1 #include <linux/hw_breakpoint.h>
6 #include "parse-options.h"
7 #include "parse-events.h"
14 #include <api/fs/debugfs.h>
15 #include "parse-events-bison.h"
16 #define YY_EXTRA_TYPE int
17 #include "parse-events-flex.h"
19 #include "thread_map.h"
21 #define MAX_NAME_LEN 100
29 extern int parse_events_debug;
31 int parse_events_parse(void *data, void *scanner);
33 static struct perf_pmu_event_symbol *perf_pmu_events_list;
35 * The variable indicates the number of supported pmu event symbols.
36 * 0 means not initialized and ready to init
37 * -1 means failed to init, don't try anymore
38 * >0 is the number of supported pmu event symbols
40 static int perf_pmu_events_list_num;
42 static struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
43 [PERF_COUNT_HW_CPU_CYCLES] = {
44 .symbol = "cpu-cycles",
47 [PERF_COUNT_HW_INSTRUCTIONS] = {
48 .symbol = "instructions",
51 [PERF_COUNT_HW_CACHE_REFERENCES] = {
52 .symbol = "cache-references",
55 [PERF_COUNT_HW_CACHE_MISSES] = {
56 .symbol = "cache-misses",
59 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
60 .symbol = "branch-instructions",
63 [PERF_COUNT_HW_BRANCH_MISSES] = {
64 .symbol = "branch-misses",
67 [PERF_COUNT_HW_BUS_CYCLES] = {
68 .symbol = "bus-cycles",
71 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
72 .symbol = "stalled-cycles-frontend",
73 .alias = "idle-cycles-frontend",
75 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
76 .symbol = "stalled-cycles-backend",
77 .alias = "idle-cycles-backend",
79 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
80 .symbol = "ref-cycles",
85 static struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
86 [PERF_COUNT_SW_CPU_CLOCK] = {
87 .symbol = "cpu-clock",
90 [PERF_COUNT_SW_TASK_CLOCK] = {
91 .symbol = "task-clock",
94 [PERF_COUNT_SW_PAGE_FAULTS] = {
95 .symbol = "page-faults",
98 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
99 .symbol = "context-switches",
102 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
103 .symbol = "cpu-migrations",
104 .alias = "migrations",
106 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
107 .symbol = "minor-faults",
110 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
111 .symbol = "major-faults",
114 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
115 .symbol = "alignment-faults",
118 [PERF_COUNT_SW_EMULATION_FAULTS] = {
119 .symbol = "emulation-faults",
122 [PERF_COUNT_SW_DUMMY] = {
128 #define __PERF_EVENT_FIELD(config, name) \
129 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
131 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
132 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
133 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
134 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
136 #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
137 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
138 if (sys_dirent.d_type == DT_DIR && \
139 (strcmp(sys_dirent.d_name, ".")) && \
140 (strcmp(sys_dirent.d_name, "..")))
142 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
144 char evt_path[MAXPATHLEN];
147 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
148 sys_dir->d_name, evt_dir->d_name);
149 fd = open(evt_path, O_RDONLY);
157 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
158 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
159 if (evt_dirent.d_type == DT_DIR && \
160 (strcmp(evt_dirent.d_name, ".")) && \
161 (strcmp(evt_dirent.d_name, "..")) && \
162 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
164 #define MAX_EVENT_LENGTH 512
167 struct tracepoint_path *tracepoint_id_to_path(u64 config)
169 struct tracepoint_path *path = NULL;
170 DIR *sys_dir, *evt_dir;
171 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
175 char evt_path[MAXPATHLEN];
176 char dir_path[MAXPATHLEN];
178 if (debugfs_valid_mountpoint(tracing_events_path))
181 sys_dir = opendir(tracing_events_path);
185 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
187 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
189 evt_dir = opendir(dir_path);
193 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
195 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
197 fd = open(evt_path, O_RDONLY);
200 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
209 path = zalloc(sizeof(*path));
210 path->system = malloc(MAX_EVENT_LENGTH);
215 path->name = malloc(MAX_EVENT_LENGTH);
217 zfree(&path->system);
221 strncpy(path->system, sys_dirent.d_name,
223 strncpy(path->name, evt_dirent.d_name,
235 struct tracepoint_path *tracepoint_name_to_path(const char *name)
237 struct tracepoint_path *path = zalloc(sizeof(*path));
238 char *str = strchr(name, ':');
240 if (path == NULL || str == NULL) {
245 path->system = strndup(name, str - name);
246 path->name = strdup(str+1);
248 if (path->system == NULL || path->name == NULL) {
249 zfree(&path->system);
258 const char *event_type(int type)
261 case PERF_TYPE_HARDWARE:
264 case PERF_TYPE_SOFTWARE:
267 case PERF_TYPE_TRACEPOINT:
270 case PERF_TYPE_HW_CACHE:
271 return "hardware-cache";
282 static struct perf_evsel *
283 __add_event(struct list_head *list, int *idx,
284 struct perf_event_attr *attr,
285 char *name, struct cpu_map *cpus)
287 struct perf_evsel *evsel;
289 event_attr_init(attr);
291 evsel = perf_evsel__new_idx(attr, (*idx)++);
297 evsel->name = strdup(name);
298 list_add_tail(&evsel->node, list);
302 static int add_event(struct list_head *list, int *idx,
303 struct perf_event_attr *attr, char *name)
305 return __add_event(list, idx, attr, name, NULL) ? 0 : -ENOMEM;
308 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
313 for (i = 0; i < size; i++) {
314 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
315 n = strlen(names[i][j]);
316 if (n > longest && !strncasecmp(str, names[i][j], n))
326 int parse_events_add_cache(struct list_head *list, int *idx,
327 char *type, char *op_result1, char *op_result2)
329 struct perf_event_attr attr;
330 char name[MAX_NAME_LEN];
331 int cache_type = -1, cache_op = -1, cache_result = -1;
332 char *op_result[2] = { op_result1, op_result2 };
336 * No fallback - if we cannot get a clear cache type
339 cache_type = parse_aliases(type, perf_evsel__hw_cache,
340 PERF_COUNT_HW_CACHE_MAX);
341 if (cache_type == -1)
344 n = snprintf(name, MAX_NAME_LEN, "%s", type);
346 for (i = 0; (i < 2) && (op_result[i]); i++) {
347 char *str = op_result[i];
349 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
351 if (cache_op == -1) {
352 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
353 PERF_COUNT_HW_CACHE_OP_MAX);
355 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
361 if (cache_result == -1) {
362 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
363 PERF_COUNT_HW_CACHE_RESULT_MAX);
364 if (cache_result >= 0)
370 * Fall back to reads:
373 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
376 * Fall back to accesses:
378 if (cache_result == -1)
379 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
381 memset(&attr, 0, sizeof(attr));
382 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
383 attr.type = PERF_TYPE_HW_CACHE;
384 return add_event(list, idx, &attr, name);
387 static int add_tracepoint(struct list_head *list, int *idx,
388 char *sys_name, char *evt_name)
390 struct perf_evsel *evsel;
392 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
396 list_add_tail(&evsel->node, list);
401 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
402 char *sys_name, char *evt_name)
404 char evt_path[MAXPATHLEN];
405 struct dirent *evt_ent;
409 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
410 evt_dir = opendir(evt_path);
412 perror("Can't open event dir");
416 while (!ret && (evt_ent = readdir(evt_dir))) {
417 if (!strcmp(evt_ent->d_name, ".")
418 || !strcmp(evt_ent->d_name, "..")
419 || !strcmp(evt_ent->d_name, "enable")
420 || !strcmp(evt_ent->d_name, "filter"))
423 if (!strglobmatch(evt_ent->d_name, evt_name))
426 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
433 static int add_tracepoint_event(struct list_head *list, int *idx,
434 char *sys_name, char *evt_name)
436 return strpbrk(evt_name, "*?") ?
437 add_tracepoint_multi_event(list, idx, sys_name, evt_name) :
438 add_tracepoint(list, idx, sys_name, evt_name);
441 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
442 char *sys_name, char *evt_name)
444 struct dirent *events_ent;
448 events_dir = opendir(tracing_events_path);
450 perror("Can't open event dir");
454 while (!ret && (events_ent = readdir(events_dir))) {
455 if (!strcmp(events_ent->d_name, ".")
456 || !strcmp(events_ent->d_name, "..")
457 || !strcmp(events_ent->d_name, "enable")
458 || !strcmp(events_ent->d_name, "header_event")
459 || !strcmp(events_ent->d_name, "header_page"))
462 if (!strglobmatch(events_ent->d_name, sys_name))
465 ret = add_tracepoint_event(list, idx, events_ent->d_name,
469 closedir(events_dir);
473 int parse_events_add_tracepoint(struct list_head *list, int *idx,
474 char *sys, char *event)
478 ret = debugfs_valid_mountpoint(tracing_events_path);
482 if (strpbrk(sys, "*?"))
483 return add_tracepoint_multi_sys(list, idx, sys, event);
485 return add_tracepoint_event(list, idx, sys, event);
489 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
493 for (i = 0; i < 3; i++) {
494 if (!type || !type[i])
497 #define CHECK_SET_TYPE(bit) \
499 if (attr->bp_type & bit) \
502 attr->bp_type |= bit; \
507 CHECK_SET_TYPE(HW_BREAKPOINT_R);
510 CHECK_SET_TYPE(HW_BREAKPOINT_W);
513 CHECK_SET_TYPE(HW_BREAKPOINT_X);
520 #undef CHECK_SET_TYPE
522 if (!attr->bp_type) /* Default */
523 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
528 int parse_events_add_breakpoint(struct list_head *list, int *idx,
529 void *ptr, char *type)
531 struct perf_event_attr attr;
533 memset(&attr, 0, sizeof(attr));
534 attr.bp_addr = (unsigned long) ptr;
536 if (parse_breakpoint_type(type, &attr))
540 * We should find a nice way to override the access length
541 * Provide some defaults for now
543 if (attr.bp_type == HW_BREAKPOINT_X)
544 attr.bp_len = sizeof(long);
546 attr.bp_len = HW_BREAKPOINT_LEN_4;
548 attr.type = PERF_TYPE_BREAKPOINT;
549 attr.sample_period = 1;
551 return add_event(list, idx, &attr, NULL);
554 static int config_term(struct perf_event_attr *attr,
555 struct parse_events_term *term)
557 #define CHECK_TYPE_VAL(type) \
559 if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
563 switch (term->type_term) {
564 case PARSE_EVENTS__TERM_TYPE_CONFIG:
566 attr->config = term->val.num;
568 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
570 attr->config1 = term->val.num;
572 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
574 attr->config2 = term->val.num;
576 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
578 attr->sample_period = term->val.num;
580 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
582 * TODO uncomment when the field is available
583 * attr->branch_sample_type = term->val.num;
586 case PARSE_EVENTS__TERM_TYPE_NAME:
594 #undef CHECK_TYPE_VAL
597 static int config_attr(struct perf_event_attr *attr,
598 struct list_head *head, int fail)
600 struct parse_events_term *term;
602 list_for_each_entry(term, head, list)
603 if (config_term(attr, term) && fail)
609 int parse_events_add_numeric(struct list_head *list, int *idx,
610 u32 type, u64 config,
611 struct list_head *head_config)
613 struct perf_event_attr attr;
615 memset(&attr, 0, sizeof(attr));
617 attr.config = config;
620 config_attr(&attr, head_config, 1))
623 return add_event(list, idx, &attr, NULL);
626 static int parse_events__is_name_term(struct parse_events_term *term)
628 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
631 static char *pmu_event_name(struct list_head *head_terms)
633 struct parse_events_term *term;
635 list_for_each_entry(term, head_terms, list)
636 if (parse_events__is_name_term(term))
637 return term->val.str;
642 int parse_events_add_pmu(struct list_head *list, int *idx,
643 char *name, struct list_head *head_config)
645 struct perf_event_attr attr;
646 struct perf_pmu_info info;
647 struct perf_pmu *pmu;
648 struct perf_evsel *evsel;
650 pmu = perf_pmu__find(name);
654 if (pmu->default_config) {
655 memcpy(&attr, pmu->default_config,
656 sizeof(struct perf_event_attr));
658 memset(&attr, 0, sizeof(attr));
662 attr.type = pmu->type;
663 evsel = __add_event(list, idx, &attr, NULL, pmu->cpus);
664 return evsel ? 0 : -ENOMEM;
667 if (perf_pmu__check_alias(pmu, head_config, &info))
671 * Configure hardcoded terms first, no need to check
672 * return value when called with fail == 0 ;)
674 config_attr(&attr, head_config, 0);
676 if (perf_pmu__config(pmu, &attr, head_config))
679 evsel = __add_event(list, idx, &attr, pmu_event_name(head_config),
682 evsel->unit = info.unit;
683 evsel->scale = info.scale;
684 evsel->per_pkg = info.per_pkg;
685 evsel->snapshot = info.snapshot;
688 return evsel ? 0 : -ENOMEM;
691 int parse_events__modifier_group(struct list_head *list,
694 return parse_events__modifier_event(list, event_mod, true);
697 void parse_events__set_leader(char *name, struct list_head *list)
699 struct perf_evsel *leader;
701 __perf_evlist__set_leader(list);
702 leader = list_entry(list->next, struct perf_evsel, node);
703 leader->group_name = name ? strdup(name) : NULL;
706 /* list_event is assumed to point to malloc'ed memory */
707 void parse_events_update_lists(struct list_head *list_event,
708 struct list_head *list_all)
711 * Called for single event definition. Update the
712 * 'all event' list, and reinit the 'single event'
713 * list, for next event definition.
715 list_splice_tail(list_event, list_all);
719 struct event_modifier {
731 static int get_event_modifier(struct event_modifier *mod, char *str,
732 struct perf_evsel *evsel)
734 int eu = evsel ? evsel->attr.exclude_user : 0;
735 int ek = evsel ? evsel->attr.exclude_kernel : 0;
736 int eh = evsel ? evsel->attr.exclude_hv : 0;
737 int eH = evsel ? evsel->attr.exclude_host : 0;
738 int eG = evsel ? evsel->attr.exclude_guest : 0;
739 int precise = evsel ? evsel->attr.precise_ip : 0;
741 int pinned = evsel ? evsel->attr.pinned : 0;
743 int exclude = eu | ek | eh;
744 int exclude_GH = evsel ? evsel->exclude_GH : 0;
746 memset(mod, 0, sizeof(*mod));
751 exclude = eu = ek = eh = 1;
753 } else if (*str == 'k') {
755 exclude = eu = ek = eh = 1;
757 } else if (*str == 'h') {
759 exclude = eu = ek = eh = 1;
761 } else if (*str == 'G') {
763 exclude_GH = eG = eH = 1;
765 } else if (*str == 'H') {
767 exclude_GH = eG = eH = 1;
769 } else if (*str == 'p') {
771 /* use of precise requires exclude_guest */
774 } else if (*str == 'S') {
776 } else if (*str == 'D') {
787 * 0 - SAMPLE_IP can have arbitrary skid
788 * 1 - SAMPLE_IP must have constant skid
789 * 2 - SAMPLE_IP requested to have 0 skid
790 * 3 - SAMPLE_IP must have 0 skid
792 * See also PERF_RECORD_MISC_EXACT_IP
802 mod->precise = precise;
803 mod->exclude_GH = exclude_GH;
804 mod->sample_read = sample_read;
805 mod->pinned = pinned;
811 * Basic modifier sanity check to validate it contains only one
812 * instance of any modifier (apart from 'p') present.
814 static int check_modifier(char *str)
818 /* The sizeof includes 0 byte as well. */
819 if (strlen(str) > (sizeof("ukhGHpppSD") - 1))
823 if (*p != 'p' && strchr(p + 1, *p))
831 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
833 struct perf_evsel *evsel;
834 struct event_modifier mod;
839 if (check_modifier(str))
842 if (!add && get_event_modifier(&mod, str, NULL))
845 __evlist__for_each(list, evsel) {
846 if (add && get_event_modifier(&mod, str, evsel))
849 evsel->attr.exclude_user = mod.eu;
850 evsel->attr.exclude_kernel = mod.ek;
851 evsel->attr.exclude_hv = mod.eh;
852 evsel->attr.precise_ip = mod.precise;
853 evsel->attr.exclude_host = mod.eH;
854 evsel->attr.exclude_guest = mod.eG;
855 evsel->exclude_GH = mod.exclude_GH;
856 evsel->sample_read = mod.sample_read;
858 if (perf_evsel__is_group_leader(evsel))
859 evsel->attr.pinned = mod.pinned;
865 int parse_events_name(struct list_head *list, char *name)
867 struct perf_evsel *evsel;
869 __evlist__for_each(list, evsel) {
871 evsel->name = strdup(name);
878 comp_pmu(const void *p1, const void *p2)
880 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
881 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
883 return strcmp(pmu1->symbol, pmu2->symbol);
886 static void perf_pmu__parse_cleanup(void)
888 if (perf_pmu_events_list_num > 0) {
889 struct perf_pmu_event_symbol *p;
892 for (i = 0; i < perf_pmu_events_list_num; i++) {
893 p = perf_pmu_events_list + i;
896 free(perf_pmu_events_list);
897 perf_pmu_events_list = NULL;
898 perf_pmu_events_list_num = 0;
902 #define SET_SYMBOL(str, stype) \
911 * Read the pmu events list from sysfs
912 * Save it into perf_pmu_events_list
914 static void perf_pmu__parse_init(void)
917 struct perf_pmu *pmu = NULL;
918 struct perf_pmu_alias *alias;
921 pmu = perf_pmu__find("cpu");
922 if ((pmu == NULL) || list_empty(&pmu->aliases)) {
923 perf_pmu_events_list_num = -1;
926 list_for_each_entry(alias, &pmu->aliases, list) {
927 if (strchr(alias->name, '-'))
931 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
932 if (!perf_pmu_events_list)
934 perf_pmu_events_list_num = len;
937 list_for_each_entry(alias, &pmu->aliases, list) {
938 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
939 char *tmp = strchr(alias->name, '-');
942 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
943 PMU_EVENT_SYMBOL_PREFIX);
945 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
948 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
952 qsort(perf_pmu_events_list, len,
953 sizeof(struct perf_pmu_event_symbol), comp_pmu);
957 perf_pmu__parse_cleanup();
960 enum perf_pmu_event_symbol_type
961 perf_pmu__parse_check(const char *name)
963 struct perf_pmu_event_symbol p, *r;
965 /* scan kernel pmu events from sysfs if needed */
966 if (perf_pmu_events_list_num == 0)
967 perf_pmu__parse_init();
969 * name "cpu" could be prefix of cpu-cycles or cpu// events.
970 * cpu-cycles has been handled by hardcode.
971 * So it must be cpu// events, not kernel pmu event.
973 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
974 return PMU_EVENT_SYMBOL_ERR;
976 p.symbol = strdup(name);
977 r = bsearch(&p, perf_pmu_events_list,
978 (size_t) perf_pmu_events_list_num,
979 sizeof(struct perf_pmu_event_symbol), comp_pmu);
981 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
984 static int parse_events__scanner(const char *str, void *data, int start_token)
986 YY_BUFFER_STATE buffer;
990 ret = parse_events_lex_init_extra(start_token, &scanner);
994 buffer = parse_events__scan_string(str, scanner);
997 parse_events_debug = 1;
999 ret = parse_events_parse(data, scanner);
1001 parse_events__flush_buffer(buffer, scanner);
1002 parse_events__delete_buffer(buffer, scanner);
1003 parse_events_lex_destroy(scanner);
1008 * parse event config string, return a list of event terms.
1010 int parse_events_terms(struct list_head *terms, const char *str)
1012 struct parse_events_terms data = {
1017 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1019 list_splice(data.terms, terms);
1025 parse_events__free_terms(data.terms);
1029 int parse_events(struct perf_evlist *evlist, const char *str)
1031 struct parse_events_evlist data = {
1032 .list = LIST_HEAD_INIT(data.list),
1033 .idx = evlist->nr_entries,
1037 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1038 perf_pmu__parse_cleanup();
1040 int entries = data.idx - evlist->nr_entries;
1041 perf_evlist__splice_list_tail(evlist, &data.list, entries);
1042 evlist->nr_groups += data.nr_groups;
1047 * There are 2 users - builtin-record and builtin-test objects.
1048 * Both call perf_evlist__delete in case of error, so we dont
1054 int parse_events_option(const struct option *opt, const char *str,
1055 int unset __maybe_unused)
1057 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1058 int ret = parse_events(evlist, str);
1061 fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
1062 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1067 int parse_filter(const struct option *opt, const char *str,
1068 int unset __maybe_unused)
1070 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1071 struct perf_evsel *last = NULL;
1073 if (evlist->nr_entries > 0)
1074 last = perf_evlist__last(evlist);
1076 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
1078 "--filter option should follow a -e tracepoint option\n");
1082 last->filter = strdup(str);
1083 if (last->filter == NULL) {
1084 fprintf(stderr, "not enough memory to hold filter string\n");
1091 static const char * const event_type_descriptors[] = {
1095 "Hardware cache event",
1096 "Raw hardware event descriptor",
1097 "Hardware breakpoint",
1101 * Print the events from <debugfs_mount_point>/tracing/events
1104 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1107 DIR *sys_dir, *evt_dir;
1108 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1109 char evt_path[MAXPATHLEN];
1110 char dir_path[MAXPATHLEN];
1111 char sbuf[STRERR_BUFSIZE];
1113 if (debugfs_valid_mountpoint(tracing_events_path)) {
1114 printf(" [ Tracepoints not available: %s ]\n",
1115 strerror_r(errno, sbuf, sizeof(sbuf)));
1119 sys_dir = opendir(tracing_events_path);
1123 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1124 if (subsys_glob != NULL &&
1125 !strglobmatch(sys_dirent.d_name, subsys_glob))
1128 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1130 evt_dir = opendir(dir_path);
1134 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1135 if (event_glob != NULL &&
1136 !strglobmatch(evt_dirent.d_name, event_glob))
1140 printf("%s:%s ", sys_dirent.d_name, evt_dirent.d_name);
1144 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1145 sys_dirent.d_name, evt_dirent.d_name);
1146 printf(" %-50s [%s]\n", evt_path,
1147 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1155 * Check whether event is in <debugfs_mount_point>/tracing/events
1158 int is_valid_tracepoint(const char *event_string)
1160 DIR *sys_dir, *evt_dir;
1161 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1162 char evt_path[MAXPATHLEN];
1163 char dir_path[MAXPATHLEN];
1165 if (debugfs_valid_mountpoint(tracing_events_path))
1168 sys_dir = opendir(tracing_events_path);
1172 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1174 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1176 evt_dir = opendir(dir_path);
1180 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1181 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1182 sys_dirent.d_name, evt_dirent.d_name);
1183 if (!strcmp(evt_path, event_string)) {
1195 static bool is_event_supported(u8 type, unsigned config)
1199 struct perf_evsel *evsel;
1200 struct perf_event_attr attr = {
1206 struct thread_map map;
1213 evsel = perf_evsel__new(&attr);
1215 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1216 ret = open_return >= 0;
1218 if (open_return == -EACCES) {
1220 * This happens if the paranoid value
1221 * /proc/sys/kernel/perf_event_paranoid is set to 2
1222 * Re-run with exclude_kernel set; we don't do that
1223 * by default as some ARM machines do not support it.
1226 evsel->attr.exclude_kernel = 1;
1227 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1229 perf_evsel__delete(evsel);
1235 static void __print_events_type(u8 type, struct event_symbol *syms,
1241 for (i = 0; i < max ; i++, syms++) {
1242 if (!is_event_supported(type, i))
1245 if (strlen(syms->alias))
1246 snprintf(name, sizeof(name), "%s OR %s",
1247 syms->symbol, syms->alias);
1249 snprintf(name, sizeof(name), "%s", syms->symbol);
1251 printf(" %-50s [%s]\n", name, event_type_descriptors[type]);
1255 void print_events_type(u8 type)
1257 if (type == PERF_TYPE_SOFTWARE)
1258 __print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX);
1260 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
1263 int print_hwcache_events(const char *event_glob, bool name_only)
1265 unsigned int type, op, i, printed = 0;
1268 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1269 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1270 /* skip invalid cache type */
1271 if (!perf_evsel__is_cache_op_valid(type, op))
1274 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1275 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
1276 name, sizeof(name));
1277 if (event_glob != NULL && !strglobmatch(name, event_glob))
1280 if (!is_event_supported(PERF_TYPE_HW_CACHE,
1281 type | (op << 8) | (i << 16)))
1285 printf("%s ", name);
1287 printf(" %-50s [%s]\n", name,
1288 event_type_descriptors[PERF_TYPE_HW_CACHE]);
1299 static void print_symbol_events(const char *event_glob, unsigned type,
1300 struct event_symbol *syms, unsigned max,
1303 unsigned i, printed = 0;
1304 char name[MAX_NAME_LEN];
1306 for (i = 0; i < max; i++, syms++) {
1308 if (event_glob != NULL &&
1309 !(strglobmatch(syms->symbol, event_glob) ||
1310 (syms->alias && strglobmatch(syms->alias, event_glob))))
1313 if (!is_event_supported(type, i))
1317 printf("%s ", syms->symbol);
1321 if (strlen(syms->alias))
1322 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1324 strncpy(name, syms->symbol, MAX_NAME_LEN);
1326 printf(" %-50s [%s]\n", name, event_type_descriptors[type]);
1336 * Print the help text for the event symbols:
1338 void print_events(const char *event_glob, bool name_only)
1342 printf("List of pre-defined events (to be used in -e):\n");
1345 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
1346 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
1348 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
1349 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
1351 print_hwcache_events(event_glob, name_only);
1353 print_pmu_events(event_glob, name_only);
1355 if (event_glob != NULL)
1359 printf(" %-50s [%s]\n",
1361 event_type_descriptors[PERF_TYPE_RAW]);
1362 printf(" %-50s [%s]\n",
1363 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1364 event_type_descriptors[PERF_TYPE_RAW]);
1365 printf(" (see 'man perf-list' on how to encode it)\n");
1368 printf(" %-50s [%s]\n",
1369 "mem:<addr>[:access]",
1370 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1374 print_tracepoint_events(NULL, NULL, name_only);
1377 int parse_events__is_hardcoded_term(struct parse_events_term *term)
1379 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1382 static int new_term(struct parse_events_term **_term, int type_val,
1383 int type_term, char *config,
1386 struct parse_events_term *term;
1388 term = zalloc(sizeof(*term));
1392 INIT_LIST_HEAD(&term->list);
1393 term->type_val = type_val;
1394 term->type_term = type_term;
1395 term->config = config;
1398 case PARSE_EVENTS__TERM_TYPE_NUM:
1399 term->val.num = num;
1401 case PARSE_EVENTS__TERM_TYPE_STR:
1402 term->val.str = str;
1413 int parse_events_term__num(struct parse_events_term **term,
1414 int type_term, char *config, u64 num)
1416 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1420 int parse_events_term__str(struct parse_events_term **term,
1421 int type_term, char *config, char *str)
1423 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1427 int parse_events_term__sym_hw(struct parse_events_term **term,
1428 char *config, unsigned idx)
1430 struct event_symbol *sym;
1432 BUG_ON(idx >= PERF_COUNT_HW_MAX);
1433 sym = &event_symbols_hw[idx];
1436 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1437 PARSE_EVENTS__TERM_TYPE_USER, config,
1438 (char *) sym->symbol, 0);
1440 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1441 PARSE_EVENTS__TERM_TYPE_USER,
1442 (char *) "event", (char *) sym->symbol, 0);
1445 int parse_events_term__clone(struct parse_events_term **new,
1446 struct parse_events_term *term)
1448 return new_term(new, term->type_val, term->type_term, term->config,
1449 term->val.str, term->val.num);
1452 void parse_events__free_terms(struct list_head *terms)
1454 struct parse_events_term *term, *h;
1456 list_for_each_entry_safe(term, h, terms, list)