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