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