1 #include <linux/hw_breakpoint.h>
6 #include "parse-options.h"
7 #include "parse-events.h"
9 #include "linux/string.h"
13 #include <lk/debugfs.h>
14 #include "parse-events-bison.h"
15 #define YY_EXTRA_TYPE int
16 #include "parse-events-flex.h"
18 #include "thread_map.h"
20 #define MAX_NAME_LEN 100
28 extern int parse_events_debug
;
30 int parse_events_parse(void *data
, void *scanner
);
32 static struct event_symbol event_symbols_hw
[PERF_COUNT_HW_MAX
] = {
33 [PERF_COUNT_HW_CPU_CYCLES
] = {
34 .symbol
= "cpu-cycles",
37 [PERF_COUNT_HW_INSTRUCTIONS
] = {
38 .symbol
= "instructions",
41 [PERF_COUNT_HW_CACHE_REFERENCES
] = {
42 .symbol
= "cache-references",
45 [PERF_COUNT_HW_CACHE_MISSES
] = {
46 .symbol
= "cache-misses",
49 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS
] = {
50 .symbol
= "branch-instructions",
53 [PERF_COUNT_HW_BRANCH_MISSES
] = {
54 .symbol
= "branch-misses",
57 [PERF_COUNT_HW_BUS_CYCLES
] = {
58 .symbol
= "bus-cycles",
61 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND
] = {
62 .symbol
= "stalled-cycles-frontend",
63 .alias
= "idle-cycles-frontend",
65 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND
] = {
66 .symbol
= "stalled-cycles-backend",
67 .alias
= "idle-cycles-backend",
69 [PERF_COUNT_HW_REF_CPU_CYCLES
] = {
70 .symbol
= "ref-cycles",
75 static struct event_symbol event_symbols_sw
[PERF_COUNT_SW_MAX
] = {
76 [PERF_COUNT_SW_CPU_CLOCK
] = {
77 .symbol
= "cpu-clock",
80 [PERF_COUNT_SW_TASK_CLOCK
] = {
81 .symbol
= "task-clock",
84 [PERF_COUNT_SW_PAGE_FAULTS
] = {
85 .symbol
= "page-faults",
88 [PERF_COUNT_SW_CONTEXT_SWITCHES
] = {
89 .symbol
= "context-switches",
92 [PERF_COUNT_SW_CPU_MIGRATIONS
] = {
93 .symbol
= "cpu-migrations",
94 .alias
= "migrations",
96 [PERF_COUNT_SW_PAGE_FAULTS_MIN
] = {
97 .symbol
= "minor-faults",
100 [PERF_COUNT_SW_PAGE_FAULTS_MAJ
] = {
101 .symbol
= "major-faults",
104 [PERF_COUNT_SW_ALIGNMENT_FAULTS
] = {
105 .symbol
= "alignment-faults",
108 [PERF_COUNT_SW_EMULATION_FAULTS
] = {
109 .symbol
= "emulation-faults",
112 [PERF_COUNT_SW_DUMMY
] = {
118 #define __PERF_EVENT_FIELD(config, name) \
119 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
121 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
122 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
123 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
124 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
126 #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
127 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
128 if (sys_dirent.d_type == DT_DIR && \
129 (strcmp(sys_dirent.d_name, ".")) && \
130 (strcmp(sys_dirent.d_name, "..")))
132 static int tp_event_has_id(struct dirent
*sys_dir
, struct dirent
*evt_dir
)
134 char evt_path
[MAXPATHLEN
];
137 snprintf(evt_path
, MAXPATHLEN
, "%s/%s/%s/id", tracing_events_path
,
138 sys_dir
->d_name
, evt_dir
->d_name
);
139 fd
= open(evt_path
, O_RDONLY
);
147 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
148 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
149 if (evt_dirent.d_type == DT_DIR && \
150 (strcmp(evt_dirent.d_name, ".")) && \
151 (strcmp(evt_dirent.d_name, "..")) && \
152 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
154 #define MAX_EVENT_LENGTH 512
157 struct tracepoint_path
*tracepoint_id_to_path(u64 config
)
159 struct tracepoint_path
*path
= NULL
;
160 DIR *sys_dir
, *evt_dir
;
161 struct dirent
*sys_next
, *evt_next
, sys_dirent
, evt_dirent
;
165 char evt_path
[MAXPATHLEN
];
166 char dir_path
[MAXPATHLEN
];
168 if (debugfs_valid_mountpoint(tracing_events_path
))
171 sys_dir
= opendir(tracing_events_path
);
175 for_each_subsystem(sys_dir
, sys_dirent
, sys_next
) {
177 snprintf(dir_path
, MAXPATHLEN
, "%s/%s", tracing_events_path
,
179 evt_dir
= opendir(dir_path
);
183 for_each_event(sys_dirent
, evt_dir
, evt_dirent
, evt_next
) {
185 snprintf(evt_path
, MAXPATHLEN
, "%s/%s/id", dir_path
,
187 fd
= open(evt_path
, O_RDONLY
);
190 if (read(fd
, id_buf
, sizeof(id_buf
)) < 0) {
199 path
= zalloc(sizeof(*path
));
200 path
->system
= malloc(MAX_EVENT_LENGTH
);
205 path
->name
= malloc(MAX_EVENT_LENGTH
);
211 strncpy(path
->system
, sys_dirent
.d_name
,
213 strncpy(path
->name
, evt_dirent
.d_name
,
225 struct tracepoint_path
*tracepoint_name_to_path(const char *name
)
227 struct tracepoint_path
*path
= zalloc(sizeof(*path
));
228 char *str
= strchr(name
, ':');
230 if (path
== NULL
|| str
== NULL
) {
235 path
->system
= strndup(name
, str
- name
);
236 path
->name
= strdup(str
+1);
238 if (path
->system
== NULL
|| path
->name
== NULL
) {
248 const char *event_type(int type
)
251 case PERF_TYPE_HARDWARE
:
254 case PERF_TYPE_SOFTWARE
:
257 case PERF_TYPE_TRACEPOINT
:
260 case PERF_TYPE_HW_CACHE
:
261 return "hardware-cache";
272 static int __add_event(struct list_head
*list
, int *idx
,
273 struct perf_event_attr
*attr
,
274 char *name
, struct cpu_map
*cpus
)
276 struct perf_evsel
*evsel
;
278 event_attr_init(attr
);
280 evsel
= perf_evsel__new(attr
, (*idx
)++);
286 evsel
->name
= strdup(name
);
287 list_add_tail(&evsel
->node
, list
);
291 static int add_event(struct list_head
*list
, int *idx
,
292 struct perf_event_attr
*attr
, char *name
)
294 return __add_event(list
, idx
, attr
, name
, NULL
);
297 static int parse_aliases(char *str
, const char *names
[][PERF_EVSEL__MAX_ALIASES
], int size
)
302 for (i
= 0; i
< size
; i
++) {
303 for (j
= 0; j
< PERF_EVSEL__MAX_ALIASES
&& names
[i
][j
]; j
++) {
304 n
= strlen(names
[i
][j
]);
305 if (n
> longest
&& !strncasecmp(str
, names
[i
][j
], n
))
315 int parse_events_add_cache(struct list_head
*list
, int *idx
,
316 char *type
, char *op_result1
, char *op_result2
)
318 struct perf_event_attr attr
;
319 char name
[MAX_NAME_LEN
];
320 int cache_type
= -1, cache_op
= -1, cache_result
= -1;
321 char *op_result
[2] = { op_result1
, op_result2
};
325 * No fallback - if we cannot get a clear cache type
328 cache_type
= parse_aliases(type
, perf_evsel__hw_cache
,
329 PERF_COUNT_HW_CACHE_MAX
);
330 if (cache_type
== -1)
333 n
= snprintf(name
, MAX_NAME_LEN
, "%s", type
);
335 for (i
= 0; (i
< 2) && (op_result
[i
]); i
++) {
336 char *str
= op_result
[i
];
338 n
+= snprintf(name
+ n
, MAX_NAME_LEN
- n
, "-%s", str
);
340 if (cache_op
== -1) {
341 cache_op
= parse_aliases(str
, perf_evsel__hw_cache_op
,
342 PERF_COUNT_HW_CACHE_OP_MAX
);
344 if (!perf_evsel__is_cache_op_valid(cache_type
, cache_op
))
350 if (cache_result
== -1) {
351 cache_result
= parse_aliases(str
, perf_evsel__hw_cache_result
,
352 PERF_COUNT_HW_CACHE_RESULT_MAX
);
353 if (cache_result
>= 0)
359 * Fall back to reads:
362 cache_op
= PERF_COUNT_HW_CACHE_OP_READ
;
365 * Fall back to accesses:
367 if (cache_result
== -1)
368 cache_result
= PERF_COUNT_HW_CACHE_RESULT_ACCESS
;
370 memset(&attr
, 0, sizeof(attr
));
371 attr
.config
= cache_type
| (cache_op
<< 8) | (cache_result
<< 16);
372 attr
.type
= PERF_TYPE_HW_CACHE
;
373 return add_event(list
, idx
, &attr
, name
);
376 static int add_tracepoint(struct list_head
*list
, int *idx
,
377 char *sys_name
, char *evt_name
)
379 struct perf_evsel
*evsel
;
381 evsel
= perf_evsel__newtp(sys_name
, evt_name
, (*idx
)++);
385 list_add_tail(&evsel
->node
, list
);
390 static int add_tracepoint_multi_event(struct list_head
*list
, int *idx
,
391 char *sys_name
, char *evt_name
)
393 char evt_path
[MAXPATHLEN
];
394 struct dirent
*evt_ent
;
398 snprintf(evt_path
, MAXPATHLEN
, "%s/%s", tracing_events_path
, sys_name
);
399 evt_dir
= opendir(evt_path
);
401 perror("Can't open event dir");
405 while (!ret
&& (evt_ent
= readdir(evt_dir
))) {
406 if (!strcmp(evt_ent
->d_name
, ".")
407 || !strcmp(evt_ent
->d_name
, "..")
408 || !strcmp(evt_ent
->d_name
, "enable")
409 || !strcmp(evt_ent
->d_name
, "filter"))
412 if (!strglobmatch(evt_ent
->d_name
, evt_name
))
415 ret
= add_tracepoint(list
, idx
, sys_name
, evt_ent
->d_name
);
422 static int add_tracepoint_event(struct list_head
*list
, int *idx
,
423 char *sys_name
, char *evt_name
)
425 return strpbrk(evt_name
, "*?") ?
426 add_tracepoint_multi_event(list
, idx
, sys_name
, evt_name
) :
427 add_tracepoint(list
, idx
, sys_name
, evt_name
);
430 static int add_tracepoint_multi_sys(struct list_head
*list
, int *idx
,
431 char *sys_name
, char *evt_name
)
433 struct dirent
*events_ent
;
437 events_dir
= opendir(tracing_events_path
);
439 perror("Can't open event dir");
443 while (!ret
&& (events_ent
= readdir(events_dir
))) {
444 if (!strcmp(events_ent
->d_name
, ".")
445 || !strcmp(events_ent
->d_name
, "..")
446 || !strcmp(events_ent
->d_name
, "enable")
447 || !strcmp(events_ent
->d_name
, "header_event")
448 || !strcmp(events_ent
->d_name
, "header_page"))
451 if (!strglobmatch(events_ent
->d_name
, sys_name
))
454 ret
= add_tracepoint_event(list
, idx
, events_ent
->d_name
,
458 closedir(events_dir
);
462 int parse_events_add_tracepoint(struct list_head
*list
, int *idx
,
463 char *sys
, char *event
)
467 ret
= debugfs_valid_mountpoint(tracing_events_path
);
471 if (strpbrk(sys
, "*?"))
472 return add_tracepoint_multi_sys(list
, idx
, sys
, event
);
474 return add_tracepoint_event(list
, idx
, sys
, event
);
478 parse_breakpoint_type(const char *type
, struct perf_event_attr
*attr
)
482 for (i
= 0; i
< 3; i
++) {
483 if (!type
|| !type
[i
])
486 #define CHECK_SET_TYPE(bit) \
488 if (attr->bp_type & bit) \
491 attr->bp_type |= bit; \
496 CHECK_SET_TYPE(HW_BREAKPOINT_R
);
499 CHECK_SET_TYPE(HW_BREAKPOINT_W
);
502 CHECK_SET_TYPE(HW_BREAKPOINT_X
);
509 #undef CHECK_SET_TYPE
511 if (!attr
->bp_type
) /* Default */
512 attr
->bp_type
= HW_BREAKPOINT_R
| HW_BREAKPOINT_W
;
517 int parse_events_add_breakpoint(struct list_head
*list
, int *idx
,
518 void *ptr
, char *type
)
520 struct perf_event_attr attr
;
522 memset(&attr
, 0, sizeof(attr
));
523 attr
.bp_addr
= (unsigned long) ptr
;
525 if (parse_breakpoint_type(type
, &attr
))
529 * We should find a nice way to override the access length
530 * Provide some defaults for now
532 if (attr
.bp_type
== HW_BREAKPOINT_X
)
533 attr
.bp_len
= sizeof(long);
535 attr
.bp_len
= HW_BREAKPOINT_LEN_4
;
537 attr
.type
= PERF_TYPE_BREAKPOINT
;
538 attr
.sample_period
= 1;
540 return add_event(list
, idx
, &attr
, NULL
);
543 static int config_term(struct perf_event_attr
*attr
,
544 struct parse_events_term
*term
)
546 #define CHECK_TYPE_VAL(type) \
548 if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
552 switch (term
->type_term
) {
553 case PARSE_EVENTS__TERM_TYPE_CONFIG
:
555 attr
->config
= term
->val
.num
;
557 case PARSE_EVENTS__TERM_TYPE_CONFIG1
:
559 attr
->config1
= term
->val
.num
;
561 case PARSE_EVENTS__TERM_TYPE_CONFIG2
:
563 attr
->config2
= term
->val
.num
;
565 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD
:
567 attr
->sample_period
= term
->val
.num
;
569 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE
:
571 * TODO uncomment when the field is available
572 * attr->branch_sample_type = term->val.num;
575 case PARSE_EVENTS__TERM_TYPE_NAME
:
583 #undef CHECK_TYPE_VAL
586 static int config_attr(struct perf_event_attr
*attr
,
587 struct list_head
*head
, int fail
)
589 struct parse_events_term
*term
;
591 list_for_each_entry(term
, head
, list
)
592 if (config_term(attr
, term
) && fail
)
598 int parse_events_add_numeric(struct list_head
*list
, int *idx
,
599 u32 type
, u64 config
,
600 struct list_head
*head_config
)
602 struct perf_event_attr attr
;
604 memset(&attr
, 0, sizeof(attr
));
606 attr
.config
= config
;
609 config_attr(&attr
, head_config
, 1))
612 return add_event(list
, idx
, &attr
, NULL
);
615 static int parse_events__is_name_term(struct parse_events_term
*term
)
617 return term
->type_term
== PARSE_EVENTS__TERM_TYPE_NAME
;
620 static char *pmu_event_name(struct list_head
*head_terms
)
622 struct parse_events_term
*term
;
624 list_for_each_entry(term
, head_terms
, list
)
625 if (parse_events__is_name_term(term
))
626 return term
->val
.str
;
631 int parse_events_add_pmu(struct list_head
*list
, int *idx
,
632 char *name
, struct list_head
*head_config
)
634 struct perf_event_attr attr
;
635 struct perf_pmu
*pmu
;
637 pmu
= perf_pmu__find(name
);
641 memset(&attr
, 0, sizeof(attr
));
643 if (perf_pmu__check_alias(pmu
, head_config
))
647 * Configure hardcoded terms first, no need to check
648 * return value when called with fail == 0 ;)
650 config_attr(&attr
, head_config
, 0);
652 if (perf_pmu__config(pmu
, &attr
, head_config
))
655 return __add_event(list
, idx
, &attr
, pmu_event_name(head_config
),
659 int parse_events__modifier_group(struct list_head
*list
,
662 return parse_events__modifier_event(list
, event_mod
, true);
665 void parse_events__set_leader(char *name
, struct list_head
*list
)
667 struct perf_evsel
*leader
;
669 __perf_evlist__set_leader(list
);
670 leader
= list_entry(list
->next
, struct perf_evsel
, node
);
671 leader
->group_name
= name
? strdup(name
) : NULL
;
674 /* list_event is assumed to point to malloc'ed memory */
675 void parse_events_update_lists(struct list_head
*list_event
,
676 struct list_head
*list_all
)
679 * Called for single event definition. Update the
680 * 'all event' list, and reinit the 'single event'
681 * list, for next event definition.
683 list_splice_tail(list_event
, list_all
);
687 struct event_modifier
{
699 static int get_event_modifier(struct event_modifier
*mod
, char *str
,
700 struct perf_evsel
*evsel
)
702 int eu
= evsel
? evsel
->attr
.exclude_user
: 0;
703 int ek
= evsel
? evsel
->attr
.exclude_kernel
: 0;
704 int eh
= evsel
? evsel
->attr
.exclude_hv
: 0;
705 int eH
= evsel
? evsel
->attr
.exclude_host
: 0;
706 int eG
= evsel
? evsel
->attr
.exclude_guest
: 0;
707 int precise
= evsel
? evsel
->attr
.precise_ip
: 0;
709 int pinned
= evsel
? evsel
->attr
.pinned
: 0;
711 int exclude
= eu
| ek
| eh
;
712 int exclude_GH
= evsel
? evsel
->exclude_GH
: 0;
714 memset(mod
, 0, sizeof(*mod
));
719 exclude
= eu
= ek
= eh
= 1;
721 } else if (*str
== 'k') {
723 exclude
= eu
= ek
= eh
= 1;
725 } else if (*str
== 'h') {
727 exclude
= eu
= ek
= eh
= 1;
729 } else if (*str
== 'G') {
731 exclude_GH
= eG
= eH
= 1;
733 } else if (*str
== 'H') {
735 exclude_GH
= eG
= eH
= 1;
737 } else if (*str
== 'p') {
739 /* use of precise requires exclude_guest */
742 } else if (*str
== 'S') {
744 } else if (*str
== 'D') {
755 * 0 - SAMPLE_IP can have arbitrary skid
756 * 1 - SAMPLE_IP must have constant skid
757 * 2 - SAMPLE_IP requested to have 0 skid
758 * 3 - SAMPLE_IP must have 0 skid
760 * See also PERF_RECORD_MISC_EXACT_IP
770 mod
->precise
= precise
;
771 mod
->exclude_GH
= exclude_GH
;
772 mod
->sample_read
= sample_read
;
773 mod
->pinned
= pinned
;
779 * Basic modifier sanity check to validate it contains only one
780 * instance of any modifier (apart from 'p') present.
782 static int check_modifier(char *str
)
786 /* The sizeof includes 0 byte as well. */
787 if (strlen(str
) > (sizeof("ukhGHpppSD") - 1))
791 if (*p
!= 'p' && strchr(p
+ 1, *p
))
799 int parse_events__modifier_event(struct list_head
*list
, char *str
, bool add
)
801 struct perf_evsel
*evsel
;
802 struct event_modifier mod
;
807 if (check_modifier(str
))
810 if (!add
&& get_event_modifier(&mod
, str
, NULL
))
813 list_for_each_entry(evsel
, list
, node
) {
815 if (add
&& get_event_modifier(&mod
, str
, evsel
))
818 evsel
->attr
.exclude_user
= mod
.eu
;
819 evsel
->attr
.exclude_kernel
= mod
.ek
;
820 evsel
->attr
.exclude_hv
= mod
.eh
;
821 evsel
->attr
.precise_ip
= mod
.precise
;
822 evsel
->attr
.exclude_host
= mod
.eH
;
823 evsel
->attr
.exclude_guest
= mod
.eG
;
824 evsel
->exclude_GH
= mod
.exclude_GH
;
825 evsel
->sample_read
= mod
.sample_read
;
827 if (perf_evsel__is_group_leader(evsel
))
828 evsel
->attr
.pinned
= mod
.pinned
;
834 int parse_events_name(struct list_head
*list
, char *name
)
836 struct perf_evsel
*evsel
;
838 list_for_each_entry(evsel
, list
, node
) {
840 evsel
->name
= strdup(name
);
846 static int parse_events__scanner(const char *str
, void *data
, int start_token
);
848 static int parse_events_fixup(int ret
, const char *str
, void *data
,
851 char *o
= strdup(str
);
859 while ((p
= strsep(&t
, ",")) != NULL
) {
861 str_append(&s
, &len
, ",");
862 str_append(&s
, &len
, "cpu/");
863 str_append(&s
, &len
, p
);
864 str_append(&s
, &len
, "/");
869 return parse_events__scanner(s
, data
, start_token
);
872 static int parse_events__scanner(const char *str
, void *data
, int start_token
)
874 YY_BUFFER_STATE buffer
;
878 ret
= parse_events_lex_init_extra(start_token
, &scanner
);
882 buffer
= parse_events__scan_string(str
, scanner
);
885 parse_events_debug
= 1;
887 ret
= parse_events_parse(data
, scanner
);
889 parse_events__flush_buffer(buffer
, scanner
);
890 parse_events__delete_buffer(buffer
, scanner
);
891 parse_events_lex_destroy(scanner
);
892 if (ret
&& !strchr(str
, '/'))
893 ret
= parse_events_fixup(ret
, str
, data
, start_token
);
898 * parse event config string, return a list of event terms.
900 int parse_events_terms(struct list_head
*terms
, const char *str
)
902 struct parse_events_terms data
= {
907 ret
= parse_events__scanner(str
, &data
, PE_START_TERMS
);
909 list_splice(data
.terms
, terms
);
915 parse_events__free_terms(data
.terms
);
919 int parse_events(struct perf_evlist
*evlist
, const char *str
)
921 struct parse_events_evlist data
= {
922 .list
= LIST_HEAD_INIT(data
.list
),
923 .idx
= evlist
->nr_entries
,
927 ret
= parse_events__scanner(str
, &data
, PE_START_EVENTS
);
929 int entries
= data
.idx
- evlist
->nr_entries
;
930 perf_evlist__splice_list_tail(evlist
, &data
.list
, entries
);
931 evlist
->nr_groups
+= data
.nr_groups
;
936 * There are 2 users - builtin-record and builtin-test objects.
937 * Both call perf_evlist__delete in case of error, so we dont
943 int parse_events_option(const struct option
*opt
, const char *str
,
944 int unset __maybe_unused
)
946 struct perf_evlist
*evlist
= *(struct perf_evlist
**)opt
->value
;
947 int ret
= parse_events(evlist
, str
);
950 fprintf(stderr
, "invalid or unsupported event: '%s'\n", str
);
951 fprintf(stderr
, "Run 'perf list' for a list of valid events\n");
956 int parse_filter(const struct option
*opt
, const char *str
,
957 int unset __maybe_unused
)
959 struct perf_evlist
*evlist
= *(struct perf_evlist
**)opt
->value
;
960 struct perf_evsel
*last
= NULL
;
962 if (evlist
->nr_entries
> 0)
963 last
= perf_evlist__last(evlist
);
965 if (last
== NULL
|| last
->attr
.type
!= PERF_TYPE_TRACEPOINT
) {
967 "-F option should follow a -e tracepoint option\n");
971 last
->filter
= strdup(str
);
972 if (last
->filter
== NULL
) {
973 fprintf(stderr
, "not enough memory to hold filter string\n");
980 static const char * const event_type_descriptors
[] = {
984 "Hardware cache event",
985 "Raw hardware event descriptor",
986 "Hardware breakpoint",
990 * Print the events from <debugfs_mount_point>/tracing/events
993 void print_tracepoint_events(const char *subsys_glob
, const char *event_glob
,
996 DIR *sys_dir
, *evt_dir
;
997 struct dirent
*sys_next
, *evt_next
, sys_dirent
, evt_dirent
;
998 char evt_path
[MAXPATHLEN
];
999 char dir_path
[MAXPATHLEN
];
1001 if (debugfs_valid_mountpoint(tracing_events_path
))
1004 sys_dir
= opendir(tracing_events_path
);
1008 for_each_subsystem(sys_dir
, sys_dirent
, sys_next
) {
1009 if (subsys_glob
!= NULL
&&
1010 !strglobmatch(sys_dirent
.d_name
, subsys_glob
))
1013 snprintf(dir_path
, MAXPATHLEN
, "%s/%s", tracing_events_path
,
1015 evt_dir
= opendir(dir_path
);
1019 for_each_event(sys_dirent
, evt_dir
, evt_dirent
, evt_next
) {
1020 if (event_glob
!= NULL
&&
1021 !strglobmatch(evt_dirent
.d_name
, event_glob
))
1025 printf("%s:%s ", sys_dirent
.d_name
, evt_dirent
.d_name
);
1029 snprintf(evt_path
, MAXPATHLEN
, "%s:%s",
1030 sys_dirent
.d_name
, evt_dirent
.d_name
);
1031 printf(" %-50s [%s]\n", evt_path
,
1032 event_type_descriptors
[PERF_TYPE_TRACEPOINT
]);
1040 * Check whether event is in <debugfs_mount_point>/tracing/events
1043 int is_valid_tracepoint(const char *event_string
)
1045 DIR *sys_dir
, *evt_dir
;
1046 struct dirent
*sys_next
, *evt_next
, sys_dirent
, evt_dirent
;
1047 char evt_path
[MAXPATHLEN
];
1048 char dir_path
[MAXPATHLEN
];
1050 if (debugfs_valid_mountpoint(tracing_events_path
))
1053 sys_dir
= opendir(tracing_events_path
);
1057 for_each_subsystem(sys_dir
, sys_dirent
, sys_next
) {
1059 snprintf(dir_path
, MAXPATHLEN
, "%s/%s", tracing_events_path
,
1061 evt_dir
= opendir(dir_path
);
1065 for_each_event(sys_dirent
, evt_dir
, evt_dirent
, evt_next
) {
1066 snprintf(evt_path
, MAXPATHLEN
, "%s:%s",
1067 sys_dirent
.d_name
, evt_dirent
.d_name
);
1068 if (!strcmp(evt_path
, event_string
)) {
1080 static bool is_event_supported(u8 type
, unsigned config
)
1083 struct perf_evsel
*evsel
;
1084 struct perf_event_attr attr
= {
1088 .exclude_kernel
= 1,
1091 struct thread_map map
;
1098 evsel
= perf_evsel__new(&attr
, 0);
1100 ret
= perf_evsel__open(evsel
, NULL
, &tmap
.map
) >= 0;
1101 perf_evsel__delete(evsel
);
1107 static void __print_events_type(u8 type
, struct event_symbol
*syms
,
1113 for (i
= 0; i
< max
; i
++, syms
++) {
1114 if (!is_event_supported(type
, i
))
1117 if (strlen(syms
->alias
))
1118 snprintf(name
, sizeof(name
), "%s OR %s",
1119 syms
->symbol
, syms
->alias
);
1121 snprintf(name
, sizeof(name
), "%s", syms
->symbol
);
1123 printf(" %-50s [%s]\n", name
, event_type_descriptors
[type
]);
1127 void print_events_type(u8 type
)
1129 if (type
== PERF_TYPE_SOFTWARE
)
1130 __print_events_type(type
, event_symbols_sw
, PERF_COUNT_SW_MAX
);
1132 __print_events_type(type
, event_symbols_hw
, PERF_COUNT_HW_MAX
);
1135 int print_hwcache_events(const char *event_glob
, bool name_only
)
1137 unsigned int type
, op
, i
, printed
= 0;
1140 for (type
= 0; type
< PERF_COUNT_HW_CACHE_MAX
; type
++) {
1141 for (op
= 0; op
< PERF_COUNT_HW_CACHE_OP_MAX
; op
++) {
1142 /* skip invalid cache type */
1143 if (!perf_evsel__is_cache_op_valid(type
, op
))
1146 for (i
= 0; i
< PERF_COUNT_HW_CACHE_RESULT_MAX
; i
++) {
1147 __perf_evsel__hw_cache_type_op_res_name(type
, op
, i
,
1148 name
, sizeof(name
));
1149 if (event_glob
!= NULL
&& !strglobmatch(name
, event_glob
))
1152 if (!is_event_supported(PERF_TYPE_HW_CACHE
,
1153 type
| (op
<< 8) | (i
<< 16)))
1157 printf("%s ", name
);
1159 printf(" %-50s [%s]\n", name
,
1160 event_type_descriptors
[PERF_TYPE_HW_CACHE
]);
1171 static void print_symbol_events(const char *event_glob
, unsigned type
,
1172 struct event_symbol
*syms
, unsigned max
,
1175 unsigned i
, printed
= 0;
1176 char name
[MAX_NAME_LEN
];
1178 for (i
= 0; i
< max
; i
++, syms
++) {
1180 if (event_glob
!= NULL
&&
1181 !(strglobmatch(syms
->symbol
, event_glob
) ||
1182 (syms
->alias
&& strglobmatch(syms
->alias
, event_glob
))))
1185 if (!is_event_supported(type
, i
))
1189 printf("%s ", syms
->symbol
);
1193 if (strlen(syms
->alias
))
1194 snprintf(name
, MAX_NAME_LEN
, "%s OR %s", syms
->symbol
, syms
->alias
);
1196 strncpy(name
, syms
->symbol
, MAX_NAME_LEN
);
1198 printf(" %-50s [%s]\n", name
, event_type_descriptors
[type
]);
1208 * Print the help text for the event symbols:
1210 void print_events(const char *event_glob
, bool name_only
)
1214 printf("List of pre-defined events (to be used in -e):\n");
1217 print_symbol_events(event_glob
, PERF_TYPE_HARDWARE
,
1218 event_symbols_hw
, PERF_COUNT_HW_MAX
, name_only
);
1220 print_symbol_events(event_glob
, PERF_TYPE_SOFTWARE
,
1221 event_symbols_sw
, PERF_COUNT_SW_MAX
, name_only
);
1223 print_hwcache_events(event_glob
, name_only
);
1225 print_pmu_events(event_glob
, name_only
);
1227 if (event_glob
!= NULL
)
1231 printf(" %-50s [%s]\n",
1233 event_type_descriptors
[PERF_TYPE_RAW
]);
1234 printf(" %-50s [%s]\n",
1235 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1236 event_type_descriptors
[PERF_TYPE_RAW
]);
1237 printf(" (see 'man perf-list' on how to encode it)\n");
1240 printf(" %-50s [%s]\n",
1241 "mem:<addr>[:access]",
1242 event_type_descriptors
[PERF_TYPE_BREAKPOINT
]);
1246 print_tracepoint_events(NULL
, NULL
, name_only
);
1249 int parse_events__is_hardcoded_term(struct parse_events_term
*term
)
1251 return term
->type_term
!= PARSE_EVENTS__TERM_TYPE_USER
;
1254 static int new_term(struct parse_events_term
**_term
, int type_val
,
1255 int type_term
, char *config
,
1258 struct parse_events_term
*term
;
1260 term
= zalloc(sizeof(*term
));
1264 INIT_LIST_HEAD(&term
->list
);
1265 term
->type_val
= type_val
;
1266 term
->type_term
= type_term
;
1267 term
->config
= config
;
1270 case PARSE_EVENTS__TERM_TYPE_NUM
:
1271 term
->val
.num
= num
;
1273 case PARSE_EVENTS__TERM_TYPE_STR
:
1274 term
->val
.str
= str
;
1285 int parse_events_term__num(struct parse_events_term
**term
,
1286 int type_term
, char *config
, u64 num
)
1288 return new_term(term
, PARSE_EVENTS__TERM_TYPE_NUM
, type_term
,
1292 int parse_events_term__str(struct parse_events_term
**term
,
1293 int type_term
, char *config
, char *str
)
1295 return new_term(term
, PARSE_EVENTS__TERM_TYPE_STR
, type_term
,
1299 int parse_events_term__sym_hw(struct parse_events_term
**term
,
1300 char *config
, unsigned idx
)
1302 struct event_symbol
*sym
;
1304 BUG_ON(idx
>= PERF_COUNT_HW_MAX
);
1305 sym
= &event_symbols_hw
[idx
];
1308 return new_term(term
, PARSE_EVENTS__TERM_TYPE_STR
,
1309 PARSE_EVENTS__TERM_TYPE_USER
, config
,
1310 (char *) sym
->symbol
, 0);
1312 return new_term(term
, PARSE_EVENTS__TERM_TYPE_STR
,
1313 PARSE_EVENTS__TERM_TYPE_USER
,
1314 (char *) "event", (char *) sym
->symbol
, 0);
1317 int parse_events_term__clone(struct parse_events_term
**new,
1318 struct parse_events_term
*term
)
1320 return new_term(new, term
->type_val
, term
->type_term
, term
->config
,
1321 term
->val
.str
, term
->val
.num
);
1324 void parse_events__free_terms(struct list_head
*terms
)
1326 struct parse_events_term
*term
, *h
;
1328 list_for_each_entry_safe(term
, h
, terms
, list
)