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"
25 #include "util/parse-branch-options.h"
27 #define MAX_NAME_LEN 100
30 extern int parse_events_debug;
32 int parse_events_parse(void *data, void *scanner);
33 static int get_config_terms(struct list_head *head_config,
34 struct list_head *head_terms __maybe_unused);
36 static struct perf_pmu_event_symbol *perf_pmu_events_list;
38 * The variable indicates the number of supported pmu event symbols.
39 * 0 means not initialized and ready to init
40 * -1 means failed to init, don't try anymore
41 * >0 is the number of supported pmu event symbols
43 static int perf_pmu_events_list_num;
45 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
46 [PERF_COUNT_HW_CPU_CYCLES] = {
47 .symbol = "cpu-cycles",
50 [PERF_COUNT_HW_INSTRUCTIONS] = {
51 .symbol = "instructions",
54 [PERF_COUNT_HW_CACHE_REFERENCES] = {
55 .symbol = "cache-references",
58 [PERF_COUNT_HW_CACHE_MISSES] = {
59 .symbol = "cache-misses",
62 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
63 .symbol = "branch-instructions",
66 [PERF_COUNT_HW_BRANCH_MISSES] = {
67 .symbol = "branch-misses",
70 [PERF_COUNT_HW_BUS_CYCLES] = {
71 .symbol = "bus-cycles",
74 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
75 .symbol = "stalled-cycles-frontend",
76 .alias = "idle-cycles-frontend",
78 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
79 .symbol = "stalled-cycles-backend",
80 .alias = "idle-cycles-backend",
82 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
83 .symbol = "ref-cycles",
88 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
89 [PERF_COUNT_SW_CPU_CLOCK] = {
90 .symbol = "cpu-clock",
93 [PERF_COUNT_SW_TASK_CLOCK] = {
94 .symbol = "task-clock",
97 [PERF_COUNT_SW_PAGE_FAULTS] = {
98 .symbol = "page-faults",
101 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
102 .symbol = "context-switches",
105 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
106 .symbol = "cpu-migrations",
107 .alias = "migrations",
109 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
110 .symbol = "minor-faults",
113 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
114 .symbol = "major-faults",
117 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
118 .symbol = "alignment-faults",
121 [PERF_COUNT_SW_EMULATION_FAULTS] = {
122 .symbol = "emulation-faults",
125 [PERF_COUNT_SW_DUMMY] = {
129 [PERF_COUNT_SW_BPF_OUTPUT] = {
130 .symbol = "bpf-output",
135 #define __PERF_EVENT_FIELD(config, name) \
136 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
138 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
139 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
140 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
141 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
143 #define for_each_subsystem(sys_dir, sys_dirent) \
144 while ((sys_dirent = readdir(sys_dir)) != NULL) \
145 if (sys_dirent->d_type == DT_DIR && \
146 (strcmp(sys_dirent->d_name, ".")) && \
147 (strcmp(sys_dirent->d_name, "..")))
149 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
151 char evt_path[MAXPATHLEN];
154 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
155 sys_dir->d_name, evt_dir->d_name);
156 fd = open(evt_path, O_RDONLY);
164 #define for_each_event(sys_dirent, evt_dir, evt_dirent) \
165 while ((evt_dirent = readdir(evt_dir)) != NULL) \
166 if (evt_dirent->d_type == DT_DIR && \
167 (strcmp(evt_dirent->d_name, ".")) && \
168 (strcmp(evt_dirent->d_name, "..")) && \
169 (!tp_event_has_id(sys_dirent, evt_dirent)))
171 #define MAX_EVENT_LENGTH 512
174 struct tracepoint_path *tracepoint_id_to_path(u64 config)
176 struct tracepoint_path *path = NULL;
177 DIR *sys_dir, *evt_dir;
178 struct dirent *sys_dirent, *evt_dirent;
182 char evt_path[MAXPATHLEN];
183 char dir_path[MAXPATHLEN];
185 sys_dir = opendir(tracing_events_path);
189 for_each_subsystem(sys_dir, sys_dirent) {
191 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
193 evt_dir = opendir(dir_path);
197 for_each_event(sys_dirent, evt_dir, evt_dirent) {
199 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
201 fd = open(evt_path, O_RDONLY);
204 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
213 path = zalloc(sizeof(*path));
214 path->system = malloc(MAX_EVENT_LENGTH);
219 path->name = malloc(MAX_EVENT_LENGTH);
221 zfree(&path->system);
225 strncpy(path->system, sys_dirent->d_name,
227 strncpy(path->name, evt_dirent->d_name,
239 struct tracepoint_path *tracepoint_name_to_path(const char *name)
241 struct tracepoint_path *path = zalloc(sizeof(*path));
242 char *str = strchr(name, ':');
244 if (path == NULL || str == NULL) {
249 path->system = strndup(name, str - name);
250 path->name = strdup(str+1);
252 if (path->system == NULL || path->name == NULL) {
253 zfree(&path->system);
262 const char *event_type(int type)
265 case PERF_TYPE_HARDWARE:
268 case PERF_TYPE_SOFTWARE:
271 case PERF_TYPE_TRACEPOINT:
274 case PERF_TYPE_HW_CACHE:
275 return "hardware-cache";
284 static int parse_events__is_name_term(struct parse_events_term *term)
286 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
289 static char *get_config_name(struct list_head *head_terms)
291 struct parse_events_term *term;
296 list_for_each_entry(term, head_terms, list)
297 if (parse_events__is_name_term(term))
298 return term->val.str;
303 static struct perf_evsel *
304 __add_event(struct list_head *list, int *idx,
305 struct perf_event_attr *attr,
306 char *name, struct cpu_map *cpus,
307 struct list_head *config_terms)
309 struct perf_evsel *evsel;
311 event_attr_init(attr);
313 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 if (strcmp(term->val.str, "no") &&
979 parse_branch_str(term->val.str, &attr->branch_sample_type)) {
980 err->str = strdup("invalid branch sample type");
981 err->idx = term->err_val;
985 case PARSE_EVENTS__TERM_TYPE_TIME:
987 if (term->val.num > 1) {
988 err->str = strdup("expected 0 or 1");
989 err->idx = term->err_val;
993 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
996 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
999 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1000 CHECK_TYPE_VAL(NUM);
1002 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1003 CHECK_TYPE_VAL(NUM);
1005 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1006 CHECK_TYPE_VAL(NUM);
1008 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1009 CHECK_TYPE_VAL(NUM);
1011 case PARSE_EVENTS__TERM_TYPE_NAME:
1012 CHECK_TYPE_VAL(STR);
1014 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1015 CHECK_TYPE_VAL(NUM);
1018 err->str = strdup("unknown term");
1019 err->idx = term->err_term;
1020 err->help = parse_events_formats_error_string(NULL);
1025 * Check term availbility after basic checking so
1026 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1028 * If check availbility at the entry of this function,
1029 * user will see "'<sysfs term>' is not usable in 'perf stat'"
1030 * if an invalid config term is provided for legacy events
1031 * (for example, instructions/badterm/...), which is confusing.
1033 if (!config_term_avail(term->type_term, err))
1036 #undef CHECK_TYPE_VAL
1039 static int config_term_pmu(struct perf_event_attr *attr,
1040 struct parse_events_term *term,
1041 struct parse_events_error *err)
1043 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1044 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1046 * Always succeed for sysfs terms, as we dont know
1047 * at this point what type they need to have.
1051 return config_term_common(attr, term, err);
1054 static int config_term_tracepoint(struct perf_event_attr *attr,
1055 struct parse_events_term *term,
1056 struct parse_events_error *err)
1058 switch (term->type_term) {
1059 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1060 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1061 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1062 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1063 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1064 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1065 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1066 return config_term_common(attr, term, err);
1069 err->idx = term->err_term;
1070 err->str = strdup("unknown term");
1071 err->help = strdup("valid terms: call-graph,stack-size\n");
1079 static int config_attr(struct perf_event_attr *attr,
1080 struct list_head *head,
1081 struct parse_events_error *err,
1082 config_term_func_t config_term)
1084 struct parse_events_term *term;
1086 list_for_each_entry(term, head, list)
1087 if (config_term(attr, term, err))
1093 static int get_config_terms(struct list_head *head_config,
1094 struct list_head *head_terms __maybe_unused)
1096 #define ADD_CONFIG_TERM(__type, __name, __val) \
1098 struct perf_evsel_config_term *__t; \
1100 __t = zalloc(sizeof(*__t)); \
1104 INIT_LIST_HEAD(&__t->list); \
1105 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1106 __t->val.__name = __val; \
1107 list_add_tail(&__t->list, head_terms); \
1110 struct parse_events_term *term;
1112 list_for_each_entry(term, head_config, list) {
1113 switch (term->type_term) {
1114 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1115 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1117 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1118 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1120 case PARSE_EVENTS__TERM_TYPE_TIME:
1121 ADD_CONFIG_TERM(TIME, time, term->val.num);
1123 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1124 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1126 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1127 ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
1129 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1130 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1132 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1133 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1135 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1136 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1138 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1139 ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1141 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1142 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1144 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1145 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1147 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1148 ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1154 #undef ADD_EVSEL_CONFIG
1158 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1159 const char *sys, const char *event,
1160 struct parse_events_error *err,
1161 struct list_head *head_config)
1164 struct perf_event_attr attr;
1166 if (config_attr(&attr, head_config, err,
1167 config_term_tracepoint))
1171 if (strpbrk(sys, "*?"))
1172 return add_tracepoint_multi_sys(list, idx, sys, event,
1175 return add_tracepoint_event(list, idx, sys, event,
1179 int parse_events_add_numeric(struct parse_events_evlist *data,
1180 struct list_head *list,
1181 u32 type, u64 config,
1182 struct list_head *head_config)
1184 struct perf_event_attr attr;
1185 LIST_HEAD(config_terms);
1187 memset(&attr, 0, sizeof(attr));
1189 attr.config = config;
1192 if (config_attr(&attr, head_config, data->error,
1193 config_term_common))
1196 if (get_config_terms(head_config, &config_terms))
1200 return add_event(list, &data->idx, &attr,
1201 get_config_name(head_config), &config_terms);
1204 int parse_events_add_pmu(struct parse_events_evlist *data,
1205 struct list_head *list, char *name,
1206 struct list_head *head_config)
1208 struct perf_event_attr attr;
1209 struct perf_pmu_info info;
1210 struct perf_pmu *pmu;
1211 struct perf_evsel *evsel;
1212 LIST_HEAD(config_terms);
1214 pmu = perf_pmu__find(name);
1218 if (pmu->default_config) {
1219 memcpy(&attr, pmu->default_config,
1220 sizeof(struct perf_event_attr));
1222 memset(&attr, 0, sizeof(attr));
1226 attr.type = pmu->type;
1227 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
1228 return evsel ? 0 : -ENOMEM;
1231 if (perf_pmu__check_alias(pmu, head_config, &info))
1235 * Configure hardcoded terms first, no need to check
1236 * return value when called with fail == 0 ;)
1238 if (config_attr(&attr, head_config, data->error, config_term_pmu))
1241 if (get_config_terms(head_config, &config_terms))
1244 if (perf_pmu__config(pmu, &attr, head_config, data->error))
1247 evsel = __add_event(list, &data->idx, &attr,
1248 get_config_name(head_config), pmu->cpus,
1251 evsel->unit = info.unit;
1252 evsel->scale = info.scale;
1253 evsel->per_pkg = info.per_pkg;
1254 evsel->snapshot = info.snapshot;
1257 return evsel ? 0 : -ENOMEM;
1260 int parse_events__modifier_group(struct list_head *list,
1263 return parse_events__modifier_event(list, event_mod, true);
1266 void parse_events__set_leader(char *name, struct list_head *list)
1268 struct perf_evsel *leader;
1270 if (list_empty(list)) {
1271 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1275 __perf_evlist__set_leader(list);
1276 leader = list_entry(list->next, struct perf_evsel, node);
1277 leader->group_name = name ? strdup(name) : NULL;
1280 /* list_event is assumed to point to malloc'ed memory */
1281 void parse_events_update_lists(struct list_head *list_event,
1282 struct list_head *list_all)
1285 * Called for single event definition. Update the
1286 * 'all event' list, and reinit the 'single event'
1287 * list, for next event definition.
1289 list_splice_tail(list_event, list_all);
1293 struct event_modifier {
1307 static int get_event_modifier(struct event_modifier *mod, char *str,
1308 struct perf_evsel *evsel)
1310 int eu = evsel ? evsel->attr.exclude_user : 0;
1311 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1312 int eh = evsel ? evsel->attr.exclude_hv : 0;
1313 int eH = evsel ? evsel->attr.exclude_host : 0;
1314 int eG = evsel ? evsel->attr.exclude_guest : 0;
1315 int eI = evsel ? evsel->attr.exclude_idle : 0;
1316 int precise = evsel ? evsel->attr.precise_ip : 0;
1317 int precise_max = 0;
1318 int sample_read = 0;
1319 int pinned = evsel ? evsel->attr.pinned : 0;
1321 int exclude = eu | ek | eh;
1322 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1324 memset(mod, 0, sizeof(*mod));
1329 exclude = eu = ek = eh = 1;
1331 } else if (*str == 'k') {
1333 exclude = eu = ek = eh = 1;
1335 } else if (*str == 'h') {
1337 exclude = eu = ek = eh = 1;
1339 } else if (*str == 'G') {
1341 exclude_GH = eG = eH = 1;
1343 } else if (*str == 'H') {
1345 exclude_GH = eG = eH = 1;
1347 } else if (*str == 'I') {
1349 } else if (*str == 'p') {
1351 /* use of precise requires exclude_guest */
1354 } else if (*str == 'P') {
1356 } else if (*str == 'S') {
1358 } else if (*str == 'D') {
1369 * 0 - SAMPLE_IP can have arbitrary skid
1370 * 1 - SAMPLE_IP must have constant skid
1371 * 2 - SAMPLE_IP requested to have 0 skid
1372 * 3 - SAMPLE_IP must have 0 skid
1374 * See also PERF_RECORD_MISC_EXACT_IP
1385 mod->precise = precise;
1386 mod->precise_max = precise_max;
1387 mod->exclude_GH = exclude_GH;
1388 mod->sample_read = sample_read;
1389 mod->pinned = pinned;
1395 * Basic modifier sanity check to validate it contains only one
1396 * instance of any modifier (apart from 'p') present.
1398 static int check_modifier(char *str)
1402 /* The sizeof includes 0 byte as well. */
1403 if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
1407 if (*p != 'p' && strchr(p + 1, *p))
1415 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1417 struct perf_evsel *evsel;
1418 struct event_modifier mod;
1423 if (check_modifier(str))
1426 if (!add && get_event_modifier(&mod, str, NULL))
1429 __evlist__for_each_entry(list, evsel) {
1430 if (add && get_event_modifier(&mod, str, evsel))
1433 evsel->attr.exclude_user = mod.eu;
1434 evsel->attr.exclude_kernel = mod.ek;
1435 evsel->attr.exclude_hv = mod.eh;
1436 evsel->attr.precise_ip = mod.precise;
1437 evsel->attr.exclude_host = mod.eH;
1438 evsel->attr.exclude_guest = mod.eG;
1439 evsel->attr.exclude_idle = mod.eI;
1440 evsel->exclude_GH = mod.exclude_GH;
1441 evsel->sample_read = mod.sample_read;
1442 evsel->precise_max = mod.precise_max;
1444 if (perf_evsel__is_group_leader(evsel))
1445 evsel->attr.pinned = mod.pinned;
1451 int parse_events_name(struct list_head *list, char *name)
1453 struct perf_evsel *evsel;
1455 __evlist__for_each_entry(list, evsel) {
1457 evsel->name = strdup(name);
1464 comp_pmu(const void *p1, const void *p2)
1466 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1467 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1469 return strcasecmp(pmu1->symbol, pmu2->symbol);
1472 static void perf_pmu__parse_cleanup(void)
1474 if (perf_pmu_events_list_num > 0) {
1475 struct perf_pmu_event_symbol *p;
1478 for (i = 0; i < perf_pmu_events_list_num; i++) {
1479 p = perf_pmu_events_list + i;
1482 free(perf_pmu_events_list);
1483 perf_pmu_events_list = NULL;
1484 perf_pmu_events_list_num = 0;
1488 #define SET_SYMBOL(str, stype) \
1497 * Read the pmu events list from sysfs
1498 * Save it into perf_pmu_events_list
1500 static void perf_pmu__parse_init(void)
1503 struct perf_pmu *pmu = NULL;
1504 struct perf_pmu_alias *alias;
1507 pmu = perf_pmu__find("cpu");
1508 if ((pmu == NULL) || list_empty(&pmu->aliases)) {
1509 perf_pmu_events_list_num = -1;
1512 list_for_each_entry(alias, &pmu->aliases, list) {
1513 if (strchr(alias->name, '-'))
1517 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1518 if (!perf_pmu_events_list)
1520 perf_pmu_events_list_num = len;
1523 list_for_each_entry(alias, &pmu->aliases, list) {
1524 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1525 char *tmp = strchr(alias->name, '-');
1528 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1529 PMU_EVENT_SYMBOL_PREFIX);
1531 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1534 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1538 qsort(perf_pmu_events_list, len,
1539 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1543 perf_pmu__parse_cleanup();
1546 enum perf_pmu_event_symbol_type
1547 perf_pmu__parse_check(const char *name)
1549 struct perf_pmu_event_symbol p, *r;
1551 /* scan kernel pmu events from sysfs if needed */
1552 if (perf_pmu_events_list_num == 0)
1553 perf_pmu__parse_init();
1555 * name "cpu" could be prefix of cpu-cycles or cpu// events.
1556 * cpu-cycles has been handled by hardcode.
1557 * So it must be cpu// events, not kernel pmu event.
1559 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1560 return PMU_EVENT_SYMBOL_ERR;
1562 p.symbol = strdup(name);
1563 r = bsearch(&p, perf_pmu_events_list,
1564 (size_t) perf_pmu_events_list_num,
1565 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1567 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1570 static int parse_events__scanner(const char *str, void *data, int start_token)
1572 YY_BUFFER_STATE buffer;
1576 ret = parse_events_lex_init_extra(start_token, &scanner);
1580 buffer = parse_events__scan_string(str, scanner);
1583 parse_events_debug = 1;
1585 ret = parse_events_parse(data, scanner);
1587 parse_events__flush_buffer(buffer, scanner);
1588 parse_events__delete_buffer(buffer, scanner);
1589 parse_events_lex_destroy(scanner);
1594 * parse event config string, return a list of event terms.
1596 int parse_events_terms(struct list_head *terms, const char *str)
1598 struct parse_events_terms data = {
1603 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1605 list_splice(data.terms, terms);
1610 parse_events_terms__delete(data.terms);
1614 int parse_events(struct perf_evlist *evlist, const char *str,
1615 struct parse_events_error *err)
1617 struct parse_events_evlist data = {
1618 .list = LIST_HEAD_INIT(data.list),
1619 .idx = evlist->nr_entries,
1625 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1626 perf_pmu__parse_cleanup();
1628 struct perf_evsel *last;
1630 if (list_empty(&data.list)) {
1631 WARN_ONCE(true, "WARNING: event parser found nothing");
1635 perf_evlist__splice_list_tail(evlist, &data.list);
1636 evlist->nr_groups += data.nr_groups;
1637 last = perf_evlist__last(evlist);
1638 last->cmdline_group_boundary = true;
1644 * There are 2 users - builtin-record and builtin-test objects.
1645 * Both call perf_evlist__delete in case of error, so we dont
1651 #define MAX_WIDTH 1000
1652 static int get_term_width(void)
1656 get_term_dimensions(&ws);
1657 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1660 static void parse_events_print_error(struct parse_events_error *err,
1663 const char *str = "invalid or unsupported event: ";
1664 char _buf[MAX_WIDTH];
1665 char *buf = (char *) event;
1669 /* -2 for extra '' in the final fprintf */
1670 int width = get_term_width() - 2;
1671 int len_event = strlen(event);
1672 int len_str, max_len, cut = 0;
1675 * Maximum error index indent, we will cut
1676 * the event string if it's bigger.
1678 int max_err_idx = 13;
1681 * Let's be specific with the message when
1682 * we have the precise error.
1684 str = "event syntax error: ";
1685 len_str = strlen(str);
1686 max_len = width - len_str;
1690 /* We're cutting from the beginning. */
1691 if (err->idx > max_err_idx)
1692 cut = err->idx - max_err_idx;
1694 strncpy(buf, event + cut, max_len);
1696 /* Mark cut parts with '..' on both sides. */
1698 buf[0] = buf[1] = '.';
1700 if ((len_event - cut) > max_len) {
1701 buf[max_len - 1] = buf[max_len - 2] = '.';
1705 idx = len_str + err->idx - cut;
1708 fprintf(stderr, "%s'%s'\n", str, buf);
1710 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1712 fprintf(stderr, "\n%s\n", err->help);
1717 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1722 int parse_events_option(const struct option *opt, const char *str,
1723 int unset __maybe_unused)
1725 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1726 struct parse_events_error err = { .idx = 0, };
1727 int ret = parse_events(evlist, str, &err);
1730 parse_events_print_error(&err, str);
1736 foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1737 int (*func)(struct perf_evsel *evsel,
1741 struct perf_evsel *last = NULL;
1745 * Don't return when list_empty, give func a chance to report
1746 * error when it found last == NULL.
1748 * So no need to WARN here, let *func do this.
1750 if (evlist->nr_entries > 0)
1751 last = perf_evlist__last(evlist);
1754 err = (*func)(last, arg);
1760 if (last->node.prev == &evlist->entries)
1762 last = list_entry(last->node.prev, struct perf_evsel, node);
1763 } while (!last->cmdline_group_boundary);
1768 static int set_filter(struct perf_evsel *evsel, const void *arg)
1770 const char *str = arg;
1772 int nr_addr_filters = 0;
1773 struct perf_pmu *pmu = NULL;
1778 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1779 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
1781 "not enough memory to hold filter string\n");
1788 while ((pmu = perf_pmu__scan(pmu)) != NULL)
1789 if (pmu->type == evsel->attr.type) {
1795 perf_pmu__scan_file(pmu, "nr_addr_filters",
1796 "%d", &nr_addr_filters);
1798 if (!nr_addr_filters)
1801 if (perf_evsel__append_addr_filter(evsel, str) < 0) {
1803 "not enough memory to hold filter string\n");
1811 "--filter option should follow a -e tracepoint or HW tracer option\n");
1816 int parse_filter(const struct option *opt, const char *str,
1817 int unset __maybe_unused)
1819 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1821 return foreach_evsel_in_last_glob(evlist, set_filter,
1825 static int add_exclude_perf_filter(struct perf_evsel *evsel,
1826 const void *arg __maybe_unused)
1828 char new_filter[64];
1830 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1832 "--exclude-perf option should follow a -e tracepoint option\n");
1836 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1838 if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
1840 "not enough memory to hold filter string\n");
1847 int exclude_perf(const struct option *opt,
1848 const char *arg __maybe_unused,
1849 int unset __maybe_unused)
1851 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1853 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1857 static const char * const event_type_descriptors[] = {
1861 "Hardware cache event",
1862 "Raw hardware event descriptor",
1863 "Hardware breakpoint",
1866 static int cmp_string(const void *a, const void *b)
1868 const char * const *as = a;
1869 const char * const *bs = b;
1871 return strcmp(*as, *bs);
1875 * Print the events from <debugfs_mount_point>/tracing/events
1878 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1881 DIR *sys_dir, *evt_dir;
1882 struct dirent *sys_dirent, *evt_dirent;
1883 char evt_path[MAXPATHLEN];
1884 char dir_path[MAXPATHLEN];
1885 char **evt_list = NULL;
1886 unsigned int evt_i = 0, evt_num = 0;
1887 bool evt_num_known = false;
1890 sys_dir = opendir(tracing_events_path);
1894 if (evt_num_known) {
1895 evt_list = zalloc(sizeof(char *) * evt_num);
1897 goto out_close_sys_dir;
1900 for_each_subsystem(sys_dir, sys_dirent) {
1901 if (subsys_glob != NULL &&
1902 !strglobmatch(sys_dirent->d_name, subsys_glob))
1905 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1906 sys_dirent->d_name);
1907 evt_dir = opendir(dir_path);
1911 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1912 if (event_glob != NULL &&
1913 !strglobmatch(evt_dirent->d_name, event_glob))
1916 if (!evt_num_known) {
1921 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1922 sys_dirent->d_name, evt_dirent->d_name);
1924 evt_list[evt_i] = strdup(evt_path);
1925 if (evt_list[evt_i] == NULL)
1926 goto out_close_evt_dir;
1933 if (!evt_num_known) {
1934 evt_num_known = true;
1937 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1939 while (evt_i < evt_num) {
1941 printf("%s ", evt_list[evt_i++]);
1944 printf(" %-50s [%s]\n", evt_list[evt_i++],
1945 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1947 if (evt_num && pager_in_use())
1952 for (evt_i = 0; evt_i < evt_num; evt_i++)
1953 zfree(&evt_list[evt_i]);
1962 printf("FATAL: not enough memory to print %s\n",
1963 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1969 * Check whether event is in <debugfs_mount_point>/tracing/events
1972 int is_valid_tracepoint(const char *event_string)
1974 DIR *sys_dir, *evt_dir;
1975 struct dirent *sys_dirent, *evt_dirent;
1976 char evt_path[MAXPATHLEN];
1977 char dir_path[MAXPATHLEN];
1979 sys_dir = opendir(tracing_events_path);
1983 for_each_subsystem(sys_dir, sys_dirent) {
1985 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1986 sys_dirent->d_name);
1987 evt_dir = opendir(dir_path);
1991 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1992 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1993 sys_dirent->d_name, evt_dirent->d_name);
1994 if (!strcmp(evt_path, event_string)) {
2006 static bool is_event_supported(u8 type, unsigned config)
2010 struct perf_evsel *evsel;
2011 struct perf_event_attr attr = {
2017 struct thread_map map;
2024 evsel = perf_evsel__new(&attr);
2026 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
2027 ret = open_return >= 0;
2029 if (open_return == -EACCES) {
2031 * This happens if the paranoid value
2032 * /proc/sys/kernel/perf_event_paranoid is set to 2
2033 * Re-run with exclude_kernel set; we don't do that
2034 * by default as some ARM machines do not support it.
2037 evsel->attr.exclude_kernel = 1;
2038 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
2040 perf_evsel__delete(evsel);
2046 void print_sdt_events(const char *subsys_glob, const char *event_glob,
2049 struct probe_cache *pcache;
2050 struct probe_cache_entry *ent;
2051 struct strlist *bidlist, *sdtlist;
2052 struct strlist_config cfg = {.dont_dupstr = true};
2053 struct str_node *nd, *nd2;
2054 char *buf, *path, *ptr = NULL;
2055 bool show_detail = false;
2058 sdtlist = strlist__new(NULL, &cfg);
2060 pr_debug("Failed to allocate new strlist for SDT\n");
2063 bidlist = build_id_cache__list_all(true);
2065 pr_debug("Failed to get buildids: %d\n", errno);
2068 strlist__for_each_entry(nd, bidlist) {
2069 pcache = probe_cache__new(nd->s);
2072 list_for_each_entry(ent, &pcache->entries, node) {
2076 !strglobmatch(ent->pev.group, subsys_glob))
2079 !strglobmatch(ent->pev.event, event_glob))
2081 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2082 ent->pev.event, nd->s);
2084 strlist__add(sdtlist, buf);
2086 probe_cache__delete(pcache);
2088 strlist__delete(bidlist);
2090 strlist__for_each_entry(nd, sdtlist) {
2091 buf = strchr(nd->s, '@');
2095 printf("%s ", nd->s);
2098 nd2 = strlist__next(nd);
2100 ptr = strchr(nd2->s, '@');
2103 if (strcmp(nd->s, nd2->s) == 0)
2107 path = build_id_cache__origname(buf);
2108 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2110 printf(" %-50s [%s]\n", buf, "SDT event");
2114 printf(" %-50s [%s]\n", nd->s, "SDT event");
2116 if (strcmp(nd->s, nd2->s) != 0)
2117 show_detail = false;
2122 strlist__delete(sdtlist);
2125 int print_hwcache_events(const char *event_glob, bool name_only)
2127 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2129 char **evt_list = NULL;
2130 bool evt_num_known = false;
2133 if (evt_num_known) {
2134 evt_list = zalloc(sizeof(char *) * evt_num);
2139 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2140 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2141 /* skip invalid cache type */
2142 if (!perf_evsel__is_cache_op_valid(type, op))
2145 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2146 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2147 name, sizeof(name));
2148 if (event_glob != NULL && !strglobmatch(name, event_glob))
2151 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2152 type | (op << 8) | (i << 16)))
2155 if (!evt_num_known) {
2160 evt_list[evt_i] = strdup(name);
2161 if (evt_list[evt_i] == NULL)
2168 if (!evt_num_known) {
2169 evt_num_known = true;
2172 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2174 while (evt_i < evt_num) {
2176 printf("%s ", evt_list[evt_i++]);
2179 printf(" %-50s [%s]\n", evt_list[evt_i++],
2180 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2182 if (evt_num && pager_in_use())
2187 for (evt_i = 0; evt_i < evt_num; evt_i++)
2188 zfree(&evt_list[evt_i]);
2193 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2199 void print_symbol_events(const char *event_glob, unsigned type,
2200 struct event_symbol *syms, unsigned max,
2203 unsigned int i, evt_i = 0, evt_num = 0;
2204 char name[MAX_NAME_LEN];
2205 char **evt_list = NULL;
2206 bool evt_num_known = false;
2209 if (evt_num_known) {
2210 evt_list = zalloc(sizeof(char *) * evt_num);
2216 for (i = 0; i < max; i++, syms++) {
2218 if (event_glob != NULL && syms->symbol != NULL &&
2219 !(strglobmatch(syms->symbol, event_glob) ||
2220 (syms->alias && strglobmatch(syms->alias, event_glob))))
2223 if (!is_event_supported(type, i))
2226 if (!evt_num_known) {
2231 if (!name_only && strlen(syms->alias))
2232 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2234 strncpy(name, syms->symbol, MAX_NAME_LEN);
2236 evt_list[evt_i] = strdup(name);
2237 if (evt_list[evt_i] == NULL)
2242 if (!evt_num_known) {
2243 evt_num_known = true;
2246 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2248 while (evt_i < evt_num) {
2250 printf("%s ", evt_list[evt_i++]);
2253 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2255 if (evt_num && pager_in_use())
2260 for (evt_i = 0; evt_i < evt_num; evt_i++)
2261 zfree(&evt_list[evt_i]);
2266 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2272 * Print the help text for the event symbols:
2274 void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2277 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2278 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2280 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2281 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2283 print_hwcache_events(event_glob, name_only);
2285 print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
2287 if (event_glob != NULL)
2291 printf(" %-50s [%s]\n",
2293 event_type_descriptors[PERF_TYPE_RAW]);
2294 printf(" %-50s [%s]\n",
2295 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2296 event_type_descriptors[PERF_TYPE_RAW]);
2298 printf(" (see 'man perf-list' on how to encode it)\n\n");
2300 printf(" %-50s [%s]\n",
2301 "mem:<addr>[/len][:access]",
2302 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2307 print_tracepoint_events(NULL, NULL, name_only);
2309 print_sdt_events(NULL, NULL, name_only);
2312 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2314 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2317 static int new_term(struct parse_events_term **_term, int type_val,
2318 int type_term, char *config,
2319 char *str, u64 num, int err_term, int err_val)
2321 struct parse_events_term *term;
2323 term = zalloc(sizeof(*term));
2327 INIT_LIST_HEAD(&term->list);
2328 term->type_val = type_val;
2329 term->type_term = type_term;
2330 term->config = config;
2331 term->err_term = err_term;
2332 term->err_val = err_val;
2335 case PARSE_EVENTS__TERM_TYPE_NUM:
2336 term->val.num = num;
2338 case PARSE_EVENTS__TERM_TYPE_STR:
2339 term->val.str = str;
2350 int parse_events_term__num(struct parse_events_term **term,
2351 int type_term, char *config, u64 num,
2352 void *loc_term_, void *loc_val_)
2354 YYLTYPE *loc_term = loc_term_;
2355 YYLTYPE *loc_val = loc_val_;
2357 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
2359 loc_term ? loc_term->first_column : 0,
2360 loc_val ? loc_val->first_column : 0);
2363 int parse_events_term__str(struct parse_events_term **term,
2364 int type_term, char *config, char *str,
2365 void *loc_term_, void *loc_val_)
2367 YYLTYPE *loc_term = loc_term_;
2368 YYLTYPE *loc_val = loc_val_;
2370 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
2372 loc_term ? loc_term->first_column : 0,
2373 loc_val ? loc_val->first_column : 0);
2376 int parse_events_term__sym_hw(struct parse_events_term **term,
2377 char *config, unsigned idx)
2379 struct event_symbol *sym;
2381 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2382 sym = &event_symbols_hw[idx];
2385 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2386 PARSE_EVENTS__TERM_TYPE_USER, config,
2387 (char *) sym->symbol, 0, 0, 0);
2389 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2390 PARSE_EVENTS__TERM_TYPE_USER,
2391 (char *) "event", (char *) sym->symbol,
2395 int parse_events_term__clone(struct parse_events_term **new,
2396 struct parse_events_term *term)
2398 return new_term(new, term->type_val, term->type_term, term->config,
2399 term->val.str, term->val.num,
2400 term->err_term, term->err_val);
2403 void parse_events_terms__purge(struct list_head *terms)
2405 struct parse_events_term *term, *h;
2407 list_for_each_entry_safe(term, h, terms, list) {
2408 if (term->array.nr_ranges)
2409 free(term->array.ranges);
2410 list_del_init(&term->list);
2415 void parse_events_terms__delete(struct list_head *terms)
2419 parse_events_terms__purge(terms);
2423 void parse_events__clear_array(struct parse_events_array *a)
2428 void parse_events_evlist_error(struct parse_events_evlist *data,
2429 int idx, const char *str)
2431 struct parse_events_error *err = data->error;
2436 err->str = strdup(str);
2437 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2440 static void config_terms_list(char *buf, size_t buf_sz)
2446 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2447 const char *name = config_term_names[i];
2449 if (!config_term_avail(i, NULL))
2456 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2468 * Return string contains valid config terms of an event.
2469 * @additional_terms: For terms such as PMU sysfs terms.
2471 char *parse_events_formats_error_string(char *additional_terms)
2474 /* "no-overwrite" is the longest name */
2475 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2476 (sizeof("no-overwrite") - 1)];
2478 config_terms_list(static_terms, sizeof(static_terms));
2480 if (additional_terms) {
2481 if (asprintf(&str, "valid terms: %s,%s",
2482 additional_terms, static_terms) < 0)
2485 if (asprintf(&str, "valid terms: %s", static_terms) < 0)