1 #include <linux/hw_breakpoint.h>
7 #include <subcmd/parse-options.h>
8 #include "parse-events.h"
9 #include <subcmd/exec-cmd.h>
14 #include "bpf-loader.h"
16 #include <api/fs/tracing_path.h>
17 #include "parse-events-bison.h"
18 #define YY_EXTRA_TYPE int
19 #include "parse-events-flex.h"
21 #include "thread_map.h"
23 #include "probe-file.h"
26 #define MAX_NAME_LEN 100
29 extern int parse_events_debug;
31 int parse_events_parse(void *data, void *scanner);
32 static int get_config_terms(struct list_head *head_config,
33 struct list_head *head_terms __maybe_unused);
35 static struct perf_pmu_event_symbol *perf_pmu_events_list;
37 * The variable indicates the number of supported pmu event symbols.
38 * 0 means not initialized and ready to init
39 * -1 means failed to init, don't try anymore
40 * >0 is the number of supported pmu event symbols
42 static int perf_pmu_events_list_num;
44 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
45 [PERF_COUNT_HW_CPU_CYCLES] = {
46 .symbol = "cpu-cycles",
49 [PERF_COUNT_HW_INSTRUCTIONS] = {
50 .symbol = "instructions",
53 [PERF_COUNT_HW_CACHE_REFERENCES] = {
54 .symbol = "cache-references",
57 [PERF_COUNT_HW_CACHE_MISSES] = {
58 .symbol = "cache-misses",
61 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
62 .symbol = "branch-instructions",
65 [PERF_COUNT_HW_BRANCH_MISSES] = {
66 .symbol = "branch-misses",
69 [PERF_COUNT_HW_BUS_CYCLES] = {
70 .symbol = "bus-cycles",
73 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
74 .symbol = "stalled-cycles-frontend",
75 .alias = "idle-cycles-frontend",
77 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
78 .symbol = "stalled-cycles-backend",
79 .alias = "idle-cycles-backend",
81 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
82 .symbol = "ref-cycles",
87 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
88 [PERF_COUNT_SW_CPU_CLOCK] = {
89 .symbol = "cpu-clock",
92 [PERF_COUNT_SW_TASK_CLOCK] = {
93 .symbol = "task-clock",
96 [PERF_COUNT_SW_PAGE_FAULTS] = {
97 .symbol = "page-faults",
100 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
101 .symbol = "context-switches",
104 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
105 .symbol = "cpu-migrations",
106 .alias = "migrations",
108 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
109 .symbol = "minor-faults",
112 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
113 .symbol = "major-faults",
116 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
117 .symbol = "alignment-faults",
120 [PERF_COUNT_SW_EMULATION_FAULTS] = {
121 .symbol = "emulation-faults",
124 [PERF_COUNT_SW_DUMMY] = {
128 [PERF_COUNT_SW_BPF_OUTPUT] = {
129 .symbol = "bpf-output",
134 #define __PERF_EVENT_FIELD(config, name) \
135 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
137 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
138 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
139 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
140 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
142 #define for_each_subsystem(sys_dir, sys_dirent) \
143 while ((sys_dirent = readdir(sys_dir)) != NULL) \
144 if (sys_dirent->d_type == DT_DIR && \
145 (strcmp(sys_dirent->d_name, ".")) && \
146 (strcmp(sys_dirent->d_name, "..")))
148 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
150 char evt_path[MAXPATHLEN];
153 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
154 sys_dir->d_name, evt_dir->d_name);
155 fd = open(evt_path, O_RDONLY);
163 #define for_each_event(sys_dirent, evt_dir, evt_dirent) \
164 while ((evt_dirent = readdir(evt_dir)) != NULL) \
165 if (evt_dirent->d_type == DT_DIR && \
166 (strcmp(evt_dirent->d_name, ".")) && \
167 (strcmp(evt_dirent->d_name, "..")) && \
168 (!tp_event_has_id(sys_dirent, evt_dirent)))
170 #define MAX_EVENT_LENGTH 512
173 struct tracepoint_path *tracepoint_id_to_path(u64 config)
175 struct tracepoint_path *path = NULL;
176 DIR *sys_dir, *evt_dir;
177 struct dirent *sys_dirent, *evt_dirent;
181 char evt_path[MAXPATHLEN];
182 char dir_path[MAXPATHLEN];
184 sys_dir = opendir(tracing_events_path);
188 for_each_subsystem(sys_dir, sys_dirent) {
190 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
192 evt_dir = opendir(dir_path);
196 for_each_event(sys_dirent, evt_dir, evt_dirent) {
198 scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
200 fd = open(evt_path, O_RDONLY);
203 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
212 path = zalloc(sizeof(*path));
213 path->system = malloc(MAX_EVENT_LENGTH);
218 path->name = malloc(MAX_EVENT_LENGTH);
220 zfree(&path->system);
224 strncpy(path->system, sys_dirent->d_name,
226 strncpy(path->name, evt_dirent->d_name,
238 struct tracepoint_path *tracepoint_name_to_path(const char *name)
240 struct tracepoint_path *path = zalloc(sizeof(*path));
241 char *str = strchr(name, ':');
243 if (path == NULL || str == NULL) {
248 path->system = strndup(name, str - name);
249 path->name = strdup(str+1);
251 if (path->system == NULL || path->name == NULL) {
252 zfree(&path->system);
261 const char *event_type(int type)
264 case PERF_TYPE_HARDWARE:
267 case PERF_TYPE_SOFTWARE:
270 case PERF_TYPE_TRACEPOINT:
273 case PERF_TYPE_HW_CACHE:
274 return "hardware-cache";
283 static int parse_events__is_name_term(struct parse_events_term *term)
285 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
288 static char *get_config_name(struct list_head *head_terms)
290 struct parse_events_term *term;
295 list_for_each_entry(term, head_terms, list)
296 if (parse_events__is_name_term(term))
297 return term->val.str;
302 static struct perf_evsel *
303 __add_event(struct list_head *list, int *idx,
304 struct perf_event_attr *attr,
305 char *name, struct cpu_map *cpus,
306 struct list_head *config_terms)
308 struct perf_evsel *evsel;
310 event_attr_init(attr);
312 evsel = perf_evsel__new_idx(attr, *idx);
317 evsel->cpus = cpu_map__get(cpus);
318 evsel->own_cpus = cpu_map__get(cpus);
321 evsel->name = strdup(name);
324 list_splice(config_terms, &evsel->config_terms);
326 list_add_tail(&evsel->node, list);
330 static int add_event(struct list_head *list, int *idx,
331 struct perf_event_attr *attr, char *name,
332 struct list_head *config_terms)
334 return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM;
337 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
342 for (i = 0; i < size; i++) {
343 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
344 n = strlen(names[i][j]);
345 if (n > longest && !strncasecmp(str, names[i][j], n))
355 typedef int config_term_func_t(struct perf_event_attr *attr,
356 struct parse_events_term *term,
357 struct parse_events_error *err);
358 static int config_term_common(struct perf_event_attr *attr,
359 struct parse_events_term *term,
360 struct parse_events_error *err);
361 static int config_attr(struct perf_event_attr *attr,
362 struct list_head *head,
363 struct parse_events_error *err,
364 config_term_func_t config_term);
366 int parse_events_add_cache(struct list_head *list, int *idx,
367 char *type, char *op_result1, char *op_result2,
368 struct parse_events_error *err,
369 struct list_head *head_config)
371 struct perf_event_attr attr;
372 LIST_HEAD(config_terms);
373 char name[MAX_NAME_LEN], *config_name;
374 int cache_type = -1, cache_op = -1, cache_result = -1;
375 char *op_result[2] = { op_result1, op_result2 };
379 * No fallback - if we cannot get a clear cache type
382 cache_type = parse_aliases(type, perf_evsel__hw_cache,
383 PERF_COUNT_HW_CACHE_MAX);
384 if (cache_type == -1)
387 config_name = get_config_name(head_config);
388 n = snprintf(name, MAX_NAME_LEN, "%s", type);
390 for (i = 0; (i < 2) && (op_result[i]); i++) {
391 char *str = op_result[i];
393 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
395 if (cache_op == -1) {
396 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
397 PERF_COUNT_HW_CACHE_OP_MAX);
399 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
405 if (cache_result == -1) {
406 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
407 PERF_COUNT_HW_CACHE_RESULT_MAX);
408 if (cache_result >= 0)
414 * Fall back to reads:
417 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
420 * Fall back to accesses:
422 if (cache_result == -1)
423 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
425 memset(&attr, 0, sizeof(attr));
426 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
427 attr.type = PERF_TYPE_HW_CACHE;
430 if (config_attr(&attr, head_config, err,
434 if (get_config_terms(head_config, &config_terms))
437 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
440 static void tracepoint_error(struct parse_events_error *e, int err,
441 const char *sys, const char *name)
449 * We get error directly from syscall errno ( > 0),
450 * or from encoded pointer's error ( < 0).
456 e->str = strdup("can't access trace events");
459 e->str = strdup("unknown tracepoint");
462 e->str = strdup("failed to add tracepoint");
466 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
467 e->help = strdup(help);
470 static int add_tracepoint(struct list_head *list, int *idx,
471 const char *sys_name, const char *evt_name,
472 struct parse_events_error *err,
473 struct list_head *head_config)
475 struct perf_evsel *evsel;
477 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
479 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
480 return PTR_ERR(evsel);
484 LIST_HEAD(config_terms);
486 if (get_config_terms(head_config, &config_terms))
488 list_splice(&config_terms, &evsel->config_terms);
491 list_add_tail(&evsel->node, list);
495 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
496 const char *sys_name, const char *evt_name,
497 struct parse_events_error *err,
498 struct list_head *head_config)
500 char evt_path[MAXPATHLEN];
501 struct dirent *evt_ent;
503 int ret = 0, found = 0;
505 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
506 evt_dir = opendir(evt_path);
508 tracepoint_error(err, errno, sys_name, evt_name);
512 while (!ret && (evt_ent = readdir(evt_dir))) {
513 if (!strcmp(evt_ent->d_name, ".")
514 || !strcmp(evt_ent->d_name, "..")
515 || !strcmp(evt_ent->d_name, "enable")
516 || !strcmp(evt_ent->d_name, "filter"))
519 if (!strglobmatch(evt_ent->d_name, evt_name))
524 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
529 tracepoint_error(err, ENOENT, sys_name, evt_name);
537 static int add_tracepoint_event(struct list_head *list, int *idx,
538 const char *sys_name, const char *evt_name,
539 struct parse_events_error *err,
540 struct list_head *head_config)
542 return strpbrk(evt_name, "*?") ?
543 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
545 add_tracepoint(list, idx, sys_name, evt_name,
549 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
550 const char *sys_name, const char *evt_name,
551 struct parse_events_error *err,
552 struct list_head *head_config)
554 struct dirent *events_ent;
558 events_dir = opendir(tracing_events_path);
560 tracepoint_error(err, errno, sys_name, evt_name);
564 while (!ret && (events_ent = readdir(events_dir))) {
565 if (!strcmp(events_ent->d_name, ".")
566 || !strcmp(events_ent->d_name, "..")
567 || !strcmp(events_ent->d_name, "enable")
568 || !strcmp(events_ent->d_name, "header_event")
569 || !strcmp(events_ent->d_name, "header_page"))
572 if (!strglobmatch(events_ent->d_name, sys_name))
575 ret = add_tracepoint_event(list, idx, events_ent->d_name,
576 evt_name, err, head_config);
579 closedir(events_dir);
583 struct __add_bpf_event_param {
584 struct parse_events_evlist *data;
585 struct list_head *list;
586 struct list_head *head_config;
589 static int add_bpf_event(const char *group, const char *event, int fd,
592 LIST_HEAD(new_evsels);
593 struct __add_bpf_event_param *param = _param;
594 struct parse_events_evlist *evlist = param->data;
595 struct list_head *list = param->list;
596 struct perf_evsel *pos;
599 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
602 err = parse_events_add_tracepoint(&new_evsels, &evlist->idx, group,
603 event, evlist->error,
606 struct perf_evsel *evsel, *tmp;
608 pr_debug("Failed to add BPF event %s:%s\n",
610 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
611 list_del(&evsel->node);
612 perf_evsel__delete(evsel);
616 pr_debug("adding %s:%s\n", group, event);
618 list_for_each_entry(pos, &new_evsels, node) {
619 pr_debug("adding %s:%s to %p\n",
623 list_splice(&new_evsels, list);
627 int parse_events_load_bpf_obj(struct parse_events_evlist *data,
628 struct list_head *list,
629 struct bpf_object *obj,
630 struct list_head *head_config)
634 struct __add_bpf_event_param param = {data, list, head_config};
635 static bool registered_unprobe_atexit = false;
637 if (IS_ERR(obj) || !obj) {
638 snprintf(errbuf, sizeof(errbuf),
639 "Internal error: load bpf obj with NULL");
645 * Register atexit handler before calling bpf__probe() so
646 * bpf__probe() don't need to unprobe probe points its already
647 * created when failure.
649 if (!registered_unprobe_atexit) {
651 registered_unprobe_atexit = true;
654 err = bpf__probe(obj);
656 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
660 err = bpf__load(obj);
662 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
666 err = bpf__foreach_event(obj, add_bpf_event, ¶m);
668 snprintf(errbuf, sizeof(errbuf),
669 "Attach events in BPF object failed");
675 data->error->help = strdup("(add -v to see detail)");
676 data->error->str = strdup(errbuf);
681 parse_events_config_bpf(struct parse_events_evlist *data,
682 struct bpf_object *obj,
683 struct list_head *head_config)
685 struct parse_events_term *term;
688 if (!head_config || list_empty(head_config))
691 list_for_each_entry(term, head_config, list) {
695 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
696 snprintf(errbuf, sizeof(errbuf),
697 "Invalid config term for BPF object");
698 errbuf[BUFSIZ - 1] = '\0';
700 data->error->idx = term->err_term;
701 data->error->str = strdup(errbuf);
705 err = bpf__config_obj(obj, term, data->evlist, &error_pos);
707 bpf__strerror_config_obj(obj, term, data->evlist,
708 &error_pos, err, errbuf,
710 data->error->help = strdup(
711 "Hint:\tValid config terms:\n"
712 " \tmap:[<arraymap>].value<indices>=[value]\n"
713 " \tmap:[<eventmap>].event<indices>=[event]\n"
715 " \twhere <indices> is something like [0,3...5] or [all]\n"
716 " \t(add -v to see detail)");
717 data->error->str = strdup(errbuf);
718 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
719 data->error->idx = term->err_val;
721 data->error->idx = term->err_term + error_pos;
729 * Split config terms:
730 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
731 * 'call-graph=fp' is 'evt config', should be applied to each
733 * 'map:array.value[0]=1' is 'obj config', should be processed
734 * with parse_events_config_bpf.
736 * Move object config terms from the first list to obj_head_config.
739 split_bpf_config_terms(struct list_head *evt_head_config,
740 struct list_head *obj_head_config)
742 struct parse_events_term *term, *temp;
745 * Currectly, all possible user config term
746 * belong to bpf object. parse_events__is_hardcoded_term()
747 * happends to be a good flag.
749 * See parse_events_config_bpf() and
750 * config_term_tracepoint().
752 list_for_each_entry_safe(term, temp, evt_head_config, list)
753 if (!parse_events__is_hardcoded_term(term))
754 list_move_tail(&term->list, obj_head_config);
757 int parse_events_load_bpf(struct parse_events_evlist *data,
758 struct list_head *list,
761 struct list_head *head_config)
764 struct bpf_object *obj;
765 LIST_HEAD(obj_head_config);
768 split_bpf_config_terms(head_config, &obj_head_config);
770 obj = bpf__prepare_load(bpf_file_name, source);
777 snprintf(errbuf, sizeof(errbuf),
778 "BPF support is not compiled");
780 bpf__strerror_prepare_load(bpf_file_name,
785 data->error->help = strdup("(add -v to see detail)");
786 data->error->str = strdup(errbuf);
790 err = parse_events_load_bpf_obj(data, list, obj, head_config);
793 err = parse_events_config_bpf(data, obj, &obj_head_config);
796 * Caller doesn't know anything about obj_head_config,
797 * so combine them together again before returnning.
800 list_splice_tail(&obj_head_config, head_config);
805 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
809 for (i = 0; i < 3; i++) {
810 if (!type || !type[i])
813 #define CHECK_SET_TYPE(bit) \
815 if (attr->bp_type & bit) \
818 attr->bp_type |= bit; \
823 CHECK_SET_TYPE(HW_BREAKPOINT_R);
826 CHECK_SET_TYPE(HW_BREAKPOINT_W);
829 CHECK_SET_TYPE(HW_BREAKPOINT_X);
836 #undef CHECK_SET_TYPE
838 if (!attr->bp_type) /* Default */
839 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
844 int parse_events_add_breakpoint(struct list_head *list, int *idx,
845 void *ptr, char *type, u64 len)
847 struct perf_event_attr attr;
849 memset(&attr, 0, sizeof(attr));
850 attr.bp_addr = (unsigned long) ptr;
852 if (parse_breakpoint_type(type, &attr))
855 /* Provide some defaults if len is not specified */
857 if (attr.bp_type == HW_BREAKPOINT_X)
860 len = HW_BREAKPOINT_LEN_4;
865 attr.type = PERF_TYPE_BREAKPOINT;
866 attr.sample_period = 1;
868 return add_event(list, idx, &attr, NULL, NULL);
871 static int check_type_val(struct parse_events_term *term,
872 struct parse_events_error *err,
875 if (type == term->type_val)
879 err->idx = term->err_val;
880 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
881 err->str = strdup("expected numeric value");
883 err->str = strdup("expected string value");
889 * Update according to parse-events.l
891 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
892 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
893 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
894 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
895 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
896 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
897 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
898 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
899 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
900 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
901 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
902 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
903 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
904 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
905 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
906 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
907 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
908 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
911 static bool config_term_shrinked;
914 config_term_avail(int term_type, struct parse_events_error *err)
916 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
917 err->str = strdup("Invalid term_type");
920 if (!config_term_shrinked)
924 case PARSE_EVENTS__TERM_TYPE_CONFIG:
925 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
926 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
927 case PARSE_EVENTS__TERM_TYPE_NAME:
928 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
934 /* term_type is validated so indexing is safe */
935 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
936 config_term_names[term_type]) < 0)
942 void parse_events__shrink_config_terms(void)
944 config_term_shrinked = true;
947 static int config_term_common(struct perf_event_attr *attr,
948 struct parse_events_term *term,
949 struct parse_events_error *err)
951 #define CHECK_TYPE_VAL(type) \
953 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
957 switch (term->type_term) {
958 case PARSE_EVENTS__TERM_TYPE_CONFIG:
960 attr->config = term->val.num;
962 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
964 attr->config1 = term->val.num;
966 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
968 attr->config2 = term->val.num;
970 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
973 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
976 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
978 * TODO uncomment when the field is available
979 * attr->branch_sample_type = term->val.num;
982 case PARSE_EVENTS__TERM_TYPE_TIME:
984 if (term->val.num > 1) {
985 err->str = strdup("expected 0 or 1");
986 err->idx = term->err_val;
990 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
993 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
996 case PARSE_EVENTS__TERM_TYPE_INHERIT:
999 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1000 CHECK_TYPE_VAL(NUM);
1002 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1003 CHECK_TYPE_VAL(NUM);
1005 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1006 CHECK_TYPE_VAL(NUM);
1008 case PARSE_EVENTS__TERM_TYPE_NAME:
1009 CHECK_TYPE_VAL(STR);
1011 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1012 CHECK_TYPE_VAL(NUM);
1015 err->str = strdup("unknown term");
1016 err->idx = term->err_term;
1017 err->help = parse_events_formats_error_string(NULL);
1022 * Check term availbility after basic checking so
1023 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1025 * If check availbility at the entry of this function,
1026 * user will see "'<sysfs term>' is not usable in 'perf stat'"
1027 * if an invalid config term is provided for legacy events
1028 * (for example, instructions/badterm/...), which is confusing.
1030 if (!config_term_avail(term->type_term, err))
1033 #undef CHECK_TYPE_VAL
1036 static int config_term_pmu(struct perf_event_attr *attr,
1037 struct parse_events_term *term,
1038 struct parse_events_error *err)
1040 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1041 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1043 * Always succeed for sysfs terms, as we dont know
1044 * at this point what type they need to have.
1048 return config_term_common(attr, term, err);
1051 static int config_term_tracepoint(struct perf_event_attr *attr,
1052 struct parse_events_term *term,
1053 struct parse_events_error *err)
1055 switch (term->type_term) {
1056 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1057 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1058 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1059 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1060 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1061 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1062 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1063 return config_term_common(attr, term, err);
1066 err->idx = term->err_term;
1067 err->str = strdup("unknown term");
1068 err->help = strdup("valid terms: call-graph,stack-size\n");
1076 static int config_attr(struct perf_event_attr *attr,
1077 struct list_head *head,
1078 struct parse_events_error *err,
1079 config_term_func_t config_term)
1081 struct parse_events_term *term;
1083 list_for_each_entry(term, head, list)
1084 if (config_term(attr, term, err))
1090 static int get_config_terms(struct list_head *head_config,
1091 struct list_head *head_terms __maybe_unused)
1093 #define ADD_CONFIG_TERM(__type, __name, __val) \
1095 struct perf_evsel_config_term *__t; \
1097 __t = zalloc(sizeof(*__t)); \
1101 INIT_LIST_HEAD(&__t->list); \
1102 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1103 __t->val.__name = __val; \
1104 list_add_tail(&__t->list, head_terms); \
1107 struct parse_events_term *term;
1109 list_for_each_entry(term, head_config, list) {
1110 switch (term->type_term) {
1111 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1112 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1114 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1115 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1117 case PARSE_EVENTS__TERM_TYPE_TIME:
1118 ADD_CONFIG_TERM(TIME, time, term->val.num);
1120 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1121 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1123 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1124 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1126 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1127 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1129 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1130 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1132 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1133 ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1135 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1136 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1138 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1139 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1141 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1142 ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1148 #undef ADD_EVSEL_CONFIG
1152 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1153 const char *sys, const char *event,
1154 struct parse_events_error *err,
1155 struct list_head *head_config)
1158 struct perf_event_attr attr;
1160 if (config_attr(&attr, head_config, err,
1161 config_term_tracepoint))
1165 if (strpbrk(sys, "*?"))
1166 return add_tracepoint_multi_sys(list, idx, sys, event,
1169 return add_tracepoint_event(list, idx, sys, event,
1173 int parse_events_add_numeric(struct parse_events_evlist *data,
1174 struct list_head *list,
1175 u32 type, u64 config,
1176 struct list_head *head_config)
1178 struct perf_event_attr attr;
1179 LIST_HEAD(config_terms);
1181 memset(&attr, 0, sizeof(attr));
1183 attr.config = config;
1186 if (config_attr(&attr, head_config, data->error,
1187 config_term_common))
1190 if (get_config_terms(head_config, &config_terms))
1194 return add_event(list, &data->idx, &attr,
1195 get_config_name(head_config), &config_terms);
1198 int parse_events_add_pmu(struct parse_events_evlist *data,
1199 struct list_head *list, char *name,
1200 struct list_head *head_config)
1202 struct perf_event_attr attr;
1203 struct perf_pmu_info info;
1204 struct perf_pmu *pmu;
1205 struct perf_evsel *evsel;
1206 LIST_HEAD(config_terms);
1208 pmu = perf_pmu__find(name);
1212 if (pmu->default_config) {
1213 memcpy(&attr, pmu->default_config,
1214 sizeof(struct perf_event_attr));
1216 memset(&attr, 0, sizeof(attr));
1220 attr.type = pmu->type;
1221 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
1222 return evsel ? 0 : -ENOMEM;
1225 if (perf_pmu__check_alias(pmu, head_config, &info))
1229 * Configure hardcoded terms first, no need to check
1230 * return value when called with fail == 0 ;)
1232 if (config_attr(&attr, head_config, data->error, config_term_pmu))
1235 if (get_config_terms(head_config, &config_terms))
1238 if (perf_pmu__config(pmu, &attr, head_config, data->error))
1241 evsel = __add_event(list, &data->idx, &attr,
1242 get_config_name(head_config), pmu->cpus,
1245 evsel->unit = info.unit;
1246 evsel->scale = info.scale;
1247 evsel->per_pkg = info.per_pkg;
1248 evsel->snapshot = info.snapshot;
1251 return evsel ? 0 : -ENOMEM;
1254 int parse_events__modifier_group(struct list_head *list,
1257 return parse_events__modifier_event(list, event_mod, true);
1260 void parse_events__set_leader(char *name, struct list_head *list)
1262 struct perf_evsel *leader;
1264 if (list_empty(list)) {
1265 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1269 __perf_evlist__set_leader(list);
1270 leader = list_entry(list->next, struct perf_evsel, node);
1271 leader->group_name = name ? strdup(name) : NULL;
1274 /* list_event is assumed to point to malloc'ed memory */
1275 void parse_events_update_lists(struct list_head *list_event,
1276 struct list_head *list_all)
1279 * Called for single event definition. Update the
1280 * 'all event' list, and reinit the 'single event'
1281 * list, for next event definition.
1283 list_splice_tail(list_event, list_all);
1287 struct event_modifier {
1301 static int get_event_modifier(struct event_modifier *mod, char *str,
1302 struct perf_evsel *evsel)
1304 int eu = evsel ? evsel->attr.exclude_user : 0;
1305 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1306 int eh = evsel ? evsel->attr.exclude_hv : 0;
1307 int eH = evsel ? evsel->attr.exclude_host : 0;
1308 int eG = evsel ? evsel->attr.exclude_guest : 0;
1309 int eI = evsel ? evsel->attr.exclude_idle : 0;
1310 int precise = evsel ? evsel->attr.precise_ip : 0;
1311 int precise_max = 0;
1312 int sample_read = 0;
1313 int pinned = evsel ? evsel->attr.pinned : 0;
1315 int exclude = eu | ek | eh;
1316 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1318 memset(mod, 0, sizeof(*mod));
1323 exclude = eu = ek = eh = 1;
1325 } else if (*str == 'k') {
1327 exclude = eu = ek = eh = 1;
1329 } else if (*str == 'h') {
1331 exclude = eu = ek = eh = 1;
1333 } else if (*str == 'G') {
1335 exclude_GH = eG = eH = 1;
1337 } else if (*str == 'H') {
1339 exclude_GH = eG = eH = 1;
1341 } else if (*str == 'I') {
1343 } else if (*str == 'p') {
1345 /* use of precise requires exclude_guest */
1348 } else if (*str == 'P') {
1350 } else if (*str == 'S') {
1352 } else if (*str == 'D') {
1363 * 0 - SAMPLE_IP can have arbitrary skid
1364 * 1 - SAMPLE_IP must have constant skid
1365 * 2 - SAMPLE_IP requested to have 0 skid
1366 * 3 - SAMPLE_IP must have 0 skid
1368 * See also PERF_RECORD_MISC_EXACT_IP
1379 mod->precise = precise;
1380 mod->precise_max = precise_max;
1381 mod->exclude_GH = exclude_GH;
1382 mod->sample_read = sample_read;
1383 mod->pinned = pinned;
1389 * Basic modifier sanity check to validate it contains only one
1390 * instance of any modifier (apart from 'p') present.
1392 static int check_modifier(char *str)
1396 /* The sizeof includes 0 byte as well. */
1397 if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
1401 if (*p != 'p' && strchr(p + 1, *p))
1409 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1411 struct perf_evsel *evsel;
1412 struct event_modifier mod;
1417 if (check_modifier(str))
1420 if (!add && get_event_modifier(&mod, str, NULL))
1423 __evlist__for_each_entry(list, evsel) {
1424 if (add && get_event_modifier(&mod, str, evsel))
1427 evsel->attr.exclude_user = mod.eu;
1428 evsel->attr.exclude_kernel = mod.ek;
1429 evsel->attr.exclude_hv = mod.eh;
1430 evsel->attr.precise_ip = mod.precise;
1431 evsel->attr.exclude_host = mod.eH;
1432 evsel->attr.exclude_guest = mod.eG;
1433 evsel->attr.exclude_idle = mod.eI;
1434 evsel->exclude_GH = mod.exclude_GH;
1435 evsel->sample_read = mod.sample_read;
1436 evsel->precise_max = mod.precise_max;
1438 if (perf_evsel__is_group_leader(evsel))
1439 evsel->attr.pinned = mod.pinned;
1445 int parse_events_name(struct list_head *list, char *name)
1447 struct perf_evsel *evsel;
1449 __evlist__for_each_entry(list, evsel) {
1451 evsel->name = strdup(name);
1458 comp_pmu(const void *p1, const void *p2)
1460 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1461 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1463 return strcasecmp(pmu1->symbol, pmu2->symbol);
1466 static void perf_pmu__parse_cleanup(void)
1468 if (perf_pmu_events_list_num > 0) {
1469 struct perf_pmu_event_symbol *p;
1472 for (i = 0; i < perf_pmu_events_list_num; i++) {
1473 p = perf_pmu_events_list + i;
1476 free(perf_pmu_events_list);
1477 perf_pmu_events_list = NULL;
1478 perf_pmu_events_list_num = 0;
1482 #define SET_SYMBOL(str, stype) \
1491 * Read the pmu events list from sysfs
1492 * Save it into perf_pmu_events_list
1494 static void perf_pmu__parse_init(void)
1497 struct perf_pmu *pmu = NULL;
1498 struct perf_pmu_alias *alias;
1501 pmu = perf_pmu__find("cpu");
1502 if ((pmu == NULL) || list_empty(&pmu->aliases)) {
1503 perf_pmu_events_list_num = -1;
1506 list_for_each_entry(alias, &pmu->aliases, list) {
1507 if (strchr(alias->name, '-'))
1511 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1512 if (!perf_pmu_events_list)
1514 perf_pmu_events_list_num = len;
1517 list_for_each_entry(alias, &pmu->aliases, list) {
1518 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1519 char *tmp = strchr(alias->name, '-');
1522 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1523 PMU_EVENT_SYMBOL_PREFIX);
1525 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1528 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1532 qsort(perf_pmu_events_list, len,
1533 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1537 perf_pmu__parse_cleanup();
1540 enum perf_pmu_event_symbol_type
1541 perf_pmu__parse_check(const char *name)
1543 struct perf_pmu_event_symbol p, *r;
1545 /* scan kernel pmu events from sysfs if needed */
1546 if (perf_pmu_events_list_num == 0)
1547 perf_pmu__parse_init();
1549 * name "cpu" could be prefix of cpu-cycles or cpu// events.
1550 * cpu-cycles has been handled by hardcode.
1551 * So it must be cpu// events, not kernel pmu event.
1553 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1554 return PMU_EVENT_SYMBOL_ERR;
1556 p.symbol = strdup(name);
1557 r = bsearch(&p, perf_pmu_events_list,
1558 (size_t) perf_pmu_events_list_num,
1559 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1561 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1564 static int parse_events__scanner(const char *str, void *data, int start_token)
1566 YY_BUFFER_STATE buffer;
1570 ret = parse_events_lex_init_extra(start_token, &scanner);
1574 buffer = parse_events__scan_string(str, scanner);
1577 parse_events_debug = 1;
1579 ret = parse_events_parse(data, scanner);
1581 parse_events__flush_buffer(buffer, scanner);
1582 parse_events__delete_buffer(buffer, scanner);
1583 parse_events_lex_destroy(scanner);
1588 * parse event config string, return a list of event terms.
1590 int parse_events_terms(struct list_head *terms, const char *str)
1592 struct parse_events_terms data = {
1597 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1599 list_splice(data.terms, terms);
1604 parse_events_terms__delete(data.terms);
1608 int parse_events(struct perf_evlist *evlist, const char *str,
1609 struct parse_events_error *err)
1611 struct parse_events_evlist data = {
1612 .list = LIST_HEAD_INIT(data.list),
1613 .idx = evlist->nr_entries,
1619 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1620 perf_pmu__parse_cleanup();
1622 struct perf_evsel *last;
1624 if (list_empty(&data.list)) {
1625 WARN_ONCE(true, "WARNING: event parser found nothing");
1629 perf_evlist__splice_list_tail(evlist, &data.list);
1630 evlist->nr_groups += data.nr_groups;
1631 last = perf_evlist__last(evlist);
1632 last->cmdline_group_boundary = true;
1638 * There are 2 users - builtin-record and builtin-test objects.
1639 * Both call perf_evlist__delete in case of error, so we dont
1645 #define MAX_WIDTH 1000
1646 static int get_term_width(void)
1650 get_term_dimensions(&ws);
1651 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1654 static void parse_events_print_error(struct parse_events_error *err,
1657 const char *str = "invalid or unsupported event: ";
1658 char _buf[MAX_WIDTH];
1659 char *buf = (char *) event;
1663 /* -2 for extra '' in the final fprintf */
1664 int width = get_term_width() - 2;
1665 int len_event = strlen(event);
1666 int len_str, max_len, cut = 0;
1669 * Maximum error index indent, we will cut
1670 * the event string if it's bigger.
1672 int max_err_idx = 13;
1675 * Let's be specific with the message when
1676 * we have the precise error.
1678 str = "event syntax error: ";
1679 len_str = strlen(str);
1680 max_len = width - len_str;
1684 /* We're cutting from the beginning. */
1685 if (err->idx > max_err_idx)
1686 cut = err->idx - max_err_idx;
1688 strncpy(buf, event + cut, max_len);
1690 /* Mark cut parts with '..' on both sides. */
1692 buf[0] = buf[1] = '.';
1694 if ((len_event - cut) > max_len) {
1695 buf[max_len - 1] = buf[max_len - 2] = '.';
1699 idx = len_str + err->idx - cut;
1702 fprintf(stderr, "%s'%s'\n", str, buf);
1704 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1706 fprintf(stderr, "\n%s\n", err->help);
1711 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1716 int parse_events_option(const struct option *opt, const char *str,
1717 int unset __maybe_unused)
1719 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1720 struct parse_events_error err = { .idx = 0, };
1721 int ret = parse_events(evlist, str, &err);
1724 parse_events_print_error(&err, str);
1730 foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1731 int (*func)(struct perf_evsel *evsel,
1735 struct perf_evsel *last = NULL;
1739 * Don't return when list_empty, give func a chance to report
1740 * error when it found last == NULL.
1742 * So no need to WARN here, let *func do this.
1744 if (evlist->nr_entries > 0)
1745 last = perf_evlist__last(evlist);
1748 err = (*func)(last, arg);
1754 if (last->node.prev == &evlist->entries)
1756 last = list_entry(last->node.prev, struct perf_evsel, node);
1757 } while (!last->cmdline_group_boundary);
1762 static int set_filter(struct perf_evsel *evsel, const void *arg)
1764 const char *str = arg;
1766 int nr_addr_filters = 0;
1767 struct perf_pmu *pmu = NULL;
1772 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1773 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
1775 "not enough memory to hold filter string\n");
1782 while ((pmu = perf_pmu__scan(pmu)) != NULL)
1783 if (pmu->type == evsel->attr.type) {
1789 perf_pmu__scan_file(pmu, "nr_addr_filters",
1790 "%d", &nr_addr_filters);
1792 if (!nr_addr_filters)
1795 if (perf_evsel__append_addr_filter(evsel, str) < 0) {
1797 "not enough memory to hold filter string\n");
1805 "--filter option should follow a -e tracepoint or HW tracer option\n");
1810 int parse_filter(const struct option *opt, const char *str,
1811 int unset __maybe_unused)
1813 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1815 return foreach_evsel_in_last_glob(evlist, set_filter,
1819 static int add_exclude_perf_filter(struct perf_evsel *evsel,
1820 const void *arg __maybe_unused)
1822 char new_filter[64];
1824 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1826 "--exclude-perf option should follow a -e tracepoint option\n");
1830 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1832 if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
1834 "not enough memory to hold filter string\n");
1841 int exclude_perf(const struct option *opt,
1842 const char *arg __maybe_unused,
1843 int unset __maybe_unused)
1845 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1847 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1851 static const char * const event_type_descriptors[] = {
1855 "Hardware cache event",
1856 "Raw hardware event descriptor",
1857 "Hardware breakpoint",
1860 static int cmp_string(const void *a, const void *b)
1862 const char * const *as = a;
1863 const char * const *bs = b;
1865 return strcmp(*as, *bs);
1869 * Print the events from <debugfs_mount_point>/tracing/events
1872 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1875 DIR *sys_dir, *evt_dir;
1876 struct dirent *sys_dirent, *evt_dirent;
1877 char evt_path[MAXPATHLEN];
1878 char dir_path[MAXPATHLEN];
1879 char **evt_list = NULL;
1880 unsigned int evt_i = 0, evt_num = 0;
1881 bool evt_num_known = false;
1884 sys_dir = opendir(tracing_events_path);
1888 if (evt_num_known) {
1889 evt_list = zalloc(sizeof(char *) * evt_num);
1891 goto out_close_sys_dir;
1894 for_each_subsystem(sys_dir, sys_dirent) {
1895 if (subsys_glob != NULL &&
1896 !strglobmatch(sys_dirent->d_name, subsys_glob))
1899 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1900 sys_dirent->d_name);
1901 evt_dir = opendir(dir_path);
1905 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1906 if (event_glob != NULL &&
1907 !strglobmatch(evt_dirent->d_name, event_glob))
1910 if (!evt_num_known) {
1915 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1916 sys_dirent->d_name, evt_dirent->d_name);
1918 evt_list[evt_i] = strdup(evt_path);
1919 if (evt_list[evt_i] == NULL)
1920 goto out_close_evt_dir;
1927 if (!evt_num_known) {
1928 evt_num_known = true;
1931 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1933 while (evt_i < evt_num) {
1935 printf("%s ", evt_list[evt_i++]);
1938 printf(" %-50s [%s]\n", evt_list[evt_i++],
1939 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1941 if (evt_num && pager_in_use())
1946 for (evt_i = 0; evt_i < evt_num; evt_i++)
1947 zfree(&evt_list[evt_i]);
1956 printf("FATAL: not enough memory to print %s\n",
1957 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1963 * Check whether event is in <debugfs_mount_point>/tracing/events
1966 int is_valid_tracepoint(const char *event_string)
1968 DIR *sys_dir, *evt_dir;
1969 struct dirent *sys_dirent, *evt_dirent;
1970 char evt_path[MAXPATHLEN];
1971 char dir_path[MAXPATHLEN];
1973 sys_dir = opendir(tracing_events_path);
1977 for_each_subsystem(sys_dir, sys_dirent) {
1979 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1980 sys_dirent->d_name);
1981 evt_dir = opendir(dir_path);
1985 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1986 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1987 sys_dirent->d_name, evt_dirent->d_name);
1988 if (!strcmp(evt_path, event_string)) {
2000 static bool is_event_supported(u8 type, unsigned config)
2004 struct perf_evsel *evsel;
2005 struct perf_event_attr attr = {
2011 struct thread_map map;
2018 evsel = perf_evsel__new(&attr);
2020 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
2021 ret = open_return >= 0;
2023 if (open_return == -EACCES) {
2025 * This happens if the paranoid value
2026 * /proc/sys/kernel/perf_event_paranoid is set to 2
2027 * Re-run with exclude_kernel set; we don't do that
2028 * by default as some ARM machines do not support it.
2031 evsel->attr.exclude_kernel = 1;
2032 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
2034 perf_evsel__delete(evsel);
2040 void print_sdt_events(const char *subsys_glob, const char *event_glob,
2043 struct probe_cache *pcache;
2044 struct probe_cache_entry *ent;
2045 struct strlist *bidlist, *sdtlist;
2046 struct strlist_config cfg = {.dont_dupstr = true};
2047 struct str_node *nd, *nd2;
2048 char *buf, *path, *ptr = NULL;
2049 bool show_detail = false;
2052 sdtlist = strlist__new(NULL, &cfg);
2054 pr_debug("Failed to allocate new strlist for SDT\n");
2057 bidlist = build_id_cache__list_all(true);
2059 pr_debug("Failed to get buildids: %d\n", errno);
2062 strlist__for_each_entry(nd, bidlist) {
2063 pcache = probe_cache__new(nd->s);
2066 list_for_each_entry(ent, &pcache->entries, node) {
2070 !strglobmatch(ent->pev.group, subsys_glob))
2073 !strglobmatch(ent->pev.event, event_glob))
2075 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2076 ent->pev.event, nd->s);
2078 strlist__add(sdtlist, buf);
2080 probe_cache__delete(pcache);
2082 strlist__delete(bidlist);
2084 strlist__for_each_entry(nd, sdtlist) {
2085 buf = strchr(nd->s, '@');
2089 printf("%s ", nd->s);
2092 nd2 = strlist__next(nd);
2094 ptr = strchr(nd2->s, '@');
2097 if (strcmp(nd->s, nd2->s) == 0)
2101 path = build_id_cache__origname(buf);
2102 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2104 printf(" %-50s [%s]\n", buf, "SDT event");
2109 printf(" %-50s [%s]\n", nd->s, "SDT event");
2111 if (strcmp(nd->s, nd2->s) != 0)
2112 show_detail = false;
2117 strlist__delete(sdtlist);
2120 int print_hwcache_events(const char *event_glob, bool name_only)
2122 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2124 char **evt_list = NULL;
2125 bool evt_num_known = false;
2128 if (evt_num_known) {
2129 evt_list = zalloc(sizeof(char *) * evt_num);
2134 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2135 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2136 /* skip invalid cache type */
2137 if (!perf_evsel__is_cache_op_valid(type, op))
2140 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2141 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2142 name, sizeof(name));
2143 if (event_glob != NULL && !strglobmatch(name, event_glob))
2146 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2147 type | (op << 8) | (i << 16)))
2150 if (!evt_num_known) {
2155 evt_list[evt_i] = strdup(name);
2156 if (evt_list[evt_i] == NULL)
2163 if (!evt_num_known) {
2164 evt_num_known = true;
2167 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2169 while (evt_i < evt_num) {
2171 printf("%s ", evt_list[evt_i++]);
2174 printf(" %-50s [%s]\n", evt_list[evt_i++],
2175 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2177 if (evt_num && pager_in_use())
2182 for (evt_i = 0; evt_i < evt_num; evt_i++)
2183 zfree(&evt_list[evt_i]);
2188 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2194 void print_symbol_events(const char *event_glob, unsigned type,
2195 struct event_symbol *syms, unsigned max,
2198 unsigned int i, evt_i = 0, evt_num = 0;
2199 char name[MAX_NAME_LEN];
2200 char **evt_list = NULL;
2201 bool evt_num_known = false;
2204 if (evt_num_known) {
2205 evt_list = zalloc(sizeof(char *) * evt_num);
2211 for (i = 0; i < max; i++, syms++) {
2213 if (event_glob != NULL && syms->symbol != NULL &&
2214 !(strglobmatch(syms->symbol, event_glob) ||
2215 (syms->alias && strglobmatch(syms->alias, event_glob))))
2218 if (!is_event_supported(type, i))
2221 if (!evt_num_known) {
2226 if (!name_only && strlen(syms->alias))
2227 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2229 strlcpy(name, syms->symbol, MAX_NAME_LEN);
2231 evt_list[evt_i] = strdup(name);
2232 if (evt_list[evt_i] == NULL)
2237 if (!evt_num_known) {
2238 evt_num_known = true;
2241 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2243 while (evt_i < evt_num) {
2245 printf("%s ", evt_list[evt_i++]);
2248 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2250 if (evt_num && pager_in_use())
2255 for (evt_i = 0; evt_i < evt_num; evt_i++)
2256 zfree(&evt_list[evt_i]);
2261 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2267 * Print the help text for the event symbols:
2269 void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2272 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2273 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2275 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2276 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2278 print_hwcache_events(event_glob, name_only);
2280 print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
2282 if (event_glob != NULL)
2286 printf(" %-50s [%s]\n",
2288 event_type_descriptors[PERF_TYPE_RAW]);
2289 printf(" %-50s [%s]\n",
2290 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2291 event_type_descriptors[PERF_TYPE_RAW]);
2293 printf(" (see 'man perf-list' on how to encode it)\n\n");
2295 printf(" %-50s [%s]\n",
2296 "mem:<addr>[/len][:access]",
2297 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2302 print_tracepoint_events(NULL, NULL, name_only);
2304 print_sdt_events(NULL, NULL, name_only);
2307 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2309 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2312 static int new_term(struct parse_events_term **_term, int type_val,
2313 int type_term, char *config,
2314 char *str, u64 num, int err_term, int err_val)
2316 struct parse_events_term *term;
2318 term = zalloc(sizeof(*term));
2322 INIT_LIST_HEAD(&term->list);
2323 term->type_val = type_val;
2324 term->type_term = type_term;
2325 term->config = config;
2326 term->err_term = err_term;
2327 term->err_val = err_val;
2330 case PARSE_EVENTS__TERM_TYPE_NUM:
2331 term->val.num = num;
2333 case PARSE_EVENTS__TERM_TYPE_STR:
2334 term->val.str = str;
2345 int parse_events_term__num(struct parse_events_term **term,
2346 int type_term, char *config, u64 num,
2347 void *loc_term_, void *loc_val_)
2349 YYLTYPE *loc_term = loc_term_;
2350 YYLTYPE *loc_val = loc_val_;
2352 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
2354 loc_term ? loc_term->first_column : 0,
2355 loc_val ? loc_val->first_column : 0);
2358 int parse_events_term__str(struct parse_events_term **term,
2359 int type_term, char *config, char *str,
2360 void *loc_term_, void *loc_val_)
2362 YYLTYPE *loc_term = loc_term_;
2363 YYLTYPE *loc_val = loc_val_;
2365 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
2367 loc_term ? loc_term->first_column : 0,
2368 loc_val ? loc_val->first_column : 0);
2371 int parse_events_term__sym_hw(struct parse_events_term **term,
2372 char *config, unsigned idx)
2374 struct event_symbol *sym;
2376 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2377 sym = &event_symbols_hw[idx];
2380 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2381 PARSE_EVENTS__TERM_TYPE_USER, config,
2382 (char *) sym->symbol, 0, 0, 0);
2384 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2385 PARSE_EVENTS__TERM_TYPE_USER,
2386 (char *) "event", (char *) sym->symbol,
2390 int parse_events_term__clone(struct parse_events_term **new,
2391 struct parse_events_term *term)
2393 return new_term(new, term->type_val, term->type_term, term->config,
2394 term->val.str, term->val.num,
2395 term->err_term, term->err_val);
2398 void parse_events_terms__purge(struct list_head *terms)
2400 struct parse_events_term *term, *h;
2402 list_for_each_entry_safe(term, h, terms, list) {
2403 if (term->array.nr_ranges)
2404 free(term->array.ranges);
2405 list_del_init(&term->list);
2410 void parse_events_terms__delete(struct list_head *terms)
2414 parse_events_terms__purge(terms);
2418 void parse_events__clear_array(struct parse_events_array *a)
2423 void parse_events_evlist_error(struct parse_events_evlist *data,
2424 int idx, const char *str)
2426 struct parse_events_error *err = data->error;
2431 err->str = strdup(str);
2432 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2435 static void config_terms_list(char *buf, size_t buf_sz)
2441 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2442 const char *name = config_term_names[i];
2444 if (!config_term_avail(i, NULL))
2451 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2463 * Return string contains valid config terms of an event.
2464 * @additional_terms: For terms such as PMU sysfs terms.
2466 char *parse_events_formats_error_string(char *additional_terms)
2469 /* "no-overwrite" is the longest name */
2470 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2471 (sizeof("no-overwrite") - 1)];
2473 config_terms_list(static_terms, sizeof(static_terms));
2475 if (additional_terms) {
2476 if (asprintf(&str, "valid terms: %s,%s",
2477 additional_terms, static_terms) < 0)
2480 if (asprintf(&str, "valid terms: %s", static_terms) < 0)