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 *)&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 *)&addr_str, /* workaround gcc warning */ 156 &ch, 157 (float *)&item->func, 158 (float *)&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 *)&addr_str, /* workaround gcc warning */ 295 (float *)&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 } while (ch != quote_ch && last_ch != '\\'); 526 /* remove the last quote */ 527 i--; 528 goto out; 529 530 case EVENT_ERROR ... EVENT_SPACE: 531 case EVENT_ITEM: 532 default: 533 break; 534 } 535 536 while (get_type(__peek_char()) == type) { 537 if (i == (BUFSIZ - 1)) { 538 buf[i] = 0; 539 if (*tok) { 540 *tok = realloc(*tok, tok_size + BUFSIZ); 541 if (!*tok) 542 return EVENT_NONE; 543 strcat(*tok, buf); 544 } else 545 *tok = strdup(buf); 546 547 if (!*tok) 548 return EVENT_NONE; 549 tok_size += BUFSIZ; 550 i = 0; 551 } 552 ch = __read_char(); 553 buf[i++] = ch; 554 } 555 556 out: 557 buf[i] = 0; 558 if (*tok) { 559 *tok = realloc(*tok, tok_size + i); 560 if (!*tok) 561 return EVENT_NONE; 562 strcat(*tok, buf); 563 } else 564 *tok = strdup(buf); 565 if (!*tok) 566 return EVENT_NONE; 567 568 return type; 569 } 570 571 static void free_token(char *tok) 572 { 573 if (tok) 574 free(tok); 575 } 576 577 static enum event_type read_token(char **tok) 578 { 579 enum event_type type; 580 581 for (;;) { 582 type = __read_token(tok); 583 if (type != EVENT_SPACE) 584 return type; 585 586 free_token(*tok); 587 } 588 589 /* not reached */ 590 return EVENT_NONE; 591 } 592 593 /* no newline */ 594 static enum event_type read_token_item(char **tok) 595 { 596 enum event_type type; 597 598 for (;;) { 599 type = __read_token(tok); 600 if (type != EVENT_SPACE && type != EVENT_NEWLINE) 601 return type; 602 603 free_token(*tok); 604 } 605 606 /* not reached */ 607 return EVENT_NONE; 608 } 609 610 static int test_type(enum event_type type, enum event_type expect) 611 { 612 if (type != expect) { 613 die("Error: expected type %d but read %d", 614 expect, type); 615 return -1; 616 } 617 return 0; 618 } 619 620 static int test_type_token(enum event_type type, char *token, 621 enum event_type expect, char *expect_tok) 622 { 623 if (type != expect) { 624 die("Error: expected type %d but read %d", 625 expect, type); 626 return -1; 627 } 628 629 if (strcmp(token, expect_tok) != 0) { 630 die("Error: expected '%s' but read '%s'", 631 expect_tok, token); 632 return -1; 633 } 634 return 0; 635 } 636 637 static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) 638 { 639 enum event_type type; 640 641 if (newline_ok) 642 type = read_token(tok); 643 else 644 type = read_token_item(tok); 645 return test_type(type, expect); 646 } 647 648 static int read_expect_type(enum event_type expect, char **tok) 649 { 650 return __read_expect_type(expect, tok, 1); 651 } 652 653 static int __read_expected(enum event_type expect, char *str, int newline_ok) 654 { 655 enum event_type type; 656 char *token; 657 int ret; 658 659 if (newline_ok) 660 type = read_token(&token); 661 else 662 type = read_token_item(&token); 663 664 ret = test_type_token(type, token, expect, str); 665 666 free_token(token); 667 668 return 0; 669 } 670 671 static int read_expected(enum event_type expect, char *str) 672 { 673 return __read_expected(expect, str, 1); 674 } 675 676 static int read_expected_item(enum event_type expect, char *str) 677 { 678 return __read_expected(expect, str, 0); 679 } 680 681 static char *event_read_name(void) 682 { 683 char *token; 684 685 if (read_expected(EVENT_ITEM, (char *)"name") < 0) 686 return NULL; 687 688 if (read_expected(EVENT_OP, (char *)":") < 0) 689 return NULL; 690 691 if (read_expect_type(EVENT_ITEM, &token) < 0) 692 goto fail; 693 694 return token; 695 696 fail: 697 free_token(token); 698 return NULL; 699 } 700 701 static int event_read_id(void) 702 { 703 char *token; 704 int id; 705 706 if (read_expected_item(EVENT_ITEM, (char *)"ID") < 0) 707 return -1; 708 709 if (read_expected(EVENT_OP, (char *)":") < 0) 710 return -1; 711 712 if (read_expect_type(EVENT_ITEM, &token) < 0) 713 goto fail; 714 715 id = strtoul(token, NULL, 0); 716 free_token(token); 717 return id; 718 719 fail: 720 free_token(token); 721 return -1; 722 } 723 724 static int event_read_fields(struct event *event, struct format_field **fields) 725 { 726 struct format_field *field = NULL; 727 enum event_type type; 728 char *token; 729 char *last_token; 730 int count = 0; 731 732 do { 733 type = read_token(&token); 734 if (type == EVENT_NEWLINE) { 735 free_token(token); 736 return count; 737 } 738 739 count++; 740 741 if (test_type_token(type, token, EVENT_ITEM, (char *)"field")) 742 goto fail; 743 free_token(token); 744 745 type = read_token(&token); 746 /* 747 * The ftrace fields may still use the "special" name. 748 * Just ignore it. 749 */ 750 if (event->flags & EVENT_FL_ISFTRACE && 751 type == EVENT_ITEM && strcmp(token, "special") == 0) { 752 free_token(token); 753 type = read_token(&token); 754 } 755 756 if (test_type_token(type, token, EVENT_OP, (char *)":") < 0) 757 return -1; 758 759 if (read_expect_type(EVENT_ITEM, &token) < 0) 760 goto fail; 761 762 last_token = token; 763 764 field = malloc_or_die(sizeof(*field)); 765 memset(field, 0, sizeof(*field)); 766 767 /* read the rest of the type */ 768 for (;;) { 769 type = read_token(&token); 770 if (type == EVENT_ITEM || 771 (type == EVENT_OP && strcmp(token, "*") == 0) || 772 /* 773 * Some of the ftrace fields are broken and have 774 * an illegal "." in them. 775 */ 776 (event->flags & EVENT_FL_ISFTRACE && 777 type == EVENT_OP && strcmp(token, ".") == 0)) { 778 779 if (strcmp(token, "*") == 0) 780 field->flags |= FIELD_IS_POINTER; 781 782 if (field->type) { 783 field->type = realloc(field->type, 784 strlen(field->type) + 785 strlen(last_token) + 2); 786 strcat(field->type, " "); 787 strcat(field->type, last_token); 788 } else 789 field->type = last_token; 790 last_token = token; 791 continue; 792 } 793 794 break; 795 } 796 797 if (!field->type) { 798 die("no type found"); 799 goto fail; 800 } 801 field->name = last_token; 802 803 if (test_type(type, EVENT_OP)) 804 goto fail; 805 806 if (strcmp(token, "[") == 0) { 807 enum event_type last_type = type; 808 char *brackets = token; 809 int len; 810 811 field->flags |= FIELD_IS_ARRAY; 812 813 type = read_token(&token); 814 while (strcmp(token, "]") != 0) { 815 if (last_type == EVENT_ITEM && 816 type == EVENT_ITEM) 817 len = 2; 818 else 819 len = 1; 820 last_type = type; 821 822 brackets = realloc(brackets, 823 strlen(brackets) + 824 strlen(token) + len); 825 if (len == 2) 826 strcat(brackets, " "); 827 strcat(brackets, token); 828 free_token(token); 829 type = read_token(&token); 830 if (type == EVENT_NONE) { 831 die("failed to find token"); 832 goto fail; 833 } 834 } 835 836 free_token(token); 837 838 brackets = realloc(brackets, strlen(brackets) + 2); 839 strcat(brackets, "]"); 840 841 /* add brackets to type */ 842 843 type = read_token(&token); 844 /* 845 * If the next token is not an OP, then it is of 846 * the format: type [] item; 847 */ 848 if (type == EVENT_ITEM) { 849 field->type = realloc(field->type, 850 strlen(field->type) + 851 strlen(field->name) + 852 strlen(brackets) + 2); 853 strcat(field->type, " "); 854 strcat(field->type, field->name); 855 free_token(field->name); 856 strcat(field->type, brackets); 857 field->name = token; 858 type = read_token(&token); 859 } else { 860 field->type = realloc(field->type, 861 strlen(field->type) + 862 strlen(brackets) + 1); 863 strcat(field->type, brackets); 864 } 865 free(brackets); 866 } 867 868 if (test_type_token(type, token, EVENT_OP, (char *)";")) 869 goto fail; 870 free_token(token); 871 872 if (read_expected(EVENT_ITEM, (char *)"offset") < 0) 873 goto fail_expect; 874 875 if (read_expected(EVENT_OP, (char *)":") < 0) 876 goto fail_expect; 877 878 if (read_expect_type(EVENT_ITEM, &token)) 879 goto fail; 880 field->offset = strtoul(token, NULL, 0); 881 free_token(token); 882 883 if (read_expected(EVENT_OP, (char *)";") < 0) 884 goto fail_expect; 885 886 if (read_expected(EVENT_ITEM, (char *)"size") < 0) 887 goto fail_expect; 888 889 if (read_expected(EVENT_OP, (char *)":") < 0) 890 goto fail_expect; 891 892 if (read_expect_type(EVENT_ITEM, &token)) 893 goto fail; 894 field->size = strtoul(token, NULL, 0); 895 free_token(token); 896 897 if (read_expected(EVENT_OP, (char *)";") < 0) 898 goto fail_expect; 899 900 if (read_expect_type(EVENT_NEWLINE, &token) < 0) 901 goto fail; 902 free_token(token); 903 904 *fields = field; 905 fields = &field->next; 906 907 } while (1); 908 909 return 0; 910 911 fail: 912 free_token(token); 913 fail_expect: 914 if (field) 915 free(field); 916 return -1; 917 } 918 919 static int event_read_format(struct event *event) 920 { 921 char *token; 922 int ret; 923 924 if (read_expected_item(EVENT_ITEM, (char *)"format") < 0) 925 return -1; 926 927 if (read_expected(EVENT_OP, (char *)":") < 0) 928 return -1; 929 930 if (read_expect_type(EVENT_NEWLINE, &token)) 931 goto fail; 932 free_token(token); 933 934 ret = event_read_fields(event, &event->format.common_fields); 935 if (ret < 0) 936 return ret; 937 event->format.nr_common = ret; 938 939 ret = event_read_fields(event, &event->format.fields); 940 if (ret < 0) 941 return ret; 942 event->format.nr_fields = ret; 943 944 return 0; 945 946 fail: 947 free_token(token); 948 return -1; 949 } 950 951 enum event_type 952 process_arg_token(struct event *event, struct print_arg *arg, 953 char **tok, enum event_type type); 954 955 static enum event_type 956 process_arg(struct event *event, struct print_arg *arg, char **tok) 957 { 958 enum event_type type; 959 char *token; 960 961 type = read_token(&token); 962 *tok = token; 963 964 return process_arg_token(event, arg, tok, type); 965 } 966 967 static enum event_type 968 process_cond(struct event *event, struct print_arg *top, char **tok) 969 { 970 struct print_arg *arg, *left, *right; 971 enum event_type type; 972 char *token = NULL; 973 974 arg = malloc_or_die(sizeof(*arg)); 975 memset(arg, 0, sizeof(*arg)); 976 977 left = malloc_or_die(sizeof(*left)); 978 979 right = malloc_or_die(sizeof(*right)); 980 981 arg->type = PRINT_OP; 982 arg->op.left = left; 983 arg->op.right = right; 984 985 *tok = NULL; 986 type = process_arg(event, left, &token); 987 if (test_type_token(type, token, EVENT_OP, (char *)":")) 988 goto out_free; 989 990 arg->op.op = token; 991 992 type = process_arg(event, right, &token); 993 994 top->op.right = arg; 995 996 *tok = token; 997 return type; 998 999 out_free: 1000 free_token(*tok); 1001 free(right); 1002 free(left); 1003 free_arg(arg); 1004 return EVENT_ERROR; 1005 } 1006 1007 static int get_op_prio(char *op) 1008 { 1009 if (!op[1]) { 1010 switch (op[0]) { 1011 case '*': 1012 case '/': 1013 case '%': 1014 return 6; 1015 case '+': 1016 case '-': 1017 return 7; 1018 /* '>>' and '<<' are 8 */ 1019 case '<': 1020 case '>': 1021 return 9; 1022 /* '==' and '!=' are 10 */ 1023 case '&': 1024 return 11; 1025 case '^': 1026 return 12; 1027 case '|': 1028 return 13; 1029 case '?': 1030 return 16; 1031 default: 1032 die("unknown op '%c'", op[0]); 1033 return -1; 1034 } 1035 } else { 1036 if (strcmp(op, "++") == 0 || 1037 strcmp(op, "--") == 0) { 1038 return 3; 1039 } else if (strcmp(op, ">>") == 0 || 1040 strcmp(op, "<<") == 0) { 1041 return 8; 1042 } else if (strcmp(op, ">=") == 0 || 1043 strcmp(op, "<=") == 0) { 1044 return 9; 1045 } else if (strcmp(op, "==") == 0 || 1046 strcmp(op, "!=") == 0) { 1047 return 10; 1048 } else if (strcmp(op, "&&") == 0) { 1049 return 14; 1050 } else if (strcmp(op, "||") == 0) { 1051 return 15; 1052 } else { 1053 die("unknown op '%s'", op); 1054 return -1; 1055 } 1056 } 1057 } 1058 1059 static void set_op_prio(struct print_arg *arg) 1060 { 1061 1062 /* single ops are the greatest */ 1063 if (!arg->op.left || arg->op.left->type == PRINT_NULL) { 1064 arg->op.prio = 0; 1065 return; 1066 } 1067 1068 arg->op.prio = get_op_prio(arg->op.op); 1069 } 1070 1071 static enum event_type 1072 process_op(struct event *event, struct print_arg *arg, char **tok) 1073 { 1074 struct print_arg *left, *right = NULL; 1075 enum event_type type; 1076 char *token; 1077 1078 /* the op is passed in via tok */ 1079 token = *tok; 1080 1081 if (arg->type == PRINT_OP && !arg->op.left) { 1082 /* handle single op */ 1083 if (token[1]) { 1084 die("bad op token %s", token); 1085 return EVENT_ERROR; 1086 } 1087 switch (token[0]) { 1088 case '!': 1089 case '+': 1090 case '-': 1091 break; 1092 default: 1093 die("bad op token %s", token); 1094 return EVENT_ERROR; 1095 } 1096 1097 /* make an empty left */ 1098 left = malloc_or_die(sizeof(*left)); 1099 left->type = PRINT_NULL; 1100 arg->op.left = left; 1101 1102 right = malloc_or_die(sizeof(*right)); 1103 arg->op.right = right; 1104 1105 type = process_arg(event, right, tok); 1106 1107 } else if (strcmp(token, "?") == 0) { 1108 1109 left = malloc_or_die(sizeof(*left)); 1110 /* copy the top arg to the left */ 1111 *left = *arg; 1112 1113 arg->type = PRINT_OP; 1114 arg->op.op = token; 1115 arg->op.left = left; 1116 arg->op.prio = 0; 1117 1118 type = process_cond(event, arg, tok); 1119 1120 } else if (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 strcmp(token, "!=") == 0) { 1133 1134 left = malloc_or_die(sizeof(*left)); 1135 1136 /* copy the top arg to the left */ 1137 *left = *arg; 1138 1139 arg->type = PRINT_OP; 1140 arg->op.op = token; 1141 arg->op.left = left; 1142 1143 set_op_prio(arg); 1144 1145 right = malloc_or_die(sizeof(*right)); 1146 1147 type = process_arg(event, right, tok); 1148 1149 arg->op.right = right; 1150 1151 } else { 1152 die("unknown op '%s'", token); 1153 /* the arg is now the left side */ 1154 return EVENT_NONE; 1155 } 1156 1157 1158 if (type == EVENT_OP) { 1159 int prio; 1160 1161 /* higher prios need to be closer to the root */ 1162 prio = get_op_prio(*tok); 1163 1164 if (prio > arg->op.prio) 1165 return process_op(event, arg, tok); 1166 1167 return process_op(event, right, tok); 1168 } 1169 1170 return type; 1171 } 1172 1173 static enum event_type 1174 process_entry(struct event *event __unused, struct print_arg *arg, 1175 char **tok) 1176 { 1177 enum event_type type; 1178 char *field; 1179 char *token; 1180 1181 if (read_expected(EVENT_OP, (char *)"->") < 0) 1182 return EVENT_ERROR; 1183 1184 if (read_expect_type(EVENT_ITEM, &token) < 0) 1185 goto fail; 1186 field = token; 1187 1188 arg->type = PRINT_FIELD; 1189 arg->field.name = field; 1190 1191 type = read_token(&token); 1192 *tok = token; 1193 1194 return type; 1195 1196 fail: 1197 free_token(token); 1198 return EVENT_ERROR; 1199 } 1200 1201 static char *arg_eval (struct print_arg *arg); 1202 1203 static long long arg_num_eval(struct print_arg *arg) 1204 { 1205 long long left, right; 1206 long long val = 0; 1207 1208 switch (arg->type) { 1209 case PRINT_ATOM: 1210 val = strtoll(arg->atom.atom, NULL, 0); 1211 break; 1212 case PRINT_TYPE: 1213 val = arg_num_eval(arg->typecast.item); 1214 break; 1215 case PRINT_OP: 1216 switch (arg->op.op[0]) { 1217 case '|': 1218 left = arg_num_eval(arg->op.left); 1219 right = arg_num_eval(arg->op.right); 1220 if (arg->op.op[1]) 1221 val = left || right; 1222 else 1223 val = left | right; 1224 break; 1225 case '&': 1226 left = arg_num_eval(arg->op.left); 1227 right = arg_num_eval(arg->op.right); 1228 if (arg->op.op[1]) 1229 val = left && right; 1230 else 1231 val = left & right; 1232 break; 1233 case '<': 1234 left = arg_num_eval(arg->op.left); 1235 right = arg_num_eval(arg->op.right); 1236 switch (arg->op.op[1]) { 1237 case 0: 1238 val = left < right; 1239 break; 1240 case '<': 1241 val = left << right; 1242 break; 1243 case '=': 1244 val = left <= right; 1245 break; 1246 default: 1247 die("unknown op '%s'", arg->op.op); 1248 } 1249 break; 1250 case '>': 1251 left = arg_num_eval(arg->op.left); 1252 right = arg_num_eval(arg->op.right); 1253 switch (arg->op.op[1]) { 1254 case 0: 1255 val = left > right; 1256 break; 1257 case '>': 1258 val = left >> right; 1259 break; 1260 case '=': 1261 val = left >= right; 1262 break; 1263 default: 1264 die("unknown op '%s'", arg->op.op); 1265 } 1266 break; 1267 case '=': 1268 left = arg_num_eval(arg->op.left); 1269 right = arg_num_eval(arg->op.right); 1270 1271 if (arg->op.op[1] != '=') 1272 die("unknown op '%s'", arg->op.op); 1273 1274 val = left == right; 1275 break; 1276 case '!': 1277 left = arg_num_eval(arg->op.left); 1278 right = arg_num_eval(arg->op.right); 1279 1280 switch (arg->op.op[1]) { 1281 case '=': 1282 val = left != right; 1283 break; 1284 default: 1285 die("unknown op '%s'", arg->op.op); 1286 } 1287 break; 1288 default: 1289 die("unknown op '%s'", arg->op.op); 1290 } 1291 break; 1292 1293 case PRINT_NULL: 1294 case PRINT_FIELD ... PRINT_SYMBOL: 1295 case PRINT_STRING: 1296 default: 1297 die("invalid eval type %d", arg->type); 1298 1299 } 1300 return val; 1301 } 1302 1303 static char *arg_eval (struct print_arg *arg) 1304 { 1305 long long val; 1306 static char buf[20]; 1307 1308 switch (arg->type) { 1309 case PRINT_ATOM: 1310 return arg->atom.atom; 1311 case PRINT_TYPE: 1312 return arg_eval(arg->typecast.item); 1313 case PRINT_OP: 1314 val = arg_num_eval(arg); 1315 sprintf(buf, "%lld", val); 1316 return buf; 1317 1318 case PRINT_NULL: 1319 case PRINT_FIELD ... PRINT_SYMBOL: 1320 case PRINT_STRING: 1321 default: 1322 die("invalid eval type %d", arg->type); 1323 break; 1324 } 1325 1326 return NULL; 1327 } 1328 1329 static enum event_type 1330 process_fields(struct event *event, struct print_flag_sym **list, char **tok) 1331 { 1332 enum event_type type; 1333 struct print_arg *arg = NULL; 1334 struct print_flag_sym *field; 1335 char *token = NULL; 1336 char *value; 1337 1338 do { 1339 free_token(token); 1340 type = read_token_item(&token); 1341 if (test_type_token(type, token, EVENT_OP, (char *)"{")) 1342 break; 1343 1344 arg = malloc_or_die(sizeof(*arg)); 1345 1346 free_token(token); 1347 type = process_arg(event, arg, &token); 1348 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1349 goto out_free; 1350 1351 field = malloc_or_die(sizeof(*field)); 1352 memset(field, 0, sizeof(field)); 1353 1354 value = arg_eval(arg); 1355 field->value = strdup(value); 1356 1357 free_token(token); 1358 type = process_arg(event, arg, &token); 1359 if (test_type_token(type, token, EVENT_OP, (char *)"}")) 1360 goto out_free; 1361 1362 value = arg_eval(arg); 1363 field->str = strdup(value); 1364 free_arg(arg); 1365 arg = NULL; 1366 1367 *list = field; 1368 list = &field->next; 1369 1370 free_token(token); 1371 type = read_token_item(&token); 1372 } while (type == EVENT_DELIM && strcmp(token, ",") == 0); 1373 1374 *tok = token; 1375 return type; 1376 1377 out_free: 1378 free_arg(arg); 1379 free_token(token); 1380 1381 return EVENT_ERROR; 1382 } 1383 1384 static enum event_type 1385 process_flags(struct event *event, struct print_arg *arg, char **tok) 1386 { 1387 struct print_arg *field; 1388 enum event_type type; 1389 char *token; 1390 1391 memset(arg, 0, sizeof(*arg)); 1392 arg->type = PRINT_FLAGS; 1393 1394 if (read_expected_item(EVENT_DELIM, (char *)"(") < 0) 1395 return EVENT_ERROR; 1396 1397 field = malloc_or_die(sizeof(*field)); 1398 1399 type = process_arg(event, field, &token); 1400 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1401 goto out_free; 1402 1403 arg->flags.field = field; 1404 1405 type = read_token_item(&token); 1406 if (event_item_type(type)) { 1407 arg->flags.delim = token; 1408 type = read_token_item(&token); 1409 } 1410 1411 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1412 goto out_free; 1413 1414 type = process_fields(event, &arg->flags.flags, &token); 1415 if (test_type_token(type, token, EVENT_DELIM, (char *)")")) 1416 goto out_free; 1417 1418 free_token(token); 1419 type = read_token_item(tok); 1420 return type; 1421 1422 out_free: 1423 free_token(token); 1424 return EVENT_ERROR; 1425 } 1426 1427 static enum event_type 1428 process_symbols(struct event *event, struct print_arg *arg, char **tok) 1429 { 1430 struct print_arg *field; 1431 enum event_type type; 1432 char *token; 1433 1434 memset(arg, 0, sizeof(*arg)); 1435 arg->type = PRINT_SYMBOL; 1436 1437 if (read_expected_item(EVENT_DELIM, (char *)"(") < 0) 1438 return EVENT_ERROR; 1439 1440 field = malloc_or_die(sizeof(*field)); 1441 1442 type = process_arg(event, field, &token); 1443 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1444 goto out_free; 1445 1446 arg->symbol.field = field; 1447 1448 type = process_fields(event, &arg->symbol.symbols, &token); 1449 if (test_type_token(type, token, EVENT_DELIM, (char *)")")) 1450 goto out_free; 1451 1452 free_token(token); 1453 type = read_token_item(tok); 1454 return type; 1455 1456 out_free: 1457 free_token(token); 1458 return EVENT_ERROR; 1459 } 1460 1461 static enum event_type 1462 process_paren(struct event *event, struct print_arg *arg, char **tok) 1463 { 1464 struct print_arg *item_arg; 1465 enum event_type type; 1466 int ptr_cast = 0; 1467 char *token; 1468 1469 type = process_arg(event, arg, &token); 1470 1471 if (type == EVENT_ERROR) 1472 return EVENT_ERROR; 1473 1474 if (type == EVENT_OP) { 1475 /* handle the ptr casts */ 1476 if (!strcmp(token, "*")) { 1477 /* 1478 * FIXME: should we zapp whitespaces before ')' ? 1479 * (may require a peek_token_item()) 1480 */ 1481 if (__peek_char() == ')') { 1482 ptr_cast = 1; 1483 free_token(token); 1484 type = read_token_item(&token); 1485 } 1486 } 1487 if (!ptr_cast) { 1488 type = process_op(event, arg, &token); 1489 1490 if (type == EVENT_ERROR) 1491 return EVENT_ERROR; 1492 } 1493 } 1494 1495 if (test_type_token(type, token, EVENT_DELIM, (char *)")")) { 1496 free_token(token); 1497 return EVENT_ERROR; 1498 } 1499 1500 free_token(token); 1501 type = read_token_item(&token); 1502 1503 /* 1504 * If the next token is an item or another open paren, then 1505 * this was a typecast. 1506 */ 1507 if (event_item_type(type) || 1508 (type == EVENT_DELIM && strcmp(token, "(") == 0)) { 1509 1510 /* make this a typecast and contine */ 1511 1512 /* prevous must be an atom */ 1513 if (arg->type != PRINT_ATOM) 1514 die("previous needed to be PRINT_ATOM"); 1515 1516 item_arg = malloc_or_die(sizeof(*item_arg)); 1517 1518 arg->type = PRINT_TYPE; 1519 if (ptr_cast) { 1520 char *old = arg->atom.atom; 1521 1522 arg->atom.atom = malloc_or_die(strlen(old + 3)); 1523 sprintf(arg->atom.atom, "%s *", old); 1524 free(old); 1525 } 1526 arg->typecast.type = arg->atom.atom; 1527 arg->typecast.item = item_arg; 1528 type = process_arg_token(event, item_arg, &token, type); 1529 1530 } 1531 1532 *tok = token; 1533 return type; 1534 } 1535 1536 1537 static enum event_type 1538 process_str(struct event *event __unused, struct print_arg *arg, char **tok) 1539 { 1540 enum event_type type; 1541 char *token; 1542 1543 if (read_expected(EVENT_DELIM, (char *)"(") < 0) 1544 return EVENT_ERROR; 1545 1546 if (read_expect_type(EVENT_ITEM, &token) < 0) 1547 goto fail; 1548 1549 arg->type = PRINT_STRING; 1550 arg->string.string = token; 1551 1552 if (read_expected(EVENT_DELIM, (char *)")") < 0) 1553 return EVENT_ERROR; 1554 1555 type = read_token(&token); 1556 *tok = token; 1557 1558 return type; 1559 fail: 1560 free_token(token); 1561 return EVENT_ERROR; 1562 } 1563 1564 enum event_type 1565 process_arg_token(struct event *event, struct print_arg *arg, 1566 char **tok, enum event_type type) 1567 { 1568 char *token; 1569 char *atom; 1570 1571 token = *tok; 1572 1573 switch (type) { 1574 case EVENT_ITEM: 1575 if (strcmp(token, "REC") == 0) { 1576 free_token(token); 1577 type = process_entry(event, arg, &token); 1578 } else if (strcmp(token, "__print_flags") == 0) { 1579 free_token(token); 1580 type = process_flags(event, arg, &token); 1581 } else if (strcmp(token, "__print_symbolic") == 0) { 1582 free_token(token); 1583 type = process_symbols(event, arg, &token); 1584 } else if (strcmp(token, "__get_str") == 0) { 1585 free_token(token); 1586 type = process_str(event, arg, &token); 1587 } else { 1588 atom = token; 1589 /* test the next token */ 1590 type = read_token_item(&token); 1591 1592 /* atoms can be more than one token long */ 1593 while (type == EVENT_ITEM) { 1594 atom = realloc(atom, strlen(atom) + strlen(token) + 2); 1595 strcat(atom, " "); 1596 strcat(atom, token); 1597 free_token(token); 1598 type = read_token_item(&token); 1599 } 1600 1601 /* todo, test for function */ 1602 1603 arg->type = PRINT_ATOM; 1604 arg->atom.atom = atom; 1605 } 1606 break; 1607 case EVENT_DQUOTE: 1608 case EVENT_SQUOTE: 1609 arg->type = PRINT_ATOM; 1610 arg->atom.atom = token; 1611 type = read_token_item(&token); 1612 break; 1613 case EVENT_DELIM: 1614 if (strcmp(token, "(") == 0) { 1615 free_token(token); 1616 type = process_paren(event, arg, &token); 1617 break; 1618 } 1619 case EVENT_OP: 1620 /* handle single ops */ 1621 arg->type = PRINT_OP; 1622 arg->op.op = token; 1623 arg->op.left = NULL; 1624 type = process_op(event, arg, &token); 1625 1626 break; 1627 1628 case EVENT_ERROR ... EVENT_NEWLINE: 1629 default: 1630 die("unexpected type %d", type); 1631 } 1632 *tok = token; 1633 1634 return type; 1635 } 1636 1637 static int event_read_print_args(struct event *event, struct print_arg **list) 1638 { 1639 enum event_type type; 1640 struct print_arg *arg; 1641 char *token; 1642 int args = 0; 1643 1644 do { 1645 arg = malloc_or_die(sizeof(*arg)); 1646 memset(arg, 0, sizeof(*arg)); 1647 1648 type = process_arg(event, arg, &token); 1649 1650 if (type == EVENT_ERROR) { 1651 free_arg(arg); 1652 return -1; 1653 } 1654 1655 *list = arg; 1656 args++; 1657 1658 if (type == EVENT_OP) { 1659 type = process_op(event, arg, &token); 1660 list = &arg->next; 1661 continue; 1662 } 1663 1664 if (type == EVENT_DELIM && strcmp(token, ",") == 0) { 1665 free_token(token); 1666 *list = arg; 1667 list = &arg->next; 1668 continue; 1669 } 1670 break; 1671 } while (type != EVENT_NONE); 1672 1673 if (type != EVENT_NONE) 1674 free_token(token); 1675 1676 return args; 1677 } 1678 1679 static int event_read_print(struct event *event) 1680 { 1681 enum event_type type; 1682 char *token; 1683 int ret; 1684 1685 if (read_expected_item(EVENT_ITEM, (char *)"print") < 0) 1686 return -1; 1687 1688 if (read_expected(EVENT_ITEM, (char *)"fmt") < 0) 1689 return -1; 1690 1691 if (read_expected(EVENT_OP, (char *)":") < 0) 1692 return -1; 1693 1694 if (read_expect_type(EVENT_DQUOTE, &token) < 0) 1695 goto fail; 1696 1697 event->print_fmt.format = token; 1698 event->print_fmt.args = NULL; 1699 1700 /* ok to have no arg */ 1701 type = read_token_item(&token); 1702 1703 if (type == EVENT_NONE) 1704 return 0; 1705 1706 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1707 goto fail; 1708 1709 free_token(token); 1710 1711 ret = event_read_print_args(event, &event->print_fmt.args); 1712 if (ret < 0) 1713 return -1; 1714 1715 return 0; 1716 1717 fail: 1718 free_token(token); 1719 return -1; 1720 } 1721 1722 static struct format_field * 1723 find_common_field(struct event *event, const char *name) 1724 { 1725 struct format_field *format; 1726 1727 for (format = event->format.common_fields; 1728 format; format = format->next) { 1729 if (strcmp(format->name, name) == 0) 1730 break; 1731 } 1732 1733 return format; 1734 } 1735 1736 static struct format_field * 1737 find_field(struct event *event, const char *name) 1738 { 1739 struct format_field *format; 1740 1741 for (format = event->format.fields; 1742 format; format = format->next) { 1743 if (strcmp(format->name, name) == 0) 1744 break; 1745 } 1746 1747 return format; 1748 } 1749 1750 static struct format_field * 1751 find_any_field(struct event *event, const char *name) 1752 { 1753 struct format_field *format; 1754 1755 format = find_common_field(event, name); 1756 if (format) 1757 return format; 1758 return find_field(event, name); 1759 } 1760 1761 static unsigned long long read_size(void *ptr, int size) 1762 { 1763 switch (size) { 1764 case 1: 1765 return *(unsigned char *)ptr; 1766 case 2: 1767 return data2host2(ptr); 1768 case 4: 1769 return data2host4(ptr); 1770 case 8: 1771 return data2host8(ptr); 1772 default: 1773 /* BUG! */ 1774 return 0; 1775 } 1776 } 1777 1778 static int get_common_info(const char *type, int *offset, int *size) 1779 { 1780 struct event *event; 1781 struct format_field *field; 1782 1783 /* 1784 * All events should have the same common elements. 1785 * Pick any event to find where the type is; 1786 */ 1787 if (!event_list) 1788 die("no event_list!"); 1789 1790 event = event_list; 1791 field = find_common_field(event, type); 1792 if (!field) 1793 die("field '%s' not found", type); 1794 1795 *offset = field->offset; 1796 *size = field->size; 1797 1798 return 0; 1799 } 1800 1801 static int parse_common_type(void *data) 1802 { 1803 static int type_offset; 1804 static int type_size; 1805 int ret; 1806 1807 if (!type_size) { 1808 ret = get_common_info("common_type", 1809 &type_offset, 1810 &type_size); 1811 if (ret < 0) 1812 return ret; 1813 } 1814 return read_size(data + type_offset, type_size); 1815 } 1816 1817 static int parse_common_pid(void *data) 1818 { 1819 static int pid_offset; 1820 static int pid_size; 1821 int ret; 1822 1823 if (!pid_size) { 1824 ret = get_common_info("common_pid", 1825 &pid_offset, 1826 &pid_size); 1827 if (ret < 0) 1828 return ret; 1829 } 1830 1831 return read_size(data + pid_offset, pid_size); 1832 } 1833 1834 static struct event *find_event(int id) 1835 { 1836 struct event *event; 1837 1838 for (event = event_list; event; event = event->next) { 1839 if (event->id == id) 1840 break; 1841 } 1842 return event; 1843 } 1844 1845 static unsigned long long eval_num_arg(void *data, int size, 1846 struct event *event, struct print_arg *arg) 1847 { 1848 unsigned long long val = 0; 1849 unsigned long long left, right; 1850 1851 switch (arg->type) { 1852 case PRINT_NULL: 1853 /* ?? */ 1854 return 0; 1855 case PRINT_ATOM: 1856 return strtoull(arg->atom.atom, NULL, 0); 1857 case PRINT_FIELD: 1858 if (!arg->field.field) { 1859 arg->field.field = find_any_field(event, arg->field.name); 1860 if (!arg->field.field) 1861 die("field %s not found", arg->field.name); 1862 } 1863 /* must be a number */ 1864 val = read_size(data + arg->field.field->offset, 1865 arg->field.field->size); 1866 break; 1867 case PRINT_FLAGS: 1868 case PRINT_SYMBOL: 1869 break; 1870 case PRINT_TYPE: 1871 return eval_num_arg(data, size, event, arg->typecast.item); 1872 case PRINT_STRING: 1873 return 0; 1874 break; 1875 case PRINT_OP: 1876 left = eval_num_arg(data, size, event, arg->op.left); 1877 right = eval_num_arg(data, size, event, arg->op.right); 1878 switch (arg->op.op[0]) { 1879 case '|': 1880 if (arg->op.op[1]) 1881 val = left || right; 1882 else 1883 val = left | right; 1884 break; 1885 case '&': 1886 if (arg->op.op[1]) 1887 val = left && right; 1888 else 1889 val = left & right; 1890 break; 1891 case '<': 1892 switch (arg->op.op[1]) { 1893 case 0: 1894 val = left < right; 1895 break; 1896 case '<': 1897 val = left << right; 1898 break; 1899 case '=': 1900 val = left <= right; 1901 break; 1902 default: 1903 die("unknown op '%s'", arg->op.op); 1904 } 1905 break; 1906 case '>': 1907 switch (arg->op.op[1]) { 1908 case 0: 1909 val = left > right; 1910 break; 1911 case '>': 1912 val = left >> right; 1913 break; 1914 case '=': 1915 val = left >= right; 1916 break; 1917 default: 1918 die("unknown op '%s'", arg->op.op); 1919 } 1920 break; 1921 case '=': 1922 if (arg->op.op[1] != '=') 1923 die("unknown op '%s'", arg->op.op); 1924 val = left == right; 1925 break; 1926 default: 1927 die("unknown op '%s'", arg->op.op); 1928 } 1929 break; 1930 default: /* not sure what to do there */ 1931 return 0; 1932 } 1933 return val; 1934 } 1935 1936 struct flag { 1937 const char *name; 1938 unsigned long long value; 1939 }; 1940 1941 static const struct flag flags[] = { 1942 { "HI_SOFTIRQ", 0 }, 1943 { "TIMER_SOFTIRQ", 1 }, 1944 { "NET_TX_SOFTIRQ", 2 }, 1945 { "NET_RX_SOFTIRQ", 3 }, 1946 { "BLOCK_SOFTIRQ", 4 }, 1947 { "TASKLET_SOFTIRQ", 5 }, 1948 { "SCHED_SOFTIRQ", 6 }, 1949 { "HRTIMER_SOFTIRQ", 7 }, 1950 { "RCU_SOFTIRQ", 8 }, 1951 1952 { "HRTIMER_NORESTART", 0 }, 1953 { "HRTIMER_RESTART", 1 }, 1954 }; 1955 1956 static unsigned long long eval_flag(const char *flag) 1957 { 1958 int i; 1959 1960 /* 1961 * Some flags in the format files do not get converted. 1962 * If the flag is not numeric, see if it is something that 1963 * we already know about. 1964 */ 1965 if (isdigit(flag[0])) 1966 return strtoull(flag, NULL, 0); 1967 1968 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) 1969 if (strcmp(flags[i].name, flag) == 0) 1970 return flags[i].value; 1971 1972 return 0; 1973 } 1974 1975 static void print_str_arg(void *data, int size, 1976 struct event *event, struct print_arg *arg) 1977 { 1978 struct print_flag_sym *flag; 1979 unsigned long long val, fval; 1980 char *str; 1981 int print; 1982 1983 switch (arg->type) { 1984 case PRINT_NULL: 1985 /* ?? */ 1986 return; 1987 case PRINT_ATOM: 1988 printf("%s", arg->atom.atom); 1989 return; 1990 case PRINT_FIELD: 1991 if (!arg->field.field) { 1992 arg->field.field = find_any_field(event, arg->field.name); 1993 if (!arg->field.field) 1994 die("field %s not found", arg->field.name); 1995 } 1996 str = malloc_or_die(arg->field.field->size + 1); 1997 memcpy(str, data + arg->field.field->offset, 1998 arg->field.field->size); 1999 str[arg->field.field->size] = 0; 2000 printf("%s", str); 2001 free(str); 2002 break; 2003 case PRINT_FLAGS: 2004 val = eval_num_arg(data, size, event, arg->flags.field); 2005 print = 0; 2006 for (flag = arg->flags.flags; flag; flag = flag->next) { 2007 fval = eval_flag(flag->value); 2008 if (!val && !fval) { 2009 printf("%s", flag->str); 2010 break; 2011 } 2012 if (fval && (val & fval) == fval) { 2013 if (print && arg->flags.delim) 2014 printf("%s", arg->flags.delim); 2015 printf("%s", flag->str); 2016 print = 1; 2017 val &= ~fval; 2018 } 2019 } 2020 break; 2021 case PRINT_SYMBOL: 2022 val = eval_num_arg(data, size, event, arg->symbol.field); 2023 for (flag = arg->symbol.symbols; flag; flag = flag->next) { 2024 fval = eval_flag(flag->value); 2025 if (val == fval) { 2026 printf("%s", flag->str); 2027 break; 2028 } 2029 } 2030 break; 2031 2032 case PRINT_TYPE: 2033 break; 2034 case PRINT_STRING: 2035 printf("%s", arg->string.string); 2036 break; 2037 case PRINT_OP: 2038 /* 2039 * The only op for string should be ? : 2040 */ 2041 if (arg->op.op[0] != '?') 2042 return; 2043 val = eval_num_arg(data, size, event, arg->op.left); 2044 if (val) 2045 print_str_arg(data, size, event, arg->op.right->op.left); 2046 else 2047 print_str_arg(data, size, event, arg->op.right->op.right); 2048 break; 2049 default: 2050 /* well... */ 2051 break; 2052 } 2053 } 2054 2055 static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event *event) 2056 { 2057 static struct format_field *field, *ip_field; 2058 struct print_arg *args, *arg, **next; 2059 unsigned long long ip, val; 2060 char *ptr; 2061 void *bptr; 2062 2063 if (!field) { 2064 field = find_field(event, "buf"); 2065 if (!field) 2066 die("can't find buffer field for binary printk"); 2067 ip_field = find_field(event, "ip"); 2068 if (!ip_field) 2069 die("can't find ip field for binary printk"); 2070 } 2071 2072 ip = read_size(data + ip_field->offset, ip_field->size); 2073 2074 /* 2075 * The first arg is the IP pointer. 2076 */ 2077 args = malloc_or_die(sizeof(*args)); 2078 arg = args; 2079 arg->next = NULL; 2080 next = &arg->next; 2081 2082 arg->type = PRINT_ATOM; 2083 arg->atom.atom = malloc_or_die(32); 2084 sprintf(arg->atom.atom, "%lld", ip); 2085 2086 /* skip the first "%pf : " */ 2087 for (ptr = fmt + 6, bptr = data + field->offset; 2088 bptr < data + size && *ptr; ptr++) { 2089 int ls = 0; 2090 2091 if (*ptr == '%') { 2092 process_again: 2093 ptr++; 2094 switch (*ptr) { 2095 case '%': 2096 break; 2097 case 'l': 2098 ls++; 2099 goto process_again; 2100 case 'L': 2101 ls = 2; 2102 goto process_again; 2103 case '0' ... '9': 2104 goto process_again; 2105 case 'p': 2106 ls = 1; 2107 /* fall through */ 2108 case 'd': 2109 case 'u': 2110 case 'x': 2111 case 'i': 2112 bptr = (void *)(((unsigned long)bptr + (long_size - 1)) & 2113 ~(long_size - 1)); 2114 switch (ls) { 2115 case 0: 2116 case 1: 2117 ls = long_size; 2118 break; 2119 case 2: 2120 ls = 8; 2121 default: 2122 break; 2123 } 2124 val = read_size(bptr, ls); 2125 bptr += ls; 2126 arg = malloc_or_die(sizeof(*arg)); 2127 arg->next = NULL; 2128 arg->type = PRINT_ATOM; 2129 arg->atom.atom = malloc_or_die(32); 2130 sprintf(arg->atom.atom, "%lld", val); 2131 *next = arg; 2132 next = &arg->next; 2133 break; 2134 case 's': 2135 arg = malloc_or_die(sizeof(*arg)); 2136 arg->next = NULL; 2137 arg->type = PRINT_STRING; 2138 arg->string.string = strdup(bptr); 2139 bptr += strlen(bptr) + 1; 2140 *next = arg; 2141 next = &arg->next; 2142 default: 2143 break; 2144 } 2145 } 2146 } 2147 2148 return args; 2149 } 2150 2151 static void free_args(struct print_arg *args) 2152 { 2153 struct print_arg *next; 2154 2155 while (args) { 2156 next = args->next; 2157 2158 if (args->type == PRINT_ATOM) 2159 free(args->atom.atom); 2160 else 2161 free(args->string.string); 2162 free(args); 2163 args = next; 2164 } 2165 } 2166 2167 static char *get_bprint_format(void *data, int size __unused, struct event *event) 2168 { 2169 unsigned long long addr; 2170 static struct format_field *field; 2171 struct printk_map *printk; 2172 char *format; 2173 char *p; 2174 2175 if (!field) { 2176 field = find_field(event, "fmt"); 2177 if (!field) 2178 die("can't find format field for binary printk"); 2179 printf("field->offset = %d size=%d\n", field->offset, field->size); 2180 } 2181 2182 addr = read_size(data + field->offset, field->size); 2183 2184 printk = find_printk(addr); 2185 if (!printk) { 2186 format = malloc_or_die(45); 2187 sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n", 2188 addr); 2189 return format; 2190 } 2191 2192 p = printk->printk; 2193 /* Remove any quotes. */ 2194 if (*p == '"') 2195 p++; 2196 format = malloc_or_die(strlen(p) + 10); 2197 sprintf(format, "%s : %s", "%pf", p); 2198 /* remove ending quotes and new line since we will add one too */ 2199 p = format + strlen(format) - 1; 2200 if (*p == '"') 2201 *p = 0; 2202 2203 p -= 2; 2204 if (strcmp(p, "\\n") == 0) 2205 *p = 0; 2206 2207 return format; 2208 } 2209 2210 static void pretty_print(void *data, int size, struct event *event) 2211 { 2212 struct print_fmt *print_fmt = &event->print_fmt; 2213 struct print_arg *arg = print_fmt->args; 2214 struct print_arg *args = NULL; 2215 const char *ptr = print_fmt->format; 2216 unsigned long long val; 2217 struct func_map *func; 2218 const char *saveptr; 2219 char *bprint_fmt = NULL; 2220 char format[32]; 2221 int show_func; 2222 int len; 2223 int ls; 2224 2225 if (event->flags & EVENT_FL_ISFUNC) 2226 ptr = " %pF <-- %pF"; 2227 2228 if (event->flags & EVENT_FL_ISBPRINT) { 2229 bprint_fmt = get_bprint_format(data, size, event); 2230 args = make_bprint_args(bprint_fmt, data, size, event); 2231 arg = args; 2232 ptr = bprint_fmt; 2233 } 2234 2235 for (; *ptr; ptr++) { 2236 ls = 0; 2237 if (*ptr == '%') { 2238 saveptr = ptr; 2239 show_func = 0; 2240 cont_process: 2241 ptr++; 2242 switch (*ptr) { 2243 case '%': 2244 printf("%%"); 2245 break; 2246 case 'l': 2247 ls++; 2248 goto cont_process; 2249 case 'L': 2250 ls = 2; 2251 goto cont_process; 2252 case 'z': 2253 case 'Z': 2254 case '0' ... '9': 2255 goto cont_process; 2256 case 'p': 2257 if (long_size == 4) 2258 ls = 1; 2259 else 2260 ls = 2; 2261 2262 if (*(ptr+1) == 'F' || 2263 *(ptr+1) == 'f') { 2264 ptr++; 2265 show_func = *ptr; 2266 } 2267 2268 /* fall through */ 2269 case 'd': 2270 case 'i': 2271 case 'x': 2272 case 'X': 2273 case 'u': 2274 if (!arg) 2275 die("no argument match"); 2276 2277 len = ((unsigned long)ptr + 1) - 2278 (unsigned long)saveptr; 2279 2280 /* should never happen */ 2281 if (len > 32) 2282 die("bad format!"); 2283 2284 memcpy(format, saveptr, len); 2285 format[len] = 0; 2286 2287 val = eval_num_arg(data, size, event, arg); 2288 arg = arg->next; 2289 2290 if (show_func) { 2291 func = find_func(val); 2292 if (func) { 2293 printf("%s", func->func); 2294 if (show_func == 'F') 2295 printf("+0x%llx", 2296 val - func->addr); 2297 break; 2298 } 2299 } 2300 switch (ls) { 2301 case 0: 2302 printf(format, (int)val); 2303 break; 2304 case 1: 2305 printf(format, (long)val); 2306 break; 2307 case 2: 2308 printf(format, (long long)val); 2309 break; 2310 default: 2311 die("bad count (%d)", ls); 2312 } 2313 break; 2314 case 's': 2315 if (!arg) 2316 die("no matching argument"); 2317 2318 print_str_arg(data, size, event, arg); 2319 arg = arg->next; 2320 break; 2321 default: 2322 printf(">%c<", *ptr); 2323 2324 } 2325 } else 2326 printf("%c", *ptr); 2327 } 2328 2329 if (args) { 2330 free_args(args); 2331 free(bprint_fmt); 2332 } 2333 } 2334 2335 static inline int log10_cpu(int nb) 2336 { 2337 if (nb / 100) 2338 return 3; 2339 if (nb / 10) 2340 return 2; 2341 return 1; 2342 } 2343 2344 /* taken from Linux, written by Frederic Weisbecker */ 2345 static void print_graph_cpu(int cpu) 2346 { 2347 int i; 2348 int log10_this = log10_cpu(cpu); 2349 int log10_all = log10_cpu(cpus); 2350 2351 2352 /* 2353 * Start with a space character - to make it stand out 2354 * to the right a bit when trace output is pasted into 2355 * email: 2356 */ 2357 printf(" "); 2358 2359 /* 2360 * Tricky - we space the CPU field according to the max 2361 * number of online CPUs. On a 2-cpu system it would take 2362 * a maximum of 1 digit - on a 128 cpu system it would 2363 * take up to 3 digits: 2364 */ 2365 for (i = 0; i < log10_all - log10_this; i++) 2366 printf(" "); 2367 2368 printf("%d) ", cpu); 2369 } 2370 2371 #define TRACE_GRAPH_PROCINFO_LENGTH 14 2372 #define TRACE_GRAPH_INDENT 2 2373 2374 static void print_graph_proc(int pid, const char *comm) 2375 { 2376 /* sign + log10(MAX_INT) + '\0' */ 2377 char pid_str[11]; 2378 int spaces = 0; 2379 int len; 2380 int i; 2381 2382 sprintf(pid_str, "%d", pid); 2383 2384 /* 1 stands for the "-" character */ 2385 len = strlen(comm) + strlen(pid_str) + 1; 2386 2387 if (len < TRACE_GRAPH_PROCINFO_LENGTH) 2388 spaces = TRACE_GRAPH_PROCINFO_LENGTH - len; 2389 2390 /* First spaces to align center */ 2391 for (i = 0; i < spaces / 2; i++) 2392 printf(" "); 2393 2394 printf("%s-%s", comm, pid_str); 2395 2396 /* Last spaces to align center */ 2397 for (i = 0; i < spaces - (spaces / 2); i++) 2398 printf(" "); 2399 } 2400 2401 static struct record * 2402 get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func, 2403 struct record *next) 2404 { 2405 struct format_field *field; 2406 struct event *event; 2407 unsigned long val; 2408 int type; 2409 int pid; 2410 2411 type = parse_common_type(next->data); 2412 event = find_event(type); 2413 if (!event) 2414 return NULL; 2415 2416 if (!(event->flags & EVENT_FL_ISFUNCRET)) 2417 return NULL; 2418 2419 pid = parse_common_pid(next->data); 2420 field = find_field(event, "func"); 2421 if (!field) 2422 die("function return does not have field func"); 2423 2424 val = read_size(next->data + field->offset, field->size); 2425 2426 if (cur_pid != pid || cur_func != val) 2427 return NULL; 2428 2429 /* this is a leaf, now advance the iterator */ 2430 return trace_read_data(cpu); 2431 } 2432 2433 /* Signal a overhead of time execution to the output */ 2434 static void print_graph_overhead(unsigned long long duration) 2435 { 2436 /* Non nested entry or return */ 2437 if (duration == ~0ULL) 2438 return (void)printf(" "); 2439 2440 /* Duration exceeded 100 msecs */ 2441 if (duration > 100000ULL) 2442 return (void)printf("! "); 2443 2444 /* Duration exceeded 10 msecs */ 2445 if (duration > 10000ULL) 2446 return (void)printf("+ "); 2447 2448 printf(" "); 2449 } 2450 2451 static void print_graph_duration(unsigned long long duration) 2452 { 2453 unsigned long usecs = duration / 1000; 2454 unsigned long nsecs_rem = duration % 1000; 2455 /* log10(ULONG_MAX) + '\0' */ 2456 char msecs_str[21]; 2457 char nsecs_str[5]; 2458 int len; 2459 int i; 2460 2461 sprintf(msecs_str, "%lu", usecs); 2462 2463 /* Print msecs */ 2464 len = printf("%lu", usecs); 2465 2466 /* Print nsecs (we don't want to exceed 7 numbers) */ 2467 if (len < 7) { 2468 snprintf(nsecs_str, 8 - len, "%03lu", nsecs_rem); 2469 len += printf(".%s", nsecs_str); 2470 } 2471 2472 printf(" us "); 2473 2474 /* Print remaining spaces to fit the row's width */ 2475 for (i = len; i < 7; i++) 2476 printf(" "); 2477 2478 printf("| "); 2479 } 2480 2481 static void 2482 print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec) 2483 { 2484 unsigned long long rettime, calltime; 2485 unsigned long long duration, depth; 2486 unsigned long long val; 2487 struct format_field *field; 2488 struct func_map *func; 2489 struct event *ret_event; 2490 int type; 2491 int i; 2492 2493 type = parse_common_type(ret_rec->data); 2494 ret_event = find_event(type); 2495 2496 field = find_field(ret_event, "rettime"); 2497 if (!field) 2498 die("can't find rettime in return graph"); 2499 rettime = read_size(ret_rec->data + field->offset, field->size); 2500 2501 field = find_field(ret_event, "calltime"); 2502 if (!field) 2503 die("can't find rettime in return graph"); 2504 calltime = read_size(ret_rec->data + field->offset, field->size); 2505 2506 duration = rettime - calltime; 2507 2508 /* Overhead */ 2509 print_graph_overhead(duration); 2510 2511 /* Duration */ 2512 print_graph_duration(duration); 2513 2514 field = find_field(event, "depth"); 2515 if (!field) 2516 die("can't find depth in entry graph"); 2517 depth = read_size(data + field->offset, field->size); 2518 2519 /* Function */ 2520 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) 2521 printf(" "); 2522 2523 field = find_field(event, "func"); 2524 if (!field) 2525 die("can't find func in entry graph"); 2526 val = read_size(data + field->offset, field->size); 2527 func = find_func(val); 2528 2529 if (func) 2530 printf("%s();", func->func); 2531 else 2532 printf("%llx();", val); 2533 } 2534 2535 static void print_graph_nested(struct event *event, void *data) 2536 { 2537 struct format_field *field; 2538 unsigned long long depth; 2539 unsigned long long val; 2540 struct func_map *func; 2541 int i; 2542 2543 /* No overhead */ 2544 print_graph_overhead(-1); 2545 2546 /* No time */ 2547 printf(" | "); 2548 2549 field = find_field(event, "depth"); 2550 if (!field) 2551 die("can't find depth in entry graph"); 2552 depth = read_size(data + field->offset, field->size); 2553 2554 /* Function */ 2555 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) 2556 printf(" "); 2557 2558 field = find_field(event, "func"); 2559 if (!field) 2560 die("can't find func in entry graph"); 2561 val = read_size(data + field->offset, field->size); 2562 func = find_func(val); 2563 2564 if (func) 2565 printf("%s() {", func->func); 2566 else 2567 printf("%llx() {", val); 2568 } 2569 2570 static void 2571 pretty_print_func_ent(void *data, int size, struct event *event, 2572 int cpu, int pid, const char *comm, 2573 unsigned long secs, unsigned long usecs) 2574 { 2575 struct format_field *field; 2576 struct record *rec; 2577 void *copy_data; 2578 unsigned long val; 2579 2580 printf("%5lu.%06lu | ", secs, usecs); 2581 2582 print_graph_cpu(cpu); 2583 print_graph_proc(pid, comm); 2584 2585 printf(" | "); 2586 2587 field = find_field(event, "func"); 2588 if (!field) 2589 die("function entry does not have func field"); 2590 2591 val = read_size(data + field->offset, field->size); 2592 2593 /* 2594 * peek_data may unmap the data pointer. Copy it first. 2595 */ 2596 copy_data = malloc_or_die(size); 2597 memcpy(copy_data, data, size); 2598 data = copy_data; 2599 2600 rec = trace_peek_data(cpu); 2601 if (rec) { 2602 rec = get_return_for_leaf(cpu, pid, val, rec); 2603 if (rec) { 2604 print_graph_entry_leaf(event, data, rec); 2605 goto out_free; 2606 } 2607 } 2608 print_graph_nested(event, data); 2609 out_free: 2610 free(data); 2611 } 2612 2613 static void 2614 pretty_print_func_ret(void *data, int size __unused, struct event *event, 2615 int cpu, int pid, const char *comm, 2616 unsigned long secs, unsigned long usecs) 2617 { 2618 unsigned long long rettime, calltime; 2619 unsigned long long duration, depth; 2620 struct format_field *field; 2621 int i; 2622 2623 printf("%5lu.%06lu | ", secs, usecs); 2624 2625 print_graph_cpu(cpu); 2626 print_graph_proc(pid, comm); 2627 2628 printf(" | "); 2629 2630 field = find_field(event, "rettime"); 2631 if (!field) 2632 die("can't find rettime in return graph"); 2633 rettime = read_size(data + field->offset, field->size); 2634 2635 field = find_field(event, "calltime"); 2636 if (!field) 2637 die("can't find calltime in return graph"); 2638 calltime = read_size(data + field->offset, field->size); 2639 2640 duration = rettime - calltime; 2641 2642 /* Overhead */ 2643 print_graph_overhead(duration); 2644 2645 /* Duration */ 2646 print_graph_duration(duration); 2647 2648 field = find_field(event, "depth"); 2649 if (!field) 2650 die("can't find depth in entry graph"); 2651 depth = read_size(data + field->offset, field->size); 2652 2653 /* Function */ 2654 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) 2655 printf(" "); 2656 2657 printf("}"); 2658 } 2659 2660 static void 2661 pretty_print_func_graph(void *data, int size, struct event *event, 2662 int cpu, int pid, const char *comm, 2663 unsigned long secs, unsigned long usecs) 2664 { 2665 if (event->flags & EVENT_FL_ISFUNCENT) 2666 pretty_print_func_ent(data, size, event, 2667 cpu, pid, comm, secs, usecs); 2668 else if (event->flags & EVENT_FL_ISFUNCRET) 2669 pretty_print_func_ret(data, size, event, 2670 cpu, pid, comm, secs, usecs); 2671 printf("\n"); 2672 } 2673 2674 void print_event(int cpu, void *data, int size, unsigned long long nsecs, 2675 char *comm) 2676 { 2677 struct event *event; 2678 unsigned long secs; 2679 unsigned long usecs; 2680 int type; 2681 int pid; 2682 2683 secs = nsecs / NSECS_PER_SEC; 2684 nsecs -= secs * NSECS_PER_SEC; 2685 usecs = nsecs / NSECS_PER_USEC; 2686 2687 type = parse_common_type(data); 2688 2689 event = find_event(type); 2690 if (!event) 2691 die("ug! no event found for type %d", type); 2692 2693 pid = parse_common_pid(data); 2694 2695 if (event->flags & (EVENT_FL_ISFUNCENT | EVENT_FL_ISFUNCRET)) 2696 return pretty_print_func_graph(data, size, event, cpu, 2697 pid, comm, secs, usecs); 2698 2699 printf("%16s-%-5d [%03d] %5lu.%06lu: %s: ", 2700 comm, pid, cpu, 2701 secs, usecs, event->name); 2702 2703 pretty_print(data, size, event); 2704 printf("\n"); 2705 } 2706 2707 static void print_fields(struct print_flag_sym *field) 2708 { 2709 printf("{ %s, %s }", field->value, field->str); 2710 if (field->next) { 2711 printf(", "); 2712 print_fields(field->next); 2713 } 2714 } 2715 2716 static void print_args(struct print_arg *args) 2717 { 2718 int print_paren = 1; 2719 2720 switch (args->type) { 2721 case PRINT_NULL: 2722 printf("null"); 2723 break; 2724 case PRINT_ATOM: 2725 printf("%s", args->atom.atom); 2726 break; 2727 case PRINT_FIELD: 2728 printf("REC->%s", args->field.name); 2729 break; 2730 case PRINT_FLAGS: 2731 printf("__print_flags("); 2732 print_args(args->flags.field); 2733 printf(", %s, ", args->flags.delim); 2734 print_fields(args->flags.flags); 2735 printf(")"); 2736 break; 2737 case PRINT_SYMBOL: 2738 printf("__print_symbolic("); 2739 print_args(args->symbol.field); 2740 printf(", "); 2741 print_fields(args->symbol.symbols); 2742 printf(")"); 2743 break; 2744 case PRINT_STRING: 2745 printf("__get_str(%s)", args->string.string); 2746 break; 2747 case PRINT_TYPE: 2748 printf("(%s)", args->typecast.type); 2749 print_args(args->typecast.item); 2750 break; 2751 case PRINT_OP: 2752 if (strcmp(args->op.op, ":") == 0) 2753 print_paren = 0; 2754 if (print_paren) 2755 printf("("); 2756 print_args(args->op.left); 2757 printf(" %s ", args->op.op); 2758 print_args(args->op.right); 2759 if (print_paren) 2760 printf(")"); 2761 break; 2762 default: 2763 /* we should warn... */ 2764 return; 2765 } 2766 if (args->next) { 2767 printf("\n"); 2768 print_args(args->next); 2769 } 2770 } 2771 2772 static void parse_header_field(char *type, 2773 int *offset, int *size) 2774 { 2775 char *token; 2776 2777 if (read_expected(EVENT_ITEM, (char *)"field") < 0) 2778 return; 2779 if (read_expected(EVENT_OP, (char *)":") < 0) 2780 return; 2781 /* type */ 2782 if (read_expect_type(EVENT_ITEM, &token) < 0) 2783 return; 2784 free_token(token); 2785 2786 if (read_expected(EVENT_ITEM, type) < 0) 2787 return; 2788 if (read_expected(EVENT_OP, (char *)";") < 0) 2789 return; 2790 if (read_expected(EVENT_ITEM, (char *)"offset") < 0) 2791 return; 2792 if (read_expected(EVENT_OP, (char *)":") < 0) 2793 return; 2794 if (read_expect_type(EVENT_ITEM, &token) < 0) 2795 return; 2796 *offset = atoi(token); 2797 free_token(token); 2798 if (read_expected(EVENT_OP, (char *)";") < 0) 2799 return; 2800 if (read_expected(EVENT_ITEM, (char *)"size") < 0) 2801 return; 2802 if (read_expected(EVENT_OP, (char *)":") < 0) 2803 return; 2804 if (read_expect_type(EVENT_ITEM, &token) < 0) 2805 return; 2806 *size = atoi(token); 2807 free_token(token); 2808 if (read_expected(EVENT_OP, (char *)";") < 0) 2809 return; 2810 if (read_expect_type(EVENT_NEWLINE, &token) < 0) 2811 return; 2812 free_token(token); 2813 } 2814 2815 int parse_header_page(char *buf, unsigned long size) 2816 { 2817 init_input_buf(buf, size); 2818 2819 parse_header_field((char *)"timestamp", &header_page_ts_offset, 2820 &header_page_ts_size); 2821 parse_header_field((char *)"commit", &header_page_size_offset, 2822 &header_page_size_size); 2823 parse_header_field((char *)"data", &header_page_data_offset, 2824 &header_page_data_size); 2825 2826 return 0; 2827 } 2828 2829 int parse_ftrace_file(char *buf, unsigned long size) 2830 { 2831 struct format_field *field; 2832 struct print_arg *arg, **list; 2833 struct event *event; 2834 int ret; 2835 2836 init_input_buf(buf, size); 2837 2838 event = alloc_event(); 2839 if (!event) 2840 return -ENOMEM; 2841 2842 event->flags |= EVENT_FL_ISFTRACE; 2843 2844 event->name = event_read_name(); 2845 if (!event->name) 2846 die("failed to read ftrace event name"); 2847 2848 if (strcmp(event->name, "function") == 0) 2849 event->flags |= EVENT_FL_ISFUNC; 2850 2851 else if (strcmp(event->name, "funcgraph_entry") == 0) 2852 event->flags |= EVENT_FL_ISFUNCENT; 2853 2854 else if (strcmp(event->name, "funcgraph_exit") == 0) 2855 event->flags |= EVENT_FL_ISFUNCRET; 2856 2857 else if (strcmp(event->name, "bprint") == 0) 2858 event->flags |= EVENT_FL_ISBPRINT; 2859 2860 event->id = event_read_id(); 2861 if (event->id < 0) 2862 die("failed to read ftrace event id"); 2863 2864 add_event(event); 2865 2866 ret = event_read_format(event); 2867 if (ret < 0) 2868 die("failed to read ftrace event format"); 2869 2870 ret = event_read_print(event); 2871 if (ret < 0) 2872 die("failed to read ftrace event print fmt"); 2873 2874 /* 2875 * The arguments for ftrace files are parsed by the fields. 2876 * Set up the fields as their arguments. 2877 */ 2878 list = &event->print_fmt.args; 2879 for (field = event->format.fields; field; field = field->next) { 2880 arg = malloc_or_die(sizeof(*arg)); 2881 memset(arg, 0, sizeof(*arg)); 2882 *list = arg; 2883 list = &arg->next; 2884 arg->type = PRINT_FIELD; 2885 arg->field.name = field->name; 2886 arg->field.field = field; 2887 } 2888 return 0; 2889 } 2890 2891 int parse_event_file(char *buf, unsigned long size, char *system__unused __unused) 2892 { 2893 struct event *event; 2894 int ret; 2895 2896 init_input_buf(buf, size); 2897 2898 event = alloc_event(); 2899 if (!event) 2900 return -ENOMEM; 2901 2902 event->name = event_read_name(); 2903 if (!event->name) 2904 die("failed to read event name"); 2905 2906 event->id = event_read_id(); 2907 if (event->id < 0) 2908 die("failed to read event id"); 2909 2910 ret = event_read_format(event); 2911 if (ret < 0) 2912 die("failed to read event format"); 2913 2914 ret = event_read_print(event); 2915 if (ret < 0) 2916 die("failed to read event print fmt"); 2917 2918 #define PRINT_ARGS 0 2919 if (PRINT_ARGS && event->print_fmt.args) 2920 print_args(event->print_fmt.args); 2921 2922 add_event(event); 2923 return 0; 2924 } 2925 2926 void parse_set_info(int nr_cpus, int long_sz) 2927 { 2928 cpus = nr_cpus; 2929 long_size = long_sz; 2930 } 2931