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fs/ext4/inode.c: use pr_warn_ratelimited()
[linux/fpc-iii.git] / tools / perf / util / trace-event-parse.c
blob73a02223c62922125b0dddb97e8a26099d8fdcd8
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_overwrite_offset;
41 int header_page_overwrite_size;
42 int header_page_data_offset;
43 int header_page_data_size;
44
45 bool latency_format;
46
47 static char *input_buf;
48 static unsigned long long input_buf_ptr;
49 static unsigned long long input_buf_siz;
50
51 static int cpus;
52 static int long_size;
53 static int is_flag_field;
54 static int is_symbolic_field;
55
56 static struct format_field *
57 find_any_field(struct event *event, const char *name);
58
59 static void init_input_buf(char *buf, unsigned long long size)
60 {
61 input_buf = buf;
62 input_buf_siz = size;
63 input_buf_ptr = 0;
64 }
65
66 struct cmdline {
67 char *comm;
68 int pid;
69 };
70
71 static struct cmdline *cmdlines;
72 static int cmdline_count;
73
74 static int cmdline_cmp(const void *a, const void *b)
75 {
76 const struct cmdline *ca = a;
77 const struct cmdline *cb = b;
78
79 if (ca->pid < cb->pid)
80 return -1;
81 if (ca->pid > cb->pid)
82 return 1;
83
84 return 0;
85 }
86
87 void parse_cmdlines(char *file, int size __unused)
88 {
89 struct cmdline_list {
90 struct cmdline_list *next;
91 char *comm;
92 int pid;
93 } *list = NULL, *item;
94 char *line;
95 char *next = NULL;
96 int i;
97
98 line = strtok_r(file, "\n", &next);
99 while (line) {
100 item = malloc_or_die(sizeof(*item));
101 sscanf(line, "%d %as", &item->pid,
102 (float *)(void *)&item->comm); /* workaround gcc warning */
103 item->next = list;
104 list = item;
105 line = strtok_r(NULL, "\n", &next);
106 cmdline_count++;
107 }
108
109 cmdlines = malloc_or_die(sizeof(*cmdlines) * cmdline_count);
110
111 i = 0;
112 while (list) {
113 cmdlines[i].pid = list->pid;
114 cmdlines[i].comm = list->comm;
115 i++;
116 item = list;
117 list = list->next;
118 free(item);
119 }
120
121 qsort(cmdlines, cmdline_count, sizeof(*cmdlines), cmdline_cmp);
122 }
123
124 static struct func_map {
125 unsigned long long addr;
126 char *func;
127 char *mod;
128 } *func_list;
129 static unsigned int func_count;
130
131 static int func_cmp(const void *a, const void *b)
132 {
133 const struct func_map *fa = a;
134 const struct func_map *fb = b;
135
136 if (fa->addr < fb->addr)
137 return -1;
138 if (fa->addr > fb->addr)
139 return 1;
140
141 return 0;
142 }
143
144 void parse_proc_kallsyms(char *file, unsigned int size __unused)
145 {
146 struct func_list {
147 struct func_list *next;
148 unsigned long long addr;
149 char *func;
150 char *mod;
151 } *list = NULL, *item;
152 char *line;
153 char *next = NULL;
154 char *addr_str;
155 char ch;
156 int ret;
157 int i;
158
159 line = strtok_r(file, "\n", &next);
160 while (line) {
161 item = malloc_or_die(sizeof(*item));
162 item->mod = NULL;
163 ret = sscanf(line, "%as %c %as\t[%as",
164 (float *)(void *)&addr_str, /* workaround gcc warning */
165 &ch,
166 (float *)(void *)&item->func,
167 (float *)(void *)&item->mod);
168 item->addr = strtoull(addr_str, NULL, 16);
169 free(addr_str);
170
171 /* truncate the extra ']' */
172 if (item->mod)
173 item->mod[strlen(item->mod) - 1] = 0;
174
175
176 item->next = list;
177 list = item;
178 line = strtok_r(NULL, "\n", &next);
179 func_count++;
180 }
181
182 func_list = malloc_or_die(sizeof(*func_list) * (func_count + 1));
183
184 i = 0;
185 while (list) {
186 func_list[i].func = list->func;
187 func_list[i].addr = list->addr;
188 func_list[i].mod = list->mod;
189 i++;
190 item = list;
191 list = list->next;
192 free(item);
193 }
194
195 qsort(func_list, func_count, sizeof(*func_list), func_cmp);
196
197 /*
198 * Add a special record at the end.
199 */
200 func_list[func_count].func = NULL;
201 func_list[func_count].addr = 0;
202 func_list[func_count].mod = NULL;
203 }
204
205 /*
206 * We are searching for a record in between, not an exact
207 * match.
208 */
209 static int func_bcmp(const void *a, const void *b)
210 {
211 const struct func_map *fa = a;
212 const struct func_map *fb = b;
213
214 if ((fa->addr == fb->addr) ||
215
216 (fa->addr > fb->addr &&
217 fa->addr < (fb+1)->addr))
218 return 0;
219
220 if (fa->addr < fb->addr)
221 return -1;
222
223 return 1;
224 }
225
226 static struct func_map *find_func(unsigned long long addr)
227 {
228 struct func_map *func;
229 struct func_map key;
230
231 key.addr = addr;
232
233 func = bsearch(&key, func_list, func_count, sizeof(*func_list),
234 func_bcmp);
235
236 return func;
237 }
238
239 void print_funcs(void)
240 {
241 int i;
242
243 for (i = 0; i < (int)func_count; i++) {
244 printf("%016llx %s",
245 func_list[i].addr,
246 func_list[i].func);
247 if (func_list[i].mod)
248 printf(" [%s]\n", func_list[i].mod);
249 else
250 printf("\n");
251 }
252 }
253
254 static struct printk_map {
255 unsigned long long addr;
256 char *printk;
257 } *printk_list;
258 static unsigned int printk_count;
259
260 static int printk_cmp(const void *a, const void *b)
261 {
262 const struct func_map *fa = a;
263 const struct func_map *fb = b;
264
265 if (fa->addr < fb->addr)
266 return -1;
267 if (fa->addr > fb->addr)
268 return 1;
269
270 return 0;
271 }
272
273 static struct printk_map *find_printk(unsigned long long addr)
274 {
275 struct printk_map *printk;
276 struct printk_map key;
277
278 key.addr = addr;
279
280 printk = bsearch(&key, printk_list, printk_count, sizeof(*printk_list),
281 printk_cmp);
282
283 return printk;
284 }
285
286 void parse_ftrace_printk(char *file, unsigned int size __unused)
287 {
288 struct printk_list {
289 struct printk_list *next;
290 unsigned long long addr;
291 char *printk;
292 } *list = NULL, *item;
293 char *line;
294 char *next = NULL;
295 char *addr_str;
296 int i;
297
298 line = strtok_r(file, "\n", &next);
299 while (line) {
300 addr_str = strsep(&line, ":");
301 if (!line) {
302 warning("error parsing print strings");
303 break;
304 }
305 item = malloc_or_die(sizeof(*item));
306 item->addr = strtoull(addr_str, NULL, 16);
307 /* fmt still has a space, skip it */
308 item->printk = strdup(line+1);
309 item->next = list;
310 list = item;
311 line = strtok_r(NULL, "\n", &next);
312 printk_count++;
313 }
314
315 printk_list = malloc_or_die(sizeof(*printk_list) * printk_count + 1);
316
317 i = 0;
318 while (list) {
319 printk_list[i].printk = list->printk;
320 printk_list[i].addr = list->addr;
321 i++;
322 item = list;
323 list = list->next;
324 free(item);
325 }
326
327 qsort(printk_list, printk_count, sizeof(*printk_list), printk_cmp);
328 }
329
330 void print_printk(void)
331 {
332 int i;
333
334 for (i = 0; i < (int)printk_count; i++) {
335 printf("%016llx %s\n",
336 printk_list[i].addr,
337 printk_list[i].printk);
338 }
339 }
340
341 static struct event *alloc_event(void)
342 {
343 struct event *event;
344
345 event = malloc_or_die(sizeof(*event));
346 memset(event, 0, sizeof(*event));
347
348 return event;
349 }
350
351 enum event_type {
352 EVENT_ERROR,
353 EVENT_NONE,
354 EVENT_SPACE,
355 EVENT_NEWLINE,
356 EVENT_OP,
357 EVENT_DELIM,
358 EVENT_ITEM,
359 EVENT_DQUOTE,
360 EVENT_SQUOTE,
361 };
362
363 static struct event *event_list;
364
365 static void add_event(struct event *event)
366 {
367 event->next = event_list;
368 event_list = event;
369 }
370
371 static int event_item_type(enum event_type type)
372 {
373 switch (type) {
374 case EVENT_ITEM ... EVENT_SQUOTE:
375 return 1;
376 case EVENT_ERROR ... EVENT_DELIM:
377 default:
378 return 0;
379 }
380 }
381
382 static void free_arg(struct print_arg *arg)
383 {
384 if (!arg)
385 return;
386
387 switch (arg->type) {
388 case PRINT_ATOM:
389 if (arg->atom.atom)
390 free(arg->atom.atom);
391 break;
392 case PRINT_NULL:
393 case PRINT_FIELD ... PRINT_OP:
394 default:
395 /* todo */
396 break;
397 }
398
399 free(arg);
400 }
401
402 static enum event_type get_type(int ch)
403 {
404 if (ch == '\n')
405 return EVENT_NEWLINE;
406 if (isspace(ch))
407 return EVENT_SPACE;
408 if (isalnum(ch) || ch == '_')
409 return EVENT_ITEM;
410 if (ch == '\'')
411 return EVENT_SQUOTE;
412 if (ch == '"')
413 return EVENT_DQUOTE;
414 if (!isprint(ch))
415 return EVENT_NONE;
416 if (ch == '(' || ch == ')' || ch == ',')
417 return EVENT_DELIM;
418
419 return EVENT_OP;
420 }
421
422 static int __read_char(void)
423 {
424 if (input_buf_ptr >= input_buf_siz)
425 return -1;
426
427 return input_buf[input_buf_ptr++];
428 }
429
430 static int __peek_char(void)
431 {
432 if (input_buf_ptr >= input_buf_siz)
433 return -1;
434
435 return input_buf[input_buf_ptr];
436 }
437
438 static enum event_type __read_token(char **tok)
439 {
440 char buf[BUFSIZ];
441 int ch, last_ch, quote_ch, next_ch;
442 int i = 0;
443 int tok_size = 0;
444 enum event_type type;
445
446 *tok = NULL;
447
448
449 ch = __read_char();
450 if (ch < 0)
451 return EVENT_NONE;
452
453 type = get_type(ch);
454 if (type == EVENT_NONE)
455 return type;
456
457 buf[i++] = ch;
458
459 switch (type) {
460 case EVENT_NEWLINE:
461 case EVENT_DELIM:
462 *tok = malloc_or_die(2);
463 (*tok)[0] = ch;
464 (*tok)[1] = 0;
465 return type;
466
467 case EVENT_OP:
468 switch (ch) {
469 case '-':
470 next_ch = __peek_char();
471 if (next_ch == '>') {
472 buf[i++] = __read_char();
473 break;
474 }
475 /* fall through */
476 case '+':
477 case '|':
478 case '&':
479 case '>':
480 case '<':
481 last_ch = ch;
482 ch = __peek_char();
483 if (ch != last_ch)
484 goto test_equal;
485 buf[i++] = __read_char();
486 switch (last_ch) {
487 case '>':
488 case '<':
489 goto test_equal;
490 default:
491 break;
492 }
493 break;
494 case '!':
495 case '=':
496 goto test_equal;
497 default: /* what should we do instead? */
498 break;
499 }
500 buf[i] = 0;
501 *tok = strdup(buf);
502 return type;
503
504 test_equal:
505 ch = __peek_char();
506 if (ch == '=')
507 buf[i++] = __read_char();
508 break;
509
510 case EVENT_DQUOTE:
511 case EVENT_SQUOTE:
512 /* don't keep quotes */
513 i--;
514 quote_ch = ch;
515 last_ch = 0;
516 do {
517 if (i == (BUFSIZ - 1)) {
518 buf[i] = 0;
519 if (*tok) {
520 *tok = realloc(*tok, tok_size + BUFSIZ);
521 if (!*tok)
522 return EVENT_NONE;
523 strcat(*tok, buf);
524 } else
525 *tok = strdup(buf);
526
527 if (!*tok)
528 return EVENT_NONE;
529 tok_size += BUFSIZ;
530 i = 0;
531 }
532 last_ch = ch;
533 ch = __read_char();
534 buf[i++] = ch;
535 /* the '\' '\' will cancel itself */
536 if (ch == '\\' && last_ch == '\\')
537 last_ch = 0;
538 } while (ch != quote_ch || last_ch == '\\');
539 /* remove the last quote */
540 i--;
541 goto out;
542
543 case EVENT_ERROR ... EVENT_SPACE:
544 case EVENT_ITEM:
545 default:
546 break;
547 }
548
549 while (get_type(__peek_char()) == type) {
550 if (i == (BUFSIZ - 1)) {
551 buf[i] = 0;
552 if (*tok) {
553 *tok = realloc(*tok, tok_size + BUFSIZ);
554 if (!*tok)
555 return EVENT_NONE;
556 strcat(*tok, buf);
557 } else
558 *tok = strdup(buf);
559
560 if (!*tok)
561 return EVENT_NONE;
562 tok_size += BUFSIZ;
563 i = 0;
564 }
565 ch = __read_char();
566 buf[i++] = ch;
567 }
568
569 out:
570 buf[i] = 0;
571 if (*tok) {
572 *tok = realloc(*tok, tok_size + i);
573 if (!*tok)
574 return EVENT_NONE;
575 strcat(*tok, buf);
576 } else
577 *tok = strdup(buf);
578 if (!*tok)
579 return EVENT_NONE;
580
581 return type;
582 }
583
584 static void free_token(char *tok)
585 {
586 if (tok)
587 free(tok);
588 }
589
590 static enum event_type read_token(char **tok)
591 {
592 enum event_type type;
593
594 for (;;) {
595 type = __read_token(tok);
596 if (type != EVENT_SPACE)
597 return type;
598
599 free_token(*tok);
600 }
601
602 /* not reached */
603 return EVENT_NONE;
604 }
605
606 /* no newline */
607 static enum event_type read_token_item(char **tok)
608 {
609 enum event_type type;
610
611 for (;;) {
612 type = __read_token(tok);
613 if (type != EVENT_SPACE && type != EVENT_NEWLINE)
614 return type;
615
616 free_token(*tok);
617 }
618
619 /* not reached */
620 return EVENT_NONE;
621 }
622
623 static int test_type(enum event_type type, enum event_type expect)
624 {
625 if (type != expect) {
626 warning("Error: expected type %d but read %d",
627 expect, type);
628 return -1;
629 }
630 return 0;
631 }
632
633 static int __test_type_token(enum event_type type, char *token,
634 enum event_type expect, const char *expect_tok,
635 bool warn)
636 {
637 if (type != expect) {
638 if (warn)
639 warning("Error: expected type %d but read %d",
640 expect, type);
641 return -1;
642 }
643
644 if (strcmp(token, expect_tok) != 0) {
645 if (warn)
646 warning("Error: expected '%s' but read '%s'",
647 expect_tok, token);
648 return -1;
649 }
650 return 0;
651 }
652
653 static int test_type_token(enum event_type type, char *token,
654 enum event_type expect, const char *expect_tok)
655 {
656 return __test_type_token(type, token, expect, expect_tok, true);
657 }
658
659 static int __read_expect_type(enum event_type expect, char **tok, int newline_ok)
660 {
661 enum event_type type;
662
663 if (newline_ok)
664 type = read_token(tok);
665 else
666 type = read_token_item(tok);
667 return test_type(type, expect);
668 }
669
670 static int read_expect_type(enum event_type expect, char **tok)
671 {
672 return __read_expect_type(expect, tok, 1);
673 }
674
675 static int __read_expected(enum event_type expect, const char *str,
676 int newline_ok, bool warn)
677 {
678 enum event_type type;
679 char *token;
680 int ret;
681
682 if (newline_ok)
683 type = read_token(&token);
684 else
685 type = read_token_item(&token);
686
687 ret = __test_type_token(type, token, expect, str, warn);
688
689 free_token(token);
690
691 return ret;
692 }
693
694 static int read_expected(enum event_type expect, const char *str)
695 {
696 return __read_expected(expect, str, 1, true);
697 }
698
699 static int read_expected_item(enum event_type expect, const char *str)
700 {
701 return __read_expected(expect, str, 0, true);
702 }
703
704 static char *event_read_name(void)
705 {
706 char *token;
707
708 if (read_expected(EVENT_ITEM, "name") < 0)
709 return NULL;
710
711 if (read_expected(EVENT_OP, ":") < 0)
712 return NULL;
713
714 if (read_expect_type(EVENT_ITEM, &token) < 0)
715 goto fail;
716
717 return token;
718
719 fail:
720 free_token(token);
721 return NULL;
722 }
723
724 static int event_read_id(void)
725 {
726 char *token;
727 int id;
728
729 if (read_expected_item(EVENT_ITEM, "ID") < 0)
730 return -1;
731
732 if (read_expected(EVENT_OP, ":") < 0)
733 return -1;
734
735 if (read_expect_type(EVENT_ITEM, &token) < 0)
736 goto fail;
737
738 id = strtoul(token, NULL, 0);
739 free_token(token);
740 return id;
741
742 fail:
743 free_token(token);
744 return -1;
745 }
746
747 static int field_is_string(struct format_field *field)
748 {
749 if ((field->flags & FIELD_IS_ARRAY) &&
750 (!strstr(field->type, "char") || !strstr(field->type, "u8") ||
751 !strstr(field->type, "s8")))
752 return 1;
753
754 return 0;
755 }
756
757 static int field_is_dynamic(struct format_field *field)
758 {
759 if (!strncmp(field->type, "__data_loc", 10))
760 return 1;
761
762 return 0;
763 }
764
765 static int event_read_fields(struct event *event, struct format_field **fields)
766 {
767 struct format_field *field = NULL;
768 enum event_type type;
769 char *token;
770 char *last_token;
771 int count = 0;
772
773 do {
774 type = read_token(&token);
775 if (type == EVENT_NEWLINE) {
776 free_token(token);
777 return count;
778 }
779
780 count++;
781
782 if (test_type_token(type, token, EVENT_ITEM, "field"))
783 goto fail;
784 free_token(token);
785
786 type = read_token(&token);
787 /*
788 * The ftrace fields may still use the "special" name.
789 * Just ignore it.
790 */
791 if (event->flags & EVENT_FL_ISFTRACE &&
792 type == EVENT_ITEM && strcmp(token, "special") == 0) {
793 free_token(token);
794 type = read_token(&token);
795 }
796
797 if (test_type_token(type, token, EVENT_OP, ":") < 0)
798 return -1;
799
800 if (read_expect_type(EVENT_ITEM, &token) < 0)
801 goto fail;
802
803 last_token = token;
804
805 field = malloc_or_die(sizeof(*field));
806 memset(field, 0, sizeof(*field));
807
808 /* read the rest of the type */
809 for (;;) {
810 type = read_token(&token);
811 if (type == EVENT_ITEM ||
812 (type == EVENT_OP && strcmp(token, "*") == 0) ||
813 /*
814 * Some of the ftrace fields are broken and have
815 * an illegal "." in them.
816 */
817 (event->flags & EVENT_FL_ISFTRACE &&
818 type == EVENT_OP && strcmp(token, ".") == 0)) {
819
820 if (strcmp(token, "*") == 0)
821 field->flags |= FIELD_IS_POINTER;
822
823 if (field->type) {
824 field->type = realloc(field->type,
825 strlen(field->type) +
826 strlen(last_token) + 2);
827 strcat(field->type, " ");
828 strcat(field->type, last_token);
829 } else
830 field->type = last_token;
831 last_token = token;
832 continue;
833 }
834
835 break;
836 }
837
838 if (!field->type) {
839 die("no type found");
840 goto fail;
841 }
842 field->name = last_token;
843
844 if (test_type(type, EVENT_OP))
845 goto fail;
846
847 if (strcmp(token, "[") == 0) {
848 enum event_type last_type = type;
849 char *brackets = token;
850 int len;
851
852 field->flags |= FIELD_IS_ARRAY;
853
854 type = read_token(&token);
855 while (strcmp(token, "]") != 0) {
856 if (last_type == EVENT_ITEM &&
857 type == EVENT_ITEM)
858 len = 2;
859 else
860 len = 1;
861 last_type = type;
862
863 brackets = realloc(brackets,
864 strlen(brackets) +
865 strlen(token) + len);
866 if (len == 2)
867 strcat(brackets, " ");
868 strcat(brackets, token);
869 free_token(token);
870 type = read_token(&token);
871 if (type == EVENT_NONE) {
872 die("failed to find token");
873 goto fail;
874 }
875 }
876
877 free_token(token);
878
879 brackets = realloc(brackets, strlen(brackets) + 2);
880 strcat(brackets, "]");
881
882 /* add brackets to type */
883
884 type = read_token(&token);
885 /*
886 * If the next token is not an OP, then it is of
887 * the format: type [] item;
888 */
889 if (type == EVENT_ITEM) {
890 field->type = realloc(field->type,
891 strlen(field->type) +
892 strlen(field->name) +
893 strlen(brackets) + 2);
894 strcat(field->type, " ");
895 strcat(field->type, field->name);
896 free_token(field->name);
897 strcat(field->type, brackets);
898 field->name = token;
899 type = read_token(&token);
900 } else {
901 field->type = realloc(field->type,
902 strlen(field->type) +
903 strlen(brackets) + 1);
904 strcat(field->type, brackets);
905 }
906 free(brackets);
907 }
908
909 if (field_is_string(field)) {
910 field->flags |= FIELD_IS_STRING;
911 if (field_is_dynamic(field))
912 field->flags |= FIELD_IS_DYNAMIC;
913 }
914
915 if (test_type_token(type, token, EVENT_OP, ";"))
916 goto fail;
917 free_token(token);
918
919 if (read_expected(EVENT_ITEM, "offset") < 0)
920 goto fail_expect;
921
922 if (read_expected(EVENT_OP, ":") < 0)
923 goto fail_expect;
924
925 if (read_expect_type(EVENT_ITEM, &token))
926 goto fail;
927 field->offset = strtoul(token, NULL, 0);
928 free_token(token);
929
930 if (read_expected(EVENT_OP, ";") < 0)
931 goto fail_expect;
932
933 if (read_expected(EVENT_ITEM, "size") < 0)
934 goto fail_expect;
935
936 if (read_expected(EVENT_OP, ":") < 0)
937 goto fail_expect;
938
939 if (read_expect_type(EVENT_ITEM, &token))
940 goto fail;
941 field->size = strtoul(token, NULL, 0);
942 free_token(token);
943
944 if (read_expected(EVENT_OP, ";") < 0)
945 goto fail_expect;
946
947 type = read_token(&token);
948 if (type != EVENT_NEWLINE) {
949 /* newer versions of the kernel have a "signed" type */
950 if (test_type_token(type, token, EVENT_ITEM, "signed"))
951 goto fail;
952
953 free_token(token);
954
955 if (read_expected(EVENT_OP, ":") < 0)
956 goto fail_expect;
957
958 if (read_expect_type(EVENT_ITEM, &token))
959 goto fail;
960
961 if (strtoul(token, NULL, 0))
962 field->flags |= FIELD_IS_SIGNED;
963
964 free_token(token);
965 if (read_expected(EVENT_OP, ";") < 0)
966 goto fail_expect;
967
968 if (read_expect_type(EVENT_NEWLINE, &token))
969 goto fail;
970 }
971
972 free_token(token);
973
974 *fields = field;
975 fields = &field->next;
976
977 } while (1);
978
979 return 0;
980
981 fail:
982 free_token(token);
983 fail_expect:
984 if (field)
985 free(field);
986 return -1;
987 }
988
989 static int event_read_format(struct event *event)
990 {
991 char *token;
992 int ret;
993
994 if (read_expected_item(EVENT_ITEM, "format") < 0)
995 return -1;
996
997 if (read_expected(EVENT_OP, ":") < 0)
998 return -1;
999
1000 if (read_expect_type(EVENT_NEWLINE, &token))
1001 goto fail;
1002 free_token(token);
1003
1004 ret = event_read_fields(event, &event->format.common_fields);
1005 if (ret < 0)
1006 return ret;
1007 event->format.nr_common = ret;
1008
1009 ret = event_read_fields(event, &event->format.fields);
1010 if (ret < 0)
1011 return ret;
1012 event->format.nr_fields = ret;
1013
1014 return 0;
1015
1016 fail:
1017 free_token(token);
1018 return -1;
1019 }
1020
1021 enum event_type
1022 process_arg_token(struct event *event, struct print_arg *arg,
1023 char **tok, enum event_type type);
1024
1025 static enum event_type
1026 process_arg(struct event *event, struct print_arg *arg, char **tok)
1027 {
1028 enum event_type type;
1029 char *token;
1030
1031 type = read_token(&token);
1032 *tok = token;
1033
1034 return process_arg_token(event, arg, tok, type);
1035 }
1036
1037 static enum event_type
1038 process_cond(struct event *event, struct print_arg *top, char **tok)
1039 {
1040 struct print_arg *arg, *left, *right;
1041 enum event_type type;
1042 char *token = NULL;
1043
1044 arg = malloc_or_die(sizeof(*arg));
1045 memset(arg, 0, sizeof(*arg));
1046
1047 left = malloc_or_die(sizeof(*left));
1048
1049 right = malloc_or_die(sizeof(*right));
1050
1051 arg->type = PRINT_OP;
1052 arg->op.left = left;
1053 arg->op.right = right;
1054
1055 *tok = NULL;
1056 type = process_arg(event, left, &token);
1057 if (test_type_token(type, token, EVENT_OP, ":"))
1058 goto out_free;
1059
1060 arg->op.op = token;
1061
1062 type = process_arg(event, right, &token);
1063
1064 top->op.right = arg;
1065
1066 *tok = token;
1067 return type;
1068
1069 out_free:
1070 free_token(*tok);
1071 free(right);
1072 free(left);
1073 free_arg(arg);
1074 return EVENT_ERROR;
1075 }
1076
1077 static enum event_type
1078 process_array(struct event *event, struct print_arg *top, char **tok)
1079 {
1080 struct print_arg *arg;
1081 enum event_type type;
1082 char *token = NULL;
1083
1084 arg = malloc_or_die(sizeof(*arg));
1085 memset(arg, 0, sizeof(*arg));
1086
1087 *tok = NULL;
1088 type = process_arg(event, arg, &token);
1089 if (test_type_token(type, token, EVENT_OP, "]"))
1090 goto out_free;
1091
1092 top->op.right = arg;
1093
1094 free_token(token);
1095 type = read_token_item(&token);
1096 *tok = token;
1097
1098 return type;
1099
1100 out_free:
1101 free_token(*tok);
1102 free_arg(arg);
1103 return EVENT_ERROR;
1104 }
1105
1106 static int get_op_prio(char *op)
1107 {
1108 if (!op[1]) {
1109 switch (op[0]) {
1110 case '*':
1111 case '/':
1112 case '%':
1113 return 6;
1114 case '+':
1115 case '-':
1116 return 7;
1117 /* '>>' and '<<' are 8 */
1118 case '<':
1119 case '>':
1120 return 9;
1121 /* '==' and '!=' are 10 */
1122 case '&':
1123 return 11;
1124 case '^':
1125 return 12;
1126 case '|':
1127 return 13;
1128 case '?':
1129 return 16;
1130 default:
1131 die("unknown op '%c'", op[0]);
1132 return -1;
1133 }
1134 } else {
1135 if (strcmp(op, "++") == 0 ||
1136 strcmp(op, "--") == 0) {
1137 return 3;
1138 } else if (strcmp(op, ">>") == 0 ||
1139 strcmp(op, "<<") == 0) {
1140 return 8;
1141 } else if (strcmp(op, ">=") == 0 ||
1142 strcmp(op, "<=") == 0) {
1143 return 9;
1144 } else if (strcmp(op, "==") == 0 ||
1145 strcmp(op, "!=") == 0) {
1146 return 10;
1147 } else if (strcmp(op, "&&") == 0) {
1148 return 14;
1149 } else if (strcmp(op, "||") == 0) {
1150 return 15;
1151 } else {
1152 die("unknown op '%s'", op);
1153 return -1;
1154 }
1155 }
1156 }
1157
1158 static void set_op_prio(struct print_arg *arg)
1159 {
1160
1161 /* single ops are the greatest */
1162 if (!arg->op.left || arg->op.left->type == PRINT_NULL) {
1163 arg->op.prio = 0;
1164 return;
1165 }
1166
1167 arg->op.prio = get_op_prio(arg->op.op);
1168 }
1169
1170 static enum event_type
1171 process_op(struct event *event, struct print_arg *arg, char **tok)
1172 {
1173 struct print_arg *left, *right = NULL;
1174 enum event_type type;
1175 char *token;
1176
1177 /* the op is passed in via tok */
1178 token = *tok;
1179
1180 if (arg->type == PRINT_OP && !arg->op.left) {
1181 /* handle single op */
1182 if (token[1]) {
1183 die("bad op token %s", token);
1184 return EVENT_ERROR;
1185 }
1186 switch (token[0]) {
1187 case '!':
1188 case '+':
1189 case '-':
1190 break;
1191 default:
1192 die("bad op token %s", token);
1193 return EVENT_ERROR;
1194 }
1195
1196 /* make an empty left */
1197 left = malloc_or_die(sizeof(*left));
1198 left->type = PRINT_NULL;
1199 arg->op.left = left;
1200
1201 right = malloc_or_die(sizeof(*right));
1202 arg->op.right = right;
1203
1204 type = process_arg(event, right, tok);
1205
1206 } else if (strcmp(token, "?") == 0) {
1207
1208 left = malloc_or_die(sizeof(*left));
1209 /* copy the top arg to the left */
1210 *left = *arg;
1211
1212 arg->type = PRINT_OP;
1213 arg->op.op = token;
1214 arg->op.left = left;
1215 arg->op.prio = 0;
1216
1217 type = process_cond(event, arg, tok);
1218
1219 } else if (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 strcmp(token, "<") == 0 ||
1231 strcmp(token, ">") == 0 ||
1232 strcmp(token, "==") == 0 ||
1233 strcmp(token, "!=") == 0) {
1234
1235 left = malloc_or_die(sizeof(*left));
1236
1237 /* copy the top arg to the left */
1238 *left = *arg;
1239
1240 arg->type = PRINT_OP;
1241 arg->op.op = token;
1242 arg->op.left = left;
1243
1244 set_op_prio(arg);
1245
1246 right = malloc_or_die(sizeof(*right));
1247
1248 type = read_token_item(&token);
1249 *tok = token;
1250
1251 /* could just be a type pointer */
1252 if ((strcmp(arg->op.op, "*") == 0) &&
1253 type == EVENT_DELIM && (strcmp(token, ")") == 0)) {
1254 if (left->type != PRINT_ATOM)
1255 die("bad pointer type");
1256 left->atom.atom = realloc(left->atom.atom,
1257 sizeof(left->atom.atom) + 3);
1258 strcat(left->atom.atom, " *");
1259 *arg = *left;
1260 free(arg);
1261
1262 return type;
1263 }
1264
1265 type = process_arg_token(event, right, tok, type);
1266
1267 arg->op.right = right;
1268
1269 } else if (strcmp(token, "[") == 0) {
1270
1271 left = malloc_or_die(sizeof(*left));
1272 *left = *arg;
1273
1274 arg->type = PRINT_OP;
1275 arg->op.op = token;
1276 arg->op.left = left;
1277
1278 arg->op.prio = 0;
1279 type = process_array(event, arg, tok);
1280
1281 } else {
1282 warning("unknown op '%s'", token);
1283 event->flags |= EVENT_FL_FAILED;
1284 /* the arg is now the left side */
1285 return EVENT_NONE;
1286 }
1287
1288 if (type == EVENT_OP) {
1289 int prio;
1290
1291 /* higher prios need to be closer to the root */
1292 prio = get_op_prio(*tok);
1293
1294 if (prio > arg->op.prio)
1295 return process_op(event, arg, tok);
1296
1297 return process_op(event, right, tok);
1298 }
1299
1300 return type;
1301 }
1302
1303 static enum event_type
1304 process_entry(struct event *event __unused, struct print_arg *arg,
1305 char **tok)
1306 {
1307 enum event_type type;
1308 char *field;
1309 char *token;
1310
1311 if (read_expected(EVENT_OP, "->") < 0)
1312 return EVENT_ERROR;
1313
1314 if (read_expect_type(EVENT_ITEM, &token) < 0)
1315 goto fail;
1316 field = token;
1317
1318 arg->type = PRINT_FIELD;
1319 arg->field.name = field;
1320
1321 if (is_flag_field) {
1322 arg->field.field = find_any_field(event, arg->field.name);
1323 arg->field.field->flags |= FIELD_IS_FLAG;
1324 is_flag_field = 0;
1325 } else if (is_symbolic_field) {
1326 arg->field.field = find_any_field(event, arg->field.name);
1327 arg->field.field->flags |= FIELD_IS_SYMBOLIC;
1328 is_symbolic_field = 0;
1329 }
1330
1331 type = read_token(&token);
1332 *tok = token;
1333
1334 return type;
1335
1336 fail:
1337 free_token(token);
1338 return EVENT_ERROR;
1339 }
1340
1341 static char *arg_eval (struct print_arg *arg);
1342
1343 static long long arg_num_eval(struct print_arg *arg)
1344 {
1345 long long left, right;
1346 long long val = 0;
1347
1348 switch (arg->type) {
1349 case PRINT_ATOM:
1350 val = strtoll(arg->atom.atom, NULL, 0);
1351 break;
1352 case PRINT_TYPE:
1353 val = arg_num_eval(arg->typecast.item);
1354 break;
1355 case PRINT_OP:
1356 switch (arg->op.op[0]) {
1357 case '|':
1358 left = arg_num_eval(arg->op.left);
1359 right = arg_num_eval(arg->op.right);
1360 if (arg->op.op[1])
1361 val = left || right;
1362 else
1363 val = left | right;
1364 break;
1365 case '&':
1366 left = arg_num_eval(arg->op.left);
1367 right = arg_num_eval(arg->op.right);
1368 if (arg->op.op[1])
1369 val = left && right;
1370 else
1371 val = left & right;
1372 break;
1373 case '<':
1374 left = arg_num_eval(arg->op.left);
1375 right = arg_num_eval(arg->op.right);
1376 switch (arg->op.op[1]) {
1377 case 0:
1378 val = left < right;
1379 break;
1380 case '<':
1381 val = left << right;
1382 break;
1383 case '=':
1384 val = left <= right;
1385 break;
1386 default:
1387 die("unknown op '%s'", arg->op.op);
1388 }
1389 break;
1390 case '>':
1391 left = arg_num_eval(arg->op.left);
1392 right = arg_num_eval(arg->op.right);
1393 switch (arg->op.op[1]) {
1394 case 0:
1395 val = left > right;
1396 break;
1397 case '>':
1398 val = left >> right;
1399 break;
1400 case '=':
1401 val = left >= right;
1402 break;
1403 default:
1404 die("unknown op '%s'", arg->op.op);
1405 }
1406 break;
1407 case '=':
1408 left = arg_num_eval(arg->op.left);
1409 right = arg_num_eval(arg->op.right);
1410
1411 if (arg->op.op[1] != '=')
1412 die("unknown op '%s'", arg->op.op);
1413
1414 val = left == right;
1415 break;
1416 case '!':
1417 left = arg_num_eval(arg->op.left);
1418 right = arg_num_eval(arg->op.right);
1419
1420 switch (arg->op.op[1]) {
1421 case '=':
1422 val = left != right;
1423 break;
1424 default:
1425 die("unknown op '%s'", arg->op.op);
1426 }
1427 break;
1428 default:
1429 die("unknown op '%s'", arg->op.op);
1430 }
1431 break;
1432
1433 case PRINT_NULL:
1434 case PRINT_FIELD ... PRINT_SYMBOL:
1435 case PRINT_STRING:
1436 default:
1437 die("invalid eval type %d", arg->type);
1438
1439 }
1440 return val;
1441 }
1442
1443 static char *arg_eval (struct print_arg *arg)
1444 {
1445 long long val;
1446 static char buf[20];
1447
1448 switch (arg->type) {
1449 case PRINT_ATOM:
1450 return arg->atom.atom;
1451 case PRINT_TYPE:
1452 return arg_eval(arg->typecast.item);
1453 case PRINT_OP:
1454 val = arg_num_eval(arg);
1455 sprintf(buf, "%lld", val);
1456 return buf;
1457
1458 case PRINT_NULL:
1459 case PRINT_FIELD ... PRINT_SYMBOL:
1460 case PRINT_STRING:
1461 default:
1462 die("invalid eval type %d", arg->type);
1463 break;
1464 }
1465
1466 return NULL;
1467 }
1468
1469 static enum event_type
1470 process_fields(struct event *event, struct print_flag_sym **list, char **tok)
1471 {
1472 enum event_type type;
1473 struct print_arg *arg = NULL;
1474 struct print_flag_sym *field;
1475 char *token = NULL;
1476 char *value;
1477
1478 do {
1479 free_token(token);
1480 type = read_token_item(&token);
1481 if (test_type_token(type, token, EVENT_OP, "{"))
1482 break;
1483
1484 arg = malloc_or_die(sizeof(*arg));
1485
1486 free_token(token);
1487 type = process_arg(event, arg, &token);
1488 if (test_type_token(type, token, EVENT_DELIM, ","))
1489 goto out_free;
1490
1491 field = malloc_or_die(sizeof(*field));
1492 memset(field, 0, sizeof(*field));
1493
1494 value = arg_eval(arg);
1495 field->value = strdup(value);
1496
1497 free_token(token);
1498 type = process_arg(event, arg, &token);
1499 if (test_type_token(type, token, EVENT_OP, "}"))
1500 goto out_free;
1501
1502 value = arg_eval(arg);
1503 field->str = strdup(value);
1504 free_arg(arg);
1505 arg = NULL;
1506
1507 *list = field;
1508 list = &field->next;
1509
1510 free_token(token);
1511 type = read_token_item(&token);
1512 } while (type == EVENT_DELIM && strcmp(token, ",") == 0);
1513
1514 *tok = token;
1515 return type;
1516
1517 out_free:
1518 free_arg(arg);
1519 free_token(token);
1520
1521 return EVENT_ERROR;
1522 }
1523
1524 static enum event_type
1525 process_flags(struct event *event, struct print_arg *arg, char **tok)
1526 {
1527 struct print_arg *field;
1528 enum event_type type;
1529 char *token;
1530
1531 memset(arg, 0, sizeof(*arg));
1532 arg->type = PRINT_FLAGS;
1533
1534 if (read_expected_item(EVENT_DELIM, "(") < 0)
1535 return EVENT_ERROR;
1536
1537 field = malloc_or_die(sizeof(*field));
1538
1539 type = process_arg(event, field, &token);
1540 if (test_type_token(type, token, EVENT_DELIM, ","))
1541 goto out_free;
1542
1543 arg->flags.field = field;
1544
1545 type = read_token_item(&token);
1546 if (event_item_type(type)) {
1547 arg->flags.delim = token;
1548 type = read_token_item(&token);
1549 }
1550
1551 if (test_type_token(type, token, EVENT_DELIM, ","))
1552 goto out_free;
1553
1554 type = process_fields(event, &arg->flags.flags, &token);
1555 if (test_type_token(type, token, EVENT_DELIM, ")"))
1556 goto out_free;
1557
1558 free_token(token);
1559 type = read_token_item(tok);
1560 return type;
1561
1562 out_free:
1563 free_token(token);
1564 return EVENT_ERROR;
1565 }
1566
1567 static enum event_type
1568 process_symbols(struct event *event, struct print_arg *arg, char **tok)
1569 {
1570 struct print_arg *field;
1571 enum event_type type;
1572 char *token;
1573
1574 memset(arg, 0, sizeof(*arg));
1575 arg->type = PRINT_SYMBOL;
1576
1577 if (read_expected_item(EVENT_DELIM, "(") < 0)
1578 return EVENT_ERROR;
1579
1580 field = malloc_or_die(sizeof(*field));
1581
1582 type = process_arg(event, field, &token);
1583 if (test_type_token(type, token, EVENT_DELIM, ","))
1584 goto out_free;
1585
1586 arg->symbol.field = field;
1587
1588 type = process_fields(event, &arg->symbol.symbols, &token);
1589 if (test_type_token(type, token, EVENT_DELIM, ")"))
1590 goto out_free;
1591
1592 free_token(token);
1593 type = read_token_item(tok);
1594 return type;
1595
1596 out_free:
1597 free_token(token);
1598 return EVENT_ERROR;
1599 }
1600
1601 static enum event_type
1602 process_paren(struct event *event, struct print_arg *arg, char **tok)
1603 {
1604 struct print_arg *item_arg;
1605 enum event_type type;
1606 char *token;
1607
1608 type = process_arg(event, arg, &token);
1609
1610 if (type == EVENT_ERROR)
1611 return EVENT_ERROR;
1612
1613 if (type == EVENT_OP)
1614 type = process_op(event, arg, &token);
1615
1616 if (type == EVENT_ERROR)
1617 return EVENT_ERROR;
1618
1619 if (test_type_token(type, token, EVENT_DELIM, ")")) {
1620 free_token(token);
1621 return EVENT_ERROR;
1622 }
1623
1624 free_token(token);
1625 type = read_token_item(&token);
1626
1627 /*
1628 * If the next token is an item or another open paren, then
1629 * this was a typecast.
1630 */
1631 if (event_item_type(type) ||
1632 (type == EVENT_DELIM && strcmp(token, "(") == 0)) {
1633
1634 /* make this a typecast and contine */
1635
1636 /* prevous must be an atom */
1637 if (arg->type != PRINT_ATOM)
1638 die("previous needed to be PRINT_ATOM");
1639
1640 item_arg = malloc_or_die(sizeof(*item_arg));
1641
1642 arg->type = PRINT_TYPE;
1643 arg->typecast.type = arg->atom.atom;
1644 arg->typecast.item = item_arg;
1645 type = process_arg_token(event, item_arg, &token, type);
1646
1647 }
1648
1649 *tok = token;
1650 return type;
1651 }
1652
1653
1654 static enum event_type
1655 process_str(struct event *event __unused, struct print_arg *arg, char **tok)
1656 {
1657 enum event_type type;
1658 char *token;
1659
1660 if (read_expected(EVENT_DELIM, "(") < 0)
1661 return EVENT_ERROR;
1662
1663 if (read_expect_type(EVENT_ITEM, &token) < 0)
1664 goto fail;
1665
1666 arg->type = PRINT_STRING;
1667 arg->string.string = token;
1668 arg->string.offset = -1;
1669
1670 if (read_expected(EVENT_DELIM, ")") < 0)
1671 return EVENT_ERROR;
1672
1673 type = read_token(&token);
1674 *tok = token;
1675
1676 return type;
1677 fail:
1678 free_token(token);
1679 return EVENT_ERROR;
1680 }
1681
1682 enum event_type
1683 process_arg_token(struct event *event, struct print_arg *arg,
1684 char **tok, enum event_type type)
1685 {
1686 char *token;
1687 char *atom;
1688
1689 token = *tok;
1690
1691 switch (type) {
1692 case EVENT_ITEM:
1693 if (strcmp(token, "REC") == 0) {
1694 free_token(token);
1695 type = process_entry(event, arg, &token);
1696 } else if (strcmp(token, "__print_flags") == 0) {
1697 free_token(token);
1698 is_flag_field = 1;
1699 type = process_flags(event, arg, &token);
1700 } else if (strcmp(token, "__print_symbolic") == 0) {
1701 free_token(token);
1702 is_symbolic_field = 1;
1703 type = process_symbols(event, arg, &token);
1704 } else if (strcmp(token, "__get_str") == 0) {
1705 free_token(token);
1706 type = process_str(event, arg, &token);
1707 } else {
1708 atom = token;
1709 /* test the next token */
1710 type = read_token_item(&token);
1711
1712 /* atoms can be more than one token long */
1713 while (type == EVENT_ITEM) {
1714 atom = realloc(atom, strlen(atom) + strlen(token) + 2);
1715 strcat(atom, " ");
1716 strcat(atom, token);
1717 free_token(token);
1718 type = read_token_item(&token);
1719 }
1720
1721 /* todo, test for function */
1722
1723 arg->type = PRINT_ATOM;
1724 arg->atom.atom = atom;
1725 }
1726 break;
1727 case EVENT_DQUOTE:
1728 case EVENT_SQUOTE:
1729 arg->type = PRINT_ATOM;
1730 arg->atom.atom = token;
1731 type = read_token_item(&token);
1732 break;
1733 case EVENT_DELIM:
1734 if (strcmp(token, "(") == 0) {
1735 free_token(token);
1736 type = process_paren(event, arg, &token);
1737 break;
1738 }
1739 case EVENT_OP:
1740 /* handle single ops */
1741 arg->type = PRINT_OP;
1742 arg->op.op = token;
1743 arg->op.left = NULL;
1744 type = process_op(event, arg, &token);
1745
1746 break;
1747
1748 case EVENT_ERROR ... EVENT_NEWLINE:
1749 default:
1750 die("unexpected type %d", type);
1751 }
1752 *tok = token;
1753
1754 return type;
1755 }
1756
1757 static int event_read_print_args(struct event *event, struct print_arg **list)
1758 {
1759 enum event_type type = EVENT_ERROR;
1760 struct print_arg *arg;
1761 char *token;
1762 int args = 0;
1763
1764 do {
1765 if (type == EVENT_NEWLINE) {
1766 free_token(token);
1767 type = read_token_item(&token);
1768 continue;
1769 }
1770
1771 arg = malloc_or_die(sizeof(*arg));
1772 memset(arg, 0, sizeof(*arg));
1773
1774 type = process_arg(event, arg, &token);
1775
1776 if (type == EVENT_ERROR) {
1777 free_arg(arg);
1778 return -1;
1779 }
1780
1781 *list = arg;
1782 args++;
1783
1784 if (type == EVENT_OP) {
1785 type = process_op(event, arg, &token);
1786 list = &arg->next;
1787 continue;
1788 }
1789
1790 if (type == EVENT_DELIM && strcmp(token, ",") == 0) {
1791 free_token(token);
1792 *list = arg;
1793 list = &arg->next;
1794 continue;
1795 }
1796 break;
1797 } while (type != EVENT_NONE);
1798
1799 if (type != EVENT_NONE)
1800 free_token(token);
1801
1802 return args;
1803 }
1804
1805 static int event_read_print(struct event *event)
1806 {
1807 enum event_type type;
1808 char *token;
1809 int ret;
1810
1811 if (read_expected_item(EVENT_ITEM, "print") < 0)
1812 return -1;
1813
1814 if (read_expected(EVENT_ITEM, "fmt") < 0)
1815 return -1;
1816
1817 if (read_expected(EVENT_OP, ":") < 0)
1818 return -1;
1819
1820 if (read_expect_type(EVENT_DQUOTE, &token) < 0)
1821 goto fail;
1822
1823 concat:
1824 event->print_fmt.format = token;
1825 event->print_fmt.args = NULL;
1826
1827 /* ok to have no arg */
1828 type = read_token_item(&token);
1829
1830 if (type == EVENT_NONE)
1831 return 0;
1832
1833 /* Handle concatination of print lines */
1834 if (type == EVENT_DQUOTE) {
1835 char *cat;
1836
1837 cat = malloc_or_die(strlen(event->print_fmt.format) +
1838 strlen(token) + 1);
1839 strcpy(cat, event->print_fmt.format);
1840 strcat(cat, token);
1841 free_token(token);
1842 free_token(event->print_fmt.format);
1843 event->print_fmt.format = NULL;
1844 token = cat;
1845 goto concat;
1846 }
1847
1848 if (test_type_token(type, token, EVENT_DELIM, ","))
1849 goto fail;
1850
1851 free_token(token);
1852
1853 ret = event_read_print_args(event, &event->print_fmt.args);
1854 if (ret < 0)
1855 return -1;
1856
1857 return ret;
1858
1859 fail:
1860 free_token(token);
1861 return -1;
1862 }
1863
1864 static struct format_field *
1865 find_common_field(struct event *event, const char *name)
1866 {
1867 struct format_field *format;
1868
1869 for (format = event->format.common_fields;
1870 format; format = format->next) {
1871 if (strcmp(format->name, name) == 0)
1872 break;
1873 }
1874
1875 return format;
1876 }
1877
1878 static struct format_field *
1879 find_field(struct event *event, const char *name)
1880 {
1881 struct format_field *format;
1882
1883 for (format = event->format.fields;
1884 format; format = format->next) {
1885 if (strcmp(format->name, name) == 0)
1886 break;
1887 }
1888
1889 return format;
1890 }
1891
1892 static struct format_field *
1893 find_any_field(struct event *event, const char *name)
1894 {
1895 struct format_field *format;
1896
1897 format = find_common_field(event, name);
1898 if (format)
1899 return format;
1900 return find_field(event, name);
1901 }
1902
1903 unsigned long long read_size(void *ptr, int size)
1904 {
1905 switch (size) {
1906 case 1:
1907 return *(unsigned char *)ptr;
1908 case 2:
1909 return data2host2(ptr);
1910 case 4:
1911 return data2host4(ptr);
1912 case 8:
1913 return data2host8(ptr);
1914 default:
1915 /* BUG! */
1916 return 0;
1917 }
1918 }
1919
1920 unsigned long long
1921 raw_field_value(struct event *event, const char *name, void *data)
1922 {
1923 struct format_field *field;
1924
1925 field = find_any_field(event, name);
1926 if (!field)
1927 return 0ULL;
1928
1929 return read_size(data + field->offset, field->size);
1930 }
1931
1932 void *raw_field_ptr(struct event *event, const char *name, void *data)
1933 {
1934 struct format_field *field;
1935
1936 field = find_any_field(event, name);
1937 if (!field)
1938 return NULL;
1939
1940 if (field->flags & FIELD_IS_DYNAMIC) {
1941 int offset;
1942
1943 offset = *(int *)(data + field->offset);
1944 offset &= 0xffff;
1945
1946 return data + offset;
1947 }
1948
1949 return data + field->offset;
1950 }
1951
1952 static int get_common_info(const char *type, int *offset, int *size)
1953 {
1954 struct event *event;
1955 struct format_field *field;
1956
1957 /*
1958 * All events should have the same common elements.
1959 * Pick any event to find where the type is;
1960 */
1961 if (!event_list)
1962 die("no event_list!");
1963
1964 event = event_list;
1965 field = find_common_field(event, type);
1966 if (!field)
1967 die("field '%s' not found", type);
1968
1969 *offset = field->offset;
1970 *size = field->size;
1971
1972 return 0;
1973 }
1974
1975 static int __parse_common(void *data, int *size, int *offset,
1976 const char *name)
1977 {
1978 int ret;
1979
1980 if (!*size) {
1981 ret = get_common_info(name, offset, size);
1982 if (ret < 0)
1983 return ret;
1984 }
1985 return read_size(data + *offset, *size);
1986 }
1987
1988 int trace_parse_common_type(void *data)
1989 {
1990 static int type_offset;
1991 static int type_size;
1992
1993 return __parse_common(data, &type_size, &type_offset,
1994 "common_type");
1995 }
1996
1997 int trace_parse_common_pid(void *data)
1998 {
1999 static int pid_offset;
2000 static int pid_size;
2001
2002 return __parse_common(data, &pid_size, &pid_offset,
2003 "common_pid");
2004 }
2005
2006 int parse_common_pc(void *data)
2007 {
2008 static int pc_offset;
2009 static int pc_size;
2010
2011 return __parse_common(data, &pc_size, &pc_offset,
2012 "common_preempt_count");
2013 }
2014
2015 int parse_common_flags(void *data)
2016 {
2017 static int flags_offset;
2018 static int flags_size;
2019
2020 return __parse_common(data, &flags_size, &flags_offset,
2021 "common_flags");
2022 }
2023
2024 int parse_common_lock_depth(void *data)
2025 {
2026 static int ld_offset;
2027 static int ld_size;
2028 int ret;
2029
2030 ret = __parse_common(data, &ld_size, &ld_offset,
2031 "common_lock_depth");
2032 if (ret < 0)
2033 return -1;
2034
2035 return ret;
2036 }
2037
2038 struct event *trace_find_event(int id)
2039 {
2040 struct event *event;
2041
2042 for (event = event_list; event; event = event->next) {
2043 if (event->id == id)
2044 break;
2045 }
2046 return event;
2047 }
2048
2049 struct event *trace_find_next_event(struct event *event)
2050 {
2051 if (!event)
2052 return event_list;
2053
2054 return event->next;
2055 }
2056
2057 static unsigned long long eval_num_arg(void *data, int size,
2058 struct event *event, struct print_arg *arg)
2059 {
2060 unsigned long long val = 0;
2061 unsigned long long left, right;
2062 struct print_arg *larg;
2063
2064 switch (arg->type) {
2065 case PRINT_NULL:
2066 /* ?? */
2067 return 0;
2068 case PRINT_ATOM:
2069 return strtoull(arg->atom.atom, NULL, 0);
2070 case PRINT_FIELD:
2071 if (!arg->field.field) {
2072 arg->field.field = find_any_field(event, arg->field.name);
2073 if (!arg->field.field)
2074 die("field %s not found", arg->field.name);
2075 }
2076 /* must be a number */
2077 val = read_size(data + arg->field.field->offset,
2078 arg->field.field->size);
2079 break;
2080 case PRINT_FLAGS:
2081 case PRINT_SYMBOL:
2082 break;
2083 case PRINT_TYPE:
2084 return eval_num_arg(data, size, event, arg->typecast.item);
2085 case PRINT_STRING:
2086 return 0;
2087 break;
2088 case PRINT_OP:
2089 if (strcmp(arg->op.op, "[") == 0) {
2090 /*
2091 * Arrays are special, since we don't want
2092 * to read the arg as is.
2093 */
2094 if (arg->op.left->type != PRINT_FIELD)
2095 goto default_op; /* oops, all bets off */
2096 larg = arg->op.left;
2097 if (!larg->field.field) {
2098 larg->field.field =
2099 find_any_field(event, larg->field.name);
2100 if (!larg->field.field)
2101 die("field %s not found", larg->field.name);
2102 }
2103 right = eval_num_arg(data, size, event, arg->op.right);
2104 val = read_size(data + larg->field.field->offset +
2105 right * long_size, long_size);
2106 break;
2107 }
2108 default_op:
2109 left = eval_num_arg(data, size, event, arg->op.left);
2110 right = eval_num_arg(data, size, event, arg->op.right);
2111 switch (arg->op.op[0]) {
2112 case '|':
2113 if (arg->op.op[1])
2114 val = left || right;
2115 else
2116 val = left | right;
2117 break;
2118 case '&':
2119 if (arg->op.op[1])
2120 val = left && right;
2121 else
2122 val = left & right;
2123 break;
2124 case '<':
2125 switch (arg->op.op[1]) {
2126 case 0:
2127 val = left < right;
2128 break;
2129 case '<':
2130 val = left << right;
2131 break;
2132 case '=':
2133 val = left <= right;
2134 break;
2135 default:
2136 die("unknown op '%s'", arg->op.op);
2137 }
2138 break;
2139 case '>':
2140 switch (arg->op.op[1]) {
2141 case 0:
2142 val = left > right;
2143 break;
2144 case '>':
2145 val = left >> right;
2146 break;
2147 case '=':
2148 val = left >= right;
2149 break;
2150 default:
2151 die("unknown op '%s'", arg->op.op);
2152 }
2153 break;
2154 case '=':
2155 if (arg->op.op[1] != '=')
2156 die("unknown op '%s'", arg->op.op);
2157 val = left == right;
2158 break;
2159 case '-':
2160 val = left - right;
2161 break;
2162 case '+':
2163 val = left + right;
2164 break;
2165 default:
2166 die("unknown op '%s'", arg->op.op);
2167 }
2168 break;
2169 default: /* not sure what to do there */
2170 return 0;
2171 }
2172 return val;
2173 }
2174
2175 struct flag {
2176 const char *name;
2177 unsigned long long value;
2178 };
2179
2180 static const struct flag flags[] = {
2181 { "HI_SOFTIRQ", 0 },
2182 { "TIMER_SOFTIRQ", 1 },
2183 { "NET_TX_SOFTIRQ", 2 },
2184 { "NET_RX_SOFTIRQ", 3 },
2185 { "BLOCK_SOFTIRQ", 4 },
2186 { "BLOCK_IOPOLL_SOFTIRQ", 5 },
2187 { "TASKLET_SOFTIRQ", 6 },
2188 { "SCHED_SOFTIRQ", 7 },
2189 { "HRTIMER_SOFTIRQ", 8 },
2190 { "RCU_SOFTIRQ", 9 },
2191
2192 { "HRTIMER_NORESTART", 0 },
2193 { "HRTIMER_RESTART", 1 },
2194 };
2195
2196 unsigned long long eval_flag(const char *flag)
2197 {
2198 int i;
2199
2200 /*
2201 * Some flags in the format files do not get converted.
2202 * If the flag is not numeric, see if it is something that
2203 * we already know about.
2204 */
2205 if (isdigit(flag[0]))
2206 return strtoull(flag, NULL, 0);
2207
2208 for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
2209 if (strcmp(flags[i].name, flag) == 0)
2210 return flags[i].value;
2211
2212 return 0;
2213 }
2214
2215 static void print_str_arg(void *data, int size,
2216 struct event *event, struct print_arg *arg)
2217 {
2218 struct print_flag_sym *flag;
2219 unsigned long long val, fval;
2220 char *str;
2221 int print;
2222
2223 switch (arg->type) {
2224 case PRINT_NULL:
2225 /* ?? */
2226 return;
2227 case PRINT_ATOM:
2228 printf("%s", arg->atom.atom);
2229 return;
2230 case PRINT_FIELD:
2231 if (!arg->field.field) {
2232 arg->field.field = find_any_field(event, arg->field.name);
2233 if (!arg->field.field)
2234 die("field %s not found", arg->field.name);
2235 }
2236 str = malloc_or_die(arg->field.field->size + 1);
2237 memcpy(str, data + arg->field.field->offset,
2238 arg->field.field->size);
2239 str[arg->field.field->size] = 0;
2240 printf("%s", str);
2241 free(str);
2242 break;
2243 case PRINT_FLAGS:
2244 val = eval_num_arg(data, size, event, arg->flags.field);
2245 print = 0;
2246 for (flag = arg->flags.flags; flag; flag = flag->next) {
2247 fval = eval_flag(flag->value);
2248 if (!val && !fval) {
2249 printf("%s", flag->str);
2250 break;
2251 }
2252 if (fval && (val & fval) == fval) {
2253 if (print && arg->flags.delim)
2254 printf("%s", arg->flags.delim);
2255 printf("%s", flag->str);
2256 print = 1;
2257 val &= ~fval;
2258 }
2259 }
2260 break;
2261 case PRINT_SYMBOL:
2262 val = eval_num_arg(data, size, event, arg->symbol.field);
2263 for (flag = arg->symbol.symbols; flag; flag = flag->next) {
2264 fval = eval_flag(flag->value);
2265 if (val == fval) {
2266 printf("%s", flag->str);
2267 break;
2268 }
2269 }
2270 break;
2271
2272 case PRINT_TYPE:
2273 break;
2274 case PRINT_STRING: {
2275 int str_offset;
2276
2277 if (arg->string.offset == -1) {
2278 struct format_field *f;
2279
2280 f = find_any_field(event, arg->string.string);
2281 arg->string.offset = f->offset;
2282 }
2283 str_offset = *(int *)(data + arg->string.offset);
2284 str_offset &= 0xffff;
2285 printf("%s", ((char *)data) + str_offset);
2286 break;
2287 }
2288 case PRINT_OP:
2289 /*
2290 * The only op for string should be ? :
2291 */
2292 if (arg->op.op[0] != '?')
2293 return;
2294 val = eval_num_arg(data, size, event, arg->op.left);
2295 if (val)
2296 print_str_arg(data, size, event, arg->op.right->op.left);
2297 else
2298 print_str_arg(data, size, event, arg->op.right->op.right);
2299 break;
2300 default:
2301 /* well... */
2302 break;
2303 }
2304 }
2305
2306 static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event *event)
2307 {
2308 static struct format_field *field, *ip_field;
2309 struct print_arg *args, *arg, **next;
2310 unsigned long long ip, val;
2311 char *ptr;
2312 void *bptr;
2313
2314 if (!field) {
2315 field = find_field(event, "buf");
2316 if (!field)
2317 die("can't find buffer field for binary printk");
2318 ip_field = find_field(event, "ip");
2319 if (!ip_field)
2320 die("can't find ip field for binary printk");
2321 }
2322
2323 ip = read_size(data + ip_field->offset, ip_field->size);
2324
2325 /*
2326 * The first arg is the IP pointer.
2327 */
2328 args = malloc_or_die(sizeof(*args));
2329 arg = args;
2330 arg->next = NULL;
2331 next = &arg->next;
2332
2333 arg->type = PRINT_ATOM;
2334 arg->atom.atom = malloc_or_die(32);
2335 sprintf(arg->atom.atom, "%lld", ip);
2336
2337 /* skip the first "%pf : " */
2338 for (ptr = fmt + 6, bptr = data + field->offset;
2339 bptr < data + size && *ptr; ptr++) {
2340 int ls = 0;
2341
2342 if (*ptr == '%') {
2343 process_again:
2344 ptr++;
2345 switch (*ptr) {
2346 case '%':
2347 break;
2348 case 'l':
2349 ls++;
2350 goto process_again;
2351 case 'L':
2352 ls = 2;
2353 goto process_again;
2354 case '0' ... '9':
2355 goto process_again;
2356 case 'p':
2357 ls = 1;
2358 /* fall through */
2359 case 'd':
2360 case 'u':
2361 case 'x':
2362 case 'i':
2363 /* the pointers are always 4 bytes aligned */
2364 bptr = (void *)(((unsigned long)bptr + 3) &
2365 ~3);
2366 switch (ls) {
2367 case 0:
2368 case 1:
2369 ls = long_size;
2370 break;
2371 case 2:
2372 ls = 8;
2373 default:
2374 break;
2375 }
2376 val = read_size(bptr, ls);
2377 bptr += ls;
2378 arg = malloc_or_die(sizeof(*arg));
2379 arg->next = NULL;
2380 arg->type = PRINT_ATOM;
2381 arg->atom.atom = malloc_or_die(32);
2382 sprintf(arg->atom.atom, "%lld", val);
2383 *next = arg;
2384 next = &arg->next;
2385 break;
2386 case 's':
2387 arg = malloc_or_die(sizeof(*arg));
2388 arg->next = NULL;
2389 arg->type = PRINT_STRING;
2390 arg->string.string = strdup(bptr);
2391 bptr += strlen(bptr) + 1;
2392 *next = arg;
2393 next = &arg->next;
2394 default:
2395 break;
2396 }
2397 }
2398 }
2399
2400 return args;
2401 }
2402
2403 static void free_args(struct print_arg *args)
2404 {
2405 struct print_arg *next;
2406
2407 while (args) {
2408 next = args->next;
2409
2410 if (args->type == PRINT_ATOM)
2411 free(args->atom.atom);
2412 else
2413 free(args->string.string);
2414 free(args);
2415 args = next;
2416 }
2417 }
2418
2419 static char *get_bprint_format(void *data, int size __unused, struct event *event)
2420 {
2421 unsigned long long addr;
2422 static struct format_field *field;
2423 struct printk_map *printk;
2424 char *format;
2425 char *p;
2426
2427 if (!field) {
2428 field = find_field(event, "fmt");
2429 if (!field)
2430 die("can't find format field for binary printk");
2431 printf("field->offset = %d size=%d\n", field->offset, field->size);
2432 }
2433
2434 addr = read_size(data + field->offset, field->size);
2435
2436 printk = find_printk(addr);
2437 if (!printk) {
2438 format = malloc_or_die(45);
2439 sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n",
2440 addr);
2441 return format;
2442 }
2443
2444 p = printk->printk;
2445 /* Remove any quotes. */
2446 if (*p == '"')
2447 p++;
2448 format = malloc_or_die(strlen(p) + 10);
2449 sprintf(format, "%s : %s", "%pf", p);
2450 /* remove ending quotes and new line since we will add one too */
2451 p = format + strlen(format) - 1;
2452 if (*p == '"')
2453 *p = 0;
2454
2455 p -= 2;
2456 if (strcmp(p, "\\n") == 0)
2457 *p = 0;
2458
2459 return format;
2460 }
2461
2462 static void pretty_print(void *data, int size, struct event *event)
2463 {
2464 struct print_fmt *print_fmt = &event->print_fmt;
2465 struct print_arg *arg = print_fmt->args;
2466 struct print_arg *args = NULL;
2467 const char *ptr = print_fmt->format;
2468 unsigned long long val;
2469 struct func_map *func;
2470 const char *saveptr;
2471 char *bprint_fmt = NULL;
2472 char format[32];
2473 int show_func;
2474 int len;
2475 int ls;
2476
2477 if (event->flags & EVENT_FL_ISFUNC)
2478 ptr = " %pF <-- %pF";
2479
2480 if (event->flags & EVENT_FL_ISBPRINT) {
2481 bprint_fmt = get_bprint_format(data, size, event);
2482 args = make_bprint_args(bprint_fmt, data, size, event);
2483 arg = args;
2484 ptr = bprint_fmt;
2485 }
2486
2487 for (; *ptr; ptr++) {
2488 ls = 0;
2489 if (*ptr == '\\') {
2490 ptr++;
2491 switch (*ptr) {
2492 case 'n':
2493 printf("\n");
2494 break;
2495 case 't':
2496 printf("\t");
2497 break;
2498 case 'r':
2499 printf("\r");
2500 break;
2501 case '\\':
2502 printf("\\");
2503 break;
2504 default:
2505 printf("%c", *ptr);
2506 break;
2507 }
2508
2509 } else if (*ptr == '%') {
2510 saveptr = ptr;
2511 show_func = 0;
2512 cont_process:
2513 ptr++;
2514 switch (*ptr) {
2515 case '%':
2516 printf("%%");
2517 break;
2518 case 'l':
2519 ls++;
2520 goto cont_process;
2521 case 'L':
2522 ls = 2;
2523 goto cont_process;
2524 case 'z':
2525 case 'Z':
2526 case '0' ... '9':
2527 goto cont_process;
2528 case 'p':
2529 if (long_size == 4)
2530 ls = 1;
2531 else
2532 ls = 2;
2533
2534 if (*(ptr+1) == 'F' ||
2535 *(ptr+1) == 'f') {
2536 ptr++;
2537 show_func = *ptr;
2538 }
2539
2540 /* fall through */
2541 case 'd':
2542 case 'i':
2543 case 'x':
2544 case 'X':
2545 case 'u':
2546 if (!arg)
2547 die("no argument match");
2548
2549 len = ((unsigned long)ptr + 1) -
2550 (unsigned long)saveptr;
2551
2552 /* should never happen */
2553 if (len > 32)
2554 die("bad format!");
2555
2556 memcpy(format, saveptr, len);
2557 format[len] = 0;
2558
2559 val = eval_num_arg(data, size, event, arg);
2560 arg = arg->next;
2561
2562 if (show_func) {
2563 func = find_func(val);
2564 if (func) {
2565 printf("%s", func->func);
2566 if (show_func == 'F')
2567 printf("+0x%llx",
2568 val - func->addr);
2569 break;
2570 }
2571 }
2572 switch (ls) {
2573 case 0:
2574 printf(format, (int)val);
2575 break;
2576 case 1:
2577 printf(format, (long)val);
2578 break;
2579 case 2:
2580 printf(format, (long long)val);
2581 break;
2582 default:
2583 die("bad count (%d)", ls);
2584 }
2585 break;
2586 case 's':
2587 if (!arg)
2588 die("no matching argument");
2589
2590 print_str_arg(data, size, event, arg);
2591 arg = arg->next;
2592 break;
2593 default:
2594 printf(">%c<", *ptr);
2595
2596 }
2597 } else
2598 printf("%c", *ptr);
2599 }
2600
2601 if (args) {
2602 free_args(args);
2603 free(bprint_fmt);
2604 }
2605 }
2606
2607 static inline int log10_cpu(int nb)
2608 {
2609 if (nb / 100)
2610 return 3;
2611 if (nb / 10)
2612 return 2;
2613 return 1;
2614 }
2615
2616 static void print_lat_fmt(void *data, int size __unused)
2617 {
2618 unsigned int lat_flags;
2619 unsigned int pc;
2620 int lock_depth;
2621 int hardirq;
2622 int softirq;
2623
2624 lat_flags = parse_common_flags(data);
2625 pc = parse_common_pc(data);
2626 lock_depth = parse_common_lock_depth(data);
2627
2628 hardirq = lat_flags & TRACE_FLAG_HARDIRQ;
2629 softirq = lat_flags & TRACE_FLAG_SOFTIRQ;
2630
2631 printf("%c%c%c",
2632 (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
2633 (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ?
2634 'X' : '.',
2635 (lat_flags & TRACE_FLAG_NEED_RESCHED) ?
2636 'N' : '.',
2637 (hardirq && softirq) ? 'H' :
2638 hardirq ? 'h' : softirq ? 's' : '.');
2639
2640 if (pc)
2641 printf("%x", pc);
2642 else
2643 printf(".");
2644
2645 if (lock_depth < 0)
2646 printf(".");
2647 else
2648 printf("%d", lock_depth);
2649 }
2650
2651 /* taken from Linux, written by Frederic Weisbecker */
2652 static void print_graph_cpu(int cpu)
2653 {
2654 int i;
2655 int log10_this = log10_cpu(cpu);
2656 int log10_all = log10_cpu(cpus);
2657
2658
2659 /*
2660 * Start with a space character - to make it stand out
2661 * to the right a bit when trace output is pasted into
2662 * email:
2663 */
2664 printf(" ");
2665
2666 /*
2667 * Tricky - we space the CPU field according to the max
2668 * number of online CPUs. On a 2-cpu system it would take
2669 * a maximum of 1 digit - on a 128 cpu system it would
2670 * take up to 3 digits:
2671 */
2672 for (i = 0; i < log10_all - log10_this; i++)
2673 printf(" ");
2674
2675 printf("%d) ", cpu);
2676 }
2677
2678 #define TRACE_GRAPH_PROCINFO_LENGTH 14
2679 #define TRACE_GRAPH_INDENT 2
2680
2681 static void print_graph_proc(int pid, const char *comm)
2682 {
2683 /* sign + log10(MAX_INT) + '\0' */
2684 char pid_str[11];
2685 int spaces = 0;
2686 int len;
2687 int i;
2688
2689 sprintf(pid_str, "%d", pid);
2690
2691 /* 1 stands for the "-" character */
2692 len = strlen(comm) + strlen(pid_str) + 1;
2693
2694 if (len < TRACE_GRAPH_PROCINFO_LENGTH)
2695 spaces = TRACE_GRAPH_PROCINFO_LENGTH - len;
2696
2697 /* First spaces to align center */
2698 for (i = 0; i < spaces / 2; i++)
2699 printf(" ");
2700
2701 printf("%s-%s", comm, pid_str);
2702
2703 /* Last spaces to align center */
2704 for (i = 0; i < spaces - (spaces / 2); i++)
2705 printf(" ");
2706 }
2707
2708 static struct record *
2709 get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func,
2710 struct record *next)
2711 {
2712 struct format_field *field;
2713 struct event *event;
2714 unsigned long val;
2715 int type;
2716 int pid;
2717
2718 type = trace_parse_common_type(next->data);
2719 event = trace_find_event(type);
2720 if (!event)
2721 return NULL;
2722
2723 if (!(event->flags & EVENT_FL_ISFUNCRET))
2724 return NULL;
2725
2726 pid = trace_parse_common_pid(next->data);
2727 field = find_field(event, "func");
2728 if (!field)
2729 die("function return does not have field func");
2730
2731 val = read_size(next->data + field->offset, field->size);
2732
2733 if (cur_pid != pid || cur_func != val)
2734 return NULL;
2735
2736 /* this is a leaf, now advance the iterator */
2737 return trace_read_data(cpu);
2738 }
2739
2740 /* Signal a overhead of time execution to the output */
2741 static void print_graph_overhead(unsigned long long duration)
2742 {
2743 /* Non nested entry or return */
2744 if (duration == ~0ULL)
2745 return (void)printf(" ");
2746
2747 /* Duration exceeded 100 msecs */
2748 if (duration > 100000ULL)
2749 return (void)printf("! ");
2750
2751 /* Duration exceeded 10 msecs */
2752 if (duration > 10000ULL)
2753 return (void)printf("+ ");
2754
2755 printf(" ");
2756 }
2757
2758 static void print_graph_duration(unsigned long long duration)
2759 {
2760 unsigned long usecs = duration / 1000;
2761 unsigned long nsecs_rem = duration % 1000;
2762 /* log10(ULONG_MAX) + '\0' */
2763 char msecs_str[21];
2764 char nsecs_str[5];
2765 int len;
2766 int i;
2767
2768 sprintf(msecs_str, "%lu", usecs);
2769
2770 /* Print msecs */
2771 len = printf("%lu", usecs);
2772
2773 /* Print nsecs (we don't want to exceed 7 numbers) */
2774 if (len < 7) {
2775 snprintf(nsecs_str, 8 - len, "%03lu", nsecs_rem);
2776 len += printf(".%s", nsecs_str);
2777 }
2778
2779 printf(" us ");
2780
2781 /* Print remaining spaces to fit the row's width */
2782 for (i = len; i < 7; i++)
2783 printf(" ");
2784
2785 printf("| ");
2786 }
2787
2788 static void
2789 print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec)
2790 {
2791 unsigned long long rettime, calltime;
2792 unsigned long long duration, depth;
2793 unsigned long long val;
2794 struct format_field *field;
2795 struct func_map *func;
2796 struct event *ret_event;
2797 int type;
2798 int i;
2799
2800 type = trace_parse_common_type(ret_rec->data);
2801 ret_event = trace_find_event(type);
2802
2803 field = find_field(ret_event, "rettime");
2804 if (!field)
2805 die("can't find rettime in return graph");
2806 rettime = read_size(ret_rec->data + field->offset, field->size);
2807
2808 field = find_field(ret_event, "calltime");
2809 if (!field)
2810 die("can't find rettime in return graph");
2811 calltime = read_size(ret_rec->data + field->offset, field->size);
2812
2813 duration = rettime - calltime;
2814
2815 /* Overhead */
2816 print_graph_overhead(duration);
2817
2818 /* Duration */
2819 print_graph_duration(duration);
2820
2821 field = find_field(event, "depth");
2822 if (!field)
2823 die("can't find depth in entry graph");
2824 depth = read_size(data + field->offset, field->size);
2825
2826 /* Function */
2827 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2828 printf(" ");
2829
2830 field = find_field(event, "func");
2831 if (!field)
2832 die("can't find func in entry graph");
2833 val = read_size(data + field->offset, field->size);
2834 func = find_func(val);
2835
2836 if (func)
2837 printf("%s();", func->func);
2838 else
2839 printf("%llx();", val);
2840 }
2841
2842 static void print_graph_nested(struct event *event, void *data)
2843 {
2844 struct format_field *field;
2845 unsigned long long depth;
2846 unsigned long long val;
2847 struct func_map *func;
2848 int i;
2849
2850 /* No overhead */
2851 print_graph_overhead(-1);
2852
2853 /* No time */
2854 printf(" | ");
2855
2856 field = find_field(event, "depth");
2857 if (!field)
2858 die("can't find depth in entry graph");
2859 depth = read_size(data + field->offset, field->size);
2860
2861 /* Function */
2862 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2863 printf(" ");
2864
2865 field = find_field(event, "func");
2866 if (!field)
2867 die("can't find func in entry graph");
2868 val = read_size(data + field->offset, field->size);
2869 func = find_func(val);
2870
2871 if (func)
2872 printf("%s() {", func->func);
2873 else
2874 printf("%llx() {", val);
2875 }
2876
2877 static void
2878 pretty_print_func_ent(void *data, int size, struct event *event,
2879 int cpu, int pid, const char *comm,
2880 unsigned long secs, unsigned long usecs)
2881 {
2882 struct format_field *field;
2883 struct record *rec;
2884 void *copy_data;
2885 unsigned long val;
2886
2887 printf("%5lu.%06lu | ", secs, usecs);
2888
2889 print_graph_cpu(cpu);
2890 print_graph_proc(pid, comm);
2891
2892 printf(" | ");
2893
2894 if (latency_format) {
2895 print_lat_fmt(data, size);
2896 printf(" | ");
2897 }
2898
2899 field = find_field(event, "func");
2900 if (!field)
2901 die("function entry does not have func field");
2902
2903 val = read_size(data + field->offset, field->size);
2904
2905 /*
2906 * peek_data may unmap the data pointer. Copy it first.
2907 */
2908 copy_data = malloc_or_die(size);
2909 memcpy(copy_data, data, size);
2910 data = copy_data;
2911
2912 rec = trace_peek_data(cpu);
2913 if (rec) {
2914 rec = get_return_for_leaf(cpu, pid, val, rec);
2915 if (rec) {
2916 print_graph_entry_leaf(event, data, rec);
2917 goto out_free;
2918 }
2919 }
2920 print_graph_nested(event, data);
2921 out_free:
2922 free(data);
2923 }
2924
2925 static void
2926 pretty_print_func_ret(void *data, int size __unused, struct event *event,
2927 int cpu, int pid, const char *comm,
2928 unsigned long secs, unsigned long usecs)
2929 {
2930 unsigned long long rettime, calltime;
2931 unsigned long long duration, depth;
2932 struct format_field *field;
2933 int i;
2934
2935 printf("%5lu.%06lu | ", secs, usecs);
2936
2937 print_graph_cpu(cpu);
2938 print_graph_proc(pid, comm);
2939
2940 printf(" | ");
2941
2942 if (latency_format) {
2943 print_lat_fmt(data, size);
2944 printf(" | ");
2945 }
2946
2947 field = find_field(event, "rettime");
2948 if (!field)
2949 die("can't find rettime in return graph");
2950 rettime = read_size(data + field->offset, field->size);
2951
2952 field = find_field(event, "calltime");
2953 if (!field)
2954 die("can't find calltime in return graph");
2955 calltime = read_size(data + field->offset, field->size);
2956
2957 duration = rettime - calltime;
2958
2959 /* Overhead */
2960 print_graph_overhead(duration);
2961
2962 /* Duration */
2963 print_graph_duration(duration);
2964
2965 field = find_field(event, "depth");
2966 if (!field)
2967 die("can't find depth in entry graph");
2968 depth = read_size(data + field->offset, field->size);
2969
2970 /* Function */
2971 for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2972 printf(" ");
2973
2974 printf("}");
2975 }
2976
2977 static void
2978 pretty_print_func_graph(void *data, int size, struct event *event,
2979 int cpu, int pid, const char *comm,
2980 unsigned long secs, unsigned long usecs)
2981 {
2982 if (event->flags & EVENT_FL_ISFUNCENT)
2983 pretty_print_func_ent(data, size, event,
2984 cpu, pid, comm, secs, usecs);
2985 else if (event->flags & EVENT_FL_ISFUNCRET)
2986 pretty_print_func_ret(data, size, event,
2987 cpu, pid, comm, secs, usecs);
2988 printf("\n");
2989 }
2990
2991 void print_event(int cpu, void *data, int size, unsigned long long nsecs,
2992 char *comm)
2993 {
2994 struct event *event;
2995 unsigned long secs;
2996 unsigned long usecs;
2997 int type;
2998 int pid;
2999
3000 secs = nsecs / NSECS_PER_SEC;
3001 nsecs -= secs * NSECS_PER_SEC;
3002 usecs = nsecs / NSECS_PER_USEC;
3003
3004 type = trace_parse_common_type(data);
3005
3006 event = trace_find_event(type);
3007 if (!event) {
3008 warning("ug! no event found for type %d", type);
3009 return;
3010 }
3011
3012 pid = trace_parse_common_pid(data);
3013
3014 if (event->flags & (EVENT_FL_ISFUNCENT | EVENT_FL_ISFUNCRET))
3015 return pretty_print_func_graph(data, size, event, cpu,
3016 pid, comm, secs, usecs);
3017
3018 if (latency_format) {
3019 printf("%8.8s-%-5d %3d",
3020 comm, pid, cpu);
3021 print_lat_fmt(data, size);
3022 } else
3023 printf("%16s-%-5d [%03d]", comm, pid, cpu);
3024
3025 printf(" %5lu.%06lu: %s: ", secs, usecs, event->name);
3026
3027 if (event->flags & EVENT_FL_FAILED) {
3028 printf("EVENT '%s' FAILED TO PARSE\n",
3029 event->name);
3030 return;
3031 }
3032
3033 pretty_print(data, size, event);
3034 printf("\n");
3035 }
3036
3037 static void print_fields(struct print_flag_sym *field)
3038 {
3039 printf("{ %s, %s }", field->value, field->str);
3040 if (field->next) {
3041 printf(", ");
3042 print_fields(field->next);
3043 }
3044 }
3045
3046 static void print_args(struct print_arg *args)
3047 {
3048 int print_paren = 1;
3049
3050 switch (args->type) {
3051 case PRINT_NULL:
3052 printf("null");
3053 break;
3054 case PRINT_ATOM:
3055 printf("%s", args->atom.atom);
3056 break;
3057 case PRINT_FIELD:
3058 printf("REC->%s", args->field.name);
3059 break;
3060 case PRINT_FLAGS:
3061 printf("__print_flags(");
3062 print_args(args->flags.field);
3063 printf(", %s, ", args->flags.delim);
3064 print_fields(args->flags.flags);
3065 printf(")");
3066 break;
3067 case PRINT_SYMBOL:
3068 printf("__print_symbolic(");
3069 print_args(args->symbol.field);
3070 printf(", ");
3071 print_fields(args->symbol.symbols);
3072 printf(")");
3073 break;
3074 case PRINT_STRING:
3075 printf("__get_str(%s)", args->string.string);
3076 break;
3077 case PRINT_TYPE:
3078 printf("(%s)", args->typecast.type);
3079 print_args(args->typecast.item);
3080 break;
3081 case PRINT_OP:
3082 if (strcmp(args->op.op, ":") == 0)
3083 print_paren = 0;
3084 if (print_paren)
3085 printf("(");
3086 print_args(args->op.left);
3087 printf(" %s ", args->op.op);
3088 print_args(args->op.right);
3089 if (print_paren)
3090 printf(")");
3091 break;
3092 default:
3093 /* we should warn... */
3094 return;
3095 }
3096 if (args->next) {
3097 printf("\n");
3098 print_args(args->next);
3099 }
3100 }
3101
3102 int parse_ftrace_file(char *buf, unsigned long size)
3103 {
3104 struct format_field *field;
3105 struct print_arg *arg, **list;
3106 struct event *event;
3107 int ret;
3108
3109 init_input_buf(buf, size);
3110
3111 event = alloc_event();
3112 if (!event)
3113 return -ENOMEM;
3114
3115 event->flags |= EVENT_FL_ISFTRACE;
3116
3117 event->name = event_read_name();
3118 if (!event->name)
3119 die("failed to read ftrace event name");
3120
3121 if (strcmp(event->name, "function") == 0)
3122 event->flags |= EVENT_FL_ISFUNC;
3123
3124 else if (strcmp(event->name, "funcgraph_entry") == 0)
3125 event->flags |= EVENT_FL_ISFUNCENT;
3126
3127 else if (strcmp(event->name, "funcgraph_exit") == 0)
3128 event->flags |= EVENT_FL_ISFUNCRET;
3129
3130 else if (strcmp(event->name, "bprint") == 0)
3131 event->flags |= EVENT_FL_ISBPRINT;
3132
3133 event->id = event_read_id();
3134 if (event->id < 0)
3135 die("failed to read ftrace event id");
3136
3137 add_event(event);
3138
3139 ret = event_read_format(event);
3140 if (ret < 0)
3141 die("failed to read ftrace event format");
3142
3143 ret = event_read_print(event);
3144 if (ret < 0)
3145 die("failed to read ftrace event print fmt");
3146
3147 /* New ftrace handles args */
3148 if (ret > 0)
3149 return 0;
3150 /*
3151 * The arguments for ftrace files are parsed by the fields.
3152 * Set up the fields as their arguments.
3153 */
3154 list = &event->print_fmt.args;
3155 for (field = event->format.fields; field; field = field->next) {
3156 arg = malloc_or_die(sizeof(*arg));
3157 memset(arg, 0, sizeof(*arg));
3158 *list = arg;
3159 list = &arg->next;
3160 arg->type = PRINT_FIELD;
3161 arg->field.name = field->name;
3162 arg->field.field = field;
3163 }
3164 return 0;
3165 }
3166
3167 int parse_event_file(char *buf, unsigned long size, char *sys)
3168 {
3169 struct event *event;
3170 int ret;
3171
3172 init_input_buf(buf, size);
3173
3174 event = alloc_event();
3175 if (!event)
3176 return -ENOMEM;
3177
3178 event->name = event_read_name();
3179 if (!event->name)
3180 die("failed to read event name");
3181
3182 event->id = event_read_id();
3183 if (event->id < 0)
3184 die("failed to read event id");
3185
3186 ret = event_read_format(event);
3187 if (ret < 0) {
3188 warning("failed to read event format for %s", event->name);
3189 goto event_failed;
3190 }
3191
3192 ret = event_read_print(event);
3193 if (ret < 0) {
3194 warning("failed to read event print fmt for %s", event->name);
3195 goto event_failed;
3196 }
3197
3198 event->system = strdup(sys);
3199
3200 #define PRINT_ARGS 0
3201 if (PRINT_ARGS && event->print_fmt.args)
3202 print_args(event->print_fmt.args);
3203
3204 add_event(event);
3205 return 0;
3206
3207 event_failed:
3208 event->flags |= EVENT_FL_FAILED;
3209 /* still add it even if it failed */
3210 add_event(event);
3211 return -1;
3212 }
3213
3214 void parse_set_info(int nr_cpus, int long_sz)
3215 {
3216 cpus = nr_cpus;
3217 long_size = long_sz;
3218 }
3219
3220 int common_pc(struct scripting_context *context)
3221 {
3222 return parse_common_pc(context->event_data);
3223 }
3224
3225 int common_flags(struct scripting_context *context)
3226 {
3227 return parse_common_flags(context->event_data);
3228 }
3229
3230 int common_lock_depth(struct scripting_context *context)
3231 {
3232 return parse_common_lock_depth(context->event_data);
3233 }
Linux with added FPC-III support