1 #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 "debug.h"
14 #include <api/fs/debugfs.h>
15 #include "parse-events-bison.h"
16 #define YY_EXTRA_TYPE int
17 #include "parse-events-flex.h"
18 #include "pmu.h"
19 #include "thread_map.h"
20
21 #define MAX_NAME_LEN 100
22
23 struct event_symbol {
24 const char *symbol;
25 const char *alias;
26 };
27
28 #ifdef PARSER_DEBUG
29 extern int parse_events_debug;
30 #endif
31 int parse_events_parse(void *data, void *scanner);
32
33 static struct perf_pmu_event_symbol *perf_pmu_events_list;
34 /*
35 * The variable indicates the number of supported pmu event symbols.
36 * 0 means not initialized and ready to init
37 * -1 means failed to init, don't try anymore
38 * >0 is the number of supported pmu event symbols
39 */
40 static int perf_pmu_events_list_num;
41
42 static struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
43 [PERF_COUNT_HW_CPU_CYCLES] = {
44 .symbol = "cpu-cycles",
45 .alias = "cycles",
46 },
47 [PERF_COUNT_HW_INSTRUCTIONS] = {
48 .symbol = "instructions",
49 .alias = "",
50 },
51 [PERF_COUNT_HW_CACHE_REFERENCES] = {
52 .symbol = "cache-references",
53 .alias = "",
54 },
55 [PERF_COUNT_HW_CACHE_MISSES] = {
56 .symbol = "cache-misses",
57 .alias = "",
58 },
59 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
60 .symbol = "branch-instructions",
61 .alias = "branches",
62 },
63 [PERF_COUNT_HW_BRANCH_MISSES] = {
64 .symbol = "branch-misses",
65 .alias = "",
66 },
67 [PERF_COUNT_HW_BUS_CYCLES] = {
68 .symbol = "bus-cycles",
69 .alias = "",
70 },
71 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
72 .symbol = "stalled-cycles-frontend",
73 .alias = "idle-cycles-frontend",
74 },
75 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
76 .symbol = "stalled-cycles-backend",
77 .alias = "idle-cycles-backend",
78 },
79 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
80 .symbol = "ref-cycles",
81 .alias = "",
82 },
83 };
84
85 static struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
86 [PERF_COUNT_SW_CPU_CLOCK] = {
87 .symbol = "cpu-clock",
88 .alias = "",
89 },
90 [PERF_COUNT_SW_TASK_CLOCK] = {
91 .symbol = "task-clock",
92 .alias = "",
93 },
94 [PERF_COUNT_SW_PAGE_FAULTS] = {
95 .symbol = "page-faults",
96 .alias = "faults",
97 },
98 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
99 .symbol = "context-switches",
100 .alias = "cs",
101 },
102 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
103 .symbol = "cpu-migrations",
104 .alias = "migrations",
105 },
106 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
107 .symbol = "minor-faults",
108 .alias = "",
109 },
110 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
111 .symbol = "major-faults",
112 .alias = "",
113 },
114 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
115 .symbol = "alignment-faults",
116 .alias = "",
117 },
118 [PERF_COUNT_SW_EMULATION_FAULTS] = {
119 .symbol = "emulation-faults",
120 .alias = "",
121 },
122 [PERF_COUNT_SW_DUMMY] = {
123 .symbol = "dummy",
124 .alias = "",
125 },
126 };
127
128 #define __PERF_EVENT_FIELD(config, name) \
129 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
130
131 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
132 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
133 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
134 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
135
136 #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
137 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
138 if (sys_dirent.d_type == DT_DIR && \
139 (strcmp(sys_dirent.d_name, ".")) && \
140 (strcmp(sys_dirent.d_name, "..")))
141
tp_event_has_id(struct dirent * sys_dir,struct dirent * evt_dir)142 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
143 {
144 char evt_path[MAXPATHLEN];
145 int fd;
146
147 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
148 sys_dir->d_name, evt_dir->d_name);
149 fd = open(evt_path, O_RDONLY);
150 if (fd < 0)
151 return -EINVAL;
152 close(fd);
153
154 return 0;
155 }
156
157 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
158 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
159 if (evt_dirent.d_type == DT_DIR && \
160 (strcmp(evt_dirent.d_name, ".")) && \
161 (strcmp(evt_dirent.d_name, "..")) && \
162 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
163
164 #define MAX_EVENT_LENGTH 512
165
166
tracepoint_id_to_path(u64 config)167 struct tracepoint_path *tracepoint_id_to_path(u64 config)
168 {
169 struct tracepoint_path *path = NULL;
170 DIR *sys_dir, *evt_dir;
171 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
172 char id_buf[24];
173 int fd;
174 u64 id;
175 char evt_path[MAXPATHLEN];
176 char dir_path[MAXPATHLEN];
177
178 if (debugfs_valid_mountpoint(tracing_events_path))
179 return NULL;
180
181 sys_dir = opendir(tracing_events_path);
182 if (!sys_dir)
183 return NULL;
184
185 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
186
187 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
188 sys_dirent.d_name);
189 evt_dir = opendir(dir_path);
190 if (!evt_dir)
191 continue;
192
193 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
194
195 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
196 evt_dirent.d_name);
197 fd = open(evt_path, O_RDONLY);
198 if (fd < 0)
199 continue;
200 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
201 close(fd);
202 continue;
203 }
204 close(fd);
205 id = atoll(id_buf);
206 if (id == config) {
207 closedir(evt_dir);
208 closedir(sys_dir);
209 path = zalloc(sizeof(*path));
210 path->system = malloc(MAX_EVENT_LENGTH);
211 if (!path->system) {
212 free(path);
213 return NULL;
214 }
215 path->name = malloc(MAX_EVENT_LENGTH);
216 if (!path->name) {
217 zfree(&path->system);
218 free(path);
219 return NULL;
220 }
221 strncpy(path->system, sys_dirent.d_name,
222 MAX_EVENT_LENGTH);
223 strncpy(path->name, evt_dirent.d_name,
224 MAX_EVENT_LENGTH);
225 return path;
226 }
227 }
228 closedir(evt_dir);
229 }
230
231 closedir(sys_dir);
232 return NULL;
233 }
234
tracepoint_name_to_path(const char * name)235 struct tracepoint_path *tracepoint_name_to_path(const char *name)
236 {
237 struct tracepoint_path *path = zalloc(sizeof(*path));
238 char *str = strchr(name, ':');
239
240 if (path == NULL || str == NULL) {
241 free(path);
242 return NULL;
243 }
244
245 path->system = strndup(name, str - name);
246 path->name = strdup(str+1);
247
248 if (path->system == NULL || path->name == NULL) {
249 zfree(&path->system);
250 zfree(&path->name);
251 free(path);
252 path = NULL;
253 }
254
255 return path;
256 }
257
event_type(int type)258 const char *event_type(int type)
259 {
260 switch (type) {
261 case PERF_TYPE_HARDWARE:
262 return "hardware";
263
264 case PERF_TYPE_SOFTWARE:
265 return "software";
266
267 case PERF_TYPE_TRACEPOINT:
268 return "tracepoint";
269
270 case PERF_TYPE_HW_CACHE:
271 return "hardware-cache";
272
273 default:
274 break;
275 }
276
277 return "unknown";
278 }
279
280
281
282 static struct perf_evsel *
__add_event(struct list_head * list,int * idx,struct perf_event_attr * attr,char * name,struct cpu_map * cpus)283 __add_event(struct list_head *list, int *idx,
284 struct perf_event_attr *attr,
285 char *name, struct cpu_map *cpus)
286 {
287 struct perf_evsel *evsel;
288
289 event_attr_init(attr);
290
291 evsel = perf_evsel__new_idx(attr, (*idx)++);
292 if (!evsel)
293 return NULL;
294
295 evsel->cpus = cpus;
296 if (name)
297 evsel->name = strdup(name);
298 list_add_tail(&evsel->node, list);
299 return evsel;
300 }
301
add_event(struct list_head * list,int * idx,struct perf_event_attr * attr,char * name)302 static int add_event(struct list_head *list, int *idx,
303 struct perf_event_attr *attr, char *name)
304 {
305 return __add_event(list, idx, attr, name, NULL) ? 0 : -ENOMEM;
306 }
307
parse_aliases(char * str,const char * names[][PERF_EVSEL__MAX_ALIASES],int size)308 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
309 {
310 int i, j;
311 int n, longest = -1;
312
313 for (i = 0; i < size; i++) {
314 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
315 n = strlen(names[i][j]);
316 if (n > longest && !strncasecmp(str, names[i][j], n))
317 longest = n;
318 }
319 if (longest > 0)
320 return i;
321 }
322
323 return -1;
324 }
325
parse_events_add_cache(struct list_head * list,int * idx,char * type,char * op_result1,char * op_result2)326 int parse_events_add_cache(struct list_head *list, int *idx,
327 char *type, char *op_result1, char *op_result2)
328 {
329 struct perf_event_attr attr;
330 char name[MAX_NAME_LEN];
331 int cache_type = -1, cache_op = -1, cache_result = -1;
332 char *op_result[2] = { op_result1, op_result2 };
333 int i, n;
334
335 /*
336 * No fallback - if we cannot get a clear cache type
337 * then bail out:
338 */
339 cache_type = parse_aliases(type, perf_evsel__hw_cache,
340 PERF_COUNT_HW_CACHE_MAX);
341 if (cache_type == -1)
342 return -EINVAL;
343
344 n = snprintf(name, MAX_NAME_LEN, "%s", type);
345
346 for (i = 0; (i < 2) && (op_result[i]); i++) {
347 char *str = op_result[i];
348
349 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
350
351 if (cache_op == -1) {
352 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
353 PERF_COUNT_HW_CACHE_OP_MAX);
354 if (cache_op >= 0) {
355 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
356 return -EINVAL;
357 continue;
358 }
359 }
360
361 if (cache_result == -1) {
362 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
363 PERF_COUNT_HW_CACHE_RESULT_MAX);
364 if (cache_result >= 0)
365 continue;
366 }
367 }
368
369 /*
370 * Fall back to reads:
371 */
372 if (cache_op == -1)
373 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
374
375 /*
376 * Fall back to accesses:
377 */
378 if (cache_result == -1)
379 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
380
381 memset(&attr, 0, sizeof(attr));
382 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
383 attr.type = PERF_TYPE_HW_CACHE;
384 return add_event(list, idx, &attr, name);
385 }
386
add_tracepoint(struct list_head * list,int * idx,char * sys_name,char * evt_name)387 static int add_tracepoint(struct list_head *list, int *idx,
388 char *sys_name, char *evt_name)
389 {
390 struct perf_evsel *evsel;
391
392 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
393 if (!evsel)
394 return -ENOMEM;
395
396 list_add_tail(&evsel->node, list);
397
398 return 0;
399 }
400
add_tracepoint_multi_event(struct list_head * list,int * idx,char * sys_name,char * evt_name)401 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
402 char *sys_name, char *evt_name)
403 {
404 char evt_path[MAXPATHLEN];
405 struct dirent *evt_ent;
406 DIR *evt_dir;
407 int ret = 0;
408
409 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
410 evt_dir = opendir(evt_path);
411 if (!evt_dir) {
412 perror("Can't open event dir");
413 return -1;
414 }
415
416 while (!ret && (evt_ent = readdir(evt_dir))) {
417 if (!strcmp(evt_ent->d_name, ".")
418 || !strcmp(evt_ent->d_name, "..")
419 || !strcmp(evt_ent->d_name, "enable")
420 || !strcmp(evt_ent->d_name, "filter"))
421 continue;
422
423 if (!strglobmatch(evt_ent->d_name, evt_name))
424 continue;
425
426 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
427 }
428
429 closedir(evt_dir);
430 return ret;
431 }
432
add_tracepoint_event(struct list_head * list,int * idx,char * sys_name,char * evt_name)433 static int add_tracepoint_event(struct list_head *list, int *idx,
434 char *sys_name, char *evt_name)
435 {
436 return strpbrk(evt_name, "*?") ?
437 add_tracepoint_multi_event(list, idx, sys_name, evt_name) :
438 add_tracepoint(list, idx, sys_name, evt_name);
439 }
440
add_tracepoint_multi_sys(struct list_head * list,int * idx,char * sys_name,char * evt_name)441 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
442 char *sys_name, char *evt_name)
443 {
444 struct dirent *events_ent;
445 DIR *events_dir;
446 int ret = 0;
447
448 events_dir = opendir(tracing_events_path);
449 if (!events_dir) {
450 perror("Can't open event dir");
451 return -1;
452 }
453
454 while (!ret && (events_ent = readdir(events_dir))) {
455 if (!strcmp(events_ent->d_name, ".")
456 || !strcmp(events_ent->d_name, "..")
457 || !strcmp(events_ent->d_name, "enable")
458 || !strcmp(events_ent->d_name, "header_event")
459 || !strcmp(events_ent->d_name, "header_page"))
460 continue;
461
462 if (!strglobmatch(events_ent->d_name, sys_name))
463 continue;
464
465 ret = add_tracepoint_event(list, idx, events_ent->d_name,
466 evt_name);
467 }
468
469 closedir(events_dir);
470 return ret;
471 }
472
parse_events_add_tracepoint(struct list_head * list,int * idx,char * sys,char * event)473 int parse_events_add_tracepoint(struct list_head *list, int *idx,
474 char *sys, char *event)
475 {
476 int ret;
477
478 ret = debugfs_valid_mountpoint(tracing_events_path);
479 if (ret)
480 return ret;
481
482 if (strpbrk(sys, "*?"))
483 return add_tracepoint_multi_sys(list, idx, sys, event);
484 else
485 return add_tracepoint_event(list, idx, sys, event);
486 }
487
488 static int
parse_breakpoint_type(const char * type,struct perf_event_attr * attr)489 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
490 {
491 int i;
492
493 for (i = 0; i < 3; i++) {
494 if (!type || !type[i])
495 break;
496
497 #define CHECK_SET_TYPE(bit) \
498 do { \
499 if (attr->bp_type & bit) \
500 return -EINVAL; \
501 else \
502 attr->bp_type |= bit; \
503 } while (0)
504
505 switch (type[i]) {
506 case 'r':
507 CHECK_SET_TYPE(HW_BREAKPOINT_R);
508 break;
509 case 'w':
510 CHECK_SET_TYPE(HW_BREAKPOINT_W);
511 break;
512 case 'x':
513 CHECK_SET_TYPE(HW_BREAKPOINT_X);
514 break;
515 default:
516 return -EINVAL;
517 }
518 }
519
520 #undef CHECK_SET_TYPE
521
522 if (!attr->bp_type) /* Default */
523 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
524
525 return 0;
526 }
527
parse_events_add_breakpoint(struct list_head * list,int * idx,void * ptr,char * type)528 int parse_events_add_breakpoint(struct list_head *list, int *idx,
529 void *ptr, char *type)
530 {
531 struct perf_event_attr attr;
532
533 memset(&attr, 0, sizeof(attr));
534 attr.bp_addr = (unsigned long) ptr;
535
536 if (parse_breakpoint_type(type, &attr))
537 return -EINVAL;
538
539 /*
540 * We should find a nice way to override the access length
541 * Provide some defaults for now
542 */
543 if (attr.bp_type == HW_BREAKPOINT_X)
544 attr.bp_len = sizeof(long);
545 else
546 attr.bp_len = HW_BREAKPOINT_LEN_4;
547
548 attr.type = PERF_TYPE_BREAKPOINT;
549 attr.sample_period = 1;
550
551 return add_event(list, idx, &attr, NULL);
552 }
553
config_term(struct perf_event_attr * attr,struct parse_events_term * term)554 static int config_term(struct perf_event_attr *attr,
555 struct parse_events_term *term)
556 {
557 #define CHECK_TYPE_VAL(type) \
558 do { \
559 if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
560 return -EINVAL; \
561 } while (0)
562
563 switch (term->type_term) {
564 case PARSE_EVENTS__TERM_TYPE_CONFIG:
565 CHECK_TYPE_VAL(NUM);
566 attr->config = term->val.num;
567 break;
568 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
569 CHECK_TYPE_VAL(NUM);
570 attr->config1 = term->val.num;
571 break;
572 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
573 CHECK_TYPE_VAL(NUM);
574 attr->config2 = term->val.num;
575 break;
576 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
577 CHECK_TYPE_VAL(NUM);
578 attr->sample_period = term->val.num;
579 break;
580 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
581 /*
582 * TODO uncomment when the field is available
583 * attr->branch_sample_type = term->val.num;
584 */
585 break;
586 case PARSE_EVENTS__TERM_TYPE_NAME:
587 CHECK_TYPE_VAL(STR);
588 break;
589 default:
590 return -EINVAL;
591 }
592
593 return 0;
594 #undef CHECK_TYPE_VAL
595 }
596
config_attr(struct perf_event_attr * attr,struct list_head * head,int fail)597 static int config_attr(struct perf_event_attr *attr,
598 struct list_head *head, int fail)
599 {
600 struct parse_events_term *term;
601
602 list_for_each_entry(term, head, list)
603 if (config_term(attr, term) && fail)
604 return -EINVAL;
605
606 return 0;
607 }
608
parse_events_add_numeric(struct list_head * list,int * idx,u32 type,u64 config,struct list_head * head_config)609 int parse_events_add_numeric(struct list_head *list, int *idx,
610 u32 type, u64 config,
611 struct list_head *head_config)
612 {
613 struct perf_event_attr attr;
614
615 memset(&attr, 0, sizeof(attr));
616 attr.type = type;
617 attr.config = config;
618
619 if (head_config &&
620 config_attr(&attr, head_config, 1))
621 return -EINVAL;
622
623 return add_event(list, idx, &attr, NULL);
624 }
625
parse_events__is_name_term(struct parse_events_term * term)626 static int parse_events__is_name_term(struct parse_events_term *term)
627 {
628 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
629 }
630
pmu_event_name(struct list_head * head_terms)631 static char *pmu_event_name(struct list_head *head_terms)
632 {
633 struct parse_events_term *term;
634
635 list_for_each_entry(term, head_terms, list)
636 if (parse_events__is_name_term(term))
637 return term->val.str;
638
639 return NULL;
640 }
641
parse_events_add_pmu(struct list_head * list,int * idx,char * name,struct list_head * head_config)642 int parse_events_add_pmu(struct list_head *list, int *idx,
643 char *name, struct list_head *head_config)
644 {
645 struct perf_event_attr attr;
646 struct perf_pmu_info info;
647 struct perf_pmu *pmu;
648 struct perf_evsel *evsel;
649
650 pmu = perf_pmu__find(name);
651 if (!pmu)
652 return -EINVAL;
653
654 if (pmu->default_config) {
655 memcpy(&attr, pmu->default_config,
656 sizeof(struct perf_event_attr));
657 } else {
658 memset(&attr, 0, sizeof(attr));
659 }
660
661 if (!head_config) {
662 attr.type = pmu->type;
663 evsel = __add_event(list, idx, &attr, NULL, pmu->cpus);
664 return evsel ? 0 : -ENOMEM;
665 }
666
667 if (perf_pmu__check_alias(pmu, head_config, &info))
668 return -EINVAL;
669
670 /*
671 * Configure hardcoded terms first, no need to check
672 * return value when called with fail == 0 ;)
673 */
674 config_attr(&attr, head_config, 0);
675
676 if (perf_pmu__config(pmu, &attr, head_config))
677 return -EINVAL;
678
679 evsel = __add_event(list, idx, &attr, pmu_event_name(head_config),
680 pmu->cpus);
681 if (evsel) {
682 evsel->unit = info.unit;
683 evsel->scale = info.scale;
684 }
685
686 return evsel ? 0 : -ENOMEM;
687 }
688
parse_events__modifier_group(struct list_head * list,char * event_mod)689 int parse_events__modifier_group(struct list_head *list,
690 char *event_mod)
691 {
692 return parse_events__modifier_event(list, event_mod, true);
693 }
694
parse_events__set_leader(char * name,struct list_head * list)695 void parse_events__set_leader(char *name, struct list_head *list)
696 {
697 struct perf_evsel *leader;
698
699 __perf_evlist__set_leader(list);
700 leader = list_entry(list->next, struct perf_evsel, node);
701 leader->group_name = name ? strdup(name) : NULL;
702 }
703
704 /* list_event is assumed to point to malloc'ed memory */
parse_events_update_lists(struct list_head * list_event,struct list_head * list_all)705 void parse_events_update_lists(struct list_head *list_event,
706 struct list_head *list_all)
707 {
708 /*
709 * Called for single event definition. Update the
710 * 'all event' list, and reinit the 'single event'
711 * list, for next event definition.
712 */
713 list_splice_tail(list_event, list_all);
714 free(list_event);
715 }
716
717 struct event_modifier {
718 int eu;
719 int ek;
720 int eh;
721 int eH;
722 int eG;
723 int precise;
724 int exclude_GH;
725 int sample_read;
726 int pinned;
727 };
728
get_event_modifier(struct event_modifier * mod,char * str,struct perf_evsel * evsel)729 static int get_event_modifier(struct event_modifier *mod, char *str,
730 struct perf_evsel *evsel)
731 {
732 int eu = evsel ? evsel->attr.exclude_user : 0;
733 int ek = evsel ? evsel->attr.exclude_kernel : 0;
734 int eh = evsel ? evsel->attr.exclude_hv : 0;
735 int eH = evsel ? evsel->attr.exclude_host : 0;
736 int eG = evsel ? evsel->attr.exclude_guest : 0;
737 int precise = evsel ? evsel->attr.precise_ip : 0;
738 int sample_read = 0;
739 int pinned = evsel ? evsel->attr.pinned : 0;
740
741 int exclude = eu | ek | eh;
742 int exclude_GH = evsel ? evsel->exclude_GH : 0;
743
744 memset(mod, 0, sizeof(*mod));
745
746 while (*str) {
747 if (*str == 'u') {
748 if (!exclude)
749 exclude = eu = ek = eh = 1;
750 eu = 0;
751 } else if (*str == 'k') {
752 if (!exclude)
753 exclude = eu = ek = eh = 1;
754 ek = 0;
755 } else if (*str == 'h') {
756 if (!exclude)
757 exclude = eu = ek = eh = 1;
758 eh = 0;
759 } else if (*str == 'G') {
760 if (!exclude_GH)
761 exclude_GH = eG = eH = 1;
762 eG = 0;
763 } else if (*str == 'H') {
764 if (!exclude_GH)
765 exclude_GH = eG = eH = 1;
766 eH = 0;
767 } else if (*str == 'p') {
768 precise++;
769 /* use of precise requires exclude_guest */
770 if (!exclude_GH)
771 eG = 1;
772 } else if (*str == 'S') {
773 sample_read = 1;
774 } else if (*str == 'D') {
775 pinned = 1;
776 } else
777 break;
778
779 ++str;
780 }
781
782 /*
783 * precise ip:
784 *
785 * 0 - SAMPLE_IP can have arbitrary skid
786 * 1 - SAMPLE_IP must have constant skid
787 * 2 - SAMPLE_IP requested to have 0 skid
788 * 3 - SAMPLE_IP must have 0 skid
789 *
790 * See also PERF_RECORD_MISC_EXACT_IP
791 */
792 if (precise > 3)
793 return -EINVAL;
794
795 mod->eu = eu;
796 mod->ek = ek;
797 mod->eh = eh;
798 mod->eH = eH;
799 mod->eG = eG;
800 mod->precise = precise;
801 mod->exclude_GH = exclude_GH;
802 mod->sample_read = sample_read;
803 mod->pinned = pinned;
804
805 return 0;
806 }
807
808 /*
809 * Basic modifier sanity check to validate it contains only one
810 * instance of any modifier (apart from 'p') present.
811 */
check_modifier(char * str)812 static int check_modifier(char *str)
813 {
814 char *p = str;
815
816 /* The sizeof includes 0 byte as well. */
817 if (strlen(str) > (sizeof("ukhGHpppSD") - 1))
818 return -1;
819
820 while (*p) {
821 if (*p != 'p' && strchr(p + 1, *p))
822 return -1;
823 p++;
824 }
825
826 return 0;
827 }
828
parse_events__modifier_event(struct list_head * list,char * str,bool add)829 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
830 {
831 struct perf_evsel *evsel;
832 struct event_modifier mod;
833
834 if (str == NULL)
835 return 0;
836
837 if (check_modifier(str))
838 return -EINVAL;
839
840 if (!add && get_event_modifier(&mod, str, NULL))
841 return -EINVAL;
842
843 __evlist__for_each(list, evsel) {
844 if (add && get_event_modifier(&mod, str, evsel))
845 return -EINVAL;
846
847 evsel->attr.exclude_user = mod.eu;
848 evsel->attr.exclude_kernel = mod.ek;
849 evsel->attr.exclude_hv = mod.eh;
850 evsel->attr.precise_ip = mod.precise;
851 evsel->attr.exclude_host = mod.eH;
852 evsel->attr.exclude_guest = mod.eG;
853 evsel->exclude_GH = mod.exclude_GH;
854 evsel->sample_read = mod.sample_read;
855
856 if (perf_evsel__is_group_leader(evsel))
857 evsel->attr.pinned = mod.pinned;
858 }
859
860 return 0;
861 }
862
parse_events_name(struct list_head * list,char * name)863 int parse_events_name(struct list_head *list, char *name)
864 {
865 struct perf_evsel *evsel;
866
867 __evlist__for_each(list, evsel) {
868 if (!evsel->name)
869 evsel->name = strdup(name);
870 }
871
872 return 0;
873 }
874
875 static int
comp_pmu(const void * p1,const void * p2)876 comp_pmu(const void *p1, const void *p2)
877 {
878 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
879 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
880
881 return strcmp(pmu1->symbol, pmu2->symbol);
882 }
883
perf_pmu__parse_cleanup(void)884 static void perf_pmu__parse_cleanup(void)
885 {
886 if (perf_pmu_events_list_num > 0) {
887 struct perf_pmu_event_symbol *p;
888 int i;
889
890 for (i = 0; i < perf_pmu_events_list_num; i++) {
891 p = perf_pmu_events_list + i;
892 free(p->symbol);
893 }
894 free(perf_pmu_events_list);
895 perf_pmu_events_list = NULL;
896 perf_pmu_events_list_num = 0;
897 }
898 }
899
900 #define SET_SYMBOL(str, stype) \
901 do { \
902 p->symbol = str; \
903 if (!p->symbol) \
904 goto err; \
905 p->type = stype; \
906 } while (0)
907
908 /*
909 * Read the pmu events list from sysfs
910 * Save it into perf_pmu_events_list
911 */
perf_pmu__parse_init(void)912 static void perf_pmu__parse_init(void)
913 {
914
915 struct perf_pmu *pmu = NULL;
916 struct perf_pmu_alias *alias;
917 int len = 0;
918
919 pmu = perf_pmu__find("cpu");
920 if ((pmu == NULL) || list_empty(&pmu->aliases)) {
921 perf_pmu_events_list_num = -1;
922 return;
923 }
924 list_for_each_entry(alias, &pmu->aliases, list) {
925 if (strchr(alias->name, '-'))
926 len++;
927 len++;
928 }
929 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
930 if (!perf_pmu_events_list)
931 return;
932 perf_pmu_events_list_num = len;
933
934 len = 0;
935 list_for_each_entry(alias, &pmu->aliases, list) {
936 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
937 char *tmp = strchr(alias->name, '-');
938
939 if (tmp != NULL) {
940 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
941 PMU_EVENT_SYMBOL_PREFIX);
942 p++;
943 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
944 len += 2;
945 } else {
946 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
947 len++;
948 }
949 }
950 qsort(perf_pmu_events_list, len,
951 sizeof(struct perf_pmu_event_symbol), comp_pmu);
952
953 return;
954 err:
955 perf_pmu__parse_cleanup();
956 }
957
958 enum perf_pmu_event_symbol_type
perf_pmu__parse_check(const char * name)959 perf_pmu__parse_check(const char *name)
960 {
961 struct perf_pmu_event_symbol p, *r;
962
963 /* scan kernel pmu events from sysfs if needed */
964 if (perf_pmu_events_list_num == 0)
965 perf_pmu__parse_init();
966 /*
967 * name "cpu" could be prefix of cpu-cycles or cpu// events.
968 * cpu-cycles has been handled by hardcode.
969 * So it must be cpu// events, not kernel pmu event.
970 */
971 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
972 return PMU_EVENT_SYMBOL_ERR;
973
974 p.symbol = strdup(name);
975 r = bsearch(&p, perf_pmu_events_list,
976 (size_t) perf_pmu_events_list_num,
977 sizeof(struct perf_pmu_event_symbol), comp_pmu);
978 free(p.symbol);
979 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
980 }
981
parse_events__scanner(const char * str,void * data,int start_token)982 static int parse_events__scanner(const char *str, void *data, int start_token)
983 {
984 YY_BUFFER_STATE buffer;
985 void *scanner;
986 int ret;
987
988 ret = parse_events_lex_init_extra(start_token, &scanner);
989 if (ret)
990 return ret;
991
992 buffer = parse_events__scan_string(str, scanner);
993
994 #ifdef PARSER_DEBUG
995 parse_events_debug = 1;
996 #endif
997 ret = parse_events_parse(data, scanner);
998
999 parse_events__flush_buffer(buffer, scanner);
1000 parse_events__delete_buffer(buffer, scanner);
1001 parse_events_lex_destroy(scanner);
1002 return ret;
1003 }
1004
1005 /*
1006 * parse event config string, return a list of event terms.
1007 */
parse_events_terms(struct list_head * terms,const char * str)1008 int parse_events_terms(struct list_head *terms, const char *str)
1009 {
1010 struct parse_events_terms data = {
1011 .terms = NULL,
1012 };
1013 int ret;
1014
1015 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1016 if (!ret) {
1017 list_splice(data.terms, terms);
1018 zfree(&data.terms);
1019 return 0;
1020 }
1021
1022 if (data.terms)
1023 parse_events__free_terms(data.terms);
1024 return ret;
1025 }
1026
parse_events(struct perf_evlist * evlist,const char * str)1027 int parse_events(struct perf_evlist *evlist, const char *str)
1028 {
1029 struct parse_events_evlist data = {
1030 .list = LIST_HEAD_INIT(data.list),
1031 .idx = evlist->nr_entries,
1032 };
1033 int ret;
1034
1035 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1036 perf_pmu__parse_cleanup();
1037 if (!ret) {
1038 int entries = data.idx - evlist->nr_entries;
1039 perf_evlist__splice_list_tail(evlist, &data.list, entries);
1040 evlist->nr_groups += data.nr_groups;
1041 return 0;
1042 }
1043
1044 /*
1045 * There are 2 users - builtin-record and builtin-test objects.
1046 * Both call perf_evlist__delete in case of error, so we dont
1047 * need to bother.
1048 */
1049 return ret;
1050 }
1051
parse_events_option(const struct option * opt,const char * str,int unset __maybe_unused)1052 int parse_events_option(const struct option *opt, const char *str,
1053 int unset __maybe_unused)
1054 {
1055 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1056 int ret = parse_events(evlist, str);
1057
1058 if (ret) {
1059 fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
1060 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1061 }
1062 return ret;
1063 }
1064
parse_filter(const struct option * opt,const char * str,int unset __maybe_unused)1065 int parse_filter(const struct option *opt, const char *str,
1066 int unset __maybe_unused)
1067 {
1068 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1069 struct perf_evsel *last = NULL;
1070
1071 if (evlist->nr_entries > 0)
1072 last = perf_evlist__last(evlist);
1073
1074 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
1075 fprintf(stderr,
1076 "--filter option should follow a -e tracepoint option\n");
1077 return -1;
1078 }
1079
1080 last->filter = strdup(str);
1081 if (last->filter == NULL) {
1082 fprintf(stderr, "not enough memory to hold filter string\n");
1083 return -1;
1084 }
1085
1086 return 0;
1087 }
1088
1089 static const char * const event_type_descriptors[] = {
1090 "Hardware event",
1091 "Software event",
1092 "Tracepoint event",
1093 "Hardware cache event",
1094 "Raw hardware event descriptor",
1095 "Hardware breakpoint",
1096 };
1097
1098 /*
1099 * Print the events from <debugfs_mount_point>/tracing/events
1100 */
1101
print_tracepoint_events(const char * subsys_glob,const char * event_glob,bool name_only)1102 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1103 bool name_only)
1104 {
1105 DIR *sys_dir, *evt_dir;
1106 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1107 char evt_path[MAXPATHLEN];
1108 char dir_path[MAXPATHLEN];
1109 char sbuf[STRERR_BUFSIZE];
1110
1111 if (debugfs_valid_mountpoint(tracing_events_path)) {
1112 printf(" [ Tracepoints not available: %s ]\n",
1113 strerror_r(errno, sbuf, sizeof(sbuf)));
1114 return;
1115 }
1116
1117 sys_dir = opendir(tracing_events_path);
1118 if (!sys_dir)
1119 return;
1120
1121 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1122 if (subsys_glob != NULL &&
1123 !strglobmatch(sys_dirent.d_name, subsys_glob))
1124 continue;
1125
1126 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1127 sys_dirent.d_name);
1128 evt_dir = opendir(dir_path);
1129 if (!evt_dir)
1130 continue;
1131
1132 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1133 if (event_glob != NULL &&
1134 !strglobmatch(evt_dirent.d_name, event_glob))
1135 continue;
1136
1137 if (name_only) {
1138 printf("%s:%s ", sys_dirent.d_name, evt_dirent.d_name);
1139 continue;
1140 }
1141
1142 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1143 sys_dirent.d_name, evt_dirent.d_name);
1144 printf(" %-50s [%s]\n", evt_path,
1145 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1146 }
1147 closedir(evt_dir);
1148 }
1149 closedir(sys_dir);
1150 }
1151
1152 /*
1153 * Check whether event is in <debugfs_mount_point>/tracing/events
1154 */
1155
is_valid_tracepoint(const char * event_string)1156 int is_valid_tracepoint(const char *event_string)
1157 {
1158 DIR *sys_dir, *evt_dir;
1159 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1160 char evt_path[MAXPATHLEN];
1161 char dir_path[MAXPATHLEN];
1162
1163 if (debugfs_valid_mountpoint(tracing_events_path))
1164 return 0;
1165
1166 sys_dir = opendir(tracing_events_path);
1167 if (!sys_dir)
1168 return 0;
1169
1170 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1171
1172 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1173 sys_dirent.d_name);
1174 evt_dir = opendir(dir_path);
1175 if (!evt_dir)
1176 continue;
1177
1178 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1179 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1180 sys_dirent.d_name, evt_dirent.d_name);
1181 if (!strcmp(evt_path, event_string)) {
1182 closedir(evt_dir);
1183 closedir(sys_dir);
1184 return 1;
1185 }
1186 }
1187 closedir(evt_dir);
1188 }
1189 closedir(sys_dir);
1190 return 0;
1191 }
1192
is_event_supported(u8 type,unsigned config)1193 static bool is_event_supported(u8 type, unsigned config)
1194 {
1195 bool ret = true;
1196 int open_return;
1197 struct perf_evsel *evsel;
1198 struct perf_event_attr attr = {
1199 .type = type,
1200 .config = config,
1201 .disabled = 1,
1202 };
1203 struct {
1204 struct thread_map map;
1205 int threads[1];
1206 } tmap = {
1207 .map.nr = 1,
1208 .threads = { 0 },
1209 };
1210
1211 evsel = perf_evsel__new(&attr);
1212 if (evsel) {
1213 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1214 ret = open_return >= 0;
1215
1216 if (open_return == -EACCES) {
1217 /*
1218 * This happens if the paranoid value
1219 * /proc/sys/kernel/perf_event_paranoid is set to 2
1220 * Re-run with exclude_kernel set; we don't do that
1221 * by default as some ARM machines do not support it.
1222 *
1223 */
1224 evsel->attr.exclude_kernel = 1;
1225 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1226 }
1227 perf_evsel__delete(evsel);
1228 }
1229
1230 return ret;
1231 }
1232
__print_events_type(u8 type,struct event_symbol * syms,unsigned max)1233 static void __print_events_type(u8 type, struct event_symbol *syms,
1234 unsigned max)
1235 {
1236 char name[64];
1237 unsigned i;
1238
1239 for (i = 0; i < max ; i++, syms++) {
1240 if (!is_event_supported(type, i))
1241 continue;
1242
1243 if (strlen(syms->alias))
1244 snprintf(name, sizeof(name), "%s OR %s",
1245 syms->symbol, syms->alias);
1246 else
1247 snprintf(name, sizeof(name), "%s", syms->symbol);
1248
1249 printf(" %-50s [%s]\n", name, event_type_descriptors[type]);
1250 }
1251 }
1252
print_events_type(u8 type)1253 void print_events_type(u8 type)
1254 {
1255 if (type == PERF_TYPE_SOFTWARE)
1256 __print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX);
1257 else
1258 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
1259 }
1260
print_hwcache_events(const char * event_glob,bool name_only)1261 int print_hwcache_events(const char *event_glob, bool name_only)
1262 {
1263 unsigned int type, op, i, printed = 0;
1264 char name[64];
1265
1266 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1267 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1268 /* skip invalid cache type */
1269 if (!perf_evsel__is_cache_op_valid(type, op))
1270 continue;
1271
1272 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1273 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
1274 name, sizeof(name));
1275 if (event_glob != NULL && !strglobmatch(name, event_glob))
1276 continue;
1277
1278 if (!is_event_supported(PERF_TYPE_HW_CACHE,
1279 type | (op << 8) | (i << 16)))
1280 continue;
1281
1282 if (name_only)
1283 printf("%s ", name);
1284 else
1285 printf(" %-50s [%s]\n", name,
1286 event_type_descriptors[PERF_TYPE_HW_CACHE]);
1287 ++printed;
1288 }
1289 }
1290 }
1291
1292 if (printed)
1293 printf("\n");
1294 return printed;
1295 }
1296
print_symbol_events(const char * event_glob,unsigned type,struct event_symbol * syms,unsigned max,bool name_only)1297 static void print_symbol_events(const char *event_glob, unsigned type,
1298 struct event_symbol *syms, unsigned max,
1299 bool name_only)
1300 {
1301 unsigned i, printed = 0;
1302 char name[MAX_NAME_LEN];
1303
1304 for (i = 0; i < max; i++, syms++) {
1305
1306 if (event_glob != NULL &&
1307 !(strglobmatch(syms->symbol, event_glob) ||
1308 (syms->alias && strglobmatch(syms->alias, event_glob))))
1309 continue;
1310
1311 if (!is_event_supported(type, i))
1312 continue;
1313
1314 if (name_only) {
1315 printf("%s ", syms->symbol);
1316 continue;
1317 }
1318
1319 if (strlen(syms->alias))
1320 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1321 else
1322 strncpy(name, syms->symbol, MAX_NAME_LEN);
1323
1324 printf(" %-50s [%s]\n", name, event_type_descriptors[type]);
1325
1326 printed++;
1327 }
1328
1329 if (printed)
1330 printf("\n");
1331 }
1332
1333 /*
1334 * Print the help text for the event symbols:
1335 */
print_events(const char * event_glob,bool name_only)1336 void print_events(const char *event_glob, bool name_only)
1337 {
1338 if (!name_only) {
1339 printf("\n");
1340 printf("List of pre-defined events (to be used in -e):\n");
1341 }
1342
1343 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
1344 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
1345
1346 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
1347 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
1348
1349 print_hwcache_events(event_glob, name_only);
1350
1351 print_pmu_events(event_glob, name_only);
1352
1353 if (event_glob != NULL)
1354 return;
1355
1356 if (!name_only) {
1357 printf(" %-50s [%s]\n",
1358 "rNNN",
1359 event_type_descriptors[PERF_TYPE_RAW]);
1360 printf(" %-50s [%s]\n",
1361 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1362 event_type_descriptors[PERF_TYPE_RAW]);
1363 printf(" (see 'man perf-list' on how to encode it)\n");
1364 printf("\n");
1365
1366 printf(" %-50s [%s]\n",
1367 "mem:<addr>[:access]",
1368 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1369 printf("\n");
1370 }
1371
1372 print_tracepoint_events(NULL, NULL, name_only);
1373 }
1374
parse_events__is_hardcoded_term(struct parse_events_term * term)1375 int parse_events__is_hardcoded_term(struct parse_events_term *term)
1376 {
1377 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1378 }
1379
new_term(struct parse_events_term ** _term,int type_val,int type_term,char * config,char * str,u64 num)1380 static int new_term(struct parse_events_term **_term, int type_val,
1381 int type_term, char *config,
1382 char *str, u64 num)
1383 {
1384 struct parse_events_term *term;
1385
1386 term = zalloc(sizeof(*term));
1387 if (!term)
1388 return -ENOMEM;
1389
1390 INIT_LIST_HEAD(&term->list);
1391 term->type_val = type_val;
1392 term->type_term = type_term;
1393 term->config = config;
1394
1395 switch (type_val) {
1396 case PARSE_EVENTS__TERM_TYPE_NUM:
1397 term->val.num = num;
1398 break;
1399 case PARSE_EVENTS__TERM_TYPE_STR:
1400 term->val.str = str;
1401 break;
1402 default:
1403 free(term);
1404 return -EINVAL;
1405 }
1406
1407 *_term = term;
1408 return 0;
1409 }
1410
parse_events_term__num(struct parse_events_term ** term,int type_term,char * config,u64 num)1411 int parse_events_term__num(struct parse_events_term **term,
1412 int type_term, char *config, u64 num)
1413 {
1414 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1415 config, NULL, num);
1416 }
1417
parse_events_term__str(struct parse_events_term ** term,int type_term,char * config,char * str)1418 int parse_events_term__str(struct parse_events_term **term,
1419 int type_term, char *config, char *str)
1420 {
1421 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1422 config, str, 0);
1423 }
1424
parse_events_term__sym_hw(struct parse_events_term ** term,char * config,unsigned idx)1425 int parse_events_term__sym_hw(struct parse_events_term **term,
1426 char *config, unsigned idx)
1427 {
1428 struct event_symbol *sym;
1429
1430 BUG_ON(idx >= PERF_COUNT_HW_MAX);
1431 sym = &event_symbols_hw[idx];
1432
1433 if (config)
1434 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1435 PARSE_EVENTS__TERM_TYPE_USER, config,
1436 (char *) sym->symbol, 0);
1437 else
1438 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1439 PARSE_EVENTS__TERM_TYPE_USER,
1440 (char *) "event", (char *) sym->symbol, 0);
1441 }
1442
parse_events_term__clone(struct parse_events_term ** new,struct parse_events_term * term)1443 int parse_events_term__clone(struct parse_events_term **new,
1444 struct parse_events_term *term)
1445 {
1446 return new_term(new, term->type_val, term->type_term, term->config,
1447 term->val.str, term->val.num);
1448 }
1449
parse_events__free_terms(struct list_head * terms)1450 void parse_events__free_terms(struct list_head *terms)
1451 {
1452 struct parse_events_term *term, *h;
1453
1454 list_for_each_entry_safe(term, h, terms, list)
1455 free(term);
1456 }
1457