xref: /openbmc/linux/tools/perf/util/parse-events.c (revision c819e2cf)
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 
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 
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 	sys_dir = opendir(tracing_events_path);
179 	if (!sys_dir)
180 		return NULL;
181 
182 	for_each_subsystem(sys_dir, sys_dirent, sys_next) {
183 
184 		snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
185 			 sys_dirent.d_name);
186 		evt_dir = opendir(dir_path);
187 		if (!evt_dir)
188 			continue;
189 
190 		for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
191 
192 			snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
193 				 evt_dirent.d_name);
194 			fd = open(evt_path, O_RDONLY);
195 			if (fd < 0)
196 				continue;
197 			if (read(fd, id_buf, sizeof(id_buf)) < 0) {
198 				close(fd);
199 				continue;
200 			}
201 			close(fd);
202 			id = atoll(id_buf);
203 			if (id == config) {
204 				closedir(evt_dir);
205 				closedir(sys_dir);
206 				path = zalloc(sizeof(*path));
207 				path->system = malloc(MAX_EVENT_LENGTH);
208 				if (!path->system) {
209 					free(path);
210 					return NULL;
211 				}
212 				path->name = malloc(MAX_EVENT_LENGTH);
213 				if (!path->name) {
214 					zfree(&path->system);
215 					free(path);
216 					return NULL;
217 				}
218 				strncpy(path->system, sys_dirent.d_name,
219 					MAX_EVENT_LENGTH);
220 				strncpy(path->name, evt_dirent.d_name,
221 					MAX_EVENT_LENGTH);
222 				return path;
223 			}
224 		}
225 		closedir(evt_dir);
226 	}
227 
228 	closedir(sys_dir);
229 	return NULL;
230 }
231 
232 struct tracepoint_path *tracepoint_name_to_path(const char *name)
233 {
234 	struct tracepoint_path *path = zalloc(sizeof(*path));
235 	char *str = strchr(name, ':');
236 
237 	if (path == NULL || str == NULL) {
238 		free(path);
239 		return NULL;
240 	}
241 
242 	path->system = strndup(name, str - name);
243 	path->name = strdup(str+1);
244 
245 	if (path->system == NULL || path->name == NULL) {
246 		zfree(&path->system);
247 		zfree(&path->name);
248 		free(path);
249 		path = NULL;
250 	}
251 
252 	return path;
253 }
254 
255 const char *event_type(int type)
256 {
257 	switch (type) {
258 	case PERF_TYPE_HARDWARE:
259 		return "hardware";
260 
261 	case PERF_TYPE_SOFTWARE:
262 		return "software";
263 
264 	case PERF_TYPE_TRACEPOINT:
265 		return "tracepoint";
266 
267 	case PERF_TYPE_HW_CACHE:
268 		return "hardware-cache";
269 
270 	default:
271 		break;
272 	}
273 
274 	return "unknown";
275 }
276 
277 
278 
279 static struct perf_evsel *
280 __add_event(struct list_head *list, int *idx,
281 	    struct perf_event_attr *attr,
282 	    char *name, struct cpu_map *cpus)
283 {
284 	struct perf_evsel *evsel;
285 
286 	event_attr_init(attr);
287 
288 	evsel = perf_evsel__new_idx(attr, (*idx)++);
289 	if (!evsel)
290 		return NULL;
291 
292 	evsel->cpus = cpus;
293 	if (name)
294 		evsel->name = strdup(name);
295 	list_add_tail(&evsel->node, list);
296 	return evsel;
297 }
298 
299 static int add_event(struct list_head *list, int *idx,
300 		     struct perf_event_attr *attr, char *name)
301 {
302 	return __add_event(list, idx, attr, name, NULL) ? 0 : -ENOMEM;
303 }
304 
305 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
306 {
307 	int i, j;
308 	int n, longest = -1;
309 
310 	for (i = 0; i < size; i++) {
311 		for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
312 			n = strlen(names[i][j]);
313 			if (n > longest && !strncasecmp(str, names[i][j], n))
314 				longest = n;
315 		}
316 		if (longest > 0)
317 			return i;
318 	}
319 
320 	return -1;
321 }
322 
323 int parse_events_add_cache(struct list_head *list, int *idx,
324 			   char *type, char *op_result1, char *op_result2)
325 {
326 	struct perf_event_attr attr;
327 	char name[MAX_NAME_LEN];
328 	int cache_type = -1, cache_op = -1, cache_result = -1;
329 	char *op_result[2] = { op_result1, op_result2 };
330 	int i, n;
331 
332 	/*
333 	 * No fallback - if we cannot get a clear cache type
334 	 * then bail out:
335 	 */
336 	cache_type = parse_aliases(type, perf_evsel__hw_cache,
337 				   PERF_COUNT_HW_CACHE_MAX);
338 	if (cache_type == -1)
339 		return -EINVAL;
340 
341 	n = snprintf(name, MAX_NAME_LEN, "%s", type);
342 
343 	for (i = 0; (i < 2) && (op_result[i]); i++) {
344 		char *str = op_result[i];
345 
346 		n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
347 
348 		if (cache_op == -1) {
349 			cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
350 						 PERF_COUNT_HW_CACHE_OP_MAX);
351 			if (cache_op >= 0) {
352 				if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
353 					return -EINVAL;
354 				continue;
355 			}
356 		}
357 
358 		if (cache_result == -1) {
359 			cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
360 						     PERF_COUNT_HW_CACHE_RESULT_MAX);
361 			if (cache_result >= 0)
362 				continue;
363 		}
364 	}
365 
366 	/*
367 	 * Fall back to reads:
368 	 */
369 	if (cache_op == -1)
370 		cache_op = PERF_COUNT_HW_CACHE_OP_READ;
371 
372 	/*
373 	 * Fall back to accesses:
374 	 */
375 	if (cache_result == -1)
376 		cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
377 
378 	memset(&attr, 0, sizeof(attr));
379 	attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
380 	attr.type = PERF_TYPE_HW_CACHE;
381 	return add_event(list, idx, &attr, name);
382 }
383 
384 static int add_tracepoint(struct list_head *list, int *idx,
385 			  char *sys_name, char *evt_name)
386 {
387 	struct perf_evsel *evsel;
388 
389 	evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
390 	if (!evsel)
391 		return -ENOMEM;
392 
393 	list_add_tail(&evsel->node, list);
394 
395 	return 0;
396 }
397 
398 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
399 				      char *sys_name, char *evt_name)
400 {
401 	char evt_path[MAXPATHLEN];
402 	struct dirent *evt_ent;
403 	DIR *evt_dir;
404 	int ret = 0;
405 
406 	snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
407 	evt_dir = opendir(evt_path);
408 	if (!evt_dir) {
409 		perror("Can't open event dir");
410 		return -1;
411 	}
412 
413 	while (!ret && (evt_ent = readdir(evt_dir))) {
414 		if (!strcmp(evt_ent->d_name, ".")
415 		    || !strcmp(evt_ent->d_name, "..")
416 		    || !strcmp(evt_ent->d_name, "enable")
417 		    || !strcmp(evt_ent->d_name, "filter"))
418 			continue;
419 
420 		if (!strglobmatch(evt_ent->d_name, evt_name))
421 			continue;
422 
423 		ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
424 	}
425 
426 	closedir(evt_dir);
427 	return ret;
428 }
429 
430 static int add_tracepoint_event(struct list_head *list, int *idx,
431 				char *sys_name, char *evt_name)
432 {
433 	return strpbrk(evt_name, "*?") ?
434 	       add_tracepoint_multi_event(list, idx, sys_name, evt_name) :
435 	       add_tracepoint(list, idx, sys_name, evt_name);
436 }
437 
438 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
439 				    char *sys_name, char *evt_name)
440 {
441 	struct dirent *events_ent;
442 	DIR *events_dir;
443 	int ret = 0;
444 
445 	events_dir = opendir(tracing_events_path);
446 	if (!events_dir) {
447 		perror("Can't open event dir");
448 		return -1;
449 	}
450 
451 	while (!ret && (events_ent = readdir(events_dir))) {
452 		if (!strcmp(events_ent->d_name, ".")
453 		    || !strcmp(events_ent->d_name, "..")
454 		    || !strcmp(events_ent->d_name, "enable")
455 		    || !strcmp(events_ent->d_name, "header_event")
456 		    || !strcmp(events_ent->d_name, "header_page"))
457 			continue;
458 
459 		if (!strglobmatch(events_ent->d_name, sys_name))
460 			continue;
461 
462 		ret = add_tracepoint_event(list, idx, events_ent->d_name,
463 					   evt_name);
464 	}
465 
466 	closedir(events_dir);
467 	return ret;
468 }
469 
470 int parse_events_add_tracepoint(struct list_head *list, int *idx,
471 				char *sys, char *event)
472 {
473 	if (strpbrk(sys, "*?"))
474 		return add_tracepoint_multi_sys(list, idx, sys, event);
475 	else
476 		return add_tracepoint_event(list, idx, sys, event);
477 }
478 
479 static int
480 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
481 {
482 	int i;
483 
484 	for (i = 0; i < 3; i++) {
485 		if (!type || !type[i])
486 			break;
487 
488 #define CHECK_SET_TYPE(bit)		\
489 do {					\
490 	if (attr->bp_type & bit)	\
491 		return -EINVAL;		\
492 	else				\
493 		attr->bp_type |= bit;	\
494 } while (0)
495 
496 		switch (type[i]) {
497 		case 'r':
498 			CHECK_SET_TYPE(HW_BREAKPOINT_R);
499 			break;
500 		case 'w':
501 			CHECK_SET_TYPE(HW_BREAKPOINT_W);
502 			break;
503 		case 'x':
504 			CHECK_SET_TYPE(HW_BREAKPOINT_X);
505 			break;
506 		default:
507 			return -EINVAL;
508 		}
509 	}
510 
511 #undef CHECK_SET_TYPE
512 
513 	if (!attr->bp_type) /* Default */
514 		attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
515 
516 	return 0;
517 }
518 
519 int parse_events_add_breakpoint(struct list_head *list, int *idx,
520 				void *ptr, char *type, u64 len)
521 {
522 	struct perf_event_attr attr;
523 
524 	memset(&attr, 0, sizeof(attr));
525 	attr.bp_addr = (unsigned long) ptr;
526 
527 	if (parse_breakpoint_type(type, &attr))
528 		return -EINVAL;
529 
530 	/* Provide some defaults if len is not specified */
531 	if (!len) {
532 		if (attr.bp_type == HW_BREAKPOINT_X)
533 			len = sizeof(long);
534 		else
535 			len = HW_BREAKPOINT_LEN_4;
536 	}
537 
538 	attr.bp_len = len;
539 
540 	attr.type = PERF_TYPE_BREAKPOINT;
541 	attr.sample_period = 1;
542 
543 	return add_event(list, idx, &attr, NULL);
544 }
545 
546 static int config_term(struct perf_event_attr *attr,
547 		       struct parse_events_term *term)
548 {
549 #define CHECK_TYPE_VAL(type)					\
550 do {								\
551 	if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val)	\
552 		return -EINVAL;					\
553 } while (0)
554 
555 	switch (term->type_term) {
556 	case PARSE_EVENTS__TERM_TYPE_CONFIG:
557 		CHECK_TYPE_VAL(NUM);
558 		attr->config = term->val.num;
559 		break;
560 	case PARSE_EVENTS__TERM_TYPE_CONFIG1:
561 		CHECK_TYPE_VAL(NUM);
562 		attr->config1 = term->val.num;
563 		break;
564 	case PARSE_EVENTS__TERM_TYPE_CONFIG2:
565 		CHECK_TYPE_VAL(NUM);
566 		attr->config2 = term->val.num;
567 		break;
568 	case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
569 		CHECK_TYPE_VAL(NUM);
570 		attr->sample_period = term->val.num;
571 		break;
572 	case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
573 		/*
574 		 * TODO uncomment when the field is available
575 		 * attr->branch_sample_type = term->val.num;
576 		 */
577 		break;
578 	case PARSE_EVENTS__TERM_TYPE_NAME:
579 		CHECK_TYPE_VAL(STR);
580 		break;
581 	default:
582 		return -EINVAL;
583 	}
584 
585 	return 0;
586 #undef CHECK_TYPE_VAL
587 }
588 
589 static int config_attr(struct perf_event_attr *attr,
590 		       struct list_head *head, int fail)
591 {
592 	struct parse_events_term *term;
593 
594 	list_for_each_entry(term, head, list)
595 		if (config_term(attr, term) && fail)
596 			return -EINVAL;
597 
598 	return 0;
599 }
600 
601 int parse_events_add_numeric(struct list_head *list, int *idx,
602 			     u32 type, u64 config,
603 			     struct list_head *head_config)
604 {
605 	struct perf_event_attr attr;
606 
607 	memset(&attr, 0, sizeof(attr));
608 	attr.type = type;
609 	attr.config = config;
610 
611 	if (head_config &&
612 	    config_attr(&attr, head_config, 1))
613 		return -EINVAL;
614 
615 	return add_event(list, idx, &attr, NULL);
616 }
617 
618 static int parse_events__is_name_term(struct parse_events_term *term)
619 {
620 	return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
621 }
622 
623 static char *pmu_event_name(struct list_head *head_terms)
624 {
625 	struct parse_events_term *term;
626 
627 	list_for_each_entry(term, head_terms, list)
628 		if (parse_events__is_name_term(term))
629 			return term->val.str;
630 
631 	return NULL;
632 }
633 
634 int parse_events_add_pmu(struct list_head *list, int *idx,
635 			 char *name, struct list_head *head_config)
636 {
637 	struct perf_event_attr attr;
638 	struct perf_pmu_info info;
639 	struct perf_pmu *pmu;
640 	struct perf_evsel *evsel;
641 
642 	pmu = perf_pmu__find(name);
643 	if (!pmu)
644 		return -EINVAL;
645 
646 	if (pmu->default_config) {
647 		memcpy(&attr, pmu->default_config,
648 		       sizeof(struct perf_event_attr));
649 	} else {
650 		memset(&attr, 0, sizeof(attr));
651 	}
652 
653 	if (!head_config) {
654 		attr.type = pmu->type;
655 		evsel = __add_event(list, idx, &attr, NULL, pmu->cpus);
656 		return evsel ? 0 : -ENOMEM;
657 	}
658 
659 	if (perf_pmu__check_alias(pmu, head_config, &info))
660 		return -EINVAL;
661 
662 	/*
663 	 * Configure hardcoded terms first, no need to check
664 	 * return value when called with fail == 0 ;)
665 	 */
666 	config_attr(&attr, head_config, 0);
667 
668 	if (perf_pmu__config(pmu, &attr, head_config))
669 		return -EINVAL;
670 
671 	evsel = __add_event(list, idx, &attr, pmu_event_name(head_config),
672 			    pmu->cpus);
673 	if (evsel) {
674 		evsel->unit = info.unit;
675 		evsel->scale = info.scale;
676 		evsel->per_pkg = info.per_pkg;
677 		evsel->snapshot = info.snapshot;
678 	}
679 
680 	return evsel ? 0 : -ENOMEM;
681 }
682 
683 int parse_events__modifier_group(struct list_head *list,
684 				 char *event_mod)
685 {
686 	return parse_events__modifier_event(list, event_mod, true);
687 }
688 
689 void parse_events__set_leader(char *name, struct list_head *list)
690 {
691 	struct perf_evsel *leader;
692 
693 	__perf_evlist__set_leader(list);
694 	leader = list_entry(list->next, struct perf_evsel, node);
695 	leader->group_name = name ? strdup(name) : NULL;
696 }
697 
698 /* list_event is assumed to point to malloc'ed memory */
699 void parse_events_update_lists(struct list_head *list_event,
700 			       struct list_head *list_all)
701 {
702 	/*
703 	 * Called for single event definition. Update the
704 	 * 'all event' list, and reinit the 'single event'
705 	 * list, for next event definition.
706 	 */
707 	list_splice_tail(list_event, list_all);
708 	free(list_event);
709 }
710 
711 struct event_modifier {
712 	int eu;
713 	int ek;
714 	int eh;
715 	int eH;
716 	int eG;
717 	int precise;
718 	int exclude_GH;
719 	int sample_read;
720 	int pinned;
721 };
722 
723 static int get_event_modifier(struct event_modifier *mod, char *str,
724 			       struct perf_evsel *evsel)
725 {
726 	int eu = evsel ? evsel->attr.exclude_user : 0;
727 	int ek = evsel ? evsel->attr.exclude_kernel : 0;
728 	int eh = evsel ? evsel->attr.exclude_hv : 0;
729 	int eH = evsel ? evsel->attr.exclude_host : 0;
730 	int eG = evsel ? evsel->attr.exclude_guest : 0;
731 	int precise = evsel ? evsel->attr.precise_ip : 0;
732 	int sample_read = 0;
733 	int pinned = evsel ? evsel->attr.pinned : 0;
734 
735 	int exclude = eu | ek | eh;
736 	int exclude_GH = evsel ? evsel->exclude_GH : 0;
737 
738 	memset(mod, 0, sizeof(*mod));
739 
740 	while (*str) {
741 		if (*str == 'u') {
742 			if (!exclude)
743 				exclude = eu = ek = eh = 1;
744 			eu = 0;
745 		} else if (*str == 'k') {
746 			if (!exclude)
747 				exclude = eu = ek = eh = 1;
748 			ek = 0;
749 		} else if (*str == 'h') {
750 			if (!exclude)
751 				exclude = eu = ek = eh = 1;
752 			eh = 0;
753 		} else if (*str == 'G') {
754 			if (!exclude_GH)
755 				exclude_GH = eG = eH = 1;
756 			eG = 0;
757 		} else if (*str == 'H') {
758 			if (!exclude_GH)
759 				exclude_GH = eG = eH = 1;
760 			eH = 0;
761 		} else if (*str == 'p') {
762 			precise++;
763 			/* use of precise requires exclude_guest */
764 			if (!exclude_GH)
765 				eG = 1;
766 		} else if (*str == 'S') {
767 			sample_read = 1;
768 		} else if (*str == 'D') {
769 			pinned = 1;
770 		} else
771 			break;
772 
773 		++str;
774 	}
775 
776 	/*
777 	 * precise ip:
778 	 *
779 	 *  0 - SAMPLE_IP can have arbitrary skid
780 	 *  1 - SAMPLE_IP must have constant skid
781 	 *  2 - SAMPLE_IP requested to have 0 skid
782 	 *  3 - SAMPLE_IP must have 0 skid
783 	 *
784 	 *  See also PERF_RECORD_MISC_EXACT_IP
785 	 */
786 	if (precise > 3)
787 		return -EINVAL;
788 
789 	mod->eu = eu;
790 	mod->ek = ek;
791 	mod->eh = eh;
792 	mod->eH = eH;
793 	mod->eG = eG;
794 	mod->precise = precise;
795 	mod->exclude_GH = exclude_GH;
796 	mod->sample_read = sample_read;
797 	mod->pinned = pinned;
798 
799 	return 0;
800 }
801 
802 /*
803  * Basic modifier sanity check to validate it contains only one
804  * instance of any modifier (apart from 'p') present.
805  */
806 static int check_modifier(char *str)
807 {
808 	char *p = str;
809 
810 	/* The sizeof includes 0 byte as well. */
811 	if (strlen(str) > (sizeof("ukhGHpppSD") - 1))
812 		return -1;
813 
814 	while (*p) {
815 		if (*p != 'p' && strchr(p + 1, *p))
816 			return -1;
817 		p++;
818 	}
819 
820 	return 0;
821 }
822 
823 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
824 {
825 	struct perf_evsel *evsel;
826 	struct event_modifier mod;
827 
828 	if (str == NULL)
829 		return 0;
830 
831 	if (check_modifier(str))
832 		return -EINVAL;
833 
834 	if (!add && get_event_modifier(&mod, str, NULL))
835 		return -EINVAL;
836 
837 	__evlist__for_each(list, evsel) {
838 		if (add && get_event_modifier(&mod, str, evsel))
839 			return -EINVAL;
840 
841 		evsel->attr.exclude_user   = mod.eu;
842 		evsel->attr.exclude_kernel = mod.ek;
843 		evsel->attr.exclude_hv     = mod.eh;
844 		evsel->attr.precise_ip     = mod.precise;
845 		evsel->attr.exclude_host   = mod.eH;
846 		evsel->attr.exclude_guest  = mod.eG;
847 		evsel->exclude_GH          = mod.exclude_GH;
848 		evsel->sample_read         = mod.sample_read;
849 
850 		if (perf_evsel__is_group_leader(evsel))
851 			evsel->attr.pinned = mod.pinned;
852 	}
853 
854 	return 0;
855 }
856 
857 int parse_events_name(struct list_head *list, char *name)
858 {
859 	struct perf_evsel *evsel;
860 
861 	__evlist__for_each(list, evsel) {
862 		if (!evsel->name)
863 			evsel->name = strdup(name);
864 	}
865 
866 	return 0;
867 }
868 
869 static int
870 comp_pmu(const void *p1, const void *p2)
871 {
872 	struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
873 	struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
874 
875 	return strcmp(pmu1->symbol, pmu2->symbol);
876 }
877 
878 static void perf_pmu__parse_cleanup(void)
879 {
880 	if (perf_pmu_events_list_num > 0) {
881 		struct perf_pmu_event_symbol *p;
882 		int i;
883 
884 		for (i = 0; i < perf_pmu_events_list_num; i++) {
885 			p = perf_pmu_events_list + i;
886 			free(p->symbol);
887 		}
888 		free(perf_pmu_events_list);
889 		perf_pmu_events_list = NULL;
890 		perf_pmu_events_list_num = 0;
891 	}
892 }
893 
894 #define SET_SYMBOL(str, stype)		\
895 do {					\
896 	p->symbol = str;		\
897 	if (!p->symbol)			\
898 		goto err;		\
899 	p->type = stype;		\
900 } while (0)
901 
902 /*
903  * Read the pmu events list from sysfs
904  * Save it into perf_pmu_events_list
905  */
906 static void perf_pmu__parse_init(void)
907 {
908 
909 	struct perf_pmu *pmu = NULL;
910 	struct perf_pmu_alias *alias;
911 	int len = 0;
912 
913 	pmu = perf_pmu__find("cpu");
914 	if ((pmu == NULL) || list_empty(&pmu->aliases)) {
915 		perf_pmu_events_list_num = -1;
916 		return;
917 	}
918 	list_for_each_entry(alias, &pmu->aliases, list) {
919 		if (strchr(alias->name, '-'))
920 			len++;
921 		len++;
922 	}
923 	perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
924 	if (!perf_pmu_events_list)
925 		return;
926 	perf_pmu_events_list_num = len;
927 
928 	len = 0;
929 	list_for_each_entry(alias, &pmu->aliases, list) {
930 		struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
931 		char *tmp = strchr(alias->name, '-');
932 
933 		if (tmp != NULL) {
934 			SET_SYMBOL(strndup(alias->name, tmp - alias->name),
935 					PMU_EVENT_SYMBOL_PREFIX);
936 			p++;
937 			SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
938 			len += 2;
939 		} else {
940 			SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
941 			len++;
942 		}
943 	}
944 	qsort(perf_pmu_events_list, len,
945 		sizeof(struct perf_pmu_event_symbol), comp_pmu);
946 
947 	return;
948 err:
949 	perf_pmu__parse_cleanup();
950 }
951 
952 enum perf_pmu_event_symbol_type
953 perf_pmu__parse_check(const char *name)
954 {
955 	struct perf_pmu_event_symbol p, *r;
956 
957 	/* scan kernel pmu events from sysfs if needed */
958 	if (perf_pmu_events_list_num == 0)
959 		perf_pmu__parse_init();
960 	/*
961 	 * name "cpu" could be prefix of cpu-cycles or cpu// events.
962 	 * cpu-cycles has been handled by hardcode.
963 	 * So it must be cpu// events, not kernel pmu event.
964 	 */
965 	if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
966 		return PMU_EVENT_SYMBOL_ERR;
967 
968 	p.symbol = strdup(name);
969 	r = bsearch(&p, perf_pmu_events_list,
970 			(size_t) perf_pmu_events_list_num,
971 			sizeof(struct perf_pmu_event_symbol), comp_pmu);
972 	free(p.symbol);
973 	return r ? r->type : PMU_EVENT_SYMBOL_ERR;
974 }
975 
976 static int parse_events__scanner(const char *str, void *data, int start_token)
977 {
978 	YY_BUFFER_STATE buffer;
979 	void *scanner;
980 	int ret;
981 
982 	ret = parse_events_lex_init_extra(start_token, &scanner);
983 	if (ret)
984 		return ret;
985 
986 	buffer = parse_events__scan_string(str, scanner);
987 
988 #ifdef PARSER_DEBUG
989 	parse_events_debug = 1;
990 #endif
991 	ret = parse_events_parse(data, scanner);
992 
993 	parse_events__flush_buffer(buffer, scanner);
994 	parse_events__delete_buffer(buffer, scanner);
995 	parse_events_lex_destroy(scanner);
996 	return ret;
997 }
998 
999 /*
1000  * parse event config string, return a list of event terms.
1001  */
1002 int parse_events_terms(struct list_head *terms, const char *str)
1003 {
1004 	struct parse_events_terms data = {
1005 		.terms = NULL,
1006 	};
1007 	int ret;
1008 
1009 	ret = parse_events__scanner(str, &data, PE_START_TERMS);
1010 	if (!ret) {
1011 		list_splice(data.terms, terms);
1012 		zfree(&data.terms);
1013 		return 0;
1014 	}
1015 
1016 	if (data.terms)
1017 		parse_events__free_terms(data.terms);
1018 	return ret;
1019 }
1020 
1021 int parse_events(struct perf_evlist *evlist, const char *str)
1022 {
1023 	struct parse_events_evlist data = {
1024 		.list = LIST_HEAD_INIT(data.list),
1025 		.idx  = evlist->nr_entries,
1026 	};
1027 	int ret;
1028 
1029 	ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1030 	perf_pmu__parse_cleanup();
1031 	if (!ret) {
1032 		int entries = data.idx - evlist->nr_entries;
1033 		perf_evlist__splice_list_tail(evlist, &data.list, entries);
1034 		evlist->nr_groups += data.nr_groups;
1035 		return 0;
1036 	}
1037 
1038 	/*
1039 	 * There are 2 users - builtin-record and builtin-test objects.
1040 	 * Both call perf_evlist__delete in case of error, so we dont
1041 	 * need to bother.
1042 	 */
1043 	return ret;
1044 }
1045 
1046 int parse_events_option(const struct option *opt, const char *str,
1047 			int unset __maybe_unused)
1048 {
1049 	struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1050 	int ret = parse_events(evlist, str);
1051 
1052 	if (ret) {
1053 		fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
1054 		fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1055 	}
1056 	return ret;
1057 }
1058 
1059 int parse_filter(const struct option *opt, const char *str,
1060 		 int unset __maybe_unused)
1061 {
1062 	struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1063 	struct perf_evsel *last = NULL;
1064 
1065 	if (evlist->nr_entries > 0)
1066 		last = perf_evlist__last(evlist);
1067 
1068 	if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
1069 		fprintf(stderr,
1070 			"--filter option should follow a -e tracepoint option\n");
1071 		return -1;
1072 	}
1073 
1074 	last->filter = strdup(str);
1075 	if (last->filter == NULL) {
1076 		fprintf(stderr, "not enough memory to hold filter string\n");
1077 		return -1;
1078 	}
1079 
1080 	return 0;
1081 }
1082 
1083 static const char * const event_type_descriptors[] = {
1084 	"Hardware event",
1085 	"Software event",
1086 	"Tracepoint event",
1087 	"Hardware cache event",
1088 	"Raw hardware event descriptor",
1089 	"Hardware breakpoint",
1090 };
1091 
1092 /*
1093  * Print the events from <debugfs_mount_point>/tracing/events
1094  */
1095 
1096 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1097 			     bool name_only)
1098 {
1099 	DIR *sys_dir, *evt_dir;
1100 	struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1101 	char evt_path[MAXPATHLEN];
1102 	char dir_path[MAXPATHLEN];
1103 
1104 	sys_dir = opendir(tracing_events_path);
1105 	if (!sys_dir)
1106 		return;
1107 
1108 	for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1109 		if (subsys_glob != NULL &&
1110 		    !strglobmatch(sys_dirent.d_name, subsys_glob))
1111 			continue;
1112 
1113 		snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1114 			 sys_dirent.d_name);
1115 		evt_dir = opendir(dir_path);
1116 		if (!evt_dir)
1117 			continue;
1118 
1119 		for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1120 			if (event_glob != NULL &&
1121 			    !strglobmatch(evt_dirent.d_name, event_glob))
1122 				continue;
1123 
1124 			if (name_only) {
1125 				printf("%s:%s ", sys_dirent.d_name, evt_dirent.d_name);
1126 				continue;
1127 			}
1128 
1129 			snprintf(evt_path, MAXPATHLEN, "%s:%s",
1130 				 sys_dirent.d_name, evt_dirent.d_name);
1131 			printf("  %-50s [%s]\n", evt_path,
1132 				event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1133 		}
1134 		closedir(evt_dir);
1135 	}
1136 	closedir(sys_dir);
1137 }
1138 
1139 /*
1140  * Check whether event is in <debugfs_mount_point>/tracing/events
1141  */
1142 
1143 int is_valid_tracepoint(const char *event_string)
1144 {
1145 	DIR *sys_dir, *evt_dir;
1146 	struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1147 	char evt_path[MAXPATHLEN];
1148 	char dir_path[MAXPATHLEN];
1149 
1150 	sys_dir = opendir(tracing_events_path);
1151 	if (!sys_dir)
1152 		return 0;
1153 
1154 	for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1155 
1156 		snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1157 			 sys_dirent.d_name);
1158 		evt_dir = opendir(dir_path);
1159 		if (!evt_dir)
1160 			continue;
1161 
1162 		for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1163 			snprintf(evt_path, MAXPATHLEN, "%s:%s",
1164 				 sys_dirent.d_name, evt_dirent.d_name);
1165 			if (!strcmp(evt_path, event_string)) {
1166 				closedir(evt_dir);
1167 				closedir(sys_dir);
1168 				return 1;
1169 			}
1170 		}
1171 		closedir(evt_dir);
1172 	}
1173 	closedir(sys_dir);
1174 	return 0;
1175 }
1176 
1177 static bool is_event_supported(u8 type, unsigned config)
1178 {
1179 	bool ret = true;
1180 	int open_return;
1181 	struct perf_evsel *evsel;
1182 	struct perf_event_attr attr = {
1183 		.type = type,
1184 		.config = config,
1185 		.disabled = 1,
1186 	};
1187 	struct {
1188 		struct thread_map map;
1189 		int threads[1];
1190 	} tmap = {
1191 		.map.nr	 = 1,
1192 		.threads = { 0 },
1193 	};
1194 
1195 	evsel = perf_evsel__new(&attr);
1196 	if (evsel) {
1197 		open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1198 		ret = open_return >= 0;
1199 
1200 		if (open_return == -EACCES) {
1201 			/*
1202 			 * This happens if the paranoid value
1203 			 * /proc/sys/kernel/perf_event_paranoid is set to 2
1204 			 * Re-run with exclude_kernel set; we don't do that
1205 			 * by default as some ARM machines do not support it.
1206 			 *
1207 			 */
1208 			evsel->attr.exclude_kernel = 1;
1209 			ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1210 		}
1211 		perf_evsel__delete(evsel);
1212 	}
1213 
1214 	return ret;
1215 }
1216 
1217 static void __print_events_type(u8 type, struct event_symbol *syms,
1218 				unsigned max)
1219 {
1220 	char name[64];
1221 	unsigned i;
1222 
1223 	for (i = 0; i < max ; i++, syms++) {
1224 		if (!is_event_supported(type, i))
1225 			continue;
1226 
1227 		if (strlen(syms->alias))
1228 			snprintf(name, sizeof(name),  "%s OR %s",
1229 				 syms->symbol, syms->alias);
1230 		else
1231 			snprintf(name, sizeof(name), "%s", syms->symbol);
1232 
1233 		printf("  %-50s [%s]\n", name, event_type_descriptors[type]);
1234 	}
1235 }
1236 
1237 void print_events_type(u8 type)
1238 {
1239 	if (type == PERF_TYPE_SOFTWARE)
1240 		__print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX);
1241 	else
1242 		__print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
1243 }
1244 
1245 int print_hwcache_events(const char *event_glob, bool name_only)
1246 {
1247 	unsigned int type, op, i, printed = 0;
1248 	char name[64];
1249 
1250 	for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1251 		for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1252 			/* skip invalid cache type */
1253 			if (!perf_evsel__is_cache_op_valid(type, op))
1254 				continue;
1255 
1256 			for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1257 				__perf_evsel__hw_cache_type_op_res_name(type, op, i,
1258 									name, sizeof(name));
1259 				if (event_glob != NULL && !strglobmatch(name, event_glob))
1260 					continue;
1261 
1262 				if (!is_event_supported(PERF_TYPE_HW_CACHE,
1263 							type | (op << 8) | (i << 16)))
1264 					continue;
1265 
1266 				if (name_only)
1267 					printf("%s ", name);
1268 				else
1269 					printf("  %-50s [%s]\n", name,
1270 					       event_type_descriptors[PERF_TYPE_HW_CACHE]);
1271 				++printed;
1272 			}
1273 		}
1274 	}
1275 
1276 	if (printed)
1277 		printf("\n");
1278 	return printed;
1279 }
1280 
1281 static void print_symbol_events(const char *event_glob, unsigned type,
1282 				struct event_symbol *syms, unsigned max,
1283 				bool name_only)
1284 {
1285 	unsigned i, printed = 0;
1286 	char name[MAX_NAME_LEN];
1287 
1288 	for (i = 0; i < max; i++, syms++) {
1289 
1290 		if (event_glob != NULL &&
1291 		    !(strglobmatch(syms->symbol, event_glob) ||
1292 		      (syms->alias && strglobmatch(syms->alias, event_glob))))
1293 			continue;
1294 
1295 		if (!is_event_supported(type, i))
1296 			continue;
1297 
1298 		if (name_only) {
1299 			printf("%s ", syms->symbol);
1300 			continue;
1301 		}
1302 
1303 		if (strlen(syms->alias))
1304 			snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1305 		else
1306 			strncpy(name, syms->symbol, MAX_NAME_LEN);
1307 
1308 		printf("  %-50s [%s]\n", name, event_type_descriptors[type]);
1309 
1310 		printed++;
1311 	}
1312 
1313 	if (printed)
1314 		printf("\n");
1315 }
1316 
1317 /*
1318  * Print the help text for the event symbols:
1319  */
1320 void print_events(const char *event_glob, bool name_only)
1321 {
1322 	if (!name_only) {
1323 		printf("\n");
1324 		printf("List of pre-defined events (to be used in -e):\n");
1325 	}
1326 
1327 	print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
1328 			    event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
1329 
1330 	print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
1331 			    event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
1332 
1333 	print_hwcache_events(event_glob, name_only);
1334 
1335 	print_pmu_events(event_glob, name_only);
1336 
1337 	if (event_glob != NULL)
1338 		return;
1339 
1340 	if (!name_only) {
1341 		printf("  %-50s [%s]\n",
1342 		       "rNNN",
1343 		       event_type_descriptors[PERF_TYPE_RAW]);
1344 		printf("  %-50s [%s]\n",
1345 		       "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1346 		       event_type_descriptors[PERF_TYPE_RAW]);
1347 		printf("   (see 'man perf-list' on how to encode it)\n");
1348 		printf("\n");
1349 
1350 		printf("  %-50s [%s]\n",
1351 		       "mem:<addr>[/len][:access]",
1352 			event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1353 		printf("\n");
1354 	}
1355 
1356 	print_tracepoint_events(NULL, NULL, name_only);
1357 }
1358 
1359 int parse_events__is_hardcoded_term(struct parse_events_term *term)
1360 {
1361 	return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1362 }
1363 
1364 static int new_term(struct parse_events_term **_term, int type_val,
1365 		    int type_term, char *config,
1366 		    char *str, u64 num)
1367 {
1368 	struct parse_events_term *term;
1369 
1370 	term = zalloc(sizeof(*term));
1371 	if (!term)
1372 		return -ENOMEM;
1373 
1374 	INIT_LIST_HEAD(&term->list);
1375 	term->type_val  = type_val;
1376 	term->type_term = type_term;
1377 	term->config = config;
1378 
1379 	switch (type_val) {
1380 	case PARSE_EVENTS__TERM_TYPE_NUM:
1381 		term->val.num = num;
1382 		break;
1383 	case PARSE_EVENTS__TERM_TYPE_STR:
1384 		term->val.str = str;
1385 		break;
1386 	default:
1387 		free(term);
1388 		return -EINVAL;
1389 	}
1390 
1391 	*_term = term;
1392 	return 0;
1393 }
1394 
1395 int parse_events_term__num(struct parse_events_term **term,
1396 			   int type_term, char *config, u64 num)
1397 {
1398 	return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1399 			config, NULL, num);
1400 }
1401 
1402 int parse_events_term__str(struct parse_events_term **term,
1403 			   int type_term, char *config, char *str)
1404 {
1405 	return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1406 			config, str, 0);
1407 }
1408 
1409 int parse_events_term__sym_hw(struct parse_events_term **term,
1410 			      char *config, unsigned idx)
1411 {
1412 	struct event_symbol *sym;
1413 
1414 	BUG_ON(idx >= PERF_COUNT_HW_MAX);
1415 	sym = &event_symbols_hw[idx];
1416 
1417 	if (config)
1418 		return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1419 				PARSE_EVENTS__TERM_TYPE_USER, config,
1420 				(char *) sym->symbol, 0);
1421 	else
1422 		return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1423 				PARSE_EVENTS__TERM_TYPE_USER,
1424 				(char *) "event", (char *) sym->symbol, 0);
1425 }
1426 
1427 int parse_events_term__clone(struct parse_events_term **new,
1428 			     struct parse_events_term *term)
1429 {
1430 	return new_term(new, term->type_val, term->type_term, term->config,
1431 			term->val.str, term->val.num);
1432 }
1433 
1434 void parse_events__free_terms(struct list_head *terms)
1435 {
1436 	struct parse_events_term *term, *h;
1437 
1438 	list_for_each_entry_safe(term, h, terms, list)
1439 		free(term);
1440 }
1441