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));
216 path->system = malloc(MAX_EVENT_LENGTH);
221 path->name = malloc(MAX_EVENT_LENGTH);
223 zfree(&path->system);
227 strncpy(path->system, sys_dirent->d_name,
229 strncpy(path->name, evt_dirent->d_name,
241 struct tracepoint_path *tracepoint_name_to_path(const char *name)
243 struct tracepoint_path *path = zalloc(sizeof(*path));
244 char *str = strchr(name, ':');
246 if (path == NULL || str == NULL) {
251 path->system = strndup(name, str - name);
252 path->name = strdup(str+1);
254 if (path->system == NULL || path->name == NULL) {
255 zfree(&path->system);
263 const char *event_type(int type)
266 case PERF_TYPE_HARDWARE:
269 case PERF_TYPE_SOFTWARE:
272 case PERF_TYPE_TRACEPOINT:
275 case PERF_TYPE_HW_CACHE:
276 return "hardware-cache";
285 static int parse_events__is_name_term(struct parse_events_term *term)
287 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
290 static char *get_config_name(struct list_head *head_terms)
292 struct parse_events_term *term;
297 list_for_each_entry(term, head_terms, list)
298 if (parse_events__is_name_term(term))
299 return term->val.str;
304 static struct perf_evsel *
305 __add_event(struct list_head *list, int *idx,
306 struct perf_event_attr *attr,
307 char *name, struct cpu_map *cpus,
308 struct list_head *config_terms)
310 struct perf_evsel *evsel;
312 event_attr_init(attr);
314 evsel = perf_evsel__new_idx(attr, *idx);
319 evsel->cpus = cpu_map__get(cpus);
320 evsel->own_cpus = cpu_map__get(cpus);
321 evsel->system_wide = !!cpus;
324 evsel->name = strdup(name);
327 list_splice(config_terms, &evsel->config_terms);
329 list_add_tail(&evsel->node, list);
333 static int add_event(struct list_head *list, int *idx,
334 struct perf_event_attr *attr, char *name,
335 struct list_head *config_terms)
337 return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM;
340 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
345 for (i = 0; i < size; i++) {
346 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
347 n = strlen(names[i][j]);
348 if (n > longest && !strncasecmp(str, names[i][j], n))
358 typedef int config_term_func_t(struct perf_event_attr *attr,
359 struct parse_events_term *term,
360 struct parse_events_error *err);
361 static int config_term_common(struct perf_event_attr *attr,
362 struct parse_events_term *term,
363 struct parse_events_error *err);
364 static int config_attr(struct perf_event_attr *attr,
365 struct list_head *head,
366 struct parse_events_error *err,
367 config_term_func_t config_term);
369 int parse_events_add_cache(struct list_head *list, int *idx,
370 char *type, char *op_result1, char *op_result2,
371 struct parse_events_error *err,
372 struct list_head *head_config)
374 struct perf_event_attr attr;
375 LIST_HEAD(config_terms);
376 char name[MAX_NAME_LEN], *config_name;
377 int cache_type = -1, cache_op = -1, cache_result = -1;
378 char *op_result[2] = { op_result1, op_result2 };
382 * No fallback - if we cannot get a clear cache type
385 cache_type = parse_aliases(type, perf_evsel__hw_cache,
386 PERF_COUNT_HW_CACHE_MAX);
387 if (cache_type == -1)
390 config_name = get_config_name(head_config);
391 n = snprintf(name, MAX_NAME_LEN, "%s", type);
393 for (i = 0; (i < 2) && (op_result[i]); i++) {
394 char *str = op_result[i];
396 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
398 if (cache_op == -1) {
399 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
400 PERF_COUNT_HW_CACHE_OP_MAX);
402 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
408 if (cache_result == -1) {
409 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
410 PERF_COUNT_HW_CACHE_RESULT_MAX);
411 if (cache_result >= 0)
417 * Fall back to reads:
420 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
423 * Fall back to accesses:
425 if (cache_result == -1)
426 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
428 memset(&attr, 0, sizeof(attr));
429 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
430 attr.type = PERF_TYPE_HW_CACHE;
433 if (config_attr(&attr, head_config, err,
437 if (get_config_terms(head_config, &config_terms))
440 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
443 static void tracepoint_error(struct parse_events_error *e, int err,
444 const char *sys, const char *name)
452 * We get error directly from syscall errno ( > 0),
453 * or from encoded pointer's error ( < 0).
459 e->str = strdup("can't access trace events");
462 e->str = strdup("unknown tracepoint");
465 e->str = strdup("failed to add tracepoint");
469 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
470 e->help = strdup(help);
473 static int add_tracepoint(struct list_head *list, int *idx,
474 const char *sys_name, const char *evt_name,
475 struct parse_events_error *err,
476 struct list_head *head_config)
478 struct perf_evsel *evsel;
480 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
482 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
483 return PTR_ERR(evsel);
487 LIST_HEAD(config_terms);
489 if (get_config_terms(head_config, &config_terms))
491 list_splice(&config_terms, &evsel->config_terms);
494 list_add_tail(&evsel->node, list);
498 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
499 const char *sys_name, const char *evt_name,
500 struct parse_events_error *err,
501 struct list_head *head_config)
503 char evt_path[MAXPATHLEN];
504 struct dirent *evt_ent;
506 int ret = 0, found = 0;
508 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
509 evt_dir = opendir(evt_path);
511 tracepoint_error(err, errno, sys_name, evt_name);
515 while (!ret && (evt_ent = readdir(evt_dir))) {
516 if (!strcmp(evt_ent->d_name, ".")
517 || !strcmp(evt_ent->d_name, "..")
518 || !strcmp(evt_ent->d_name, "enable")
519 || !strcmp(evt_ent->d_name, "filter"))
522 if (!strglobmatch(evt_ent->d_name, evt_name))
527 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
532 tracepoint_error(err, ENOENT, sys_name, evt_name);
540 static int add_tracepoint_event(struct list_head *list, int *idx,
541 const char *sys_name, const char *evt_name,
542 struct parse_events_error *err,
543 struct list_head *head_config)
545 return strpbrk(evt_name, "*?") ?
546 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
548 add_tracepoint(list, idx, sys_name, evt_name,
552 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
553 const char *sys_name, const char *evt_name,
554 struct parse_events_error *err,
555 struct list_head *head_config)
557 struct dirent *events_ent;
561 events_dir = opendir(tracing_events_path);
563 tracepoint_error(err, errno, sys_name, evt_name);
567 while (!ret && (events_ent = readdir(events_dir))) {
568 if (!strcmp(events_ent->d_name, ".")
569 || !strcmp(events_ent->d_name, "..")
570 || !strcmp(events_ent->d_name, "enable")
571 || !strcmp(events_ent->d_name, "header_event")
572 || !strcmp(events_ent->d_name, "header_page"))
575 if (!strglobmatch(events_ent->d_name, sys_name))
578 ret = add_tracepoint_event(list, idx, events_ent->d_name,
579 evt_name, err, head_config);
582 closedir(events_dir);
586 struct __add_bpf_event_param {
587 struct parse_events_evlist *data;
588 struct list_head *list;
589 struct list_head *head_config;
592 static int add_bpf_event(const char *group, const char *event, int fd,
595 LIST_HEAD(new_evsels);
596 struct __add_bpf_event_param *param = _param;
597 struct parse_events_evlist *evlist = param->data;
598 struct list_head *list = param->list;
599 struct perf_evsel *pos;
602 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
605 err = parse_events_add_tracepoint(&new_evsels, &evlist->idx, group,
606 event, evlist->error,
609 struct perf_evsel *evsel, *tmp;
611 pr_debug("Failed to add BPF event %s:%s\n",
613 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
614 list_del(&evsel->node);
615 perf_evsel__delete(evsel);
619 pr_debug("adding %s:%s\n", group, event);
621 list_for_each_entry(pos, &new_evsels, node) {
622 pr_debug("adding %s:%s to %p\n",
626 list_splice(&new_evsels, list);
630 int parse_events_load_bpf_obj(struct parse_events_evlist *data,
631 struct list_head *list,
632 struct bpf_object *obj,
633 struct list_head *head_config)
637 struct __add_bpf_event_param param = {data, list, head_config};
638 static bool registered_unprobe_atexit = false;
640 if (IS_ERR(obj) || !obj) {
641 snprintf(errbuf, sizeof(errbuf),
642 "Internal error: load bpf obj with NULL");
648 * Register atexit handler before calling bpf__probe() so
649 * bpf__probe() don't need to unprobe probe points its already
650 * created when failure.
652 if (!registered_unprobe_atexit) {
654 registered_unprobe_atexit = true;
657 err = bpf__probe(obj);
659 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
663 err = bpf__load(obj);
665 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
669 err = bpf__foreach_event(obj, add_bpf_event, ¶m);
671 snprintf(errbuf, sizeof(errbuf),
672 "Attach events in BPF object failed");
678 data->error->help = strdup("(add -v to see detail)");
679 data->error->str = strdup(errbuf);
684 parse_events_config_bpf(struct parse_events_evlist *data,
685 struct bpf_object *obj,
686 struct list_head *head_config)
688 struct parse_events_term *term;
691 if (!head_config || list_empty(head_config))
694 list_for_each_entry(term, head_config, list) {
698 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
699 snprintf(errbuf, sizeof(errbuf),
700 "Invalid config term for BPF object");
701 errbuf[BUFSIZ - 1] = '\0';
703 data->error->idx = term->err_term;
704 data->error->str = strdup(errbuf);
708 err = bpf__config_obj(obj, term, data->evlist, &error_pos);
710 bpf__strerror_config_obj(obj, term, data->evlist,
711 &error_pos, err, errbuf,
713 data->error->help = strdup(
714 "Hint:\tValid config terms:\n"
715 " \tmap:[<arraymap>].value<indices>=[value]\n"
716 " \tmap:[<eventmap>].event<indices>=[event]\n"
718 " \twhere <indices> is something like [0,3...5] or [all]\n"
719 " \t(add -v to see detail)");
720 data->error->str = strdup(errbuf);
721 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
722 data->error->idx = term->err_val;
724 data->error->idx = term->err_term + error_pos;
732 * Split config terms:
733 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
734 * 'call-graph=fp' is 'evt config', should be applied to each
736 * 'map:array.value[0]=1' is 'obj config', should be processed
737 * with parse_events_config_bpf.
739 * Move object config terms from the first list to obj_head_config.
742 split_bpf_config_terms(struct list_head *evt_head_config,
743 struct list_head *obj_head_config)
745 struct parse_events_term *term, *temp;
748 * Currectly, all possible user config term
749 * belong to bpf object. parse_events__is_hardcoded_term()
750 * happends to be a good flag.
752 * See parse_events_config_bpf() and
753 * config_term_tracepoint().
755 list_for_each_entry_safe(term, temp, evt_head_config, list)
756 if (!parse_events__is_hardcoded_term(term))
757 list_move_tail(&term->list, obj_head_config);
760 int parse_events_load_bpf(struct parse_events_evlist *data,
761 struct list_head *list,
764 struct list_head *head_config)
767 struct bpf_object *obj;
768 LIST_HEAD(obj_head_config);
771 split_bpf_config_terms(head_config, &obj_head_config);
773 obj = bpf__prepare_load(bpf_file_name, source);
780 snprintf(errbuf, sizeof(errbuf),
781 "BPF support is not compiled");
783 bpf__strerror_prepare_load(bpf_file_name,
788 data->error->help = strdup("(add -v to see detail)");
789 data->error->str = strdup(errbuf);
793 err = parse_events_load_bpf_obj(data, list, obj, head_config);
796 err = parse_events_config_bpf(data, obj, &obj_head_config);
799 * Caller doesn't know anything about obj_head_config,
800 * so combine them together again before returnning.
803 list_splice_tail(&obj_head_config, head_config);
808 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
812 for (i = 0; i < 3; i++) {
813 if (!type || !type[i])
816 #define CHECK_SET_TYPE(bit) \
818 if (attr->bp_type & bit) \
821 attr->bp_type |= bit; \
826 CHECK_SET_TYPE(HW_BREAKPOINT_R);
829 CHECK_SET_TYPE(HW_BREAKPOINT_W);
832 CHECK_SET_TYPE(HW_BREAKPOINT_X);
839 #undef CHECK_SET_TYPE
841 if (!attr->bp_type) /* Default */
842 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
847 int parse_events_add_breakpoint(struct list_head *list, int *idx,
848 void *ptr, char *type, u64 len)
850 struct perf_event_attr attr;
852 memset(&attr, 0, sizeof(attr));
853 attr.bp_addr = (unsigned long) ptr;
855 if (parse_breakpoint_type(type, &attr))
858 /* Provide some defaults if len is not specified */
860 if (attr.bp_type == HW_BREAKPOINT_X)
863 len = HW_BREAKPOINT_LEN_4;
868 attr.type = PERF_TYPE_BREAKPOINT;
869 attr.sample_period = 1;
871 return add_event(list, idx, &attr, NULL, NULL);
874 static int check_type_val(struct parse_events_term *term,
875 struct parse_events_error *err,
878 if (type == term->type_val)
882 err->idx = term->err_val;
883 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
884 err->str = strdup("expected numeric value");
886 err->str = strdup("expected string value");
892 * Update according to parse-events.l
894 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
895 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
896 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
897 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
898 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
899 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
900 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
901 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
902 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
903 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
904 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
905 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
906 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
907 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
908 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
909 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
910 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
911 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
914 static bool config_term_shrinked;
917 config_term_avail(int term_type, struct parse_events_error *err)
919 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
920 err->str = strdup("Invalid term_type");
923 if (!config_term_shrinked)
927 case PARSE_EVENTS__TERM_TYPE_CONFIG:
928 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
929 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
930 case PARSE_EVENTS__TERM_TYPE_NAME:
931 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
937 /* term_type is validated so indexing is safe */
938 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
939 config_term_names[term_type]) < 0)
945 void parse_events__shrink_config_terms(void)
947 config_term_shrinked = true;
950 static int config_term_common(struct perf_event_attr *attr,
951 struct parse_events_term *term,
952 struct parse_events_error *err)
954 #define CHECK_TYPE_VAL(type) \
956 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
960 switch (term->type_term) {
961 case PARSE_EVENTS__TERM_TYPE_CONFIG:
963 attr->config = term->val.num;
965 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
967 attr->config1 = term->val.num;
969 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
971 attr->config2 = term->val.num;
973 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
976 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
979 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
981 if (strcmp(term->val.str, "no") &&
982 parse_branch_str(term->val.str, &attr->branch_sample_type)) {
983 err->str = strdup("invalid branch sample type");
984 err->idx = term->err_val;
988 case PARSE_EVENTS__TERM_TYPE_TIME:
990 if (term->val.num > 1) {
991 err->str = strdup("expected 0 or 1");
992 err->idx = term->err_val;
996 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
999 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1000 CHECK_TYPE_VAL(NUM);
1002 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1003 CHECK_TYPE_VAL(NUM);
1005 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1006 CHECK_TYPE_VAL(NUM);
1008 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1009 CHECK_TYPE_VAL(NUM);
1011 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1012 CHECK_TYPE_VAL(NUM);
1014 case PARSE_EVENTS__TERM_TYPE_NAME:
1015 CHECK_TYPE_VAL(STR);
1017 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1018 CHECK_TYPE_VAL(NUM);
1021 err->str = strdup("unknown term");
1022 err->idx = term->err_term;
1023 err->help = parse_events_formats_error_string(NULL);
1028 * Check term availbility after basic checking so
1029 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1031 * If check availbility at the entry of this function,
1032 * user will see "'<sysfs term>' is not usable in 'perf stat'"
1033 * if an invalid config term is provided for legacy events
1034 * (for example, instructions/badterm/...), which is confusing.
1036 if (!config_term_avail(term->type_term, err))
1039 #undef CHECK_TYPE_VAL
1042 static int config_term_pmu(struct perf_event_attr *attr,
1043 struct parse_events_term *term,
1044 struct parse_events_error *err)
1046 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1047 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1049 * Always succeed for sysfs terms, as we dont know
1050 * at this point what type they need to have.
1054 return config_term_common(attr, term, err);
1057 static int config_term_tracepoint(struct perf_event_attr *attr,
1058 struct parse_events_term *term,
1059 struct parse_events_error *err)
1061 switch (term->type_term) {
1062 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1063 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1064 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1065 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1066 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1067 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1068 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1069 return config_term_common(attr, term, err);
1072 err->idx = term->err_term;
1073 err->str = strdup("unknown term");
1074 err->help = strdup("valid terms: call-graph,stack-size\n");
1082 static int config_attr(struct perf_event_attr *attr,
1083 struct list_head *head,
1084 struct parse_events_error *err,
1085 config_term_func_t config_term)
1087 struct parse_events_term *term;
1089 list_for_each_entry(term, head, list)
1090 if (config_term(attr, term, err))
1096 static int get_config_terms(struct list_head *head_config,
1097 struct list_head *head_terms __maybe_unused)
1099 #define ADD_CONFIG_TERM(__type, __name, __val) \
1101 struct perf_evsel_config_term *__t; \
1103 __t = zalloc(sizeof(*__t)); \
1107 INIT_LIST_HEAD(&__t->list); \
1108 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1109 __t->val.__name = __val; \
1110 list_add_tail(&__t->list, head_terms); \
1113 struct parse_events_term *term;
1115 list_for_each_entry(term, head_config, list) {
1116 switch (term->type_term) {
1117 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1118 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1120 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1121 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1123 case PARSE_EVENTS__TERM_TYPE_TIME:
1124 ADD_CONFIG_TERM(TIME, time, term->val.num);
1126 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1127 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1129 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1130 ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
1132 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1133 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1135 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1136 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1138 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1139 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1141 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1142 ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1144 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1145 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1147 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1148 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1150 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1151 ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1157 #undef ADD_EVSEL_CONFIG
1161 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1162 const char *sys, const char *event,
1163 struct parse_events_error *err,
1164 struct list_head *head_config)
1167 struct perf_event_attr attr;
1169 if (config_attr(&attr, head_config, err,
1170 config_term_tracepoint))
1174 if (strpbrk(sys, "*?"))
1175 return add_tracepoint_multi_sys(list, idx, sys, event,
1178 return add_tracepoint_event(list, idx, sys, event,
1182 int parse_events_add_numeric(struct parse_events_evlist *data,
1183 struct list_head *list,
1184 u32 type, u64 config,
1185 struct list_head *head_config)
1187 struct perf_event_attr attr;
1188 LIST_HEAD(config_terms);
1190 memset(&attr, 0, sizeof(attr));
1192 attr.config = config;
1195 if (config_attr(&attr, head_config, data->error,
1196 config_term_common))
1199 if (get_config_terms(head_config, &config_terms))
1203 return add_event(list, &data->idx, &attr,
1204 get_config_name(head_config), &config_terms);
1207 int parse_events_add_pmu(struct parse_events_evlist *data,
1208 struct list_head *list, char *name,
1209 struct list_head *head_config)
1211 struct perf_event_attr attr;
1212 struct perf_pmu_info info;
1213 struct perf_pmu *pmu;
1214 struct perf_evsel *evsel;
1215 LIST_HEAD(config_terms);
1217 pmu = perf_pmu__find(name);
1221 if (pmu->default_config) {
1222 memcpy(&attr, pmu->default_config,
1223 sizeof(struct perf_event_attr));
1225 memset(&attr, 0, sizeof(attr));
1229 attr.type = pmu->type;
1230 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
1231 return evsel ? 0 : -ENOMEM;
1234 if (perf_pmu__check_alias(pmu, head_config, &info))
1238 * Configure hardcoded terms first, no need to check
1239 * return value when called with fail == 0 ;)
1241 if (config_attr(&attr, head_config, data->error, config_term_pmu))
1244 if (get_config_terms(head_config, &config_terms))
1247 if (perf_pmu__config(pmu, &attr, head_config, data->error))
1250 evsel = __add_event(list, &data->idx, &attr,
1251 get_config_name(head_config), pmu->cpus,
1254 evsel->unit = info.unit;
1255 evsel->scale = info.scale;
1256 evsel->per_pkg = info.per_pkg;
1257 evsel->snapshot = info.snapshot;
1260 return evsel ? 0 : -ENOMEM;
1263 int parse_events_multi_pmu_add(struct parse_events_evlist *data,
1264 char *str, struct list_head **listp)
1266 struct list_head *head;
1267 struct parse_events_term *term;
1268 struct list_head *list;
1269 struct perf_pmu *pmu = NULL;
1273 /* Add it for all PMUs that support the alias */
1274 list = malloc(sizeof(struct list_head));
1277 INIT_LIST_HEAD(list);
1278 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1279 struct perf_pmu_alias *alias;
1281 list_for_each_entry(alias, &pmu->aliases, list) {
1282 if (!strcasecmp(alias->name, str)) {
1283 head = malloc(sizeof(struct list_head));
1286 INIT_LIST_HEAD(head);
1287 if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
1288 str, 1, false, &str, NULL) < 0)
1290 list_add_tail(&term->list, head);
1292 if (!parse_events_add_pmu(data, list,
1294 pr_debug("%s -> %s/%s/\n", str,
1295 pmu->name, alias->str);
1299 parse_events_terms__delete(head);
1309 int parse_events__modifier_group(struct list_head *list,
1312 return parse_events__modifier_event(list, event_mod, true);
1315 void parse_events__set_leader(char *name, struct list_head *list)
1317 struct perf_evsel *leader;
1319 if (list_empty(list)) {
1320 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1324 __perf_evlist__set_leader(list);
1325 leader = list_entry(list->next, struct perf_evsel, node);
1326 leader->group_name = name ? strdup(name) : NULL;
1329 /* list_event is assumed to point to malloc'ed memory */
1330 void parse_events_update_lists(struct list_head *list_event,
1331 struct list_head *list_all)
1334 * Called for single event definition. Update the
1335 * 'all event' list, and reinit the 'single event'
1336 * list, for next event definition.
1338 list_splice_tail(list_event, list_all);
1342 struct event_modifier {
1356 static int get_event_modifier(struct event_modifier *mod, char *str,
1357 struct perf_evsel *evsel)
1359 int eu = evsel ? evsel->attr.exclude_user : 0;
1360 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1361 int eh = evsel ? evsel->attr.exclude_hv : 0;
1362 int eH = evsel ? evsel->attr.exclude_host : 0;
1363 int eG = evsel ? evsel->attr.exclude_guest : 0;
1364 int eI = evsel ? evsel->attr.exclude_idle : 0;
1365 int precise = evsel ? evsel->attr.precise_ip : 0;
1366 int precise_max = 0;
1367 int sample_read = 0;
1368 int pinned = evsel ? evsel->attr.pinned : 0;
1370 int exclude = eu | ek | eh;
1371 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1373 memset(mod, 0, sizeof(*mod));
1378 exclude = eu = ek = eh = 1;
1380 } else if (*str == 'k') {
1382 exclude = eu = ek = eh = 1;
1384 } else if (*str == 'h') {
1386 exclude = eu = ek = eh = 1;
1388 } else if (*str == 'G') {
1390 exclude_GH = eG = eH = 1;
1392 } else if (*str == 'H') {
1394 exclude_GH = eG = eH = 1;
1396 } else if (*str == 'I') {
1398 } else if (*str == 'p') {
1400 /* use of precise requires exclude_guest */
1403 } else if (*str == 'P') {
1405 } else if (*str == 'S') {
1407 } else if (*str == 'D') {
1418 * 0 - SAMPLE_IP can have arbitrary skid
1419 * 1 - SAMPLE_IP must have constant skid
1420 * 2 - SAMPLE_IP requested to have 0 skid
1421 * 3 - SAMPLE_IP must have 0 skid
1423 * See also PERF_RECORD_MISC_EXACT_IP
1434 mod->precise = precise;
1435 mod->precise_max = precise_max;
1436 mod->exclude_GH = exclude_GH;
1437 mod->sample_read = sample_read;
1438 mod->pinned = pinned;
1444 * Basic modifier sanity check to validate it contains only one
1445 * instance of any modifier (apart from 'p') present.
1447 static int check_modifier(char *str)
1451 /* The sizeof includes 0 byte as well. */
1452 if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
1456 if (*p != 'p' && strchr(p + 1, *p))
1464 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1466 struct perf_evsel *evsel;
1467 struct event_modifier mod;
1472 if (check_modifier(str))
1475 if (!add && get_event_modifier(&mod, str, NULL))
1478 __evlist__for_each_entry(list, evsel) {
1479 if (add && get_event_modifier(&mod, str, evsel))
1482 evsel->attr.exclude_user = mod.eu;
1483 evsel->attr.exclude_kernel = mod.ek;
1484 evsel->attr.exclude_hv = mod.eh;
1485 evsel->attr.precise_ip = mod.precise;
1486 evsel->attr.exclude_host = mod.eH;
1487 evsel->attr.exclude_guest = mod.eG;
1488 evsel->attr.exclude_idle = mod.eI;
1489 evsel->exclude_GH = mod.exclude_GH;
1490 evsel->sample_read = mod.sample_read;
1491 evsel->precise_max = mod.precise_max;
1493 if (perf_evsel__is_group_leader(evsel))
1494 evsel->attr.pinned = mod.pinned;
1500 int parse_events_name(struct list_head *list, char *name)
1502 struct perf_evsel *evsel;
1504 __evlist__for_each_entry(list, evsel) {
1506 evsel->name = strdup(name);
1513 comp_pmu(const void *p1, const void *p2)
1515 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1516 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1518 return strcasecmp(pmu1->symbol, pmu2->symbol);
1521 static void perf_pmu__parse_cleanup(void)
1523 if (perf_pmu_events_list_num > 0) {
1524 struct perf_pmu_event_symbol *p;
1527 for (i = 0; i < perf_pmu_events_list_num; i++) {
1528 p = perf_pmu_events_list + i;
1531 zfree(&perf_pmu_events_list);
1532 perf_pmu_events_list_num = 0;
1536 #define SET_SYMBOL(str, stype) \
1545 * Read the pmu events list from sysfs
1546 * Save it into perf_pmu_events_list
1548 static void perf_pmu__parse_init(void)
1551 struct perf_pmu *pmu = NULL;
1552 struct perf_pmu_alias *alias;
1556 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1557 list_for_each_entry(alias, &pmu->aliases, list) {
1558 if (strchr(alias->name, '-'))
1565 perf_pmu_events_list_num = -1;
1568 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1569 if (!perf_pmu_events_list)
1571 perf_pmu_events_list_num = len;
1575 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1576 list_for_each_entry(alias, &pmu->aliases, list) {
1577 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1578 char *tmp = strchr(alias->name, '-');
1581 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1582 PMU_EVENT_SYMBOL_PREFIX);
1584 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1587 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1592 qsort(perf_pmu_events_list, len,
1593 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1597 perf_pmu__parse_cleanup();
1600 enum perf_pmu_event_symbol_type
1601 perf_pmu__parse_check(const char *name)
1603 struct perf_pmu_event_symbol p, *r;
1605 /* scan kernel pmu events from sysfs if needed */
1606 if (perf_pmu_events_list_num == 0)
1607 perf_pmu__parse_init();
1609 * name "cpu" could be prefix of cpu-cycles or cpu// events.
1610 * cpu-cycles has been handled by hardcode.
1611 * So it must be cpu// events, not kernel pmu event.
1613 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1614 return PMU_EVENT_SYMBOL_ERR;
1616 p.symbol = strdup(name);
1617 r = bsearch(&p, perf_pmu_events_list,
1618 (size_t) perf_pmu_events_list_num,
1619 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1621 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1624 static int parse_events__scanner(const char *str, void *data, int start_token)
1626 YY_BUFFER_STATE buffer;
1630 ret = parse_events_lex_init_extra(start_token, &scanner);
1634 buffer = parse_events__scan_string(str, scanner);
1637 parse_events_debug = 1;
1639 ret = parse_events_parse(data, scanner);
1641 parse_events__flush_buffer(buffer, scanner);
1642 parse_events__delete_buffer(buffer, scanner);
1643 parse_events_lex_destroy(scanner);
1648 * parse event config string, return a list of event terms.
1650 int parse_events_terms(struct list_head *terms, const char *str)
1652 struct parse_events_terms data = {
1657 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1659 list_splice(data.terms, terms);
1664 parse_events_terms__delete(data.terms);
1668 int parse_events(struct perf_evlist *evlist, const char *str,
1669 struct parse_events_error *err)
1671 struct parse_events_evlist data = {
1672 .list = LIST_HEAD_INIT(data.list),
1673 .idx = evlist->nr_entries,
1679 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1680 perf_pmu__parse_cleanup();
1682 struct perf_evsel *last;
1684 if (list_empty(&data.list)) {
1685 WARN_ONCE(true, "WARNING: event parser found nothing");
1689 perf_evlist__splice_list_tail(evlist, &data.list);
1690 evlist->nr_groups += data.nr_groups;
1691 last = perf_evlist__last(evlist);
1692 last->cmdline_group_boundary = true;
1698 * There are 2 users - builtin-record and builtin-test objects.
1699 * Both call perf_evlist__delete in case of error, so we dont
1705 #define MAX_WIDTH 1000
1706 static int get_term_width(void)
1710 get_term_dimensions(&ws);
1711 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1714 static void parse_events_print_error(struct parse_events_error *err,
1717 const char *str = "invalid or unsupported event: ";
1718 char _buf[MAX_WIDTH];
1719 char *buf = (char *) event;
1723 /* -2 for extra '' in the final fprintf */
1724 int width = get_term_width() - 2;
1725 int len_event = strlen(event);
1726 int len_str, max_len, cut = 0;
1729 * Maximum error index indent, we will cut
1730 * the event string if it's bigger.
1732 int max_err_idx = 13;
1735 * Let's be specific with the message when
1736 * we have the precise error.
1738 str = "event syntax error: ";
1739 len_str = strlen(str);
1740 max_len = width - len_str;
1744 /* We're cutting from the beginning. */
1745 if (err->idx > max_err_idx)
1746 cut = err->idx - max_err_idx;
1748 strncpy(buf, event + cut, max_len);
1750 /* Mark cut parts with '..' on both sides. */
1752 buf[0] = buf[1] = '.';
1754 if ((len_event - cut) > max_len) {
1755 buf[max_len - 1] = buf[max_len - 2] = '.';
1759 idx = len_str + err->idx - cut;
1762 fprintf(stderr, "%s'%s'\n", str, buf);
1764 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1766 fprintf(stderr, "\n%s\n", err->help);
1771 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1776 int parse_events_option(const struct option *opt, const char *str,
1777 int unset __maybe_unused)
1779 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1780 struct parse_events_error err = { .idx = 0, };
1781 int ret = parse_events(evlist, str, &err);
1784 parse_events_print_error(&err, str);
1790 foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1791 int (*func)(struct perf_evsel *evsel,
1795 struct perf_evsel *last = NULL;
1799 * Don't return when list_empty, give func a chance to report
1800 * error when it found last == NULL.
1802 * So no need to WARN here, let *func do this.
1804 if (evlist->nr_entries > 0)
1805 last = perf_evlist__last(evlist);
1808 err = (*func)(last, arg);
1814 if (last->node.prev == &evlist->entries)
1816 last = list_entry(last->node.prev, struct perf_evsel, node);
1817 } while (!last->cmdline_group_boundary);
1822 static int set_filter(struct perf_evsel *evsel, const void *arg)
1824 const char *str = arg;
1826 int nr_addr_filters = 0;
1827 struct perf_pmu *pmu = NULL;
1832 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1833 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
1835 "not enough memory to hold filter string\n");
1842 while ((pmu = perf_pmu__scan(pmu)) != NULL)
1843 if (pmu->type == evsel->attr.type) {
1849 perf_pmu__scan_file(pmu, "nr_addr_filters",
1850 "%d", &nr_addr_filters);
1852 if (!nr_addr_filters)
1855 if (perf_evsel__append_addr_filter(evsel, str) < 0) {
1857 "not enough memory to hold filter string\n");
1865 "--filter option should follow a -e tracepoint or HW tracer option\n");
1870 int parse_filter(const struct option *opt, const char *str,
1871 int unset __maybe_unused)
1873 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1875 return foreach_evsel_in_last_glob(evlist, set_filter,
1879 static int add_exclude_perf_filter(struct perf_evsel *evsel,
1880 const void *arg __maybe_unused)
1882 char new_filter[64];
1884 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1886 "--exclude-perf option should follow a -e tracepoint option\n");
1890 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1892 if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
1894 "not enough memory to hold filter string\n");
1901 int exclude_perf(const struct option *opt,
1902 const char *arg __maybe_unused,
1903 int unset __maybe_unused)
1905 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1907 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1911 static const char * const event_type_descriptors[] = {
1915 "Hardware cache event",
1916 "Raw hardware event descriptor",
1917 "Hardware breakpoint",
1920 static int cmp_string(const void *a, const void *b)
1922 const char * const *as = a;
1923 const char * const *bs = b;
1925 return strcmp(*as, *bs);
1929 * Print the events from <debugfs_mount_point>/tracing/events
1932 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1935 DIR *sys_dir, *evt_dir;
1936 struct dirent *sys_dirent, *evt_dirent;
1937 char evt_path[MAXPATHLEN];
1938 char dir_path[MAXPATHLEN];
1939 char **evt_list = NULL;
1940 unsigned int evt_i = 0, evt_num = 0;
1941 bool evt_num_known = false;
1944 sys_dir = opendir(tracing_events_path);
1948 if (evt_num_known) {
1949 evt_list = zalloc(sizeof(char *) * evt_num);
1951 goto out_close_sys_dir;
1954 for_each_subsystem(sys_dir, sys_dirent) {
1955 if (subsys_glob != NULL &&
1956 !strglobmatch(sys_dirent->d_name, subsys_glob))
1959 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1960 sys_dirent->d_name);
1961 evt_dir = opendir(dir_path);
1965 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1966 if (event_glob != NULL &&
1967 !strglobmatch(evt_dirent->d_name, event_glob))
1970 if (!evt_num_known) {
1975 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1976 sys_dirent->d_name, evt_dirent->d_name);
1978 evt_list[evt_i] = strdup(evt_path);
1979 if (evt_list[evt_i] == NULL)
1980 goto out_close_evt_dir;
1987 if (!evt_num_known) {
1988 evt_num_known = true;
1991 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1993 while (evt_i < evt_num) {
1995 printf("%s ", evt_list[evt_i++]);
1998 printf(" %-50s [%s]\n", evt_list[evt_i++],
1999 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2001 if (evt_num && pager_in_use())
2006 for (evt_i = 0; evt_i < evt_num; evt_i++)
2007 zfree(&evt_list[evt_i]);
2016 printf("FATAL: not enough memory to print %s\n",
2017 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2023 * Check whether event is in <debugfs_mount_point>/tracing/events
2026 int is_valid_tracepoint(const char *event_string)
2028 DIR *sys_dir, *evt_dir;
2029 struct dirent *sys_dirent, *evt_dirent;
2030 char evt_path[MAXPATHLEN];
2031 char dir_path[MAXPATHLEN];
2033 sys_dir = opendir(tracing_events_path);
2037 for_each_subsystem(sys_dir, sys_dirent) {
2039 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
2040 sys_dirent->d_name);
2041 evt_dir = opendir(dir_path);
2045 for_each_event(sys_dirent, evt_dir, evt_dirent) {
2046 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2047 sys_dirent->d_name, evt_dirent->d_name);
2048 if (!strcmp(evt_path, event_string)) {
2060 static bool is_event_supported(u8 type, unsigned config)
2064 struct perf_evsel *evsel;
2065 struct perf_event_attr attr = {
2070 struct thread_map *tmap = thread_map__new_by_tid(0);
2075 evsel = perf_evsel__new(&attr);
2077 open_return = perf_evsel__open(evsel, NULL, tmap);
2078 ret = open_return >= 0;
2080 if (open_return == -EACCES) {
2082 * This happens if the paranoid value
2083 * /proc/sys/kernel/perf_event_paranoid is set to 2
2084 * Re-run with exclude_kernel set; we don't do that
2085 * by default as some ARM machines do not support it.
2088 evsel->attr.exclude_kernel = 1;
2089 ret = perf_evsel__open(evsel, NULL, tmap) >= 0;
2091 perf_evsel__delete(evsel);
2097 void print_sdt_events(const char *subsys_glob, const char *event_glob,
2100 struct probe_cache *pcache;
2101 struct probe_cache_entry *ent;
2102 struct strlist *bidlist, *sdtlist;
2103 struct strlist_config cfg = {.dont_dupstr = true};
2104 struct str_node *nd, *nd2;
2105 char *buf, *path, *ptr = NULL;
2106 bool show_detail = false;
2109 sdtlist = strlist__new(NULL, &cfg);
2111 pr_debug("Failed to allocate new strlist for SDT\n");
2114 bidlist = build_id_cache__list_all(true);
2116 pr_debug("Failed to get buildids: %d\n", errno);
2119 strlist__for_each_entry(nd, bidlist) {
2120 pcache = probe_cache__new(nd->s);
2123 list_for_each_entry(ent, &pcache->entries, node) {
2127 !strglobmatch(ent->pev.group, subsys_glob))
2130 !strglobmatch(ent->pev.event, event_glob))
2132 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2133 ent->pev.event, nd->s);
2135 strlist__add(sdtlist, buf);
2137 probe_cache__delete(pcache);
2139 strlist__delete(bidlist);
2141 strlist__for_each_entry(nd, sdtlist) {
2142 buf = strchr(nd->s, '@');
2146 printf("%s ", nd->s);
2149 nd2 = strlist__next(nd);
2151 ptr = strchr(nd2->s, '@');
2154 if (strcmp(nd->s, nd2->s) == 0)
2158 path = build_id_cache__origname(buf);
2159 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2161 printf(" %-50s [%s]\n", buf, "SDT event");
2165 printf(" %-50s [%s]\n", nd->s, "SDT event");
2167 if (strcmp(nd->s, nd2->s) != 0)
2168 show_detail = false;
2173 strlist__delete(sdtlist);
2176 int print_hwcache_events(const char *event_glob, bool name_only)
2178 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2180 char **evt_list = NULL;
2181 bool evt_num_known = false;
2184 if (evt_num_known) {
2185 evt_list = zalloc(sizeof(char *) * evt_num);
2190 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2191 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2192 /* skip invalid cache type */
2193 if (!perf_evsel__is_cache_op_valid(type, op))
2196 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2197 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2198 name, sizeof(name));
2199 if (event_glob != NULL && !strglobmatch(name, event_glob))
2202 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2203 type | (op << 8) | (i << 16)))
2206 if (!evt_num_known) {
2211 evt_list[evt_i] = strdup(name);
2212 if (evt_list[evt_i] == NULL)
2219 if (!evt_num_known) {
2220 evt_num_known = true;
2223 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2225 while (evt_i < evt_num) {
2227 printf("%s ", evt_list[evt_i++]);
2230 printf(" %-50s [%s]\n", evt_list[evt_i++],
2231 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2233 if (evt_num && pager_in_use())
2238 for (evt_i = 0; evt_i < evt_num; evt_i++)
2239 zfree(&evt_list[evt_i]);
2244 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2250 void print_symbol_events(const char *event_glob, unsigned type,
2251 struct event_symbol *syms, unsigned max,
2254 unsigned int i, evt_i = 0, evt_num = 0;
2255 char name[MAX_NAME_LEN];
2256 char **evt_list = NULL;
2257 bool evt_num_known = false;
2260 if (evt_num_known) {
2261 evt_list = zalloc(sizeof(char *) * evt_num);
2267 for (i = 0; i < max; i++, syms++) {
2269 if (event_glob != NULL && syms->symbol != NULL &&
2270 !(strglobmatch(syms->symbol, event_glob) ||
2271 (syms->alias && strglobmatch(syms->alias, event_glob))))
2274 if (!is_event_supported(type, i))
2277 if (!evt_num_known) {
2282 if (!name_only && strlen(syms->alias))
2283 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2285 strncpy(name, syms->symbol, MAX_NAME_LEN);
2287 evt_list[evt_i] = strdup(name);
2288 if (evt_list[evt_i] == NULL)
2293 if (!evt_num_known) {
2294 evt_num_known = true;
2297 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2299 while (evt_i < evt_num) {
2301 printf("%s ", evt_list[evt_i++]);
2304 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2306 if (evt_num && pager_in_use())
2311 for (evt_i = 0; evt_i < evt_num; evt_i++)
2312 zfree(&evt_list[evt_i]);
2317 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2323 * Print the help text for the event symbols:
2325 void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2328 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2329 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2331 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2332 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2334 print_hwcache_events(event_glob, name_only);
2336 print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
2338 if (event_glob != NULL)
2342 printf(" %-50s [%s]\n",
2344 event_type_descriptors[PERF_TYPE_RAW]);
2345 printf(" %-50s [%s]\n",
2346 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2347 event_type_descriptors[PERF_TYPE_RAW]);
2349 printf(" (see 'man perf-list' on how to encode it)\n\n");
2351 printf(" %-50s [%s]\n",
2352 "mem:<addr>[/len][:access]",
2353 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2358 print_tracepoint_events(NULL, NULL, name_only);
2360 print_sdt_events(NULL, NULL, name_only);
2363 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2365 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2368 static int new_term(struct parse_events_term **_term,
2369 struct parse_events_term *temp,
2372 struct parse_events_term *term;
2374 term = malloc(sizeof(*term));
2379 INIT_LIST_HEAD(&term->list);
2381 switch (term->type_val) {
2382 case PARSE_EVENTS__TERM_TYPE_NUM:
2383 term->val.num = num;
2385 case PARSE_EVENTS__TERM_TYPE_STR:
2386 term->val.str = str;
2397 int parse_events_term__num(struct parse_events_term **term,
2398 int type_term, char *config, u64 num,
2400 void *loc_term_, void *loc_val_)
2402 YYLTYPE *loc_term = loc_term_;
2403 YYLTYPE *loc_val = loc_val_;
2405 struct parse_events_term temp = {
2406 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2407 .type_term = type_term,
2409 .no_value = no_value,
2410 .err_term = loc_term ? loc_term->first_column : 0,
2411 .err_val = loc_val ? loc_val->first_column : 0,
2414 return new_term(term, &temp, NULL, num);
2417 int parse_events_term__str(struct parse_events_term **term,
2418 int type_term, char *config, char *str,
2419 void *loc_term_, void *loc_val_)
2421 YYLTYPE *loc_term = loc_term_;
2422 YYLTYPE *loc_val = loc_val_;
2424 struct parse_events_term temp = {
2425 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2426 .type_term = type_term,
2428 .err_term = loc_term ? loc_term->first_column : 0,
2429 .err_val = loc_val ? loc_val->first_column : 0,
2432 return new_term(term, &temp, str, 0);
2435 int parse_events_term__sym_hw(struct parse_events_term **term,
2436 char *config, unsigned idx)
2438 struct event_symbol *sym;
2439 struct parse_events_term temp = {
2440 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2441 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
2442 .config = config ?: (char *) "event",
2445 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2446 sym = &event_symbols_hw[idx];
2448 return new_term(term, &temp, (char *) sym->symbol, 0);
2451 int parse_events_term__clone(struct parse_events_term **new,
2452 struct parse_events_term *term)
2454 struct parse_events_term temp = {
2455 .type_val = term->type_val,
2456 .type_term = term->type_term,
2457 .config = term->config,
2458 .err_term = term->err_term,
2459 .err_val = term->err_val,
2462 return new_term(new, &temp, term->val.str, term->val.num);
2465 int parse_events_copy_term_list(struct list_head *old,
2466 struct list_head **new)
2468 struct parse_events_term *term, *n;
2476 *new = malloc(sizeof(struct list_head));
2479 INIT_LIST_HEAD(*new);
2481 list_for_each_entry (term, old, list) {
2482 ret = parse_events_term__clone(&n, term);
2485 list_add_tail(&n->list, *new);
2490 void parse_events_terms__purge(struct list_head *terms)
2492 struct parse_events_term *term, *h;
2494 list_for_each_entry_safe(term, h, terms, list) {
2495 if (term->array.nr_ranges)
2496 zfree(&term->array.ranges);
2497 list_del_init(&term->list);
2502 void parse_events_terms__delete(struct list_head *terms)
2506 parse_events_terms__purge(terms);
2510 void parse_events__clear_array(struct parse_events_array *a)
2515 void parse_events_evlist_error(struct parse_events_evlist *data,
2516 int idx, const char *str)
2518 struct parse_events_error *err = data->error;
2523 err->str = strdup(str);
2524 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2527 static void config_terms_list(char *buf, size_t buf_sz)
2533 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2534 const char *name = config_term_names[i];
2536 if (!config_term_avail(i, NULL))
2543 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2555 * Return string contains valid config terms of an event.
2556 * @additional_terms: For terms such as PMU sysfs terms.
2558 char *parse_events_formats_error_string(char *additional_terms)
2561 /* "no-overwrite" is the longest name */
2562 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2563 (sizeof("no-overwrite") - 1)];
2565 config_terms_list(static_terms, sizeof(static_terms));
2567 if (additional_terms) {
2568 if (asprintf(&str, "valid terms: %s,%s",
2569 additional_terms, static_terms) < 0)
2572 if (asprintf(&str, "valid terms: %s", static_terms) < 0)