1 #include <linux/hw_breakpoint.h>
7 #include "parse-options.h"
8 #include "parse-events.h"
15 #include <api/fs/tracing_path.h>
16 #include "parse-events-bison.h"
17 #define YY_EXTRA_TYPE int
18 #include "parse-events-flex.h"
20 #include "thread_map.h"
24 #define MAX_NAME_LEN 100
27 extern int parse_events_debug;
29 int parse_events_parse(void *data, void *scanner);
31 static struct perf_pmu_event_symbol *perf_pmu_events_list;
33 * The variable indicates the number of supported pmu event symbols.
34 * 0 means not initialized and ready to init
35 * -1 means failed to init, don't try anymore
36 * >0 is the number of supported pmu event symbols
38 static int perf_pmu_events_list_num;
40 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
41 [PERF_COUNT_HW_CPU_CYCLES] = {
42 .symbol = "cpu-cycles",
45 [PERF_COUNT_HW_INSTRUCTIONS] = {
46 .symbol = "instructions",
49 [PERF_COUNT_HW_CACHE_REFERENCES] = {
50 .symbol = "cache-references",
53 [PERF_COUNT_HW_CACHE_MISSES] = {
54 .symbol = "cache-misses",
57 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
58 .symbol = "branch-instructions",
61 [PERF_COUNT_HW_BRANCH_MISSES] = {
62 .symbol = "branch-misses",
65 [PERF_COUNT_HW_BUS_CYCLES] = {
66 .symbol = "bus-cycles",
69 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
70 .symbol = "stalled-cycles-frontend",
71 .alias = "idle-cycles-frontend",
73 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
74 .symbol = "stalled-cycles-backend",
75 .alias = "idle-cycles-backend",
77 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
78 .symbol = "ref-cycles",
83 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
84 [PERF_COUNT_SW_CPU_CLOCK] = {
85 .symbol = "cpu-clock",
88 [PERF_COUNT_SW_TASK_CLOCK] = {
89 .symbol = "task-clock",
92 [PERF_COUNT_SW_PAGE_FAULTS] = {
93 .symbol = "page-faults",
96 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
97 .symbol = "context-switches",
100 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
101 .symbol = "cpu-migrations",
102 .alias = "migrations",
104 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
105 .symbol = "minor-faults",
108 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
109 .symbol = "major-faults",
112 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
113 .symbol = "alignment-faults",
116 [PERF_COUNT_SW_EMULATION_FAULTS] = {
117 .symbol = "emulation-faults",
120 [PERF_COUNT_SW_DUMMY] = {
126 #define __PERF_EVENT_FIELD(config, name) \
127 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
129 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
130 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
131 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
132 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
134 #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
135 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
136 if (sys_dirent.d_type == DT_DIR && \
137 (strcmp(sys_dirent.d_name, ".")) && \
138 (strcmp(sys_dirent.d_name, "..")))
140 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
142 char evt_path[MAXPATHLEN];
145 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
146 sys_dir->d_name, evt_dir->d_name);
147 fd = open(evt_path, O_RDONLY);
155 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
156 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
157 if (evt_dirent.d_type == DT_DIR && \
158 (strcmp(evt_dirent.d_name, ".")) && \
159 (strcmp(evt_dirent.d_name, "..")) && \
160 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
162 #define MAX_EVENT_LENGTH 512
165 struct tracepoint_path *tracepoint_id_to_path(u64 config)
167 struct tracepoint_path *path = NULL;
168 DIR *sys_dir, *evt_dir;
169 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
173 char evt_path[MAXPATHLEN];
174 char dir_path[MAXPATHLEN];
176 sys_dir = opendir(tracing_events_path);
180 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
182 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
184 evt_dir = opendir(dir_path);
188 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
190 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
192 fd = open(evt_path, O_RDONLY);
195 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
204 path = zalloc(sizeof(*path));
205 path->system = malloc(MAX_EVENT_LENGTH);
210 path->name = malloc(MAX_EVENT_LENGTH);
212 zfree(&path->system);
216 strncpy(path->system, sys_dirent.d_name,
218 strncpy(path->name, evt_dirent.d_name,
230 struct tracepoint_path *tracepoint_name_to_path(const char *name)
232 struct tracepoint_path *path = zalloc(sizeof(*path));
233 char *str = strchr(name, ':');
235 if (path == NULL || str == NULL) {
240 path->system = strndup(name, str - name);
241 path->name = strdup(str+1);
243 if (path->system == NULL || path->name == NULL) {
244 zfree(&path->system);
253 const char *event_type(int type)
256 case PERF_TYPE_HARDWARE:
259 case PERF_TYPE_SOFTWARE:
262 case PERF_TYPE_TRACEPOINT:
265 case PERF_TYPE_HW_CACHE:
266 return "hardware-cache";
277 static struct perf_evsel *
278 __add_event(struct list_head *list, int *idx,
279 struct perf_event_attr *attr,
280 char *name, struct cpu_map *cpus,
281 struct list_head *config_terms)
283 struct perf_evsel *evsel;
285 event_attr_init(attr);
287 evsel = perf_evsel__new_idx(attr, (*idx)++);
291 evsel->cpus = cpu_map__get(cpus);
292 evsel->own_cpus = cpu_map__get(cpus);
295 evsel->name = strdup(name);
298 list_splice(config_terms, &evsel->config_terms);
300 list_add_tail(&evsel->node, list);
304 static int add_event(struct list_head *list, int *idx,
305 struct perf_event_attr *attr, char *name,
306 struct list_head *config_terms)
308 return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM;
311 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
316 for (i = 0; i < size; i++) {
317 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
318 n = strlen(names[i][j]);
319 if (n > longest && !strncasecmp(str, names[i][j], n))
329 int parse_events_add_cache(struct list_head *list, int *idx,
330 char *type, char *op_result1, char *op_result2)
332 struct perf_event_attr attr;
333 char name[MAX_NAME_LEN];
334 int cache_type = -1, cache_op = -1, cache_result = -1;
335 char *op_result[2] = { op_result1, op_result2 };
339 * No fallback - if we cannot get a clear cache type
342 cache_type = parse_aliases(type, perf_evsel__hw_cache,
343 PERF_COUNT_HW_CACHE_MAX);
344 if (cache_type == -1)
347 n = snprintf(name, MAX_NAME_LEN, "%s", type);
349 for (i = 0; (i < 2) && (op_result[i]); i++) {
350 char *str = op_result[i];
352 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
354 if (cache_op == -1) {
355 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
356 PERF_COUNT_HW_CACHE_OP_MAX);
358 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
364 if (cache_result == -1) {
365 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
366 PERF_COUNT_HW_CACHE_RESULT_MAX);
367 if (cache_result >= 0)
373 * Fall back to reads:
376 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
379 * Fall back to accesses:
381 if (cache_result == -1)
382 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
384 memset(&attr, 0, sizeof(attr));
385 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
386 attr.type = PERF_TYPE_HW_CACHE;
387 return add_event(list, idx, &attr, name, NULL);
390 static void tracepoint_error(struct parse_events_error *error, int err,
391 char *sys, char *name)
396 * We get error directly from syscall errno ( > 0),
397 * or from encoded pointer's error ( < 0).
403 error->str = strdup("can't access trace events");
406 error->str = strdup("unknown tracepoint");
409 error->str = strdup("failed to add tracepoint");
413 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
414 error->help = strdup(help);
417 static int add_tracepoint(struct list_head *list, int *idx,
418 char *sys_name, char *evt_name,
419 struct parse_events_error *error __maybe_unused)
421 struct perf_evsel *evsel;
423 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
425 tracepoint_error(error, PTR_ERR(evsel), sys_name, evt_name);
426 return PTR_ERR(evsel);
429 list_add_tail(&evsel->node, list);
433 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
434 char *sys_name, char *evt_name,
435 struct parse_events_error *error)
437 char evt_path[MAXPATHLEN];
438 struct dirent *evt_ent;
442 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
443 evt_dir = opendir(evt_path);
445 tracepoint_error(error, errno, sys_name, evt_name);
449 while (!ret && (evt_ent = readdir(evt_dir))) {
450 if (!strcmp(evt_ent->d_name, ".")
451 || !strcmp(evt_ent->d_name, "..")
452 || !strcmp(evt_ent->d_name, "enable")
453 || !strcmp(evt_ent->d_name, "filter"))
456 if (!strglobmatch(evt_ent->d_name, evt_name))
459 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, error);
466 static int add_tracepoint_event(struct list_head *list, int *idx,
467 char *sys_name, char *evt_name,
468 struct parse_events_error *error)
470 return strpbrk(evt_name, "*?") ?
471 add_tracepoint_multi_event(list, idx, sys_name, evt_name, error) :
472 add_tracepoint(list, idx, sys_name, evt_name, error);
475 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
476 char *sys_name, char *evt_name,
477 struct parse_events_error *error)
479 struct dirent *events_ent;
483 events_dir = opendir(tracing_events_path);
485 tracepoint_error(error, errno, sys_name, evt_name);
489 while (!ret && (events_ent = readdir(events_dir))) {
490 if (!strcmp(events_ent->d_name, ".")
491 || !strcmp(events_ent->d_name, "..")
492 || !strcmp(events_ent->d_name, "enable")
493 || !strcmp(events_ent->d_name, "header_event")
494 || !strcmp(events_ent->d_name, "header_page"))
497 if (!strglobmatch(events_ent->d_name, sys_name))
500 ret = add_tracepoint_event(list, idx, events_ent->d_name,
504 closedir(events_dir);
508 int parse_events_add_tracepoint(struct list_head *list, int *idx,
509 char *sys, char *event,
510 struct parse_events_error *error)
512 if (strpbrk(sys, "*?"))
513 return add_tracepoint_multi_sys(list, idx, sys, event, error);
515 return add_tracepoint_event(list, idx, sys, event, error);
519 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
523 for (i = 0; i < 3; i++) {
524 if (!type || !type[i])
527 #define CHECK_SET_TYPE(bit) \
529 if (attr->bp_type & bit) \
532 attr->bp_type |= bit; \
537 CHECK_SET_TYPE(HW_BREAKPOINT_R);
540 CHECK_SET_TYPE(HW_BREAKPOINT_W);
543 CHECK_SET_TYPE(HW_BREAKPOINT_X);
550 #undef CHECK_SET_TYPE
552 if (!attr->bp_type) /* Default */
553 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
558 int parse_events_add_breakpoint(struct list_head *list, int *idx,
559 void *ptr, char *type, u64 len)
561 struct perf_event_attr attr;
563 memset(&attr, 0, sizeof(attr));
564 attr.bp_addr = (unsigned long) ptr;
566 if (parse_breakpoint_type(type, &attr))
569 /* Provide some defaults if len is not specified */
571 if (attr.bp_type == HW_BREAKPOINT_X)
574 len = HW_BREAKPOINT_LEN_4;
579 attr.type = PERF_TYPE_BREAKPOINT;
580 attr.sample_period = 1;
582 return add_event(list, idx, &attr, NULL, NULL);
585 static int check_type_val(struct parse_events_term *term,
586 struct parse_events_error *err,
589 if (type == term->type_val)
593 err->idx = term->err_val;
594 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
595 err->str = strdup("expected numeric value");
597 err->str = strdup("expected string value");
602 static int config_term(struct perf_event_attr *attr,
603 struct parse_events_term *term,
604 struct parse_events_error *err)
606 #define CHECK_TYPE_VAL(type) \
608 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
612 switch (term->type_term) {
613 case PARSE_EVENTS__TERM_TYPE_USER:
615 * Always succeed for sysfs terms, as we dont know
616 * at this point what type they need to have.
619 case PARSE_EVENTS__TERM_TYPE_CONFIG:
621 attr->config = term->val.num;
623 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
625 attr->config1 = term->val.num;
627 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
629 attr->config2 = term->val.num;
631 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
634 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
637 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
639 * TODO uncomment when the field is available
640 * attr->branch_sample_type = term->val.num;
643 case PARSE_EVENTS__TERM_TYPE_TIME:
645 if (term->val.num > 1) {
646 err->str = strdup("expected 0 or 1");
647 err->idx = term->err_val;
651 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
654 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
657 case PARSE_EVENTS__TERM_TYPE_NAME:
665 #undef CHECK_TYPE_VAL
668 static int config_attr(struct perf_event_attr *attr,
669 struct list_head *head,
670 struct parse_events_error *err)
672 struct parse_events_term *term;
674 list_for_each_entry(term, head, list)
675 if (config_term(attr, term, err))
681 static int get_config_terms(struct list_head *head_config,
682 struct list_head *head_terms __maybe_unused)
684 #define ADD_CONFIG_TERM(__type, __name, __val) \
686 struct perf_evsel_config_term *__t; \
688 __t = zalloc(sizeof(*__t)); \
692 INIT_LIST_HEAD(&__t->list); \
693 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
694 __t->val.__name = __val; \
695 list_add_tail(&__t->list, head_terms); \
698 struct parse_events_term *term;
700 list_for_each_entry(term, head_config, list) {
701 switch (term->type_term) {
702 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
703 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
705 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
706 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
708 case PARSE_EVENTS__TERM_TYPE_TIME:
709 ADD_CONFIG_TERM(TIME, time, term->val.num);
711 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
712 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
714 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
715 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
721 #undef ADD_EVSEL_CONFIG
725 int parse_events_add_numeric(struct parse_events_evlist *data,
726 struct list_head *list,
727 u32 type, u64 config,
728 struct list_head *head_config)
730 struct perf_event_attr attr;
731 LIST_HEAD(config_terms);
733 memset(&attr, 0, sizeof(attr));
735 attr.config = config;
738 if (config_attr(&attr, head_config, data->error))
741 if (get_config_terms(head_config, &config_terms))
745 return add_event(list, &data->idx, &attr, NULL, &config_terms);
748 static int parse_events__is_name_term(struct parse_events_term *term)
750 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
753 static char *pmu_event_name(struct list_head *head_terms)
755 struct parse_events_term *term;
757 list_for_each_entry(term, head_terms, list)
758 if (parse_events__is_name_term(term))
759 return term->val.str;
764 int parse_events_add_pmu(struct parse_events_evlist *data,
765 struct list_head *list, char *name,
766 struct list_head *head_config)
768 struct perf_event_attr attr;
769 struct perf_pmu_info info;
770 struct perf_pmu *pmu;
771 struct perf_evsel *evsel;
772 LIST_HEAD(config_terms);
774 pmu = perf_pmu__find(name);
778 if (pmu->default_config) {
779 memcpy(&attr, pmu->default_config,
780 sizeof(struct perf_event_attr));
782 memset(&attr, 0, sizeof(attr));
786 attr.type = pmu->type;
787 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
788 return evsel ? 0 : -ENOMEM;
791 if (perf_pmu__check_alias(pmu, head_config, &info))
795 * Configure hardcoded terms first, no need to check
796 * return value when called with fail == 0 ;)
798 if (config_attr(&attr, head_config, data->error))
801 if (get_config_terms(head_config, &config_terms))
804 if (perf_pmu__config(pmu, &attr, head_config, data->error))
807 evsel = __add_event(list, &data->idx, &attr,
808 pmu_event_name(head_config), pmu->cpus,
811 evsel->unit = info.unit;
812 evsel->scale = info.scale;
813 evsel->per_pkg = info.per_pkg;
814 evsel->snapshot = info.snapshot;
817 return evsel ? 0 : -ENOMEM;
820 int parse_events__modifier_group(struct list_head *list,
823 return parse_events__modifier_event(list, event_mod, true);
826 void parse_events__set_leader(char *name, struct list_head *list)
828 struct perf_evsel *leader;
830 __perf_evlist__set_leader(list);
831 leader = list_entry(list->next, struct perf_evsel, node);
832 leader->group_name = name ? strdup(name) : NULL;
835 /* list_event is assumed to point to malloc'ed memory */
836 void parse_events_update_lists(struct list_head *list_event,
837 struct list_head *list_all)
840 * Called for single event definition. Update the
841 * 'all event' list, and reinit the 'single event'
842 * list, for next event definition.
844 list_splice_tail(list_event, list_all);
848 struct event_modifier {
861 static int get_event_modifier(struct event_modifier *mod, char *str,
862 struct perf_evsel *evsel)
864 int eu = evsel ? evsel->attr.exclude_user : 0;
865 int ek = evsel ? evsel->attr.exclude_kernel : 0;
866 int eh = evsel ? evsel->attr.exclude_hv : 0;
867 int eH = evsel ? evsel->attr.exclude_host : 0;
868 int eG = evsel ? evsel->attr.exclude_guest : 0;
869 int eI = evsel ? evsel->attr.exclude_idle : 0;
870 int precise = evsel ? evsel->attr.precise_ip : 0;
872 int pinned = evsel ? evsel->attr.pinned : 0;
874 int exclude = eu | ek | eh;
875 int exclude_GH = evsel ? evsel->exclude_GH : 0;
877 memset(mod, 0, sizeof(*mod));
882 exclude = eu = ek = eh = 1;
884 } else if (*str == 'k') {
886 exclude = eu = ek = eh = 1;
888 } else if (*str == 'h') {
890 exclude = eu = ek = eh = 1;
892 } else if (*str == 'G') {
894 exclude_GH = eG = eH = 1;
896 } else if (*str == 'H') {
898 exclude_GH = eG = eH = 1;
900 } else if (*str == 'I') {
902 } else if (*str == 'p') {
904 /* use of precise requires exclude_guest */
907 } else if (*str == 'S') {
909 } else if (*str == 'D') {
920 * 0 - SAMPLE_IP can have arbitrary skid
921 * 1 - SAMPLE_IP must have constant skid
922 * 2 - SAMPLE_IP requested to have 0 skid
923 * 3 - SAMPLE_IP must have 0 skid
925 * See also PERF_RECORD_MISC_EXACT_IP
936 mod->precise = precise;
937 mod->exclude_GH = exclude_GH;
938 mod->sample_read = sample_read;
939 mod->pinned = pinned;
945 * Basic modifier sanity check to validate it contains only one
946 * instance of any modifier (apart from 'p') present.
948 static int check_modifier(char *str)
952 /* The sizeof includes 0 byte as well. */
953 if (strlen(str) > (sizeof("ukhGHpppSDI") - 1))
957 if (*p != 'p' && strchr(p + 1, *p))
965 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
967 struct perf_evsel *evsel;
968 struct event_modifier mod;
973 if (check_modifier(str))
976 if (!add && get_event_modifier(&mod, str, NULL))
979 __evlist__for_each(list, evsel) {
980 if (add && get_event_modifier(&mod, str, evsel))
983 evsel->attr.exclude_user = mod.eu;
984 evsel->attr.exclude_kernel = mod.ek;
985 evsel->attr.exclude_hv = mod.eh;
986 evsel->attr.precise_ip = mod.precise;
987 evsel->attr.exclude_host = mod.eH;
988 evsel->attr.exclude_guest = mod.eG;
989 evsel->attr.exclude_idle = mod.eI;
990 evsel->exclude_GH = mod.exclude_GH;
991 evsel->sample_read = mod.sample_read;
993 if (perf_evsel__is_group_leader(evsel))
994 evsel->attr.pinned = mod.pinned;
1000 int parse_events_name(struct list_head *list, char *name)
1002 struct perf_evsel *evsel;
1004 __evlist__for_each(list, evsel) {
1006 evsel->name = strdup(name);
1013 comp_pmu(const void *p1, const void *p2)
1015 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1016 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1018 return strcmp(pmu1->symbol, pmu2->symbol);
1021 static void perf_pmu__parse_cleanup(void)
1023 if (perf_pmu_events_list_num > 0) {
1024 struct perf_pmu_event_symbol *p;
1027 for (i = 0; i < perf_pmu_events_list_num; i++) {
1028 p = perf_pmu_events_list + i;
1031 free(perf_pmu_events_list);
1032 perf_pmu_events_list = NULL;
1033 perf_pmu_events_list_num = 0;
1037 #define SET_SYMBOL(str, stype) \
1046 * Read the pmu events list from sysfs
1047 * Save it into perf_pmu_events_list
1049 static void perf_pmu__parse_init(void)
1052 struct perf_pmu *pmu = NULL;
1053 struct perf_pmu_alias *alias;
1056 pmu = perf_pmu__find("cpu");
1057 if ((pmu == NULL) || list_empty(&pmu->aliases)) {
1058 perf_pmu_events_list_num = -1;
1061 list_for_each_entry(alias, &pmu->aliases, list) {
1062 if (strchr(alias->name, '-'))
1066 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1067 if (!perf_pmu_events_list)
1069 perf_pmu_events_list_num = len;
1072 list_for_each_entry(alias, &pmu->aliases, list) {
1073 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1074 char *tmp = strchr(alias->name, '-');
1077 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1078 PMU_EVENT_SYMBOL_PREFIX);
1080 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1083 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1087 qsort(perf_pmu_events_list, len,
1088 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1092 perf_pmu__parse_cleanup();
1095 enum perf_pmu_event_symbol_type
1096 perf_pmu__parse_check(const char *name)
1098 struct perf_pmu_event_symbol p, *r;
1100 /* scan kernel pmu events from sysfs if needed */
1101 if (perf_pmu_events_list_num == 0)
1102 perf_pmu__parse_init();
1104 * name "cpu" could be prefix of cpu-cycles or cpu// events.
1105 * cpu-cycles has been handled by hardcode.
1106 * So it must be cpu// events, not kernel pmu event.
1108 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1109 return PMU_EVENT_SYMBOL_ERR;
1111 p.symbol = strdup(name);
1112 r = bsearch(&p, perf_pmu_events_list,
1113 (size_t) perf_pmu_events_list_num,
1114 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1116 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1119 static int parse_events__scanner(const char *str, void *data, int start_token)
1121 YY_BUFFER_STATE buffer;
1125 ret = parse_events_lex_init_extra(start_token, &scanner);
1129 buffer = parse_events__scan_string(str, scanner);
1132 parse_events_debug = 1;
1134 ret = parse_events_parse(data, scanner);
1136 parse_events__flush_buffer(buffer, scanner);
1137 parse_events__delete_buffer(buffer, scanner);
1138 parse_events_lex_destroy(scanner);
1143 * parse event config string, return a list of event terms.
1145 int parse_events_terms(struct list_head *terms, const char *str)
1147 struct parse_events_terms data = {
1152 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1154 list_splice(data.terms, terms);
1160 parse_events__free_terms(data.terms);
1164 int parse_events(struct perf_evlist *evlist, const char *str,
1165 struct parse_events_error *err)
1167 struct parse_events_evlist data = {
1168 .list = LIST_HEAD_INIT(data.list),
1169 .idx = evlist->nr_entries,
1174 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1175 perf_pmu__parse_cleanup();
1177 struct perf_evsel *last;
1179 perf_evlist__splice_list_tail(evlist, &data.list);
1180 evlist->nr_groups += data.nr_groups;
1181 last = perf_evlist__last(evlist);
1182 last->cmdline_group_boundary = true;
1188 * There are 2 users - builtin-record and builtin-test objects.
1189 * Both call perf_evlist__delete in case of error, so we dont
1195 #define MAX_WIDTH 1000
1196 static int get_term_width(void)
1200 get_term_dimensions(&ws);
1201 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1204 static void parse_events_print_error(struct parse_events_error *err,
1207 const char *str = "invalid or unsupported event: ";
1208 char _buf[MAX_WIDTH];
1209 char *buf = (char *) event;
1213 /* -2 for extra '' in the final fprintf */
1214 int width = get_term_width() - 2;
1215 int len_event = strlen(event);
1216 int len_str, max_len, cut = 0;
1219 * Maximum error index indent, we will cut
1220 * the event string if it's bigger.
1222 int max_err_idx = 13;
1225 * Let's be specific with the message when
1226 * we have the precise error.
1228 str = "event syntax error: ";
1229 len_str = strlen(str);
1230 max_len = width - len_str;
1234 /* We're cutting from the beggining. */
1235 if (err->idx > max_err_idx)
1236 cut = err->idx - max_err_idx;
1238 strncpy(buf, event + cut, max_len);
1240 /* Mark cut parts with '..' on both sides. */
1242 buf[0] = buf[1] = '.';
1244 if ((len_event - cut) > max_len) {
1245 buf[max_len - 1] = buf[max_len - 2] = '.';
1249 idx = len_str + err->idx - cut;
1252 fprintf(stderr, "%s'%s'\n", str, buf);
1254 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1256 fprintf(stderr, "\n%s\n", err->help);
1261 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1266 int parse_events_option(const struct option *opt, const char *str,
1267 int unset __maybe_unused)
1269 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1270 struct parse_events_error err = { .idx = 0, };
1271 int ret = parse_events(evlist, str, &err);
1274 parse_events_print_error(&err, str);
1280 foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1281 int (*func)(struct perf_evsel *evsel,
1285 struct perf_evsel *last = NULL;
1288 if (evlist->nr_entries > 0)
1289 last = perf_evlist__last(evlist);
1292 err = (*func)(last, arg);
1298 if (last->node.prev == &evlist->entries)
1300 last = list_entry(last->node.prev, struct perf_evsel, node);
1301 } while (!last->cmdline_group_boundary);
1306 static int set_filter(struct perf_evsel *evsel, const void *arg)
1308 const char *str = arg;
1310 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1312 "--filter option should follow a -e tracepoint option\n");
1316 if (perf_evsel__append_filter(evsel, "&&", str) < 0) {
1318 "not enough memory to hold filter string\n");
1325 int parse_filter(const struct option *opt, const char *str,
1326 int unset __maybe_unused)
1328 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1330 return foreach_evsel_in_last_glob(evlist, set_filter,
1334 static int add_exclude_perf_filter(struct perf_evsel *evsel,
1335 const void *arg __maybe_unused)
1337 char new_filter[64];
1339 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1341 "--exclude-perf option should follow a -e tracepoint option\n");
1345 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1347 if (perf_evsel__append_filter(evsel, "&&", new_filter) < 0) {
1349 "not enough memory to hold filter string\n");
1356 int exclude_perf(const struct option *opt,
1357 const char *arg __maybe_unused,
1358 int unset __maybe_unused)
1360 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1362 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1366 static const char * const event_type_descriptors[] = {
1370 "Hardware cache event",
1371 "Raw hardware event descriptor",
1372 "Hardware breakpoint",
1375 static int cmp_string(const void *a, const void *b)
1377 const char * const *as = a;
1378 const char * const *bs = b;
1380 return strcmp(*as, *bs);
1384 * Print the events from <debugfs_mount_point>/tracing/events
1387 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1390 DIR *sys_dir, *evt_dir;
1391 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1392 char evt_path[MAXPATHLEN];
1393 char dir_path[MAXPATHLEN];
1394 char **evt_list = NULL;
1395 unsigned int evt_i = 0, evt_num = 0;
1396 bool evt_num_known = false;
1399 sys_dir = opendir(tracing_events_path);
1403 if (evt_num_known) {
1404 evt_list = zalloc(sizeof(char *) * evt_num);
1406 goto out_close_sys_dir;
1409 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1410 if (subsys_glob != NULL &&
1411 !strglobmatch(sys_dirent.d_name, subsys_glob))
1414 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1416 evt_dir = opendir(dir_path);
1420 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1421 if (event_glob != NULL &&
1422 !strglobmatch(evt_dirent.d_name, event_glob))
1425 if (!evt_num_known) {
1430 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1431 sys_dirent.d_name, evt_dirent.d_name);
1433 evt_list[evt_i] = strdup(evt_path);
1434 if (evt_list[evt_i] == NULL)
1435 goto out_close_evt_dir;
1442 if (!evt_num_known) {
1443 evt_num_known = true;
1446 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1448 while (evt_i < evt_num) {
1450 printf("%s ", evt_list[evt_i++]);
1453 printf(" %-50s [%s]\n", evt_list[evt_i++],
1454 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1461 for (evt_i = 0; evt_i < evt_num; evt_i++)
1462 zfree(&evt_list[evt_i]);
1471 printf("FATAL: not enough memory to print %s\n",
1472 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1478 * Check whether event is in <debugfs_mount_point>/tracing/events
1481 int is_valid_tracepoint(const char *event_string)
1483 DIR *sys_dir, *evt_dir;
1484 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1485 char evt_path[MAXPATHLEN];
1486 char dir_path[MAXPATHLEN];
1488 sys_dir = opendir(tracing_events_path);
1492 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1494 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1496 evt_dir = opendir(dir_path);
1500 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1501 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1502 sys_dirent.d_name, evt_dirent.d_name);
1503 if (!strcmp(evt_path, event_string)) {
1515 static bool is_event_supported(u8 type, unsigned config)
1519 struct perf_evsel *evsel;
1520 struct perf_event_attr attr = {
1526 struct thread_map map;
1533 evsel = perf_evsel__new(&attr);
1535 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1536 ret = open_return >= 0;
1538 if (open_return == -EACCES) {
1540 * This happens if the paranoid value
1541 * /proc/sys/kernel/perf_event_paranoid is set to 2
1542 * Re-run with exclude_kernel set; we don't do that
1543 * by default as some ARM machines do not support it.
1546 evsel->attr.exclude_kernel = 1;
1547 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1549 perf_evsel__delete(evsel);
1555 int print_hwcache_events(const char *event_glob, bool name_only)
1557 unsigned int type, op, i, evt_i = 0, evt_num = 0;
1559 char **evt_list = NULL;
1560 bool evt_num_known = false;
1563 if (evt_num_known) {
1564 evt_list = zalloc(sizeof(char *) * evt_num);
1569 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1570 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1571 /* skip invalid cache type */
1572 if (!perf_evsel__is_cache_op_valid(type, op))
1575 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1576 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
1577 name, sizeof(name));
1578 if (event_glob != NULL && !strglobmatch(name, event_glob))
1581 if (!is_event_supported(PERF_TYPE_HW_CACHE,
1582 type | (op << 8) | (i << 16)))
1585 if (!evt_num_known) {
1590 evt_list[evt_i] = strdup(name);
1591 if (evt_list[evt_i] == NULL)
1598 if (!evt_num_known) {
1599 evt_num_known = true;
1602 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1604 while (evt_i < evt_num) {
1606 printf("%s ", evt_list[evt_i++]);
1609 printf(" %-50s [%s]\n", evt_list[evt_i++],
1610 event_type_descriptors[PERF_TYPE_HW_CACHE]);
1617 for (evt_i = 0; evt_i < evt_num; evt_i++)
1618 zfree(&evt_list[evt_i]);
1623 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
1629 void print_symbol_events(const char *event_glob, unsigned type,
1630 struct event_symbol *syms, unsigned max,
1633 unsigned int i, evt_i = 0, evt_num = 0;
1634 char name[MAX_NAME_LEN];
1635 char **evt_list = NULL;
1636 bool evt_num_known = false;
1639 if (evt_num_known) {
1640 evt_list = zalloc(sizeof(char *) * evt_num);
1646 for (i = 0; i < max; i++, syms++) {
1648 if (event_glob != NULL &&
1649 !(strglobmatch(syms->symbol, event_glob) ||
1650 (syms->alias && strglobmatch(syms->alias, event_glob))))
1653 if (!is_event_supported(type, i))
1656 if (!evt_num_known) {
1661 if (!name_only && strlen(syms->alias))
1662 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1664 strncpy(name, syms->symbol, MAX_NAME_LEN);
1666 evt_list[evt_i] = strdup(name);
1667 if (evt_list[evt_i] == NULL)
1672 if (!evt_num_known) {
1673 evt_num_known = true;
1676 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1678 while (evt_i < evt_num) {
1680 printf("%s ", evt_list[evt_i++]);
1683 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
1690 for (evt_i = 0; evt_i < evt_num; evt_i++)
1691 zfree(&evt_list[evt_i]);
1696 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
1702 * Print the help text for the event symbols:
1704 void print_events(const char *event_glob, bool name_only)
1706 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
1707 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
1709 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
1710 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
1712 print_hwcache_events(event_glob, name_only);
1714 print_pmu_events(event_glob, name_only);
1716 if (event_glob != NULL)
1720 printf(" %-50s [%s]\n",
1722 event_type_descriptors[PERF_TYPE_RAW]);
1723 printf(" %-50s [%s]\n",
1724 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1725 event_type_descriptors[PERF_TYPE_RAW]);
1726 printf(" (see 'man perf-list' on how to encode it)\n");
1729 printf(" %-50s [%s]\n",
1730 "mem:<addr>[/len][:access]",
1731 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1735 print_tracepoint_events(NULL, NULL, name_only);
1738 int parse_events__is_hardcoded_term(struct parse_events_term *term)
1740 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1743 static int new_term(struct parse_events_term **_term, int type_val,
1744 int type_term, char *config,
1745 char *str, u64 num, int err_term, int err_val)
1747 struct parse_events_term *term;
1749 term = zalloc(sizeof(*term));
1753 INIT_LIST_HEAD(&term->list);
1754 term->type_val = type_val;
1755 term->type_term = type_term;
1756 term->config = config;
1757 term->err_term = err_term;
1758 term->err_val = err_val;
1761 case PARSE_EVENTS__TERM_TYPE_NUM:
1762 term->val.num = num;
1764 case PARSE_EVENTS__TERM_TYPE_STR:
1765 term->val.str = str;
1776 int parse_events_term__num(struct parse_events_term **term,
1777 int type_term, char *config, u64 num,
1778 void *loc_term_, void *loc_val_)
1780 YYLTYPE *loc_term = loc_term_;
1781 YYLTYPE *loc_val = loc_val_;
1783 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1785 loc_term ? loc_term->first_column : 0,
1786 loc_val ? loc_val->first_column : 0);
1789 int parse_events_term__str(struct parse_events_term **term,
1790 int type_term, char *config, char *str,
1791 void *loc_term_, void *loc_val_)
1793 YYLTYPE *loc_term = loc_term_;
1794 YYLTYPE *loc_val = loc_val_;
1796 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1798 loc_term ? loc_term->first_column : 0,
1799 loc_val ? loc_val->first_column : 0);
1802 int parse_events_term__sym_hw(struct parse_events_term **term,
1803 char *config, unsigned idx)
1805 struct event_symbol *sym;
1807 BUG_ON(idx >= PERF_COUNT_HW_MAX);
1808 sym = &event_symbols_hw[idx];
1811 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1812 PARSE_EVENTS__TERM_TYPE_USER, config,
1813 (char *) sym->symbol, 0, 0, 0);
1815 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1816 PARSE_EVENTS__TERM_TYPE_USER,
1817 (char *) "event", (char *) sym->symbol,
1821 int parse_events_term__clone(struct parse_events_term **new,
1822 struct parse_events_term *term)
1824 return new_term(new, term->type_val, term->type_term, term->config,
1825 term->val.str, term->val.num,
1826 term->err_term, term->err_val);
1829 void parse_events__free_terms(struct list_head *terms)
1831 struct parse_events_term *term, *h;
1833 list_for_each_entry_safe(term, h, terms, list)
1837 void parse_events_evlist_error(struct parse_events_evlist *data,
1838 int idx, const char *str)
1840 struct parse_events_error *err = data->error;
1845 err->str = strdup(str);
1846 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");