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perf tools: Simplify event_read_id exit path
[deliverable/linux.git] / tools / perf / util / trace-event-parse.c
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
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <errno.h>
29
30 #include "../perf.h"
31 #include "util.h"
32 #include "trace-event.h"
33
34 int header_page_ts_offset;
35 int header_page_ts_size;
36 int header_page_size_offset;
37 int header_page_size_size;
38 int header_page_overwrite_offset;
39 int header_page_overwrite_size;
40 int header_page_data_offset;
41 int header_page_data_size;
42
43 bool latency_format;
44
45 static char *input_buf;
46 static unsigned long long input_buf_ptr;
47 static unsigned long long input_buf_siz;
48
49 static int cpus;
50 static int long_size;
51 static int is_flag_field;
52 static int is_symbolic_field;
53
54 static struct format_field *
55 find_any_field(struct event *event, const char *name);
56
57 static void init_input_buf(char *buf, unsigned long long size)
58 {
59 input_buf = buf;
60 input_buf_siz = size;
61 input_buf_ptr = 0;
62 }
63
64 struct cmdline {
65 char *comm;
66 int pid;
67 };
68
69 static struct cmdline *cmdlines;
70 static int cmdline_count;
71
72 static int cmdline_cmp(const void *a, const void *b)
73 {
74 const struct cmdline *ca = a;
75 const struct cmdline *cb = b;
76
77 if (ca->pid < cb->pid)
78 return -1;
79 if (ca->pid > cb->pid)
80 return 1;
81
82 return 0;
83 }
84
85 void parse_cmdlines(char *file, int size __unused)
86 {
87 struct cmdline_list {
88 struct cmdline_list *next;
89 char *comm;
90 int pid;
91 } *list = NULL, *item;
92 char *line;
93 char *next = NULL;
94 int i;
95
96 line = strtok_r(file, "\n", &next);
97 while (line) {
98 item = malloc_or_die(sizeof(*item));
99 sscanf(line, "%d %as", &item->pid,
100 (float *)(void *)&item->comm); /* workaround gcc warning */
101 item->next = list;
102 list = item;
103 line = strtok_r(NULL, "\n", &next);
104 cmdline_count++;
105 }
106
107 cmdlines = malloc_or_die(sizeof(*cmdlines) * cmdline_count);
108
109 i = 0;
110 while (list) {
111 cmdlines[i].pid = list->pid;
112 cmdlines[i].comm = list->comm;
113 i++;
114 item = list;
115 list = list->next;
116 free(item);
117 }
118
119 qsort(cmdlines, cmdline_count, sizeof(*cmdlines), cmdline_cmp);
120 }
121
122 static struct func_map {
123 unsigned long long addr;
124 char *func;
125 char *mod;
126 } *func_list;
127 static unsigned int func_count;
128
129 static int func_cmp(const void *a, const void *b)
130 {
131 const struct func_map *fa = a;
132 const struct func_map *fb = b;
133
134 if (fa->addr < fb->addr)
135 return -1;
136 if (fa->addr > fb->addr)
137 return 1;
138
139 return 0;
140 }
141
142 void parse_proc_kallsyms(char *file, unsigned int size __unused)
143 {
144 struct func_list {
145 struct func_list *next;
146 unsigned long long addr;
147 char *func;
148 char *mod;
149 } *list = NULL, *item;
150 char *line;
151 char *next = NULL;
152 char *addr_str;
153 char ch;
154 int ret __used;
155 int i;
156
157 line = strtok_r(file, "\n", &next);
158 while (line) {
159 item = malloc_or_die(sizeof(*item));
160 item->mod = NULL;
161 ret = sscanf(line, "%as %c %as\t[%as",
162 (float *)(void *)&addr_str, /* workaround gcc warning */
163 &ch,
164 (float *)(void *)&item->func,
165 (float *)(void *)&item->mod);
166 item->addr = strtoull(addr_str, NULL, 16);
167 free(addr_str);
168
169 /* truncate the extra ']' */
170 if (item->mod)
171 item->mod[strlen(item->mod) - 1] = 0;
172
173
174 item->next = list;
175 list = item;
176 line = strtok_r(NULL, "\n", &next);
177 func_count++;
178 }
179
180 func_list = malloc_or_die(sizeof(*func_list) * (func_count + 1));
181
182 i = 0;
183 while (list) {
184 func_list[i].func = list->func;
185 func_list[i].addr = list->addr;
186 func_list[i].mod = list->mod;
187 i++;
188 item = list;
189 list = list->next;
190 free(item);
191 }
192
193 qsort(func_list, func_count, sizeof(*func_list), func_cmp);
194
195 /*
196 * Add a special record at the end.
197 */
198 func_list[func_count].func = NULL;
199 func_list[func_count].addr = 0;
200 func_list[func_count].mod = NULL;
201 }
202
203 /*
204 * We are searching for a record in between, not an exact
205 * match.
206 */
207 static int func_bcmp(const void *a, const void *b)
208 {
209 const struct func_map *fa = a;
210 const struct func_map *fb = b;
211
212 if ((fa->addr == fb->addr) ||
213
214 (fa->addr > fb->addr &&
215 fa->addr < (fb+1)->addr))
216 return 0;
217
218 if (fa->addr < fb->addr)
219 return -1;
220
221 return 1;
222 }
223
224 static struct func_map *find_func(unsigned long long addr)
225 {
226 struct func_map *func;
227 struct func_map key;
228
229 key.addr = addr;
230
231 func = bsearch(&key, func_list, func_count, sizeof(*func_list),
232 func_bcmp);
233
234 return func;
235 }
236
237 void print_funcs(void)
238 {
239 int i;
240
241 for (i = 0; i < (int)func_count; i++) {
242 printf("%016llx %s",
243 func_list[i].addr,
244 func_list[i].func);
245 if (func_list[i].mod)
246 printf(" [%s]\n", func_list[i].mod);
247 else
248 printf("\n");
249 }
250 }
251
252 static struct printk_map {
253 unsigned long long addr;
254 char *printk;
255 } *printk_list;
256 static unsigned int printk_count;
257
258 static int printk_cmp(const void *a, const void *b)
259 {
260 const struct func_map *fa = a;
261 const struct func_map *fb = b;
262
263 if (fa->addr < fb->addr)
264 return -1;
265 if (fa->addr > fb->addr)
266 return 1;
267
268 return 0;
269 }
270
271 static struct printk_map *find_printk(unsigned long long addr)
272 {
273 struct printk_map *printk;
274 struct printk_map key;
275
276 key.addr = addr;
277
278 printk = bsearch(&key, printk_list, printk_count, sizeof(*printk_list),
279 printk_cmp);
280
281 return printk;
282 }
283
284 void parse_ftrace_printk(char *file, unsigned int size __unused)
285 {
286 struct printk_list {
287 struct printk_list *next;
288 unsigned long long addr;
289 char *printk;
290 } *list = NULL, *item;
291 char *line;
292 char *next = NULL;
293 char *addr_str;
294 int i;
295
296 line = strtok_r(file, "\n", &next);
297 while (line) {
298 addr_str = strsep(&line, ":");
299 if (!line) {
300 warning("error parsing print strings");
301 break;
302 }
303 item = malloc_or_die(sizeof(*item));
304 item->addr = strtoull(addr_str, NULL, 16);
305 /* fmt still has a space, skip it */
306 item->printk = strdup(line+1);
307 item->next = list;
308 list = item;
309 line = strtok_r(NULL, "\n", &next);
310 printk_count++;
311 }
312
313 printk_list = malloc_or_die(sizeof(*printk_list) * printk_count + 1);
314
315 i = 0;
316 while (list) {
317 printk_list[i].printk = list->printk;
318 printk_list[i].addr = list->addr;
319 i++;
320 item = list;
321 list = list->next;
322 free(item);
323 }
324
325 qsort(printk_list, printk_count, sizeof(*printk_list), printk_cmp);
326 }
327
328 void print_printk(void)
329 {
330 int i;
331
332 for (i = 0; i < (int)printk_count; i++) {
333 printf("%016llx %s\n",
334 printk_list[i].addr,
335 printk_list[i].printk);
336 }
337 }
338
339 static struct event *alloc_event(void)
340 {
341 struct event *event;
342
343 event = malloc_or_die(sizeof(*event));
344 memset(event, 0, sizeof(*event));
345
346 return event;
347 }
348
349 enum event_type {
350 EVENT_ERROR,
351 EVENT_NONE,
352 EVENT_SPACE,
353 EVENT_NEWLINE,
354 EVENT_OP,
355 EVENT_DELIM,
356 EVENT_ITEM,
357 EVENT_DQUOTE,
358 EVENT_SQUOTE,
359 };
360
361 static struct event *event_list;
362
363 static void add_event(struct event *event)
364 {
365 event->next = event_list;
366 event_list = event;
367 }
368
369 static int event_item_type(enum event_type type)
370 {
371 switch (type) {
372 case EVENT_ITEM ... EVENT_SQUOTE:
373 return 1;
374 case EVENT_ERROR ... EVENT_DELIM:
375 default:
376 return 0;
377 }
378 }
379
380 static void free_arg(struct print_arg *arg)
381 {
382 if (!arg)
383 return;
384
385 switch (arg->type) {
386 case PRINT_ATOM:
387 if (arg->atom.atom)
388 free(arg->atom.atom);
389 break;
390 case PRINT_NULL:
391 case PRINT_FIELD ... PRINT_OP:
392 default:
393 /* todo */
394 break;
395 }
396
397 free(arg);
398 }
399
400 static enum event_type get_type(int ch)
401 {
402 if (ch == '\n')
403 return EVENT_NEWLINE;
404 if (isspace(ch))
405 return EVENT_SPACE;
406 if (isalnum(ch) || ch == '_')
407 return EVENT_ITEM;
408 if (ch == '\'')
409 return EVENT_SQUOTE;
410 if (ch == '"')
411 return EVENT_DQUOTE;
412 if (!isprint(ch))
413 return EVENT_NONE;
414 if (ch == '(' || ch == ')' || ch == ',')
415 return EVENT_DELIM;
416
417 return EVENT_OP;
418 }
419
420 static int __read_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 int __peek_char(void)
429 {
430 if (input_buf_ptr >= input_buf_siz)
431 return -1;
432
433 return input_buf[input_buf_ptr];
434 }
435
436 static enum event_type __read_token(char **tok)
437 {
438 char buf[BUFSIZ];
439 int ch, last_ch, quote_ch, next_ch;
440 int i = 0;
441 int tok_size = 0;
442 enum event_type type;
443
444 *tok = NULL;
445
446
447 ch = __read_char();
448 if (ch < 0)
449 return EVENT_NONE;
450
451 type = get_type(ch);
452 if (type == EVENT_NONE)
453 return type;
454
455 buf[i++] = ch;
456
457 switch (type) {
458 case EVENT_NEWLINE:
459 case EVENT_DELIM:
460 *tok = malloc_or_die(2);
461 (*tok)[0] = ch;
462 (*tok)[1] = 0;
463 return type;
464
465 case EVENT_OP:
466 switch (ch) {
467 case '-':
468 next_ch = __peek_char();
469 if (next_ch == '>') {
470 buf[i++] = __read_char();
471 break;
472 }
473 /* fall through */
474 case '+':
475 case '|':
476 case '&':
477 case '>':
478 case '<':
479 last_ch = ch;
480 ch = __peek_char();
481 if (ch != last_ch)
482 goto test_equal;
483 buf[i++] = __read_char();
484 switch (last_ch) {
485 case '>':
486 case '<':
487 goto test_equal;
488 default:
489 break;
490 }
491 break;
492 case '!':
493 case '=':
494 goto test_equal;
495 default: /* what should we do instead? */
496 break;
497 }
498 buf[i] = 0;
499 *tok = strdup(buf);
500 return type;
501
502 test_equal:
503 ch = __peek_char();
504 if (ch == '=')
505 buf[i++] = __read_char();
506 break;
507
508 case EVENT_DQUOTE:
509 case EVENT_SQUOTE:
510 /* don't keep quotes */
511 i--;
512 quote_ch = ch;
513 last_ch = 0;
514 do {
515 if (i == (BUFSIZ - 1)) {
516 buf[i] = 0;
517 if (*tok) {
518 *tok = realloc(*tok, tok_size + BUFSIZ);
519 if (!*tok)
520 return EVENT_NONE;
521 strcat(*tok, buf);
522 } else
523 *tok = strdup(buf);
524
525 if (!*tok)
526 return EVENT_NONE;
527 tok_size += BUFSIZ;
528 i = 0;
529 }
530 last_ch = ch;
531 ch = __read_char();
532 buf[i++] = ch;
533 /* the '\' '\' will cancel itself */
534 if (ch == '\\' && last_ch == '\\')
535 last_ch = 0;
536 } while (ch != quote_ch || last_ch == '\\');
537 /* remove the last quote */
538 i--;
539 goto out;
540
541 case EVENT_ERROR ... EVENT_SPACE:
542 case EVENT_ITEM:
543 default:
544 break;
545 }
546
547 while (get_type(__peek_char()) == type) {
548 if (i == (BUFSIZ - 1)) {
549 buf[i] = 0;
550 if (*tok) {
551 *tok = realloc(*tok, tok_size + BUFSIZ);
552 if (!*tok)
553 return EVENT_NONE;
554 strcat(*tok, buf);
555 } else
556 *tok = strdup(buf);
557
558 if (!*tok)
559 return EVENT_NONE;
560 tok_size += BUFSIZ;
561 i = 0;
562 }
563 ch = __read_char();
564 buf[i++] = ch;
565 }
566
567 out:
568 buf[i] = 0;
569 if (*tok) {
570 *tok = realloc(*tok, tok_size + i);
571 if (!*tok)
572 return EVENT_NONE;
573 strcat(*tok, buf);
574 } else
575 *tok = strdup(buf);
576 if (!*tok)
577 return EVENT_NONE;
578
579 return type;
580 }
581
582 static void free_token(char *tok)
583 {
584 if (tok)
585 free(tok);
586 }
587
588 static enum event_type read_token(char **tok)
589 {
590 enum event_type type;
591
592 for (;;) {
593 type = __read_token(tok);
594 if (type != EVENT_SPACE)
595 return type;
596
597 free_token(*tok);
598 }
599
600 /* not reached */
601 return EVENT_NONE;
602 }
603
604 /* no newline */
605 static enum event_type read_token_item(char **tok)
606 {
607 enum event_type type;
608
609 for (;;) {
610 type = __read_token(tok);
611 if (type != EVENT_SPACE && type != EVENT_NEWLINE)
612 return type;
613
614 free_token(*tok);
615 }
616
617 /* not reached */
618 return EVENT_NONE;
619 }
620
621 static int test_type(enum event_type type, enum event_type expect)
622 {
623 if (type != expect) {
624 warning("Error: expected type %d but read %d",
625 expect, type);
626 return -1;
627 }
628 return 0;
629 }
630
631 static int __test_type_token(enum event_type type, char *token,
632 enum event_type expect, const char *expect_tok,
633 bool warn)
634 {
635 if (type != expect) {
636 if (warn)
637 warning("Error: expected type %d but read %d",
638 expect, type);
639 return -1;
640 }
641
642 if (strcmp(token, expect_tok) != 0) {
643 if (warn)
644 warning("Error: expected '%s' but read '%s'",
645 expect_tok, token);
646 return -1;
647 }
648 return 0;
649 }
650
651 static int test_type_token(enum event_type type, char *token,
652 enum event_type expect, const char *expect_tok)
653 {
654 return __test_type_token(type, token, expect, expect_tok, true);
655 }
656
657 static int __read_expect_type(enum event_type expect, char **tok, int newline_ok)
658 {
659 enum event_type type;
660
661 if (newline_ok)
662 type = read_token(tok);
663 else
664 type = read_token_item(tok);
665 return test_type(type, expect);
666 }
667
668 static int read_expect_type(enum event_type expect, char **tok)
669 {
670 return __read_expect_type(expect, tok, 1);
671 }
672
673 static int __read_expected(enum event_type expect, const char *str,
674 int newline_ok, bool warn)
675 {
676 enum event_type type;
677 char *token;
678 int ret;
679
680 if (newline_ok)
681 type = read_token(&token);
682 else
683 type = read_token_item(&token);
684
685 ret = __test_type_token(type, token, expect, str, warn);
686
687 free_token(token);
688
689 return ret;
690 }
691
692 static int read_expected(enum event_type expect, const char *str)
693 {
694 return __read_expected(expect, str, 1, true);
695 }
696
697 static int read_expected_item(enum event_type expect, const char *str)
698 {
699 return __read_expected(expect, str, 0, true);
700 }
701
702 static char *event_read_name(void)
703 {
704 char *token;
705
706 if (read_expected(EVENT_ITEM, "name") < 0)
707 return NULL;
708
709 if (read_expected(EVENT_OP, ":") < 0)
710 return NULL;
711
712 if (read_expect_type(EVENT_ITEM, &token) < 0)
713 goto fail;
714
715 return token;
716
717 fail:
718 free_token(token);
719 return NULL;
720 }
721
722 static int event_read_id(void)
723 {
724 char *token;
725 int id = -1;
726
727 if (read_expected_item(EVENT_ITEM, "ID") < 0)
728 return -1;
729
730 if (read_expected(EVENT_OP, ":") < 0)
731 return -1;
732
733 if (read_expect_type(EVENT_ITEM, &token) < 0)
734 goto free;
735
736 id = strtoul(token, NULL, 0);
737
738 free:
739 free_token(token);
740 return id;
741 }
742
743 static int field_is_string(struct format_field *field)
744 {
745 if ((field->flags & FIELD_IS_ARRAY) &&
746 (!strstr(field->type, "char") || !strstr(field->type, "u8") ||
747 !strstr(field->type, "s8")))
748 return 1;
749
750 return 0;
751 }
752
753 static int field_is_dynamic(struct format_field *field)
754 {
755 if (!strncmp(field->type, "__data_loc", 10))
756 return 1;
757
758 return 0;
759 }
760
761 static int event_read_fields(struct event *event, struct format_field **fields)
762 {
763 struct format_field *field = NULL;
764 enum event_type type;
765 char *token;
766 char *last_token;
767 int count = 0;
768
769 do {
770 type = read_token(&token);
771 if (type == EVENT_NEWLINE) {
772 free_token(token);
773 return count;
774 }
775
776 count++;
777
778 if (test_type_token(type, token, EVENT_ITEM, "field"))
779 goto fail;
780 free_token(token);
781
782 type = read_token(&token);
783 /*
784 * The ftrace fields may still use the "special" name.
785 * Just ignore it.
786 */
787 if (event->flags & EVENT_FL_ISFTRACE &&
788 type == EVENT_ITEM && strcmp(token, "special") == 0) {
789 free_token(token);
790 type = read_token(&token);
791 }
792
793 if (test_type_token(type, token, EVENT_OP, ":") < 0)
794 return -1;
795
796 if (read_expect_type(EVENT_ITEM, &token) < 0)
797 goto fail;
798
799 last_token = token;
800
801 field = malloc_or_die(sizeof(*field));
802 memset(field, 0, sizeof(*field));
803
804 /* read the rest of the type */
805 for (;;) {
806 type = read_token(&token);
807 if (type == EVENT_ITEM ||
808 (type == EVENT_OP && strcmp(token, "*") == 0) ||
809 /*
810 * Some of the ftrace fields are broken and have
811 * an illegal "." in them.
812 */
813 (event->flags & EVENT_FL_ISFTRACE &&
814 type == EVENT_OP && strcmp(token, ".") == 0)) {
815
816 if (strcmp(token, "*") == 0)
817 field->flags |= FIELD_IS_POINTER;
818
819 if (field->type) {
820 field->type = realloc(field->type,
821 strlen(field->type) +
822 strlen(last_token) + 2);
823 strcat(field->type, " ");
824 strcat(field->type, last_token);
825 } else
826 field->type = last_token;
827 last_token = token;
828 continue;
829 }
830
831 break;
832 }
833
834 if (!field->type) {
835 die("no type found");
836 goto fail;
837 }
838 field->name = last_token;
839
840 if (test_type(type, EVENT_OP))
841 goto fail;
842
843 if (strcmp(token, "[") == 0) {
844 enum event_type last_type = type;
845 char *brackets = token;
846 int len;
847
848 field->flags |= FIELD_IS_ARRAY;
849
850 type = read_token(&token);
851 while (strcmp(token, "]") != 0) {
852 if (last_type == EVENT_ITEM &&
853 type == EVENT_ITEM)
854 len = 2;
855 else
856 len = 1;
857 last_type = type;
858
859 brackets = realloc(brackets,
860 strlen(brackets) +
861 strlen(token) + len);
862 if (len == 2)
863 strcat(brackets, " ");
864 strcat(brackets, token);
865 free_token(token);
866 type = read_token(&token);
867 if (type == EVENT_NONE) {
868 die("failed to find token");
869 goto fail;
870 }
871 }
872
873 free_token(token);
874
875 brackets = realloc(brackets, strlen(brackets) + 2);
876 strcat(brackets, "]");
877
878 /* add brackets to type */
879
880 type = read_token(&token);
881 /*
882 * If the next token is not an OP, then it is of
883 * the format: type [] item;
884 */
885 if (type == EVENT_ITEM) {
886 field->type = realloc(field->type,
887 strlen(field->type) +
888 strlen(field->name) +
889 strlen(brackets) + 2);
890 strcat(field->type, " ");
891 strcat(field->type, field->name);
892 free_token(field->name);
893 strcat(field->type, brackets);
894 field->name = token;
895 type = read_token(&token);
896 } else {
897 field->type = realloc(field->type,
898 strlen(field->type) +
899 strlen(brackets) + 1);
900 strcat(field->type, brackets);
901 }
902 free(brackets);
903 }
904
905 if (field_is_string(field)) {
906 field->flags |= FIELD_IS_STRING;
907 if (field_is_dynamic(field))
908 field->flags |= FIELD_IS_DYNAMIC;
909 }
910
911 if (test_type_token(type, token, EVENT_OP, ";"))
912 goto fail;
913 free_token(token);
914
915 if (read_expected(EVENT_ITEM, "offset") < 0)
916 goto fail_expect;
917
918 if (read_expected(EVENT_OP, ":") < 0)
919 goto fail_expect;
920
921 if (read_expect_type(EVENT_ITEM, &token))
922 goto fail;
923 field->offset = strtoul(token, NULL, 0);
924 free_token(token);
925
926 if (read_expected(EVENT_OP, ";") < 0)
927 goto fail_expect;
928
929 if (read_expected(EVENT_ITEM, "size") < 0)
930 goto fail_expect;
931
932 if (read_expected(EVENT_OP, ":") < 0)
933 goto fail_expect;
934
935 if (read_expect_type(EVENT_ITEM, &token))
936 goto fail;
937 field->size = strtoul(token, NULL, 0);
938 free_token(token);
939
940 if (read_expected(EVENT_OP, ";") < 0)
941 goto fail_expect;
942
943 type = read_token(&token);
944 if (type != EVENT_NEWLINE) {
945 /* newer versions of the kernel have a "signed" type */
946 if (test_type_token(type, token, EVENT_ITEM, "signed"))
947 goto fail;
948
949 free_token(token);
950
951 if (read_expected(EVENT_OP, ":") < 0)
952 goto fail_expect;
953
954 if (read_expect_type(EVENT_ITEM, &token))
955 goto fail;
956
957 if (strtoul(token, NULL, 0))
958 field->flags |= FIELD_IS_SIGNED;
959
960 free_token(token);
961 if (read_expected(EVENT_OP, ";") < 0)
962 goto fail_expect;
963
964 if (read_expect_type(EVENT_NEWLINE, &token))
965 goto fail;
966 }
967
968 free_token(token);
969
970 *fields = field;
971 fields = &field->next;
972
973 } while (1);
974
975 return 0;
976
977 fail:
978 free_token(token);
979 fail_expect:
980 if (field)
981 free(field);
982 return -1;
983 }
984
985 static int event_read_format(struct event *event)
986 {
987 char *token;
988 int ret;
989
990 if (read_expected_item(EVENT_ITEM, "format") < 0)
991 return -1;
992
993 if (read_expected(EVENT_OP, ":") < 0)
994 return -1;
995
996 if (read_expect_type(EVENT_NEWLINE, &token))
997 goto fail;
998 free_token(token);
999
1000 ret = event_read_fields(event, &event->format.common_fields);
1001 if (ret < 0)
1002 return ret;
1003 event->format.nr_common = ret;
1004
1005 ret = event_read_fields(event, &event->format.fields);
1006 if (ret < 0)
1007 return ret;
1008 event->format.nr_fields = ret;
1009
1010 return 0;
1011
1012 fail:
1013 free_token(token);
1014 return -1;
1015 }
1016
1017 enum event_type
1018 process_arg_token(struct event *event, struct print_arg *arg,
1019 char **tok, enum event_type type);
1020
1021 static enum event_type
1022 process_arg(struct event *event, struct print_arg *arg, char **tok)
1023 {
1024 enum event_type type;
1025 char *token;
1026
1027 type = read_token(&token);
1028 *tok = token;
1029
1030 return process_arg_token(event, arg, tok, type);
1031 }
1032
1033 static enum event_type
1034 process_cond(struct event *event, struct print_arg *top, char **tok)
1035 {
1036 struct print_arg *arg, *left, *right;
1037 enum event_type type;
1038 char *token = NULL;
1039
1040 arg = malloc_or_die(sizeof(*arg));
1041 memset(arg, 0, sizeof(*arg));
1042
1043 left = malloc_or_die(sizeof(*left));
1044
1045 right = malloc_or_die(sizeof(*right));
1046
1047 arg->type = PRINT_OP;
1048 arg->op.left = left;
1049 arg->op.right = right;
1050
1051 *tok = NULL;
1052 type = process_arg(event, left, &token);
1053 if (test_type_token(type, token, EVENT_OP, ":"))
1054 goto out_free;
1055
1056 arg->op.op = token;
1057
1058 type = process_arg(event, right, &token);
1059
1060 top->op.right = arg;
1061
1062 *tok = token;
1063 return type;
1064
1065 out_free:
1066 free_token(*tok);
1067 free(right);
1068 free(left);
1069 free_arg(arg);
1070 return EVENT_ERROR;
1071 }
1072
1073 static enum event_type
1074 process_array(struct event *event, struct print_arg *top, char **tok)
1075 {
1076 struct print_arg *arg;
1077 enum event_type type;
1078 char *token = NULL;
1079
1080 arg = malloc_or_die(sizeof(*arg));
1081 memset(arg, 0, sizeof(*arg));
1082
1083 *tok = NULL;
1084 type = process_arg(event, arg, &token);
1085 if (test_type_token(type, token, EVENT_OP, "]"))
1086 goto out_free;
1087
1088 top->op.right = arg;
1089
1090 free_token(token);
1091 type = read_token_item(&token);
1092 *tok = token;
1093
1094 return type;
1095
1096 out_free:
1097 free_token(*tok);
1098 free_arg(arg);
1099 return EVENT_ERROR;
1100 }
1101
1102 static int get_op_prio(char *op)
1103 {
1104 if (!op[1]) {
1105 switch (op[0]) {
1106 case '*':
1107 case '/':
1108 case '%':
1109 return 6;
1110 case '+':
1111 case '-':
1112 return 7;
1113 /* '>>' and '<<' are 8 */
1114 case '<':
1115 case '>':
1116 return 9;
1117 /* '==' and '!=' are 10 */
1118 case '&':
1119 return 11;
1120 case '^':
1121 return 12;
1122 case '|':
1123 return 13;
1124 case '?':
1125 return 16;
1126 default:
1127 die("unknown op '%c'", op[0]);
1128 return -1;
1129 }
1130 } else {
1131 if (strcmp(op, "++") == 0 ||
1132 strcmp(op, "--") == 0) {
1133 return 3;
1134 } else if (strcmp(op, ">>") == 0 ||
1135 strcmp(op, "<<") == 0) {
1136 return 8;
1137 } else if (strcmp(op, ">=") == 0 ||
1138 strcmp(op, "<=") == 0) {
1139 return 9;
1140 } else if (strcmp(op, "==") == 0 ||
1141 strcmp(op, "!=") == 0) {
1142 return 10;
1143 } else if (strcmp(op, "&&") == 0) {
1144 return 14;
1145 } else if (strcmp(op, "||") == 0) {
1146 return 15;
1147 } else {
1148 die("unknown op '%s'", op);
1149 return -1;
1150 }
1151 }
1152 }
1153
1154 static void set_op_prio(struct print_arg *arg)
1155 {
1156
1157 /* single ops are the greatest */
1158 if (!arg->op.left || arg->op.left->type == PRINT_NULL) {
1159 arg->op.prio = 0;
1160 return;
1161 }
1162
1163 arg->op.prio = get_op_prio(arg->op.op);
1164 }
1165
1166 static enum event_type
1167 process_op(struct event *event, struct print_arg *arg, char **tok)
1168 {
1169 struct print_arg *left, *right = NULL;
1170 enum event_type type;
1171 char *token;
1172
1173 /* the op is passed in via tok */
1174 token = *tok;
1175
1176 if (arg->type == PRINT_OP && !arg->op.left) {
1177 /* handle single op */
1178 if (token[1]) {
1179 die("bad op token %s", token);
1180 return EVENT_ERROR;
1181 }
1182 switch (token[0]) {
1183 case '!':
1184 case '+':
1185 case '-':
1186 break;
1187 default:
1188 die("bad op token %s", token);
1189 return EVENT_ERROR;
1190 }
1191
1192 /* make an empty left */
1193 left = malloc_or_die(sizeof(*left));
1194 left->type = PRINT_NULL;
1195 arg->op.left = left;
1196
1197 right = malloc_or_die(sizeof(*right));
1198 arg->op.right = right;
1199
1200 type = process_arg(event, right, tok);
1201
1202 } else if (strcmp(token, "?") == 0) {
1203
1204 left = malloc_or_die(sizeof(*left));
1205 /* copy the top arg to the left */
1206 *left = *arg;
1207
1208 arg->type = PRINT_OP;
1209 arg->op.op = token;
1210 arg->op.left = left;
1211 arg->op.prio = 0;
1212
1213 type = process_cond(event, arg, tok);
1214
1215 } else if (strcmp(token, ">>") == 0 ||
1216 strcmp(token, "<<") == 0 ||
1217 strcmp(token, "&") == 0 ||
1218 strcmp(token, "|") == 0 ||
1219 strcmp(token, "&&") == 0 ||
1220 strcmp(token, "||") == 0 ||
1221 strcmp(token, "-") == 0 ||
1222 strcmp(token, "+") == 0 ||
1223 strcmp(token, "*") == 0 ||
1224 strcmp(token, "^") == 0 ||
1225 strcmp(token, "/") == 0 ||
1226 strcmp(token, "<") == 0 ||
1227 strcmp(token, ">") == 0 ||
1228 strcmp(token, "==") == 0 ||
1229 strcmp(token, "!=") == 0) {
1230
1231 left = malloc_or_die(sizeof(*left));
1232
1233 /* copy the top arg to the left */
1234 *left = *arg;
1235
1236 arg->type = PRINT_OP;
1237 arg->op.op = token;
1238 arg->op.left = left;
1239
1240 set_op_prio(arg);
1241
1242 right = malloc_or_die(sizeof(*right));
1243
1244 type = read_token_item(&token);
1245 *tok = token;
1246
1247 /* could just be a type pointer */
1248 if ((strcmp(arg->op.op, "*") == 0) &&
1249 type == EVENT_DELIM && (strcmp(token, ")") == 0)) {
1250 if (left->type != PRINT_ATOM)
1251 die("bad pointer type");
1252 left->atom.atom = realloc(left->atom.atom,
1253 sizeof(left->atom.atom) + 3);
1254 strcat(left->atom.atom, " *");
1255 *arg = *left;
1256 free(arg);
1257
1258 return type;
1259 }
1260
1261 type = process_arg_token(event, right, tok, type);
1262
1263 arg->op.right = right;
1264
1265 } else if (strcmp(token, "[") == 0) {
1266
1267 left = malloc_or_die(sizeof(*left));
1268 *left = *arg;
1269
1270 arg->type = PRINT_OP;
1271 arg->op.op = token;
1272 arg->op.left = left;
1273
1274 arg->op.prio = 0;
1275 type = process_array(event, arg, tok);
1276
1277 } else {
1278 warning("unknown op '%s'", token);
1279 event->flags |= EVENT_FL_FAILED;
1280 /* the arg is now the left side */
1281 return EVENT_NONE;
1282 }
1283
1284 if (type == EVENT_OP) {
1285 int prio;
1286
1287 /* higher prios need to be closer to the root */
1288 prio = get_op_prio(*tok);
1289
1290 if (prio > arg->op.prio)
1291 return process_op(event, arg, tok);
1292
1293 return process_op(event, right, tok);
1294 }
1295
1296 return type;
1297 }
1298
1299 static enum event_type
1300 process_entry(struct event *event __unused, struct print_arg *arg,
1301 char **tok)
1302 {
1303 enum event_type type;
1304 char *field;
1305 char *token;
1306
1307 if (read_expected(EVENT_OP, "->") < 0)
1308 return EVENT_ERROR;
1309
1310 if (read_expect_type(EVENT_ITEM, &token) < 0)
1311 goto fail;
1312 field = token;
1313
1314 arg->type = PRINT_FIELD;
1315 arg->field.name = field;
1316
1317 if (is_flag_field) {
1318 arg->field.field = find_any_field(event, arg->field.name);
1319 arg->field.field->flags |= FIELD_IS_FLAG;
1320 is_flag_field = 0;
1321 } else if (is_symbolic_field) {
1322 arg->field.field = find_any_field(event, arg->field.name);
1323 arg->field.field->flags |= FIELD_IS_SYMBOLIC;
1324 is_symbolic_field = 0;
1325 }
1326
1327 type = read_token(&token);
1328 *tok = token;
1329
1330 return type;
1331
1332 fail:
1333 free_token(token);
1334 return EVENT_ERROR;
1335 }
1336
1337 static char *arg_eval (struct print_arg *arg);
1338
1339 static long long arg_num_eval(struct print_arg *arg)
1340 {
1341 long long left, right;
1342 long long val = 0;
1343
1344 switch (arg->type) {
1345 case PRINT_ATOM:
1346 val = strtoll(arg->atom.atom, NULL, 0);
1347 break;
1348 case PRINT_TYPE:
1349 val = arg_num_eval(arg->typecast.item);
1350 break;
1351 case PRINT_OP:
1352 switch (arg->op.op[0]) {
1353 case '|':
1354 left = arg_num_eval(arg->op.left);
1355 right = arg_num_eval(arg->op.right);
1356 if (arg->op.op[1])
1357 val = left || right;
1358 else
1359 val = left | right;
1360 break;
1361 case '&':
1362 left = arg_num_eval(arg->op.left);
1363 right = arg_num_eval(arg->op.right);
1364 if (arg->op.op[1])
1365 val = left && right;
1366 else
1367 val = left & right;
1368 break;
1369 case '<':
1370 left = arg_num_eval(arg->op.left);
1371 right = arg_num_eval(arg->op.right);
1372 switch (arg->op.op[1]) {
1373 case 0:
1374 val = left < right;
1375 break;
1376 case '<':
1377 val = left << right;
1378 break;
1379 case '=':
1380 val = left <= right;
1381 break;
1382 default:
1383 die("unknown op '%s'", arg->op.op);
1384 }
1385 break;
1386 case '>':
1387 left = arg_num_eval(arg->op.left);
1388 right = arg_num_eval(arg->op.right);
1389 switch (arg->op.op[1]) {
1390 case 0:
1391 val = left > right;
1392 break;
1393 case '>':
1394 val = left >> right;
1395 break;
1396 case '=':
1397 val = left >= right;
1398 break;
1399 default:
1400 die("unknown op '%s'", arg->op.op);
1401 }
1402 break;
1403 case '=':
1404 left = arg_num_eval(arg->op.left);
1405 right = arg_num_eval(arg->op.right);
1406
1407 if (arg->op.op[1] != '=')
1408 die("unknown op '%s'", arg->op.op);
1409
1410 val = left == right;
1411 break;
1412 case '!':
1413 left = arg_num_eval(arg->op.left);
1414 right = arg_num_eval(arg->op.right);
1415
1416 switch (arg->op.op[1]) {
1417 case '=':
1418 val = left != right;
1419 break;
1420 default:
1421 die("unknown op '%s'", arg->op.op);
1422 }
1423 break;
1424 case '+':
1425 left = arg_num_eval(arg->op.left);
1426 right = arg_num_eval(arg->op.right);
1427 val = left + right;
1428 break;
1429 default:
1430 die("unknown op '%s'", arg->op.op);
1431 }
1432 break;
1433
1434 case PRINT_NULL:
1435 case PRINT_FIELD ... PRINT_SYMBOL:
1436 case PRINT_STRING:
1437 default:
1438 die("invalid eval type %d", arg->type);
1439
1440 }
1441 return val;
1442 }
1443
1444 static char *arg_eval (struct print_arg *arg)
1445 {
1446 long long val;
1447 static char buf[20];
1448
1449 switch (arg->type) {
1450 case PRINT_ATOM:
1451 return arg->atom.atom;
1452 case PRINT_TYPE:
1453 return arg_eval(arg->typecast.item);
1454 case PRINT_OP:
1455 val = arg_num_eval(arg);
1456 sprintf(buf, "%lld", val);
1457 return buf;
1458
1459 case PRINT_NULL:
1460 case PRINT_FIELD ... PRINT_SYMBOL:
1461 case PRINT_STRING:
1462 default:
1463 die("invalid eval type %d", arg->type);
1464 break;
1465 }
1466
1467 return NULL;
1468 }
1469
1470 static enum event_type
1471 process_fields(struct event *event, struct print_flag_sym **list, char **tok)
1472 {
1473 enum event_type type;
1474 struct print_arg *arg = NULL;
1475 struct print_flag_sym *field;
1476 char *token = NULL;
1477 char *value;
1478
1479 do {
1480 free_token(token);
1481 type = read_token_item(&token);
1482 if (test_type_token(type, token, EVENT_OP, "{"))
1483 break;
1484
1485 arg = malloc_or_die(sizeof(*arg));
1486
1487 free_token(token);
1488 type = process_arg(event, arg, &token);
1489
1490 if (type == EVENT_OP)
1491 type = process_op(event, arg, &token);
1492
1493 if (type == EVENT_ERROR)
1494 goto out_free;
1495
1496 if (test_type_token(type, token, EVENT_DELIM, ","))
1497 goto out_free;
1498
1499 field = malloc_or_die(sizeof(*field));
1500 memset(field, 0, sizeof(*field));
1501
1502 value = arg_eval(arg);
1503 field->value = strdup(value);
1504
1505 free_token(token);
1506 type = process_arg(event, arg, &token);
1507 if (test_type_token(type, token, EVENT_OP, "}"))
1508 goto out_free;
1509
1510 value = arg_eval(arg);
1511 field->str = strdup(value);
1512 free_arg(arg);
1513 arg = NULL;
1514
1515 *list = field;
1516 list = &field->next;
1517
1518 free_token(token);
1519 type = read_token_item(&token);
1520 } while (type == EVENT_DELIM && strcmp(token, ",") == 0);
1521
1522 *tok = token;
1523 return type;
1524
1525 out_free:
1526 free_arg(arg);
1527 free_token(token);
1528
1529 return EVENT_ERROR;
1530 }
1531
1532 static enum event_type
1533 process_flags(struct event *event, struct print_arg *arg, char **tok)
1534 {
1535 struct print_arg *field;
1536 enum event_type type;
1537 char *token;
1538
1539 memset(arg, 0, sizeof(*arg));
1540 arg->type = PRINT_FLAGS;
1541
1542 if (read_expected_item(EVENT_DELIM, "(") < 0)
1543 return EVENT_ERROR;
1544
1545 field = malloc_or_die(sizeof(*field));
1546
1547 type = process_arg(event, field, &token);
1548 while (type == EVENT_OP)
1549 type = process_op(event, field, &token);
1550 if (test_type_token(type, token, EVENT_DELIM, ","))
1551 goto out_free;
1552
1553 arg->flags.field = field;
1554
1555 type = read_token_item(&token);
1556 if (event_item_type(type)) {
1557 arg->flags.delim = token;
1558 type = read_token_item(&token);
1559 }
1560
1561 if (test_type_token(type, token, EVENT_DELIM, ","))
1562 goto out_free;
1563
1564 type = process_fields(event, &arg->flags.flags, &token);
1565 if (test_type_token(type, token, EVENT_DELIM, ")"))
1566 goto out_free;
1567
1568 free_token(token);
1569 type = read_token_item(tok);
1570 return type;
1571
1572 out_free:
1573 free_token(token);
1574 return EVENT_ERROR;
1575 }
1576
1577 static enum event_type
1578 process_symbols(struct event *event, struct print_arg *arg, char **tok)
1579 {
1580 struct print_arg *field;
1581 enum event_type type;
1582 char *token;
1583
1584 memset(arg, 0, sizeof(*arg));
1585 arg->type = PRINT_SYMBOL;
1586
1587 if (read_expected_item(EVENT_DELIM, "(") < 0)
1588 return EVENT_ERROR;
1589
1590 field = malloc_or_die(sizeof(*field));
1591
1592 type = process_arg(event, field, &token);
1593 if (test_type_token(type, token, EVENT_DELIM, ","))
1594 goto out_free;
1595
1596 arg->symbol.field = field;
1597
1598 type = process_fields(event, &arg->symbol.symbols, &token);
1599 if (test_type_token(type, token, EVENT_DELIM, ")"))
1600 goto out_free;
1601
1602 free_token(token);
1603 type = read_token_item(tok);
1604 return type;
1605
1606 out_free:
1607 free_token(token);
1608 return EVENT_ERROR;
1609 }
1610
1611 static enum event_type
1612 process_paren(struct event *event, struct print_arg *arg, char **tok)
1613 {
1614 struct print_arg *item_arg;
1615 enum event_type type;
1616 char *token;
1617
1618 type = process_arg(event, arg, &token);
1619
1620 if (type == EVENT_ERROR)
1621 return EVENT_ERROR;
1622
1623 if (type == EVENT_OP)
1624 type = process_op(event, arg, &token);
1625
1626 if (type == EVENT_ERROR)
1627 return EVENT_ERROR;
1628
1629 if (test_type_token(type, token, EVENT_DELIM, ")")) {
1630 free_token(token);
1631 return EVENT_ERROR;
1632 }
1633
1634 free_token(token);
1635 type = read_token_item(&token);
1636
1637 /*
1638 * If the next token is an item or another open paren, then
1639 * this was a typecast.
1640 */
1641 if (event_item_type(type) ||
1642 (type == EVENT_DELIM && strcmp(token, "(") == 0)) {
1643
1644 /* make this a typecast and contine */
1645
1646 /* prevous must be an atom */
1647 if (arg->type != PRINT_ATOM)
1648 die("previous needed to be PRINT_ATOM");
1649
1650 item_arg = malloc_or_die(sizeof(*item_arg));
1651
1652 arg->type = PRINT_TYPE;
1653 arg->typecast.type = arg->atom.atom;
1654 arg->typecast.item = item_arg;
1655 type = process_arg_token(event, item_arg, &token, type);
1656
1657 }
1658
1659 *tok = token;
1660 return type;
1661 }
1662
1663
1664 static enum event_type
1665 process_str(struct event *event __unused, struct print_arg *arg, char **tok)
1666 {
1667 enum event_type type;
1668 char *token;
1669
1670 if (read_expected(EVENT_DELIM, "(") < 0)
1671 return EVENT_ERROR;
1672
1673 if (read_expect_type(EVENT_ITEM, &token) < 0)
1674 goto fail;
1675
1676 arg->type = PRINT_STRING;
1677 arg->string.string = token;
1678 arg->string.offset = -1;
1679
1680 if (read_expected(EVENT_DELIM, ")") < 0)
1681 return EVENT_ERROR;
1682
1683 type = read_token(&token);
1684 *tok = token;
1685
1686 return type;
1687 fail:
1688 free_token(token);
1689 return EVENT_ERROR;
1690 }
1691
1692 enum event_type
1693 process_arg_token(struct event *event, struct print_arg *arg,
1694 char **tok, enum event_type type)
1695 {
1696 char *token;
1697 char *atom;
1698
1699 token = *tok;
1700
1701 switch (type) {
1702 case EVENT_ITEM:
1703 if (strcmp(token, "REC") == 0) {
1704 free_token(token);
1705 type = process_entry(event, arg, &token);
1706 } else if (strcmp(token, "__print_flags") == 0) {
1707 free_token(token);
1708 is_flag_field = 1;
1709 type = process_flags(event, arg, &token);
1710 } else if (strcmp(token, "__print_symbolic") == 0) {
1711 free_token(token);
1712 is_symbolic_field = 1;
1713 type = process_symbols(event, arg, &token);
1714 } else if (strcmp(token, "__get_str") == 0) {
1715 free_token(token);
1716 type = process_str(event, arg, &token);
1717 } else {
1718 atom = token;
1719 /* test the next token */
1720 type = read_token_item(&token);
1721
1722 /* atoms can be more than one token long */
1723 while (type == EVENT_ITEM) {
1724 atom = realloc(atom, strlen(atom) + strlen(token) + 2);
1725 strcat(atom, " ");
1726 strcat(atom, token);
1727 free_token(token);
1728 type = read_token_item(&token);
1729 }
1730
1731 /* todo, test for function */
1732
1733 arg->type = PRINT_ATOM;
1734 arg->atom.atom = atom;
1735 }
1736 break;
1737 case EVENT_DQUOTE:
1738 case EVENT_SQUOTE:
1739 arg->type = PRINT_ATOM;
1740 arg->atom.atom = token;
1741 type = read_token_item(&token);
1742 break;
1743 case EVENT_DELIM:
1744 if (strcmp(token, "(") == 0) {
1745 free_token(token);
1746 type = process_paren(event, arg, &token);
1747 break;
1748 }
1749 case EVENT_OP:
1750 /* handle single ops */
1751 arg->type = PRINT_OP;
1752 arg->op.op = token;
1753 arg->op.left = NULL;
1754 type = process_op(event, arg, &token);
1755
1756 break;
1757
1758 case EVENT_ERROR ... EVENT_NEWLINE:
1759 default:
1760 die("unexpected type %d", type);
1761 }
1762 *tok = token;
1763
1764 return type;
1765 }
1766
1767 static int event_read_print_args(struct event *event, struct print_arg **list)
1768 {
1769 enum event_type type = EVENT_ERROR;
1770 struct print_arg *arg;
1771 char *token;
1772 int args = 0;
1773
1774 do {
1775 if (type == EVENT_NEWLINE) {
1776 free_token(token);
1777 type = read_token_item(&token);
1778 continue;
1779 }
1780
1781 arg = malloc_or_die(sizeof(*arg));
1782 memset(arg, 0, sizeof(*arg));
1783
1784 type = process_arg(event, arg, &token);
1785
1786 if (type == EVENT_ERROR) {
1787 free_arg(arg);
1788 return -1;
1789 }
1790
1791 *list = arg;
1792 args++;
1793
1794 if (type == EVENT_OP) {
1795 type = process_op(event, arg, &token);
1796 list = &arg->next;
1797 continue;
1798 }
1799
1800 if (type == EVENT_DELIM && strcmp(token, ",") == 0) {
1801 free_token(token);
1802 *list = arg;
1803 list = &arg->next;
1804 continue;
1805 }
1806 break;
1807 } while (type != EVENT_NONE);
1808
1809 if (type != EVENT_NONE)
1810 free_token(token);
1811
1812 return args;
1813 }
1814
1815 static int event_read_print(struct event *event)
1816 {
1817 enum event_type type;
1818 char *token;
1819 int ret;
1820
1821 if (read_expected_item(EVENT_ITEM, "print") < 0)
1822 return -1;
1823
1824 if (read_expected(EVENT_ITEM, "fmt") < 0)
1825 return -1;
1826
1827 if (read_expected(EVENT_OP, ":") < 0)
1828 return -1;
1829
1830 if (read_expect_type(EVENT_DQUOTE, &token) < 0)
1831 goto fail;
1832
1833 concat:
1834 event->print_fmt.format = token;
1835 event->print_fmt.args = NULL;
1836
1837 /* ok to have no arg */
1838 type = read_token_item(&token);
1839
1840 if (type == EVENT_NONE)
1841 return 0;
1842
1843 /* Handle concatination of print lines */
1844 if (type == EVENT_DQUOTE) {
1845 char *cat;
1846
1847 cat = malloc_or_die(strlen(event->print_fmt.format) +
1848 strlen(token) + 1);
1849 strcpy(cat, event->print_fmt.format);
1850 strcat(cat, token);
1851 free_token(token);
1852 free_token(event->print_fmt.format);
1853 event->print_fmt.format = NULL;
1854 token = cat;
1855 goto concat;
1856 }
1857
1858 if (test_type_token(type, token, EVENT_DELIM, ","))
1859 goto fail;
1860
1861 free_token(token);
1862
1863 ret = event_read_print_args(event, &event->print_fmt.args);
1864 if (ret < 0)
1865 return -1;
1866
1867 return ret;
1868
1869 fail:
1870 free_token(token);
1871 return -1;
1872 }
1873
1874 static struct format_field *
1875 find_common_field(struct event *event, const char *name)
1876 {
1877 struct format_field *format;
1878
1879 for (format = event->format.common_fields;
1880 format; format = format->next) {
1881 if (strcmp(format->name, name) == 0)
1882 break;
1883 }
1884
1885 return format;
1886 }
1887
1888 static struct format_field *
1889 find_field(struct event *event, const char *name)
1890 {
1891 struct format_field *format;
1892
1893 for (format = event->format.fields;
1894 format; format = format->next) {
1895 if (strcmp(format->name, name) == 0)
1896 break;
1897 }
1898
1899 return format;
1900 }
1901
1902 static struct format_field *
1903 find_any_field(struct event *event, const char *name)
1904 {
1905 struct format_field *format;
1906
1907 format = find_common_field(event, name);
1908 if (format)
1909 return format;
1910 return find_field(event, name);
1911 }
1912
1913 unsigned long long read_size(void *ptr, int size)
1914 {
1915 switch (size) {
1916 case 1:
1917 return *(unsigned char *)ptr;
1918 case 2:
1919 return data2host2(ptr);
1920 case 4:
1921 return data2host4(ptr);
1922 case 8:
1923 return data2host8(ptr);
1924 default:
1925 /* BUG! */
1926 return 0;
1927 }
1928 }
1929
1930 unsigned long long
1931 raw_field_value(struct event *event, const char *name, void *data)
1932 {
1933 struct format_field *field;
1934
1935 field = find_any_field(event, name);
1936 if (!field)
1937 return 0ULL;
1938
1939 return read_size(data + field->offset, field->size);
1940 }
1941
1942 void *raw_field_ptr(struct event *event, const char *name, void *data)
1943 {
1944 struct format_field *field;
1945
1946 field = find_any_field(event, name);
1947 if (!field)
1948 return NULL;
1949
1950 if (field->flags & FIELD_IS_DYNAMIC) {
1951 int offset;
1952
1953 offset = *(int *)(data + field->offset);
1954 offset &= 0xffff;
1955
1956 return data + offset;
1957 }
1958
1959 return data + field->offset;
1960 }
1961
1962 static int get_common_info(const char *type, int *offset, int *size)
1963 {
1964 struct event *event;
1965 struct format_field *field;
1966
1967 /*
1968 * All events should have the same common elements.
1969 * Pick any event to find where the type is;
1970 */
1971 if (!event_list)
1972 die("no event_list!");
1973
1974 event = event_list;
1975 field = find_common_field(event, type);
1976 if (!field)
1977 die("field '%s' not found", type);
1978
1979 *offset = field->offset;
1980 *size = field->size;
1981
1982 return 0;
1983 }
1984
1985 static int __parse_common(void *data, int *size, int *offset,
1986 const char *name)
1987 {
1988 int ret;
1989
1990 if (!*size) {
1991 ret = get_common_info(name, offset, size);
1992 if (ret < 0)
1993 return ret;
1994 }
1995 return read_size(data + *offset, *size);
1996 }
1997
1998 int trace_parse_common_type(void *data)
1999 {
2000 static int type_offset;
2001 static int type_size;
2002
2003 return __parse_common(data, &type_size, &type_offset,
2004 "common_type");
2005 }
2006
2007 int trace_parse_common_pid(void *data)
2008 {
2009 static int pid_offset;
2010 static int pid_size;
2011
2012 return __parse_common(data, &pid_size, &pid_offset,
2013 "common_pid");
2014 }
2015
2016 int parse_common_pc(void *data)
2017 {
2018 static int pc_offset;
2019 static int pc_size;
2020
2021 return __parse_common(data, &pc_size, &pc_offset,
2022 "common_preempt_count");
2023 }
2024
2025 int parse_common_flags(void *data)
2026 {
2027 static int flags_offset;
2028 static int flags_size;
2029
2030 return __parse_common(data, &flags_size, &flags_offset,
2031 "common_flags");
2032 }
2033
2034 int parse_common_lock_depth(void *data)
2035 {
2036 static int ld_offset;
2037 static int ld_size;
2038 int ret;
2039
2040 ret = __parse_common(data, &ld_size, &ld_offset,
2041 "common_lock_depth");
2042 if (ret < 0)
2043 return -1;
2044
2045 return ret;
2046 }
2047
2048 struct event *trace_find_event(int id)
2049 {
2050 struct event *event;
2051
2052 for (event = event_list; event; event = event->next) {
2053 if (event->id == id)
2054 break;
2055 }
2056 return event;
2057 }
2058
2059 struct event *trace_find_next_event(struct event *event)
2060 {
2061 if (!event)
2062 return event_list;
2063
2064 return event->next;
2065 }
2066
2067 static unsigned long long eval_num_arg(void *data, int size,
2068 struct event *event, struct print_arg *arg)
2069 {
2070 unsigned long long val = 0;
2071 unsigned long long left, right;
2072 struct print_arg *larg;
2073
2074 switch (arg->type) {
2075 case PRINT_NULL:
2076 /* ?? */
2077 return 0;
2078 case PRINT_ATOM:
2079 return strtoull(arg->atom.atom, NULL, 0);
2080 case PRINT_FIELD:
2081 if (!arg->field.field) {
2082 arg->field.field = find_any_field(event, arg->field.name);
2083 if (!arg->field.field)
2084 die("field %s not found", arg->field.name);
2085 }
2086 /* must be a number */
2087 val = read_size(data + arg->field.field->offset,
2088 arg->field.field->size);
2089 break;
2090 case PRINT_FLAGS:
2091 case PRINT_SYMBOL:
2092 break;
2093 case PRINT_TYPE:
2094 return eval_num_arg(data, size, event, arg->typecast.item);
2095 case PRINT_STRING:
2096 return 0;
2097 break;
2098 case PRINT_OP:
2099 if (strcmp(arg->op.op, "[") == 0) {
2100 /*
2101 * Arrays are special, since we don't want
2102 * to read the arg as is.
2103 */
2104 if (arg->op.left->type != PRINT_FIELD)
2105 goto default_op; /* oops, all bets off */
2106 larg = arg->op.left;
2107 if (!larg->field.field) {
2108 larg->field.field =
2109 find_any_field(event, larg->field.name);
2110 if (!larg->field.field)
2111 die("field %s not found", larg->field.name);
2112 }
2113 right = eval_num_arg(data, size, event, arg->op.right);
2114 val = read_size(data + larg->field.field->offset +
2115 right * long_size, long_size);
2116 break;
2117 }
2118 default_op:
2119 left = eval_num_arg(data, size, event, arg->op.left);
2120 right = eval_num_arg(data, size, event, arg->op.right);
2121 switch (arg->op.op[0]) {
2122 case '|':
2123 if (arg->op.op[1])
2124 val = left || right;
2125 else
2126 val = left | right;
2127 break;
2128 case '&':
2129 if (arg->op.op[1])
2130 val = left && right;
2131 else
2132 val = left & right;
2133 break;
2134 case '<':
2135 switch (arg->op.op[1]) {
2136 case 0:
2137 val = left < right;
2138 break;
2139 case '<':
2140 val = left << right;
2141 break;
2142 case '=':
2143 val = left <= right;
2144 break;
2145 default:
2146 die("unknown op '%s'", arg->op.op);
2147 }
2148 break;
2149 case '>':
2150 switch (arg->op.op[1]) {
2151 case 0:
2152 val = left > right;
2153 break;
2154 case '>':
2155 val = left >> right;
2156 break;
2157 case '=':
2158 val = left >= right;
2159 break;
2160 default:
2161 die("unknown op '%s'", arg->op.op);
2162 }
2163 break;
2164 case '=':
2165 if (arg->op.op[1] != '=')
2166 die("unknown op '%s'", arg->op.op);
2167 val = left == right;
2168 break;
2169 case '-':
2170 val = left - right;
2171 break;
2172 case '+':
2173 val = left + right;
2174 break;
2175 default:
2176 die("unknown op '%s'", arg->op.op);
2177 }
2178 break;
2179 default: /* not sure what to do there */
2180 return 0;
2181 }
2182 return val;
2183 }
2184
2185 struct flag {
2186 const char *name;
2187 unsigned long long value;
2188 };
2189
2190 static const struct flag flags[] = {
2191 { "HI_SOFTIRQ", 0 },
2192 { "TIMER_SOFTIRQ", 1 },
2193 { "NET_TX_SOFTIRQ", 2 },
2194 { "NET_RX_SOFTIRQ", 3 },
2195 { "BLOCK_SOFTIRQ", 4 },
2196 { "BLOCK_IOPOLL_SOFTIRQ", 5 },
2197 { "TASKLET_SOFTIRQ", 6 },
2198 { "SCHED_SOFTIRQ", 7 },
2199 { "HRTIMER_SOFTIRQ", 8 },
2200 { "RCU_SOFTIRQ", 9 },
2201
2202 { "HRTIMER_NORESTART", 0 },
2203 { "HRTIMER_RESTART", 1 },
2204 };
2205
2206 unsigned long long eval_flag(const char *flag)
2207 {
2208 int i;
2209
2210 /*
2211 * Some flags in the format files do not get converted.
2212 * If the flag is not numeric, see if it is something that
2213 * we already know about.
2214 */
2215 if (isdigit(flag[0]))
2216 return strtoull(flag, NULL, 0);
2217
2218 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
2219 if (strcmp(flags[i].name, flag) == 0)
2220 return flags[i].value;
2221
2222 return 0;
2223 }
2224
2225 static void print_str_arg(void *data, int size,
2226 struct event *event, struct print_arg *arg)
2227 {
2228 struct print_flag_sym *flag;
2229 unsigned long long val, fval;
2230 char *str;
2231 int print;
2232
2233 switch (arg->type) {
2234 case PRINT_NULL:
2235 /* ?? */
2236 return;
2237 case PRINT_ATOM:
2238 printf("%s", arg->atom.atom);
2239 return;
2240 case PRINT_FIELD:
2241 if (!arg->field.field) {
2242 arg->field.field = find_any_field(event, arg->field.name);
2243 if (!arg->field.field)
2244 die("field %s not found", arg->field.name);
2245 }
2246 str = malloc_or_die(arg->field.field->size + 1);
2247 memcpy(str, data + arg->field.field->offset,
2248 arg->field.field->size);
2249 str[arg->field.field->size] = 0;
2250 printf("%s", str);
2251 free(str);
2252 break;
2253 case PRINT_FLAGS:
2254 val = eval_num_arg(data, size, event, arg->flags.field);
2255 print = 0;
2256 for (flag = arg->flags.flags; flag; flag = flag->next) {
2257 fval = eval_flag(flag->value);
2258 if (!val && !fval) {
2259 printf("%s", flag->str);
2260 break;
2261 }
2262 if (fval && (val & fval) == fval) {
2263 if (print && arg->flags.delim)
2264 printf("%s", arg->flags.delim);
2265 printf("%s", flag->str);
2266 print = 1;
2267 val &= ~fval;
2268 }
2269 }
2270 break;
2271 case PRINT_SYMBOL:
2272 val = eval_num_arg(data, size, event, arg->symbol.field);
2273 for (flag = arg->symbol.symbols; flag; flag = flag->next) {
2274 fval = eval_flag(flag->value);
2275 if (val == fval) {
2276 printf("%s", flag->str);
2277 break;
2278 }
2279 }
2280 break;
2281
2282 case PRINT_TYPE:
2283 break;
2284 case PRINT_STRING: {
2285 int str_offset;
2286
2287 if (arg->string.offset == -1) {
2288 struct format_field *f;
2289
2290 f = find_any_field(event, arg->string.string);
2291 arg->string.offset = f->offset;
2292 }
2293 str_offset = *(int *)(data + arg->string.offset);
2294 str_offset &= 0xffff;
2295 printf("%s", ((char *)data) + str_offset);
2296 break;
2297 }
2298 case PRINT_OP:
2299 /*
2300 * The only op for string should be ? :
2301 */
2302 if (arg->op.op[0] != '?')
2303 return;
2304 val = eval_num_arg(data, size, event, arg->op.left);
2305 if (val)
2306 print_str_arg(data, size, event, arg->op.right->op.left);
2307 else
2308 print_str_arg(data, size, event, arg->op.right->op.right);
2309 break;
2310 default:
2311 /* well... */
2312 break;
2313 }
2314 }
2315
2316 static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event *event)
2317 {
2318 static struct format_field *field, *ip_field;
2319 struct print_arg *args, *arg, **next;
2320 unsigned long long ip, val;
2321 char *ptr;
2322 void *bptr;
2323
2324 if (!field) {
2325 field = find_field(event, "buf");
2326 if (!field)
2327 die("can't find buffer field for binary printk");
2328 ip_field = find_field(event, "ip");
2329 if (!ip_field)
2330 die("can't find ip field for binary printk");
2331 }
2332
2333 ip = read_size(data + ip_field->offset, ip_field->size);
2334
2335 /*
2336 * The first arg is the IP pointer.
2337 */
2338 args = malloc_or_die(sizeof(*args));
2339 arg = args;
2340 arg->next = NULL;
2341 next = &arg->next;
2342
2343 arg->type = PRINT_ATOM;
2344 arg->atom.atom = malloc_or_die(32);
2345 sprintf(arg->atom.atom, "%lld", ip);
2346
2347 /* skip the first "%pf : " */
2348 for (ptr = fmt + 6, bptr = data + field->offset;
2349 bptr < data + size && *ptr; ptr++) {
2350 int ls = 0;
2351
2352 if (*ptr == '%') {
2353 process_again:
2354 ptr++;
2355 switch (*ptr) {
2356 case '%':
2357 break;
2358 case 'l':
2359 ls++;
2360 goto process_again;
2361 case 'L':
2362 ls = 2;
2363 goto process_again;
2364 case '0' ... '9':
2365 goto process_again;
2366 case 'p':
2367 ls = 1;
2368 /* fall through */
2369 case 'd':
2370 case 'u':
2371 case 'x':
2372 case 'i':
2373 /* the pointers are always 4 bytes aligned */
2374 bptr = (void *)(((unsigned long)bptr + 3) &
2375 ~3);
2376 switch (ls) {
2377 case 0:
2378 case 1:
2379 ls = long_size;
2380 break;
2381 case 2:
2382 ls = 8;
2383 default:
2384 break;
2385 }
2386 val = read_size(bptr, ls);
2387 bptr += ls;
2388 arg = malloc_or_die(sizeof(*arg));
2389 arg->next = NULL;
2390 arg->type = PRINT_ATOM;
2391 arg->atom.atom = malloc_or_die(32);
2392 sprintf(arg->atom.atom, "%lld", val);
2393 *next = arg;
2394 next = &arg->next;
2395 break;
2396 case 's':
2397 arg = malloc_or_die(sizeof(*arg));
2398 arg->next = NULL;
2399 arg->type = PRINT_STRING;
2400 arg->string.string = strdup(bptr);
2401 bptr += strlen(bptr) + 1;
2402 *next = arg;
2403 next = &arg->next;
2404 default:
2405 break;
2406 }
2407 }
2408 }
2409
2410 return args;
2411 }
2412
2413 static void free_args(struct print_arg *args)
2414 {
2415 struct print_arg *next;
2416
2417 while (args) {
2418 next = args->next;
2419
2420 if (args->type == PRINT_ATOM)
2421 free(args->atom.atom);
2422 else
2423 free(args->string.string);
2424 free(args);
2425 args = next;
2426 }
2427 }
2428
2429 static char *get_bprint_format(void *data, int size __unused, struct event *event)
2430 {
2431 unsigned long long addr;
2432 static struct format_field *field;
2433 struct printk_map *printk;
2434 char *format;
2435 char *p;
2436
2437 if (!field) {
2438 field = find_field(event, "fmt");
2439 if (!field)
2440 die("can't find format field for binary printk");
2441 printf("field->offset = %d size=%d\n", field->offset, field->size);
2442 }
2443
2444 addr = read_size(data + field->offset, field->size);
2445
2446 printk = find_printk(addr);
2447 if (!printk) {
2448 format = malloc_or_die(45);
2449 sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n",
2450 addr);
2451 return format;
2452 }
2453
2454 p = printk->printk;
2455 /* Remove any quotes. */
2456 if (*p == '"')
2457 p++;
2458 format = malloc_or_die(strlen(p) + 10);
2459 sprintf(format, "%s : %s", "%pf", p);
2460 /* remove ending quotes and new line since we will add one too */
2461 p = format + strlen(format) - 1;
2462 if (*p == '"')
2463 *p = 0;
2464
2465 p -= 2;
2466 if (strcmp(p, "\\n") == 0)
2467 *p = 0;
2468
2469 return format;
2470 }
2471
2472 static void pretty_print(void *data, int size, struct event *event)
2473 {
2474 struct print_fmt *print_fmt = &event->print_fmt;
2475 struct print_arg *arg = print_fmt->args;
2476 struct print_arg *args = NULL;
2477 const char *ptr = print_fmt->format;
2478 unsigned long long val;
2479 struct func_map *func;
2480 const char *saveptr;
2481 char *bprint_fmt = NULL;
2482 char format[32];
2483 int show_func;
2484 int len;
2485 int ls;
2486
2487 if (event->flags & EVENT_FL_ISFUNC)
2488 ptr = " %pF <-- %pF";
2489
2490 if (event->flags & EVENT_FL_ISBPRINT) {
2491 bprint_fmt = get_bprint_format(data, size, event);
2492 args = make_bprint_args(bprint_fmt, data, size, event);
2493 arg = args;
2494 ptr = bprint_fmt;
2495 }
2496
2497 for (; *ptr; ptr++) {
2498 ls = 0;
2499 if (*ptr == '\\') {
2500 ptr++;
2501 switch (*ptr) {
2502 case 'n':
2503 printf("\n");
2504 break;
2505 case 't':
2506 printf("\t");
2507 break;
2508 case 'r':
2509 printf("\r");
2510 break;
2511 case '\\':
2512 printf("\\");
2513 break;
2514 default:
2515 printf("%c", *ptr);
2516 break;
2517 }
2518
2519 } else if (*ptr == '%') {
2520 saveptr = ptr;
2521 show_func = 0;
2522 cont_process:
2523 ptr++;
2524 switch (*ptr) {
2525 case '%':
2526 printf("%%");
2527 break;
2528 case 'l':
2529 ls++;
2530 goto cont_process;
2531 case 'L':
2532 ls = 2;
2533 goto cont_process;
2534 case 'z':
2535 case 'Z':
2536 case '0' ... '9':
2537 goto cont_process;
2538 case 'p':
2539 if (long_size == 4)
2540 ls = 1;
2541 else
2542 ls = 2;
2543
2544 if (*(ptr+1) == 'F' ||
2545 *(ptr+1) == 'f') {
2546 ptr++;
2547 show_func = *ptr;
2548 }
2549
2550 /* fall through */
2551 case 'd':
2552 case 'i':
2553 case 'x':
2554 case 'X':
2555 case 'u':
2556 if (!arg)
2557 die("no argument match");
2558
2559 len = ((unsigned long)ptr + 1) -
2560 (unsigned long)saveptr;
2561
2562 /* should never happen */
2563 if (len > 32)
2564 die("bad format!");
2565
2566 memcpy(format, saveptr, len);
2567 format[len] = 0;
2568
2569 val = eval_num_arg(data, size, event, arg);
2570 arg = arg->next;
2571
2572 if (show_func) {
2573 func = find_func(val);
2574 if (func) {
2575 printf("%s", func->func);
2576 if (show_func == 'F')
2577 printf("+0x%llx",
2578 val - func->addr);
2579 break;
2580 }
2581 }
2582 switch (ls) {
2583 case 0:
2584 printf(format, (int)val);
2585 break;
2586 case 1:
2587 printf(format, (long)val);
2588 break;
2589 case 2:
2590 printf(format, (long long)val);
2591 break;
2592 default:
2593 die("bad count (%d)", ls);
2594 }
2595 break;
2596 case 's':
2597 if (!arg)
2598 die("no matching argument");
2599
2600 print_str_arg(data, size, event, arg);
2601 arg = arg->next;
2602 break;
2603 default:
2604 printf(">%c<", *ptr);
2605
2606 }
2607 } else
2608 printf("%c", *ptr);
2609 }
2610
2611 if (args) {
2612 free_args(args);
2613 free(bprint_fmt);
2614 }
2615 }
2616
2617 static inline int log10_cpu(int nb)
2618 {
2619 if (nb / 100)
2620 return 3;
2621 if (nb / 10)
2622 return 2;
2623 return 1;
2624 }
2625
2626 static void print_lat_fmt(void *data, int size __unused)
2627 {
2628 unsigned int lat_flags;
2629 unsigned int pc;
2630 int lock_depth;
2631 int hardirq;
2632 int softirq;
2633
2634 lat_flags = parse_common_flags(data);
2635 pc = parse_common_pc(data);
2636 lock_depth = parse_common_lock_depth(data);
2637
2638 hardirq = lat_flags & TRACE_FLAG_HARDIRQ;
2639 softirq = lat_flags & TRACE_FLAG_SOFTIRQ;
2640
2641 printf("%c%c%c",
2642 (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
2643 (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ?
2644 'X' : '.',
2645 (lat_flags & TRACE_FLAG_NEED_RESCHED) ?
2646 'N' : '.',
2647 (hardirq && softirq) ? 'H' :
2648 hardirq ? 'h' : softirq ? 's' : '.');
2649
2650 if (pc)
2651 printf("%x", pc);
2652 else
2653 printf(".");
2654
2655 if (lock_depth < 0)
2656 printf(". ");
2657 else
2658 printf("%d ", lock_depth);
2659 }
2660
2661 #define TRACE_GRAPH_INDENT 2
2662
2663 static struct record *
2664 get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func,
2665 struct record *next)
2666 {
2667 struct format_field *field;
2668 struct event *event;
2669 unsigned long val;
2670 int type;
2671 int pid;
2672
2673 type = trace_parse_common_type(next->data);
2674 event = trace_find_event(type);
2675 if (!event)
2676 return NULL;
2677
2678 if (!(event->flags & EVENT_FL_ISFUNCRET))
2679 return NULL;
2680
2681 pid = trace_parse_common_pid(next->data);
2682 field = find_field(event, "func");
2683 if (!field)
2684 die("function return does not have field func");
2685
2686 val = read_size(next->data + field->offset, field->size);
2687
2688 if (cur_pid != pid || cur_func != val)
2689 return NULL;
2690
2691 /* this is a leaf, now advance the iterator */
2692 return trace_read_data(cpu);
2693 }
2694
2695 /* Signal a overhead of time execution to the output */
2696 static void print_graph_overhead(unsigned long long duration)
2697 {
2698 /* Non nested entry or return */
2699 if (duration == ~0ULL)
2700 return (void)printf(" ");
2701
2702 /* Duration exceeded 100 msecs */
2703 if (duration > 100000ULL)
2704 return (void)printf("! ");
2705
2706 /* Duration exceeded 10 msecs */
2707 if (duration > 10000ULL)
2708 return (void)printf("+ ");
2709
2710 printf(" ");
2711 }
2712
2713 static void print_graph_duration(unsigned long long duration)
2714 {
2715 unsigned long usecs = duration / 1000;
2716 unsigned long nsecs_rem = duration % 1000;
2717 /* log10(ULONG_MAX) + '\0' */
2718 char msecs_str[21];
2719 char nsecs_str[5];
2720 int len;
2721 int i;
2722
2723 sprintf(msecs_str, "%lu", usecs);
2724
2725 /* Print msecs */
2726 len = printf("%lu", usecs);
2727
2728 /* Print nsecs (we don't want to exceed 7 numbers) */
2729 if (len < 7) {
2730 snprintf(nsecs_str, 8 - len, "%03lu", nsecs_rem);
2731 len += printf(".%s", nsecs_str);
2732 }
2733
2734 printf(" us ");
2735
2736 /* Print remaining spaces to fit the row's width */
2737 for (i = len; i < 7; i++)
2738 printf(" ");
2739
2740 printf("| ");
2741 }
2742
2743 static void
2744 print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec)
2745 {
2746 unsigned long long rettime, calltime;
2747 unsigned long long duration, depth;
2748 unsigned long long val;
2749 struct format_field *field;
2750 struct func_map *func;
2751 struct event *ret_event;
2752 int type;
2753 int i;
2754
2755 type = trace_parse_common_type(ret_rec->data);
2756 ret_event = trace_find_event(type);
2757
2758 field = find_field(ret_event, "rettime");
2759 if (!field)
2760 die("can't find rettime in return graph");
2761 rettime = read_size(ret_rec->data + field->offset, field->size);
2762
2763 field = find_field(ret_event, "calltime");
2764 if (!field)
2765 die("can't find rettime in return graph");
2766 calltime = read_size(ret_rec->data + field->offset, field->size);
2767
2768 duration = rettime - calltime;
2769
2770 /* Overhead */
2771 print_graph_overhead(duration);
2772
2773 /* Duration */
2774 print_graph_duration(duration);
2775
2776 field = find_field(event, "depth");
2777 if (!field)
2778 die("can't find depth in entry graph");
2779 depth = read_size(data + field->offset, field->size);
2780
2781 /* Function */
2782 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2783 printf(" ");
2784
2785 field = find_field(event, "func");
2786 if (!field)
2787 die("can't find func in entry graph");
2788 val = read_size(data + field->offset, field->size);
2789 func = find_func(val);
2790
2791 if (func)
2792 printf("%s();", func->func);
2793 else
2794 printf("%llx();", val);
2795 }
2796
2797 static void print_graph_nested(struct event *event, void *data)
2798 {
2799 struct format_field *field;
2800 unsigned long long depth;
2801 unsigned long long val;
2802 struct func_map *func;
2803 int i;
2804
2805 /* No overhead */
2806 print_graph_overhead(-1);
2807
2808 /* No time */
2809 printf(" | ");
2810
2811 field = find_field(event, "depth");
2812 if (!field)
2813 die("can't find depth in entry graph");
2814 depth = read_size(data + field->offset, field->size);
2815
2816 /* Function */
2817 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2818 printf(" ");
2819
2820 field = find_field(event, "func");
2821 if (!field)
2822 die("can't find func in entry graph");
2823 val = read_size(data + field->offset, field->size);
2824 func = find_func(val);
2825
2826 if (func)
2827 printf("%s() {", func->func);
2828 else
2829 printf("%llx() {", val);
2830 }
2831
2832 static void
2833 pretty_print_func_ent(void *data, int size, struct event *event,
2834 int cpu, int pid)
2835 {
2836 struct format_field *field;
2837 struct record *rec;
2838 void *copy_data;
2839 unsigned long val;
2840
2841 if (latency_format) {
2842 print_lat_fmt(data, size);
2843 printf(" | ");
2844 }
2845
2846 field = find_field(event, "func");
2847 if (!field)
2848 die("function entry does not have func field");
2849
2850 val = read_size(data + field->offset, field->size);
2851
2852 /*
2853 * peek_data may unmap the data pointer. Copy it first.
2854 */
2855 copy_data = malloc_or_die(size);
2856 memcpy(copy_data, data, size);
2857 data = copy_data;
2858
2859 rec = trace_peek_data(cpu);
2860 if (rec) {
2861 rec = get_return_for_leaf(cpu, pid, val, rec);
2862 if (rec) {
2863 print_graph_entry_leaf(event, data, rec);
2864 goto out_free;
2865 }
2866 }
2867 print_graph_nested(event, data);
2868 out_free:
2869 free(data);
2870 }
2871
2872 static void
2873 pretty_print_func_ret(void *data, int size __unused, struct event *event)
2874 {
2875 unsigned long long rettime, calltime;
2876 unsigned long long duration, depth;
2877 struct format_field *field;
2878 int i;
2879
2880 if (latency_format) {
2881 print_lat_fmt(data, size);
2882 printf(" | ");
2883 }
2884
2885 field = find_field(event, "rettime");
2886 if (!field)
2887 die("can't find rettime in return graph");
2888 rettime = read_size(data + field->offset, field->size);
2889
2890 field = find_field(event, "calltime");
2891 if (!field)
2892 die("can't find calltime in return graph");
2893 calltime = read_size(data + field->offset, field->size);
2894
2895 duration = rettime - calltime;
2896
2897 /* Overhead */
2898 print_graph_overhead(duration);
2899
2900 /* Duration */
2901 print_graph_duration(duration);
2902
2903 field = find_field(event, "depth");
2904 if (!field)
2905 die("can't find depth in entry graph");
2906 depth = read_size(data + field->offset, field->size);
2907
2908 /* Function */
2909 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2910 printf(" ");
2911
2912 printf("}");
2913 }
2914
2915 static void
2916 pretty_print_func_graph(void *data, int size, struct event *event,
2917 int cpu, int pid)
2918 {
2919 if (event->flags & EVENT_FL_ISFUNCENT)
2920 pretty_print_func_ent(data, size, event, cpu, pid);
2921 else if (event->flags & EVENT_FL_ISFUNCRET)
2922 pretty_print_func_ret(data, size, event);
2923 printf("\n");
2924 }
2925
2926 void print_trace_event(int cpu, void *data, int size)
2927 {
2928 struct event *event;
2929 int type;
2930 int pid;
2931
2932 type = trace_parse_common_type(data);
2933
2934 event = trace_find_event(type);
2935 if (!event) {
2936 warning("ug! no event found for type %d", type);
2937 return;
2938 }
2939
2940 pid = trace_parse_common_pid(data);
2941
2942 if (event->flags & (EVENT_FL_ISFUNCENT | EVENT_FL_ISFUNCRET))
2943 return pretty_print_func_graph(data, size, event, cpu, pid);
2944
2945 if (latency_format)
2946 print_lat_fmt(data, size);
2947
2948 if (event->flags & EVENT_FL_FAILED) {
2949 printf("EVENT '%s' FAILED TO PARSE\n",
2950 event->name);
2951 return;
2952 }
2953
2954 pretty_print(data, size, event);
2955 }
2956
2957 static void print_fields(struct print_flag_sym *field)
2958 {
2959 printf("{ %s, %s }", field->value, field->str);
2960 if (field->next) {
2961 printf(", ");
2962 print_fields(field->next);
2963 }
2964 }
2965
2966 static void print_args(struct print_arg *args)
2967 {
2968 int print_paren = 1;
2969
2970 switch (args->type) {
2971 case PRINT_NULL:
2972 printf("null");
2973 break;
2974 case PRINT_ATOM:
2975 printf("%s", args->atom.atom);
2976 break;
2977 case PRINT_FIELD:
2978 printf("REC->%s", args->field.name);
2979 break;
2980 case PRINT_FLAGS:
2981 printf("__print_flags(");
2982 print_args(args->flags.field);
2983 printf(", %s, ", args->flags.delim);
2984 print_fields(args->flags.flags);
2985 printf(")");
2986 break;
2987 case PRINT_SYMBOL:
2988 printf("__print_symbolic(");
2989 print_args(args->symbol.field);
2990 printf(", ");
2991 print_fields(args->symbol.symbols);
2992 printf(")");
2993 break;
2994 case PRINT_STRING:
2995 printf("__get_str(%s)", args->string.string);
2996 break;
2997 case PRINT_TYPE:
2998 printf("(%s)", args->typecast.type);
2999 print_args(args->typecast.item);
3000 break;
3001 case PRINT_OP:
3002 if (strcmp(args->op.op, ":") == 0)
3003 print_paren = 0;
3004 if (print_paren)
3005 printf("(");
3006 print_args(args->op.left);
3007 printf(" %s ", args->op.op);
3008 print_args(args->op.right);
3009 if (print_paren)
3010 printf(")");
3011 break;
3012 default:
3013 /* we should warn... */
3014 return;
3015 }
3016 if (args->next) {
3017 printf("\n");
3018 print_args(args->next);
3019 }
3020 }
3021
3022 int parse_ftrace_file(char *buf, unsigned long size)
3023 {
3024 struct format_field *field;
3025 struct print_arg *arg, **list;
3026 struct event *event;
3027 int ret;
3028
3029 init_input_buf(buf, size);
3030
3031 event = alloc_event();
3032 if (!event)
3033 return -ENOMEM;
3034
3035 event->flags |= EVENT_FL_ISFTRACE;
3036
3037 event->name = event_read_name();
3038 if (!event->name)
3039 die("failed to read ftrace event name");
3040
3041 if (strcmp(event->name, "function") == 0)
3042 event->flags |= EVENT_FL_ISFUNC;
3043
3044 else if (strcmp(event->name, "funcgraph_entry") == 0)
3045 event->flags |= EVENT_FL_ISFUNCENT;
3046
3047 else if (strcmp(event->name, "funcgraph_exit") == 0)
3048 event->flags |= EVENT_FL_ISFUNCRET;
3049
3050 else if (strcmp(event->name, "bprint") == 0)
3051 event->flags |= EVENT_FL_ISBPRINT;
3052
3053 event->id = event_read_id();
3054 if (event->id < 0)
3055 die("failed to read ftrace event id");
3056
3057 add_event(event);
3058
3059 ret = event_read_format(event);
3060 if (ret < 0)
3061 die("failed to read ftrace event format");
3062
3063 ret = event_read_print(event);
3064 if (ret < 0)
3065 die("failed to read ftrace event print fmt");
3066
3067 /* New ftrace handles args */
3068 if (ret > 0)
3069 return 0;
3070 /*
3071 * The arguments for ftrace files are parsed by the fields.
3072 * Set up the fields as their arguments.
3073 */
3074 list = &event->print_fmt.args;
3075 for (field = event->format.fields; field; field = field->next) {
3076 arg = malloc_or_die(sizeof(*arg));
3077 memset(arg, 0, sizeof(*arg));
3078 *list = arg;
3079 list = &arg->next;
3080 arg->type = PRINT_FIELD;
3081 arg->field.name = field->name;
3082 arg->field.field = field;
3083 }
3084 return 0;
3085 }
3086
3087 int parse_event_file(char *buf, unsigned long size, char *sys)
3088 {
3089 struct event *event;
3090 int ret;
3091
3092 init_input_buf(buf, size);
3093
3094 event = alloc_event();
3095 if (!event)
3096 return -ENOMEM;
3097
3098 event->name = event_read_name();
3099 if (!event->name)
3100 die("failed to read event name");
3101
3102 event->id = event_read_id();
3103 if (event->id < 0)
3104 die("failed to read event id");
3105
3106 ret = event_read_format(event);
3107 if (ret < 0) {
3108 warning("failed to read event format for %s", event->name);
3109 goto event_failed;
3110 }
3111
3112 ret = event_read_print(event);
3113 if (ret < 0) {
3114 warning("failed to read event print fmt for %s", event->name);
3115 goto event_failed;
3116 }
3117
3118 event->system = strdup(sys);
3119
3120 #define PRINT_ARGS 0
3121 if (PRINT_ARGS && event->print_fmt.args)
3122 print_args(event->print_fmt.args);
3123
3124 add_event(event);
3125 return 0;
3126
3127 event_failed:
3128 event->flags |= EVENT_FL_FAILED;
3129 /* still add it even if it failed */
3130 add_event(event);
3131 return -1;
3132 }
3133
3134 void parse_set_info(int nr_cpus, int long_sz)
3135 {
3136 cpus = nr_cpus;
3137 long_size = long_sz;
3138 }
3139
3140 int common_pc(struct scripting_context *context)
3141 {
3142 return parse_common_pc(context->event_data);
3143 }
3144
3145 int common_flags(struct scripting_context *context)
3146 {
3147 return parse_common_flags(context->event_data);
3148 }
3149
3150 int common_lock_depth(struct scripting_context *context)
3151 {
3152 return parse_common_lock_depth(context->event_data);
3153 }
Linux kernel - Deliverables
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