tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#include "../../../include/linux/hw_breakpoint.h"
2#include "util.h"
3#include "../perf.h"
4#include "evlist.h"
5#include "evsel.h"
6#include "parse-options.h"
7#include "parse-events.h"
8#include "exec_cmd.h"
9#include "string.h"
10#include "symbol.h"
11#include "cache.h"
12#include "header.h"
13#include "debugfs.h"
14#include "parse-events-bison.h"
15#define YY_EXTRA_TYPE int
16#include "parse-events-flex.h"
17#include "pmu.h"
18
19#define MAX_NAME_LEN 100
20
21struct event_symbol {
22 const char *symbol;
23 const char *alias;
24};
25
26#ifdef PARSER_DEBUG
27extern int parse_events_debug;
28#endif
29int parse_events_parse(void *data, void *scanner);
30
31static struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
32 [PERF_COUNT_HW_CPU_CYCLES] = {
33 .symbol = "cpu-cycles",
34 .alias = "cycles",
35 },
36 [PERF_COUNT_HW_INSTRUCTIONS] = {
37 .symbol = "instructions",
38 .alias = "",
39 },
40 [PERF_COUNT_HW_CACHE_REFERENCES] = {
41 .symbol = "cache-references",
42 .alias = "",
43 },
44 [PERF_COUNT_HW_CACHE_MISSES] = {
45 .symbol = "cache-misses",
46 .alias = "",
47 },
48 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
49 .symbol = "branch-instructions",
50 .alias = "branches",
51 },
52 [PERF_COUNT_HW_BRANCH_MISSES] = {
53 .symbol = "branch-misses",
54 .alias = "",
55 },
56 [PERF_COUNT_HW_BUS_CYCLES] = {
57 .symbol = "bus-cycles",
58 .alias = "",
59 },
60 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
61 .symbol = "stalled-cycles-frontend",
62 .alias = "idle-cycles-frontend",
63 },
64 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
65 .symbol = "stalled-cycles-backend",
66 .alias = "idle-cycles-backend",
67 },
68 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
69 .symbol = "ref-cycles",
70 .alias = "",
71 },
72};
73
74static struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
75 [PERF_COUNT_SW_CPU_CLOCK] = {
76 .symbol = "cpu-clock",
77 .alias = "",
78 },
79 [PERF_COUNT_SW_TASK_CLOCK] = {
80 .symbol = "task-clock",
81 .alias = "",
82 },
83 [PERF_COUNT_SW_PAGE_FAULTS] = {
84 .symbol = "page-faults",
85 .alias = "faults",
86 },
87 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
88 .symbol = "context-switches",
89 .alias = "cs",
90 },
91 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
92 .symbol = "cpu-migrations",
93 .alias = "migrations",
94 },
95 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
96 .symbol = "minor-faults",
97 .alias = "",
98 },
99 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
100 .symbol = "major-faults",
101 .alias = "",
102 },
103 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
104 .symbol = "alignment-faults",
105 .alias = "",
106 },
107 [PERF_COUNT_SW_EMULATION_FAULTS] = {
108 .symbol = "emulation-faults",
109 .alias = "",
110 },
111};
112
113#define __PERF_EVENT_FIELD(config, name) \
114 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
115
116#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
117#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
118#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
119#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
120
121#define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
122 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
123 if (sys_dirent.d_type == DT_DIR && \
124 (strcmp(sys_dirent.d_name, ".")) && \
125 (strcmp(sys_dirent.d_name, "..")))
126
127static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
128{
129 char evt_path[MAXPATHLEN];
130 int fd;
131
132 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
133 sys_dir->d_name, evt_dir->d_name);
134 fd = open(evt_path, O_RDONLY);
135 if (fd < 0)
136 return -EINVAL;
137 close(fd);
138
139 return 0;
140}
141
142#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
143 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
144 if (evt_dirent.d_type == DT_DIR && \
145 (strcmp(evt_dirent.d_name, ".")) && \
146 (strcmp(evt_dirent.d_name, "..")) && \
147 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
148
149#define MAX_EVENT_LENGTH 512
150
151
152struct tracepoint_path *tracepoint_id_to_path(u64 config)
153{
154 struct tracepoint_path *path = NULL;
155 DIR *sys_dir, *evt_dir;
156 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
157 char id_buf[24];
158 int fd;
159 u64 id;
160 char evt_path[MAXPATHLEN];
161 char dir_path[MAXPATHLEN];
162
163 if (debugfs_valid_mountpoint(tracing_events_path))
164 return NULL;
165
166 sys_dir = opendir(tracing_events_path);
167 if (!sys_dir)
168 return NULL;
169
170 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
171
172 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
173 sys_dirent.d_name);
174 evt_dir = opendir(dir_path);
175 if (!evt_dir)
176 continue;
177
178 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
179
180 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
181 evt_dirent.d_name);
182 fd = open(evt_path, O_RDONLY);
183 if (fd < 0)
184 continue;
185 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
186 close(fd);
187 continue;
188 }
189 close(fd);
190 id = atoll(id_buf);
191 if (id == config) {
192 closedir(evt_dir);
193 closedir(sys_dir);
194 path = zalloc(sizeof(*path));
195 path->system = malloc(MAX_EVENT_LENGTH);
196 if (!path->system) {
197 free(path);
198 return NULL;
199 }
200 path->name = malloc(MAX_EVENT_LENGTH);
201 if (!path->name) {
202 free(path->system);
203 free(path);
204 return NULL;
205 }
206 strncpy(path->system, sys_dirent.d_name,
207 MAX_EVENT_LENGTH);
208 strncpy(path->name, evt_dirent.d_name,
209 MAX_EVENT_LENGTH);
210 return path;
211 }
212 }
213 closedir(evt_dir);
214 }
215
216 closedir(sys_dir);
217 return NULL;
218}
219
220const char *event_type(int type)
221{
222 switch (type) {
223 case PERF_TYPE_HARDWARE:
224 return "hardware";
225
226 case PERF_TYPE_SOFTWARE:
227 return "software";
228
229 case PERF_TYPE_TRACEPOINT:
230 return "tracepoint";
231
232 case PERF_TYPE_HW_CACHE:
233 return "hardware-cache";
234
235 default:
236 break;
237 }
238
239 return "unknown";
240}
241
242static int add_event(struct list_head **_list, int *idx,
243 struct perf_event_attr *attr, char *name)
244{
245 struct perf_evsel *evsel;
246 struct list_head *list = *_list;
247
248 if (!list) {
249 list = malloc(sizeof(*list));
250 if (!list)
251 return -ENOMEM;
252 INIT_LIST_HEAD(list);
253 }
254
255 event_attr_init(attr);
256
257 evsel = perf_evsel__new(attr, (*idx)++);
258 if (!evsel) {
259 free(list);
260 return -ENOMEM;
261 }
262
263 if (name)
264 evsel->name = strdup(name);
265 list_add_tail(&evsel->node, list);
266 *_list = list;
267 return 0;
268}
269
270static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
271{
272 int i, j;
273 int n, longest = -1;
274
275 for (i = 0; i < size; i++) {
276 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
277 n = strlen(names[i][j]);
278 if (n > longest && !strncasecmp(str, names[i][j], n))
279 longest = n;
280 }
281 if (longest > 0)
282 return i;
283 }
284
285 return -1;
286}
287
288int parse_events_add_cache(struct list_head **list, int *idx,
289 char *type, char *op_result1, char *op_result2)
290{
291 struct perf_event_attr attr;
292 char name[MAX_NAME_LEN];
293 int cache_type = -1, cache_op = -1, cache_result = -1;
294 char *op_result[2] = { op_result1, op_result2 };
295 int i, n;
296
297 /*
298 * No fallback - if we cannot get a clear cache type
299 * then bail out:
300 */
301 cache_type = parse_aliases(type, perf_evsel__hw_cache,
302 PERF_COUNT_HW_CACHE_MAX);
303 if (cache_type == -1)
304 return -EINVAL;
305
306 n = snprintf(name, MAX_NAME_LEN, "%s", type);
307
308 for (i = 0; (i < 2) && (op_result[i]); i++) {
309 char *str = op_result[i];
310
311 snprintf(name + n, MAX_NAME_LEN - n, "-%s\n", str);
312
313 if (cache_op == -1) {
314 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
315 PERF_COUNT_HW_CACHE_OP_MAX);
316 if (cache_op >= 0) {
317 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
318 return -EINVAL;
319 continue;
320 }
321 }
322
323 if (cache_result == -1) {
324 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
325 PERF_COUNT_HW_CACHE_RESULT_MAX);
326 if (cache_result >= 0)
327 continue;
328 }
329 }
330
331 /*
332 * Fall back to reads:
333 */
334 if (cache_op == -1)
335 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
336
337 /*
338 * Fall back to accesses:
339 */
340 if (cache_result == -1)
341 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
342
343 memset(&attr, 0, sizeof(attr));
344 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
345 attr.type = PERF_TYPE_HW_CACHE;
346 return add_event(list, idx, &attr, name);
347}
348
349static int add_tracepoint(struct list_head **list, int *idx,
350 char *sys_name, char *evt_name)
351{
352 struct perf_event_attr attr;
353 char name[MAX_NAME_LEN];
354 char evt_path[MAXPATHLEN];
355 char id_buf[4];
356 u64 id;
357 int fd;
358
359 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
360 sys_name, evt_name);
361
362 fd = open(evt_path, O_RDONLY);
363 if (fd < 0)
364 return -1;
365
366 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
367 close(fd);
368 return -1;
369 }
370
371 close(fd);
372 id = atoll(id_buf);
373
374 memset(&attr, 0, sizeof(attr));
375 attr.config = id;
376 attr.type = PERF_TYPE_TRACEPOINT;
377 attr.sample_type |= PERF_SAMPLE_RAW;
378 attr.sample_type |= PERF_SAMPLE_TIME;
379 attr.sample_type |= PERF_SAMPLE_CPU;
380 attr.sample_type |= PERF_SAMPLE_PERIOD;
381 attr.sample_period = 1;
382
383 snprintf(name, MAX_NAME_LEN, "%s:%s", sys_name, evt_name);
384 return add_event(list, idx, &attr, name);
385}
386
387static int add_tracepoint_multi(struct list_head **list, int *idx,
388 char *sys_name, char *evt_name)
389{
390 char evt_path[MAXPATHLEN];
391 struct dirent *evt_ent;
392 DIR *evt_dir;
393 int ret = 0;
394
395 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
396 evt_dir = opendir(evt_path);
397 if (!evt_dir) {
398 perror("Can't open event dir");
399 return -1;
400 }
401
402 while (!ret && (evt_ent = readdir(evt_dir))) {
403 if (!strcmp(evt_ent->d_name, ".")
404 || !strcmp(evt_ent->d_name, "..")
405 || !strcmp(evt_ent->d_name, "enable")
406 || !strcmp(evt_ent->d_name, "filter"))
407 continue;
408
409 if (!strglobmatch(evt_ent->d_name, evt_name))
410 continue;
411
412 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
413 }
414
415 return ret;
416}
417
418int parse_events_add_tracepoint(struct list_head **list, int *idx,
419 char *sys, char *event)
420{
421 int ret;
422
423 ret = debugfs_valid_mountpoint(tracing_events_path);
424 if (ret)
425 return ret;
426
427 return strpbrk(event, "*?") ?
428 add_tracepoint_multi(list, idx, sys, event) :
429 add_tracepoint(list, idx, sys, event);
430}
431
432static int
433parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
434{
435 int i;
436
437 for (i = 0; i < 3; i++) {
438 if (!type || !type[i])
439 break;
440
441#define CHECK_SET_TYPE(bit) \
442do { \
443 if (attr->bp_type & bit) \
444 return -EINVAL; \
445 else \
446 attr->bp_type |= bit; \
447} while (0)
448
449 switch (type[i]) {
450 case 'r':
451 CHECK_SET_TYPE(HW_BREAKPOINT_R);
452 break;
453 case 'w':
454 CHECK_SET_TYPE(HW_BREAKPOINT_W);
455 break;
456 case 'x':
457 CHECK_SET_TYPE(HW_BREAKPOINT_X);
458 break;
459 default:
460 return -EINVAL;
461 }
462 }
463
464#undef CHECK_SET_TYPE
465
466 if (!attr->bp_type) /* Default */
467 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
468
469 return 0;
470}
471
472int parse_events_add_breakpoint(struct list_head **list, int *idx,
473 void *ptr, char *type)
474{
475 struct perf_event_attr attr;
476
477 memset(&attr, 0, sizeof(attr));
478 attr.bp_addr = (unsigned long) ptr;
479
480 if (parse_breakpoint_type(type, &attr))
481 return -EINVAL;
482
483 /*
484 * We should find a nice way to override the access length
485 * Provide some defaults for now
486 */
487 if (attr.bp_type == HW_BREAKPOINT_X)
488 attr.bp_len = sizeof(long);
489 else
490 attr.bp_len = HW_BREAKPOINT_LEN_4;
491
492 attr.type = PERF_TYPE_BREAKPOINT;
493 attr.sample_period = 1;
494
495 return add_event(list, idx, &attr, NULL);
496}
497
498static int config_term(struct perf_event_attr *attr,
499 struct parse_events__term *term)
500{
501#define CHECK_TYPE_VAL(type) \
502do { \
503 if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
504 return -EINVAL; \
505} while (0)
506
507 switch (term->type_term) {
508 case PARSE_EVENTS__TERM_TYPE_CONFIG:
509 CHECK_TYPE_VAL(NUM);
510 attr->config = term->val.num;
511 break;
512 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
513 CHECK_TYPE_VAL(NUM);
514 attr->config1 = term->val.num;
515 break;
516 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
517 CHECK_TYPE_VAL(NUM);
518 attr->config2 = term->val.num;
519 break;
520 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
521 CHECK_TYPE_VAL(NUM);
522 attr->sample_period = term->val.num;
523 break;
524 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
525 /*
526 * TODO uncomment when the field is available
527 * attr->branch_sample_type = term->val.num;
528 */
529 break;
530 case PARSE_EVENTS__TERM_TYPE_NAME:
531 CHECK_TYPE_VAL(STR);
532 break;
533 default:
534 return -EINVAL;
535 }
536
537 return 0;
538#undef CHECK_TYPE_VAL
539}
540
541static int config_attr(struct perf_event_attr *attr,
542 struct list_head *head, int fail)
543{
544 struct parse_events__term *term;
545
546 list_for_each_entry(term, head, list)
547 if (config_term(attr, term) && fail)
548 return -EINVAL;
549
550 return 0;
551}
552
553int parse_events_add_numeric(struct list_head **list, int *idx,
554 unsigned long type, unsigned long config,
555 struct list_head *head_config)
556{
557 struct perf_event_attr attr;
558
559 memset(&attr, 0, sizeof(attr));
560 attr.type = type;
561 attr.config = config;
562
563 if (head_config &&
564 config_attr(&attr, head_config, 1))
565 return -EINVAL;
566
567 return add_event(list, idx, &attr, NULL);
568}
569
570static int parse_events__is_name_term(struct parse_events__term *term)
571{
572 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
573}
574
575static char *pmu_event_name(struct list_head *head_terms)
576{
577 struct parse_events__term *term;
578
579 list_for_each_entry(term, head_terms, list)
580 if (parse_events__is_name_term(term))
581 return term->val.str;
582
583 return NULL;
584}
585
586int parse_events_add_pmu(struct list_head **list, int *idx,
587 char *name, struct list_head *head_config)
588{
589 struct perf_event_attr attr;
590 struct perf_pmu *pmu;
591
592 pmu = perf_pmu__find(name);
593 if (!pmu)
594 return -EINVAL;
595
596 memset(&attr, 0, sizeof(attr));
597
598 if (perf_pmu__check_alias(pmu, head_config))
599 return -EINVAL;
600
601 /*
602 * Configure hardcoded terms first, no need to check
603 * return value when called with fail == 0 ;)
604 */
605 config_attr(&attr, head_config, 0);
606
607 if (perf_pmu__config(pmu, &attr, head_config))
608 return -EINVAL;
609
610 return add_event(list, idx, &attr,
611 pmu_event_name(head_config));
612}
613
614void parse_events_update_lists(struct list_head *list_event,
615 struct list_head *list_all)
616{
617 /*
618 * Called for single event definition. Update the
619 * 'all event' list, and reinit the 'signle event'
620 * list, for next event definition.
621 */
622 list_splice_tail(list_event, list_all);
623 free(list_event);
624}
625
626int parse_events_modifier(struct list_head *list, char *str)
627{
628 struct perf_evsel *evsel;
629 int exclude = 0, exclude_GH = 0;
630 int eu = 0, ek = 0, eh = 0, eH = 0, eG = 0, precise = 0;
631
632 if (str == NULL)
633 return 0;
634
635 while (*str) {
636 if (*str == 'u') {
637 if (!exclude)
638 exclude = eu = ek = eh = 1;
639 eu = 0;
640 } else if (*str == 'k') {
641 if (!exclude)
642 exclude = eu = ek = eh = 1;
643 ek = 0;
644 } else if (*str == 'h') {
645 if (!exclude)
646 exclude = eu = ek = eh = 1;
647 eh = 0;
648 } else if (*str == 'G') {
649 if (!exclude_GH)
650 exclude_GH = eG = eH = 1;
651 eG = 0;
652 } else if (*str == 'H') {
653 if (!exclude_GH)
654 exclude_GH = eG = eH = 1;
655 eH = 0;
656 } else if (*str == 'p') {
657 precise++;
658 } else
659 break;
660
661 ++str;
662 }
663
664 /*
665 * precise ip:
666 *
667 * 0 - SAMPLE_IP can have arbitrary skid
668 * 1 - SAMPLE_IP must have constant skid
669 * 2 - SAMPLE_IP requested to have 0 skid
670 * 3 - SAMPLE_IP must have 0 skid
671 *
672 * See also PERF_RECORD_MISC_EXACT_IP
673 */
674 if (precise > 3)
675 return -EINVAL;
676
677 list_for_each_entry(evsel, list, node) {
678 evsel->attr.exclude_user = eu;
679 evsel->attr.exclude_kernel = ek;
680 evsel->attr.exclude_hv = eh;
681 evsel->attr.precise_ip = precise;
682 evsel->attr.exclude_host = eH;
683 evsel->attr.exclude_guest = eG;
684 }
685
686 return 0;
687}
688
689static int parse_events__scanner(const char *str, void *data, int start_token)
690{
691 YY_BUFFER_STATE buffer;
692 void *scanner;
693 int ret;
694
695 ret = parse_events_lex_init_extra(start_token, &scanner);
696 if (ret)
697 return ret;
698
699 buffer = parse_events__scan_string(str, scanner);
700
701#ifdef PARSER_DEBUG
702 parse_events_debug = 1;
703#endif
704 ret = parse_events_parse(data, scanner);
705
706 parse_events__flush_buffer(buffer, scanner);
707 parse_events__delete_buffer(buffer, scanner);
708 parse_events_lex_destroy(scanner);
709 return ret;
710}
711
712/*
713 * parse event config string, return a list of event terms.
714 */
715int parse_events_terms(struct list_head *terms, const char *str)
716{
717 struct parse_events_data__terms data = {
718 .terms = NULL,
719 };
720 int ret;
721
722 ret = parse_events__scanner(str, &data, PE_START_TERMS);
723 if (!ret) {
724 list_splice(data.terms, terms);
725 free(data.terms);
726 return 0;
727 }
728
729 parse_events__free_terms(data.terms);
730 return ret;
731}
732
733int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
734{
735 struct parse_events_data__events data = {
736 .list = LIST_HEAD_INIT(data.list),
737 .idx = evlist->nr_entries,
738 };
739 int ret;
740
741 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
742 if (!ret) {
743 int entries = data.idx - evlist->nr_entries;
744 perf_evlist__splice_list_tail(evlist, &data.list, entries);
745 return 0;
746 }
747
748 /*
749 * There are 2 users - builtin-record and builtin-test objects.
750 * Both call perf_evlist__delete in case of error, so we dont
751 * need to bother.
752 */
753 fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
754 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
755 return ret;
756}
757
758int parse_events_option(const struct option *opt, const char *str,
759 int unset __used)
760{
761 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
762 return parse_events(evlist, str, unset);
763}
764
765int parse_filter(const struct option *opt, const char *str,
766 int unset __used)
767{
768 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
769 struct perf_evsel *last = NULL;
770
771 if (evlist->nr_entries > 0)
772 last = list_entry(evlist->entries.prev, struct perf_evsel, node);
773
774 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
775 fprintf(stderr,
776 "-F option should follow a -e tracepoint option\n");
777 return -1;
778 }
779
780 last->filter = strdup(str);
781 if (last->filter == NULL) {
782 fprintf(stderr, "not enough memory to hold filter string\n");
783 return -1;
784 }
785
786 return 0;
787}
788
789static const char * const event_type_descriptors[] = {
790 "Hardware event",
791 "Software event",
792 "Tracepoint event",
793 "Hardware cache event",
794 "Raw hardware event descriptor",
795 "Hardware breakpoint",
796};
797
798/*
799 * Print the events from <debugfs_mount_point>/tracing/events
800 */
801
802void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
803{
804 DIR *sys_dir, *evt_dir;
805 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
806 char evt_path[MAXPATHLEN];
807 char dir_path[MAXPATHLEN];
808
809 if (debugfs_valid_mountpoint(tracing_events_path))
810 return;
811
812 sys_dir = opendir(tracing_events_path);
813 if (!sys_dir)
814 return;
815
816 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
817 if (subsys_glob != NULL &&
818 !strglobmatch(sys_dirent.d_name, subsys_glob))
819 continue;
820
821 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
822 sys_dirent.d_name);
823 evt_dir = opendir(dir_path);
824 if (!evt_dir)
825 continue;
826
827 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
828 if (event_glob != NULL &&
829 !strglobmatch(evt_dirent.d_name, event_glob))
830 continue;
831
832 snprintf(evt_path, MAXPATHLEN, "%s:%s",
833 sys_dirent.d_name, evt_dirent.d_name);
834 printf(" %-50s [%s]\n", evt_path,
835 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
836 }
837 closedir(evt_dir);
838 }
839 closedir(sys_dir);
840}
841
842/*
843 * Check whether event is in <debugfs_mount_point>/tracing/events
844 */
845
846int is_valid_tracepoint(const char *event_string)
847{
848 DIR *sys_dir, *evt_dir;
849 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
850 char evt_path[MAXPATHLEN];
851 char dir_path[MAXPATHLEN];
852
853 if (debugfs_valid_mountpoint(tracing_events_path))
854 return 0;
855
856 sys_dir = opendir(tracing_events_path);
857 if (!sys_dir)
858 return 0;
859
860 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
861
862 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
863 sys_dirent.d_name);
864 evt_dir = opendir(dir_path);
865 if (!evt_dir)
866 continue;
867
868 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
869 snprintf(evt_path, MAXPATHLEN, "%s:%s",
870 sys_dirent.d_name, evt_dirent.d_name);
871 if (!strcmp(evt_path, event_string)) {
872 closedir(evt_dir);
873 closedir(sys_dir);
874 return 1;
875 }
876 }
877 closedir(evt_dir);
878 }
879 closedir(sys_dir);
880 return 0;
881}
882
883static void __print_events_type(u8 type, struct event_symbol *syms,
884 unsigned max)
885{
886 char name[64];
887 unsigned i;
888
889 for (i = 0; i < max ; i++, syms++) {
890 if (strlen(syms->alias))
891 snprintf(name, sizeof(name), "%s OR %s",
892 syms->symbol, syms->alias);
893 else
894 snprintf(name, sizeof(name), "%s", syms->symbol);
895
896 printf(" %-50s [%s]\n", name,
897 event_type_descriptors[type]);
898 }
899}
900
901void print_events_type(u8 type)
902{
903 if (type == PERF_TYPE_SOFTWARE)
904 __print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX);
905 else
906 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
907}
908
909int print_hwcache_events(const char *event_glob)
910{
911 unsigned int type, op, i, printed = 0;
912 char name[64];
913
914 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
915 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
916 /* skip invalid cache type */
917 if (!perf_evsel__is_cache_op_valid(type, op))
918 continue;
919
920 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
921 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
922 name, sizeof(name));
923 if (event_glob != NULL && !strglobmatch(name, event_glob))
924 continue;
925
926 printf(" %-50s [%s]\n", name,
927 event_type_descriptors[PERF_TYPE_HW_CACHE]);
928 ++printed;
929 }
930 }
931 }
932
933 return printed;
934}
935
936static void print_symbol_events(const char *event_glob, unsigned type,
937 struct event_symbol *syms, unsigned max)
938{
939 unsigned i, printed = 0;
940 char name[MAX_NAME_LEN];
941
942 for (i = 0; i < max; i++, syms++) {
943
944 if (event_glob != NULL &&
945 !(strglobmatch(syms->symbol, event_glob) ||
946 (syms->alias && strglobmatch(syms->alias, event_glob))))
947 continue;
948
949 if (strlen(syms->alias))
950 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
951 else
952 strncpy(name, syms->symbol, MAX_NAME_LEN);
953
954 printf(" %-50s [%s]\n", name, event_type_descriptors[type]);
955
956 printed++;
957 }
958
959 if (printed)
960 printf("\n");
961}
962
963/*
964 * Print the help text for the event symbols:
965 */
966void print_events(const char *event_glob)
967{
968
969 printf("\n");
970 printf("List of pre-defined events (to be used in -e):\n");
971
972 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
973 event_symbols_hw, PERF_COUNT_HW_MAX);
974
975 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
976 event_symbols_sw, PERF_COUNT_SW_MAX);
977
978 print_hwcache_events(event_glob);
979
980 if (event_glob != NULL)
981 return;
982
983 printf("\n");
984 printf(" %-50s [%s]\n",
985 "rNNN",
986 event_type_descriptors[PERF_TYPE_RAW]);
987 printf(" %-50s [%s]\n",
988 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
989 event_type_descriptors[PERF_TYPE_RAW]);
990 printf(" (see 'perf list --help' on how to encode it)\n");
991 printf("\n");
992
993 printf(" %-50s [%s]\n",
994 "mem:<addr>[:access]",
995 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
996 printf("\n");
997
998 print_tracepoint_events(NULL, NULL);
999}
1000
1001int parse_events__is_hardcoded_term(struct parse_events__term *term)
1002{
1003 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1004}
1005
1006static int new_term(struct parse_events__term **_term, int type_val,
1007 int type_term, char *config,
1008 char *str, long num)
1009{
1010 struct parse_events__term *term;
1011
1012 term = zalloc(sizeof(*term));
1013 if (!term)
1014 return -ENOMEM;
1015
1016 INIT_LIST_HEAD(&term->list);
1017 term->type_val = type_val;
1018 term->type_term = type_term;
1019 term->config = config;
1020
1021 switch (type_val) {
1022 case PARSE_EVENTS__TERM_TYPE_NUM:
1023 term->val.num = num;
1024 break;
1025 case PARSE_EVENTS__TERM_TYPE_STR:
1026 term->val.str = str;
1027 break;
1028 default:
1029 return -EINVAL;
1030 }
1031
1032 *_term = term;
1033 return 0;
1034}
1035
1036int parse_events__term_num(struct parse_events__term **term,
1037 int type_term, char *config, long num)
1038{
1039 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1040 config, NULL, num);
1041}
1042
1043int parse_events__term_str(struct parse_events__term **term,
1044 int type_term, char *config, char *str)
1045{
1046 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1047 config, str, 0);
1048}
1049
1050int parse_events__term_clone(struct parse_events__term **new,
1051 struct parse_events__term *term)
1052{
1053 return new_term(new, term->type_val, term->type_term, term->config,
1054 term->val.str, term->val.num);
1055}
1056
1057void parse_events__free_terms(struct list_head *terms)
1058{
1059 struct parse_events__term *term, *h;
1060
1061 list_for_each_entry_safe(term, h, terms, list)
1062 free(term);
1063
1064 free(terms);
1065}