1
2#include <linux/hw_breakpoint.h>
3#include <linux/err.h>
4#include <linux/zalloc.h>
5#include <dirent.h>
6#include <errno.h>
7#include <sys/ioctl.h>
8#include <sys/types.h>
9#include <sys/stat.h>
10#include <fcntl.h>
11#include <sys/param.h>
12#include "term.h"
13#include "../perf.h"
14#include "evlist.h"
15#include "evsel.h"
16#include <subcmd/parse-options.h>
17#include "parse-events.h"
18#include <subcmd/exec-cmd.h>
19#include "string2.h"
20#include "strlist.h"
21#include "symbol.h"
22#include "cache.h"
23#include "header.h"
24#include "bpf-loader.h"
25#include "debug.h"
26#include <api/fs/tracing_path.h>
27#include "parse-events-bison.h"
28#define YY_EXTRA_TYPE int
29#include "parse-events-flex.h"
30#include "pmu.h"
31#include "thread_map.h"
32#include "cpumap.h"
33#include "probe-file.h"
34#include "asm/bug.h"
35#include "util/parse-branch-options.h"
36#include "metricgroup.h"
37
38#define MAX_NAME_LEN 100
39
40#ifdef PARSER_DEBUG
41extern int parse_events_debug;
42#endif
43int parse_events_parse(void *parse_state, void *scanner);
44static int get_config_terms(struct list_head *head_config,
45 struct list_head *head_terms __maybe_unused);
46
47static struct perf_pmu_event_symbol *perf_pmu_events_list;
48
49
50
51
52
53
54static int perf_pmu_events_list_num;
55
56struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
57 [PERF_COUNT_HW_CPU_CYCLES] = {
58 .symbol = "cpu-cycles",
59 .alias = "cycles",
60 },
61 [PERF_COUNT_HW_INSTRUCTIONS] = {
62 .symbol = "instructions",
63 .alias = "",
64 },
65 [PERF_COUNT_HW_CACHE_REFERENCES] = {
66 .symbol = "cache-references",
67 .alias = "",
68 },
69 [PERF_COUNT_HW_CACHE_MISSES] = {
70 .symbol = "cache-misses",
71 .alias = "",
72 },
73 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
74 .symbol = "branch-instructions",
75 .alias = "branches",
76 },
77 [PERF_COUNT_HW_BRANCH_MISSES] = {
78 .symbol = "branch-misses",
79 .alias = "",
80 },
81 [PERF_COUNT_HW_BUS_CYCLES] = {
82 .symbol = "bus-cycles",
83 .alias = "",
84 },
85 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
86 .symbol = "stalled-cycles-frontend",
87 .alias = "idle-cycles-frontend",
88 },
89 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
90 .symbol = "stalled-cycles-backend",
91 .alias = "idle-cycles-backend",
92 },
93 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
94 .symbol = "ref-cycles",
95 .alias = "",
96 },
97};
98
99struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
100 [PERF_COUNT_SW_CPU_CLOCK] = {
101 .symbol = "cpu-clock",
102 .alias = "",
103 },
104 [PERF_COUNT_SW_TASK_CLOCK] = {
105 .symbol = "task-clock",
106 .alias = "",
107 },
108 [PERF_COUNT_SW_PAGE_FAULTS] = {
109 .symbol = "page-faults",
110 .alias = "faults",
111 },
112 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
113 .symbol = "context-switches",
114 .alias = "cs",
115 },
116 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
117 .symbol = "cpu-migrations",
118 .alias = "migrations",
119 },
120 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
121 .symbol = "minor-faults",
122 .alias = "",
123 },
124 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
125 .symbol = "major-faults",
126 .alias = "",
127 },
128 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
129 .symbol = "alignment-faults",
130 .alias = "",
131 },
132 [PERF_COUNT_SW_EMULATION_FAULTS] = {
133 .symbol = "emulation-faults",
134 .alias = "",
135 },
136 [PERF_COUNT_SW_DUMMY] = {
137 .symbol = "dummy",
138 .alias = "",
139 },
140 [PERF_COUNT_SW_BPF_OUTPUT] = {
141 .symbol = "bpf-output",
142 .alias = "",
143 },
144};
145
146#define __PERF_EVENT_FIELD(config, name) \
147 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
148
149#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
150#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
151#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
152#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
153
154#define for_each_subsystem(sys_dir, sys_dirent) \
155 while ((sys_dirent = readdir(sys_dir)) != NULL) \
156 if (sys_dirent->d_type == DT_DIR && \
157 (strcmp(sys_dirent->d_name, ".")) && \
158 (strcmp(sys_dirent->d_name, "..")))
159
160static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir)
161{
162 char evt_path[MAXPATHLEN];
163 int fd;
164
165 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name);
166 fd = open(evt_path, O_RDONLY);
167 if (fd < 0)
168 return -EINVAL;
169 close(fd);
170
171 return 0;
172}
173
174#define for_each_event(dir_path, evt_dir, evt_dirent) \
175 while ((evt_dirent = readdir(evt_dir)) != NULL) \
176 if (evt_dirent->d_type == DT_DIR && \
177 (strcmp(evt_dirent->d_name, ".")) && \
178 (strcmp(evt_dirent->d_name, "..")) && \
179 (!tp_event_has_id(dir_path, evt_dirent)))
180
181#define MAX_EVENT_LENGTH 512
182
183
184struct tracepoint_path *tracepoint_id_to_path(u64 config)
185{
186 struct tracepoint_path *path = NULL;
187 DIR *sys_dir, *evt_dir;
188 struct dirent *sys_dirent, *evt_dirent;
189 char id_buf[24];
190 int fd;
191 u64 id;
192 char evt_path[MAXPATHLEN];
193 char *dir_path;
194
195 sys_dir = tracing_events__opendir();
196 if (!sys_dir)
197 return NULL;
198
199 for_each_subsystem(sys_dir, sys_dirent) {
200 dir_path = get_events_file(sys_dirent->d_name);
201 if (!dir_path)
202 continue;
203 evt_dir = opendir(dir_path);
204 if (!evt_dir)
205 goto next;
206
207 for_each_event(dir_path, evt_dir, evt_dirent) {
208
209 scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
210 evt_dirent->d_name);
211 fd = open(evt_path, O_RDONLY);
212 if (fd < 0)
213 continue;
214 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
215 close(fd);
216 continue;
217 }
218 close(fd);
219 id = atoll(id_buf);
220 if (id == config) {
221 put_events_file(dir_path);
222 closedir(evt_dir);
223 closedir(sys_dir);
224 path = zalloc(sizeof(*path));
225 if (!path)
226 return NULL;
227 path->system = malloc(MAX_EVENT_LENGTH);
228 if (!path->system) {
229 free(path);
230 return NULL;
231 }
232 path->name = malloc(MAX_EVENT_LENGTH);
233 if (!path->name) {
234 zfree(&path->system);
235 free(path);
236 return NULL;
237 }
238 strncpy(path->system, sys_dirent->d_name,
239 MAX_EVENT_LENGTH);
240 strncpy(path->name, evt_dirent->d_name,
241 MAX_EVENT_LENGTH);
242 return path;
243 }
244 }
245 closedir(evt_dir);
246next:
247 put_events_file(dir_path);
248 }
249
250 closedir(sys_dir);
251 return NULL;
252}
253
254struct tracepoint_path *tracepoint_name_to_path(const char *name)
255{
256 struct tracepoint_path *path = zalloc(sizeof(*path));
257 char *str = strchr(name, ':');
258
259 if (path == NULL || str == NULL) {
260 free(path);
261 return NULL;
262 }
263
264 path->system = strndup(name, str - name);
265 path->name = strdup(str+1);
266
267 if (path->system == NULL || path->name == NULL) {
268 zfree(&path->system);
269 zfree(&path->name);
270 zfree(&path);
271 }
272
273 return path;
274}
275
276const char *event_type(int type)
277{
278 switch (type) {
279 case PERF_TYPE_HARDWARE:
280 return "hardware";
281
282 case PERF_TYPE_SOFTWARE:
283 return "software";
284
285 case PERF_TYPE_TRACEPOINT:
286 return "tracepoint";
287
288 case PERF_TYPE_HW_CACHE:
289 return "hardware-cache";
290
291 default:
292 break;
293 }
294
295 return "unknown";
296}
297
298static int parse_events__is_name_term(struct parse_events_term *term)
299{
300 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
301}
302
303static char *get_config_name(struct list_head *head_terms)
304{
305 struct parse_events_term *term;
306
307 if (!head_terms)
308 return NULL;
309
310 list_for_each_entry(term, head_terms, list)
311 if (parse_events__is_name_term(term))
312 return term->val.str;
313
314 return NULL;
315}
316
317static struct perf_evsel *
318__add_event(struct list_head *list, int *idx,
319 struct perf_event_attr *attr,
320 char *name, struct perf_pmu *pmu,
321 struct list_head *config_terms, bool auto_merge_stats,
322 const char *cpu_list)
323{
324 struct perf_evsel *evsel;
325 struct cpu_map *cpus = pmu ? pmu->cpus :
326 cpu_list ? cpu_map__new(cpu_list) : NULL;
327
328 event_attr_init(attr);
329
330 evsel = perf_evsel__new_idx(attr, *idx);
331 if (!evsel)
332 return NULL;
333
334 (*idx)++;
335 evsel->cpus = cpu_map__get(cpus);
336 evsel->own_cpus = cpu_map__get(cpus);
337 evsel->system_wide = pmu ? pmu->is_uncore : false;
338 evsel->auto_merge_stats = auto_merge_stats;
339
340 if (name)
341 evsel->name = strdup(name);
342
343 if (config_terms)
344 list_splice(config_terms, &evsel->config_terms);
345
346 list_add_tail(&evsel->node, list);
347 return evsel;
348}
349
350static int add_event(struct list_head *list, int *idx,
351 struct perf_event_attr *attr, char *name,
352 struct list_head *config_terms)
353{
354 return __add_event(list, idx, attr, name, NULL, config_terms, false, NULL) ? 0 : -ENOMEM;
355}
356
357static int add_event_tool(struct list_head *list, int *idx,
358 enum perf_tool_event tool_event)
359{
360 struct perf_evsel *evsel;
361 struct perf_event_attr attr = {
362 .type = PERF_TYPE_SOFTWARE,
363 .config = PERF_COUNT_SW_DUMMY,
364 };
365
366 evsel = __add_event(list, idx, &attr, NULL, NULL, NULL, false, "0");
367 if (!evsel)
368 return -ENOMEM;
369 evsel->tool_event = tool_event;
370 if (tool_event == PERF_TOOL_DURATION_TIME)
371 evsel->unit = strdup("ns");
372 return 0;
373}
374
375static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
376{
377 int i, j;
378 int n, longest = -1;
379
380 for (i = 0; i < size; i++) {
381 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
382 n = strlen(names[i][j]);
383 if (n > longest && !strncasecmp(str, names[i][j], n))
384 longest = n;
385 }
386 if (longest > 0)
387 return i;
388 }
389
390 return -1;
391}
392
393typedef int config_term_func_t(struct perf_event_attr *attr,
394 struct parse_events_term *term,
395 struct parse_events_error *err);
396static int config_term_common(struct perf_event_attr *attr,
397 struct parse_events_term *term,
398 struct parse_events_error *err);
399static int config_attr(struct perf_event_attr *attr,
400 struct list_head *head,
401 struct parse_events_error *err,
402 config_term_func_t config_term);
403
404int parse_events_add_cache(struct list_head *list, int *idx,
405 char *type, char *op_result1, char *op_result2,
406 struct parse_events_error *err,
407 struct list_head *head_config)
408{
409 struct perf_event_attr attr;
410 LIST_HEAD(config_terms);
411 char name[MAX_NAME_LEN], *config_name;
412 int cache_type = -1, cache_op = -1, cache_result = -1;
413 char *op_result[2] = { op_result1, op_result2 };
414 int i, n;
415
416
417
418
419
420 cache_type = parse_aliases(type, perf_evsel__hw_cache,
421 PERF_COUNT_HW_CACHE_MAX);
422 if (cache_type == -1)
423 return -EINVAL;
424
425 config_name = get_config_name(head_config);
426 n = snprintf(name, MAX_NAME_LEN, "%s", type);
427
428 for (i = 0; (i < 2) && (op_result[i]); i++) {
429 char *str = op_result[i];
430
431 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
432
433 if (cache_op == -1) {
434 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
435 PERF_COUNT_HW_CACHE_OP_MAX);
436 if (cache_op >= 0) {
437 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
438 return -EINVAL;
439 continue;
440 }
441 }
442
443 if (cache_result == -1) {
444 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
445 PERF_COUNT_HW_CACHE_RESULT_MAX);
446 if (cache_result >= 0)
447 continue;
448 }
449 }
450
451
452
453
454 if (cache_op == -1)
455 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
456
457
458
459
460 if (cache_result == -1)
461 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
462
463 memset(&attr, 0, sizeof(attr));
464 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
465 attr.type = PERF_TYPE_HW_CACHE;
466
467 if (head_config) {
468 if (config_attr(&attr, head_config, err,
469 config_term_common))
470 return -EINVAL;
471
472 if (get_config_terms(head_config, &config_terms))
473 return -ENOMEM;
474 }
475 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
476}
477
478static void tracepoint_error(struct parse_events_error *e, int err,
479 const char *sys, const char *name)
480{
481 char help[BUFSIZ];
482
483 if (!e)
484 return;
485
486
487
488
489
490 err = abs(err);
491
492 switch (err) {
493 case EACCES:
494 e->str = strdup("can't access trace events");
495 break;
496 case ENOENT:
497 e->str = strdup("unknown tracepoint");
498 break;
499 default:
500 e->str = strdup("failed to add tracepoint");
501 break;
502 }
503
504 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
505 e->help = strdup(help);
506}
507
508static int add_tracepoint(struct list_head *list, int *idx,
509 const char *sys_name, const char *evt_name,
510 struct parse_events_error *err,
511 struct list_head *head_config)
512{
513 struct perf_evsel *evsel;
514
515 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
516 if (IS_ERR(evsel)) {
517 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
518 return PTR_ERR(evsel);
519 }
520
521 if (head_config) {
522 LIST_HEAD(config_terms);
523
524 if (get_config_terms(head_config, &config_terms))
525 return -ENOMEM;
526 list_splice(&config_terms, &evsel->config_terms);
527 }
528
529 list_add_tail(&evsel->node, list);
530 return 0;
531}
532
533static int add_tracepoint_multi_event(struct list_head *list, int *idx,
534 const char *sys_name, const char *evt_name,
535 struct parse_events_error *err,
536 struct list_head *head_config)
537{
538 char *evt_path;
539 struct dirent *evt_ent;
540 DIR *evt_dir;
541 int ret = 0, found = 0;
542
543 evt_path = get_events_file(sys_name);
544 if (!evt_path) {
545 tracepoint_error(err, errno, sys_name, evt_name);
546 return -1;
547 }
548 evt_dir = opendir(evt_path);
549 if (!evt_dir) {
550 put_events_file(evt_path);
551 tracepoint_error(err, errno, sys_name, evt_name);
552 return -1;
553 }
554
555 while (!ret && (evt_ent = readdir(evt_dir))) {
556 if (!strcmp(evt_ent->d_name, ".")
557 || !strcmp(evt_ent->d_name, "..")
558 || !strcmp(evt_ent->d_name, "enable")
559 || !strcmp(evt_ent->d_name, "filter"))
560 continue;
561
562 if (!strglobmatch(evt_ent->d_name, evt_name))
563 continue;
564
565 found++;
566
567 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
568 err, head_config);
569 }
570
571 if (!found) {
572 tracepoint_error(err, ENOENT, sys_name, evt_name);
573 ret = -1;
574 }
575
576 put_events_file(evt_path);
577 closedir(evt_dir);
578 return ret;
579}
580
581static int add_tracepoint_event(struct list_head *list, int *idx,
582 const char *sys_name, const char *evt_name,
583 struct parse_events_error *err,
584 struct list_head *head_config)
585{
586 return strpbrk(evt_name, "*?") ?
587 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
588 err, head_config) :
589 add_tracepoint(list, idx, sys_name, evt_name,
590 err, head_config);
591}
592
593static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
594 const char *sys_name, const char *evt_name,
595 struct parse_events_error *err,
596 struct list_head *head_config)
597{
598 struct dirent *events_ent;
599 DIR *events_dir;
600 int ret = 0;
601
602 events_dir = tracing_events__opendir();
603 if (!events_dir) {
604 tracepoint_error(err, errno, sys_name, evt_name);
605 return -1;
606 }
607
608 while (!ret && (events_ent = readdir(events_dir))) {
609 if (!strcmp(events_ent->d_name, ".")
610 || !strcmp(events_ent->d_name, "..")
611 || !strcmp(events_ent->d_name, "enable")
612 || !strcmp(events_ent->d_name, "header_event")
613 || !strcmp(events_ent->d_name, "header_page"))
614 continue;
615
616 if (!strglobmatch(events_ent->d_name, sys_name))
617 continue;
618
619 ret = add_tracepoint_event(list, idx, events_ent->d_name,
620 evt_name, err, head_config);
621 }
622
623 closedir(events_dir);
624 return ret;
625}
626
627struct __add_bpf_event_param {
628 struct parse_events_state *parse_state;
629 struct list_head *list;
630 struct list_head *head_config;
631};
632
633static int add_bpf_event(const char *group, const char *event, int fd,
634 void *_param)
635{
636 LIST_HEAD(new_evsels);
637 struct __add_bpf_event_param *param = _param;
638 struct parse_events_state *parse_state = param->parse_state;
639 struct list_head *list = param->list;
640 struct perf_evsel *pos;
641 int err;
642
643 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
644 group, event, fd);
645
646 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group,
647 event, parse_state->error,
648 param->head_config);
649 if (err) {
650 struct perf_evsel *evsel, *tmp;
651
652 pr_debug("Failed to add BPF event %s:%s\n",
653 group, event);
654 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
655 list_del_init(&evsel->node);
656 perf_evsel__delete(evsel);
657 }
658 return err;
659 }
660 pr_debug("adding %s:%s\n", group, event);
661
662 list_for_each_entry(pos, &new_evsels, node) {
663 pr_debug("adding %s:%s to %p\n",
664 group, event, pos);
665 pos->bpf_fd = fd;
666 }
667 list_splice(&new_evsels, list);
668 return 0;
669}
670
671int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
672 struct list_head *list,
673 struct bpf_object *obj,
674 struct list_head *head_config)
675{
676 int err;
677 char errbuf[BUFSIZ];
678 struct __add_bpf_event_param param = {parse_state, list, head_config};
679 static bool registered_unprobe_atexit = false;
680
681 if (IS_ERR(obj) || !obj) {
682 snprintf(errbuf, sizeof(errbuf),
683 "Internal error: load bpf obj with NULL");
684 err = -EINVAL;
685 goto errout;
686 }
687
688
689
690
691
692
693 if (!registered_unprobe_atexit) {
694 atexit(bpf__clear);
695 registered_unprobe_atexit = true;
696 }
697
698 err = bpf__probe(obj);
699 if (err) {
700 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
701 goto errout;
702 }
703
704 err = bpf__load(obj);
705 if (err) {
706 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
707 goto errout;
708 }
709
710 err = bpf__foreach_event(obj, add_bpf_event, ¶m);
711 if (err) {
712 snprintf(errbuf, sizeof(errbuf),
713 "Attach events in BPF object failed");
714 goto errout;
715 }
716
717 return 0;
718errout:
719 parse_state->error->help = strdup("(add -v to see detail)");
720 parse_state->error->str = strdup(errbuf);
721 return err;
722}
723
724static int
725parse_events_config_bpf(struct parse_events_state *parse_state,
726 struct bpf_object *obj,
727 struct list_head *head_config)
728{
729 struct parse_events_term *term;
730 int error_pos;
731
732 if (!head_config || list_empty(head_config))
733 return 0;
734
735 list_for_each_entry(term, head_config, list) {
736 char errbuf[BUFSIZ];
737 int err;
738
739 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
740 snprintf(errbuf, sizeof(errbuf),
741 "Invalid config term for BPF object");
742 errbuf[BUFSIZ - 1] = '\0';
743
744 parse_state->error->idx = term->err_term;
745 parse_state->error->str = strdup(errbuf);
746 return -EINVAL;
747 }
748
749 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
750 if (err) {
751 bpf__strerror_config_obj(obj, term, parse_state->evlist,
752 &error_pos, err, errbuf,
753 sizeof(errbuf));
754 parse_state->error->help = strdup(
755"Hint:\tValid config terms:\n"
756" \tmap:[<arraymap>].value<indices>=[value]\n"
757" \tmap:[<eventmap>].event<indices>=[event]\n"
758"\n"
759" \twhere <indices> is something like [0,3...5] or [all]\n"
760" \t(add -v to see detail)");
761 parse_state->error->str = strdup(errbuf);
762 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
763 parse_state->error->idx = term->err_val;
764 else
765 parse_state->error->idx = term->err_term + error_pos;
766 return err;
767 }
768 }
769 return 0;
770}
771
772
773
774
775
776
777
778
779
780
781
782static void
783split_bpf_config_terms(struct list_head *evt_head_config,
784 struct list_head *obj_head_config)
785{
786 struct parse_events_term *term, *temp;
787
788
789
790
791
792
793
794
795
796 list_for_each_entry_safe(term, temp, evt_head_config, list)
797 if (!parse_events__is_hardcoded_term(term))
798 list_move_tail(&term->list, obj_head_config);
799}
800
801int parse_events_load_bpf(struct parse_events_state *parse_state,
802 struct list_head *list,
803 char *bpf_file_name,
804 bool source,
805 struct list_head *head_config)
806{
807 int err;
808 struct bpf_object *obj;
809 LIST_HEAD(obj_head_config);
810
811 if (head_config)
812 split_bpf_config_terms(head_config, &obj_head_config);
813
814 obj = bpf__prepare_load(bpf_file_name, source);
815 if (IS_ERR(obj)) {
816 char errbuf[BUFSIZ];
817
818 err = PTR_ERR(obj);
819
820 if (err == -ENOTSUP)
821 snprintf(errbuf, sizeof(errbuf),
822 "BPF support is not compiled");
823 else
824 bpf__strerror_prepare_load(bpf_file_name,
825 source,
826 -err, errbuf,
827 sizeof(errbuf));
828
829 parse_state->error->help = strdup("(add -v to see detail)");
830 parse_state->error->str = strdup(errbuf);
831 return err;
832 }
833
834 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config);
835 if (err)
836 return err;
837 err = parse_events_config_bpf(parse_state, obj, &obj_head_config);
838
839
840
841
842
843 if (head_config)
844 list_splice_tail(&obj_head_config, head_config);
845 return err;
846}
847
848static int
849parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
850{
851 int i;
852
853 for (i = 0; i < 3; i++) {
854 if (!type || !type[i])
855 break;
856
857#define CHECK_SET_TYPE(bit) \
858do { \
859 if (attr->bp_type & bit) \
860 return -EINVAL; \
861 else \
862 attr->bp_type |= bit; \
863} while (0)
864
865 switch (type[i]) {
866 case 'r':
867 CHECK_SET_TYPE(HW_BREAKPOINT_R);
868 break;
869 case 'w':
870 CHECK_SET_TYPE(HW_BREAKPOINT_W);
871 break;
872 case 'x':
873 CHECK_SET_TYPE(HW_BREAKPOINT_X);
874 break;
875 default:
876 return -EINVAL;
877 }
878 }
879
880#undef CHECK_SET_TYPE
881
882 if (!attr->bp_type)
883 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
884
885 return 0;
886}
887
888int parse_events_add_breakpoint(struct list_head *list, int *idx,
889 void *ptr, char *type, u64 len)
890{
891 struct perf_event_attr attr;
892
893 memset(&attr, 0, sizeof(attr));
894 attr.bp_addr = (unsigned long) ptr;
895
896 if (parse_breakpoint_type(type, &attr))
897 return -EINVAL;
898
899
900 if (!len) {
901 if (attr.bp_type == HW_BREAKPOINT_X)
902 len = sizeof(long);
903 else
904 len = HW_BREAKPOINT_LEN_4;
905 }
906
907 attr.bp_len = len;
908
909 attr.type = PERF_TYPE_BREAKPOINT;
910 attr.sample_period = 1;
911
912 return add_event(list, idx, &attr, NULL, NULL);
913}
914
915static int check_type_val(struct parse_events_term *term,
916 struct parse_events_error *err,
917 int type)
918{
919 if (type == term->type_val)
920 return 0;
921
922 if (err) {
923 err->idx = term->err_val;
924 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
925 err->str = strdup("expected numeric value");
926 else
927 err->str = strdup("expected string value");
928 }
929 return -EINVAL;
930}
931
932
933
934
935static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
936 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
937 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
938 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
939 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
940 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
941 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
942 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
943 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
944 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
945 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
946 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
947 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
948 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
949 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
950 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr",
951 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
952 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
953 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
954 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore",
955};
956
957static bool config_term_shrinked;
958
959static bool
960config_term_avail(int term_type, struct parse_events_error *err)
961{
962 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
963 err->str = strdup("Invalid term_type");
964 return false;
965 }
966 if (!config_term_shrinked)
967 return true;
968
969 switch (term_type) {
970 case PARSE_EVENTS__TERM_TYPE_CONFIG:
971 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
972 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
973 case PARSE_EVENTS__TERM_TYPE_NAME:
974 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
975 case PARSE_EVENTS__TERM_TYPE_PERCORE:
976 return true;
977 default:
978 if (!err)
979 return false;
980
981
982 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
983 config_term_names[term_type]) < 0)
984 err->str = NULL;
985 return false;
986 }
987}
988
989void parse_events__shrink_config_terms(void)
990{
991 config_term_shrinked = true;
992}
993
994static int config_term_common(struct perf_event_attr *attr,
995 struct parse_events_term *term,
996 struct parse_events_error *err)
997{
998#define CHECK_TYPE_VAL(type) \
999do { \
1000 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
1001 return -EINVAL; \
1002} while (0)
1003
1004 switch (term->type_term) {
1005 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1006 CHECK_TYPE_VAL(NUM);
1007 attr->config = term->val.num;
1008 break;
1009 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1010 CHECK_TYPE_VAL(NUM);
1011 attr->config1 = term->val.num;
1012 break;
1013 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1014 CHECK_TYPE_VAL(NUM);
1015 attr->config2 = term->val.num;
1016 break;
1017 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1018 CHECK_TYPE_VAL(NUM);
1019 break;
1020 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1021 CHECK_TYPE_VAL(NUM);
1022 break;
1023 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1024 CHECK_TYPE_VAL(STR);
1025 if (strcmp(term->val.str, "no") &&
1026 parse_branch_str(term->val.str, &attr->branch_sample_type)) {
1027 err->str = strdup("invalid branch sample type");
1028 err->idx = term->err_val;
1029 return -EINVAL;
1030 }
1031 break;
1032 case PARSE_EVENTS__TERM_TYPE_TIME:
1033 CHECK_TYPE_VAL(NUM);
1034 if (term->val.num > 1) {
1035 err->str = strdup("expected 0 or 1");
1036 err->idx = term->err_val;
1037 return -EINVAL;
1038 }
1039 break;
1040 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1041 CHECK_TYPE_VAL(STR);
1042 break;
1043 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1044 CHECK_TYPE_VAL(NUM);
1045 break;
1046 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1047 CHECK_TYPE_VAL(NUM);
1048 break;
1049 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1050 CHECK_TYPE_VAL(NUM);
1051 break;
1052 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1053 CHECK_TYPE_VAL(NUM);
1054 break;
1055 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1056 CHECK_TYPE_VAL(NUM);
1057 break;
1058 case PARSE_EVENTS__TERM_TYPE_NAME:
1059 CHECK_TYPE_VAL(STR);
1060 break;
1061 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1062 CHECK_TYPE_VAL(NUM);
1063 break;
1064 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1065 CHECK_TYPE_VAL(NUM);
1066 break;
1067 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1068 CHECK_TYPE_VAL(NUM);
1069 if ((unsigned int)term->val.num > 1) {
1070 err->str = strdup("expected 0 or 1");
1071 err->idx = term->err_val;
1072 return -EINVAL;
1073 }
1074 break;
1075 default:
1076 err->str = strdup("unknown term");
1077 err->idx = term->err_term;
1078 err->help = parse_events_formats_error_string(NULL);
1079 return -EINVAL;
1080 }
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091 if (!config_term_avail(term->type_term, err))
1092 return -EINVAL;
1093 return 0;
1094#undef CHECK_TYPE_VAL
1095}
1096
1097static int config_term_pmu(struct perf_event_attr *attr,
1098 struct parse_events_term *term,
1099 struct parse_events_error *err)
1100{
1101 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1102 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1103
1104
1105
1106
1107 return 0;
1108 else
1109 return config_term_common(attr, term, err);
1110}
1111
1112static int config_term_tracepoint(struct perf_event_attr *attr,
1113 struct parse_events_term *term,
1114 struct parse_events_error *err)
1115{
1116 switch (term->type_term) {
1117 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1118 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1119 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1120 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1121 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1122 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1123 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1124 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1125 return config_term_common(attr, term, err);
1126 default:
1127 if (err) {
1128 err->idx = term->err_term;
1129 err->str = strdup("unknown term");
1130 err->help = strdup("valid terms: call-graph,stack-size\n");
1131 }
1132 return -EINVAL;
1133 }
1134
1135 return 0;
1136}
1137
1138static int config_attr(struct perf_event_attr *attr,
1139 struct list_head *head,
1140 struct parse_events_error *err,
1141 config_term_func_t config_term)
1142{
1143 struct parse_events_term *term;
1144
1145 list_for_each_entry(term, head, list)
1146 if (config_term(attr, term, err))
1147 return -EINVAL;
1148
1149 return 0;
1150}
1151
1152static int get_config_terms(struct list_head *head_config,
1153 struct list_head *head_terms __maybe_unused)
1154{
1155#define ADD_CONFIG_TERM(__type, __name, __val) \
1156do { \
1157 struct perf_evsel_config_term *__t; \
1158 \
1159 __t = zalloc(sizeof(*__t)); \
1160 if (!__t) \
1161 return -ENOMEM; \
1162 \
1163 INIT_LIST_HEAD(&__t->list); \
1164 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1165 __t->val.__name = __val; \
1166 __t->weak = term->weak; \
1167 list_add_tail(&__t->list, head_terms); \
1168} while (0)
1169
1170 struct parse_events_term *term;
1171
1172 list_for_each_entry(term, head_config, list) {
1173 switch (term->type_term) {
1174 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1175 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1176 break;
1177 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1178 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1179 break;
1180 case PARSE_EVENTS__TERM_TYPE_TIME:
1181 ADD_CONFIG_TERM(TIME, time, term->val.num);
1182 break;
1183 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1184 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1185 break;
1186 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1187 ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
1188 break;
1189 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1190 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1191 break;
1192 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1193 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1194 break;
1195 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1196 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1197 break;
1198 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1199 ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1200 break;
1201 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1202 ADD_CONFIG_TERM(MAX_EVENTS, max_events, term->val.num);
1203 break;
1204 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1205 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1206 break;
1207 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1208 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1209 break;
1210 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1211 ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1212 break;
1213 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1214 ADD_CONFIG_TERM(PERCORE, percore,
1215 term->val.num ? true : false);
1216 break;
1217 default:
1218 break;
1219 }
1220 }
1221#undef ADD_EVSEL_CONFIG
1222 return 0;
1223}
1224
1225int parse_events_add_tracepoint(struct list_head *list, int *idx,
1226 const char *sys, const char *event,
1227 struct parse_events_error *err,
1228 struct list_head *head_config)
1229{
1230 if (head_config) {
1231 struct perf_event_attr attr;
1232
1233 if (config_attr(&attr, head_config, err,
1234 config_term_tracepoint))
1235 return -EINVAL;
1236 }
1237
1238 if (strpbrk(sys, "*?"))
1239 return add_tracepoint_multi_sys(list, idx, sys, event,
1240 err, head_config);
1241 else
1242 return add_tracepoint_event(list, idx, sys, event,
1243 err, head_config);
1244}
1245
1246int parse_events_add_numeric(struct parse_events_state *parse_state,
1247 struct list_head *list,
1248 u32 type, u64 config,
1249 struct list_head *head_config)
1250{
1251 struct perf_event_attr attr;
1252 LIST_HEAD(config_terms);
1253
1254 memset(&attr, 0, sizeof(attr));
1255 attr.type = type;
1256 attr.config = config;
1257
1258 if (head_config) {
1259 if (config_attr(&attr, head_config, parse_state->error,
1260 config_term_common))
1261 return -EINVAL;
1262
1263 if (get_config_terms(head_config, &config_terms))
1264 return -ENOMEM;
1265 }
1266
1267 return add_event(list, &parse_state->idx, &attr,
1268 get_config_name(head_config), &config_terms);
1269}
1270
1271int parse_events_add_tool(struct parse_events_state *parse_state,
1272 struct list_head *list,
1273 enum perf_tool_event tool_event)
1274{
1275 return add_event_tool(list, &parse_state->idx, tool_event);
1276}
1277
1278static bool config_term_percore(struct list_head *config_terms)
1279{
1280 struct perf_evsel_config_term *term;
1281
1282 list_for_each_entry(term, config_terms, list) {
1283 if (term->type == PERF_EVSEL__CONFIG_TERM_PERCORE)
1284 return term->val.percore;
1285 }
1286
1287 return false;
1288}
1289
1290int parse_events_add_pmu(struct parse_events_state *parse_state,
1291 struct list_head *list, char *name,
1292 struct list_head *head_config,
1293 bool auto_merge_stats,
1294 bool use_alias)
1295{
1296 struct perf_event_attr attr;
1297 struct perf_pmu_info info;
1298 struct perf_pmu *pmu;
1299 struct perf_evsel *evsel;
1300 struct parse_events_error *err = parse_state->error;
1301 bool use_uncore_alias;
1302 LIST_HEAD(config_terms);
1303
1304 pmu = perf_pmu__find(name);
1305 if (!pmu) {
1306 if (asprintf(&err->str,
1307 "Cannot find PMU `%s'. Missing kernel support?",
1308 name) < 0)
1309 err->str = NULL;
1310 return -EINVAL;
1311 }
1312
1313 if (pmu->default_config) {
1314 memcpy(&attr, pmu->default_config,
1315 sizeof(struct perf_event_attr));
1316 } else {
1317 memset(&attr, 0, sizeof(attr));
1318 }
1319
1320 use_uncore_alias = (pmu->is_uncore && use_alias);
1321
1322 if (!head_config) {
1323 attr.type = pmu->type;
1324 evsel = __add_event(list, &parse_state->idx, &attr, NULL, pmu, NULL,
1325 auto_merge_stats, NULL);
1326 if (evsel) {
1327 evsel->pmu_name = name;
1328 evsel->use_uncore_alias = use_uncore_alias;
1329 return 0;
1330 } else {
1331 return -ENOMEM;
1332 }
1333 }
1334
1335 if (perf_pmu__check_alias(pmu, head_config, &info))
1336 return -EINVAL;
1337
1338
1339
1340
1341
1342 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu))
1343 return -EINVAL;
1344
1345 if (get_config_terms(head_config, &config_terms))
1346 return -ENOMEM;
1347
1348 if (perf_pmu__config(pmu, &attr, head_config, parse_state->error))
1349 return -EINVAL;
1350
1351 evsel = __add_event(list, &parse_state->idx, &attr,
1352 get_config_name(head_config), pmu,
1353 &config_terms, auto_merge_stats, NULL);
1354 if (evsel) {
1355 evsel->unit = info.unit;
1356 evsel->scale = info.scale;
1357 evsel->per_pkg = info.per_pkg;
1358 evsel->snapshot = info.snapshot;
1359 evsel->metric_expr = info.metric_expr;
1360 evsel->metric_name = info.metric_name;
1361 evsel->pmu_name = name;
1362 evsel->use_uncore_alias = use_uncore_alias;
1363 evsel->percore = config_term_percore(&evsel->config_terms);
1364 }
1365
1366 return evsel ? 0 : -ENOMEM;
1367}
1368
1369int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1370 char *str, struct list_head **listp)
1371{
1372 struct list_head *head;
1373 struct parse_events_term *term;
1374 struct list_head *list;
1375 struct perf_pmu *pmu = NULL;
1376 int ok = 0;
1377
1378 *listp = NULL;
1379
1380 list = malloc(sizeof(struct list_head));
1381 if (!list)
1382 return -1;
1383 INIT_LIST_HEAD(list);
1384 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1385 struct perf_pmu_alias *alias;
1386
1387 list_for_each_entry(alias, &pmu->aliases, list) {
1388 if (!strcasecmp(alias->name, str)) {
1389 head = malloc(sizeof(struct list_head));
1390 if (!head)
1391 return -1;
1392 INIT_LIST_HEAD(head);
1393 if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
1394 str, 1, false, &str, NULL) < 0)
1395 return -1;
1396 list_add_tail(&term->list, head);
1397
1398 if (!parse_events_add_pmu(parse_state, list,
1399 pmu->name, head,
1400 true, true)) {
1401 pr_debug("%s -> %s/%s/\n", str,
1402 pmu->name, alias->str);
1403 ok++;
1404 }
1405
1406 parse_events_terms__delete(head);
1407 }
1408 }
1409 }
1410 if (!ok)
1411 return -1;
1412 *listp = list;
1413 return 0;
1414}
1415
1416int parse_events__modifier_group(struct list_head *list,
1417 char *event_mod)
1418{
1419 return parse_events__modifier_event(list, event_mod, true);
1420}
1421
1422
1423
1424
1425
1426static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b)
1427{
1428 char *end_a, *end_b;
1429
1430 end_a = strrchr(pmu_name_a, '_');
1431 end_b = strrchr(pmu_name_b, '_');
1432
1433 if (!end_a || !end_b)
1434 return false;
1435
1436 if ((end_a - pmu_name_a) != (end_b - pmu_name_b))
1437 return false;
1438
1439 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0);
1440}
1441
1442static int
1443parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list,
1444 struct parse_events_state *parse_state)
1445{
1446 struct perf_evsel *evsel, *leader;
1447 uintptr_t *leaders;
1448 bool is_leader = true;
1449 int i, nr_pmu = 0, total_members, ret = 0;
1450
1451 leader = list_first_entry(list, struct perf_evsel, node);
1452 evsel = list_last_entry(list, struct perf_evsel, node);
1453 total_members = evsel->idx - leader->idx + 1;
1454
1455 leaders = calloc(total_members, sizeof(uintptr_t));
1456 if (WARN_ON(!leaders))
1457 return 0;
1458
1459
1460
1461
1462
1463
1464 __evlist__for_each_entry(list, evsel) {
1465
1466
1467 if (!evsel->use_uncore_alias)
1468 goto out;
1469
1470
1471 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name))
1472 goto out;
1473
1474 if (!is_leader)
1475 continue;
1476
1477
1478
1479
1480
1481 if ((leader != evsel) && (leader->pmu_name == evsel->pmu_name)) {
1482 is_leader = false;
1483 continue;
1484 }
1485
1486 WARN_ON(strcmp(leader->name, evsel->name));
1487
1488
1489 leaders[nr_pmu++] = (uintptr_t) evsel;
1490 }
1491
1492
1493 if (nr_pmu == total_members) {
1494 parse_state->nr_groups--;
1495 goto handled;
1496 }
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510 i = 0;
1511 __evlist__for_each_entry(list, evsel) {
1512 if (i >= nr_pmu)
1513 i = 0;
1514 evsel->leader = (struct perf_evsel *) leaders[i++];
1515 }
1516
1517
1518 for (i = 0; i < nr_pmu; i++) {
1519 evsel = (struct perf_evsel *) leaders[i];
1520 evsel->nr_members = total_members / nr_pmu;
1521 evsel->group_name = name ? strdup(name) : NULL;
1522 }
1523
1524
1525 parse_state->nr_groups += nr_pmu - 1;
1526
1527handled:
1528 ret = 1;
1529out:
1530 free(leaders);
1531 return ret;
1532}
1533
1534void parse_events__set_leader(char *name, struct list_head *list,
1535 struct parse_events_state *parse_state)
1536{
1537 struct perf_evsel *leader;
1538
1539 if (list_empty(list)) {
1540 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1541 return;
1542 }
1543
1544 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state))
1545 return;
1546
1547 __perf_evlist__set_leader(list);
1548 leader = list_entry(list->next, struct perf_evsel, node);
1549 leader->group_name = name ? strdup(name) : NULL;
1550}
1551
1552
1553void parse_events_update_lists(struct list_head *list_event,
1554 struct list_head *list_all)
1555{
1556
1557
1558
1559
1560
1561 list_splice_tail(list_event, list_all);
1562 free(list_event);
1563}
1564
1565struct event_modifier {
1566 int eu;
1567 int ek;
1568 int eh;
1569 int eH;
1570 int eG;
1571 int eI;
1572 int precise;
1573 int precise_max;
1574 int exclude_GH;
1575 int sample_read;
1576 int pinned;
1577 int weak;
1578};
1579
1580static int get_event_modifier(struct event_modifier *mod, char *str,
1581 struct perf_evsel *evsel)
1582{
1583 int eu = evsel ? evsel->attr.exclude_user : 0;
1584 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1585 int eh = evsel ? evsel->attr.exclude_hv : 0;
1586 int eH = evsel ? evsel->attr.exclude_host : 0;
1587 int eG = evsel ? evsel->attr.exclude_guest : 0;
1588 int eI = evsel ? evsel->attr.exclude_idle : 0;
1589 int precise = evsel ? evsel->attr.precise_ip : 0;
1590 int precise_max = 0;
1591 int sample_read = 0;
1592 int pinned = evsel ? evsel->attr.pinned : 0;
1593
1594 int exclude = eu | ek | eh;
1595 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1596 int weak = 0;
1597
1598 memset(mod, 0, sizeof(*mod));
1599
1600 while (*str) {
1601 if (*str == 'u') {
1602 if (!exclude)
1603 exclude = eu = ek = eh = 1;
1604 eu = 0;
1605 } else if (*str == 'k') {
1606 if (!exclude)
1607 exclude = eu = ek = eh = 1;
1608 ek = 0;
1609 } else if (*str == 'h') {
1610 if (!exclude)
1611 exclude = eu = ek = eh = 1;
1612 eh = 0;
1613 } else if (*str == 'G') {
1614 if (!exclude_GH)
1615 exclude_GH = eG = eH = 1;
1616 eG = 0;
1617 } else if (*str == 'H') {
1618 if (!exclude_GH)
1619 exclude_GH = eG = eH = 1;
1620 eH = 0;
1621 } else if (*str == 'I') {
1622 eI = 1;
1623 } else if (*str == 'p') {
1624 precise++;
1625
1626 if (!exclude_GH)
1627 eG = 1;
1628 } else if (*str == 'P') {
1629 precise_max = 1;
1630 } else if (*str == 'S') {
1631 sample_read = 1;
1632 } else if (*str == 'D') {
1633 pinned = 1;
1634 } else if (*str == 'W') {
1635 weak = 1;
1636 } else
1637 break;
1638
1639 ++str;
1640 }
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652 if (precise > 3)
1653 return -EINVAL;
1654
1655 mod->eu = eu;
1656 mod->ek = ek;
1657 mod->eh = eh;
1658 mod->eH = eH;
1659 mod->eG = eG;
1660 mod->eI = eI;
1661 mod->precise = precise;
1662 mod->precise_max = precise_max;
1663 mod->exclude_GH = exclude_GH;
1664 mod->sample_read = sample_read;
1665 mod->pinned = pinned;
1666 mod->weak = weak;
1667
1668 return 0;
1669}
1670
1671
1672
1673
1674
1675static int check_modifier(char *str)
1676{
1677 char *p = str;
1678
1679
1680 if (strlen(str) > (sizeof("ukhGHpppPSDIW") - 1))
1681 return -1;
1682
1683 while (*p) {
1684 if (*p != 'p' && strchr(p + 1, *p))
1685 return -1;
1686 p++;
1687 }
1688
1689 return 0;
1690}
1691
1692int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1693{
1694 struct perf_evsel *evsel;
1695 struct event_modifier mod;
1696
1697 if (str == NULL)
1698 return 0;
1699
1700 if (check_modifier(str))
1701 return -EINVAL;
1702
1703 if (!add && get_event_modifier(&mod, str, NULL))
1704 return -EINVAL;
1705
1706 __evlist__for_each_entry(list, evsel) {
1707 if (add && get_event_modifier(&mod, str, evsel))
1708 return -EINVAL;
1709
1710 evsel->attr.exclude_user = mod.eu;
1711 evsel->attr.exclude_kernel = mod.ek;
1712 evsel->attr.exclude_hv = mod.eh;
1713 evsel->attr.precise_ip = mod.precise;
1714 evsel->attr.exclude_host = mod.eH;
1715 evsel->attr.exclude_guest = mod.eG;
1716 evsel->attr.exclude_idle = mod.eI;
1717 evsel->exclude_GH = mod.exclude_GH;
1718 evsel->sample_read = mod.sample_read;
1719 evsel->precise_max = mod.precise_max;
1720 evsel->weak_group = mod.weak;
1721
1722 if (perf_evsel__is_group_leader(evsel))
1723 evsel->attr.pinned = mod.pinned;
1724 }
1725
1726 return 0;
1727}
1728
1729int parse_events_name(struct list_head *list, char *name)
1730{
1731 struct perf_evsel *evsel;
1732
1733 __evlist__for_each_entry(list, evsel) {
1734 if (!evsel->name)
1735 evsel->name = strdup(name);
1736 }
1737
1738 return 0;
1739}
1740
1741static int
1742comp_pmu(const void *p1, const void *p2)
1743{
1744 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1745 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1746
1747 return strcasecmp(pmu1->symbol, pmu2->symbol);
1748}
1749
1750static void perf_pmu__parse_cleanup(void)
1751{
1752 if (perf_pmu_events_list_num > 0) {
1753 struct perf_pmu_event_symbol *p;
1754 int i;
1755
1756 for (i = 0; i < perf_pmu_events_list_num; i++) {
1757 p = perf_pmu_events_list + i;
1758 zfree(&p->symbol);
1759 }
1760 zfree(&perf_pmu_events_list);
1761 perf_pmu_events_list_num = 0;
1762 }
1763}
1764
1765#define SET_SYMBOL(str, stype) \
1766do { \
1767 p->symbol = str; \
1768 if (!p->symbol) \
1769 goto err; \
1770 p->type = stype; \
1771} while (0)
1772
1773
1774
1775
1776
1777static void perf_pmu__parse_init(void)
1778{
1779
1780 struct perf_pmu *pmu = NULL;
1781 struct perf_pmu_alias *alias;
1782 int len = 0;
1783
1784 pmu = NULL;
1785 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1786 list_for_each_entry(alias, &pmu->aliases, list) {
1787 if (strchr(alias->name, '-'))
1788 len++;
1789 len++;
1790 }
1791 }
1792
1793 if (len == 0) {
1794 perf_pmu_events_list_num = -1;
1795 return;
1796 }
1797 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1798 if (!perf_pmu_events_list)
1799 return;
1800 perf_pmu_events_list_num = len;
1801
1802 len = 0;
1803 pmu = NULL;
1804 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1805 list_for_each_entry(alias, &pmu->aliases, list) {
1806 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1807 char *tmp = strchr(alias->name, '-');
1808
1809 if (tmp != NULL) {
1810 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1811 PMU_EVENT_SYMBOL_PREFIX);
1812 p++;
1813 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1814 len += 2;
1815 } else {
1816 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1817 len++;
1818 }
1819 }
1820 }
1821 qsort(perf_pmu_events_list, len,
1822 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1823
1824 return;
1825err:
1826 perf_pmu__parse_cleanup();
1827}
1828
1829enum perf_pmu_event_symbol_type
1830perf_pmu__parse_check(const char *name)
1831{
1832 struct perf_pmu_event_symbol p, *r;
1833
1834
1835 if (perf_pmu_events_list_num == 0)
1836 perf_pmu__parse_init();
1837
1838
1839
1840
1841
1842 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1843 return PMU_EVENT_SYMBOL_ERR;
1844
1845 p.symbol = strdup(name);
1846 r = bsearch(&p, perf_pmu_events_list,
1847 (size_t) perf_pmu_events_list_num,
1848 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1849 zfree(&p.symbol);
1850 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1851}
1852
1853static int parse_events__scanner(const char *str, void *parse_state, int start_token)
1854{
1855 YY_BUFFER_STATE buffer;
1856 void *scanner;
1857 int ret;
1858
1859 ret = parse_events_lex_init_extra(start_token, &scanner);
1860 if (ret)
1861 return ret;
1862
1863 buffer = parse_events__scan_string(str, scanner);
1864
1865#ifdef PARSER_DEBUG
1866 parse_events_debug = 1;
1867#endif
1868 ret = parse_events_parse(parse_state, scanner);
1869
1870 parse_events__flush_buffer(buffer, scanner);
1871 parse_events__delete_buffer(buffer, scanner);
1872 parse_events_lex_destroy(scanner);
1873 return ret;
1874}
1875
1876
1877
1878
1879int parse_events_terms(struct list_head *terms, const char *str)
1880{
1881 struct parse_events_state parse_state = {
1882 .terms = NULL,
1883 };
1884 int ret;
1885
1886 ret = parse_events__scanner(str, &parse_state, PE_START_TERMS);
1887 if (!ret) {
1888 list_splice(parse_state.terms, terms);
1889 zfree(&parse_state.terms);
1890 return 0;
1891 }
1892
1893 parse_events_terms__delete(parse_state.terms);
1894 return ret;
1895}
1896
1897int parse_events(struct perf_evlist *evlist, const char *str,
1898 struct parse_events_error *err)
1899{
1900 struct parse_events_state parse_state = {
1901 .list = LIST_HEAD_INIT(parse_state.list),
1902 .idx = evlist->nr_entries,
1903 .error = err,
1904 .evlist = evlist,
1905 };
1906 int ret;
1907
1908 ret = parse_events__scanner(str, &parse_state, PE_START_EVENTS);
1909 perf_pmu__parse_cleanup();
1910 if (!ret) {
1911 struct perf_evsel *last;
1912
1913 if (list_empty(&parse_state.list)) {
1914 WARN_ONCE(true, "WARNING: event parser found nothing\n");
1915 return -1;
1916 }
1917
1918 perf_evlist__splice_list_tail(evlist, &parse_state.list);
1919 evlist->nr_groups += parse_state.nr_groups;
1920 last = perf_evlist__last(evlist);
1921 last->cmdline_group_boundary = true;
1922
1923 return 0;
1924 }
1925
1926
1927
1928
1929
1930
1931 return ret;
1932}
1933
1934#define MAX_WIDTH 1000
1935static int get_term_width(void)
1936{
1937 struct winsize ws;
1938
1939 get_term_dimensions(&ws);
1940 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1941}
1942
1943void parse_events_print_error(struct parse_events_error *err,
1944 const char *event)
1945{
1946 const char *str = "invalid or unsupported event: ";
1947 char _buf[MAX_WIDTH];
1948 char *buf = (char *) event;
1949 int idx = 0;
1950
1951 if (err->str) {
1952
1953 int width = get_term_width() - 2;
1954 int len_event = strlen(event);
1955 int len_str, max_len, cut = 0;
1956
1957
1958
1959
1960
1961 int max_err_idx = 13;
1962
1963
1964
1965
1966
1967 str = "event syntax error: ";
1968 len_str = strlen(str);
1969 max_len = width - len_str;
1970
1971 buf = _buf;
1972
1973
1974 if (err->idx > max_err_idx)
1975 cut = err->idx - max_err_idx;
1976
1977 strncpy(buf, event + cut, max_len);
1978
1979
1980 if (cut)
1981 buf[0] = buf[1] = '.';
1982
1983 if ((len_event - cut) > max_len) {
1984 buf[max_len - 1] = buf[max_len - 2] = '.';
1985 buf[max_len] = 0;
1986 }
1987
1988 idx = len_str + err->idx - cut;
1989 }
1990
1991 fprintf(stderr, "%s'%s'\n", str, buf);
1992 if (idx) {
1993 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1994 if (err->help)
1995 fprintf(stderr, "\n%s\n", err->help);
1996 zfree(&err->str);
1997 zfree(&err->help);
1998 }
1999}
2000
2001#undef MAX_WIDTH
2002
2003int parse_events_option(const struct option *opt, const char *str,
2004 int unset __maybe_unused)
2005{
2006 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
2007 struct parse_events_error err = { .idx = 0, };
2008 int ret = parse_events(evlist, str, &err);
2009
2010 if (ret) {
2011 parse_events_print_error(&err, str);
2012 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2013 }
2014
2015 return ret;
2016}
2017
2018static int
2019foreach_evsel_in_last_glob(struct perf_evlist *evlist,
2020 int (*func)(struct perf_evsel *evsel,
2021 const void *arg),
2022 const void *arg)
2023{
2024 struct perf_evsel *last = NULL;
2025 int err;
2026
2027
2028
2029
2030
2031
2032
2033 if (evlist->nr_entries > 0)
2034 last = perf_evlist__last(evlist);
2035
2036 do {
2037 err = (*func)(last, arg);
2038 if (err)
2039 return -1;
2040 if (!last)
2041 return 0;
2042
2043 if (last->node.prev == &evlist->entries)
2044 return 0;
2045 last = list_entry(last->node.prev, struct perf_evsel, node);
2046 } while (!last->cmdline_group_boundary);
2047
2048 return 0;
2049}
2050
2051static int set_filter(struct perf_evsel *evsel, const void *arg)
2052{
2053 const char *str = arg;
2054 bool found = false;
2055 int nr_addr_filters = 0;
2056 struct perf_pmu *pmu = NULL;
2057
2058 if (evsel == NULL) {
2059 fprintf(stderr,
2060 "--filter option should follow a -e tracepoint or HW tracer option\n");
2061 return -1;
2062 }
2063
2064 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
2065 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
2066 fprintf(stderr,
2067 "not enough memory to hold filter string\n");
2068 return -1;
2069 }
2070
2071 return 0;
2072 }
2073
2074 while ((pmu = perf_pmu__scan(pmu)) != NULL)
2075 if (pmu->type == evsel->attr.type) {
2076 found = true;
2077 break;
2078 }
2079
2080 if (found)
2081 perf_pmu__scan_file(pmu, "nr_addr_filters",
2082 "%d", &nr_addr_filters);
2083
2084 if (!nr_addr_filters) {
2085 fprintf(stderr,
2086 "This CPU does not support address filtering\n");
2087 return -1;
2088 }
2089
2090 if (perf_evsel__append_addr_filter(evsel, str) < 0) {
2091 fprintf(stderr,
2092 "not enough memory to hold filter string\n");
2093 return -1;
2094 }
2095
2096 return 0;
2097}
2098
2099int parse_filter(const struct option *opt, const char *str,
2100 int unset __maybe_unused)
2101{
2102 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
2103
2104 return foreach_evsel_in_last_glob(evlist, set_filter,
2105 (const void *)str);
2106}
2107
2108static int add_exclude_perf_filter(struct perf_evsel *evsel,
2109 const void *arg __maybe_unused)
2110{
2111 char new_filter[64];
2112
2113 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
2114 fprintf(stderr,
2115 "--exclude-perf option should follow a -e tracepoint option\n");
2116 return -1;
2117 }
2118
2119 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2120
2121 if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
2122 fprintf(stderr,
2123 "not enough memory to hold filter string\n");
2124 return -1;
2125 }
2126
2127 return 0;
2128}
2129
2130int exclude_perf(const struct option *opt,
2131 const char *arg __maybe_unused,
2132 int unset __maybe_unused)
2133{
2134 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
2135
2136 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2137 NULL);
2138}
2139
2140static const char * const event_type_descriptors[] = {
2141 "Hardware event",
2142 "Software event",
2143 "Tracepoint event",
2144 "Hardware cache event",
2145 "Raw hardware event descriptor",
2146 "Hardware breakpoint",
2147};
2148
2149static int cmp_string(const void *a, const void *b)
2150{
2151 const char * const *as = a;
2152 const char * const *bs = b;
2153
2154 return strcmp(*as, *bs);
2155}
2156
2157
2158
2159
2160
2161void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
2162 bool name_only)
2163{
2164 DIR *sys_dir, *evt_dir;
2165 struct dirent *sys_dirent, *evt_dirent;
2166 char evt_path[MAXPATHLEN];
2167 char *dir_path;
2168 char **evt_list = NULL;
2169 unsigned int evt_i = 0, evt_num = 0;
2170 bool evt_num_known = false;
2171
2172restart:
2173 sys_dir = tracing_events__opendir();
2174 if (!sys_dir)
2175 return;
2176
2177 if (evt_num_known) {
2178 evt_list = zalloc(sizeof(char *) * evt_num);
2179 if (!evt_list)
2180 goto out_close_sys_dir;
2181 }
2182
2183 for_each_subsystem(sys_dir, sys_dirent) {
2184 if (subsys_glob != NULL &&
2185 !strglobmatch(sys_dirent->d_name, subsys_glob))
2186 continue;
2187
2188 dir_path = get_events_file(sys_dirent->d_name);
2189 if (!dir_path)
2190 continue;
2191 evt_dir = opendir(dir_path);
2192 if (!evt_dir)
2193 goto next;
2194
2195 for_each_event(dir_path, evt_dir, evt_dirent) {
2196 if (event_glob != NULL &&
2197 !strglobmatch(evt_dirent->d_name, event_glob))
2198 continue;
2199
2200 if (!evt_num_known) {
2201 evt_num++;
2202 continue;
2203 }
2204
2205 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2206 sys_dirent->d_name, evt_dirent->d_name);
2207
2208 evt_list[evt_i] = strdup(evt_path);
2209 if (evt_list[evt_i] == NULL) {
2210 put_events_file(dir_path);
2211 goto out_close_evt_dir;
2212 }
2213 evt_i++;
2214 }
2215 closedir(evt_dir);
2216next:
2217 put_events_file(dir_path);
2218 }
2219 closedir(sys_dir);
2220
2221 if (!evt_num_known) {
2222 evt_num_known = true;
2223 goto restart;
2224 }
2225 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2226 evt_i = 0;
2227 while (evt_i < evt_num) {
2228 if (name_only) {
2229 printf("%s ", evt_list[evt_i++]);
2230 continue;
2231 }
2232 printf(" %-50s [%s]\n", evt_list[evt_i++],
2233 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2234 }
2235 if (evt_num && pager_in_use())
2236 printf("\n");
2237
2238out_free:
2239 evt_num = evt_i;
2240 for (evt_i = 0; evt_i < evt_num; evt_i++)
2241 zfree(&evt_list[evt_i]);
2242 zfree(&evt_list);
2243 return;
2244
2245out_close_evt_dir:
2246 closedir(evt_dir);
2247out_close_sys_dir:
2248 closedir(sys_dir);
2249
2250 printf("FATAL: not enough memory to print %s\n",
2251 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2252 if (evt_list)
2253 goto out_free;
2254}
2255
2256
2257
2258
2259
2260int is_valid_tracepoint(const char *event_string)
2261{
2262 DIR *sys_dir, *evt_dir;
2263 struct dirent *sys_dirent, *evt_dirent;
2264 char evt_path[MAXPATHLEN];
2265 char *dir_path;
2266
2267 sys_dir = tracing_events__opendir();
2268 if (!sys_dir)
2269 return 0;
2270
2271 for_each_subsystem(sys_dir, sys_dirent) {
2272 dir_path = get_events_file(sys_dirent->d_name);
2273 if (!dir_path)
2274 continue;
2275 evt_dir = opendir(dir_path);
2276 if (!evt_dir)
2277 goto next;
2278
2279 for_each_event(dir_path, evt_dir, evt_dirent) {
2280 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2281 sys_dirent->d_name, evt_dirent->d_name);
2282 if (!strcmp(evt_path, event_string)) {
2283 closedir(evt_dir);
2284 closedir(sys_dir);
2285 return 1;
2286 }
2287 }
2288 closedir(evt_dir);
2289next:
2290 put_events_file(dir_path);
2291 }
2292 closedir(sys_dir);
2293 return 0;
2294}
2295
2296static bool is_event_supported(u8 type, unsigned config)
2297{
2298 bool ret = true;
2299 int open_return;
2300 struct perf_evsel *evsel;
2301 struct perf_event_attr attr = {
2302 .type = type,
2303 .config = config,
2304 .disabled = 1,
2305 };
2306 struct thread_map *tmap = thread_map__new_by_tid(0);
2307
2308 if (tmap == NULL)
2309 return false;
2310
2311 evsel = perf_evsel__new(&attr);
2312 if (evsel) {
2313 open_return = perf_evsel__open(evsel, NULL, tmap);
2314 ret = open_return >= 0;
2315
2316 if (open_return == -EACCES) {
2317
2318
2319
2320
2321
2322
2323
2324 evsel->attr.exclude_kernel = 1;
2325 ret = perf_evsel__open(evsel, NULL, tmap) >= 0;
2326 }
2327 perf_evsel__delete(evsel);
2328 }
2329
2330 thread_map__put(tmap);
2331 return ret;
2332}
2333
2334void print_sdt_events(const char *subsys_glob, const char *event_glob,
2335 bool name_only)
2336{
2337 struct probe_cache *pcache;
2338 struct probe_cache_entry *ent;
2339 struct strlist *bidlist, *sdtlist;
2340 struct strlist_config cfg = {.dont_dupstr = true};
2341 struct str_node *nd, *nd2;
2342 char *buf, *path, *ptr = NULL;
2343 bool show_detail = false;
2344 int ret;
2345
2346 sdtlist = strlist__new(NULL, &cfg);
2347 if (!sdtlist) {
2348 pr_debug("Failed to allocate new strlist for SDT\n");
2349 return;
2350 }
2351 bidlist = build_id_cache__list_all(true);
2352 if (!bidlist) {
2353 pr_debug("Failed to get buildids: %d\n", errno);
2354 return;
2355 }
2356 strlist__for_each_entry(nd, bidlist) {
2357 pcache = probe_cache__new(nd->s, NULL);
2358 if (!pcache)
2359 continue;
2360 list_for_each_entry(ent, &pcache->entries, node) {
2361 if (!ent->sdt)
2362 continue;
2363 if (subsys_glob &&
2364 !strglobmatch(ent->pev.group, subsys_glob))
2365 continue;
2366 if (event_glob &&
2367 !strglobmatch(ent->pev.event, event_glob))
2368 continue;
2369 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2370 ent->pev.event, nd->s);
2371 if (ret > 0)
2372 strlist__add(sdtlist, buf);
2373 }
2374 probe_cache__delete(pcache);
2375 }
2376 strlist__delete(bidlist);
2377
2378 strlist__for_each_entry(nd, sdtlist) {
2379 buf = strchr(nd->s, '@');
2380 if (buf)
2381 *(buf++) = '\0';
2382 if (name_only) {
2383 printf("%s ", nd->s);
2384 continue;
2385 }
2386 nd2 = strlist__next(nd);
2387 if (nd2) {
2388 ptr = strchr(nd2->s, '@');
2389 if (ptr)
2390 *ptr = '\0';
2391 if (strcmp(nd->s, nd2->s) == 0)
2392 show_detail = true;
2393 }
2394 if (show_detail) {
2395 path = build_id_cache__origname(buf);
2396 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2397 if (ret > 0) {
2398 printf(" %-50s [%s]\n", buf, "SDT event");
2399 free(buf);
2400 }
2401 free(path);
2402 } else
2403 printf(" %-50s [%s]\n", nd->s, "SDT event");
2404 if (nd2) {
2405 if (strcmp(nd->s, nd2->s) != 0)
2406 show_detail = false;
2407 if (ptr)
2408 *ptr = '@';
2409 }
2410 }
2411 strlist__delete(sdtlist);
2412}
2413
2414int print_hwcache_events(const char *event_glob, bool name_only)
2415{
2416 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2417 char name[64];
2418 char **evt_list = NULL;
2419 bool evt_num_known = false;
2420
2421restart:
2422 if (evt_num_known) {
2423 evt_list = zalloc(sizeof(char *) * evt_num);
2424 if (!evt_list)
2425 goto out_enomem;
2426 }
2427
2428 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2429 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2430
2431 if (!perf_evsel__is_cache_op_valid(type, op))
2432 continue;
2433
2434 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2435 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2436 name, sizeof(name));
2437 if (event_glob != NULL && !strglobmatch(name, event_glob))
2438 continue;
2439
2440 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2441 type | (op << 8) | (i << 16)))
2442 continue;
2443
2444 if (!evt_num_known) {
2445 evt_num++;
2446 continue;
2447 }
2448
2449 evt_list[evt_i] = strdup(name);
2450 if (evt_list[evt_i] == NULL)
2451 goto out_enomem;
2452 evt_i++;
2453 }
2454 }
2455 }
2456
2457 if (!evt_num_known) {
2458 evt_num_known = true;
2459 goto restart;
2460 }
2461 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2462 evt_i = 0;
2463 while (evt_i < evt_num) {
2464 if (name_only) {
2465 printf("%s ", evt_list[evt_i++]);
2466 continue;
2467 }
2468 printf(" %-50s [%s]\n", evt_list[evt_i++],
2469 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2470 }
2471 if (evt_num && pager_in_use())
2472 printf("\n");
2473
2474out_free:
2475 evt_num = evt_i;
2476 for (evt_i = 0; evt_i < evt_num; evt_i++)
2477 zfree(&evt_list[evt_i]);
2478 zfree(&evt_list);
2479 return evt_num;
2480
2481out_enomem:
2482 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2483 if (evt_list)
2484 goto out_free;
2485 return evt_num;
2486}
2487
2488static void print_tool_event(const char *name, const char *event_glob,
2489 bool name_only)
2490{
2491 if (event_glob && !strglobmatch(name, event_glob))
2492 return;
2493 if (name_only)
2494 printf("%s ", name);
2495 else
2496 printf(" %-50s [%s]\n", name, "Tool event");
2497
2498}
2499
2500void print_tool_events(const char *event_glob, bool name_only)
2501{
2502 print_tool_event("duration_time", event_glob, name_only);
2503 if (pager_in_use())
2504 printf("\n");
2505}
2506
2507void print_symbol_events(const char *event_glob, unsigned type,
2508 struct event_symbol *syms, unsigned max,
2509 bool name_only)
2510{
2511 unsigned int i, evt_i = 0, evt_num = 0;
2512 char name[MAX_NAME_LEN];
2513 char **evt_list = NULL;
2514 bool evt_num_known = false;
2515
2516restart:
2517 if (evt_num_known) {
2518 evt_list = zalloc(sizeof(char *) * evt_num);
2519 if (!evt_list)
2520 goto out_enomem;
2521 syms -= max;
2522 }
2523
2524 for (i = 0; i < max; i++, syms++) {
2525
2526 if (event_glob != NULL && syms->symbol != NULL &&
2527 !(strglobmatch(syms->symbol, event_glob) ||
2528 (syms->alias && strglobmatch(syms->alias, event_glob))))
2529 continue;
2530
2531 if (!is_event_supported(type, i))
2532 continue;
2533
2534 if (!evt_num_known) {
2535 evt_num++;
2536 continue;
2537 }
2538
2539 if (!name_only && strlen(syms->alias))
2540 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2541 else
2542 strlcpy(name, syms->symbol, MAX_NAME_LEN);
2543
2544 evt_list[evt_i] = strdup(name);
2545 if (evt_list[evt_i] == NULL)
2546 goto out_enomem;
2547 evt_i++;
2548 }
2549
2550 if (!evt_num_known) {
2551 evt_num_known = true;
2552 goto restart;
2553 }
2554 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2555 evt_i = 0;
2556 while (evt_i < evt_num) {
2557 if (name_only) {
2558 printf("%s ", evt_list[evt_i++]);
2559 continue;
2560 }
2561 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2562 }
2563 if (evt_num && pager_in_use())
2564 printf("\n");
2565
2566out_free:
2567 evt_num = evt_i;
2568 for (evt_i = 0; evt_i < evt_num; evt_i++)
2569 zfree(&evt_list[evt_i]);
2570 zfree(&evt_list);
2571 return;
2572
2573out_enomem:
2574 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2575 if (evt_list)
2576 goto out_free;
2577}
2578
2579
2580
2581
2582void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2583 bool long_desc, bool details_flag)
2584{
2585 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2586 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2587
2588 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2589 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2590 print_tool_events(event_glob, name_only);
2591
2592 print_hwcache_events(event_glob, name_only);
2593
2594 print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
2595 details_flag);
2596
2597 if (event_glob != NULL)
2598 return;
2599
2600 if (!name_only) {
2601 printf(" %-50s [%s]\n",
2602 "rNNN",
2603 event_type_descriptors[PERF_TYPE_RAW]);
2604 printf(" %-50s [%s]\n",
2605 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2606 event_type_descriptors[PERF_TYPE_RAW]);
2607 if (pager_in_use())
2608 printf(" (see 'man perf-list' on how to encode it)\n\n");
2609
2610 printf(" %-50s [%s]\n",
2611 "mem:<addr>[/len][:access]",
2612 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2613 if (pager_in_use())
2614 printf("\n");
2615 }
2616
2617 print_tracepoint_events(NULL, NULL, name_only);
2618
2619 print_sdt_events(NULL, NULL, name_only);
2620
2621 metricgroup__print(true, true, NULL, name_only, details_flag);
2622}
2623
2624int parse_events__is_hardcoded_term(struct parse_events_term *term)
2625{
2626 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2627}
2628
2629static int new_term(struct parse_events_term **_term,
2630 struct parse_events_term *temp,
2631 char *str, u64 num)
2632{
2633 struct parse_events_term *term;
2634
2635 term = malloc(sizeof(*term));
2636 if (!term)
2637 return -ENOMEM;
2638
2639 *term = *temp;
2640 INIT_LIST_HEAD(&term->list);
2641 term->weak = false;
2642
2643 switch (term->type_val) {
2644 case PARSE_EVENTS__TERM_TYPE_NUM:
2645 term->val.num = num;
2646 break;
2647 case PARSE_EVENTS__TERM_TYPE_STR:
2648 term->val.str = str;
2649 break;
2650 default:
2651 free(term);
2652 return -EINVAL;
2653 }
2654
2655 *_term = term;
2656 return 0;
2657}
2658
2659int parse_events_term__num(struct parse_events_term **term,
2660 int type_term, char *config, u64 num,
2661 bool no_value,
2662 void *loc_term_, void *loc_val_)
2663{
2664 YYLTYPE *loc_term = loc_term_;
2665 YYLTYPE *loc_val = loc_val_;
2666
2667 struct parse_events_term temp = {
2668 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2669 .type_term = type_term,
2670 .config = config,
2671 .no_value = no_value,
2672 .err_term = loc_term ? loc_term->first_column : 0,
2673 .err_val = loc_val ? loc_val->first_column : 0,
2674 };
2675
2676 return new_term(term, &temp, NULL, num);
2677}
2678
2679int parse_events_term__str(struct parse_events_term **term,
2680 int type_term, char *config, char *str,
2681 void *loc_term_, void *loc_val_)
2682{
2683 YYLTYPE *loc_term = loc_term_;
2684 YYLTYPE *loc_val = loc_val_;
2685
2686 struct parse_events_term temp = {
2687 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2688 .type_term = type_term,
2689 .config = config,
2690 .err_term = loc_term ? loc_term->first_column : 0,
2691 .err_val = loc_val ? loc_val->first_column : 0,
2692 };
2693
2694 return new_term(term, &temp, str, 0);
2695}
2696
2697int parse_events_term__sym_hw(struct parse_events_term **term,
2698 char *config, unsigned idx)
2699{
2700 struct event_symbol *sym;
2701 struct parse_events_term temp = {
2702 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2703 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
2704 .config = config ?: (char *) "event",
2705 };
2706
2707 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2708 sym = &event_symbols_hw[idx];
2709
2710 return new_term(term, &temp, (char *) sym->symbol, 0);
2711}
2712
2713int parse_events_term__clone(struct parse_events_term **new,
2714 struct parse_events_term *term)
2715{
2716 struct parse_events_term temp = {
2717 .type_val = term->type_val,
2718 .type_term = term->type_term,
2719 .config = term->config,
2720 .err_term = term->err_term,
2721 .err_val = term->err_val,
2722 };
2723
2724 return new_term(new, &temp, term->val.str, term->val.num);
2725}
2726
2727int parse_events_copy_term_list(struct list_head *old,
2728 struct list_head **new)
2729{
2730 struct parse_events_term *term, *n;
2731 int ret;
2732
2733 if (!old) {
2734 *new = NULL;
2735 return 0;
2736 }
2737
2738 *new = malloc(sizeof(struct list_head));
2739 if (!*new)
2740 return -ENOMEM;
2741 INIT_LIST_HEAD(*new);
2742
2743 list_for_each_entry (term, old, list) {
2744 ret = parse_events_term__clone(&n, term);
2745 if (ret)
2746 return ret;
2747 list_add_tail(&n->list, *new);
2748 }
2749 return 0;
2750}
2751
2752void parse_events_terms__purge(struct list_head *terms)
2753{
2754 struct parse_events_term *term, *h;
2755
2756 list_for_each_entry_safe(term, h, terms, list) {
2757 if (term->array.nr_ranges)
2758 zfree(&term->array.ranges);
2759 list_del_init(&term->list);
2760 free(term);
2761 }
2762}
2763
2764void parse_events_terms__delete(struct list_head *terms)
2765{
2766 if (!terms)
2767 return;
2768 parse_events_terms__purge(terms);
2769 free(terms);
2770}
2771
2772void parse_events__clear_array(struct parse_events_array *a)
2773{
2774 zfree(&a->ranges);
2775}
2776
2777void parse_events_evlist_error(struct parse_events_state *parse_state,
2778 int idx, const char *str)
2779{
2780 struct parse_events_error *err = parse_state->error;
2781
2782 if (!err)
2783 return;
2784 err->idx = idx;
2785 err->str = strdup(str);
2786 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2787}
2788
2789static void config_terms_list(char *buf, size_t buf_sz)
2790{
2791 int i;
2792 bool first = true;
2793
2794 buf[0] = '\0';
2795 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2796 const char *name = config_term_names[i];
2797
2798 if (!config_term_avail(i, NULL))
2799 continue;
2800 if (!name)
2801 continue;
2802 if (name[0] == '<')
2803 continue;
2804
2805 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2806 return;
2807
2808 if (!first)
2809 strcat(buf, ",");
2810 else
2811 first = false;
2812 strcat(buf, name);
2813 }
2814}
2815
2816
2817
2818
2819
2820char *parse_events_formats_error_string(char *additional_terms)
2821{
2822 char *str;
2823
2824 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2825 (sizeof("no-overwrite") - 1)];
2826
2827 config_terms_list(static_terms, sizeof(static_terms));
2828
2829 if (additional_terms) {
2830 if (asprintf(&str, "valid terms: %s,%s",
2831 additional_terms, static_terms) < 0)
2832 goto fail;
2833 } else {
2834 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2835 goto fail;
2836 }
2837 return str;
2838
2839fail:
2840 return NULL;
2841}
2842