1 #include <linux/list.h>
2 #include <linux/compiler.h>
11 #include <api/fs/fs.h>
15 #include "parse-events.h"
18 #include "pmu-events/pmu-events.h"
22 struct perf_pmu_format
{
25 DECLARE_BITMAP(bits
, PERF_PMU_FORMAT_BITS
);
26 struct list_head list
;
29 #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
31 int perf_pmu_parse(struct list_head
*list
, char *name
);
32 extern FILE *perf_pmu_in
;
34 static LIST_HEAD(pmus
);
37 * Parse & process all the sysfs attributes located under
38 * the directory specified in 'dir' parameter.
40 int perf_pmu__format_parse(char *dir
, struct list_head
*head
)
42 struct dirent
*evt_ent
;
46 format_dir
= opendir(dir
);
50 while (!ret
&& (evt_ent
= readdir(format_dir
))) {
52 char *name
= evt_ent
->d_name
;
55 if (!strcmp(name
, ".") || !strcmp(name
, ".."))
58 snprintf(path
, PATH_MAX
, "%s/%s", dir
, name
);
61 file
= fopen(path
, "r");
66 ret
= perf_pmu_parse(head
, name
);
75 * Reading/parsing the default pmu format definition, which should be
77 * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes.
79 static int pmu_format(const char *name
, struct list_head
*format
)
83 const char *sysfs
= sysfs__mountpoint();
88 snprintf(path
, PATH_MAX
,
89 "%s" EVENT_SOURCE_DEVICE_PATH
"%s/format", sysfs
, name
);
91 if (stat(path
, &st
) < 0)
92 return 0; /* no error if format does not exist */
94 if (perf_pmu__format_parse(path
, format
))
100 static int convert_scale(const char *scale
, char **end
, double *sval
)
106 * save current locale
108 lc
= setlocale(LC_NUMERIC
, NULL
);
111 * The lc string may be allocated in static storage,
112 * so get a dynamic copy to make it survive setlocale
122 * force to C locale to ensure kernel
123 * scale string is converted correctly.
124 * kernel uses default C locale.
126 setlocale(LC_NUMERIC
, "C");
128 *sval
= strtod(scale
, end
);
132 setlocale(LC_NUMERIC
, lc
);
137 static int perf_pmu__parse_scale(struct perf_pmu_alias
*alias
, char *dir
, char *name
)
145 snprintf(path
, PATH_MAX
, "%s/%s.scale", dir
, name
);
147 fd
= open(path
, O_RDONLY
);
151 if (fstat(fd
, &st
) < 0)
154 sret
= read(fd
, scale
, sizeof(scale
)-1);
158 if (scale
[sret
- 1] == '\n')
159 scale
[sret
- 1] = '\0';
163 ret
= convert_scale(scale
, NULL
, &alias
->scale
);
169 static int perf_pmu__parse_unit(struct perf_pmu_alias
*alias
, char *dir
, char *name
)
175 snprintf(path
, PATH_MAX
, "%s/%s.unit", dir
, name
);
177 fd
= open(path
, O_RDONLY
);
181 sret
= read(fd
, alias
->unit
, UNIT_MAX_LEN
);
187 if (alias
->unit
[sret
- 1] == '\n')
188 alias
->unit
[sret
- 1] = '\0';
190 alias
->unit
[sret
] = '\0';
195 alias
->unit
[0] = '\0';
200 perf_pmu__parse_per_pkg(struct perf_pmu_alias
*alias
, char *dir
, char *name
)
205 snprintf(path
, PATH_MAX
, "%s/%s.per-pkg", dir
, name
);
207 fd
= open(path
, O_RDONLY
);
213 alias
->per_pkg
= true;
217 static int perf_pmu__parse_snapshot(struct perf_pmu_alias
*alias
,
218 char *dir
, char *name
)
223 snprintf(path
, PATH_MAX
, "%s/%s.snapshot", dir
, name
);
225 fd
= open(path
, O_RDONLY
);
229 alias
->snapshot
= true;
234 static int __perf_pmu__new_alias(struct list_head
*list
, char *dir
, char *name
,
235 char *desc
, char *val
,
236 char *long_desc
, char *topic
,
237 char *unit
, char *perpkg
,
241 struct perf_pmu_alias
*alias
;
245 alias
= malloc(sizeof(*alias
));
249 INIT_LIST_HEAD(&alias
->terms
);
251 alias
->unit
[0] = '\0';
252 alias
->per_pkg
= false;
253 alias
->snapshot
= false;
255 ret
= parse_events_terms(&alias
->terms
, val
);
257 pr_err("Cannot parse alias %s: %d\n", val
, ret
);
262 alias
->name
= strdup(name
);
265 * load unit name and scale if available
267 perf_pmu__parse_unit(alias
, dir
, name
);
268 perf_pmu__parse_scale(alias
, dir
, name
);
269 perf_pmu__parse_per_pkg(alias
, dir
, name
);
270 perf_pmu__parse_snapshot(alias
, dir
, name
);
273 alias
->metric_expr
= metric_expr
? strdup(metric_expr
) : NULL
;
274 alias
->metric_name
= metric_name
? strdup(metric_name
): NULL
;
275 alias
->desc
= desc
? strdup(desc
) : NULL
;
276 alias
->long_desc
= long_desc
? strdup(long_desc
) :
277 desc
? strdup(desc
) : NULL
;
278 alias
->topic
= topic
? strdup(topic
) : NULL
;
280 if (convert_scale(unit
, &unit
, &alias
->scale
) < 0)
282 snprintf(alias
->unit
, sizeof(alias
->unit
), "%s", unit
);
284 alias
->per_pkg
= perpkg
&& sscanf(perpkg
, "%d", &num
) == 1 && num
== 1;
285 alias
->str
= strdup(val
);
287 list_add_tail(&alias
->list
, list
);
292 static int perf_pmu__new_alias(struct list_head
*list
, char *dir
, char *name
, FILE *file
)
297 ret
= fread(buf
, 1, sizeof(buf
), file
);
303 return __perf_pmu__new_alias(list
, dir
, name
, NULL
, buf
, NULL
, NULL
, NULL
,
307 static inline bool pmu_alias_info_file(char *name
)
312 if (len
> 5 && !strcmp(name
+ len
- 5, ".unit"))
314 if (len
> 6 && !strcmp(name
+ len
- 6, ".scale"))
316 if (len
> 8 && !strcmp(name
+ len
- 8, ".per-pkg"))
318 if (len
> 9 && !strcmp(name
+ len
- 9, ".snapshot"))
325 * Process all the sysfs attributes located under the directory
326 * specified in 'dir' parameter.
328 static int pmu_aliases_parse(char *dir
, struct list_head
*head
)
330 struct dirent
*evt_ent
;
333 event_dir
= opendir(dir
);
337 while ((evt_ent
= readdir(event_dir
))) {
339 char *name
= evt_ent
->d_name
;
342 if (!strcmp(name
, ".") || !strcmp(name
, ".."))
346 * skip info files parsed in perf_pmu__new_alias()
348 if (pmu_alias_info_file(name
))
351 snprintf(path
, PATH_MAX
, "%s/%s", dir
, name
);
353 file
= fopen(path
, "r");
355 pr_debug("Cannot open %s\n", path
);
359 if (perf_pmu__new_alias(head
, dir
, name
, file
) < 0)
360 pr_debug("Cannot set up %s\n", name
);
369 * Reading the pmu event aliases definition, which should be located at:
370 * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes.
372 static int pmu_aliases(const char *name
, struct list_head
*head
)
376 const char *sysfs
= sysfs__mountpoint();
381 snprintf(path
, PATH_MAX
,
382 "%s/bus/event_source/devices/%s/events", sysfs
, name
);
384 if (stat(path
, &st
) < 0)
385 return 0; /* no error if 'events' does not exist */
387 if (pmu_aliases_parse(path
, head
))
393 static int pmu_alias_terms(struct perf_pmu_alias
*alias
,
394 struct list_head
*terms
)
396 struct parse_events_term
*term
, *cloned
;
400 list_for_each_entry(term
, &alias
->terms
, list
) {
401 ret
= parse_events_term__clone(&cloned
, term
);
403 parse_events_terms__purge(&list
);
406 list_add_tail(&cloned
->list
, &list
);
408 list_splice(&list
, terms
);
413 * Reading/parsing the default pmu type value, which should be
415 * /sys/bus/event_source/devices/<dev>/type as sysfs attribute.
417 static int pmu_type(const char *name
, __u32
*type
)
423 const char *sysfs
= sysfs__mountpoint();
428 snprintf(path
, PATH_MAX
,
429 "%s" EVENT_SOURCE_DEVICE_PATH
"%s/type", sysfs
, name
);
431 if (stat(path
, &st
) < 0)
434 file
= fopen(path
, "r");
438 if (1 != fscanf(file
, "%u", type
))
445 /* Add all pmus in sysfs to pmu list: */
446 static void pmu_read_sysfs(void)
451 const char *sysfs
= sysfs__mountpoint();
456 snprintf(path
, PATH_MAX
,
457 "%s" EVENT_SOURCE_DEVICE_PATH
, sysfs
);
463 while ((dent
= readdir(dir
))) {
464 if (!strcmp(dent
->d_name
, ".") || !strcmp(dent
->d_name
, ".."))
466 /* add to static LIST_HEAD(pmus): */
467 perf_pmu__find(dent
->d_name
);
473 static struct cpu_map
*pmu_cpumask(const char *name
)
478 struct cpu_map
*cpus
;
479 const char *sysfs
= sysfs__mountpoint();
480 const char *templates
[] = {
481 "%s/bus/event_source/devices/%s/cpumask",
482 "%s/bus/event_source/devices/%s/cpus",
485 const char **template;
490 for (template = templates
; *template; template++) {
491 snprintf(path
, PATH_MAX
, *template, sysfs
, name
);
492 if (stat(path
, &st
) == 0)
499 file
= fopen(path
, "r");
503 cpus
= cpu_map__read(file
);
509 * Return the CPU id as a raw string.
511 * Each architecture should provide a more precise id string that
512 * can be use to match the architecture's "mapfile".
514 char * __weak
get_cpuid_str(void)
520 * From the pmu_events_map, find the table of PMU events that corresponds
521 * to the current running CPU. Then, add all PMU events from that table
524 static void pmu_add_cpu_aliases(struct list_head
*head
, const char *name
)
527 struct pmu_events_map
*map
;
528 struct pmu_event
*pe
;
532 cpuid
= getenv("PERF_CPUID");
534 cpuid
= strdup(cpuid
);
536 cpuid
= get_cpuid_str();
541 pr_debug("Using CPUID %s\n", cpuid
);
547 map
= &pmu_events_map
[i
++];
551 if (!strcmp(map
->cpuid
, cpuid
))
556 * Found a matching PMU events table. Create aliases
562 pe
= &map
->table
[i
++];
566 pname
= pe
->pmu
? pe
->pmu
: "cpu";
567 if (strncmp(pname
, name
, strlen(pname
)))
570 /* need type casts to override 'const' */
571 __perf_pmu__new_alias(head
, NULL
, (char *)pe
->name
,
572 (char *)pe
->desc
, (char *)pe
->event
,
573 (char *)pe
->long_desc
, (char *)pe
->topic
,
574 (char *)pe
->unit
, (char *)pe
->perpkg
,
575 (char *)pe
->metric_expr
,
576 (char *)pe
->metric_name
);
583 struct perf_event_attr
* __weak
584 perf_pmu__get_default_config(struct perf_pmu
*pmu __maybe_unused
)
589 static struct perf_pmu
*pmu_lookup(const char *name
)
591 struct perf_pmu
*pmu
;
597 * The pmu data we store & need consists of the pmu
598 * type value and format definitions. Load both right
601 if (pmu_format(name
, &format
))
605 * Check the type first to avoid unnecessary work.
607 if (pmu_type(name
, &type
))
610 if (pmu_aliases(name
, &aliases
))
613 pmu_add_cpu_aliases(&aliases
, name
);
614 pmu
= zalloc(sizeof(*pmu
));
618 pmu
->cpus
= pmu_cpumask(name
);
620 INIT_LIST_HEAD(&pmu
->format
);
621 INIT_LIST_HEAD(&pmu
->aliases
);
622 list_splice(&format
, &pmu
->format
);
623 list_splice(&aliases
, &pmu
->aliases
);
624 pmu
->name
= strdup(name
);
626 list_add_tail(&pmu
->list
, &pmus
);
628 pmu
->default_config
= perf_pmu__get_default_config(pmu
);
633 static struct perf_pmu
*pmu_find(const char *name
)
635 struct perf_pmu
*pmu
;
637 list_for_each_entry(pmu
, &pmus
, list
)
638 if (!strcmp(pmu
->name
, name
))
644 struct perf_pmu
*perf_pmu__scan(struct perf_pmu
*pmu
)
647 * pmu iterator: If pmu is NULL, we start at the begin,
648 * otherwise return the next pmu. Returns NULL on end.
652 pmu
= list_prepare_entry(pmu
, &pmus
, list
);
654 list_for_each_entry_continue(pmu
, &pmus
, list
)
659 struct perf_pmu
*perf_pmu__find(const char *name
)
661 struct perf_pmu
*pmu
;
664 * Once PMU is loaded it stays in the list,
665 * so we keep us from multiple reading/parsing
666 * the pmu format definitions.
668 pmu
= pmu_find(name
);
672 return pmu_lookup(name
);
675 static struct perf_pmu_format
*
676 pmu_find_format(struct list_head
*formats
, const char *name
)
678 struct perf_pmu_format
*format
;
680 list_for_each_entry(format
, formats
, list
)
681 if (!strcmp(format
->name
, name
))
687 __u64
perf_pmu__format_bits(struct list_head
*formats
, const char *name
)
689 struct perf_pmu_format
*format
= pmu_find_format(formats
, name
);
696 for_each_set_bit(fbit
, format
->bits
, PERF_PMU_FORMAT_BITS
)
697 bits
|= 1ULL << fbit
;
703 * Sets value based on the format definition (format parameter)
704 * and unformated value (value parameter).
706 static void pmu_format_value(unsigned long *format
, __u64 value
, __u64
*v
,
709 unsigned long fbit
, vbit
;
711 for (fbit
= 0, vbit
= 0; fbit
< PERF_PMU_FORMAT_BITS
; fbit
++) {
713 if (!test_bit(fbit
, format
))
716 if (value
& (1llu << vbit
++))
717 *v
|= (1llu << fbit
);
719 *v
&= ~(1llu << fbit
);
723 static __u64
pmu_format_max_value(const unsigned long *format
)
728 for_each_set_bit(fbit
, format
, PERF_PMU_FORMAT_BITS
)
735 * Term is a string term, and might be a param-term. Try to look up it's value
736 * in the remaining terms.
737 * - We have a term like "base-or-format-term=param-term",
738 * - We need to find the value supplied for "param-term" (with param-term named
739 * in a config string) later on in the term list.
741 static int pmu_resolve_param_term(struct parse_events_term
*term
,
742 struct list_head
*head_terms
,
745 struct parse_events_term
*t
;
747 list_for_each_entry(t
, head_terms
, list
) {
748 if (t
->type_val
== PARSE_EVENTS__TERM_TYPE_NUM
) {
749 if (!strcmp(t
->config
, term
->config
)) {
758 printf("Required parameter '%s' not specified\n", term
->config
);
763 static char *pmu_formats_string(struct list_head
*formats
)
765 struct perf_pmu_format
*format
;
767 struct strbuf buf
= STRBUF_INIT
;
773 /* sysfs exported terms */
774 list_for_each_entry(format
, formats
, list
)
775 if (strbuf_addf(&buf
, i
++ ? ",%s" : "%s", format
->name
) < 0)
778 str
= strbuf_detach(&buf
, NULL
);
780 strbuf_release(&buf
);
786 * Setup one of config[12] attr members based on the
787 * user input data - term parameter.
789 static int pmu_config_term(struct list_head
*formats
,
790 struct perf_event_attr
*attr
,
791 struct parse_events_term
*term
,
792 struct list_head
*head_terms
,
793 bool zero
, struct parse_events_error
*err
)
795 struct perf_pmu_format
*format
;
800 * If this is a parameter we've already used for parameterized-eval,
801 * skip it in normal eval.
807 * Hardcoded terms should be already in, so nothing
808 * to be done for them.
810 if (parse_events__is_hardcoded_term(term
))
813 format
= pmu_find_format(formats
, term
->config
);
816 printf("Invalid event/parameter '%s'\n", term
->config
);
818 char *pmu_term
= pmu_formats_string(formats
);
820 err
->idx
= term
->err_term
;
821 err
->str
= strdup("unknown term");
822 err
->help
= parse_events_formats_error_string(pmu_term
);
828 switch (format
->value
) {
829 case PERF_PMU_FORMAT_VALUE_CONFIG
:
832 case PERF_PMU_FORMAT_VALUE_CONFIG1
:
835 case PERF_PMU_FORMAT_VALUE_CONFIG2
:
843 * Either directly use a numeric term, or try to translate string terms
844 * using event parameters.
846 if (term
->type_val
== PARSE_EVENTS__TERM_TYPE_NUM
) {
847 if (term
->no_value
&&
848 bitmap_weight(format
->bits
, PERF_PMU_FORMAT_BITS
) > 1) {
850 err
->idx
= term
->err_val
;
851 err
->str
= strdup("no value assigned for term");
857 } else if (term
->type_val
== PARSE_EVENTS__TERM_TYPE_STR
) {
858 if (strcmp(term
->val
.str
, "?")) {
860 pr_info("Invalid sysfs entry %s=%s\n",
861 term
->config
, term
->val
.str
);
864 err
->idx
= term
->err_val
;
865 err
->str
= strdup("expected numeric value");
870 if (pmu_resolve_param_term(term
, head_terms
, &val
))
875 max_val
= pmu_format_max_value(format
->bits
);
878 err
->idx
= term
->err_val
;
879 if (asprintf(&err
->str
,
880 "value too big for format, maximum is %llu",
881 (unsigned long long)max_val
) < 0)
882 err
->str
= strdup("value too big for format");
886 * Assume we don't care if !err, in which case the value will be
887 * silently truncated.
891 pmu_format_value(format
->bits
, val
, vp
, zero
);
895 int perf_pmu__config_terms(struct list_head
*formats
,
896 struct perf_event_attr
*attr
,
897 struct list_head
*head_terms
,
898 bool zero
, struct parse_events_error
*err
)
900 struct parse_events_term
*term
;
902 list_for_each_entry(term
, head_terms
, list
) {
903 if (pmu_config_term(formats
, attr
, term
, head_terms
,
912 * Configures event's 'attr' parameter based on the:
913 * 1) users input - specified in terms parameter
914 * 2) pmu format definitions - specified by pmu parameter
916 int perf_pmu__config(struct perf_pmu
*pmu
, struct perf_event_attr
*attr
,
917 struct list_head
*head_terms
,
918 struct parse_events_error
*err
)
920 bool zero
= !!pmu
->default_config
;
922 attr
->type
= pmu
->type
;
923 return perf_pmu__config_terms(&pmu
->format
, attr
, head_terms
,
927 static struct perf_pmu_alias
*pmu_find_alias(struct perf_pmu
*pmu
,
928 struct parse_events_term
*term
)
930 struct perf_pmu_alias
*alias
;
933 if (parse_events__is_hardcoded_term(term
))
936 if (term
->type_val
== PARSE_EVENTS__TERM_TYPE_NUM
) {
937 if (term
->val
.num
!= 1)
939 if (pmu_find_format(&pmu
->format
, term
->config
))
942 } else if (term
->type_val
== PARSE_EVENTS__TERM_TYPE_STR
) {
943 if (strcasecmp(term
->config
, "event"))
945 name
= term
->val
.str
;
950 list_for_each_entry(alias
, &pmu
->aliases
, list
) {
951 if (!strcasecmp(alias
->name
, name
))
958 static int check_info_data(struct perf_pmu_alias
*alias
,
959 struct perf_pmu_info
*info
)
962 * Only one term in event definition can
963 * define unit, scale and snapshot, fail
964 * if there's more than one.
966 if ((info
->unit
&& alias
->unit
[0]) ||
967 (info
->scale
&& alias
->scale
) ||
968 (info
->snapshot
&& alias
->snapshot
))
972 info
->unit
= alias
->unit
;
975 info
->scale
= alias
->scale
;
978 info
->snapshot
= alias
->snapshot
;
984 * Find alias in the terms list and replace it with the terms
985 * defined for the alias
987 int perf_pmu__check_alias(struct perf_pmu
*pmu
, struct list_head
*head_terms
,
988 struct perf_pmu_info
*info
)
990 struct parse_events_term
*term
, *h
;
991 struct perf_pmu_alias
*alias
;
994 info
->per_pkg
= false;
997 * Mark unit and scale as not set
998 * (different from default values, see below)
1002 info
->snapshot
= false;
1003 info
->metric_expr
= NULL
;
1004 info
->metric_name
= NULL
;
1006 list_for_each_entry_safe(term
, h
, head_terms
, list
) {
1007 alias
= pmu_find_alias(pmu
, term
);
1010 ret
= pmu_alias_terms(alias
, &term
->list
);
1014 ret
= check_info_data(alias
, info
);
1019 info
->per_pkg
= true;
1020 info
->metric_expr
= alias
->metric_expr
;
1021 info
->metric_name
= alias
->metric_name
;
1023 list_del(&term
->list
);
1028 * if no unit or scale foundin aliases, then
1029 * set defaults as for evsel
1030 * unit cannot left to NULL
1032 if (info
->unit
== NULL
)
1035 if (info
->scale
== 0.0)
1041 int perf_pmu__new_format(struct list_head
*list
, char *name
,
1042 int config
, unsigned long *bits
)
1044 struct perf_pmu_format
*format
;
1046 format
= zalloc(sizeof(*format
));
1050 format
->name
= strdup(name
);
1051 format
->value
= config
;
1052 memcpy(format
->bits
, bits
, sizeof(format
->bits
));
1054 list_add_tail(&format
->list
, list
);
1058 void perf_pmu__set_format(unsigned long *bits
, long from
, long to
)
1065 memset(bits
, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS
));
1066 for (b
= from
; b
<= to
; b
++)
1070 static int sub_non_neg(int a
, int b
)
1077 static char *format_alias(char *buf
, int len
, struct perf_pmu
*pmu
,
1078 struct perf_pmu_alias
*alias
)
1080 struct parse_events_term
*term
;
1081 int used
= snprintf(buf
, len
, "%s/%s", pmu
->name
, alias
->name
);
1083 list_for_each_entry(term
, &alias
->terms
, list
) {
1084 if (term
->type_val
== PARSE_EVENTS__TERM_TYPE_STR
)
1085 used
+= snprintf(buf
+ used
, sub_non_neg(len
, used
),
1086 ",%s=%s", term
->config
,
1090 if (sub_non_neg(len
, used
) > 0) {
1094 if (sub_non_neg(len
, used
) > 0) {
1098 buf
[len
- 1] = '\0';
1103 static char *format_alias_or(char *buf
, int len
, struct perf_pmu
*pmu
,
1104 struct perf_pmu_alias
*alias
)
1106 snprintf(buf
, len
, "%s OR %s/%s/", alias
->name
, pmu
->name
, alias
->name
);
1120 static int cmp_sevent(const void *a
, const void *b
)
1122 const struct sevent
*as
= a
;
1123 const struct sevent
*bs
= b
;
1125 /* Put extra events last */
1126 if (!!as
->desc
!= !!bs
->desc
)
1127 return !!as
->desc
- !!bs
->desc
;
1128 if (as
->topic
&& bs
->topic
) {
1129 int n
= strcmp(as
->topic
, bs
->topic
);
1134 return strcmp(as
->name
, bs
->name
);
1137 static void wordwrap(char *s
, int start
, int max
, int corr
)
1143 int wlen
= strcspn(s
, " \t");
1145 if (column
+ wlen
>= max
&& column
> start
) {
1146 printf("\n%*s", start
, "");
1147 column
= start
+ corr
;
1149 n
= printf("%s%.*s", column
> start
? " " : "", wlen
, s
);
1158 void print_pmu_events(const char *event_glob
, bool name_only
, bool quiet_flag
,
1159 bool long_desc
, bool details_flag
)
1161 struct perf_pmu
*pmu
;
1162 struct perf_pmu_alias
*alias
;
1166 struct sevent
*aliases
;
1168 int columns
= pager_get_columns();
1173 while ((pmu
= perf_pmu__scan(pmu
)) != NULL
) {
1174 list_for_each_entry(alias
, &pmu
->aliases
, list
)
1176 if (pmu
->selectable
)
1179 aliases
= zalloc(sizeof(struct sevent
) * len
);
1184 while ((pmu
= perf_pmu__scan(pmu
)) != NULL
) {
1185 list_for_each_entry(alias
, &pmu
->aliases
, list
) {
1186 char *name
= alias
->desc
? alias
->name
:
1187 format_alias(buf
, sizeof(buf
), pmu
, alias
);
1188 bool is_cpu
= !strcmp(pmu
->name
, "cpu");
1190 if (event_glob
!= NULL
&&
1191 !(strglobmatch_nocase(name
, event_glob
) ||
1192 (!is_cpu
&& strglobmatch_nocase(alias
->name
,
1195 strglobmatch_nocase(alias
->topic
, event_glob
))))
1198 if (is_cpu
&& !name_only
&& !alias
->desc
)
1199 name
= format_alias_or(buf
, sizeof(buf
), pmu
, alias
);
1201 aliases
[j
].name
= name
;
1202 if (is_cpu
&& !name_only
&& !alias
->desc
)
1203 aliases
[j
].name
= format_alias_or(buf
,
1206 aliases
[j
].name
= strdup(aliases
[j
].name
);
1207 if (!aliases
[j
].name
)
1210 aliases
[j
].desc
= long_desc
? alias
->long_desc
:
1212 aliases
[j
].topic
= alias
->topic
;
1213 aliases
[j
].str
= alias
->str
;
1214 aliases
[j
].pmu
= pmu
->name
;
1215 aliases
[j
].metric_expr
= alias
->metric_expr
;
1216 aliases
[j
].metric_name
= alias
->metric_name
;
1219 if (pmu
->selectable
&&
1220 (event_glob
== NULL
|| strglobmatch(pmu
->name
, event_glob
))) {
1222 if (asprintf(&s
, "%s//", pmu
->name
) < 0)
1224 aliases
[j
].name
= s
;
1229 qsort(aliases
, len
, sizeof(struct sevent
), cmp_sevent
);
1230 for (j
= 0; j
< len
; j
++) {
1231 /* Skip duplicates */
1232 if (j
> 0 && !strcmp(aliases
[j
].name
, aliases
[j
- 1].name
))
1235 printf("%s ", aliases
[j
].name
);
1238 if (aliases
[j
].desc
&& !quiet_flag
) {
1241 if (aliases
[j
].topic
&& (!topic
||
1242 strcmp(topic
, aliases
[j
].topic
))) {
1243 printf("%s%s:\n", topic
? "\n" : "",
1245 topic
= aliases
[j
].topic
;
1247 printf(" %-50s\n", aliases
[j
].name
);
1248 printf("%*s", 8, "[");
1249 wordwrap(aliases
[j
].desc
, 8, columns
, 0);
1252 printf("%*s%s/%s/ ", 8, "", aliases
[j
].pmu
, aliases
[j
].str
);
1253 if (aliases
[j
].metric_name
)
1254 printf(" MetricName: %s", aliases
[j
].metric_name
);
1255 if (aliases
[j
].metric_expr
)
1256 printf(" MetricExpr: %s", aliases
[j
].metric_expr
);
1260 printf(" %-50s [Kernel PMU event]\n", aliases
[j
].name
);
1263 if (printed
&& pager_in_use())
1266 for (j
= 0; j
< len
; j
++)
1267 zfree(&aliases
[j
].name
);
1272 printf("FATAL: not enough memory to print PMU events\n");
1277 bool pmu_have_event(const char *pname
, const char *name
)
1279 struct perf_pmu
*pmu
;
1280 struct perf_pmu_alias
*alias
;
1283 while ((pmu
= perf_pmu__scan(pmu
)) != NULL
) {
1284 if (strcmp(pname
, pmu
->name
))
1286 list_for_each_entry(alias
, &pmu
->aliases
, list
)
1287 if (!strcmp(alias
->name
, name
))
1293 static FILE *perf_pmu__open_file(struct perf_pmu
*pmu
, const char *name
)
1296 char path
[PATH_MAX
];
1299 sysfs
= sysfs__mountpoint();
1303 snprintf(path
, PATH_MAX
,
1304 "%s" EVENT_SOURCE_DEVICE_PATH
"%s/%s", sysfs
, pmu
->name
, name
);
1306 if (stat(path
, &st
) < 0)
1309 return fopen(path
, "r");
1312 int perf_pmu__scan_file(struct perf_pmu
*pmu
, const char *name
, const char *fmt
,
1319 va_start(args
, fmt
);
1320 file
= perf_pmu__open_file(pmu
, name
);
1322 ret
= vfscanf(file
, fmt
, args
);