok) 663 type = read_token(&token); 664 else 665 type = read_token_item(&token); 666 667 ret = test_type_token(type, token, expect, str); 668 669 free_token(token); 670 671 return 0; 672 } 673 674 static int read_expected(enum event_type expect, const char *str) 675 { 676 return __read_expected(expect, str, 1); 677 } 678 679 static int read_expected_item(enum event_type expect, const char *str) 680 { 681 return __read_expected(expect, str, 0); 682 } 683 684 static char *event_read_name(void) 685 { 686 char *token; 687 688 if (read_expected(EVENT_ITEM, (char *)"name") < 0) 689 return NULL; 690 691 if (read_expected(EVENT_OP, (char *)":") < 0) 692 return NULL; 693 694 if (read_expect_type(EVENT_ITEM, &token) < 0) 695 goto fail; 696 697 return token; 698 699 fail: 700 free_token(token); 701 return NULL; 702 } 703 704 static int event_read_id(void) 705 { 706 char *token; 707 int id; 708 709 if (read_expected_item(EVENT_ITEM, (char *)"ID") < 0) 710 return -1; 711 712 if (read_expected(EVENT_OP, (char *)":") < 0) 713 return -1; 714 715 if (read_expect_type(EVENT_ITEM, &token) < 0) 716 goto fail; 717 718 id = strtoul(token, NULL, 0); 719 free_token(token); 720 return id; 721 722 fail: 723 free_token(token); 724 return -1; 725 } 726 727 static int field_is_string(struct format_field *field) 728 { 729 if ((field->flags & FIELD_IS_ARRAY) && 730 (!strstr(field->type, "char") || !strstr(field->type, "u8") || 731 !strstr(field->type, "s8"))) 732 return 1; 733 734 return 0; 735 } 736 737 static int field_is_dynamic(struct format_field *field) 738 { 739 if (!strcmp(field->type, "__data_loc")) 740 return 1; 741 742 return 0; 743 } 744 745 static int event_read_fields(struct event *event, struct format_field **fields) 746 { 747 struct format_field *field = NULL; 748 enum event_type type; 749 char *token; 750 char *last_token; 751 int count = 0; 752 753 do { 754 type = read_token(&token); 755 if (type == EVENT_NEWLINE) { 756 free_token(token); 757 return count; 758 } 759 760 count++; 761 762 if (test_type_token(type, token, EVENT_ITEM, (char *)"field")) 763 goto fail; 764 free_token(token); 765 766 type = read_token(&token); 767 /* 768 * The ftrace fields may still use the "special" name. 769 * Just ignore it. 770 */ 771 if (event->flags & EVENT_FL_ISFTRACE && 772 type == EVENT_ITEM && strcmp(token, "special") == 0) { 773 free_token(token); 774 type = read_token(&token); 775 } 776 777 if (test_type_token(type, token, EVENT_OP, (char *)":") < 0) 778 return -1; 779 780 if (read_expect_type(EVENT_ITEM, &token) < 0) 781 goto fail; 782 783 last_token = token; 784 785 field = malloc_or_die(sizeof(*field)); 786 memset(field, 0, sizeof(*field)); 787 788 /* read the rest of the type */ 789 for (;;) { 790 type = read_token(&token); 791 if (type == EVENT_ITEM || 792 (type == EVENT_OP && strcmp(token, "*") == 0) || 793 /* 794 * Some of the ftrace fields are broken and have 795 * an illegal "." in them. 796 */ 797 (event->flags & EVENT_FL_ISFTRACE && 798 type == EVENT_OP && strcmp(token, ".") == 0)) { 799 800 if (strcmp(token, "*") == 0) 801 field->flags |= FIELD_IS_POINTER; 802 803 if (field->type) { 804 field->type = realloc(field->type, 805 strlen(field->type) + 806 strlen(last_token) + 2); 807 strcat(field->type, " "); 808 strcat(field->type, last_token); 809 } else 810 field->type = last_token; 811 last_token = token; 812 continue; 813 } 814 815 break; 816 } 817 818 if (!field->type) { 819 die("no type found"); 820 goto fail; 821 } 822 field->name = last_token; 823 824 if (test_type(type, EVENT_OP)) 825 goto fail; 826 827 if (strcmp(token, "[") == 0) { 828 enum event_type last_type = type; 829 char *brackets = token; 830 int len; 831 832 field->flags |= FIELD_IS_ARRAY; 833 834 type = read_token(&token); 835 while (strcmp(token, "]") != 0) { 836 if (last_type == EVENT_ITEM && 837 type == EVENT_ITEM) 838 len = 2; 839 else 840 len = 1; 841 last_type = type; 842 843 brackets = realloc(brackets, 844 strlen(brackets) + 845 strlen(token) + len); 846 if (len == 2) 847 strcat(brackets, " "); 848 strcat(brackets, token); 849 free_token(token); 850 type = read_token(&token); 851 if (type == EVENT_NONE) { 852 die("failed to find token"); 853 goto fail; 854 } 855 } 856 857 free_token(token); 858 859 brackets = realloc(brackets, strlen(brackets) + 2); 860 strcat(brackets, "]"); 861 862 /* add brackets to type */ 863 864 type = read_token(&token); 865 /* 866 * If the next token is not an OP, then it is of 867 * the format: type [] item; 868 */ 869 if (type == EVENT_ITEM) { 870 field->type = realloc(field->type, 871 strlen(field->type) + 872 strlen(field->name) + 873 strlen(brackets) + 2); 874 strcat(field->type, " "); 875 strcat(field->type, field->name); 876 free_token(field->name); 877 strcat(field->type, brackets); 878 field->name = token; 879 type = read_token(&token); 880 } else { 881 field->type = realloc(field->type, 882 strlen(field->type) + 883 strlen(brackets) + 1); 884 strcat(field->type, brackets); 885 } 886 free(brackets); 887 } 888 889 if (field_is_string(field)) { 890 field->flags |= FIELD_IS_STRING; 891 if (field_is_dynamic(field)) 892 field->flags |= FIELD_IS_DYNAMIC; 893 } 894 895 if (test_type_token(type, token, EVENT_OP, (char *)";")) 896 goto fail; 897 free_token(token); 898 899 if (read_expected(EVENT_ITEM, (char *)"offset") < 0) 900 goto fail_expect; 901 902 if (read_expected(EVENT_OP, (char *)":") < 0) 903 goto fail_expect; 904 905 if (read_expect_type(EVENT_ITEM, &token)) 906 goto fail; 907 field->offset = strtoul(token, NULL, 0); 908 free_token(token); 909 910 if (read_expected(EVENT_OP, (char *)";") < 0) 911 goto fail_expect; 912 913 if (read_expected(EVENT_ITEM, (char *)"size") < 0) 914 goto fail_expect; 915 916 if (read_expected(EVENT_OP, (char *)":") < 0) 917 goto fail_expect; 918 919 if (read_expect_type(EVENT_ITEM, &token)) 920 goto fail; 921 field->size = strtoul(token, NULL, 0); 922 free_token(token); 923 924 if (read_expected(EVENT_OP, (char *)";") < 0) 925 goto fail_expect; 926 927 if (read_expected(EVENT_ITEM, (char *)"signed") < 0) 928 goto fail_expect; 929 930 if (read_expected(EVENT_OP, (char *)":") < 0) 931 goto fail_expect; 932 933 if (read_expect_type(EVENT_ITEM, &token)) 934 goto fail; 935 if (strtoul(token, NULL, 0)) 936 field->flags |= FIELD_IS_SIGNED; 937 free_token(token); 938 939 if (read_expected(EVENT_OP, (char *)";") < 0) 940 goto fail_expect; 941 942 if (read_expect_type(EVENT_NEWLINE, &token) < 0) 943 goto fail; 944 free_token(token); 945 946 *fields = field; 947 fields = &field->next; 948 949 } while (1); 950 951 return 0; 952 953 fail: 954 free_token(token); 955 fail_expect: 956 if (field) 957 free(field); 958 return -1; 959 } 960 961 static int event_read_format(struct event *event) 962 { 963 char *token; 964 int ret; 965 966 if (read_expected_item(EVENT_ITEM, (char *)"format") < 0) 967 return -1; 968 969 if (read_expected(EVENT_OP, (char *)":") < 0) 970 return -1; 971 972 if (read_expect_type(EVENT_NEWLINE, &token)) 973 goto fail; 974 free_token(token); 975 976 ret = event_read_fields(event, &event->format.common_fields); 977 if (ret < 0) 978 return ret; 979 event->format.nr_common = ret; 980 981 ret = event_read_fields(event, &event->format.fields); 982 if (ret < 0) 983 return ret; 984 event->format.nr_fields = ret; 985 986 return 0; 987 988 fail: 989 free_token(token); 990 return -1; 991 } 992 993 enum event_type 994 process_arg_token(struct event *event, struct print_arg *arg, 995 char **tok, enum event_type type); 996 997 static enum event_type 998 process_arg(struct event *event, struct print_arg *arg, char **tok) 999 { 1000 enum event_type type; 1001 char *token; 1002 1003 type = read_token(&token); 1004 *tok = token; 1005 1006 return process_arg_token(event, arg, tok, type); 1007 } 1008 1009 static enum event_type 1010 process_cond(struct event *event, struct print_arg *top, char **tok) 1011 { 1012 struct print_arg *arg, *left, *right; 1013 enum event_type type; 1014 char *token = NULL; 1015 1016 arg = malloc_or_die(sizeof(*arg)); 1017 memset(arg, 0, sizeof(*arg)); 1018 1019 left = malloc_or_die(sizeof(*left)); 1020 1021 right = malloc_or_die(sizeof(*right)); 1022 1023 arg->type = PRINT_OP; 1024 arg->op.left = left; 1025 arg->op.right = right; 1026 1027 *tok = NULL; 1028 type = process_arg(event, left, &token); 1029 if (test_type_token(type, token, EVENT_OP, (char *)":")) 1030 goto out_free; 1031 1032 arg->op.op = token; 1033 1034 type = process_arg(event, right, &token); 1035 1036 top->op.right = arg; 1037 1038 *tok = token; 1039 return type; 1040 1041 out_free: 1042 free_token(*tok); 1043 free(right); 1044 free(left); 1045 free_arg(arg); 1046 return EVENT_ERROR; 1047 } 1048 1049 static enum event_type 1050 process_array(struct event *event, struct print_arg *top, char **tok) 1051 { 1052 struct print_arg *arg; 1053 enum event_type type; 1054 char *token = NULL; 1055 1056 arg = malloc_or_die(sizeof(*arg)); 1057 memset(arg, 0, sizeof(*arg)); 1058 1059 *tok = NULL; 1060 type = process_arg(event, arg, &token); 1061 if (test_type_token(type, token, EVENT_OP, (char *)"]")) 1062 goto out_free; 1063 1064 top->op.right = arg; 1065 1066 free_token(token); 1067 type = read_token_item(&token); 1068 *tok = token; 1069 1070 return type; 1071 1072 out_free: 1073 free_token(*tok); 1074 free_arg(arg); 1075 return EVENT_ERROR; 1076 } 1077 1078 static int get_op_prio(char *op) 1079 { 1080 if (!op[1]) { 1081 switch (op[0]) { 1082 case '*': 1083 case '/': 1084 case '%': 1085 return 6; 1086 case '+': 1087 case '-': 1088 return 7; 1089 /* '>>' and '<<' are 8 */ 1090 case '<': 1091 case '>': 1092 return 9; 1093 /* '==' and '!=' are 10 */ 1094 case '&': 1095 return 11; 1096 case '^': 1097 return 12; 1098 case '|': 1099 return 13; 1100 case '?': 1101 return 16; 1102 default: 1103 die("unknown op '%c'", op[0]); 1104 return -1; 1105 } 1106 } else { 1107 if (strcmp(op, "++") == 0 || 1108 strcmp(op, "--") == 0) { 1109 return 3; 1110 } else if (strcmp(op, ">>") == 0 || 1111 strcmp(op, "<<") == 0) { 1112 return 8; 1113 } else if (strcmp(op, ">=") == 0 || 1114 strcmp(op, "<=") == 0) { 1115 return 9; 1116 } else if (strcmp(op, "==") == 0 || 1117 strcmp(op, "!=") == 0) { 1118 return 10; 1119 } else if (strcmp(op, "&&") == 0) { 1120 return 14; 1121 } else if (strcmp(op, "||") == 0) { 1122 return 15; 1123 } else { 1124 die("unknown op '%s'", op); 1125 return -1; 1126 } 1127 } 1128 } 1129 1130 static void set_op_prio(struct print_arg *arg) 1131 { 1132 1133 /* single ops are the greatest */ 1134 if (!arg->op.left || arg->op.left->type == PRINT_NULL) { 1135 arg->op.prio = 0; 1136 return; 1137 } 1138 1139 arg->op.prio = get_op_prio(arg->op.op); 1140 } 1141 1142 static enum event_type 1143 process_op(struct event *event, struct print_arg *arg, char **tok) 1144 { 1145 struct print_arg *left, *right = NULL; 1146 enum event_type type; 1147 char *token; 1148 1149 /* the op is passed in via tok */ 1150 token = *tok; 1151 1152 if (arg->type == PRINT_OP && !arg->op.left) { 1153 /* handle single op */ 1154 if (token[1]) { 1155 die("bad op token %s", token); 1156 return EVENT_ERROR; 1157 } 1158 switch (token[0]) { 1159 case '!': 1160 case '+': 1161 case '-': 1162 break; 1163 default: 1164 die("bad op token %s", token); 1165 return EVENT_ERROR; 1166 } 1167 1168 /* make an empty left */ 1169 left = malloc_or_die(sizeof(*left)); 1170 left->type = PRINT_NULL; 1171 arg->op.left = left; 1172 1173 right = malloc_or_die(sizeof(*right)); 1174 arg->op.right = right; 1175 1176 type = process_arg(event, right, tok); 1177 1178 } else if (strcmp(token, "?") == 0) { 1179 1180 left = malloc_or_die(sizeof(*left)); 1181 /* copy the top arg to the left */ 1182 *left = *arg; 1183 1184 arg->type = PRINT_OP; 1185 arg->op.op = token; 1186 arg->op.left = left; 1187 arg->op.prio = 0; 1188 1189 type = process_cond(event, arg, tok); 1190 1191 } else if (strcmp(token, ">>") == 0 || 1192 strcmp(token, "<<") == 0 || 1193 strcmp(token, "&") == 0 || 1194 strcmp(token, "|") == 0 || 1195 strcmp(token, "&&") == 0 || 1196 strcmp(token, "||") == 0 || 1197 strcmp(token, "-") == 0 || 1198 strcmp(token, "+") == 0 || 1199 strcmp(token, "*") == 0 || 1200 strcmp(token, "^") == 0 || 1201 strcmp(token, "/") == 0 || 1202 strcmp(token, "<") == 0 || 1203 strcmp(token, ">") == 0 || 1204 strcmp(token, "==") == 0 || 1205 strcmp(token, "!=") == 0) { 1206 1207 left = malloc_or_die(sizeof(*left)); 1208 1209 /* copy the top arg to the left */ 1210 *left = *arg; 1211 1212 arg->type = PRINT_OP; 1213 arg->op.op = token; 1214 arg->op.left = left; 1215 1216 set_op_prio(arg); 1217 1218 right = malloc_or_die(sizeof(*right)); 1219 1220 type = read_token_item(&token); 1221 *tok = token; 1222 1223 /* could just be a type pointer */ 1224 if ((strcmp(arg->op.op, "*") == 0) && 1225 type == EVENT_DELIM && (strcmp(token, ")") == 0)) { 1226 if (left->type != PRINT_ATOM) 1227 die("bad pointer type"); 1228 left->atom.atom = realloc(left->atom.atom, 1229 sizeof(left->atom.atom) + 3); 1230 strcat(left->atom.atom, " *"); 1231 *arg = *left; 1232 free(arg); 1233 1234 return type; 1235 } 1236 1237 type = process_arg_token(event, right, tok, type); 1238 1239 arg->op.right = right; 1240 1241 } else if (strcmp(token, "[") == 0) { 1242 1243 left = malloc_or_die(sizeof(*left)); 1244 *left = *arg; 1245 1246 arg->type = PRINT_OP; 1247 arg->op.op = token; 1248 arg->op.left = left; 1249 1250 arg->op.prio = 0; 1251 type = process_array(event, arg, tok); 1252 1253 } else { 1254 die("unknown op '%s'", token); 1255 /* the arg is now the left side */ 1256 return EVENT_NONE; 1257 } 1258 1259 1260 if (type == EVENT_OP) { 1261 int prio; 1262 1263 /* higher prios need to be closer to the root */ 1264 prio = get_op_prio(*tok); 1265 1266 if (prio > arg->op.prio) 1267 return process_op(event, arg, tok); 1268 1269 return process_op(event, right, tok); 1270 } 1271 1272 return type; 1273 } 1274 1275 static enum event_type 1276 process_entry(struct event *event __unused, struct print_arg *arg, 1277 char **tok) 1278 { 1279 enum event_type type; 1280 char *field; 1281 char *token; 1282 1283 if (read_expected(EVENT_OP, (char *)"->") < 0) 1284 return EVENT_ERROR; 1285 1286 if (read_expect_type(EVENT_ITEM, &token) < 0) 1287 goto fail; 1288 field = token; 1289 1290 arg->type = PRINT_FIELD; 1291 arg->field.name = field; 1292 1293 type = read_token(&token); 1294 *tok = token; 1295 1296 return type; 1297 1298 fail: 1299 free_token(token); 1300 return EVENT_ERROR; 1301 } 1302 1303 static char *arg_eval (struct print_arg *arg); 1304 1305 static long long arg_num_eval(struct print_arg *arg) 1306 { 1307 long long left, right; 1308 long long val = 0; 1309 1310 switch (arg->type) { 1311 case PRINT_ATOM: 1312 val = strtoll(arg->atom.atom, NULL, 0); 1313 break; 1314 case PRINT_TYPE: 1315 val = arg_num_eval(arg->typecast.item); 1316 break; 1317 case PRINT_OP: 1318 switch (arg->op.op[0]) { 1319 case '|': 1320 left = arg_num_eval(arg->op.left); 1321 right = arg_num_eval(arg->op.right); 1322 if (arg->op.op[1]) 1323 val = left || right; 1324 else 1325 val = left | right; 1326 break; 1327 case '&': 1328 left = arg_num_eval(arg->op.left); 1329 right = arg_num_eval(arg->op.right); 1330 if (arg->op.op[1]) 1331 val = left && right; 1332 else 1333 val = left & right; 1334 break; 1335 case '<': 1336 left = arg_num_eval(arg->op.left); 1337 right = arg_num_eval(arg->op.right); 1338 switch (arg->op.op[1]) { 1339 case 0: 1340 val = left < right; 1341 break; 1342 case '<': 1343 val = left << right; 1344 break; 1345 case '=': 1346 val = left <= right; 1347 break; 1348 default: 1349 die("unknown op '%s'", arg->op.op); 1350 } 1351 break; 1352 case '>': 1353 left = arg_num_eval(arg->op.left); 1354 right = arg_num_eval(arg->op.right); 1355 switch (arg->op.op[1]) { 1356 case 0: 1357 val = left > right; 1358 break; 1359 case '>': 1360 val = left >> right; 1361 break; 1362 case '=': 1363 val = left >= right; 1364 break; 1365 default: 1366 die("unknown op '%s'", arg->op.op); 1367 } 1368 break; 1369 case '=': 1370 left = arg_num_eval(arg->op.left); 1371 right = arg_num_eval(arg->op.right); 1372 1373 if (arg->op.op[1] != '=') 1374 die("unknown op '%s'", arg->op.op); 1375 1376 val = left == right; 1377 break; 1378 case '!': 1379 left = arg_num_eval(arg->op.left); 1380 right = arg_num_eval(arg->op.right); 1381 1382 switch (arg->op.op[1]) { 1383 case '=': 1384 val = left != right; 1385 break; 1386 default: 1387 die("unknown op '%s'", arg->op.op); 1388 } 1389 break; 1390 default: 1391 die("unknown op '%s'", arg->op.op); 1392 } 1393 break; 1394 1395 case PRINT_NULL: 1396 case PRINT_FIELD ... PRINT_SYMBOL: 1397 case PRINT_STRING: 1398 default: 1399 die("invalid eval type %d", arg->type); 1400 1401 } 1402 return val; 1403 } 1404 1405 static char *arg_eval (struct print_arg *arg) 1406 { 1407 long long val; 1408 static char buf[20]; 1409 1410 switch (arg->type) { 1411 case PRINT_ATOM: 1412 return arg->atom.atom; 1413 case PRINT_TYPE: 1414 return arg_eval(arg->typecast.item); 1415 case PRINT_OP: 1416 val = arg_num_eval(arg); 1417 sprintf(buf, "%lld", val); 1418 return buf; 1419 1420 case PRINT_NULL: 1421 case PRINT_FIELD ... PRINT_SYMBOL: 1422 case PRINT_STRING: 1423 default: 1424 die("invalid eval type %d", arg->type); 1425 break; 1426 } 1427 1428 return NULL; 1429 } 1430 1431 static enum event_type 1432 process_fields(struct event *event, struct print_flag_sym **list, char **tok) 1433 { 1434 enum event_type type; 1435 struct print_arg *arg = NULL; 1436 struct print_flag_sym *field; 1437 char *token = NULL; 1438 char *value; 1439 1440 do { 1441 free_token(token); 1442 type = read_token_item(&token); 1443 if (test_type_token(type, token, EVENT_OP, (char *)"{")) 1444 break; 1445 1446 arg = malloc_or_die(sizeof(*arg)); 1447 1448 free_token(token); 1449 type = process_arg(event, arg, &token); 1450 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1451 goto out_free; 1452 1453 field = malloc_or_die(sizeof(*field)); 1454 memset(field, 0, sizeof(field)); 1455 1456 value = arg_eval(arg); 1457 field->value = strdup(value); 1458 1459 free_token(token); 1460 type = process_arg(event, arg, &token); 1461 if (test_type_token(type, token, EVENT_OP, (char *)"}")) 1462 goto out_free; 1463 1464 value = arg_eval(arg); 1465 field->str = strdup(value); 1466 free_arg(arg); 1467 arg = NULL; 1468 1469 *list = field; 1470 list = &field->next; 1471 1472 free_token(token); 1473 type = read_token_item(&token); 1474 } while (type == EVENT_DELIM && strcmp(token, ",") == 0); 1475 1476 *tok = token; 1477 return type; 1478 1479 out_free: 1480 free_arg(arg); 1481 free_token(token); 1482 1483 return EVENT_ERROR; 1484 } 1485 1486 static enum event_type 1487 process_flags(struct event *event, struct print_arg *arg, char **tok) 1488 { 1489 struct print_arg *field; 1490 enum event_type type; 1491 char *token; 1492 1493 memset(arg, 0, sizeof(*arg)); 1494 arg->type = PRINT_FLAGS; 1495 1496 if (read_expected_item(EVENT_DELIM, (char *)"(") < 0) 1497 return EVENT_ERROR; 1498 1499 field = malloc_or_die(sizeof(*field)); 1500 1501 type = process_arg(event, field, &token); 1502 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1503 goto out_free; 1504 1505 arg->flags.field = field; 1506 1507 type = read_token_item(&token); 1508 if (event_item_type(type)) { 1509 arg->flags.delim = token; 1510 type = read_token_item(&token); 1511 } 1512 1513 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1514 goto out_free; 1515 1516 type = process_fields(event, &arg->flags.flags, &token); 1517 if (test_type_token(type, token, EVENT_DELIM, (char *)")")) 1518 goto out_free; 1519 1520 free_token(token); 1521 type = read_token_item(tok); 1522 return type; 1523 1524 out_free: 1525 free_token(token); 1526 return EVENT_ERROR; 1527 } 1528 1529 static enum event_type 1530 process_symbols(struct event *event, struct print_arg *arg, char **tok) 1531 { 1532 struct print_arg *field; 1533 enum event_type type; 1534 char *token; 1535 1536 memset(arg, 0, sizeof(*arg)); 1537 arg->type = PRINT_SYMBOL; 1538 1539 if (read_expected_item(EVENT_DELIM, (char *)"(") < 0) 1540 return EVENT_ERROR; 1541 1542 field = malloc_or_die(sizeof(*field)); 1543 1544 type = process_arg(event, field, &token); 1545 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1546 goto out_free; 1547 1548 arg->symbol.field = field; 1549 1550 type = process_fields(event, &arg->symbol.symbols, &token); 1551 if (test_type_token(type, token, EVENT_DELIM, (char *)")")) 1552 goto out_free; 1553 1554 free_token(token); 1555 type = read_token_item(tok); 1556 return type; 1557 1558 out_free: 1559 free_token(token); 1560 return EVENT_ERROR; 1561 } 1562 1563 static enum event_type 1564 process_paren(struct event *event, struct print_arg *arg, char **tok) 1565 { 1566 struct print_arg *item_arg; 1567 enum event_type type; 1568 char *token; 1569 1570 type = process_arg(event, arg, &token); 1571 1572 if (type == EVENT_ERROR) 1573 return EVENT_ERROR; 1574 1575 if (type == EVENT_OP) 1576 type = process_op(event, arg, &token); 1577 1578 if (type == EVENT_ERROR) 1579 return EVENT_ERROR; 1580 1581 if (test_type_token(type, token, EVENT_DELIM, (char *)")")) { 1582 free_token(token); 1583 return EVENT_ERROR; 1584 } 1585 1586 free_token(token); 1587 type = read_token_item(&token); 1588 1589 /* 1590 * If the next token is an item or another open paren, then 1591 * this was a typecast. 1592 */ 1593 if (event_item_type(type) || 1594 (type == EVENT_DELIM && strcmp(token, "(") == 0)) { 1595 1596 /* make this a typecast and contine */ 1597 1598 /* prevous must be an atom */ 1599 if (arg->type != PRINT_ATOM) 1600 die("previous needed to be PRINT_ATOM"); 1601 1602 item_arg = malloc_or_die(sizeof(*item_arg)); 1603 1604 arg->type = PRINT_TYPE; 1605 arg->typecast.type = arg->atom.atom; 1606 arg->typecast.item = item_arg; 1607 type = process_arg_token(event, item_arg, &token, type); 1608 1609 } 1610 1611 *tok = token; 1612 return type; 1613 } 1614 1615 1616 static enum event_type 1617 process_str(struct event *event __unused, struct print_arg *arg, char **tok) 1618 { 1619 enum event_type type; 1620 char *token; 1621 1622 if (read_expected(EVENT_DELIM, (char *)"(") < 0) 1623 return EVENT_ERROR; 1624 1625 if (read_expect_type(EVENT_ITEM, &token) < 0) 1626 goto fail; 1627 1628 arg->type = PRINT_STRING; 1629 arg->string.string = token; 1630 arg->string.offset = -1; 1631 1632 if (read_expected(EVENT_DELIM, (char *)")") < 0) 1633 return EVENT_ERROR; 1634 1635 type = read_token(&token); 1636 *tok = token; 1637 1638 return type; 1639 fail: 1640 free_token(token); 1641 return EVENT_ERROR; 1642 } 1643 1644 enum event_type 1645 process_arg_token(struct event *event, struct print_arg *arg, 1646 char **tok, enum event_type type) 1647 { 1648 char *token; 1649 char *atom; 1650 1651 token = *tok; 1652 1653 switch (type) { 1654 case EVENT_ITEM: 1655 if (strcmp(token, "REC") == 0) { 1656 free_token(token); 1657 type = process_entry(event, arg, &token); 1658 } else if (strcmp(token, "__print_flags") == 0) { 1659 free_token(token); 1660 type = process_flags(event, arg, &token); 1661 } else if (strcmp(token, "__print_symbolic") == 0) { 1662 free_token(token); 1663 type = process_symbols(event, arg, &token); 1664 } else if (strcmp(token, "__get_str") == 0) { 1665 free_token(token); 1666 type = process_str(event, arg, &token); 1667 } else { 1668 atom = token; 1669 /* test the next token */ 1670 type = read_token_item(&token); 1671 1672 /* atoms can be more than one token long */ 1673 while (type == EVENT_ITEM) { 1674 atom = realloc(atom, strlen(atom) + strlen(token) + 2); 1675 strcat(atom, " "); 1676 strcat(atom, token); 1677 free_token(token); 1678 type = read_token_item(&token); 1679 } 1680 1681 /* todo, test for function */ 1682 1683 arg->type = PRINT_ATOM; 1684 arg->atom.atom = atom; 1685 } 1686 break; 1687 case EVENT_DQUOTE: 1688 case EVENT_SQUOTE: 1689 arg->type = PRINT_ATOM; 1690 arg->atom.atom = token; 1691 type = read_token_item(&token); 1692 break; 1693 case EVENT_DELIM: 1694 if (strcmp(token, "(") == 0) { 1695 free_token(token); 1696 type = process_paren(event, arg, &token); 1697 break; 1698 } 1699 case EVENT_OP: 1700 /* handle single ops */ 1701 arg->type = PRINT_OP; 1702 arg->op.op = token; 1703 arg->op.left = NULL; 1704 type = process_op(event, arg, &token); 1705 1706 break; 1707 1708 case EVENT_ERROR ... EVENT_NEWLINE: 1709 default: 1710 die("unexpected type %d", type); 1711 } 1712 *tok = token; 1713 1714 return type; 1715 } 1716 1717 static int event_read_print_args(struct event *event, struct print_arg **list) 1718 { 1719 enum event_type type = EVENT_ERROR; 1720 struct print_arg *arg; 1721 char *token; 1722 int args = 0; 1723 1724 do { 1725 if (type == EVENT_NEWLINE) { 1726 free_token(token); 1727 type = read_token_item(&token); 1728 continue; 1729 } 1730 1731 arg = malloc_or_die(sizeof(*arg)); 1732 memset(arg, 0, sizeof(*arg)); 1733 1734 type = process_arg(event, arg, &token); 1735 1736 if (type == EVENT_ERROR) { 1737 free_arg(arg); 1738 return -1; 1739 } 1740 1741 *list = arg; 1742 args++; 1743 1744 if (type == EVENT_OP) { 1745 type = process_op(event, arg, &token); 1746 list = &arg->next; 1747 continue; 1748 } 1749 1750 if (type == EVENT_DELIM && strcmp(token, ",") == 0) { 1751 free_token(token); 1752 *list = arg; 1753 list = &arg->next; 1754 continue; 1755 } 1756 break; 1757 } while (type != EVENT_NONE); 1758 1759 if (type != EVENT_NONE) 1760 free_token(token); 1761 1762 return args; 1763 } 1764 1765 static int event_read_print(struct event *event) 1766 { 1767 enum event_type type; 1768 char *token; 1769 int ret; 1770 1771 if (read_expected_item(EVENT_ITEM, (char *)"print") < 0) 1772 return -1; 1773 1774 if (read_expected(EVENT_ITEM, (char *)"fmt") < 0) 1775 return -1; 1776 1777 if (read_expected(EVENT_OP, (char *)":") < 0) 1778 return -1; 1779 1780 if (read_expect_type(EVENT_DQUOTE, &token) < 0) 1781 goto fail; 1782 1783 concat: 1784 event->print_fmt.format = token; 1785 event->print_fmt.args = NULL; 1786 1787 /* ok to have no arg */ 1788 type = read_token_item(&token); 1789 1790 if (type == EVENT_NONE) 1791 return 0; 1792 1793 /* Handle concatination of print lines */ 1794 if (type == EVENT_DQUOTE) { 1795 char *cat; 1796 1797 cat = malloc_or_die(strlen(event->print_fmt.format) + 1798 strlen(token) + 1); 1799 strcpy(cat, event->print_fmt.format); 1800 strcat(cat, token); 1801 free_token(token); 1802 free_token(event->print_fmt.format); 1803 event->print_fmt.format = NULL; 1804 token = cat; 1805 goto concat; 1806 } 1807 1808 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1809 goto fail; 1810 1811 free_token(token); 1812 1813 ret = event_read_print_args(event, &event->print_fmt.args); 1814 if (ret < 0) 1815 return -1; 1816 1817 return 0; 1818 1819 fail: 1820 free_token(token); 1821 return -1; 1822 } 1823 1824 static struct format_field * 1825 find_common_field(struct event *event, const char *name) 1826 { 1827 struct format_field *format; 1828 1829 for (format = event->format.common_fields; 1830 format; format = format->next) { 1831 if (strcmp(format->name, name) == 0) 1832 break; 1833 } 1834 1835 return format; 1836 } 1837 1838 static struct format_field * 1839 find_field(struct event *event, const char *name) 1840 { 1841 struct format_field *format; 1842 1843 for (format = event->format.fields; 1844 format; format = format->next) { 1845 if (strcmp(format->name, name) == 0) 1846 break; 1847 } 1848 1849 return format; 1850 } 1851 1852 static struct format_field * 1853 find_any_field(struct event *event, const char *name) 1854 { 1855 struct format_field *format; 1856 1857 format = find_common_field(event, name); 1858 if (format) 1859 return format; 1860 return find_field(event, name); 1861 } 1862 1863 static unsigned long long read_size(void *ptr, int size) 1864 { 1865 switch (size) { 1866 case 1: 1867 return *(unsigned char *)ptr; 1868 case 2: 1869 return data2host2(ptr); 1870 case 4: 1871 return data2host4(ptr); 1872 case 8: 1873 return data2host8(ptr); 1874 default: 1875 /* BUG! */ 1876 return 0; 1877 } 1878 } 1879 1880 unsigned long long 1881 raw_field_value(struct event *event, const char *name, void *data) 1882 { 1883 struct format_field *field; 1884 1885 field = find_any_field(event, name); 1886 if (!field) 1887 return 0ULL; 1888 1889 return read_size(data + field->offset, field->size); 1890 } 1891 1892 void *raw_field_ptr(struct event *event, const char *name, void *data) 1893 { 1894 struct format_field *field; 1895 1896 field = find_any_field(event, name); 1897 if (!field) 1898 return NULL; 1899 1900 return data + field->offset; 1901 } 1902 1903 static int get_common_info(const char *type, int *offset, int *size) 1904 { 1905 struct event *event; 1906 struct format_field *field; 1907 1908 /* 1909 * All events should have the same common elements. 1910 * Pick any event to find where the type is; 1911 */ 1912 if (!event_list) 1913 die("no event_list!"); 1914 1915 event = event_list; 1916 field = find_common_field(event, type); 1917 if (!field) 1918 die("field '%s' not found", type); 1919 1920 *offset = field->offset; 1921 *size = field->size; 1922 1923 return 0; 1924 } 1925 1926 int trace_parse_common_type(void *data) 1927 { 1928 static int type_offset; 1929 static int type_size; 1930 int ret; 1931 1932 if (!type_size) { 1933 ret = get_common_info("common_type", 1934 &type_offset, 1935 &type_size); 1936 if (ret < 0) 1937 return ret; 1938 } 1939 return read_size(data + type_offset, type_size); 1940 } 1941 1942 static int parse_common_pid(void *data) 1943 { 1944 static int pid_offset; 1945 static int pid_size; 1946 int ret; 1947 1948 if (!pid_size) { 1949 ret = get_common_info("common_pid", 1950 &pid_offset, 1951 &pid_size); 1952 if (ret < 0) 1953 return ret; 1954 } 1955 1956 return read_size(data + pid_offset, pid_size); 1957 } 1958 1959 struct event *trace_find_event(int id) 1960 { 1961 struct event *event; 1962 1963 for (event = event_list; event; event = event->next) { 1964 if (event->id == id) 1965 break; 1966 } 1967 return event; 1968 } 1969 1970 static unsigned long long eval_num_arg(void *data, int size, 1971 struct event *event, struct print_arg *arg) 1972 { 1973 unsigned long long val = 0; 1974 unsigned long long left, right; 1975 struct print_arg *larg; 1976 1977 switch (arg->type) { 1978 case PRINT_NULL: 1979 /* ?? */ 1980 return 0; 1981 case PRINT_ATOM: 1982 return strtoull(arg->atom.atom, NULL, 0); 1983 case PRINT_FIELD: 1984 if (!arg->field.field) { 1985 arg->field.field = find_any_field(event, arg->field.name); 1986 if (!arg->field.field) 1987 die("field %s not found", arg->field.name); 1988 } 1989 /* must be a number */ 1990 val = read_size(data + arg->field.field->offset, 1991 arg->field.field->size); 1992 break; 1993 case PRINT_FLAGS: 1994 case PRINT_SYMBOL: 1995 break; 1996 case PRINT_TYPE: 1997 return eval_num_arg(data, size, event, arg->typecast.item); 1998 case PRINT_STRING: 1999 return 0; 2000 break; 2001 case PRINT_OP: 2002 if (strcmp(arg->op.op, "[") == 0) { 2003 /* 2004 * Arrays are special, since we don't want 2005 * to read the arg as is. 2006 */ 2007 if (arg->op.left->type != PRINT_FIELD) 2008 goto default_op; /* oops, all bets off */ 2009 larg = arg->op.left; 2010 if (!larg->field.field) { 2011 larg->field.field = 2012 find_any_field(event, larg->field.name); 2013 if (!larg->field.field) 2014 die("field %s not found", larg->field.name); 2015 } 2016 right = eval_num_arg(data, size, event, arg->op.right); 2017 val = read_size(data + larg->field.field->offset + 2018 right * long_size, long_size); 2019 break; 2020 } 2021 default_op: 2022 left = eval_num_arg(data, size, event, arg->op.left); 2023 right = eval_num_arg(data, size, event, arg->op.right); 2024 switch (arg->op.op[0]) { 2025 case '|': 2026 if (arg->op.op[1]) 2027 val = left || right; 2028 else 2029 val = left | right; 2030 break; 2031 case '&': 2032 if (arg->op.op[1]) 2033 val = left && right; 2034 else 2035 val = left & right; 2036 break; 2037 case '<': 2038 switch (arg->op.op[1]) { 2039 case 0: 2040 val = left < right; 2041 break; 2042 case '<': 2043 val = left << right; 2044 break; 2045 case '=': 2046 val = left <= right; 2047 break; 2048 default: 2049 die("unknown op '%s'", arg->op.op); 2050 } 2051 break; 2052 case '>': 2053 switch (arg->op.op[1]) { 2054 case 0: 2055 val = left > right; 2056 break; 2057 case '>': 2058 val = left >> right; 2059 break; 2060 case '=': 2061 val = left >= right; 2062 break; 2063 default: 2064 die("unknown op '%s'", arg->op.op); 2065 } 2066 break; 2067 case '=': 2068 if (arg->op.op[1] != '=') 2069 die("unknown op '%s'", arg->op.op); 2070 val = left == right; 2071 break; 2072 default: 2073 die("unknown op '%s'", arg->op.op); 2074 } 2075 break; 2076 default: /* not sure what to do there */ 2077 return 0; 2078 } 2079 return val; 2080 } 2081 2082 struct flag { 2083 const char *name; 2084 unsigned long long value; 2085 }; 2086 2087 static const struct flag flags[] = { 2088 { "HI_SOFTIRQ", 0 }, 2089 { "TIMER_SOFTIRQ", 1 }, 2090 { "NET_TX_SOFTIRQ", 2 }, 2091 { "NET_RX_SOFTIRQ", 3 }, 2092 { "BLOCK_SOFTIRQ", 4 }, 2093 { "BLOCK_IOPOLL_SOFTIRQ", 5 }, 2094 { "TASKLET_SOFTIRQ", 6 }, 2095 { "SCHED_SOFTIRQ", 7 }, 2096 { "HRTIMER_SOFTIRQ", 8 }, 2097 { "RCU_SOFTIRQ", 9 }, 2098 2099 { "HRTIMER_NORESTART", 0 }, 2100 { "HRTIMER_RESTART", 1 }, 2101 }; 2102 2103 static unsigned long long eval_flag(const char *flag) 2104 { 2105 int i; 2106 2107 /* 2108 * Some flags in the format files do not get converted. 2109 * If the flag is not numeric, see if it is something that 2110 * we already know about. 2111 */ 2112 if (isdigit(flag[0])) 2113 return strtoull(flag, NULL, 0); 2114 2115 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) 2116 if (strcmp(flags[i].name, flag) == 0) 2117 return flags[i].value; 2118 2119 return 0; 2120 } 2121 2122 static void print_str_arg(void *data, int size, 2123 struct event *event, struct print_arg *arg) 2124 { 2125 struct print_flag_sym *flag; 2126 unsigned long long val, fval; 2127 char *str; 2128 int print; 2129 2130 switch (arg->type) { 2131 case PRINT_NULL: 2132 /* ?? */ 2133 return; 2134 case PRINT_ATOM: 2135 printf("%s", arg->atom.atom); 2136 return; 2137 case PRINT_FIELD: 2138 if (!arg->field.field) { 2139 arg->field.field = find_any_field(event, arg->field.name); 2140 if (!arg->field.field) 2141 die("field %s not found", arg->field.name); 2142 } 2143 str = malloc_or_die(arg->field.field->size + 1); 2144 memcpy(str, data + arg->field.field->offset, 2145 arg->field.field->size); 2146 str[arg->field.field->size] = 0; 2147 printf("%s", str); 2148 free(str); 2149 break; 2150 case PRINT_FLAGS: 2151 val = eval_num_arg(data, size, event, arg->flags.field); 2152 print = 0; 2153 for (flag = arg->flags.flags; flag; flag = flag->next) { 2154 fval = eval_flag(flag->value); 2155 if (!val && !fval) { 2156 printf("%s", flag->str); 2157 break; 2158 } 2159 if (fval && (val & fval) == fval) { 2160 if (print && arg->flags.delim) 2161 printf("%s", arg->flags.delim); 2162 printf("%s", flag->str); 2163 print = 1; 2164 val &= ~fval; 2165 } 2166 } 2167 break; 2168 case PRINT_SYMBOL: 2169 val = eval_num_arg(data, size, event, arg->symbol.field); 2170 for (flag = arg->symbol.symbols; flag; flag = flag->next) { 2171 fval = eval_flag(flag->value); 2172 if (val == fval) { 2173 printf("%s", flag->str); 2174 break; 2175 } 2176 } 2177 break; 2178 2179 case PRINT_TYPE: 2180 break; 2181 case PRINT_STRING: { 2182 int str_offset; 2183 2184 if (arg->string.offset == -1) { 2185 struct format_field *f; 2186 2187 f = find_any_field(event, arg->string.string); 2188 arg->string.offset = f->offset; 2189 } 2190 str_offset = *(int *)(data + arg->string.offset); 2191 str_offset &= 0xffff; 2192 printf("%s", ((char *)data) + str_offset); 2193 break; 2194 } 2195 case PRINT_OP: 2196 /* 2197 * The only op for string should be ? : 2198 */ 2199 if (arg->op.op[0] != '?') 2200 return; 2201 val = eval_num_arg(data, size, event, arg->op.left); 2202 if (val) 2203 print_str_arg(data, size, event, arg->op.right->op.left); 2204 else 2205 print_str_arg(data, size, event, arg->op.right->op.right); 2206 break; 2207 default: 2208 /* well... */ 2209 break; 2210 } 2211 } 2212 2213 static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event *event) 2214 { 2215 static struct format_field *field, *ip_field; 2216 struct print_arg *args, *arg, **next; 2217 unsigned long long ip, val; 2218 char *ptr; 2219 void *bptr; 2220 2221 if (!field) { 2222 field = find_field(event, "buf"); 2223 if (!field) 2224 die("can't find buffer field for binary printk"); 2225 ip_field = find_field(event, "ip"); 2226 if (!ip_field) 2227 die("can't find ip field for binary printk"); 2228 } 2229 2230 ip = read_size(data + ip_field->offset, ip_field->size); 2231 2232 /* 2233 * The first arg is the IP pointer. 2234 */ 2235 args = malloc_or_die(sizeof(*args)); 2236 arg = args; 2237 arg->next = NULL; 2238 next = &arg->next; 2239 2240 arg->type = PRINT_ATOM; 2241 arg->atom.atom = malloc_or_die(32); 2242 sprintf(arg->atom.atom, "%lld", ip); 2243 2244 /* skip the first "%pf : " */ 2245 for (ptr = fmt + 6, bptr = data + field->offset; 2246 bptr < data + size && *ptr; ptr++) { 2247 int ls = 0; 2248 2249 if (*ptr == '%') { 2250 process_again: 2251 ptr++; 2252 switch (*ptr) { 2253 case '%': 2254 break; 2255 case 'l': 2256 ls++; 2257 goto process_again; 2258 case 'L': 2259 ls = 2; 2260 goto process_again; 2261 case '0' ... '9': 2262 goto process_again; 2263 case 'p': 2264 ls = 1; 2265 /* fall through */ 2266 case 'd': 2267 case 'u': 2268 case 'x': 2269 case 'i': 2270 bptr = (void *)(((unsigned long)bptr + (long_size - 1)) & 2271 ~(long_size - 1)); 2272 switch (ls) { 2273 case 0: 2274 case 1: 2275 ls = long_size; 2276 break; 2277 case 2: 2278 ls = 8; 2279 default: 2280 break; 2281 } 2282 val = read_size(bptr, ls); 2283 bptr += ls; 2284 arg = malloc_or_die(sizeof(*arg)); 2285 arg->next = NULL; 2286 arg->type = PRINT_ATOM; 2287 arg->atom.atom = malloc_or_die(32); 2288 sprintf(arg->atom.atom, "%lld", val); 2289 *next = arg; 2290 next = &arg->next; 2291 break; 2292 case 's': 2293 arg = malloc_or_die(sizeof(*arg)); 2294 arg->next = NULL; 2295 arg->type = PRINT_STRING; 2296 arg->string.string = strdup(bptr); 2297 bptr += strlen(bptr) + 1; 2298 *next = arg; 2299 next = &arg->next; 2300 default: 2301 break; 2302 } 2303 } 2304 } 2305 2306 return args; 2307 } 2308 2309 static void free_args(struct print_arg *args) 2310 { 2311 struct print_arg *next; 2312 2313 while (args) { 2314 next = args->next; 2315 2316 if (args->type == PRINT_ATOM) 2317 free(args->atom.atom); 2318 else 2319 free(args->string.string); 2320 free(args); 2321 args = next; 2322 } 2323 } 2324 2325 static char *get_bprint_format(void *data, int size __unused, struct event *event) 2326 { 2327 unsigned long long addr; 2328 static struct format_field *field; 2329 struct printk_map *printk; 2330 char *format; 2331 char *p; 2332 2333 if (!field) { 2334 field = find_field(event, "fmt"); 2335 if (!field) 2336 die("can't find format field for binary printk"); 2337 printf("field->offset = %d size=%d\n", field->offset, field->size); 2338 } 2339 2340 addr = read_size(data + field->offset, field->size); 2341 2342 printk = find_printk(addr); 2343 if (!printk) { 2344 format = malloc_or_die(45); 2345 sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n", 2346 addr); 2347 return format; 2348 } 2349 2350 p = printk->printk; 2351 /* Remove any quotes. */ 2352 if (*p == '"') 2353 p++; 2354 format = malloc_or_die(strlen(p) + 10); 2355 sprintf(format, "%s : %s", "%pf", p); 2356 /* remove ending quotes and new line since we will add one too */ 2357 p = format + strlen(format) - 1; 2358 if (*p == '"') 2359 *p = 0; 2360 2361 p -= 2; 2362 if (strcmp(p, "\\n") == 0) 2363 *p = 0; 2364 2365 return format; 2366 } 2367 2368 static void pretty_print(void *data, int size, struct event *event) 2369 { 2370 struct print_fmt *print_fmt = &event->print_fmt; 2371 struct print_arg *arg = print_fmt->args; 2372 struct print_arg *args = NULL; 2373 const char *ptr = print_fmt->format; 2374 unsigned long long val; 2375 struct func_map *func; 2376 const char *saveptr; 2377 char *bprint_fmt = NULL; 2378 char format[32]; 2379 int show_func; 2380 int len; 2381 int ls; 2382 2383 if (event->flags & EVENT_FL_ISFUNC) 2384 ptr = " %pF <-- %pF"; 2385 2386 if (event->flags & EVENT_FL_ISBPRINT) { 2387 bprint_fmt = get_bprint_format(data, size, event); 2388 args = make_bprint_args(bprint_fmt, data, size, event); 2389 arg = args; 2390 ptr = bprint_fmt; 2391 } 2392 2393 for (; *ptr; ptr++) { 2394 ls = 0; 2395 if (*ptr == '\\') { 2396 ptr++; 2397 switch (*ptr) { 2398 case 'n': 2399 printf("\n"); 2400 break; 2401 case 't': 2402 printf("\t"); 2403 break; 2404 case 'r': 2405 printf("\r"); 2406 break; 2407 case '\\': 2408 printf("\\"); 2409 break; 2410 default: 2411 printf("%c", *ptr); 2412 break; 2413 } 2414 2415 } else if (*ptr == '%') { 2416 saveptr = ptr; 2417 show_func = 0; 2418 cont_process: 2419 ptr++; 2420 switch (*ptr) { 2421 case '%': 2422 printf("%%"); 2423 break; 2424 case 'l': 2425 ls++; 2426 goto cont_process; 2427 case 'L': 2428 ls = 2; 2429 goto cont_process; 2430 case 'z': 2431 case 'Z': 2432 case '0' ... '9': 2433 goto cont_process; 2434 case 'p': 2435 if (long_size == 4) 2436 ls = 1; 2437 else 2438 ls = 2; 2439 2440 if (*(ptr+1) == 'F' || 2441 *(ptr+1) == 'f') { 2442 ptr++; 2443 show_func = *ptr; 2444 } 2445 2446 /* fall through */ 2447 case 'd': 2448 case 'i': 2449 case 'x': 2450 case 'X': 2451 case 'u': 2452 if (!arg) 2453 die("no argument match"); 2454 2455 len = ((unsigned long)ptr + 1) - 2456 (unsigned long)saveptr; 2457 2458 /* should never happen */ 2459 if (len > 32) 2460 die("bad format!"); 2461 2462 memcpy(format, saveptr, len); 2463 format[len] = 0; 2464 2465 val = eval_num_arg(data, size, event, arg); 2466 arg = arg->next; 2467 2468 if (show_func) { 2469 func = find_func(val); 2470 if (func) { 2471 printf("%s", func->func); 2472 if (show_func == 'F') 2473 printf("+0x%llx", 2474 val - func->addr); 2475 break; 2476 } 2477 } 2478 switch (ls) { 2479 case 0: 2480 printf(format, (int)val); 2481 break; 2482 case 1: 2483 printf(format, (long)val); 2484 break; 2485 case 2: 2486 printf(format, (long long)val); 2487 break; 2488 default: 2489 die("bad count (%d)", ls); 2490 } 2491 break; 2492 case 's': 2493 if (!arg) 2494 die("no matching argument"); 2495 2496 print_str_arg(data, size, event, arg); 2497 arg = arg->next; 2498 break; 2499 default: 2500 printf(">%c<", *ptr); 2501 2502 } 2503 } else 2504 printf("%c", *ptr); 2505 } 2506 2507 if (args) { 2508 free_args(args); 2509 free(bprint_fmt); 2510 } 2511 } 2512 2513 static inline int log10_cpu(int nb) 2514 { 2515 if (nb / 100) 2516 return 3; 2517 if (nb / 10) 2518 return 2; 2519 return 1; 2520 } 2521 2522 /* taken from Linux, written by Frederic Weisbecker */ 2523 static void print_graph_cpu(int cpu) 2524 { 2525 int i; 2526 int log10_this = log10_cpu(cpu); 2527 int log10_all = log10_cpu(cpus); 2528 2529 2530 /* 2531 * Start with a space character - to make it stand out 2532 * to the right a bit when trace output is pasted into 2533 * email: 2534 */ 2535 printf(" "); 2536 2537 /* 2538 * Tricky - we space the CPU field according to the max 2539 * number of online CPUs. On a 2-cpu system it would take 2540 * a maximum of 1 digit - on a 128 cpu system it would 2541 * take up to 3 digits: 2542 */ 2543 for (i = 0; i < log10_all - log10_this; i++) 2544 printf(" "); 2545 2546 printf("%d) ", cpu); 2547 } 2548 2549 #define TRACE_GRAPH_PROCINFO_LENGTH 14 2550 #define TRACE_GRAPH_INDENT 2 2551 2552 static void print_graph_proc(int pid, const char *comm) 2553 { 2554 /* sign + log10(MAX_INT) + '\0' */ 2555 char pid_str[11]; 2556 int spaces = 0; 2557 int len; 2558 int i; 2559 2560 sprintf(pid_str, "%d", pid); 2561 2562 /* 1 stands for the "-" character */ 2563 len = strlen(comm) + strlen(pid_str) + 1; 2564 2565 if (len < TRACE_GRAPH_PROCINFO_LENGTH) 2566 spaces = TRACE_GRAPH_PROCINFO_LENGTH - len; 2567 2568 /* First spaces to align center */ 2569 for (i = 0; i < spaces / 2; i++) 2570 printf(" "); 2571 2572 printf("%s-%s", comm, pid_str); 2573 2574 /* Last spaces to align center */ 2575 for (i = 0; i < spaces - (spaces / 2); i++) 2576 printf(" "); 2577 } 2578 2579 static struct record * 2580 get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func, 2581 struct record *next) 2582 { 2583 struct format_field *field; 2584 struct event *event; 2585 unsigned long val; 2586 int type; 2587 int pid; 2588 2589 type = trace_parse_common_type(next->data); 2590 event = trace_find_event(type); 2591 if (!event) 2592 return NULL; 2593 2594 if (!(event->flags & EVENT_FL_ISFUNCRET)) 2595 return NULL; 2596 2597 pid = parse_common_pid(next->data); 2598 field = find_field(event, "func"); 2599 if (!field) 2600 die("function return does not have field func"); 2601 2602 val = read_size(next->data + field->offset, field->size); 2603 2604 if (cur_pid != pid || cur_func != val) 2605 return NULL; 2606 2607 /* this is a leaf, now advance the iterator */ 2608 return trace_read_data(cpu); 2609 } 2610 2611 /* Signal a overhead of time execution to the output */ 2612 static void print_graph_overhead(unsigned long long duration) 2613 { 2614 /* Non nested entry or return */ 2615 if (duration == ~0ULL) 2616 return (void)printf(" "); 2617 2618 /* Duration exceeded 100 msecs */ 2619 if (duration > 100000ULL) 2620 return (void)printf("! "); 2621 2622 /* Duration exceeded 10 msecs */ 2623 if (duration > 10000ULL) 2624 return (void)printf("+ "); 2625 2626 printf(" "); 2627 } 2628 2629 static void print_graph_duration(unsigned long long duration) 2630 { 2631 unsigned long usecs = duration / 1000; 2632 unsigned long nsecs_rem = duration % 1000; 2633 /* log10(ULONG_MAX) + '\0' */ 2634 char msecs_str[21]; 2635 char nsecs_str[5]; 2636 int len; 2637 int i; 2638 2639 sprintf(msecs_str, "%lu", usecs); 2640 2641 /* Print msecs */ 2642 len = printf("%lu", usecs); 2643 2644 /* Print nsecs (we don't want to exceed 7 numbers) */ 2645 if (len < 7) { 2646 snprintf(nsecs_str, 8 - len, "%03lu", nsecs_rem); 2647 len += printf(".%s", nsecs_str); 2648 } 2649 2650 printf(" us "); 2651 2652 /* Print remaining spaces to fit the row's width */ 2653 for (i = len; i < 7; i++) 2654 printf(" "); 2655 2656 printf("| "); 2657 } 2658 2659 static void 2660 print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec) 2661 { 2662 unsigned long long rettime, calltime; 2663 unsigned long long duration, depth; 2664 unsigned long long val; 2665 struct format_field *field; 2666 struct func_map *func; 2667 struct event *ret_event; 2668 int type; 2669 int i; 2670 2671 type = trace_parse_common_type(ret_rec->data); 2672 ret_event = trace_find_event(type); 2673 2674 field = find_field(ret_event, "rettime"); 2675 if (!field) 2676 die("can't find rettime in return graph"); 2677 rettime = read_size(ret_rec->data + field->offset, field->size); 2678 2679 field = find_field(ret_event, "calltime"); 2680 if (!field) 2681 die("can't find rettime in return graph"); 2682 calltime = read_size(ret_rec->data + field->offset, field->size); 2683 2684 duration = rettime - calltime; 2685 2686 /* Overhead */ 2687 print_graph_overhead(duration); 2688 2689 /* Duration */ 2690 print_graph_duration(duration); 2691 2692 field = find_field(event, "depth"); 2693 if (!field) 2694 die("can't find depth in entry graph"); 2695 depth = read_size(data + field->offset, field->size); 2696 2697 /* Function */ 2698 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) 2699 printf(" "); 2700 2701 field = find_field(event, "func"); 2702 if (!field) 2703 die("can't find func in entry graph"); 2704 val = read_size(data + field->offset, field->size); 2705 func = find_func(val); 2706 2707 if (func) 2708 printf("%s();", func->func); 2709 else 2710 printf("%llx();", val); 2711 } 2712 2713 static void print_graph_nested(struct event *event, void *data) 2714 { 2715 struct format_field *field; 2716 unsigned long long depth; 2717 unsigned long long val; 2718 struct func_map *func; 2719 int i; 2720 2721 /* No overhead */ 2722 print_graph_overhead(-1); 2723 2724 /* No time */ 2725 printf(" | "); 2726 2727 field = find_field(event, "depth"); 2728 if (!field) 2729 die("can't find depth in entry graph"); 2730 depth = read_size(data + field->offset, field->size); 2731 2732 /* Function */ 2733 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) 2734 printf(" "); 2735 2736 field = find_field(event, "func"); 2737 if (!field) 2738 die("can't find func in entry graph"); 2739 val = read_size(data + field->offset, field->size); 2740 func = find_func(val); 2741 2742 if (func) 2743 printf("%s() {", func->func); 2744 else 2745 printf("%llx() {", val); 2746 } 2747 2748 static void 2749 pretty_print_func_ent(void *data, int size, struct event *event, 2750 int cpu, int pid, const char *comm, 2751 unsigned long secs, unsigned long usecs) 2752 { 2753 struct format_field *field; 2754 struct record *rec; 2755 void *copy_data; 2756 unsigned long val; 2757 2758 printf("%5lu.%06lu | ", secs, usecs); 2759 2760 print_graph_cpu(cpu); 2761 print_graph_proc(pid, comm); 2762 2763 printf(" | "); 2764 2765 field = find_field(event, "func"); 2766 if (!field) 2767 die("function entry does not have func field"); 2768 2769 val = read_size(data + field->offset, field->size); 2770 2771 /* 2772 * peek_data may unmap the data pointer. Copy it first. 2773 */ 2774 copy_data = malloc_or_die(size); 2775 memcpy(copy_data, data, size); 2776 data = copy_data; 2777 2778 rec = trace_peek_data(cpu); 2779 if (rec) { 2780 rec = get_return_for_leaf(cpu, pid, val, rec); 2781 if (rec) { 2782 print_graph_entry_leaf(event, data, rec); 2783 goto out_free; 2784 } 2785 } 2786 print_graph_nested(event, data); 2787 out_free: 2788 free(data); 2789 } 2790 2791 static void 2792 pretty_print_func_ret(void *data, int size __unused, struct event *event, 2793 int cpu, int pid, const char *comm, 2794 unsigned long secs, unsigned long usecs) 2795 { 2796 unsigned long long rettime, calltime; 2797 unsigned long long duration, depth; 2798 struct format_field *field; 2799 int i; 2800 2801 printf("%5lu.%06lu | ", secs, usecs); 2802 2803 print_graph_cpu(cpu); 2804 print_graph_proc(pid, comm); 2805 2806 printf(" | "); 2807 2808 field = find_field(event, "rettime"); 2809 if (!field) 2810 die("can't find rettime in return graph"); 2811 rettime = read_size(data + field->offset, field->size); 2812 2813 field = find_field(event, "calltime"); 2814 if (!field) 2815 die("can't find calltime in return graph"); 2816 calltime = read_size(data + field->offset, field->size); 2817 2818 duration = rettime - calltime; 2819 2820 /* Overhead */ 2821 print_graph_overhead(duration); 2822 2823 /* Duration */ 2824 print_graph_duration(duration); 2825 2826 field = find_field(event, "depth"); 2827 if (!field) 2828 die("can't find depth in entry graph"); 2829 depth = read_size(data + field->offset, field->size); 2830 2831 /* Function */ 2832 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) 2833 printf(" "); 2834 2835 printf("}"); 2836 } 2837 2838 static void 2839 pretty_print_func_graph(void *data, int size, struct event *event, 2840 int cpu, int pid, const char *comm, 2841 unsigned long secs, unsigned long usecs) 2842 { 2843 if (event->flags & EVENT_FL_ISFUNCENT) 2844 pretty_print_func_ent(data, size, event, 2845 cpu, pid, comm, secs, usecs); 2846 else if (event->flags & EVENT_FL_ISFUNCRET) 2847 pretty_print_func_ret(data, size, event, 2848 cpu, pid, comm, secs, usecs); 2849 printf("\n"); 2850 } 2851 2852 void print_event(int cpu, void *data, int size, unsigned long long nsecs, 2853 char *comm) 2854 { 2855 struct event *event; 2856 unsigned long secs; 2857 unsigned long usecs; 2858 int type; 2859 int pid; 2860 2861 secs = nsecs / NSECS_PER_SEC; 2862 nsecs -= secs * NSECS_PER_SEC; 2863 usecs = nsecs / NSECS_PER_USEC; 2864 2865 type = trace_parse_common_type(data); 2866 2867 event = trace_find_event(type); 2868 if (!event) { 2869 printf("ug! no event found for type %d\n", type); 2870 return; 2871 } 2872 2873 pid = parse_common_pid(data); 2874 2875 if (event->flags & (EVENT_FL_ISFUNCENT | EVENT_FL_ISFUNCRET)) 2876 return pretty_print_func_graph(data, size, event, cpu, 2877 pid, comm, secs, usecs); 2878 2879 printf("%16s-%-5d [%03d] %5lu.%09Lu: %s: ", 2880 comm, pid, cpu, 2881 secs, nsecs, event->name); 2882 2883 pretty_print(data, size, event); 2884 printf("\n"); 2885 } 2886 2887 static void print_fields(struct print_flag_sym *field) 2888 { 2889 printf("{ %s, %s }", field->value, field->str); 2890 if (field->next) { 2891 printf(", "); 2892 print_fields(field->next); 2893 } 2894 } 2895 2896 static void print_args(struct print_arg *args) 2897 { 2898 int print_paren = 1; 2899 2900 switch (args->type) { 2901 case PRINT_NULL: 2902 printf("null"); 2903 break; 2904 case PRINT_ATOM: 2905 printf("%s", args->atom.atom); 2906 break; 2907 case PRINT_FIELD: 2908 printf("REC->%s", args->field.name); 2909 break; 2910 case PRINT_FLAGS: 2911 printf("__print_flags("); 2912 print_args(args->flags.field); 2913 printf(", %s, ", args->flags.delim); 2914 print_fields(args->flags.flags); 2915 printf(")"); 2916 break; 2917 case PRINT_SYMBOL: 2918 printf("__print_symbolic("); 2919 print_args(args->symbol.field); 2920 printf(", "); 2921 print_fields(args->symbol.symbols); 2922 printf(")"); 2923 break; 2924 case PRINT_STRING: 2925 printf("__get_str(%s)", args->string.string); 2926 break; 2927 case PRINT_TYPE: 2928 printf("(%s)", args->typecast.type); 2929 print_args(args->typecast.item); 2930 break; 2931 case PRINT_OP: 2932 if (strcmp(args->op.op, ":") == 0) 2933 print_paren = 0; 2934 if (print_paren) 2935 printf("("); 2936 print_args(args->op.left); 2937 printf(" %s ", args->op.op); 2938 print_args(args->op.right); 2939 if (print_paren) 2940 printf(")"); 2941 break; 2942 default: 2943 /* we should warn... */ 2944 return; 2945 } 2946 if (args->next) { 2947 printf("\n"); 2948 print_args(args->next); 2949 } 2950 } 2951 2952 static void parse_header_field(char *type, 2953 int *offset, int *size) 2954 { 2955 char *token; 2956 2957 if (read_expected(EVENT_ITEM, (char *)"field") < 0) 2958 return; 2959 if (read_expected(EVENT_OP, (char *)":") < 0) 2960 return; 2961 /* type */ 2962 if (read_expect_type(EVENT_ITEM, &token) < 0) 2963 return; 2964 free_token(token); 2965 2966 if (read_expected(EVENT_ITEM, type) < 0) 2967 return; 2968 if (read_expected(EVENT_OP, (char *)";") < 0) 2969 return; 2970 if (read_expected(EVENT_ITEM, (char *)"offset") < 0) 2971 return; 2972 if (read_expected(EVENT_OP, (char *)":") < 0) 2973 return; 2974 if (read_expect_type(EVENT_ITEM, &token) < 0) 2975 return; 2976 *offset = atoi(token); 2977 free_token(token); 2978 if (read_expected(EVENT_OP, (char *)";") < 0) 2979 return; 2980 if (read_expected(EVENT_ITEM, (char *)"size") < 0) 2981 return; 2982 if (read_expected(EVENT_OP, (char *)":") < 0) 2983 return; 2984 if (read_expect_type(EVENT_ITEM, &token) < 0) 2985 return; 2986 *size = atoi(token); 2987 free_token(token); 2988 if (read_expected(EVENT_OP, (char *)";") < 0) 2989 return; 2990 if (read_expected(EVENT_ITEM, (char *)"signed") < 0) 2991 return; 2992 if (read_expected(EVENT_OP, (char *)":") < 0) 2993 return; 2994 if (read_expect_type(EVENT_ITEM, &token) < 0) 2995 return; 2996 free_token(token); 2997 if (read_expected(EVENT_OP, (char *)";") < 0) 2998 return; 2999 if (read_expect_type(EVENT_NEWLINE, &token) < 0) 3000 return; 3001 free_token(token); 3002 } 3003 3004 int parse_header_page(char *buf, unsigned long size) 3005 { 3006 init_input_buf(buf, size); 3007 3008 parse_header_field((char *)"timestamp", &header_page_ts_offset, 3009 &header_page_ts_size); 3010 parse_header_field((char *)"commit", &header_page_size_offset, 3011 &header_page_size_size); 3012 parse_header_field((char *)"data", &header_page_data_offset, 3013 &header_page_data_size); 3014 3015 return 0; 3016 } 3017 3018 int parse_ftrace_file(char *buf, unsigned long size) 3019 { 3020 struct format_field *field; 3021 struct print_arg *arg, **list; 3022 struct event *event; 3023 int ret; 3024 3025 init_input_buf(buf, size); 3026 3027 event = alloc_event(); 3028 if (!event) 3029 return -ENOMEM; 3030 3031 event->flags |= EVENT_FL_ISFTRACE; 3032 3033 event->name = event_read_name(); 3034 if (!event->name) 3035 die("failed to read ftrace event name"); 3036 3037 if (strcmp(event->name, "function") == 0) 3038 event->flags |= EVENT_FL_ISFUNC; 3039 3040 else if (strcmp(event->name, "funcgraph_entry") == 0) 3041 event->flags |= EVENT_FL_ISFUNCENT; 3042 3043 else if (strcmp(event->name, "funcgraph_exit") == 0) 3044 event->flags |= EVENT_FL_ISFUNCRET; 3045 3046 else if (strcmp(event->name, "bprint") == 0) 3047 event->flags |= EVENT_FL_ISBPRINT; 3048 3049 event->id = event_read_id(); 3050 if (event->id < 0) 3051 die("failed to read ftrace event id"); 3052 3053 add_event(event); 3054 3055 ret = event_read_format(event); 3056 if (ret < 0) 3057 die("failed to read ftrace event format"); 3058 3059 ret = event_read_print(event); 3060 if (ret < 0) 3061 die("failed to read ftrace event print fmt"); 3062 3063 /* 3064 * The arguments for ftrace files are parsed by the fields. 3065 * Set up the fields as their arguments. 3066 */ 3067 list = &event->print_fmt.args; 3068 for (field = event->format.fields; field; field = field->next) { 3069 arg = malloc_or_die(sizeof(*arg)); 3070 memset(arg, 0, sizeof(*arg)); 3071 *list = arg; 3072 list = &arg->next; 3073 arg->type = PRINT_FIELD; 3074 arg->field.name = field->name; 3075 arg->field.field = field; 3076 } 3077 return 0; 3078 } 3079 3080 int parse_event_file(char *buf, unsigned long size, char *sys) 3081 { 3082 struct event *event; 3083 int ret; 3084 3085 init_input_buf(buf, size); 3086 3087 event = alloc_event(); 3088 if (!event) 3089 return -ENOMEM; 3090 3091 event->name = event_read_name(); 3092 if (!event->name) 3093 die("failed to read event name"); 3094 3095 event->id = event_read_id(); 3096 if (event->id < 0) 3097 die("failed to read event id"); 3098 3099 ret = event_read_format(event); 3100 if (ret < 0) 3101 die("failed to read event format"); 3102 3103 ret = event_read_print(event); 3104 if (ret < 0) 3105 die("failed to read event print fmt"); 3106 3107 event->system = strdup(sys); 3108 3109 #define PRINT_ARGS 0 3110 if (PRINT_ARGS && event->print_fmt.args) 3111 print_args(event->print_fmt.args); 3112 3113 add_event(event); 3114 return 0; 3115 } 3116 3117 void parse_set_info(int nr_cpus, int long_sz) 3118 { 3119 cpus = nr_cpus; 3120 long_size = long_sz; 3121 } 3122