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 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 void perf_pmu_assign_str(char *name, const char *field, char **old_str,
241 if (*new_str) { /* Have new string, check with old */
242 if (strcasecmp(*old_str, *new_str))
243 pr_debug("alias %s differs in field '%s'\n",
246 } else /* Nothing new --> keep old string */
253 static void perf_pmu_update_alias(struct perf_pmu_alias *old,
254 struct perf_pmu_alias *newalias)
256 perf_pmu_assign_str(old->name, "desc", &old->desc, &newalias->desc);
257 perf_pmu_assign_str(old->name, "long_desc", &old->long_desc,
258 &newalias->long_desc);
259 perf_pmu_assign_str(old->name, "topic", &old->topic, &newalias->topic);
260 perf_pmu_assign_str(old->name, "metric_expr", &old->metric_expr,
261 &newalias->metric_expr);
262 perf_pmu_assign_str(old->name, "metric_name", &old->metric_name,
263 &newalias->metric_name);
264 perf_pmu_assign_str(old->name, "value", &old->str, &newalias->str);
265 old->scale = newalias->scale;
266 old->per_pkg = newalias->per_pkg;
267 old->snapshot = newalias->snapshot;
268 memcpy(old->unit, newalias->unit, sizeof(old->unit));
271 /* Delete an alias entry. */
272 static void perf_pmu_free_alias(struct perf_pmu_alias *newalias)
274 zfree(&newalias->name);
275 zfree(&newalias->desc);
276 zfree(&newalias->long_desc);
277 zfree(&newalias->topic);
278 zfree(&newalias->str);
279 zfree(&newalias->metric_expr);
280 zfree(&newalias->metric_name);
281 parse_events_terms__purge(&newalias->terms);
285 /* Merge an alias, search in alias list. If this name is already
286 * present merge both of them to combine all information.
288 static bool perf_pmu_merge_alias(struct perf_pmu_alias *newalias,
289 struct list_head *alist)
291 struct perf_pmu_alias *a;
293 list_for_each_entry(a, alist, list) {
294 if (!strcasecmp(newalias->name, a->name)) {
295 perf_pmu_update_alias(a, newalias);
296 perf_pmu_free_alias(newalias);
303 static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
304 char *desc, char *val,
305 char *long_desc, char *topic,
306 char *unit, char *perpkg,
310 struct parse_events_term *term;
311 struct perf_pmu_alias *alias;
316 alias = malloc(sizeof(*alias));
320 INIT_LIST_HEAD(&alias->terms);
322 alias->unit[0] = '\0';
323 alias->per_pkg = false;
324 alias->snapshot = false;
326 ret = parse_events_terms(&alias->terms, val);
328 pr_err("Cannot parse alias %s: %d\n", val, ret);
333 /* Scan event and remove leading zeroes, spaces, newlines, some
334 * platforms have terms specified as
335 * event=0x0091 (read from files ../<PMU>/events/<FILE>
336 * and terms specified as event=0x91 (read from JSON files).
338 * Rebuild string to make alias->str member comparable.
340 memset(newval, 0, sizeof(newval));
342 list_for_each_entry(term, &alias->terms, list) {
344 ret += scnprintf(newval + ret, sizeof(newval) - ret,
346 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
347 ret += scnprintf(newval + ret, sizeof(newval) - ret,
348 "%s=%#x", term->config, term->val.num);
349 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
350 ret += scnprintf(newval + ret, sizeof(newval) - ret,
351 "%s=%s", term->config, term->val.str);
354 alias->name = strdup(name);
357 * load unit name and scale if available
359 perf_pmu__parse_unit(alias, dir, name);
360 perf_pmu__parse_scale(alias, dir, name);
361 perf_pmu__parse_per_pkg(alias, dir, name);
362 perf_pmu__parse_snapshot(alias, dir, name);
365 alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL;
366 alias->metric_name = metric_name ? strdup(metric_name): NULL;
367 alias->desc = desc ? strdup(desc) : NULL;
368 alias->long_desc = long_desc ? strdup(long_desc) :
369 desc ? strdup(desc) : NULL;
370 alias->topic = topic ? strdup(topic) : NULL;
372 if (convert_scale(unit, &unit, &alias->scale) < 0)
374 snprintf(alias->unit, sizeof(alias->unit), "%s", unit);
376 alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1;
377 alias->str = strdup(newval);
379 if (!perf_pmu_merge_alias(alias, list))
380 list_add_tail(&alias->list, list);
385 static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file)
390 ret = fread(buf, 1, sizeof(buf), file);
396 /* Remove trailing newline from sysfs file */
399 return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
403 static inline bool pmu_alias_info_file(char *name)
408 if (len > 5 && !strcmp(name + len - 5, ".unit"))
410 if (len > 6 && !strcmp(name + len - 6, ".scale"))
412 if (len > 8 && !strcmp(name + len - 8, ".per-pkg"))
414 if (len > 9 && !strcmp(name + len - 9, ".snapshot"))
421 * Process all the sysfs attributes located under the directory
422 * specified in 'dir' parameter.
424 static int pmu_aliases_parse(char *dir, struct list_head *head)
426 struct dirent *evt_ent;
429 event_dir = opendir(dir);
433 while ((evt_ent = readdir(event_dir))) {
435 char *name = evt_ent->d_name;
438 if (!strcmp(name, ".") || !strcmp(name, ".."))
442 * skip info files parsed in perf_pmu__new_alias()
444 if (pmu_alias_info_file(name))
447 scnprintf(path, PATH_MAX, "%s/%s", dir, name);
449 file = fopen(path, "r");
451 pr_debug("Cannot open %s\n", path);
455 if (perf_pmu__new_alias(head, dir, name, file) < 0)
456 pr_debug("Cannot set up %s\n", name);
465 * Reading the pmu event aliases definition, which should be located at:
466 * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes.
468 static int pmu_aliases(const char *name, struct list_head *head)
472 const char *sysfs = sysfs__mountpoint();
477 snprintf(path, PATH_MAX,
478 "%s/bus/event_source/devices/%s/events", sysfs, name);
480 if (stat(path, &st) < 0)
481 return 0; /* no error if 'events' does not exist */
483 if (pmu_aliases_parse(path, head))
489 static int pmu_alias_terms(struct perf_pmu_alias *alias,
490 struct list_head *terms)
492 struct parse_events_term *term, *cloned;
496 list_for_each_entry(term, &alias->terms, list) {
497 ret = parse_events_term__clone(&cloned, term);
499 parse_events_terms__purge(&list);
503 * Weak terms don't override command line options,
504 * which we don't want for implicit terms in aliases.
507 list_add_tail(&cloned->list, &list);
509 list_splice(&list, terms);
514 * Reading/parsing the default pmu type value, which should be
516 * /sys/bus/event_source/devices/<dev>/type as sysfs attribute.
518 static int pmu_type(const char *name, __u32 *type)
524 const char *sysfs = sysfs__mountpoint();
529 snprintf(path, PATH_MAX,
530 "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name);
532 if (stat(path, &st) < 0)
535 file = fopen(path, "r");
539 if (1 != fscanf(file, "%u", type))
546 /* Add all pmus in sysfs to pmu list: */
547 static void pmu_read_sysfs(void)
552 const char *sysfs = sysfs__mountpoint();
557 snprintf(path, PATH_MAX,
558 "%s" EVENT_SOURCE_DEVICE_PATH, sysfs);
564 while ((dent = readdir(dir))) {
565 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
567 /* add to static LIST_HEAD(pmus): */
568 perf_pmu__find(dent->d_name);
574 static struct cpu_map *__pmu_cpumask(const char *path)
577 struct cpu_map *cpus;
579 file = fopen(path, "r");
583 cpus = cpu_map__read(file);
589 * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64)
590 * may have a "cpus" file.
592 #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask"
593 #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus"
595 static struct cpu_map *pmu_cpumask(const char *name)
598 struct cpu_map *cpus;
599 const char *sysfs = sysfs__mountpoint();
600 const char *templates[] = {
601 CPUS_TEMPLATE_UNCORE,
605 const char **template;
610 for (template = templates; *template; template++) {
611 snprintf(path, PATH_MAX, *template, sysfs, name);
612 cpus = __pmu_cpumask(path);
620 static bool pmu_is_uncore(const char *name)
623 struct cpu_map *cpus;
624 const char *sysfs = sysfs__mountpoint();
626 snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name);
627 cpus = __pmu_cpumask(path);
634 * PMU CORE devices have different name other than cpu in sysfs on some
636 * Looking for possible sysfs files to identify the arm core device.
638 static int is_arm_pmu_core(const char *name)
642 const char *sysfs = sysfs__mountpoint();
647 /* Look for cpu sysfs (specific to arm) */
648 scnprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/cpus",
650 if (stat(path, &st) == 0)
656 static char *perf_pmu__getcpuid(struct perf_pmu *pmu)
661 cpuid = getenv("PERF_CPUID");
663 cpuid = strdup(cpuid);
665 cpuid = get_cpuid_str(pmu);
670 pr_debug("Using CPUID %s\n", cpuid);
676 struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu)
678 struct pmu_events_map *map;
679 char *cpuid = perf_pmu__getcpuid(pmu);
682 /* on some platforms which uses cpus map, cpuid can be NULL for
683 * PMUs other than CORE PMUs.
690 map = &pmu_events_map[i++];
696 if (!strcmp_cpuid_str(map->cpuid, cpuid))
704 * From the pmu_events_map, find the table of PMU events that corresponds
705 * to the current running CPU. Then, add all PMU events from that table
708 static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
711 struct pmu_events_map *map;
712 struct pmu_event *pe;
713 const char *name = pmu->name;
716 map = perf_pmu__find_map(pmu);
721 * Found a matching PMU events table. Create aliases
726 pe = &map->table[i++];
728 if (pe->metric_group || pe->metric_name)
733 if (!is_arm_pmu_core(name)) {
734 pname = pe->pmu ? pe->pmu : "cpu";
737 * uncore alias may be from different PMU
740 if (pmu_is_uncore(name) &&
741 !strncmp(pname, name, strlen(pname)))
744 if (strcmp(pname, name))
749 /* need type casts to override 'const' */
750 __perf_pmu__new_alias(head, NULL, (char *)pe->name,
751 (char *)pe->desc, (char *)pe->event,
752 (char *)pe->long_desc, (char *)pe->topic,
753 (char *)pe->unit, (char *)pe->perpkg,
754 (char *)pe->metric_expr,
755 (char *)pe->metric_name);
759 struct perf_event_attr * __weak
760 perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
765 static int pmu_max_precise(const char *name)
768 int max_precise = -1;
770 scnprintf(path, PATH_MAX,
771 "bus/event_source/devices/%s/caps/max_precise",
774 sysfs__read_int(path, &max_precise);
778 static struct perf_pmu *pmu_lookup(const char *name)
780 struct perf_pmu *pmu;
786 * The pmu data we store & need consists of the pmu
787 * type value and format definitions. Load both right
790 if (pmu_format(name, &format))
794 * Check the type first to avoid unnecessary work.
796 if (pmu_type(name, &type))
799 if (pmu_aliases(name, &aliases))
802 pmu = zalloc(sizeof(*pmu));
806 pmu->cpus = pmu_cpumask(name);
807 pmu->name = strdup(name);
809 pmu->is_uncore = pmu_is_uncore(name);
810 pmu->max_precise = pmu_max_precise(name);
811 pmu_add_cpu_aliases(&aliases, pmu);
813 INIT_LIST_HEAD(&pmu->format);
814 INIT_LIST_HEAD(&pmu->aliases);
815 list_splice(&format, &pmu->format);
816 list_splice(&aliases, &pmu->aliases);
817 list_add_tail(&pmu->list, &pmus);
819 pmu->default_config = perf_pmu__get_default_config(pmu);
824 static struct perf_pmu *pmu_find(const char *name)
826 struct perf_pmu *pmu;
828 list_for_each_entry(pmu, &pmus, list)
829 if (!strcmp(pmu->name, name))
835 struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu)
838 * pmu iterator: If pmu is NULL, we start at the begin,
839 * otherwise return the next pmu. Returns NULL on end.
843 pmu = list_prepare_entry(pmu, &pmus, list);
845 list_for_each_entry_continue(pmu, &pmus, list)
850 struct perf_pmu *perf_pmu__find(const char *name)
852 struct perf_pmu *pmu;
855 * Once PMU is loaded it stays in the list,
856 * so we keep us from multiple reading/parsing
857 * the pmu format definitions.
859 pmu = pmu_find(name);
863 return pmu_lookup(name);
866 static struct perf_pmu_format *
867 pmu_find_format(struct list_head *formats, const char *name)
869 struct perf_pmu_format *format;
871 list_for_each_entry(format, formats, list)
872 if (!strcmp(format->name, name))
878 __u64 perf_pmu__format_bits(struct list_head *formats, const char *name)
880 struct perf_pmu_format *format = pmu_find_format(formats, name);
887 for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS)
888 bits |= 1ULL << fbit;
894 * Sets value based on the format definition (format parameter)
895 * and unformated value (value parameter).
897 static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v,
900 unsigned long fbit, vbit;
902 for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) {
904 if (!test_bit(fbit, format))
907 if (value & (1llu << vbit++))
908 *v |= (1llu << fbit);
910 *v &= ~(1llu << fbit);
914 static __u64 pmu_format_max_value(const unsigned long *format)
918 w = bitmap_weight(format, PERF_PMU_FORMAT_BITS);
922 return (1ULL << w) - 1;
927 * Term is a string term, and might be a param-term. Try to look up it's value
928 * in the remaining terms.
929 * - We have a term like "base-or-format-term=param-term",
930 * - We need to find the value supplied for "param-term" (with param-term named
931 * in a config string) later on in the term list.
933 static int pmu_resolve_param_term(struct parse_events_term *term,
934 struct list_head *head_terms,
937 struct parse_events_term *t;
939 list_for_each_entry(t, head_terms, list) {
940 if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
941 if (!strcmp(t->config, term->config)) {
950 printf("Required parameter '%s' not specified\n", term->config);
955 static char *pmu_formats_string(struct list_head *formats)
957 struct perf_pmu_format *format;
959 struct strbuf buf = STRBUF_INIT;
965 /* sysfs exported terms */
966 list_for_each_entry(format, formats, list)
967 if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0)
970 str = strbuf_detach(&buf, NULL);
972 strbuf_release(&buf);
978 * Setup one of config[12] attr members based on the
979 * user input data - term parameter.
981 static int pmu_config_term(struct list_head *formats,
982 struct perf_event_attr *attr,
983 struct parse_events_term *term,
984 struct list_head *head_terms,
985 bool zero, struct parse_events_error *err)
987 struct perf_pmu_format *format;
992 * If this is a parameter we've already used for parameterized-eval,
993 * skip it in normal eval.
999 * Hardcoded terms should be already in, so nothing
1000 * to be done for them.
1002 if (parse_events__is_hardcoded_term(term))
1005 format = pmu_find_format(formats, term->config);
1008 printf("Invalid event/parameter '%s'\n", term->config);
1010 char *pmu_term = pmu_formats_string(formats);
1012 err->idx = term->err_term;
1013 err->str = strdup("unknown term");
1014 err->help = parse_events_formats_error_string(pmu_term);
1020 switch (format->value) {
1021 case PERF_PMU_FORMAT_VALUE_CONFIG:
1024 case PERF_PMU_FORMAT_VALUE_CONFIG1:
1025 vp = &attr->config1;
1027 case PERF_PMU_FORMAT_VALUE_CONFIG2:
1028 vp = &attr->config2;
1035 * Either directly use a numeric term, or try to translate string terms
1036 * using event parameters.
1038 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
1039 if (term->no_value &&
1040 bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) {
1042 err->idx = term->err_val;
1043 err->str = strdup("no value assigned for term");
1048 val = term->val.num;
1049 } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
1050 if (strcmp(term->val.str, "?")) {
1052 pr_info("Invalid sysfs entry %s=%s\n",
1053 term->config, term->val.str);
1056 err->idx = term->err_val;
1057 err->str = strdup("expected numeric value");
1062 if (pmu_resolve_param_term(term, head_terms, &val))
1067 max_val = pmu_format_max_value(format->bits);
1068 if (val > max_val) {
1070 err->idx = term->err_val;
1071 if (asprintf(&err->str,
1072 "value too big for format, maximum is %llu",
1073 (unsigned long long)max_val) < 0)
1074 err->str = strdup("value too big for format");
1078 * Assume we don't care if !err, in which case the value will be
1079 * silently truncated.
1083 pmu_format_value(format->bits, val, vp, zero);
1087 int perf_pmu__config_terms(struct list_head *formats,
1088 struct perf_event_attr *attr,
1089 struct list_head *head_terms,
1090 bool zero, struct parse_events_error *err)
1092 struct parse_events_term *term;
1094 list_for_each_entry(term, head_terms, list) {
1095 if (pmu_config_term(formats, attr, term, head_terms,
1104 * Configures event's 'attr' parameter based on the:
1105 * 1) users input - specified in terms parameter
1106 * 2) pmu format definitions - specified by pmu parameter
1108 int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
1109 struct list_head *head_terms,
1110 struct parse_events_error *err)
1112 bool zero = !!pmu->default_config;
1114 attr->type = pmu->type;
1115 return perf_pmu__config_terms(&pmu->format, attr, head_terms,
1119 static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu,
1120 struct parse_events_term *term)
1122 struct perf_pmu_alias *alias;
1125 if (parse_events__is_hardcoded_term(term))
1128 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
1129 if (term->val.num != 1)
1131 if (pmu_find_format(&pmu->format, term->config))
1133 name = term->config;
1134 } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
1135 if (strcasecmp(term->config, "event"))
1137 name = term->val.str;
1142 list_for_each_entry(alias, &pmu->aliases, list) {
1143 if (!strcasecmp(alias->name, name))
1150 static int check_info_data(struct perf_pmu_alias *alias,
1151 struct perf_pmu_info *info)
1154 * Only one term in event definition can
1155 * define unit, scale and snapshot, fail
1156 * if there's more than one.
1158 if ((info->unit && alias->unit[0]) ||
1159 (info->scale && alias->scale) ||
1160 (info->snapshot && alias->snapshot))
1164 info->unit = alias->unit;
1167 info->scale = alias->scale;
1169 if (alias->snapshot)
1170 info->snapshot = alias->snapshot;
1176 * Find alias in the terms list and replace it with the terms
1177 * defined for the alias
1179 int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
1180 struct perf_pmu_info *info)
1182 struct parse_events_term *term, *h;
1183 struct perf_pmu_alias *alias;
1186 info->per_pkg = false;
1189 * Mark unit and scale as not set
1190 * (different from default values, see below)
1194 info->snapshot = false;
1195 info->metric_expr = NULL;
1196 info->metric_name = NULL;
1198 list_for_each_entry_safe(term, h, head_terms, list) {
1199 alias = pmu_find_alias(pmu, term);
1202 ret = pmu_alias_terms(alias, &term->list);
1206 ret = check_info_data(alias, info);
1211 info->per_pkg = true;
1212 info->metric_expr = alias->metric_expr;
1213 info->metric_name = alias->metric_name;
1215 list_del(&term->list);
1220 * if no unit or scale foundin aliases, then
1221 * set defaults as for evsel
1222 * unit cannot left to NULL
1224 if (info->unit == NULL)
1227 if (info->scale == 0.0)
1233 int perf_pmu__new_format(struct list_head *list, char *name,
1234 int config, unsigned long *bits)
1236 struct perf_pmu_format *format;
1238 format = zalloc(sizeof(*format));
1242 format->name = strdup(name);
1243 format->value = config;
1244 memcpy(format->bits, bits, sizeof(format->bits));
1246 list_add_tail(&format->list, list);
1250 void perf_pmu__set_format(unsigned long *bits, long from, long to)
1257 memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS));
1258 for (b = from; b <= to; b++)
1262 static int sub_non_neg(int a, int b)
1269 static char *format_alias(char *buf, int len, struct perf_pmu *pmu,
1270 struct perf_pmu_alias *alias)
1272 struct parse_events_term *term;
1273 int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name);
1275 list_for_each_entry(term, &alias->terms, list) {
1276 if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
1277 used += snprintf(buf + used, sub_non_neg(len, used),
1278 ",%s=%s", term->config,
1282 if (sub_non_neg(len, used) > 0) {
1286 if (sub_non_neg(len, used) > 0) {
1290 buf[len - 1] = '\0';
1295 static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
1296 struct perf_pmu_alias *alias)
1298 snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name);
1312 static int cmp_sevent(const void *a, const void *b)
1314 const struct sevent *as = a;
1315 const struct sevent *bs = b;
1317 /* Put extra events last */
1318 if (!!as->desc != !!bs->desc)
1319 return !!as->desc - !!bs->desc;
1320 if (as->topic && bs->topic) {
1321 int n = strcmp(as->topic, bs->topic);
1326 return strcmp(as->name, bs->name);
1329 static void wordwrap(char *s, int start, int max, int corr)
1335 int wlen = strcspn(s, " \t");
1337 if (column + wlen >= max && column > start) {
1338 printf("\n%*s", start, "");
1339 column = start + corr;
1341 n = printf("%s%.*s", column > start ? " " : "", wlen, s);
1350 void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
1351 bool long_desc, bool details_flag)
1353 struct perf_pmu *pmu;
1354 struct perf_pmu_alias *alias;
1358 struct sevent *aliases;
1360 int columns = pager_get_columns();
1365 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1366 list_for_each_entry(alias, &pmu->aliases, list)
1368 if (pmu->selectable)
1371 aliases = zalloc(sizeof(struct sevent) * len);
1376 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1377 list_for_each_entry(alias, &pmu->aliases, list) {
1378 char *name = alias->desc ? alias->name :
1379 format_alias(buf, sizeof(buf), pmu, alias);
1380 bool is_cpu = !strcmp(pmu->name, "cpu");
1382 if (event_glob != NULL &&
1383 !(strglobmatch_nocase(name, event_glob) ||
1384 (!is_cpu && strglobmatch_nocase(alias->name,
1387 strglobmatch_nocase(alias->topic, event_glob))))
1390 if (is_cpu && !name_only && !alias->desc)
1391 name = format_alias_or(buf, sizeof(buf), pmu, alias);
1393 aliases[j].name = name;
1394 if (is_cpu && !name_only && !alias->desc)
1395 aliases[j].name = format_alias_or(buf,
1398 aliases[j].name = strdup(aliases[j].name);
1399 if (!aliases[j].name)
1402 aliases[j].desc = long_desc ? alias->long_desc :
1404 aliases[j].topic = alias->topic;
1405 aliases[j].str = alias->str;
1406 aliases[j].pmu = pmu->name;
1407 aliases[j].metric_expr = alias->metric_expr;
1408 aliases[j].metric_name = alias->metric_name;
1411 if (pmu->selectable &&
1412 (event_glob == NULL || strglobmatch(pmu->name, event_glob))) {
1414 if (asprintf(&s, "%s//", pmu->name) < 0)
1416 aliases[j].name = s;
1421 qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
1422 for (j = 0; j < len; j++) {
1423 /* Skip duplicates */
1424 if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name))
1427 printf("%s ", aliases[j].name);
1430 if (aliases[j].desc && !quiet_flag) {
1433 if (aliases[j].topic && (!topic ||
1434 strcmp(topic, aliases[j].topic))) {
1435 printf("%s%s:\n", topic ? "\n" : "",
1437 topic = aliases[j].topic;
1439 printf(" %-50s\n", aliases[j].name);
1440 printf("%*s", 8, "[");
1441 wordwrap(aliases[j].desc, 8, columns, 0);
1444 printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str);
1445 if (aliases[j].metric_name)
1446 printf(" MetricName: %s", aliases[j].metric_name);
1447 if (aliases[j].metric_expr)
1448 printf(" MetricExpr: %s", aliases[j].metric_expr);
1452 printf(" %-50s [Kernel PMU event]\n", aliases[j].name);
1455 if (printed && pager_in_use())
1458 for (j = 0; j < len; j++)
1459 zfree(&aliases[j].name);
1464 printf("FATAL: not enough memory to print PMU events\n");
1469 bool pmu_have_event(const char *pname, const char *name)
1471 struct perf_pmu *pmu;
1472 struct perf_pmu_alias *alias;
1475 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1476 if (strcmp(pname, pmu->name))
1478 list_for_each_entry(alias, &pmu->aliases, list)
1479 if (!strcmp(alias->name, name))
1485 static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name)
1488 char path[PATH_MAX];
1491 sysfs = sysfs__mountpoint();
1495 snprintf(path, PATH_MAX,
1496 "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name);
1498 if (stat(path, &st) < 0)
1501 return fopen(path, "r");
1504 int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt,
1511 va_start(args, fmt);
1512 file = perf_pmu__open_file(pmu, name);
1514 ret = vfscanf(file, fmt, args);