1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/list.h>
3 #include <linux/compiler.h>
13 #include <api/fs/fs.h>
18 #include "parse-events.h"
21 #include "pmu-events/pmu-events.h"
25 struct perf_pmu_format {
28 DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS);
29 struct list_head list;
32 #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
34 int perf_pmu_parse(struct list_head *list, char *name);
35 extern FILE *perf_pmu_in;
37 static LIST_HEAD(pmus);
40 * Parse & process all the sysfs attributes located under
41 * the directory specified in 'dir' parameter.
43 int perf_pmu__format_parse(char *dir, struct list_head *head)
45 struct dirent *evt_ent;
49 format_dir = opendir(dir);
53 while (!ret && (evt_ent = readdir(format_dir))) {
55 char *name = evt_ent->d_name;
58 if (!strcmp(name, ".") || !strcmp(name, ".."))
61 snprintf(path, PATH_MAX, "%s/%s", dir, name);
64 file = fopen(path, "r");
69 ret = perf_pmu_parse(head, name);
78 * Reading/parsing the default pmu format definition, which should be
80 * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes.
82 static int pmu_format(const char *name, struct list_head *format)
86 const char *sysfs = sysfs__mountpoint();
91 snprintf(path, PATH_MAX,
92 "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name);
94 if (stat(path, &st) < 0)
95 return 0; /* no error if format does not exist */
97 if (perf_pmu__format_parse(path, format))
103 static int convert_scale(const char *scale, char **end, double *sval)
109 * save current locale
111 lc = setlocale(LC_NUMERIC, NULL);
114 * The lc string may be allocated in static storage,
115 * so get a dynamic copy to make it survive setlocale
125 * force to C locale to ensure kernel
126 * scale string is converted correctly.
127 * kernel uses default C locale.
129 setlocale(LC_NUMERIC, "C");
131 *sval = strtod(scale, end);
135 setlocale(LC_NUMERIC, lc);
140 static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name)
148 snprintf(path, PATH_MAX, "%s/%s.scale", dir, name);
150 fd = open(path, O_RDONLY);
154 if (fstat(fd, &st) < 0)
157 sret = read(fd, scale, sizeof(scale)-1);
161 if (scale[sret - 1] == '\n')
162 scale[sret - 1] = '\0';
166 ret = convert_scale(scale, NULL, &alias->scale);
172 static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name)
178 snprintf(path, PATH_MAX, "%s/%s.unit", dir, name);
180 fd = open(path, O_RDONLY);
184 sret = read(fd, alias->unit, UNIT_MAX_LEN);
190 if (alias->unit[sret - 1] == '\n')
191 alias->unit[sret - 1] = '\0';
193 alias->unit[sret] = '\0';
198 alias->unit[0] = '\0';
203 perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name)
208 snprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name);
210 fd = open(path, O_RDONLY);
216 alias->per_pkg = true;
220 static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
221 char *dir, char *name)
226 snprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name);
228 fd = open(path, O_RDONLY);
232 alias->snapshot = true;
237 static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
238 char *desc, char *val,
239 char *long_desc, char *topic,
240 char *unit, char *perpkg,
244 struct perf_pmu_alias *alias;
248 alias = malloc(sizeof(*alias));
252 INIT_LIST_HEAD(&alias->terms);
254 alias->unit[0] = '\0';
255 alias->per_pkg = false;
256 alias->snapshot = false;
258 ret = parse_events_terms(&alias->terms, val);
260 pr_err("Cannot parse alias %s: %d\n", val, ret);
265 alias->name = strdup(name);
268 * load unit name and scale if available
270 perf_pmu__parse_unit(alias, dir, name);
271 perf_pmu__parse_scale(alias, dir, name);
272 perf_pmu__parse_per_pkg(alias, dir, name);
273 perf_pmu__parse_snapshot(alias, dir, name);
276 alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL;
277 alias->metric_name = metric_name ? strdup(metric_name): NULL;
278 alias->desc = desc ? strdup(desc) : NULL;
279 alias->long_desc = long_desc ? strdup(long_desc) :
280 desc ? strdup(desc) : NULL;
281 alias->topic = topic ? strdup(topic) : NULL;
283 if (convert_scale(unit, &unit, &alias->scale) < 0)
285 snprintf(alias->unit, sizeof(alias->unit), "%s", unit);
287 alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1;
288 alias->str = strdup(val);
290 list_add_tail(&alias->list, list);
295 static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file)
300 ret = fread(buf, 1, sizeof(buf), file);
306 return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
310 static inline bool pmu_alias_info_file(char *name)
315 if (len > 5 && !strcmp(name + len - 5, ".unit"))
317 if (len > 6 && !strcmp(name + len - 6, ".scale"))
319 if (len > 8 && !strcmp(name + len - 8, ".per-pkg"))
321 if (len > 9 && !strcmp(name + len - 9, ".snapshot"))
328 * Process all the sysfs attributes located under the directory
329 * specified in 'dir' parameter.
331 static int pmu_aliases_parse(char *dir, struct list_head *head)
333 struct dirent *evt_ent;
336 event_dir = opendir(dir);
340 while ((evt_ent = readdir(event_dir))) {
342 char *name = evt_ent->d_name;
345 if (!strcmp(name, ".") || !strcmp(name, ".."))
349 * skip info files parsed in perf_pmu__new_alias()
351 if (pmu_alias_info_file(name))
354 scnprintf(path, PATH_MAX, "%s/%s", dir, name);
356 file = fopen(path, "r");
358 pr_debug("Cannot open %s\n", path);
362 if (perf_pmu__new_alias(head, dir, name, file) < 0)
363 pr_debug("Cannot set up %s\n", name);
372 * Reading the pmu event aliases definition, which should be located at:
373 * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes.
375 static int pmu_aliases(const char *name, struct list_head *head)
379 const char *sysfs = sysfs__mountpoint();
384 snprintf(path, PATH_MAX,
385 "%s/bus/event_source/devices/%s/events", sysfs, name);
387 if (stat(path, &st) < 0)
388 return 0; /* no error if 'events' does not exist */
390 if (pmu_aliases_parse(path, head))
396 static int pmu_alias_terms(struct perf_pmu_alias *alias,
397 struct list_head *terms)
399 struct parse_events_term *term, *cloned;
403 list_for_each_entry(term, &alias->terms, list) {
404 ret = parse_events_term__clone(&cloned, term);
406 parse_events_terms__purge(&list);
410 * Weak terms don't override command line options,
411 * which we don't want for implicit terms in aliases.
414 list_add_tail(&cloned->list, &list);
416 list_splice(&list, terms);
421 * Reading/parsing the default pmu type value, which should be
423 * /sys/bus/event_source/devices/<dev>/type as sysfs attribute.
425 static int pmu_type(const char *name, __u32 *type)
431 const char *sysfs = sysfs__mountpoint();
436 snprintf(path, PATH_MAX,
437 "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name);
439 if (stat(path, &st) < 0)
442 file = fopen(path, "r");
446 if (1 != fscanf(file, "%u", type))
453 /* Add all pmus in sysfs to pmu list: */
454 static void pmu_read_sysfs(void)
459 const char *sysfs = sysfs__mountpoint();
464 snprintf(path, PATH_MAX,
465 "%s" EVENT_SOURCE_DEVICE_PATH, sysfs);
471 while ((dent = readdir(dir))) {
472 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
474 /* add to static LIST_HEAD(pmus): */
475 perf_pmu__find(dent->d_name);
481 static struct cpu_map *__pmu_cpumask(const char *path)
484 struct cpu_map *cpus;
486 file = fopen(path, "r");
490 cpus = cpu_map__read(file);
496 * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64)
497 * may have a "cpus" file.
499 #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask"
500 #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus"
502 static struct cpu_map *pmu_cpumask(const char *name)
505 struct cpu_map *cpus;
506 const char *sysfs = sysfs__mountpoint();
507 const char *templates[] = {
508 CPUS_TEMPLATE_UNCORE,
512 const char **template;
517 for (template = templates; *template; template++) {
518 snprintf(path, PATH_MAX, *template, sysfs, name);
519 cpus = __pmu_cpumask(path);
527 static bool pmu_is_uncore(const char *name)
530 struct cpu_map *cpus;
531 const char *sysfs = sysfs__mountpoint();
533 snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name);
534 cpus = __pmu_cpumask(path);
541 * PMU CORE devices have different name other than cpu in sysfs on some
543 * Looking for possible sysfs files to identify the arm core device.
545 static int is_arm_pmu_core(const char *name)
549 const char *sysfs = sysfs__mountpoint();
554 /* Look for cpu sysfs (specific to arm) */
555 scnprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/cpus",
557 if (stat(path, &st) == 0)
560 /* Look for cpu sysfs (specific to s390) */
561 scnprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s",
563 if (stat(path, &st) == 0 && !strncmp(name, "cpum_", 5))
570 * Return the CPU id as a raw string.
572 * Each architecture should provide a more precise id string that
573 * can be use to match the architecture's "mapfile".
575 char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
580 /* Return zero when the cpuid from the mapfile.csv matches the
581 * cpuid string generated on this platform.
582 * Otherwise return non-zero.
584 int strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
587 regmatch_t pmatch[1];
590 if (regcomp(&re, mapcpuid, REG_EXTENDED) != 0) {
591 /* Warn unable to generate match particular string. */
592 pr_info("Invalid regular expression %s\n", mapcpuid);
596 match = !regexec(&re, cpuid, 1, pmatch, 0);
599 size_t match_len = (pmatch[0].rm_eo - pmatch[0].rm_so);
601 /* Verify the entire string matched. */
602 if (match_len == strlen(cpuid))
608 static char *perf_pmu__getcpuid(struct perf_pmu *pmu)
613 cpuid = getenv("PERF_CPUID");
615 cpuid = strdup(cpuid);
617 cpuid = get_cpuid_str(pmu);
622 pr_debug("Using CPUID %s\n", cpuid);
628 struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu)
630 struct pmu_events_map *map;
631 char *cpuid = perf_pmu__getcpuid(pmu);
634 /* on some platforms which uses cpus map, cpuid can be NULL for
635 * PMUs other than CORE PMUs.
642 map = &pmu_events_map[i++];
648 if (!strcmp_cpuid_str(map->cpuid, cpuid))
656 * From the pmu_events_map, find the table of PMU events that corresponds
657 * to the current running CPU. Then, add all PMU events from that table
660 static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
663 struct pmu_events_map *map;
664 struct pmu_event *pe;
665 const char *name = pmu->name;
668 map = perf_pmu__find_map(pmu);
673 * Found a matching PMU events table. Create aliases
678 pe = &map->table[i++];
680 if (pe->metric_group || pe->metric_name)
685 if (!is_arm_pmu_core(name)) {
686 pname = pe->pmu ? pe->pmu : "cpu";
687 if (strncmp(pname, name, strlen(pname)))
691 /* need type casts to override 'const' */
692 __perf_pmu__new_alias(head, NULL, (char *)pe->name,
693 (char *)pe->desc, (char *)pe->event,
694 (char *)pe->long_desc, (char *)pe->topic,
695 (char *)pe->unit, (char *)pe->perpkg,
696 (char *)pe->metric_expr,
697 (char *)pe->metric_name);
701 struct perf_event_attr * __weak
702 perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
707 static struct perf_pmu *pmu_lookup(const char *name)
709 struct perf_pmu *pmu;
715 * The pmu data we store & need consists of the pmu
716 * type value and format definitions. Load both right
719 if (pmu_format(name, &format))
723 * Check the type first to avoid unnecessary work.
725 if (pmu_type(name, &type))
728 if (pmu_aliases(name, &aliases))
731 pmu = zalloc(sizeof(*pmu));
735 pmu->cpus = pmu_cpumask(name);
736 pmu->name = strdup(name);
738 pmu->is_uncore = pmu_is_uncore(name);
739 pmu_add_cpu_aliases(&aliases, pmu);
741 INIT_LIST_HEAD(&pmu->format);
742 INIT_LIST_HEAD(&pmu->aliases);
743 list_splice(&format, &pmu->format);
744 list_splice(&aliases, &pmu->aliases);
745 list_add_tail(&pmu->list, &pmus);
747 pmu->default_config = perf_pmu__get_default_config(pmu);
752 static struct perf_pmu *pmu_find(const char *name)
754 struct perf_pmu *pmu;
756 list_for_each_entry(pmu, &pmus, list)
757 if (!strcmp(pmu->name, name))
763 struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu)
766 * pmu iterator: If pmu is NULL, we start at the begin,
767 * otherwise return the next pmu. Returns NULL on end.
771 pmu = list_prepare_entry(pmu, &pmus, list);
773 list_for_each_entry_continue(pmu, &pmus, list)
778 struct perf_pmu *perf_pmu__find(const char *name)
780 struct perf_pmu *pmu;
783 * Once PMU is loaded it stays in the list,
784 * so we keep us from multiple reading/parsing
785 * the pmu format definitions.
787 pmu = pmu_find(name);
791 return pmu_lookup(name);
794 static struct perf_pmu_format *
795 pmu_find_format(struct list_head *formats, const char *name)
797 struct perf_pmu_format *format;
799 list_for_each_entry(format, formats, list)
800 if (!strcmp(format->name, name))
806 __u64 perf_pmu__format_bits(struct list_head *formats, const char *name)
808 struct perf_pmu_format *format = pmu_find_format(formats, name);
815 for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS)
816 bits |= 1ULL << fbit;
822 * Sets value based on the format definition (format parameter)
823 * and unformated value (value parameter).
825 static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v,
828 unsigned long fbit, vbit;
830 for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) {
832 if (!test_bit(fbit, format))
835 if (value & (1llu << vbit++))
836 *v |= (1llu << fbit);
838 *v &= ~(1llu << fbit);
842 static __u64 pmu_format_max_value(const unsigned long *format)
847 for_each_set_bit(fbit, format, PERF_PMU_FORMAT_BITS)
854 * Term is a string term, and might be a param-term. Try to look up it's value
855 * in the remaining terms.
856 * - We have a term like "base-or-format-term=param-term",
857 * - We need to find the value supplied for "param-term" (with param-term named
858 * in a config string) later on in the term list.
860 static int pmu_resolve_param_term(struct parse_events_term *term,
861 struct list_head *head_terms,
864 struct parse_events_term *t;
866 list_for_each_entry(t, head_terms, list) {
867 if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
868 if (!strcmp(t->config, term->config)) {
877 printf("Required parameter '%s' not specified\n", term->config);
882 static char *pmu_formats_string(struct list_head *formats)
884 struct perf_pmu_format *format;
886 struct strbuf buf = STRBUF_INIT;
892 /* sysfs exported terms */
893 list_for_each_entry(format, formats, list)
894 if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0)
897 str = strbuf_detach(&buf, NULL);
899 strbuf_release(&buf);
905 * Setup one of config[12] attr members based on the
906 * user input data - term parameter.
908 static int pmu_config_term(struct list_head *formats,
909 struct perf_event_attr *attr,
910 struct parse_events_term *term,
911 struct list_head *head_terms,
912 bool zero, struct parse_events_error *err)
914 struct perf_pmu_format *format;
919 * If this is a parameter we've already used for parameterized-eval,
920 * skip it in normal eval.
926 * Hardcoded terms should be already in, so nothing
927 * to be done for them.
929 if (parse_events__is_hardcoded_term(term))
932 format = pmu_find_format(formats, term->config);
935 printf("Invalid event/parameter '%s'\n", term->config);
937 char *pmu_term = pmu_formats_string(formats);
939 err->idx = term->err_term;
940 err->str = strdup("unknown term");
941 err->help = parse_events_formats_error_string(pmu_term);
947 switch (format->value) {
948 case PERF_PMU_FORMAT_VALUE_CONFIG:
951 case PERF_PMU_FORMAT_VALUE_CONFIG1:
954 case PERF_PMU_FORMAT_VALUE_CONFIG2:
962 * Either directly use a numeric term, or try to translate string terms
963 * using event parameters.
965 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
966 if (term->no_value &&
967 bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) {
969 err->idx = term->err_val;
970 err->str = strdup("no value assigned for term");
976 } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
977 if (strcmp(term->val.str, "?")) {
979 pr_info("Invalid sysfs entry %s=%s\n",
980 term->config, term->val.str);
983 err->idx = term->err_val;
984 err->str = strdup("expected numeric value");
989 if (pmu_resolve_param_term(term, head_terms, &val))
994 max_val = pmu_format_max_value(format->bits);
997 err->idx = term->err_val;
998 if (asprintf(&err->str,
999 "value too big for format, maximum is %llu",
1000 (unsigned long long)max_val) < 0)
1001 err->str = strdup("value too big for format");
1005 * Assume we don't care if !err, in which case the value will be
1006 * silently truncated.
1010 pmu_format_value(format->bits, val, vp, zero);
1014 int perf_pmu__config_terms(struct list_head *formats,
1015 struct perf_event_attr *attr,
1016 struct list_head *head_terms,
1017 bool zero, struct parse_events_error *err)
1019 struct parse_events_term *term;
1021 list_for_each_entry(term, head_terms, list) {
1022 if (pmu_config_term(formats, attr, term, head_terms,
1031 * Configures event's 'attr' parameter based on the:
1032 * 1) users input - specified in terms parameter
1033 * 2) pmu format definitions - specified by pmu parameter
1035 int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
1036 struct list_head *head_terms,
1037 struct parse_events_error *err)
1039 bool zero = !!pmu->default_config;
1041 attr->type = pmu->type;
1042 return perf_pmu__config_terms(&pmu->format, attr, head_terms,
1046 static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu,
1047 struct parse_events_term *term)
1049 struct perf_pmu_alias *alias;
1052 if (parse_events__is_hardcoded_term(term))
1055 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
1056 if (term->val.num != 1)
1058 if (pmu_find_format(&pmu->format, term->config))
1060 name = term->config;
1061 } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
1062 if (strcasecmp(term->config, "event"))
1064 name = term->val.str;
1069 list_for_each_entry(alias, &pmu->aliases, list) {
1070 if (!strcasecmp(alias->name, name))
1077 static int check_info_data(struct perf_pmu_alias *alias,
1078 struct perf_pmu_info *info)
1081 * Only one term in event definition can
1082 * define unit, scale and snapshot, fail
1083 * if there's more than one.
1085 if ((info->unit && alias->unit[0]) ||
1086 (info->scale && alias->scale) ||
1087 (info->snapshot && alias->snapshot))
1091 info->unit = alias->unit;
1094 info->scale = alias->scale;
1096 if (alias->snapshot)
1097 info->snapshot = alias->snapshot;
1103 * Find alias in the terms list and replace it with the terms
1104 * defined for the alias
1106 int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
1107 struct perf_pmu_info *info)
1109 struct parse_events_term *term, *h;
1110 struct perf_pmu_alias *alias;
1113 info->per_pkg = false;
1116 * Mark unit and scale as not set
1117 * (different from default values, see below)
1121 info->snapshot = false;
1122 info->metric_expr = NULL;
1123 info->metric_name = NULL;
1125 list_for_each_entry_safe(term, h, head_terms, list) {
1126 alias = pmu_find_alias(pmu, term);
1129 ret = pmu_alias_terms(alias, &term->list);
1133 ret = check_info_data(alias, info);
1138 info->per_pkg = true;
1139 info->metric_expr = alias->metric_expr;
1140 info->metric_name = alias->metric_name;
1142 list_del(&term->list);
1147 * if no unit or scale foundin aliases, then
1148 * set defaults as for evsel
1149 * unit cannot left to NULL
1151 if (info->unit == NULL)
1154 if (info->scale == 0.0)
1160 int perf_pmu__new_format(struct list_head *list, char *name,
1161 int config, unsigned long *bits)
1163 struct perf_pmu_format *format;
1165 format = zalloc(sizeof(*format));
1169 format->name = strdup(name);
1170 format->value = config;
1171 memcpy(format->bits, bits, sizeof(format->bits));
1173 list_add_tail(&format->list, list);
1177 void perf_pmu__set_format(unsigned long *bits, long from, long to)
1184 memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS));
1185 for (b = from; b <= to; b++)
1189 static int sub_non_neg(int a, int b)
1196 static char *format_alias(char *buf, int len, struct perf_pmu *pmu,
1197 struct perf_pmu_alias *alias)
1199 struct parse_events_term *term;
1200 int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name);
1202 list_for_each_entry(term, &alias->terms, list) {
1203 if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
1204 used += snprintf(buf + used, sub_non_neg(len, used),
1205 ",%s=%s", term->config,
1209 if (sub_non_neg(len, used) > 0) {
1213 if (sub_non_neg(len, used) > 0) {
1217 buf[len - 1] = '\0';
1222 static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
1223 struct perf_pmu_alias *alias)
1225 snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name);
1239 static int cmp_sevent(const void *a, const void *b)
1241 const struct sevent *as = a;
1242 const struct sevent *bs = b;
1244 /* Put extra events last */
1245 if (!!as->desc != !!bs->desc)
1246 return !!as->desc - !!bs->desc;
1247 if (as->topic && bs->topic) {
1248 int n = strcmp(as->topic, bs->topic);
1253 return strcmp(as->name, bs->name);
1256 static void wordwrap(char *s, int start, int max, int corr)
1262 int wlen = strcspn(s, " \t");
1264 if (column + wlen >= max && column > start) {
1265 printf("\n%*s", start, "");
1266 column = start + corr;
1268 n = printf("%s%.*s", column > start ? " " : "", wlen, s);
1277 void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
1278 bool long_desc, bool details_flag)
1280 struct perf_pmu *pmu;
1281 struct perf_pmu_alias *alias;
1285 struct sevent *aliases;
1287 int columns = pager_get_columns();
1292 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1293 list_for_each_entry(alias, &pmu->aliases, list)
1295 if (pmu->selectable)
1298 aliases = zalloc(sizeof(struct sevent) * len);
1303 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1304 list_for_each_entry(alias, &pmu->aliases, list) {
1305 char *name = alias->desc ? alias->name :
1306 format_alias(buf, sizeof(buf), pmu, alias);
1307 bool is_cpu = !strcmp(pmu->name, "cpu");
1309 if (event_glob != NULL &&
1310 !(strglobmatch_nocase(name, event_glob) ||
1311 (!is_cpu && strglobmatch_nocase(alias->name,
1314 strglobmatch_nocase(alias->topic, event_glob))))
1317 if (is_cpu && !name_only && !alias->desc)
1318 name = format_alias_or(buf, sizeof(buf), pmu, alias);
1320 aliases[j].name = name;
1321 if (is_cpu && !name_only && !alias->desc)
1322 aliases[j].name = format_alias_or(buf,
1325 aliases[j].name = strdup(aliases[j].name);
1326 if (!aliases[j].name)
1329 aliases[j].desc = long_desc ? alias->long_desc :
1331 aliases[j].topic = alias->topic;
1332 aliases[j].str = alias->str;
1333 aliases[j].pmu = pmu->name;
1334 aliases[j].metric_expr = alias->metric_expr;
1335 aliases[j].metric_name = alias->metric_name;
1338 if (pmu->selectable &&
1339 (event_glob == NULL || strglobmatch(pmu->name, event_glob))) {
1341 if (asprintf(&s, "%s//", pmu->name) < 0)
1343 aliases[j].name = s;
1348 qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
1349 for (j = 0; j < len; j++) {
1350 /* Skip duplicates */
1351 if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name))
1354 printf("%s ", aliases[j].name);
1357 if (aliases[j].desc && !quiet_flag) {
1360 if (aliases[j].topic && (!topic ||
1361 strcmp(topic, aliases[j].topic))) {
1362 printf("%s%s:\n", topic ? "\n" : "",
1364 topic = aliases[j].topic;
1366 printf(" %-50s\n", aliases[j].name);
1367 printf("%*s", 8, "[");
1368 wordwrap(aliases[j].desc, 8, columns, 0);
1371 printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str);
1372 if (aliases[j].metric_name)
1373 printf(" MetricName: %s", aliases[j].metric_name);
1374 if (aliases[j].metric_expr)
1375 printf(" MetricExpr: %s", aliases[j].metric_expr);
1379 printf(" %-50s [Kernel PMU event]\n", aliases[j].name);
1382 if (printed && pager_in_use())
1385 for (j = 0; j < len; j++)
1386 zfree(&aliases[j].name);
1391 printf("FATAL: not enough memory to print PMU events\n");
1396 bool pmu_have_event(const char *pname, const char *name)
1398 struct perf_pmu *pmu;
1399 struct perf_pmu_alias *alias;
1402 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1403 if (strcmp(pname, pmu->name))
1405 list_for_each_entry(alias, &pmu->aliases, list)
1406 if (!strcmp(alias->name, name))
1412 static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name)
1415 char path[PATH_MAX];
1418 sysfs = sysfs__mountpoint();
1422 snprintf(path, PATH_MAX,
1423 "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name);
1425 if (stat(path, &st) < 0)
1428 return fopen(path, "r");
1431 int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt,
1438 va_start(args, fmt);
1439 file = perf_pmu__open_file(pmu, name);
1441 ret = vfscanf(file, fmt, args);