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