1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/list.h>
3 #include <linux/compiler.h>
12 #include <api/fs/fs.h>
16 #include "parse-events.h"
19 #include "pmu-events/pmu-events.h"
23 struct perf_pmu_format {
26 DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS);
27 struct list_head list;
30 #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
32 int perf_pmu_parse(struct list_head *list, char *name);
33 extern FILE *perf_pmu_in;
35 static LIST_HEAD(pmus);
38 * Parse & process all the sysfs attributes located under
39 * the directory specified in 'dir' parameter.
41 int perf_pmu__format_parse(char *dir, struct list_head *head)
43 struct dirent *evt_ent;
47 format_dir = opendir(dir);
51 while (!ret && (evt_ent = readdir(format_dir))) {
53 char *name = evt_ent->d_name;
56 if (!strcmp(name, ".") || !strcmp(name, ".."))
59 snprintf(path, PATH_MAX, "%s/%s", dir, name);
62 file = fopen(path, "r");
67 ret = perf_pmu_parse(head, name);
76 * Reading/parsing the default pmu format definition, which should be
78 * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes.
80 static int pmu_format(const char *name, struct list_head *format)
84 const char *sysfs = sysfs__mountpoint();
89 snprintf(path, PATH_MAX,
90 "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name);
92 if (stat(path, &st) < 0)
93 return 0; /* no error if format does not exist */
95 if (perf_pmu__format_parse(path, format))
101 static int convert_scale(const char *scale, char **end, double *sval)
107 * save current locale
109 lc = setlocale(LC_NUMERIC, NULL);
112 * The lc string may be allocated in static storage,
113 * so get a dynamic copy to make it survive setlocale
123 * force to C locale to ensure kernel
124 * scale string is converted correctly.
125 * kernel uses default C locale.
127 setlocale(LC_NUMERIC, "C");
129 *sval = strtod(scale, end);
133 setlocale(LC_NUMERIC, lc);
138 static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name)
146 scnprintf(path, PATH_MAX, "%s/%s.scale", dir, name);
148 fd = open(path, O_RDONLY);
152 if (fstat(fd, &st) < 0)
155 sret = read(fd, scale, sizeof(scale)-1);
159 if (scale[sret - 1] == '\n')
160 scale[sret - 1] = '\0';
164 ret = convert_scale(scale, NULL, &alias->scale);
170 static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name)
176 scnprintf(path, PATH_MAX, "%s/%s.unit", dir, name);
178 fd = open(path, O_RDONLY);
182 sret = read(fd, alias->unit, UNIT_MAX_LEN);
188 if (alias->unit[sret - 1] == '\n')
189 alias->unit[sret - 1] = '\0';
191 alias->unit[sret] = '\0';
196 alias->unit[0] = '\0';
201 perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name)
206 scnprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name);
208 fd = open(path, O_RDONLY);
214 alias->per_pkg = true;
218 static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
219 char *dir, char *name)
224 scnprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name);
226 fd = open(path, O_RDONLY);
230 alias->snapshot = true;
235 static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
236 char *desc, char *val,
237 char *long_desc, char *topic,
238 char *unit, char *perpkg,
242 struct perf_pmu_alias *alias;
246 alias = malloc(sizeof(*alias));
250 INIT_LIST_HEAD(&alias->terms);
252 alias->unit[0] = '\0';
253 alias->per_pkg = false;
254 alias->snapshot = false;
256 ret = parse_events_terms(&alias->terms, val);
258 pr_err("Cannot parse alias %s: %d\n", val, ret);
263 alias->name = strdup(name);
266 * load unit name and scale if available
268 perf_pmu__parse_unit(alias, dir, name);
269 perf_pmu__parse_scale(alias, dir, name);
270 perf_pmu__parse_per_pkg(alias, dir, name);
271 perf_pmu__parse_snapshot(alias, dir, name);
274 alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL;
275 alias->metric_name = metric_name ? strdup(metric_name): NULL;
276 alias->desc = desc ? strdup(desc) : NULL;
277 alias->long_desc = long_desc ? strdup(long_desc) :
278 desc ? strdup(desc) : NULL;
279 alias->topic = topic ? strdup(topic) : NULL;
281 if (convert_scale(unit, &unit, &alias->scale) < 0)
283 snprintf(alias->unit, sizeof(alias->unit), "%s", unit);
285 alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1;
286 alias->str = strdup(val);
288 list_add_tail(&alias->list, list);
293 static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file)
298 ret = fread(buf, 1, sizeof(buf), file);
304 return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
308 static inline bool pmu_alias_info_file(char *name)
313 if (len > 5 && !strcmp(name + len - 5, ".unit"))
315 if (len > 6 && !strcmp(name + len - 6, ".scale"))
317 if (len > 8 && !strcmp(name + len - 8, ".per-pkg"))
319 if (len > 9 && !strcmp(name + len - 9, ".snapshot"))
326 * Process all the sysfs attributes located under the directory
327 * specified in 'dir' parameter.
329 static int pmu_aliases_parse(char *dir, struct list_head *head)
331 struct dirent *evt_ent;
334 event_dir = opendir(dir);
338 while ((evt_ent = readdir(event_dir))) {
340 char *name = evt_ent->d_name;
343 if (!strcmp(name, ".") || !strcmp(name, ".."))
347 * skip info files parsed in perf_pmu__new_alias()
349 if (pmu_alias_info_file(name))
352 scnprintf(path, PATH_MAX, "%s/%s", dir, name);
354 file = fopen(path, "r");
356 pr_debug("Cannot open %s\n", path);
360 if (perf_pmu__new_alias(head, dir, name, file) < 0)
361 pr_debug("Cannot set up %s\n", name);
370 * Reading the pmu event aliases definition, which should be located at:
371 * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes.
373 static int pmu_aliases(const char *name, struct list_head *head)
377 const char *sysfs = sysfs__mountpoint();
382 snprintf(path, PATH_MAX,
383 "%s/bus/event_source/devices/%s/events", sysfs, name);
385 if (stat(path, &st) < 0)
386 return 0; /* no error if 'events' does not exist */
388 if (pmu_aliases_parse(path, head))
394 static int pmu_alias_terms(struct perf_pmu_alias *alias,
395 struct list_head *terms)
397 struct parse_events_term *term, *cloned;
401 list_for_each_entry(term, &alias->terms, list) {
402 ret = parse_events_term__clone(&cloned, term);
404 parse_events_terms__purge(&list);
408 * Weak terms don't override command line options,
409 * which we don't want for implicit terms in aliases.
412 list_add_tail(&cloned->list, &list);
414 list_splice(&list, terms);
419 * Reading/parsing the default pmu type value, which should be
421 * /sys/bus/event_source/devices/<dev>/type as sysfs attribute.
423 static int pmu_type(const char *name, __u32 *type)
429 const char *sysfs = sysfs__mountpoint();
434 snprintf(path, PATH_MAX,
435 "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name);
437 if (stat(path, &st) < 0)
440 file = fopen(path, "r");
444 if (1 != fscanf(file, "%u", type))
451 /* Add all pmus in sysfs to pmu list: */
452 static void pmu_read_sysfs(void)
457 const char *sysfs = sysfs__mountpoint();
462 snprintf(path, PATH_MAX,
463 "%s" EVENT_SOURCE_DEVICE_PATH, sysfs);
469 while ((dent = readdir(dir))) {
470 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
472 /* add to static LIST_HEAD(pmus): */
473 perf_pmu__find(dent->d_name);
479 static struct cpu_map *__pmu_cpumask(const char *path)
482 struct cpu_map *cpus;
484 file = fopen(path, "r");
488 cpus = cpu_map__read(file);
494 * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64)
495 * may have a "cpus" file.
497 #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask"
498 #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus"
500 static struct cpu_map *pmu_cpumask(const char *name)
503 struct cpu_map *cpus;
504 const char *sysfs = sysfs__mountpoint();
505 const char *templates[] = {
506 CPUS_TEMPLATE_UNCORE,
510 const char **template;
515 for (template = templates; *template; template++) {
516 snprintf(path, PATH_MAX, *template, sysfs, name);
517 cpus = __pmu_cpumask(path);
525 static bool pmu_is_uncore(const char *name)
528 struct cpu_map *cpus;
529 const char *sysfs = sysfs__mountpoint();
531 snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name);
532 cpus = __pmu_cpumask(path);
539 * Return the CPU id as a raw string.
541 * Each architecture should provide a more precise id string that
542 * can be use to match the architecture's "mapfile".
544 char * __weak get_cpuid_str(void)
550 * From the pmu_events_map, find the table of PMU events that corresponds
551 * to the current running CPU. Then, add all PMU events from that table
554 static void pmu_add_cpu_aliases(struct list_head *head, const char *name)
557 struct pmu_events_map *map;
558 struct pmu_event *pe;
562 cpuid = getenv("PERF_CPUID");
564 cpuid = strdup(cpuid);
566 cpuid = get_cpuid_str();
571 pr_debug("Using CPUID %s\n", cpuid);
577 map = &pmu_events_map[i++];
581 if (!strcmp(map->cpuid, cpuid))
586 * Found a matching PMU events table. Create aliases
592 pe = &map->table[i++];
596 pname = pe->pmu ? pe->pmu : "cpu";
597 if (strncmp(pname, name, strlen(pname)))
600 /* need type casts to override 'const' */
601 __perf_pmu__new_alias(head, NULL, (char *)pe->name,
602 (char *)pe->desc, (char *)pe->event,
603 (char *)pe->long_desc, (char *)pe->topic,
604 (char *)pe->unit, (char *)pe->perpkg,
605 (char *)pe->metric_expr,
606 (char *)pe->metric_name);
613 struct perf_event_attr * __weak
614 perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
619 static struct perf_pmu *pmu_lookup(const char *name)
621 struct perf_pmu *pmu;
627 * The pmu data we store & need consists of the pmu
628 * type value and format definitions. Load both right
631 if (pmu_format(name, &format))
635 * Check the type first to avoid unnecessary work.
637 if (pmu_type(name, &type))
640 if (pmu_aliases(name, &aliases))
643 pmu_add_cpu_aliases(&aliases, name);
644 pmu = zalloc(sizeof(*pmu));
648 pmu->cpus = pmu_cpumask(name);
650 pmu->is_uncore = pmu_is_uncore(name);
652 INIT_LIST_HEAD(&pmu->format);
653 INIT_LIST_HEAD(&pmu->aliases);
654 list_splice(&format, &pmu->format);
655 list_splice(&aliases, &pmu->aliases);
656 pmu->name = strdup(name);
658 list_add_tail(&pmu->list, &pmus);
660 pmu->default_config = perf_pmu__get_default_config(pmu);
665 static struct perf_pmu *pmu_find(const char *name)
667 struct perf_pmu *pmu;
669 list_for_each_entry(pmu, &pmus, list)
670 if (!strcmp(pmu->name, name))
676 struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu)
679 * pmu iterator: If pmu is NULL, we start at the begin,
680 * otherwise return the next pmu. Returns NULL on end.
684 pmu = list_prepare_entry(pmu, &pmus, list);
686 list_for_each_entry_continue(pmu, &pmus, list)
691 struct perf_pmu *perf_pmu__find(const char *name)
693 struct perf_pmu *pmu;
696 * Once PMU is loaded it stays in the list,
697 * so we keep us from multiple reading/parsing
698 * the pmu format definitions.
700 pmu = pmu_find(name);
704 return pmu_lookup(name);
707 static struct perf_pmu_format *
708 pmu_find_format(struct list_head *formats, const char *name)
710 struct perf_pmu_format *format;
712 list_for_each_entry(format, formats, list)
713 if (!strcmp(format->name, name))
719 __u64 perf_pmu__format_bits(struct list_head *formats, const char *name)
721 struct perf_pmu_format *format = pmu_find_format(formats, name);
728 for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS)
729 bits |= 1ULL << fbit;
735 * Sets value based on the format definition (format parameter)
736 * and unformated value (value parameter).
738 static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v,
741 unsigned long fbit, vbit;
743 for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) {
745 if (!test_bit(fbit, format))
748 if (value & (1llu << vbit++))
749 *v |= (1llu << fbit);
751 *v &= ~(1llu << fbit);
755 static __u64 pmu_format_max_value(const unsigned long *format)
759 w = bitmap_weight(format, PERF_PMU_FORMAT_BITS);
763 return (1ULL << w) - 1;
768 * Term is a string term, and might be a param-term. Try to look up it's value
769 * in the remaining terms.
770 * - We have a term like "base-or-format-term=param-term",
771 * - We need to find the value supplied for "param-term" (with param-term named
772 * in a config string) later on in the term list.
774 static int pmu_resolve_param_term(struct parse_events_term *term,
775 struct list_head *head_terms,
778 struct parse_events_term *t;
780 list_for_each_entry(t, head_terms, list) {
781 if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
782 if (!strcmp(t->config, term->config)) {
791 printf("Required parameter '%s' not specified\n", term->config);
796 static char *pmu_formats_string(struct list_head *formats)
798 struct perf_pmu_format *format;
800 struct strbuf buf = STRBUF_INIT;
806 /* sysfs exported terms */
807 list_for_each_entry(format, formats, list)
808 if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0)
811 str = strbuf_detach(&buf, NULL);
813 strbuf_release(&buf);
819 * Setup one of config[12] attr members based on the
820 * user input data - term parameter.
822 static int pmu_config_term(struct list_head *formats,
823 struct perf_event_attr *attr,
824 struct parse_events_term *term,
825 struct list_head *head_terms,
826 bool zero, struct parse_events_error *err)
828 struct perf_pmu_format *format;
833 * If this is a parameter we've already used for parameterized-eval,
834 * skip it in normal eval.
840 * Hardcoded terms should be already in, so nothing
841 * to be done for them.
843 if (parse_events__is_hardcoded_term(term))
846 format = pmu_find_format(formats, term->config);
849 printf("Invalid event/parameter '%s'\n", term->config);
851 char *pmu_term = pmu_formats_string(formats);
853 err->idx = term->err_term;
854 err->str = strdup("unknown term");
855 err->help = parse_events_formats_error_string(pmu_term);
861 switch (format->value) {
862 case PERF_PMU_FORMAT_VALUE_CONFIG:
865 case PERF_PMU_FORMAT_VALUE_CONFIG1:
868 case PERF_PMU_FORMAT_VALUE_CONFIG2:
876 * Either directly use a numeric term, or try to translate string terms
877 * using event parameters.
879 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
880 if (term->no_value &&
881 bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) {
883 err->idx = term->err_val;
884 err->str = strdup("no value assigned for term");
890 } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
891 if (strcmp(term->val.str, "?")) {
893 pr_info("Invalid sysfs entry %s=%s\n",
894 term->config, term->val.str);
897 err->idx = term->err_val;
898 err->str = strdup("expected numeric value");
903 if (pmu_resolve_param_term(term, head_terms, &val))
908 max_val = pmu_format_max_value(format->bits);
911 err->idx = term->err_val;
912 if (asprintf(&err->str,
913 "value too big for format, maximum is %llu",
914 (unsigned long long)max_val) < 0)
915 err->str = strdup("value too big for format");
919 * Assume we don't care if !err, in which case the value will be
920 * silently truncated.
924 pmu_format_value(format->bits, val, vp, zero);
928 int perf_pmu__config_terms(struct list_head *formats,
929 struct perf_event_attr *attr,
930 struct list_head *head_terms,
931 bool zero, struct parse_events_error *err)
933 struct parse_events_term *term;
935 list_for_each_entry(term, head_terms, list) {
936 if (pmu_config_term(formats, attr, term, head_terms,
945 * Configures event's 'attr' parameter based on the:
946 * 1) users input - specified in terms parameter
947 * 2) pmu format definitions - specified by pmu parameter
949 int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
950 struct list_head *head_terms,
951 struct parse_events_error *err)
953 bool zero = !!pmu->default_config;
955 attr->type = pmu->type;
956 return perf_pmu__config_terms(&pmu->format, attr, head_terms,
960 static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu,
961 struct parse_events_term *term)
963 struct perf_pmu_alias *alias;
966 if (parse_events__is_hardcoded_term(term))
969 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
970 if (term->val.num != 1)
972 if (pmu_find_format(&pmu->format, term->config))
975 } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
976 if (strcasecmp(term->config, "event"))
978 name = term->val.str;
983 list_for_each_entry(alias, &pmu->aliases, list) {
984 if (!strcasecmp(alias->name, name))
991 static int check_info_data(struct perf_pmu_alias *alias,
992 struct perf_pmu_info *info)
995 * Only one term in event definition can
996 * define unit, scale and snapshot, fail
997 * if there's more than one.
999 if ((info->unit && alias->unit[0]) ||
1000 (info->scale && alias->scale) ||
1001 (info->snapshot && alias->snapshot))
1005 info->unit = alias->unit;
1008 info->scale = alias->scale;
1010 if (alias->snapshot)
1011 info->snapshot = alias->snapshot;
1017 * Find alias in the terms list and replace it with the terms
1018 * defined for the alias
1020 int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
1021 struct perf_pmu_info *info)
1023 struct parse_events_term *term, *h;
1024 struct perf_pmu_alias *alias;
1027 info->per_pkg = false;
1030 * Mark unit and scale as not set
1031 * (different from default values, see below)
1035 info->snapshot = false;
1036 info->metric_expr = NULL;
1037 info->metric_name = NULL;
1039 list_for_each_entry_safe(term, h, head_terms, list) {
1040 alias = pmu_find_alias(pmu, term);
1043 ret = pmu_alias_terms(alias, &term->list);
1047 ret = check_info_data(alias, info);
1052 info->per_pkg = true;
1053 info->metric_expr = alias->metric_expr;
1054 info->metric_name = alias->metric_name;
1056 list_del(&term->list);
1061 * if no unit or scale foundin aliases, then
1062 * set defaults as for evsel
1063 * unit cannot left to NULL
1065 if (info->unit == NULL)
1068 if (info->scale == 0.0)
1074 int perf_pmu__new_format(struct list_head *list, char *name,
1075 int config, unsigned long *bits)
1077 struct perf_pmu_format *format;
1079 format = zalloc(sizeof(*format));
1083 format->name = strdup(name);
1084 format->value = config;
1085 memcpy(format->bits, bits, sizeof(format->bits));
1087 list_add_tail(&format->list, list);
1091 void perf_pmu__set_format(unsigned long *bits, long from, long to)
1098 memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS));
1099 for (b = from; b <= to; b++)
1103 void perf_pmu__del_formats(struct list_head *formats)
1105 struct perf_pmu_format *fmt, *tmp;
1107 list_for_each_entry_safe(fmt, tmp, formats, list) {
1108 list_del(&fmt->list);
1114 static int sub_non_neg(int a, int b)
1121 static char *format_alias(char *buf, int len, struct perf_pmu *pmu,
1122 struct perf_pmu_alias *alias)
1124 struct parse_events_term *term;
1125 int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name);
1127 list_for_each_entry(term, &alias->terms, list) {
1128 if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
1129 used += snprintf(buf + used, sub_non_neg(len, used),
1130 ",%s=%s", term->config,
1134 if (sub_non_neg(len, used) > 0) {
1138 if (sub_non_neg(len, used) > 0) {
1142 buf[len - 1] = '\0';
1147 static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
1148 struct perf_pmu_alias *alias)
1150 snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name);
1164 static int cmp_sevent(const void *a, const void *b)
1166 const struct sevent *as = a;
1167 const struct sevent *bs = b;
1169 /* Put extra events last */
1170 if (!!as->desc != !!bs->desc)
1171 return !!as->desc - !!bs->desc;
1172 if (as->topic && bs->topic) {
1173 int n = strcmp(as->topic, bs->topic);
1178 return strcmp(as->name, bs->name);
1181 static void wordwrap(char *s, int start, int max, int corr)
1187 int wlen = strcspn(s, " \t");
1189 if (column + wlen >= max && column > start) {
1190 printf("\n%*s", start, "");
1191 column = start + corr;
1193 n = printf("%s%.*s", column > start ? " " : "", wlen, s);
1202 void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
1203 bool long_desc, bool details_flag)
1205 struct perf_pmu *pmu;
1206 struct perf_pmu_alias *alias;
1210 struct sevent *aliases;
1212 int columns = pager_get_columns();
1217 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1218 list_for_each_entry(alias, &pmu->aliases, list)
1220 if (pmu->selectable)
1223 aliases = zalloc(sizeof(struct sevent) * len);
1228 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1229 list_for_each_entry(alias, &pmu->aliases, list) {
1230 char *name = alias->desc ? alias->name :
1231 format_alias(buf, sizeof(buf), pmu, alias);
1232 bool is_cpu = !strcmp(pmu->name, "cpu");
1234 if (event_glob != NULL &&
1235 !(strglobmatch_nocase(name, event_glob) ||
1236 (!is_cpu && strglobmatch_nocase(alias->name,
1239 strglobmatch_nocase(alias->topic, event_glob))))
1242 if (is_cpu && !name_only && !alias->desc)
1243 name = format_alias_or(buf, sizeof(buf), pmu, alias);
1245 aliases[j].name = name;
1246 if (is_cpu && !name_only && !alias->desc)
1247 aliases[j].name = format_alias_or(buf,
1250 aliases[j].name = strdup(aliases[j].name);
1251 if (!aliases[j].name)
1254 aliases[j].desc = long_desc ? alias->long_desc :
1256 aliases[j].topic = alias->topic;
1257 aliases[j].str = alias->str;
1258 aliases[j].pmu = pmu->name;
1259 aliases[j].metric_expr = alias->metric_expr;
1260 aliases[j].metric_name = alias->metric_name;
1263 if (pmu->selectable &&
1264 (event_glob == NULL || strglobmatch(pmu->name, event_glob))) {
1266 if (asprintf(&s, "%s//", pmu->name) < 0)
1268 aliases[j].name = s;
1273 qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
1274 for (j = 0; j < len; j++) {
1275 /* Skip duplicates */
1276 if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name))
1279 printf("%s ", aliases[j].name);
1282 if (aliases[j].desc && !quiet_flag) {
1285 if (aliases[j].topic && (!topic ||
1286 strcmp(topic, aliases[j].topic))) {
1287 printf("%s%s:\n", topic ? "\n" : "",
1289 topic = aliases[j].topic;
1291 printf(" %-50s\n", aliases[j].name);
1292 printf("%*s", 8, "[");
1293 wordwrap(aliases[j].desc, 8, columns, 0);
1296 printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str);
1297 if (aliases[j].metric_name)
1298 printf(" MetricName: %s", aliases[j].metric_name);
1299 if (aliases[j].metric_expr)
1300 printf(" MetricExpr: %s", aliases[j].metric_expr);
1304 printf(" %-50s [Kernel PMU event]\n", aliases[j].name);
1307 if (printed && pager_in_use())
1310 for (j = 0; j < len; j++)
1311 zfree(&aliases[j].name);
1316 printf("FATAL: not enough memory to print PMU events\n");
1321 bool pmu_have_event(const char *pname, const char *name)
1323 struct perf_pmu *pmu;
1324 struct perf_pmu_alias *alias;
1327 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1328 if (strcmp(pname, pmu->name))
1330 list_for_each_entry(alias, &pmu->aliases, list)
1331 if (!strcmp(alias->name, name))
1337 static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name)
1340 char path[PATH_MAX];
1343 sysfs = sysfs__mountpoint();
1347 snprintf(path, PATH_MAX,
1348 "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name);
1350 if (stat(path, &st) < 0)
1353 return fopen(path, "r");
1356 int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt,
1363 va_start(args, fmt);
1364 file = perf_pmu__open_file(pmu, name);
1366 ret = vfscanf(file, fmt, args);