1 /* 2 * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com> 3 * 4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; version 2 of the License (not later!) 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 * 19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 20 * 21 * The parts for function graph printing was taken and modified from the 22 * Linux Kernel that were written by Frederic Weisbecker. 23 */ 24 #define _GNU_SOURCE 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <string.h> 28 #include <ctype.h> 29 #include <errno.h> 30 31 #undef _GNU_SOURCE 32 #include "../perf.h" 33 #include "util.h" 34 #include "trace-event.h" 35 36 int header_page_ts_offset; 37 int header_page_ts_size; 38 int header_page_size_offset; 39 int header_page_size_size; 40 int header_page_data_offset; 41 int header_page_data_size; 42 43 static char *input_buf; 44 static unsigned long long input_buf_ptr; 45 static unsigned long long input_buf_siz; 46 47 static int cpus; 48 static int long_size; 49 50 static void init_input_buf(char *buf, unsigned long long size) 51 { 52 input_buf = buf; 53 input_buf_siz = size; 54 input_buf_ptr = 0; 55 } 56 57 struct cmdline { 58 char *comm; 59 int pid; 60 }; 61 62 static struct cmdline *cmdlines; 63 static int cmdline_count; 64 65 static int cmdline_cmp(const void *a, const void *b) 66 { 67 const struct cmdline *ca = a; 68 const struct cmdline *cb = b; 69 70 if (ca->pid < cb->pid) 71 return -1; 72 if (ca->pid > cb->pid) 73 return 1; 74 75 return 0; 76 } 77 78 void parse_cmdlines(char *file, int size __unused) 79 { 80 struct cmdline_list { 81 struct cmdline_list *next; 82 char *comm; 83 int pid; 84 } *list = NULL, *item; 85 char *line; 86 char *next = NULL; 87 int i; 88 89 line = strtok_r(file, "\n", &next); 90 while (line) { 91 item = malloc_or_die(sizeof(*item)); 92 sscanf(line, "%d %as", &item->pid, 93 (float *)(void *)&item->comm); /* workaround gcc warning */ 94 item->next = list; 95 list = item; 96 line = strtok_r(NULL, "\n", &next); 97 cmdline_count++; 98 } 99 100 cmdlines = malloc_or_die(sizeof(*cmdlines) * cmdline_count); 101 102 i = 0; 103 while (list) { 104 cmdlines[i].pid = list->pid; 105 cmdlines[i].comm = list->comm; 106 i++; 107 item = list; 108 list = list->next; 109 free(item); 110 } 111 112 qsort(cmdlines, cmdline_count, sizeof(*cmdlines), cmdline_cmp); 113 } 114 115 static struct func_map { 116 unsigned long long addr; 117 char *func; 118 char *mod; 119 } *func_list; 120 static unsigned int func_count; 121 122 static int func_cmp(const void *a, const void *b) 123 { 124 const struct func_map *fa = a; 125 const struct func_map *fb = b; 126 127 if (fa->addr < fb->addr) 128 return -1; 129 if (fa->addr > fb->addr) 130 return 1; 131 132 return 0; 133 } 134 135 void parse_proc_kallsyms(char *file, unsigned int size __unused) 136 { 137 struct func_list { 138 struct func_list *next; 139 unsigned long long addr; 140 char *func; 141 char *mod; 142 } *list = NULL, *item; 143 char *line; 144 char *next = NULL; 145 char *addr_str; 146 char ch; 147 int ret; 148 int i; 149 150 line = strtok_r(file, "\n", &next); 151 while (line) { 152 item = malloc_or_die(sizeof(*item)); 153 item->mod = NULL; 154 ret = sscanf(line, "%as %c %as\t[%as", 155 (float *)(void *)&addr_str, /* workaround gcc warning */ 156 &ch, 157 (float *)(void *)&item->func, 158 (float *)(void *)&item->mod); 159 item->addr = strtoull(addr_str, NULL, 16); 160 free(addr_str); 161 162 /* truncate the extra ']' */ 163 if (item->mod) 164 item->mod[strlen(item->mod) - 1] = 0; 165 166 167 item->next = list; 168 list = item; 169 line = strtok_r(NULL, "\n", &next); 170 func_count++; 171 } 172 173 func_list = malloc_or_die(sizeof(*func_list) * func_count + 1); 174 175 i = 0; 176 while (list) { 177 func_list[i].func = list->func; 178 func_list[i].addr = list->addr; 179 func_list[i].mod = list->mod; 180 i++; 181 item = list; 182 list = list->next; 183 free(item); 184 } 185 186 qsort(func_list, func_count, sizeof(*func_list), func_cmp); 187 188 /* 189 * Add a special record at the end. 190 */ 191 func_list[func_count].func = NULL; 192 func_list[func_count].addr = 0; 193 func_list[func_count].mod = NULL; 194 } 195 196 /* 197 * We are searching for a record in between, not an exact 198 * match. 199 */ 200 static int func_bcmp(const void *a, const void *b) 201 { 202 const struct func_map *fa = a; 203 const struct func_map *fb = b; 204 205 if ((fa->addr == fb->addr) || 206 207 (fa->addr > fb->addr && 208 fa->addr < (fb+1)->addr)) 209 return 0; 210 211 if (fa->addr < fb->addr) 212 return -1; 213 214 return 1; 215 } 216 217 static struct func_map *find_func(unsigned long long addr) 218 { 219 struct func_map *func; 220 struct func_map key; 221 222 key.addr = addr; 223 224 func = bsearch(&key, func_list, func_count, sizeof(*func_list), 225 func_bcmp); 226 227 return func; 228 } 229 230 void print_funcs(void) 231 { 232 int i; 233 234 for (i = 0; i < (int)func_count; i++) { 235 printf("%016llx %s", 236 func_list[i].addr, 237 func_list[i].func); 238 if (func_list[i].mod) 239 printf(" [%s]\n", func_list[i].mod); 240 else 241 printf("\n"); 242 } 243 } 244 245 static struct printk_map { 246 unsigned long long addr; 247 char *printk; 248 } *printk_list; 249 static unsigned int printk_count; 250 251 static int printk_cmp(const void *a, const void *b) 252 { 253 const struct func_map *fa = a; 254 const struct func_map *fb = b; 255 256 if (fa->addr < fb->addr) 257 return -1; 258 if (fa->addr > fb->addr) 259 return 1; 260 261 return 0; 262 } 263 264 static struct printk_map *find_printk(unsigned long long addr) 265 { 266 struct printk_map *printk; 267 struct printk_map key; 268 269 key.addr = addr; 270 271 printk = bsearch(&key, printk_list, printk_count, sizeof(*printk_list), 272 printk_cmp); 273 274 return printk; 275 } 276 277 void parse_ftrace_printk(char *file, unsigned int size __unused) 278 { 279 struct printk_list { 280 struct printk_list *next; 281 unsigned long long addr; 282 char *printk; 283 } *list = NULL, *item; 284 char *line; 285 char *next = NULL; 286 char *addr_str; 287 int ret; 288 int i; 289 290 line = strtok_r(file, "\n", &next); 291 while (line) { 292 item = malloc_or_die(sizeof(*item)); 293 ret = sscanf(line, "%as : %as", 294 (float *)(void *)&addr_str, /* workaround gcc warning */ 295 (float *)(void *)&item->printk); 296 item->addr = strtoull(addr_str, NULL, 16); 297 free(addr_str); 298 299 item->next = list; 300 list = item; 301 line = strtok_r(NULL, "\n", &next); 302 printk_count++; 303 } 304 305 printk_list = malloc_or_die(sizeof(*printk_list) * printk_count + 1); 306 307 i = 0; 308 while (list) { 309 printk_list[i].printk = list->printk; 310 printk_list[i].addr = list->addr; 311 i++; 312 item = list; 313 list = list->next; 314 free(item); 315 } 316 317 qsort(printk_list, printk_count, sizeof(*printk_list), printk_cmp); 318 } 319 320 void print_printk(void) 321 { 322 int i; 323 324 for (i = 0; i < (int)printk_count; i++) { 325 printf("%016llx %s\n", 326 printk_list[i].addr, 327 printk_list[i].printk); 328 } 329 } 330 331 static struct event *alloc_event(void) 332 { 333 struct event *event; 334 335 event = malloc_or_die(sizeof(*event)); 336 memset(event, 0, sizeof(*event)); 337 338 return event; 339 } 340 341 enum event_type { 342 EVENT_ERROR, 343 EVENT_NONE, 344 EVENT_SPACE, 345 EVENT_NEWLINE, 346 EVENT_OP, 347 EVENT_DELIM, 348 EVENT_ITEM, 349 EVENT_DQUOTE, 350 EVENT_SQUOTE, 351 }; 352 353 static struct event *event_list; 354 355 static void add_event(struct event *event) 356 { 357 event->next = event_list; 358 event_list = event; 359 } 360 361 static int event_item_type(enum event_type type) 362 { 363 switch (type) { 364 case EVENT_ITEM ... EVENT_SQUOTE: 365 return 1; 366 case EVENT_ERROR ... EVENT_DELIM: 367 default: 368 return 0; 369 } 370 } 371 372 static void free_arg(struct print_arg *arg) 373 { 374 if (!arg) 375 return; 376 377 switch (arg->type) { 378 case PRINT_ATOM: 379 if (arg->atom.atom) 380 free(arg->atom.atom); 381 break; 382 case PRINT_NULL: 383 case PRINT_FIELD ... PRINT_OP: 384 default: 385 /* todo */ 386 break; 387 } 388 389 free(arg); 390 } 391 392 static enum event_type get_type(int ch) 393 { 394 if (ch == '\n') 395 return EVENT_NEWLINE; 396 if (isspace(ch)) 397 return EVENT_SPACE; 398 if (isalnum(ch) || ch == '_') 399 return EVENT_ITEM; 400 if (ch == '\'') 401 return EVENT_SQUOTE; 402 if (ch == '"') 403 return EVENT_DQUOTE; 404 if (!isprint(ch)) 405 return EVENT_NONE; 406 if (ch == '(' || ch == ')' || ch == ',') 407 return EVENT_DELIM; 408 409 return EVENT_OP; 410 } 411 412 static int __read_char(void) 413 { 414 if (input_buf_ptr >= input_buf_siz) 415 return -1; 416 417 return input_buf[input_buf_ptr++]; 418 } 419 420 static int __peek_char(void) 421 { 422 if (input_buf_ptr >= input_buf_siz) 423 return -1; 424 425 return input_buf[input_buf_ptr]; 426 } 427 428 static enum event_type __read_token(char **tok) 429 { 430 char buf[BUFSIZ]; 431 int ch, last_ch, quote_ch, next_ch; 432 int i = 0; 433 int tok_size = 0; 434 enum event_type type; 435 436 *tok = NULL; 437 438 439 ch = __read_char(); 440 if (ch < 0) 441 return EVENT_NONE; 442 443 type = get_type(ch); 444 if (type == EVENT_NONE) 445 return type; 446 447 buf[i++] = ch; 448 449 switch (type) { 450 case EVENT_NEWLINE: 451 case EVENT_DELIM: 452 *tok = malloc_or_die(2); 453 (*tok)[0] = ch; 454 (*tok)[1] = 0; 455 return type; 456 457 case EVENT_OP: 458 switch (ch) { 459 case '-': 460 next_ch = __peek_char(); 461 if (next_ch == '>') { 462 buf[i++] = __read_char(); 463 break; 464 } 465 /* fall through */ 466 case '+': 467 case '|': 468 case '&': 469 case '>': 470 case '<': 471 last_ch = ch; 472 ch = __peek_char(); 473 if (ch != last_ch) 474 goto test_equal; 475 buf[i++] = __read_char(); 476 switch (last_ch) { 477 case '>': 478 case '<': 479 goto test_equal; 480 default: 481 break; 482 } 483 break; 484 case '!': 485 case '=': 486 goto test_equal; 487 default: /* what should we do instead? */ 488 break; 489 } 490 buf[i] = 0; 491 *tok = strdup(buf); 492 return type; 493 494 test_equal: 495 ch = __peek_char(); 496 if (ch == '=') 497 buf[i++] = __read_char(); 498 break; 499 500 case EVENT_DQUOTE: 501 case EVENT_SQUOTE: 502 /* don't keep quotes */ 503 i--; 504 quote_ch = ch; 505 last_ch = 0; 506 do { 507 if (i == (BUFSIZ - 1)) { 508 buf[i] = 0; 509 if (*tok) { 510 *tok = realloc(*tok, tok_size + BUFSIZ); 511 if (!*tok) 512 return EVENT_NONE; 513 strcat(*tok, buf); 514 } else 515 *tok = strdup(buf); 516 517 if (!*tok) 518 return EVENT_NONE; 519 tok_size += BUFSIZ; 520 i = 0; 521 } 522 last_ch = ch; 523 ch = __read_char(); 524 buf[i++] = ch; 525 } 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 arg->string.offset = -1; 1552 1553 if (read_expected(EVENT_DELIM, (char *)")") < 0) 1554 return EVENT_ERROR; 1555 1556 type = read_token(&token); 1557 *tok = token; 1558 1559 return type; 1560 fail: 1561 free_token(token); 1562 return EVENT_ERROR; 1563 } 1564 1565 enum event_type 1566 process_arg_token(struct event *event, struct print_arg *arg, 1567 char **tok, enum event_type type) 1568 { 1569 char *token; 1570 char *atom; 1571 1572 token = *tok; 1573 1574 switch (type) { 1575 case EVENT_ITEM: 1576 if (strcmp(token, "REC") == 0) { 1577 free_token(token); 1578 type = process_entry(event, arg, &token); 1579 } else if (strcmp(token, "__print_flags") == 0) { 1580 free_token(token); 1581 type = process_flags(event, arg, &token); 1582 } else if (strcmp(token, "__print_symbolic") == 0) { 1583 free_token(token); 1584 type = process_symbols(event, arg, &token); 1585 } else if (strcmp(token, "__get_str") == 0) { 1586 free_token(token); 1587 type = process_str(event, arg, &token); 1588 } else { 1589 atom = token; 1590 /* test the next token */ 1591 type = read_token_item(&token); 1592 1593 /* atoms can be more than one token long */ 1594 while (type == EVENT_ITEM) { 1595 atom = realloc(atom, strlen(atom) + strlen(token) + 2); 1596 strcat(atom, " "); 1597 strcat(atom, token); 1598 free_token(token); 1599 type = read_token_item(&token); 1600 } 1601 1602 /* todo, test for function */ 1603 1604 arg->type = PRINT_ATOM; 1605 arg->atom.atom = atom; 1606 } 1607 break; 1608 case EVENT_DQUOTE: 1609 case EVENT_SQUOTE: 1610 arg->type = PRINT_ATOM; 1611 arg->atom.atom = token; 1612 type = read_token_item(&token); 1613 break; 1614 case EVENT_DELIM: 1615 if (strcmp(token, "(") == 0) { 1616 free_token(token); 1617 type = process_paren(event, arg, &token); 1618 break; 1619 } 1620 case EVENT_OP: 1621 /* handle single ops */ 1622 arg->type = PRINT_OP; 1623 arg->op.op = token; 1624 arg->op.left = NULL; 1625 type = process_op(event, arg, &token); 1626 1627 break; 1628 1629 case EVENT_ERROR ... EVENT_NEWLINE: 1630 default: 1631 die("unexpected type %d", type); 1632 } 1633 *tok = token; 1634 1635 return type; 1636 } 1637 1638 static int event_read_print_args(struct event *event, struct print_arg **list) 1639 { 1640 enum event_type type; 1641 struct print_arg *arg; 1642 char *token; 1643 int args = 0; 1644 1645 do { 1646 arg = malloc_or_die(sizeof(*arg)); 1647 memset(arg, 0, sizeof(*arg)); 1648 1649 type = process_arg(event, arg, &token); 1650 1651 if (type == EVENT_ERROR) { 1652 free_arg(arg); 1653 return -1; 1654 } 1655 1656 *list = arg; 1657 args++; 1658 1659 if (type == EVENT_OP) { 1660 type = process_op(event, arg, &token); 1661 list = &arg->next; 1662 continue; 1663 } 1664 1665 if (type == EVENT_DELIM && strcmp(token, ",") == 0) { 1666 free_token(token); 1667 *list = arg; 1668 list = &arg->next; 1669 continue; 1670 } 1671 break; 1672 } while (type != EVENT_NONE); 1673 1674 if (type != EVENT_NONE) 1675 free_token(token); 1676 1677 return args; 1678 } 1679 1680 static int event_read_print(struct event *event) 1681 { 1682 enum event_type type; 1683 char *token; 1684 int ret; 1685 1686 if (read_expected_item(EVENT_ITEM, (char *)"print") < 0) 1687 return -1; 1688 1689 if (read_expected(EVENT_ITEM, (char *)"fmt") < 0) 1690 return -1; 1691 1692 if (read_expected(EVENT_OP, (char *)":") < 0) 1693 return -1; 1694 1695 if (read_expect_type(EVENT_DQUOTE, &token) < 0) 1696 goto fail; 1697 1698 event->print_fmt.format = token; 1699 event->print_fmt.args = NULL; 1700 1701 /* ok to have no arg */ 1702 type = read_token_item(&token); 1703 1704 if (type == EVENT_NONE) 1705 return 0; 1706 1707 if (test_type_token(type, token, EVENT_DELIM, (char *)",")) 1708 goto fail; 1709 1710 free_token(token); 1711 1712 ret = event_read_print_args(event, &event->print_fmt.args); 1713 if (ret < 0) 1714 return -1; 1715 1716 return 0; 1717 1718 fail: 1719 free_token(token); 1720 return -1; 1721 } 1722 1723 static struct format_field * 1724 find_common_field(struct event *event, const char *name) 1725 { 1726 struct format_field *format; 1727 1728 for (format = event->format.common_fields; 1729 format; format = format->next) { 1730 if (strcmp(format->name, name) == 0) 1731 break; 1732 } 1733 1734 return format; 1735 } 1736 1737 static struct format_field * 1738 find_field(struct event *event, const char *name) 1739 { 1740 struct format_field *format; 1741 1742 for (format = event->format.fields; 1743 format; format = format->next) { 1744 if (strcmp(format->name, name) == 0) 1745 break; 1746 } 1747 1748 return format; 1749 } 1750 1751 static struct format_field * 1752 find_any_field(struct event *event, const char *name) 1753 { 1754 struct format_field *format; 1755 1756 format = find_common_field(event, name); 1757 if (format) 1758 return format; 1759 return find_field(event, name); 1760 } 1761 1762 static unsigned long long read_size(void *ptr, int size) 1763 { 1764 switch (size) { 1765 case 1: 1766 return *(unsigned char *)ptr; 1767 case 2: 1768 return data2host2(ptr); 1769 case 4: 1770 return data2host4(ptr); 1771 case 8: 1772 return data2host8(ptr); 1773 default: 1774 /* BUG! */ 1775 return 0; 1776 } 1777 } 1778 1779 unsigned long long 1780 raw_field_value(struct event *event, const char *name, void *data) 1781 { 1782 struct format_field *field; 1783 1784 field = find_any_field(event, name); 1785 if (!field) 1786 return 0ULL; 1787 1788 return read_size(data + field->offset, field->size); 1789 } 1790 1791 void *raw_field_ptr(struct event *event, const char *name, void *data) 1792 { 1793 struct format_field *field; 1794 1795 field = find_any_field(event, name); 1796 if (!field) 1797 return NULL; 1798 1799 return data + field->offset; 1800 } 1801 1802 static int get_common_info(const char *type, int *offset, int *size) 1803 { 1804 struct event *event; 1805 struct format_field *field; 1806 1807 /* 1808 * All events should have the same common elements. 1809 * Pick any event to find where the type is; 1810 */ 1811 if (!event_list) 1812 die("no event_list!"); 1813 1814 event = event_list; 1815 field = find_common_field(event, type); 1816 if (!field) 1817 die("field '%s' not found", type); 1818 1819 *offset = field->offset; 1820 *size = field->size; 1821 1822 return 0; 1823 } 1824 1825 int trace_parse_common_type(void *data) 1826 { 1827 static int type_offset; 1828 static int type_size; 1829 int ret; 1830 1831 if (!type_size) { 1832 ret = get_common_info("common_type", 1833 &type_offset, 1834 &type_size); 1835 if (ret < 0) 1836 return ret; 1837 } 1838 return read_size(data + type_offset, type_size); 1839 } 1840 1841 static int parse_common_pid(void *data) 1842 { 1843 static int pid_offset; 1844 static int pid_size; 1845 int ret; 1846 1847 if (!pid_size) { 1848 ret = get_common_info("common_pid", 1849 &pid_offset, 1850 &pid_size); 1851 if (ret < 0) 1852 return ret; 1853 } 1854 1855 return read_size(data + pid_offset, pid_size); 1856 } 1857 1858 struct event *trace_find_event(int id) 1859 { 1860 struct event *event; 1861 1862 for (event = event_list; event; event = event->next) { 1863 if (event->id == id) 1864 break; 1865 } 1866 return event; 1867 } 1868 1869 static unsigned long long eval_num_arg(void *data, int size, 1870 struct event *event, struct print_arg *arg) 1871 { 1872 unsigned long long val = 0; 1873 unsigned long long left, right; 1874 1875 switch (arg->type) { 1876 case PRINT_NULL: 1877 /* ?? */ 1878 return 0; 1879 case PRINT_ATOM: 1880 return strtoull(arg->atom.atom, NULL, 0); 1881 case PRINT_FIELD: 1882 if (!arg->field.field) { 1883 arg->field.field = find_any_field(event, arg->field.name); 1884 if (!arg->field.field) 1885 die("field %s not found", arg->field.name); 1886 } 1887 /* must be a number */ 1888 val = read_size(data + arg->field.field->offset, 1889 arg->field.field->size); 1890 break; 1891 case PRINT_FLAGS: 1892 case PRINT_SYMBOL: 1893 break; 1894 case PRINT_TYPE: 1895 return eval_num_arg(data, size, event, arg->typecast.item); 1896 case PRINT_STRING: 1897 return 0; 1898 break; 1899 case PRINT_OP: 1900 left = eval_num_arg(data, size, event, arg->op.left); 1901 right = eval_num_arg(data, size, event, arg->op.right); 1902 switch (arg->op.op[0]) { 1903 case '|': 1904 if (arg->op.op[1]) 1905 val = left || right; 1906 else 1907 val = left | right; 1908 break; 1909 case '&': 1910 if (arg->op.op[1]) 1911 val = left && right; 1912 else 1913 val = left & right; 1914 break; 1915 case '<': 1916 switch (arg->op.op[1]) { 1917 case 0: 1918 val = left < right; 1919 break; 1920 case '<': 1921 val = left << right; 1922 break; 1923 case '=': 1924 val = left <= right; 1925 break; 1926 default: 1927 die("unknown op '%s'", arg->op.op); 1928 } 1929 break; 1930 case '>': 1931 switch (arg->op.op[1]) { 1932 case 0: 1933 val = left > right; 1934 break; 1935 case '>': 1936 val = left >> right; 1937 break; 1938 case '=': 1939 val = left >= right; 1940 break; 1941 default: 1942 die("unknown op '%s'", arg->op.op); 1943 } 1944 break; 1945 case '=': 1946 if (arg->op.op[1] != '=') 1947 die("unknown op '%s'", arg->op.op); 1948 val = left == right; 1949 break; 1950 default: 1951 die("unknown op '%s'", arg->op.op); 1952 } 1953 break; 1954 default: /* not sure what to do there */ 1955 return 0; 1956 } 1957 return val; 1958 } 1959 1960 struct flag { 1961 const char *name; 1962 unsigned long long value; 1963 }; 1964 1965 static const struct flag flags[] = { 1966 { "HI_SOFTIRQ", 0 }, 1967 { "TIMER_SOFTIRQ", 1 }, 1968 { "NET_TX_SOFTIRQ", 2 }, 1969 { "NET_RX_SOFTIRQ", 3 }, 1970 { "BLOCK_SOFTIRQ", 4 }, 1971 { "TASKLET_SOFTIRQ", 5 }, 1972 { "SCHED_SOFTIRQ", 6 }, 1973 { "HRTIMER_SOFTIRQ", 7 }, 1974 { "RCU_SOFTIRQ", 8 }, 1975 1976 { "HRTIMER_NORESTART", 0 }, 1977 { "HRTIMER_RESTART", 1 }, 1978 }; 1979 1980 static unsigned long long eval_flag(const char *flag) 1981 { 1982 int i; 1983 1984 /* 1985 * Some flags in the format files do not get converted. 1986 * If the flag is not numeric, see if it is something that 1987 * we already know about. 1988 */ 1989 if (isdigit(flag[0])) 1990 return strtoull(flag, NULL, 0); 1991 1992 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) 1993 if (strcmp(flags[i].name, flag) == 0) 1994 return flags[i].value; 1995 1996 return 0; 1997 } 1998 1999 static void print_str_arg(void *data, int size, 2000 struct event *event, struct print_arg *arg) 2001 { 2002 struct print_flag_sym *flag; 2003 unsigned long long val, fval; 2004 char *str; 2005 int print; 2006 2007 switch (arg->type) { 2008 case PRINT_NULL: 2009 /* ?? */ 2010 return; 2011 case PRINT_ATOM: 2012 printf("%s", arg->atom.atom); 2013 return; 2014 case PRINT_FIELD: 2015 if (!arg->field.field) { 2016 arg->field.field = find_any_field(event, arg->field.name); 2017 if (!arg->field.field) 2018 die("field %s not found", arg->field.name); 2019 } 2020 str = malloc_or_die(arg->field.field->size + 1); 2021 memcpy(str, data + arg->field.field->offset, 2022 arg->field.field->size); 2023 str[arg->field.field->size] = 0; 2024 printf("%s", str); 2025 free(str); 2026 break; 2027 case PRINT_FLAGS: 2028 val = eval_num_arg(data, size, event, arg->flags.field); 2029 print = 0; 2030 for (flag = arg->flags.flags; flag; flag = flag->next) { 2031 fval = eval_flag(flag->value); 2032 if (!val && !fval) { 2033 printf("%s", flag->str); 2034 break; 2035 } 2036 if (fval && (val & fval) == fval) { 2037 if (print && arg->flags.delim) 2038 printf("%s", arg->flags.delim); 2039 printf("%s", flag->str); 2040 print = 1; 2041 val &= ~fval; 2042 } 2043 } 2044 break; 2045 case PRINT_SYMBOL: 2046 val = eval_num_arg(data, size, event, arg->symbol.field); 2047 for (flag = arg->symbol.symbols; flag; flag = flag->next) { 2048 fval = eval_flag(flag->value); 2049 if (val == fval) { 2050 printf("%s", flag->str); 2051 break; 2052 } 2053 } 2054 break; 2055 2056 case PRINT_TYPE: 2057 break; 2058 case PRINT_STRING: { 2059 int str_offset; 2060 2061 if (arg->string.offset == -1) { 2062 struct format_field *f; 2063 2064 f = find_any_field(event, arg->string.string); 2065 arg->string.offset = f->offset; 2066 } 2067 str_offset = *(int *)(data + arg->string.offset); 2068 str_offset &= 0xffff; 2069 printf("%s", ((char *)data) + str_offset); 2070 break; 2071 } 2072 case PRINT_OP: 2073 /* 2074 * The only op for string should be ? : 2075 */ 2076 if (arg->op.op[0] != '?') 2077 return; 2078 val = eval_num_arg(data, size, event, arg->op.left); 2079 if (val) 2080 print_str_arg(data, size, event, arg->op.right->op.left); 2081 else 2082 print_str_arg(data, size, event, arg->op.right->op.right); 2083 break; 2084 default: 2085 /* well... */ 2086 break; 2087 } 2088 } 2089 2090 static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event *event) 2091 { 2092 static struct format_field *field, *ip_field; 2093 struct print_arg *args, *arg, **next; 2094 unsigned long long ip, val; 2095 char *ptr; 2096 void *bptr; 2097 2098 if (!field) { 2099 field = find_field(event, "buf"); 2100 if (!field) 2101 die("can't find buffer field for binary printk"); 2102 ip_field = find_field(event, "ip"); 2103 if (!ip_field) 2104 die("can't find ip field for binary printk"); 2105 } 2106 2107 ip = read_size(data + ip_field->offset, ip_field->size); 2108 2109 /* 2110 * The first arg is the IP pointer. 2111 */ 2112 args = malloc_or_die(sizeof(*args)); 2113 arg = args; 2114 arg->next = NULL; 2115 next = &arg->next; 2116 2117 arg->type = PRINT_ATOM; 2118 arg->atom.atom = malloc_or_die(32); 2119 sprintf(arg->atom.atom, "%lld", ip); 2120 2121 /* skip the first "%pf : " */ 2122 for (ptr = fmt + 6, bptr = data + field->offset; 2123 bptr < data + size && *ptr; ptr++) { 2124 int ls = 0; 2125 2126 if (*ptr == '%') { 2127 process_again: 2128 ptr++; 2129 switch (*ptr) { 2130 case '%': 2131 break; 2132 case 'l': 2133 ls++; 2134 goto process_again; 2135 case 'L': 2136 ls = 2; 2137 goto process_again; 2138 case '0' ... '9': 2139 goto process_again; 2140 case 'p': 2141 ls = 1; 2142 /* fall through */ 2143 case 'd': 2144 case 'u': 2145 case 'x': 2146 case 'i': 2147 bptr = (void *)(((unsigned long)bptr + (long_size - 1)) & 2148 ~(long_size - 1)); 2149 switch (ls) { 2150 case 0: 2151 case 1: 2152 ls = long_size; 2153 break; 2154 case 2: 2155 ls = 8; 2156 default: 2157 break; 2158 } 2159 val = read_size(bptr, ls); 2160 bptr += ls; 2161 arg = malloc_or_die(sizeof(*arg)); 2162 arg->next = NULL; 2163 arg->type = PRINT_ATOM; 2164 arg->atom.atom = malloc_or_die(32); 2165 sprintf(arg->atom.atom, "%lld", val); 2166 *next = arg; 2167 next = &arg->next; 2168 break; 2169 case 's': 2170 arg = malloc_or_die(sizeof(*arg)); 2171 arg->next = NULL; 2172 arg->type = PRINT_STRING; 2173 arg->string.string = strdup(bptr); 2174 bptr += strlen(bptr) + 1; 2175 *next = arg; 2176 next = &arg->next; 2177 default: 2178 break; 2179 } 2180 } 2181 } 2182 2183 return args; 2184 } 2185 2186 static void free_args(struct print_arg *args) 2187 { 2188 struct print_arg *next; 2189 2190 while (args) { 2191 next = args->next; 2192 2193 if (args->type == PRINT_ATOM) 2194 free(args->atom.atom); 2195 else 2196 free(args->string.string); 2197 free(args); 2198 args = next; 2199 } 2200 } 2201 2202 static char *get_bprint_format(void *data, int size __unused, struct event *event) 2203 { 2204 unsigned long long addr; 2205 static struct format_field *field; 2206 struct printk_map *printk; 2207 char *format; 2208 char *p; 2209 2210 if (!field) { 2211 field = find_field(event, "fmt"); 2212 if (!field) 2213 die("can't find format field for binary printk"); 2214 printf("field->offset = %d size=%d\n", field->offset, field->size); 2215 } 2216 2217 addr = read_size(data + field->offset, field->size); 2218 2219 printk = find_printk(addr); 2220 if (!printk) { 2221 format = malloc_or_die(45); 2222 sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n", 2223 addr); 2224 return format; 2225 } 2226 2227 p = printk->printk; 2228 /* Remove any quotes. */ 2229 if (*p == '"') 2230 p++; 2231 format = malloc_or_die(strlen(p) + 10); 2232 sprintf(format, "%s : %s", "%pf", p); 2233 /* remove ending quotes and new line since we will add one too */ 2234 p = format + strlen(format) - 1; 2235 if (*p == '"') 2236 *p = 0; 2237 2238 p -= 2; 2239 if (strcmp(p, "\\n") == 0) 2240 *p = 0; 2241 2242 return format; 2243 } 2244 2245 static void pretty_print(void *data, int size, struct event *event) 2246 { 2247 struct print_fmt *print_fmt = &event->print_fmt; 2248 struct print_arg *arg = print_fmt->args; 2249 struct print_arg *args = NULL; 2250 const char *ptr = print_fmt->format; 2251 unsigned long long val; 2252 struct func_map *func; 2253 const char *saveptr; 2254 char *bprint_fmt = NULL; 2255 char format[32]; 2256 int show_func; 2257 int len; 2258 int ls; 2259 2260 if (event->flags & EVENT_FL_ISFUNC) 2261 ptr = " %pF <-- %pF"; 2262 2263 if (event->flags & EVENT_FL_ISBPRINT) { 2264 bprint_fmt = get_bprint_format(data, size, event); 2265 args = make_bprint_args(bprint_fmt, data, size, event); 2266 arg = args; 2267 ptr = bprint_fmt; 2268 } 2269 2270 for (; *ptr; ptr++) { 2271 ls = 0; 2272 if (*ptr == '%') { 2273 saveptr = ptr; 2274 show_func = 0; 2275 cont_process: 2276 ptr++; 2277 switch (*ptr) { 2278 case '%': 2279 printf("%%"); 2280 break; 2281 case 'l': 2282 ls++; 2283 goto cont_process; 2284 case 'L': 2285 ls = 2; 2286 goto cont_process; 2287 case 'z': 2288 case 'Z': 2289 case '0' ... '9': 2290 goto cont_process; 2291 case 'p': 2292 if (long_size == 4) 2293 ls = 1; 2294 else 2295 ls = 2; 2296 2297 if (*(ptr+1) == 'F' || 2298 *(ptr+1) == 'f') { 2299 ptr++; 2300 show_func = *ptr; 2301 } 2302 2303 /* fall through */ 2304 case 'd': 2305 case 'i': 2306 case 'x': 2307 case 'X': 2308 case 'u': 2309 if (!arg) 2310 die("no argument match"); 2311 2312 len = ((unsigned long)ptr + 1) - 2313 (unsigned long)saveptr; 2314 2315 /* should never happen */ 2316 if (len > 32) 2317 die("bad format!"); 2318 2319 memcpy(format, saveptr, len); 2320 format[len] = 0; 2321 2322 val = eval_num_arg(data, size, event, arg); 2323 arg = arg->next; 2324 2325 if (show_func) { 2326 func = find_func(val); 2327 if (func) { 2328 printf("%s", func->func); 2329 if (show_func == 'F') 2330 printf("+0x%llx", 2331 val - func->addr); 2332 break; 2333 } 2334 } 2335 switch (ls) { 2336 case 0: 2337 printf(format, (int)val); 2338 break; 2339 case 1: 2340 printf(format, (long)val); 2341 break; 2342 case 2: 2343 printf(format, (long long)val); 2344 break; 2345 default: 2346 die("bad count (%d)", ls); 2347 } 2348 break; 2349 case 's': 2350 if (!arg) 2351 die("no matching argument"); 2352 2353 print_str_arg(data, size, event, arg); 2354 arg = arg->next; 2355 break; 2356 default: 2357 printf(">%c<", *ptr); 2358 2359 } 2360 } else 2361 printf("%c", *ptr); 2362 } 2363 2364 if (args) { 2365 free_args(args); 2366 free(bprint_fmt); 2367 } 2368 } 2369 2370 static inline int log10_cpu(int nb) 2371 { 2372 if (nb / 100) 2373 return 3; 2374 if (nb / 10) 2375 return 2; 2376 return 1; 2377 } 2378 2379 /* taken from Linux, written by Frederic Weisbecker */ 2380 static void print_graph_cpu(int cpu) 2381 { 2382 int i; 2383 int log10_this = log10_cpu(cpu); 2384 int log10_all = log10_cpu(cpus); 2385 2386 2387 /* 2388 * Start with a space character - to make it stand out 2389 * to the right a bit when trace output is pasted into 2390 * email: 2391 */ 2392 printf(" "); 2393 2394 /* 2395 * Tricky - we space the CPU field according to the max 2396 * number of online CPUs. On a 2-cpu system it would take 2397 * a maximum of 1 digit - on a 128 cpu system it would 2398 * take up to 3 digits: 2399 */ 2400 for (i = 0; i < log10_all - log10_this; i++) 2401 printf(" "); 2402 2403 printf("%d) ", cpu); 2404 } 2405 2406 #define TRACE_GRAPH_PROCINFO_LENGTH 14 2407 #define TRACE_GRAPH_INDENT 2 2408 2409 static void print_graph_proc(int pid, const char *comm) 2410 { 2411 /* sign + log10(MAX_INT) + '\0' */ 2412 char pid_str[11]; 2413 int spaces = 0; 2414 int len; 2415 int i; 2416 2417 sprintf(pid_str, "%d", pid); 2418 2419 /* 1 stands for the "-" character */ 2420 len = strlen(comm) + strlen(pid_str) + 1; 2421 2422 if (len < TRACE_GRAPH_PROCINFO_LENGTH) 2423 spaces = TRACE_GRAPH_PROCINFO_LENGTH - len; 2424 2425 /* First spaces to align center */ 2426 for (i = 0; i < spaces / 2; i++) 2427 printf(" "); 2428 2429 printf("%s-%s", comm, pid_str); 2430 2431 /* Last spaces to align center */ 2432 for (i = 0; i < spaces - (spaces / 2); i++) 2433 printf(" "); 2434 } 2435 2436 static struct record * 2437 get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func, 2438 struct record *next) 2439 { 2440 struct format_field *field; 2441 struct event *event; 2442 unsigned long val; 2443 int type; 2444 int pid; 2445 2446 type = trace_parse_common_type(next->data); 2447 event = trace_find_event(type); 2448 if (!event) 2449 return NULL; 2450 2451 if (!(event->flags & EVENT_FL_ISFUNCRET)) 2452 return NULL; 2453 2454 pid = parse_common_pid(next->data); 2455 field = find_field(event, "func"); 2456 if (!field) 2457 die("function return does not have field func"); 2458 2459 val = read_size(next->data + field->offset, field->size); 2460 2461 if (cur_pid != pid || cur_func != val) 2462 return NULL; 2463 2464 /* this is a leaf, now advance the iterator */ 2465 return trace_read_data(cpu); 2466 } 2467 2468 /* Signal a overhead of time execution to the output */ 2469 static void print_graph_overhead(unsigned long long duration) 2470 { 2471 /* Non nested entry or return */ 2472 if (duration == ~0ULL) 2473 return (void)printf(" "); 2474 2475 /* Duration exceeded 100 msecs */ 2476 if (duration > 100000ULL) 2477 return (void)printf("! "); 2478 2479 /* Duration exceeded 10 msecs */ 2480 if (duration > 10000ULL) 2481 return (void)printf("+ "); 2482 2483 printf(" "); 2484 } 2485 2486 static void print_graph_duration(unsigned long long duration) 2487 { 2488 unsigned long usecs = duration / 1000; 2489 unsigned long nsecs_rem = duration % 1000; 2490 /* log10(ULONG_MAX) + '\0' */ 2491 char msecs_str[21]; 2492 char nsecs_str[5]; 2493 int len; 2494 int i; 2495 2496 sprintf(msecs_str, "%lu", usecs); 2497 2498 /* Print msecs */ 2499 len = printf("%lu", usecs); 2500 2501 /* Print nsecs (we don't want to exceed 7 numbers) */ 2502 if (len < 7) { 2503 snprintf(nsecs_str, 8 - len, "%03lu", nsecs_rem); 2504 len += printf(".%s", nsecs_str); 2505 } 2506 2507 printf(" us "); 2508 2509 /* Print remaining spaces to fit the row's width */ 2510 for (i = len; i < 7; i++) 2511 printf(" "); 2512 2513 printf("| "); 2514 } 2515 2516 static void 2517 print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec) 2518 { 2519 unsigned long long rettime, calltime; 2520 unsigned long long duration, depth; 2521 unsigned long long val; 2522 struct format_field *field; 2523 struct func_map *func; 2524 struct event *ret_event; 2525 int type; 2526 int i; 2527 2528 type = trace_parse_common_type(ret_rec->data); 2529 ret_event = trace_find_event(type); 2530 2531 field = find_field(ret_event, "rettime"); 2532 if (!field) 2533 die("can't find rettime in return graph"); 2534 rettime = read_size(ret_rec->data + field->offset, field->size); 2535 2536 field = find_field(ret_event, "calltime"); 2537 if (!field) 2538 die("can't find rettime in return graph"); 2539 calltime = read_size(ret_rec->data + field->offset, field->size); 2540 2541 duration = rettime - calltime; 2542 2543 /* Overhead */ 2544 print_graph_overhead(duration); 2545 2546 /* Duration */ 2547 print_graph_duration(duration); 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 print_graph_nested(struct event *event, void *data) 2571 { 2572 struct format_field *field; 2573 unsigned long long depth; 2574 unsigned long long val; 2575 struct func_map *func; 2576 int i; 2577 2578 /* No overhead */ 2579 print_graph_overhead(-1); 2580 2581 /* No time */ 2582 printf(" | "); 2583 2584 field = find_field(event, "depth"); 2585 if (!field) 2586 die("can't find depth in entry graph"); 2587 depth = read_size(data + field->offset, field->size); 2588 2589 /* Function */ 2590 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) 2591 printf(" "); 2592 2593 field = find_field(event, "func"); 2594 if (!field) 2595 die("can't find func in entry graph"); 2596 val = read_size(data + field->offset, field->size); 2597 func = find_func(val); 2598 2599 if (func) 2600 printf("%s() {", func->func); 2601 else 2602 printf("%llx() {", val); 2603 } 2604 2605 static void 2606 pretty_print_func_ent(void *data, int size, struct event *event, 2607 int cpu, int pid, const char *comm, 2608 unsigned long secs, unsigned long usecs) 2609 { 2610 struct format_field *field; 2611 struct record *rec; 2612 void *copy_data; 2613 unsigned long val; 2614 2615 printf("%5lu.%06lu | ", secs, usecs); 2616 2617 print_graph_cpu(cpu); 2618 print_graph_proc(pid, comm); 2619 2620 printf(" | "); 2621 2622 field = find_field(event, "func"); 2623 if (!field) 2624 die("function entry does not have func field"); 2625 2626 val = read_size(data + field->offset, field->size); 2627 2628 /* 2629 * peek_data may unmap the data pointer. Copy it first. 2630 */ 2631 copy_data = malloc_or_die(size); 2632 memcpy(copy_data, data, size); 2633 data = copy_data; 2634 2635 rec = trace_peek_data(cpu); 2636 if (rec) { 2637 rec = get_return_for_leaf(cpu, pid, val, rec); 2638 if (rec) { 2639 print_graph_entry_leaf(event, data, rec); 2640 goto out_free; 2641 } 2642 } 2643 print_graph_nested(event, data); 2644 out_free: 2645 free(data); 2646 } 2647 2648 static void 2649 pretty_print_func_ret(void *data, int size __unused, struct event *event, 2650 int cpu, int pid, const char *comm, 2651 unsigned long secs, unsigned long usecs) 2652 { 2653 unsigned long long rettime, calltime; 2654 unsigned long long duration, depth; 2655 struct format_field *field; 2656 int i; 2657 2658 printf("%5lu.%06lu | ", secs, usecs); 2659 2660 print_graph_cpu(cpu); 2661 print_graph_proc(pid, comm); 2662 2663 printf(" | "); 2664 2665 field = find_field(event, "rettime"); 2666 if (!field) 2667 die("can't find rettime in return graph"); 2668 rettime = read_size(data + field->offset, field->size); 2669 2670 field = find_field(event, "calltime"); 2671 if (!field) 2672 die("can't find calltime in return graph"); 2673 calltime = read_size(data + field->offset, field->size); 2674 2675 duration = rettime - calltime; 2676 2677 /* Overhead */ 2678 print_graph_overhead(duration); 2679 2680 /* Duration */ 2681 print_graph_duration(duration); 2682 2683 field = find_field(event, "depth"); 2684 if (!field) 2685 die("can't find depth in entry graph"); 2686 depth = read_size(data + field->offset, field->size); 2687 2688 /* Function */ 2689 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) 2690 printf(" "); 2691 2692 printf("}"); 2693 } 2694 2695 static void 2696 pretty_print_func_graph(void *data, int size, struct event *event, 2697 int cpu, int pid, const char *comm, 2698 unsigned long secs, unsigned long usecs) 2699 { 2700 if (event->flags & EVENT_FL_ISFUNCENT) 2701 pretty_print_func_ent(data, size, event, 2702 cpu, pid, comm, secs, usecs); 2703 else if (event->flags & EVENT_FL_ISFUNCRET) 2704 pretty_print_func_ret(data, size, event, 2705 cpu, pid, comm, secs, usecs); 2706 printf("\n"); 2707 } 2708 2709 void print_event(int cpu, void *data, int size, unsigned long long nsecs, 2710 char *comm) 2711 { 2712 struct event *event; 2713 unsigned long secs; 2714 unsigned long usecs; 2715 int type; 2716 int pid; 2717 2718 secs = nsecs / NSECS_PER_SEC; 2719 nsecs -= secs * NSECS_PER_SEC; 2720 usecs = nsecs / NSECS_PER_USEC; 2721 2722 type = trace_parse_common_type(data); 2723 2724 event = trace_find_event(type); 2725 if (!event) { 2726 printf("ug! no event found for type %d\n", type); 2727 return; 2728 } 2729 2730 pid = parse_common_pid(data); 2731 2732 if (event->flags & (EVENT_FL_ISFUNCENT | EVENT_FL_ISFUNCRET)) 2733 return pretty_print_func_graph(data, size, event, cpu, 2734 pid, comm, secs, usecs); 2735 2736 printf("%16s-%-5d [%03d] %5lu.%09Lu: %s: ", 2737 comm, pid, cpu, 2738 secs, nsecs, event->name); 2739 2740 pretty_print(data, size, event); 2741 printf("\n"); 2742 } 2743 2744 static void print_fields(struct print_flag_sym *field) 2745 { 2746 printf("{ %s, %s }", field->value, field->str); 2747 if (field->next) { 2748 printf(", "); 2749 print_fields(field->next); 2750 } 2751 } 2752 2753 static void print_args(struct print_arg *args) 2754 { 2755 int print_paren = 1; 2756 2757 switch (args->type) { 2758 case PRINT_NULL: 2759 printf("null"); 2760 break; 2761 case PRINT_ATOM: 2762 printf("%s", args->atom.atom); 2763 break; 2764 case PRINT_FIELD: 2765 printf("REC->%s", args->field.name); 2766 break; 2767 case PRINT_FLAGS: 2768 printf("__print_flags("); 2769 print_args(args->flags.field); 2770 printf(", %s, ", args->flags.delim); 2771 print_fields(args->flags.flags); 2772 printf(")"); 2773 break; 2774 case PRINT_SYMBOL: 2775 printf("__print_symbolic("); 2776 print_args(args->symbol.field); 2777 printf(", "); 2778 print_fields(args->symbol.symbols); 2779 printf(")"); 2780 break; 2781 case PRINT_STRING: 2782 printf("__get_str(%s)", args->string.string); 2783 break; 2784 case PRINT_TYPE: 2785 printf("(%s)", args->typecast.type); 2786 print_args(args->typecast.item); 2787 break; 2788 case PRINT_OP: 2789 if (strcmp(args->op.op, ":") == 0) 2790 print_paren = 0; 2791 if (print_paren) 2792 printf("("); 2793 print_args(args->op.left); 2794 printf(" %s ", args->op.op); 2795 print_args(args->op.right); 2796 if (print_paren) 2797 printf(")"); 2798 break; 2799 default: 2800 /* we should warn... */ 2801 return; 2802 } 2803 if (args->next) { 2804 printf("\n"); 2805 print_args(args->next); 2806 } 2807 } 2808 2809 static void parse_header_field(char *type, 2810 int *offset, int *size) 2811 { 2812 char *token; 2813 2814 if (read_expected(EVENT_ITEM, (char *)"field") < 0) 2815 return; 2816 if (read_expected(EVENT_OP, (char *)":") < 0) 2817 return; 2818 /* type */ 2819 if (read_expect_type(EVENT_ITEM, &token) < 0) 2820 return; 2821 free_token(token); 2822 2823 if (read_expected(EVENT_ITEM, type) < 0) 2824 return; 2825 if (read_expected(EVENT_OP, (char *)";") < 0) 2826 return; 2827 if (read_expected(EVENT_ITEM, (char *)"offset") < 0) 2828 return; 2829 if (read_expected(EVENT_OP, (char *)":") < 0) 2830 return; 2831 if (read_expect_type(EVENT_ITEM, &token) < 0) 2832 return; 2833 *offset = atoi(token); 2834 free_token(token); 2835 if (read_expected(EVENT_OP, (char *)";") < 0) 2836 return; 2837 if (read_expected(EVENT_ITEM, (char *)"size") < 0) 2838 return; 2839 if (read_expected(EVENT_OP, (char *)":") < 0) 2840 return; 2841 if (read_expect_type(EVENT_ITEM, &token) < 0) 2842 return; 2843 *size = atoi(token); 2844 free_token(token); 2845 if (read_expected(EVENT_OP, (char *)";") < 0) 2846 return; 2847 if (read_expect_type(EVENT_NEWLINE, &token) < 0) 2848 return; 2849 free_token(token); 2850 } 2851 2852 int parse_header_page(char *buf, unsigned long size) 2853 { 2854 init_input_buf(buf, size); 2855 2856 parse_header_field((char *)"timestamp", &header_page_ts_offset, 2857 &header_page_ts_size); 2858 parse_header_field((char *)"commit", &header_page_size_offset, 2859 &header_page_size_size); 2860 parse_header_field((char *)"data", &header_page_data_offset, 2861 &header_page_data_size); 2862 2863 return 0; 2864 } 2865 2866 int parse_ftrace_file(char *buf, unsigned long size) 2867 { 2868 struct format_field *field; 2869 struct print_arg *arg, **list; 2870 struct event *event; 2871 int ret; 2872 2873 init_input_buf(buf, size); 2874 2875 event = alloc_event(); 2876 if (!event) 2877 return -ENOMEM; 2878 2879 event->flags |= EVENT_FL_ISFTRACE; 2880 2881 event->name = event_read_name(); 2882 if (!event->name) 2883 die("failed to read ftrace event name"); 2884 2885 if (strcmp(event->name, "function") == 0) 2886 event->flags |= EVENT_FL_ISFUNC; 2887 2888 else if (strcmp(event->name, "funcgraph_entry") == 0) 2889 event->flags |= EVENT_FL_ISFUNCENT; 2890 2891 else if (strcmp(event->name, "funcgraph_exit") == 0) 2892 event->flags |= EVENT_FL_ISFUNCRET; 2893 2894 else if (strcmp(event->name, "bprint") == 0) 2895 event->flags |= EVENT_FL_ISBPRINT; 2896 2897 event->id = event_read_id(); 2898 if (event->id < 0) 2899 die("failed to read ftrace event id"); 2900 2901 add_event(event); 2902 2903 ret = event_read_format(event); 2904 if (ret < 0) 2905 die("failed to read ftrace event format"); 2906 2907 ret = event_read_print(event); 2908 if (ret < 0) 2909 die("failed to read ftrace event print fmt"); 2910 2911 /* 2912 * The arguments for ftrace files are parsed by the fields. 2913 * Set up the fields as their arguments. 2914 */ 2915 list = &event->print_fmt.args; 2916 for (field = event->format.fields; field; field = field->next) { 2917 arg = malloc_or_die(sizeof(*arg)); 2918 memset(arg, 0, sizeof(*arg)); 2919 *list = arg; 2920 list = &arg->next; 2921 arg->type = PRINT_FIELD; 2922 arg->field.name = field->name; 2923 arg->field.field = field; 2924 } 2925 return 0; 2926 } 2927 2928 int parse_event_file(char *buf, unsigned long size, char *system__unused __unused) 2929 { 2930 struct event *event; 2931 int ret; 2932 2933 init_input_buf(buf, size); 2934 2935 event = alloc_event(); 2936 if (!event) 2937 return -ENOMEM; 2938 2939 event->name = event_read_name(); 2940 if (!event->name) 2941 die("failed to read event name"); 2942 2943 event->id = event_read_id(); 2944 if (event->id < 0) 2945 die("failed to read event id"); 2946 2947 ret = event_read_format(event); 2948 if (ret < 0) 2949 die("failed to read event format"); 2950 2951 ret = event_read_print(event); 2952 if (ret < 0) 2953 die("failed to read event print fmt"); 2954 2955 #define PRINT_ARGS 0 2956 if (PRINT_ARGS && event->print_fmt.args) 2957 print_args(event->print_fmt.args); 2958 2959 add_event(event); 2960 return 0; 2961 } 2962 2963 void parse_set_info(int nr_cpus, int long_sz) 2964 { 2965 cpus = nr_cpus; 2966 long_size = long_sz; 2967 } 2968