1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/list.h>
3 #include <linux/compiler.h>
13 #include <api/fs/fs.h>
17 #include "parse-events.h"
20 #include "pmu-events/pmu-events.h"
24 struct perf_pmu_format {
27 DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS);
28 struct list_head list;
31 #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
33 int perf_pmu_parse(struct list_head *list, char *name);
34 extern FILE *perf_pmu_in;
36 static LIST_HEAD(pmus);
39 * Parse & process all the sysfs attributes located under
40 * the directory specified in 'dir' parameter.
42 int perf_pmu__format_parse(char *dir, struct list_head *head)
44 struct dirent *evt_ent;
48 format_dir = opendir(dir);
52 while (!ret && (evt_ent = readdir(format_dir))) {
54 char *name = evt_ent->d_name;
57 if (!strcmp(name, ".") || !strcmp(name, ".."))
60 snprintf(path, PATH_MAX, "%s/%s", dir, name);
63 file = fopen(path, "r");
68 ret = perf_pmu_parse(head, name);
77 * Reading/parsing the default pmu format definition, which should be
79 * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes.
81 static int pmu_format(const char *name, struct list_head *format)
85 const char *sysfs = sysfs__mountpoint();
90 snprintf(path, PATH_MAX,
91 "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name);
93 if (stat(path, &st) < 0)
94 return 0; /* no error if format does not exist */
96 if (perf_pmu__format_parse(path, format))
102 static int convert_scale(const char *scale, char **end, double *sval)
108 * save current locale
110 lc = setlocale(LC_NUMERIC, NULL);
113 * The lc string may be allocated in static storage,
114 * so get a dynamic copy to make it survive setlocale
124 * force to C locale to ensure kernel
125 * scale string is converted correctly.
126 * kernel uses default C locale.
128 setlocale(LC_NUMERIC, "C");
130 *sval = strtod(scale, end);
134 setlocale(LC_NUMERIC, lc);
139 static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name)
147 snprintf(path, PATH_MAX, "%s/%s.scale", dir, name);
149 fd = open(path, O_RDONLY);
153 if (fstat(fd, &st) < 0)
156 sret = read(fd, scale, sizeof(scale)-1);
160 if (scale[sret - 1] == '\n')
161 scale[sret - 1] = '\0';
165 ret = convert_scale(scale, NULL, &alias->scale);
171 static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name)
177 snprintf(path, PATH_MAX, "%s/%s.unit", dir, name);
179 fd = open(path, O_RDONLY);
183 sret = read(fd, alias->unit, UNIT_MAX_LEN);
189 if (alias->unit[sret - 1] == '\n')
190 alias->unit[sret - 1] = '\0';
192 alias->unit[sret] = '\0';
197 alias->unit[0] = '\0';
202 perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name)
207 snprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name);
209 fd = open(path, O_RDONLY);
215 alias->per_pkg = true;
219 static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
220 char *dir, char *name)
225 snprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name);
227 fd = open(path, O_RDONLY);
231 alias->snapshot = true;
236 static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
237 char *desc, char *val,
238 char *long_desc, char *topic,
239 char *unit, char *perpkg,
243 struct perf_pmu_alias *alias;
247 alias = malloc(sizeof(*alias));
251 INIT_LIST_HEAD(&alias->terms);
253 alias->unit[0] = '\0';
254 alias->per_pkg = false;
255 alias->snapshot = false;
257 ret = parse_events_terms(&alias->terms, val);
259 pr_err("Cannot parse alias %s: %d\n", val, ret);
264 alias->name = strdup(name);
267 * load unit name and scale if available
269 perf_pmu__parse_unit(alias, dir, name);
270 perf_pmu__parse_scale(alias, dir, name);
271 perf_pmu__parse_per_pkg(alias, dir, name);
272 perf_pmu__parse_snapshot(alias, dir, name);
275 alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL;
276 alias->metric_name = metric_name ? strdup(metric_name): NULL;
277 alias->desc = desc ? strdup(desc) : NULL;
278 alias->long_desc = long_desc ? strdup(long_desc) :
279 desc ? strdup(desc) : NULL;
280 alias->topic = topic ? strdup(topic) : NULL;
282 if (convert_scale(unit, &unit, &alias->scale) < 0)
284 snprintf(alias->unit, sizeof(alias->unit), "%s", unit);
286 alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1;
287 alias->str = strdup(val);
289 list_add_tail(&alias->list, list);
294 static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file)
299 ret = fread(buf, 1, sizeof(buf), file);
305 return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
309 static inline bool pmu_alias_info_file(char *name)
314 if (len > 5 && !strcmp(name + len - 5, ".unit"))
316 if (len > 6 && !strcmp(name + len - 6, ".scale"))
318 if (len > 8 && !strcmp(name + len - 8, ".per-pkg"))
320 if (len > 9 && !strcmp(name + len - 9, ".snapshot"))
327 * Process all the sysfs attributes located under the directory
328 * specified in 'dir' parameter.
330 static int pmu_aliases_parse(char *dir, struct list_head *head)
332 struct dirent *evt_ent;
335 event_dir = opendir(dir);
339 while ((evt_ent = readdir(event_dir))) {
341 char *name = evt_ent->d_name;
344 if (!strcmp(name, ".") || !strcmp(name, ".."))
348 * skip info files parsed in perf_pmu__new_alias()
350 if (pmu_alias_info_file(name))
353 snprintf(path, PATH_MAX, "%s/%s", dir, name);
355 file = fopen(path, "r");
357 pr_debug("Cannot open %s\n", path);
361 if (perf_pmu__new_alias(head, dir, name, file) < 0)
362 pr_debug("Cannot set up %s\n", name);
371 * Reading the pmu event aliases definition, which should be located at:
372 * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes.
374 static int pmu_aliases(const char *name, struct list_head *head)
378 const char *sysfs = sysfs__mountpoint();
383 snprintf(path, PATH_MAX,
384 "%s/bus/event_source/devices/%s/events", sysfs, name);
386 if (stat(path, &st) < 0)
387 return 0; /* no error if 'events' does not exist */
389 if (pmu_aliases_parse(path, head))
395 static int pmu_alias_terms(struct perf_pmu_alias *alias,
396 struct list_head *terms)
398 struct parse_events_term *term, *cloned;
402 list_for_each_entry(term, &alias->terms, list) {
403 ret = parse_events_term__clone(&cloned, term);
405 parse_events_terms__purge(&list);
409 * Weak terms don't override command line options,
410 * which we don't want for implicit terms in aliases.
413 list_add_tail(&cloned->list, &list);
415 list_splice(&list, terms);
420 * Reading/parsing the default pmu type value, which should be
422 * /sys/bus/event_source/devices/<dev>/type as sysfs attribute.
424 static int pmu_type(const char *name, __u32 *type)
430 const char *sysfs = sysfs__mountpoint();
435 snprintf(path, PATH_MAX,
436 "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name);
438 if (stat(path, &st) < 0)
441 file = fopen(path, "r");
445 if (1 != fscanf(file, "%u", type))
452 /* Add all pmus in sysfs to pmu list: */
453 static void pmu_read_sysfs(void)
458 const char *sysfs = sysfs__mountpoint();
463 snprintf(path, PATH_MAX,
464 "%s" EVENT_SOURCE_DEVICE_PATH, sysfs);
470 while ((dent = readdir(dir))) {
471 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
473 /* add to static LIST_HEAD(pmus): */
474 perf_pmu__find(dent->d_name);
480 static struct cpu_map *__pmu_cpumask(const char *path)
483 struct cpu_map *cpus;
485 file = fopen(path, "r");
489 cpus = cpu_map__read(file);
495 * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64)
496 * may have a "cpus" file.
498 #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask"
499 #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus"
501 static struct cpu_map *pmu_cpumask(const char *name)
504 struct cpu_map *cpus;
505 const char *sysfs = sysfs__mountpoint();
506 const char *templates[] = {
507 CPUS_TEMPLATE_UNCORE,
511 const char **template;
516 for (template = templates; *template; template++) {
517 snprintf(path, PATH_MAX, *template, sysfs, name);
518 cpus = __pmu_cpumask(path);
526 static bool pmu_is_uncore(const char *name)
529 struct cpu_map *cpus;
530 const char *sysfs = sysfs__mountpoint();
532 snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name);
533 cpus = __pmu_cpumask(path);
540 * Return the CPU id as a raw string.
542 * Each architecture should provide a more precise id string that
543 * can be use to match the architecture's "mapfile".
545 char * __weak get_cpuid_str(void)
550 static char *perf_pmu__getcpuid(void)
555 cpuid = getenv("PERF_CPUID");
557 cpuid = strdup(cpuid);
559 cpuid = get_cpuid_str();
564 pr_debug("Using CPUID %s\n", cpuid);
570 struct pmu_events_map *perf_pmu__find_map(void)
572 struct pmu_events_map *map;
573 char *cpuid = perf_pmu__getcpuid();
578 map = &pmu_events_map[i++];
584 if (!strcmp(map->cpuid, cpuid))
592 * From the pmu_events_map, find the table of PMU events that corresponds
593 * to the current running CPU. Then, add all PMU events from that table
596 static void pmu_add_cpu_aliases(struct list_head *head, const char *name)
599 struct pmu_events_map *map;
600 struct pmu_event *pe;
602 map = perf_pmu__find_map();
607 * Found a matching PMU events table. Create aliases
613 pe = &map->table[i++];
615 if (pe->metric_group || pe->metric_name)
620 pname = pe->pmu ? pe->pmu : "cpu";
621 if (strncmp(pname, name, strlen(pname)))
624 /* need type casts to override 'const' */
625 __perf_pmu__new_alias(head, NULL, (char *)pe->name,
626 (char *)pe->desc, (char *)pe->event,
627 (char *)pe->long_desc, (char *)pe->topic,
628 (char *)pe->unit, (char *)pe->perpkg,
629 (char *)pe->metric_expr,
630 (char *)pe->metric_name);
634 struct perf_event_attr * __weak
635 perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
640 static struct perf_pmu *pmu_lookup(const char *name)
642 struct perf_pmu *pmu;
648 * The pmu data we store & need consists of the pmu
649 * type value and format definitions. Load both right
652 if (pmu_format(name, &format))
656 * Check the type first to avoid unnecessary work.
658 if (pmu_type(name, &type))
661 if (pmu_aliases(name, &aliases))
664 pmu_add_cpu_aliases(&aliases, name);
665 pmu = zalloc(sizeof(*pmu));
669 pmu->cpus = pmu_cpumask(name);
671 pmu->is_uncore = pmu_is_uncore(name);
673 INIT_LIST_HEAD(&pmu->format);
674 INIT_LIST_HEAD(&pmu->aliases);
675 list_splice(&format, &pmu->format);
676 list_splice(&aliases, &pmu->aliases);
677 pmu->name = strdup(name);
679 list_add_tail(&pmu->list, &pmus);
681 pmu->default_config = perf_pmu__get_default_config(pmu);
686 static struct perf_pmu *pmu_find(const char *name)
688 struct perf_pmu *pmu;
690 list_for_each_entry(pmu, &pmus, list)
691 if (!strcmp(pmu->name, name))
697 struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu)
700 * pmu iterator: If pmu is NULL, we start at the begin,
701 * otherwise return the next pmu. Returns NULL on end.
705 pmu = list_prepare_entry(pmu, &pmus, list);
707 list_for_each_entry_continue(pmu, &pmus, list)
712 struct perf_pmu *perf_pmu__find(const char *name)
714 struct perf_pmu *pmu;
717 * Once PMU is loaded it stays in the list,
718 * so we keep us from multiple reading/parsing
719 * the pmu format definitions.
721 pmu = pmu_find(name);
725 return pmu_lookup(name);
728 static struct perf_pmu_format *
729 pmu_find_format(struct list_head *formats, const char *name)
731 struct perf_pmu_format *format;
733 list_for_each_entry(format, formats, list)
734 if (!strcmp(format->name, name))
740 __u64 perf_pmu__format_bits(struct list_head *formats, const char *name)
742 struct perf_pmu_format *format = pmu_find_format(formats, name);
749 for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS)
750 bits |= 1ULL << fbit;
756 * Sets value based on the format definition (format parameter)
757 * and unformated value (value parameter).
759 static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v,
762 unsigned long fbit, vbit;
764 for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) {
766 if (!test_bit(fbit, format))
769 if (value & (1llu << vbit++))
770 *v |= (1llu << fbit);
772 *v &= ~(1llu << fbit);
776 static __u64 pmu_format_max_value(const unsigned long *format)
781 for_each_set_bit(fbit, format, PERF_PMU_FORMAT_BITS)
788 * Term is a string term, and might be a param-term. Try to look up it's value
789 * in the remaining terms.
790 * - We have a term like "base-or-format-term=param-term",
791 * - We need to find the value supplied for "param-term" (with param-term named
792 * in a config string) later on in the term list.
794 static int pmu_resolve_param_term(struct parse_events_term *term,
795 struct list_head *head_terms,
798 struct parse_events_term *t;
800 list_for_each_entry(t, head_terms, list) {
801 if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
802 if (!strcmp(t->config, term->config)) {
811 printf("Required parameter '%s' not specified\n", term->config);
816 static char *pmu_formats_string(struct list_head *formats)
818 struct perf_pmu_format *format;
820 struct strbuf buf = STRBUF_INIT;
826 /* sysfs exported terms */
827 list_for_each_entry(format, formats, list)
828 if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0)
831 str = strbuf_detach(&buf, NULL);
833 strbuf_release(&buf);
839 * Setup one of config[12] attr members based on the
840 * user input data - term parameter.
842 static int pmu_config_term(struct list_head *formats,
843 struct perf_event_attr *attr,
844 struct parse_events_term *term,
845 struct list_head *head_terms,
846 bool zero, struct parse_events_error *err)
848 struct perf_pmu_format *format;
853 * If this is a parameter we've already used for parameterized-eval,
854 * skip it in normal eval.
860 * Hardcoded terms should be already in, so nothing
861 * to be done for them.
863 if (parse_events__is_hardcoded_term(term))
866 format = pmu_find_format(formats, term->config);
869 printf("Invalid event/parameter '%s'\n", term->config);
871 char *pmu_term = pmu_formats_string(formats);
873 err->idx = term->err_term;
874 err->str = strdup("unknown term");
875 err->help = parse_events_formats_error_string(pmu_term);
881 switch (format->value) {
882 case PERF_PMU_FORMAT_VALUE_CONFIG:
885 case PERF_PMU_FORMAT_VALUE_CONFIG1:
888 case PERF_PMU_FORMAT_VALUE_CONFIG2:
896 * Either directly use a numeric term, or try to translate string terms
897 * using event parameters.
899 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
900 if (term->no_value &&
901 bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) {
903 err->idx = term->err_val;
904 err->str = strdup("no value assigned for term");
910 } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
911 if (strcmp(term->val.str, "?")) {
913 pr_info("Invalid sysfs entry %s=%s\n",
914 term->config, term->val.str);
917 err->idx = term->err_val;
918 err->str = strdup("expected numeric value");
923 if (pmu_resolve_param_term(term, head_terms, &val))
928 max_val = pmu_format_max_value(format->bits);
931 err->idx = term->err_val;
932 if (asprintf(&err->str,
933 "value too big for format, maximum is %llu",
934 (unsigned long long)max_val) < 0)
935 err->str = strdup("value too big for format");
939 * Assume we don't care if !err, in which case the value will be
940 * silently truncated.
944 pmu_format_value(format->bits, val, vp, zero);
948 int perf_pmu__config_terms(struct list_head *formats,
949 struct perf_event_attr *attr,
950 struct list_head *head_terms,
951 bool zero, struct parse_events_error *err)
953 struct parse_events_term *term;
955 list_for_each_entry(term, head_terms, list) {
956 if (pmu_config_term(formats, attr, term, head_terms,
965 * Configures event's 'attr' parameter based on the:
966 * 1) users input - specified in terms parameter
967 * 2) pmu format definitions - specified by pmu parameter
969 int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
970 struct list_head *head_terms,
971 struct parse_events_error *err)
973 bool zero = !!pmu->default_config;
975 attr->type = pmu->type;
976 return perf_pmu__config_terms(&pmu->format, attr, head_terms,
980 static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu,
981 struct parse_events_term *term)
983 struct perf_pmu_alias *alias;
986 if (parse_events__is_hardcoded_term(term))
989 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
990 if (term->val.num != 1)
992 if (pmu_find_format(&pmu->format, term->config))
995 } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
996 if (strcasecmp(term->config, "event"))
998 name = term->val.str;
1003 list_for_each_entry(alias, &pmu->aliases, list) {
1004 if (!strcasecmp(alias->name, name))
1011 static int check_info_data(struct perf_pmu_alias *alias,
1012 struct perf_pmu_info *info)
1015 * Only one term in event definition can
1016 * define unit, scale and snapshot, fail
1017 * if there's more than one.
1019 if ((info->unit && alias->unit[0]) ||
1020 (info->scale && alias->scale) ||
1021 (info->snapshot && alias->snapshot))
1025 info->unit = alias->unit;
1028 info->scale = alias->scale;
1030 if (alias->snapshot)
1031 info->snapshot = alias->snapshot;
1037 * Find alias in the terms list and replace it with the terms
1038 * defined for the alias
1040 int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
1041 struct perf_pmu_info *info)
1043 struct parse_events_term *term, *h;
1044 struct perf_pmu_alias *alias;
1047 info->per_pkg = false;
1050 * Mark unit and scale as not set
1051 * (different from default values, see below)
1055 info->snapshot = false;
1056 info->metric_expr = NULL;
1057 info->metric_name = NULL;
1059 list_for_each_entry_safe(term, h, head_terms, list) {
1060 alias = pmu_find_alias(pmu, term);
1063 ret = pmu_alias_terms(alias, &term->list);
1067 ret = check_info_data(alias, info);
1072 info->per_pkg = true;
1073 info->metric_expr = alias->metric_expr;
1074 info->metric_name = alias->metric_name;
1076 list_del(&term->list);
1081 * if no unit or scale foundin aliases, then
1082 * set defaults as for evsel
1083 * unit cannot left to NULL
1085 if (info->unit == NULL)
1088 if (info->scale == 0.0)
1094 int perf_pmu__new_format(struct list_head *list, char *name,
1095 int config, unsigned long *bits)
1097 struct perf_pmu_format *format;
1099 format = zalloc(sizeof(*format));
1103 format->name = strdup(name);
1104 format->value = config;
1105 memcpy(format->bits, bits, sizeof(format->bits));
1107 list_add_tail(&format->list, list);
1111 void perf_pmu__set_format(unsigned long *bits, long from, long to)
1118 memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS));
1119 for (b = from; b <= to; b++)
1123 static int sub_non_neg(int a, int b)
1130 static char *format_alias(char *buf, int len, struct perf_pmu *pmu,
1131 struct perf_pmu_alias *alias)
1133 struct parse_events_term *term;
1134 int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name);
1136 list_for_each_entry(term, &alias->terms, list) {
1137 if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
1138 used += snprintf(buf + used, sub_non_neg(len, used),
1139 ",%s=%s", term->config,
1143 if (sub_non_neg(len, used) > 0) {
1147 if (sub_non_neg(len, used) > 0) {
1151 buf[len - 1] = '\0';
1156 static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
1157 struct perf_pmu_alias *alias)
1159 snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name);
1173 static int cmp_sevent(const void *a, const void *b)
1175 const struct sevent *as = a;
1176 const struct sevent *bs = b;
1178 /* Put extra events last */
1179 if (!!as->desc != !!bs->desc)
1180 return !!as->desc - !!bs->desc;
1181 if (as->topic && bs->topic) {
1182 int n = strcmp(as->topic, bs->topic);
1187 return strcmp(as->name, bs->name);
1190 static void wordwrap(char *s, int start, int max, int corr)
1196 int wlen = strcspn(s, " \t");
1198 if (column + wlen >= max && column > start) {
1199 printf("\n%*s", start, "");
1200 column = start + corr;
1202 n = printf("%s%.*s", column > start ? " " : "", wlen, s);
1211 void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
1212 bool long_desc, bool details_flag)
1214 struct perf_pmu *pmu;
1215 struct perf_pmu_alias *alias;
1219 struct sevent *aliases;
1221 int columns = pager_get_columns();
1226 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1227 list_for_each_entry(alias, &pmu->aliases, list)
1229 if (pmu->selectable)
1232 aliases = zalloc(sizeof(struct sevent) * len);
1237 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1238 list_for_each_entry(alias, &pmu->aliases, list) {
1239 char *name = alias->desc ? alias->name :
1240 format_alias(buf, sizeof(buf), pmu, alias);
1241 bool is_cpu = !strcmp(pmu->name, "cpu");
1243 if (event_glob != NULL &&
1244 !(strglobmatch_nocase(name, event_glob) ||
1245 (!is_cpu && strglobmatch_nocase(alias->name,
1248 strglobmatch_nocase(alias->topic, event_glob))))
1251 if (is_cpu && !name_only && !alias->desc)
1252 name = format_alias_or(buf, sizeof(buf), pmu, alias);
1254 aliases[j].name = name;
1255 if (is_cpu && !name_only && !alias->desc)
1256 aliases[j].name = format_alias_or(buf,
1259 aliases[j].name = strdup(aliases[j].name);
1260 if (!aliases[j].name)
1263 aliases[j].desc = long_desc ? alias->long_desc :
1265 aliases[j].topic = alias->topic;
1266 aliases[j].str = alias->str;
1267 aliases[j].pmu = pmu->name;
1268 aliases[j].metric_expr = alias->metric_expr;
1269 aliases[j].metric_name = alias->metric_name;
1272 if (pmu->selectable &&
1273 (event_glob == NULL || strglobmatch(pmu->name, event_glob))) {
1275 if (asprintf(&s, "%s//", pmu->name) < 0)
1277 aliases[j].name = s;
1282 qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
1283 for (j = 0; j < len; j++) {
1284 /* Skip duplicates */
1285 if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name))
1288 printf("%s ", aliases[j].name);
1291 if (aliases[j].desc && !quiet_flag) {
1294 if (aliases[j].topic && (!topic ||
1295 strcmp(topic, aliases[j].topic))) {
1296 printf("%s%s:\n", topic ? "\n" : "",
1298 topic = aliases[j].topic;
1300 printf(" %-50s\n", aliases[j].name);
1301 printf("%*s", 8, "[");
1302 wordwrap(aliases[j].desc, 8, columns, 0);
1305 printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str);
1306 if (aliases[j].metric_name)
1307 printf(" MetricName: %s", aliases[j].metric_name);
1308 if (aliases[j].metric_expr)
1309 printf(" MetricExpr: %s", aliases[j].metric_expr);
1313 printf(" %-50s [Kernel PMU event]\n", aliases[j].name);
1316 if (printed && pager_in_use())
1319 for (j = 0; j < len; j++)
1320 zfree(&aliases[j].name);
1325 printf("FATAL: not enough memory to print PMU events\n");
1330 bool pmu_have_event(const char *pname, const char *name)
1332 struct perf_pmu *pmu;
1333 struct perf_pmu_alias *alias;
1336 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1337 if (strcmp(pname, pmu->name))
1339 list_for_each_entry(alias, &pmu->aliases, list)
1340 if (!strcmp(alias->name, name))
1346 static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name)
1349 char path[PATH_MAX];
1352 sysfs = sysfs__mountpoint();
1356 snprintf(path, PATH_MAX,
1357 "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name);
1359 if (stat(path, &st) < 0)
1362 return fopen(path, "r");
1365 int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt,
1372 va_start(args, fmt);
1373 file = perf_pmu__open_file(pmu, name);
1375 ret = vfscanf(file, fmt, args);