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1// SPDX-License-Identifier: GPL-2.0
2#include <linux/hw_breakpoint.h>
3#include <linux/err.h>
4#include <linux/list_sort.h>
5#include <linux/zalloc.h>
6#include <dirent.h>
7#include <errno.h>
8#include <sys/ioctl.h>
9#include <sys/param.h>
10#include "term.h"
11#include "env.h"
12#include "evlist.h"
13#include "evsel.h"
14#include <subcmd/parse-options.h>
15#include "parse-events.h"
16#include "string2.h"
17#include "strbuf.h"
18#include "debug.h"
19#include <api/fs/tracing_path.h>
20#include <perf/cpumap.h>
21#include <util/parse-events-bison.h>
22#include <util/parse-events-flex.h>
23#include "pmu.h"
24#include "pmus.h"
25#include "asm/bug.h"
26#include "util/parse-branch-options.h"
27#include "util/evsel_config.h"
28#include "util/event.h"
29#include "util/bpf-filter.h"
30#include "util/util.h"
31#include "tracepoint.h"
32
33#define MAX_NAME_LEN 100
34
35static int get_config_terms(const struct parse_events_terms *head_config,
36 struct list_head *head_terms);
37static int parse_events_terms__copy(const struct parse_events_terms *src,
38 struct parse_events_terms *dest);
39
40const struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
41 [PERF_COUNT_HW_CPU_CYCLES] = {
42 .symbol = "cpu-cycles",
43 .alias = "cycles",
44 },
45 [PERF_COUNT_HW_INSTRUCTIONS] = {
46 .symbol = "instructions",
47 .alias = "",
48 },
49 [PERF_COUNT_HW_CACHE_REFERENCES] = {
50 .symbol = "cache-references",
51 .alias = "",
52 },
53 [PERF_COUNT_HW_CACHE_MISSES] = {
54 .symbol = "cache-misses",
55 .alias = "",
56 },
57 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
58 .symbol = "branch-instructions",
59 .alias = "branches",
60 },
61 [PERF_COUNT_HW_BRANCH_MISSES] = {
62 .symbol = "branch-misses",
63 .alias = "",
64 },
65 [PERF_COUNT_HW_BUS_CYCLES] = {
66 .symbol = "bus-cycles",
67 .alias = "",
68 },
69 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
70 .symbol = "stalled-cycles-frontend",
71 .alias = "idle-cycles-frontend",
72 },
73 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
74 .symbol = "stalled-cycles-backend",
75 .alias = "idle-cycles-backend",
76 },
77 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
78 .symbol = "ref-cycles",
79 .alias = "",
80 },
81};
82
83const struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
84 [PERF_COUNT_SW_CPU_CLOCK] = {
85 .symbol = "cpu-clock",
86 .alias = "",
87 },
88 [PERF_COUNT_SW_TASK_CLOCK] = {
89 .symbol = "task-clock",
90 .alias = "",
91 },
92 [PERF_COUNT_SW_PAGE_FAULTS] = {
93 .symbol = "page-faults",
94 .alias = "faults",
95 },
96 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
97 .symbol = "context-switches",
98 .alias = "cs",
99 },
100 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
101 .symbol = "cpu-migrations",
102 .alias = "migrations",
103 },
104 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
105 .symbol = "minor-faults",
106 .alias = "",
107 },
108 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
109 .symbol = "major-faults",
110 .alias = "",
111 },
112 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
113 .symbol = "alignment-faults",
114 .alias = "",
115 },
116 [PERF_COUNT_SW_EMULATION_FAULTS] = {
117 .symbol = "emulation-faults",
118 .alias = "",
119 },
120 [PERF_COUNT_SW_DUMMY] = {
121 .symbol = "dummy",
122 .alias = "",
123 },
124 [PERF_COUNT_SW_BPF_OUTPUT] = {
125 .symbol = "bpf-output",
126 .alias = "",
127 },
128 [PERF_COUNT_SW_CGROUP_SWITCHES] = {
129 .symbol = "cgroup-switches",
130 .alias = "",
131 },
132};
133
134const char *event_type(int type)
135{
136 switch (type) {
137 case PERF_TYPE_HARDWARE:
138 return "hardware";
139
140 case PERF_TYPE_SOFTWARE:
141 return "software";
142
143 case PERF_TYPE_TRACEPOINT:
144 return "tracepoint";
145
146 case PERF_TYPE_HW_CACHE:
147 return "hardware-cache";
148
149 default:
150 break;
151 }
152
153 return "unknown";
154}
155
156static char *get_config_str(const struct parse_events_terms *head_terms,
157 enum parse_events__term_type type_term)
158{
159 struct parse_events_term *term;
160
161 if (!head_terms)
162 return NULL;
163
164 list_for_each_entry(term, &head_terms->terms, list)
165 if (term->type_term == type_term)
166 return term->val.str;
167
168 return NULL;
169}
170
171static char *get_config_metric_id(const struct parse_events_terms *head_terms)
172{
173 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID);
174}
175
176static char *get_config_name(const struct parse_events_terms *head_terms)
177{
178 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME);
179}
180
181/**
182 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that
183 * matches the raw's string value. If the string value matches an
184 * event then change the term to be an event, if not then change it to
185 * be a config term. For example, "read" may be an event of the PMU or
186 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of
187 * the event can be determined and we don't need to scan all PMUs
188 * ahead-of-time.
189 * @config_terms: the list of terms that may contain a raw term.
190 * @pmu: the PMU to scan for events from.
191 */
192static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu)
193{
194 struct parse_events_term *term;
195
196 list_for_each_entry(term, &config_terms->terms, list) {
197 u64 num;
198
199 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW)
200 continue;
201
202 if (perf_pmu__have_event(pmu, term->val.str)) {
203 zfree(&term->config);
204 term->config = term->val.str;
205 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
206 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
207 term->val.num = 1;
208 term->no_value = true;
209 continue;
210 }
211
212 zfree(&term->config);
213 term->config = strdup("config");
214 errno = 0;
215 num = strtoull(term->val.str + 1, NULL, 16);
216 assert(errno == 0);
217 free(term->val.str);
218 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
219 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG;
220 term->val.num = num;
221 term->no_value = false;
222 }
223}
224
225static struct evsel *
226__add_event(struct list_head *list, int *idx,
227 struct perf_event_attr *attr,
228 bool init_attr,
229 const char *name, const char *metric_id, struct perf_pmu *pmu,
230 struct list_head *config_terms, bool auto_merge_stats,
231 struct perf_cpu_map *cpu_list, u64 alternate_hw_config)
232{
233 struct evsel *evsel;
234 struct perf_cpu_map *cpus = perf_cpu_map__is_empty(cpu_list) && pmu ? pmu->cpus : cpu_list;
235
236 cpus = perf_cpu_map__get(cpus);
237 if (pmu)
238 perf_pmu__warn_invalid_formats(pmu);
239
240 if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) {
241 perf_pmu__warn_invalid_config(pmu, attr->config, name,
242 PERF_PMU_FORMAT_VALUE_CONFIG, "config");
243 perf_pmu__warn_invalid_config(pmu, attr->config1, name,
244 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1");
245 perf_pmu__warn_invalid_config(pmu, attr->config2, name,
246 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2");
247 perf_pmu__warn_invalid_config(pmu, attr->config3, name,
248 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3");
249 }
250 if (init_attr)
251 event_attr_init(attr);
252
253 evsel = evsel__new_idx(attr, *idx);
254 if (!evsel) {
255 perf_cpu_map__put(cpus);
256 return NULL;
257 }
258
259 (*idx)++;
260 evsel->core.cpus = cpus;
261 evsel->core.own_cpus = perf_cpu_map__get(cpus);
262 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false;
263 evsel->core.is_pmu_core = pmu ? pmu->is_core : false;
264 evsel->auto_merge_stats = auto_merge_stats;
265 evsel->pmu = pmu;
266 evsel->alternate_hw_config = alternate_hw_config;
267
268 if (name)
269 evsel->name = strdup(name);
270
271 if (metric_id)
272 evsel->metric_id = strdup(metric_id);
273
274 if (config_terms)
275 list_splice_init(config_terms, &evsel->config_terms);
276
277 if (list)
278 list_add_tail(&evsel->core.node, list);
279
280 return evsel;
281}
282
283struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
284 const char *name, const char *metric_id,
285 struct perf_pmu *pmu)
286{
287 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name,
288 metric_id, pmu, /*config_terms=*/NULL,
289 /*auto_merge_stats=*/false, /*cpu_list=*/NULL,
290 /*alternate_hw_config=*/PERF_COUNT_HW_MAX);
291}
292
293static int add_event(struct list_head *list, int *idx,
294 struct perf_event_attr *attr, const char *name,
295 const char *metric_id, struct list_head *config_terms,
296 u64 alternate_hw_config)
297{
298 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id,
299 /*pmu=*/NULL, config_terms,
300 /*auto_merge_stats=*/false, /*cpu_list=*/NULL,
301 alternate_hw_config) ? 0 : -ENOMEM;
302}
303
304/**
305 * parse_aliases - search names for entries beginning or equalling str ignoring
306 * case. If mutliple entries in names match str then the longest
307 * is chosen.
308 * @str: The needle to look for.
309 * @names: The haystack to search.
310 * @size: The size of the haystack.
311 * @longest: Out argument giving the length of the matching entry.
312 */
313static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size,
314 int *longest)
315{
316 *longest = -1;
317 for (int i = 0; i < size; i++) {
318 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {
319 int n = strlen(names[i][j]);
320
321 if (n > *longest && !strncasecmp(str, names[i][j], n))
322 *longest = n;
323 }
324 if (*longest > 0)
325 return i;
326 }
327
328 return -1;
329}
330
331typedef int config_term_func_t(struct perf_event_attr *attr,
332 struct parse_events_term *term,
333 struct parse_events_error *err);
334static int config_term_common(struct perf_event_attr *attr,
335 struct parse_events_term *term,
336 struct parse_events_error *err);
337static int config_attr(struct perf_event_attr *attr,
338 const struct parse_events_terms *head,
339 struct parse_events_error *err,
340 config_term_func_t config_term);
341
342/**
343 * parse_events__decode_legacy_cache - Search name for the legacy cache event
344 * name composed of 1, 2 or 3 hyphen
345 * separated sections. The first section is
346 * the cache type while the others are the
347 * optional op and optional result. To make
348 * life hard the names in the table also
349 * contain hyphens and the longest name
350 * should always be selected.
351 */
352int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config)
353{
354 int len, cache_type = -1, cache_op = -1, cache_result = -1;
355 const char *name_end = &name[strlen(name) + 1];
356 const char *str = name;
357
358 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len);
359 if (cache_type == -1)
360 return -EINVAL;
361 str += len + 1;
362
363 if (str < name_end) {
364 cache_op = parse_aliases(str, evsel__hw_cache_op,
365 PERF_COUNT_HW_CACHE_OP_MAX, &len);
366 if (cache_op >= 0) {
367 if (!evsel__is_cache_op_valid(cache_type, cache_op))
368 return -EINVAL;
369 str += len + 1;
370 } else {
371 cache_result = parse_aliases(str, evsel__hw_cache_result,
372 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
373 if (cache_result >= 0)
374 str += len + 1;
375 }
376 }
377 if (str < name_end) {
378 if (cache_op < 0) {
379 cache_op = parse_aliases(str, evsel__hw_cache_op,
380 PERF_COUNT_HW_CACHE_OP_MAX, &len);
381 if (cache_op >= 0) {
382 if (!evsel__is_cache_op_valid(cache_type, cache_op))
383 return -EINVAL;
384 }
385 } else if (cache_result < 0) {
386 cache_result = parse_aliases(str, evsel__hw_cache_result,
387 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
388 }
389 }
390
391 /*
392 * Fall back to reads:
393 */
394 if (cache_op == -1)
395 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
396
397 /*
398 * Fall back to accesses:
399 */
400 if (cache_result == -1)
401 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
402
403 *config = cache_type | (cache_op << 8) | (cache_result << 16);
404 if (perf_pmus__supports_extended_type())
405 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT;
406 return 0;
407}
408
409/**
410 * parse_events__filter_pmu - returns false if a wildcard PMU should be
411 * considered, true if it should be filtered.
412 */
413bool parse_events__filter_pmu(const struct parse_events_state *parse_state,
414 const struct perf_pmu *pmu)
415{
416 if (parse_state->pmu_filter == NULL)
417 return false;
418
419 return strcmp(parse_state->pmu_filter, pmu->name) != 0;
420}
421
422static int parse_events_add_pmu(struct parse_events_state *parse_state,
423 struct list_head *list, struct perf_pmu *pmu,
424 const struct parse_events_terms *const_parsed_terms,
425 bool auto_merge_stats, u64 alternate_hw_config);
426
427int parse_events_add_cache(struct list_head *list, int *idx, const char *name,
428 struct parse_events_state *parse_state,
429 struct parse_events_terms *parsed_terms)
430{
431 struct perf_pmu *pmu = NULL;
432 bool found_supported = false;
433 const char *config_name = get_config_name(parsed_terms);
434 const char *metric_id = get_config_metric_id(parsed_terms);
435
436 while ((pmu = perf_pmus__scan(pmu)) != NULL) {
437 LIST_HEAD(config_terms);
438 struct perf_event_attr attr;
439 int ret;
440
441 if (parse_events__filter_pmu(parse_state, pmu))
442 continue;
443
444 if (perf_pmu__have_event(pmu, name)) {
445 /*
446 * The PMU has the event so add as not a legacy cache
447 * event.
448 */
449 ret = parse_events_add_pmu(parse_state, list, pmu,
450 parsed_terms,
451 perf_pmu__auto_merge_stats(pmu),
452 /*alternate_hw_config=*/PERF_COUNT_HW_MAX);
453 if (ret)
454 return ret;
455 continue;
456 }
457
458 if (!pmu->is_core) {
459 /* Legacy cache events are only supported by core PMUs. */
460 continue;
461 }
462
463 memset(&attr, 0, sizeof(attr));
464 attr.type = PERF_TYPE_HW_CACHE;
465
466 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config);
467 if (ret)
468 return ret;
469
470 found_supported = true;
471
472 if (parsed_terms) {
473 if (config_attr(&attr, parsed_terms, parse_state->error,
474 config_term_common))
475 return -EINVAL;
476
477 if (get_config_terms(parsed_terms, &config_terms))
478 return -ENOMEM;
479 }
480
481 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name,
482 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
483 /*cpu_list=*/NULL,
484 /*alternate_hw_config=*/PERF_COUNT_HW_MAX) == NULL)
485 return -ENOMEM;
486
487 free_config_terms(&config_terms);
488 }
489 return found_supported ? 0 : -EINVAL;
490}
491
492#ifdef HAVE_LIBTRACEEVENT
493static void tracepoint_error(struct parse_events_error *e, int err,
494 const char *sys, const char *name, int column)
495{
496 const char *str;
497 char help[BUFSIZ];
498
499 if (!e)
500 return;
501
502 /*
503 * We get error directly from syscall errno ( > 0),
504 * or from encoded pointer's error ( < 0).
505 */
506 err = abs(err);
507
508 switch (err) {
509 case EACCES:
510 str = "can't access trace events";
511 break;
512 case ENOENT:
513 str = "unknown tracepoint";
514 break;
515 default:
516 str = "failed to add tracepoint";
517 break;
518 }
519
520 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
521 parse_events_error__handle(e, column, strdup(str), strdup(help));
522}
523
524static int add_tracepoint(struct parse_events_state *parse_state,
525 struct list_head *list,
526 const char *sys_name, const char *evt_name,
527 struct parse_events_error *err,
528 struct parse_events_terms *head_config, void *loc_)
529{
530 YYLTYPE *loc = loc_;
531 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, parse_state->idx++,
532 !parse_state->fake_tp);
533
534 if (IS_ERR(evsel)) {
535 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column);
536 return PTR_ERR(evsel);
537 }
538
539 if (head_config) {
540 LIST_HEAD(config_terms);
541
542 if (get_config_terms(head_config, &config_terms))
543 return -ENOMEM;
544 list_splice(&config_terms, &evsel->config_terms);
545 }
546
547 list_add_tail(&evsel->core.node, list);
548 return 0;
549}
550
551static int add_tracepoint_multi_event(struct parse_events_state *parse_state,
552 struct list_head *list,
553 const char *sys_name, const char *evt_name,
554 struct parse_events_error *err,
555 struct parse_events_terms *head_config, YYLTYPE *loc)
556{
557 char *evt_path;
558 struct dirent *evt_ent;
559 DIR *evt_dir;
560 int ret = 0, found = 0;
561
562 evt_path = get_events_file(sys_name);
563 if (!evt_path) {
564 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
565 return -1;
566 }
567 evt_dir = opendir(evt_path);
568 if (!evt_dir) {
569 put_events_file(evt_path);
570 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
571 return -1;
572 }
573
574 while (!ret && (evt_ent = readdir(evt_dir))) {
575 if (!strcmp(evt_ent->d_name, ".")
576 || !strcmp(evt_ent->d_name, "..")
577 || !strcmp(evt_ent->d_name, "enable")
578 || !strcmp(evt_ent->d_name, "filter"))
579 continue;
580
581 if (!strglobmatch(evt_ent->d_name, evt_name))
582 continue;
583
584 found++;
585
586 ret = add_tracepoint(parse_state, list, sys_name, evt_ent->d_name,
587 err, head_config, loc);
588 }
589
590 if (!found) {
591 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column);
592 ret = -1;
593 }
594
595 put_events_file(evt_path);
596 closedir(evt_dir);
597 return ret;
598}
599
600static int add_tracepoint_event(struct parse_events_state *parse_state,
601 struct list_head *list,
602 const char *sys_name, const char *evt_name,
603 struct parse_events_error *err,
604 struct parse_events_terms *head_config, YYLTYPE *loc)
605{
606 return strpbrk(evt_name, "*?") ?
607 add_tracepoint_multi_event(parse_state, list, sys_name, evt_name,
608 err, head_config, loc) :
609 add_tracepoint(parse_state, list, sys_name, evt_name,
610 err, head_config, loc);
611}
612
613static int add_tracepoint_multi_sys(struct parse_events_state *parse_state,
614 struct list_head *list,
615 const char *sys_name, const char *evt_name,
616 struct parse_events_error *err,
617 struct parse_events_terms *head_config, YYLTYPE *loc)
618{
619 struct dirent *events_ent;
620 DIR *events_dir;
621 int ret = 0;
622
623 events_dir = tracing_events__opendir();
624 if (!events_dir) {
625 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
626 return -1;
627 }
628
629 while (!ret && (events_ent = readdir(events_dir))) {
630 if (!strcmp(events_ent->d_name, ".")
631 || !strcmp(events_ent->d_name, "..")
632 || !strcmp(events_ent->d_name, "enable")
633 || !strcmp(events_ent->d_name, "header_event")
634 || !strcmp(events_ent->d_name, "header_page"))
635 continue;
636
637 if (!strglobmatch(events_ent->d_name, sys_name))
638 continue;
639
640 ret = add_tracepoint_event(parse_state, list, events_ent->d_name,
641 evt_name, err, head_config, loc);
642 }
643
644 closedir(events_dir);
645 return ret;
646}
647#endif /* HAVE_LIBTRACEEVENT */
648
649size_t default_breakpoint_len(void)
650{
651#if defined(__i386__)
652 static int len;
653
654 if (len == 0) {
655 struct perf_env env = {};
656
657 perf_env__init(&env);
658 len = perf_env__kernel_is_64_bit(&env) ? sizeof(u64) : sizeof(long);
659 perf_env__exit(&env);
660 }
661 return len;
662#elif defined(__aarch64__)
663 return 4;
664#else
665 return sizeof(long);
666#endif
667}
668
669static int
670parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
671{
672 int i;
673
674 for (i = 0; i < 3; i++) {
675 if (!type || !type[i])
676 break;
677
678#define CHECK_SET_TYPE(bit) \
679do { \
680 if (attr->bp_type & bit) \
681 return -EINVAL; \
682 else \
683 attr->bp_type |= bit; \
684} while (0)
685
686 switch (type[i]) {
687 case 'r':
688 CHECK_SET_TYPE(HW_BREAKPOINT_R);
689 break;
690 case 'w':
691 CHECK_SET_TYPE(HW_BREAKPOINT_W);
692 break;
693 case 'x':
694 CHECK_SET_TYPE(HW_BREAKPOINT_X);
695 break;
696 default:
697 return -EINVAL;
698 }
699 }
700
701#undef CHECK_SET_TYPE
702
703 if (!attr->bp_type) /* Default */
704 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
705
706 return 0;
707}
708
709int parse_events_add_breakpoint(struct parse_events_state *parse_state,
710 struct list_head *list,
711 u64 addr, char *type, u64 len,
712 struct parse_events_terms *head_config)
713{
714 struct perf_event_attr attr;
715 LIST_HEAD(config_terms);
716 const char *name;
717
718 memset(&attr, 0, sizeof(attr));
719 attr.bp_addr = addr;
720
721 if (parse_breakpoint_type(type, &attr))
722 return -EINVAL;
723
724 /* Provide some defaults if len is not specified */
725 if (!len) {
726 if (attr.bp_type == HW_BREAKPOINT_X)
727 len = default_breakpoint_len();
728 else
729 len = HW_BREAKPOINT_LEN_4;
730 }
731
732 attr.bp_len = len;
733
734 attr.type = PERF_TYPE_BREAKPOINT;
735 attr.sample_period = 1;
736
737 if (head_config) {
738 if (config_attr(&attr, head_config, parse_state->error,
739 config_term_common))
740 return -EINVAL;
741
742 if (get_config_terms(head_config, &config_terms))
743 return -ENOMEM;
744 }
745
746 name = get_config_name(head_config);
747
748 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL,
749 &config_terms, /*alternate_hw_config=*/PERF_COUNT_HW_MAX);
750}
751
752static int check_type_val(struct parse_events_term *term,
753 struct parse_events_error *err,
754 enum parse_events__term_val_type type)
755{
756 if (type == term->type_val)
757 return 0;
758
759 if (err) {
760 parse_events_error__handle(err, term->err_val,
761 type == PARSE_EVENTS__TERM_TYPE_NUM
762 ? strdup("expected numeric value")
763 : strdup("expected string value"),
764 NULL);
765 }
766 return -EINVAL;
767}
768
769static bool config_term_shrinked;
770
771const char *parse_events__term_type_str(enum parse_events__term_type term_type)
772{
773 /*
774 * Update according to parse-events.l
775 */
776 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
777 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
778 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
779 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
780 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
781 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3",
782 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
783 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
784 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
785 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
786 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
787 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
788 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
789 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
790 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
791 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
792 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr",
793 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
794 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
795 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
796 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore",
797 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output",
798 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size",
799 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id",
800 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw",
801 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache",
802 [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware",
803 };
804 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR)
805 return "unknown term";
806
807 return config_term_names[term_type];
808}
809
810static bool
811config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err)
812{
813 char *err_str;
814
815 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
816 parse_events_error__handle(err, -1,
817 strdup("Invalid term_type"), NULL);
818 return false;
819 }
820 if (!config_term_shrinked)
821 return true;
822
823 switch (term_type) {
824 case PARSE_EVENTS__TERM_TYPE_CONFIG:
825 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
826 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
827 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
828 case PARSE_EVENTS__TERM_TYPE_NAME:
829 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
830 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
831 case PARSE_EVENTS__TERM_TYPE_PERCORE:
832 return true;
833 case PARSE_EVENTS__TERM_TYPE_USER:
834 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
835 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
836 case PARSE_EVENTS__TERM_TYPE_TIME:
837 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
838 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
839 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
840 case PARSE_EVENTS__TERM_TYPE_INHERIT:
841 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
842 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
843 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
844 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
845 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
846 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
847 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
848 case PARSE_EVENTS__TERM_TYPE_RAW:
849 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
850 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
851 default:
852 if (!err)
853 return false;
854
855 /* term_type is validated so indexing is safe */
856 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",
857 parse_events__term_type_str(term_type)) >= 0)
858 parse_events_error__handle(err, -1, err_str, NULL);
859 return false;
860 }
861}
862
863void parse_events__shrink_config_terms(void)
864{
865 config_term_shrinked = true;
866}
867
868static int config_term_common(struct perf_event_attr *attr,
869 struct parse_events_term *term,
870 struct parse_events_error *err)
871{
872#define CHECK_TYPE_VAL(type) \
873do { \
874 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
875 return -EINVAL; \
876} while (0)
877
878 switch (term->type_term) {
879 case PARSE_EVENTS__TERM_TYPE_CONFIG:
880 CHECK_TYPE_VAL(NUM);
881 attr->config = term->val.num;
882 break;
883 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
884 CHECK_TYPE_VAL(NUM);
885 attr->config1 = term->val.num;
886 break;
887 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
888 CHECK_TYPE_VAL(NUM);
889 attr->config2 = term->val.num;
890 break;
891 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
892 CHECK_TYPE_VAL(NUM);
893 attr->config3 = term->val.num;
894 break;
895 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
896 CHECK_TYPE_VAL(NUM);
897 break;
898 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
899 CHECK_TYPE_VAL(NUM);
900 break;
901 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
902 CHECK_TYPE_VAL(STR);
903 if (strcmp(term->val.str, "no") &&
904 parse_branch_str(term->val.str,
905 &attr->branch_sample_type)) {
906 parse_events_error__handle(err, term->err_val,
907 strdup("invalid branch sample type"),
908 NULL);
909 return -EINVAL;
910 }
911 break;
912 case PARSE_EVENTS__TERM_TYPE_TIME:
913 CHECK_TYPE_VAL(NUM);
914 if (term->val.num > 1) {
915 parse_events_error__handle(err, term->err_val,
916 strdup("expected 0 or 1"),
917 NULL);
918 return -EINVAL;
919 }
920 break;
921 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
922 CHECK_TYPE_VAL(STR);
923 break;
924 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
925 CHECK_TYPE_VAL(NUM);
926 break;
927 case PARSE_EVENTS__TERM_TYPE_INHERIT:
928 CHECK_TYPE_VAL(NUM);
929 break;
930 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
931 CHECK_TYPE_VAL(NUM);
932 break;
933 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
934 CHECK_TYPE_VAL(NUM);
935 break;
936 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
937 CHECK_TYPE_VAL(NUM);
938 break;
939 case PARSE_EVENTS__TERM_TYPE_NAME:
940 CHECK_TYPE_VAL(STR);
941 break;
942 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
943 CHECK_TYPE_VAL(STR);
944 break;
945 case PARSE_EVENTS__TERM_TYPE_RAW:
946 CHECK_TYPE_VAL(STR);
947 break;
948 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
949 CHECK_TYPE_VAL(NUM);
950 break;
951 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
952 CHECK_TYPE_VAL(NUM);
953 break;
954 case PARSE_EVENTS__TERM_TYPE_PERCORE:
955 CHECK_TYPE_VAL(NUM);
956 if ((unsigned int)term->val.num > 1) {
957 parse_events_error__handle(err, term->err_val,
958 strdup("expected 0 or 1"),
959 NULL);
960 return -EINVAL;
961 }
962 break;
963 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
964 CHECK_TYPE_VAL(NUM);
965 break;
966 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
967 CHECK_TYPE_VAL(NUM);
968 if (term->val.num > UINT_MAX) {
969 parse_events_error__handle(err, term->err_val,
970 strdup("too big"),
971 NULL);
972 return -EINVAL;
973 }
974 break;
975 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
976 case PARSE_EVENTS__TERM_TYPE_USER:
977 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
978 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
979 default:
980 parse_events_error__handle(err, term->err_term,
981 strdup(parse_events__term_type_str(term->type_term)),
982 parse_events_formats_error_string(NULL));
983 return -EINVAL;
984 }
985
986 /*
987 * Check term availability after basic checking so
988 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
989 *
990 * If check availability at the entry of this function,
991 * user will see "'<sysfs term>' is not usable in 'perf stat'"
992 * if an invalid config term is provided for legacy events
993 * (for example, instructions/badterm/...), which is confusing.
994 */
995 if (!config_term_avail(term->type_term, err))
996 return -EINVAL;
997 return 0;
998#undef CHECK_TYPE_VAL
999}
1000
1001static int config_term_pmu(struct perf_event_attr *attr,
1002 struct parse_events_term *term,
1003 struct parse_events_error *err)
1004{
1005 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) {
1006 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
1007
1008 if (!pmu) {
1009 char *err_str;
1010
1011 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
1012 parse_events_error__handle(err, term->err_term,
1013 err_str, /*help=*/NULL);
1014 return -EINVAL;
1015 }
1016 /*
1017 * Rewrite the PMU event to a legacy cache one unless the PMU
1018 * doesn't support legacy cache events or the event is present
1019 * within the PMU.
1020 */
1021 if (perf_pmu__supports_legacy_cache(pmu) &&
1022 !perf_pmu__have_event(pmu, term->config)) {
1023 attr->type = PERF_TYPE_HW_CACHE;
1024 return parse_events__decode_legacy_cache(term->config, pmu->type,
1025 &attr->config);
1026 } else {
1027 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1028 term->no_value = true;
1029 }
1030 }
1031 if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) {
1032 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
1033
1034 if (!pmu) {
1035 char *err_str;
1036
1037 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
1038 parse_events_error__handle(err, term->err_term,
1039 err_str, /*help=*/NULL);
1040 return -EINVAL;
1041 }
1042 /*
1043 * If the PMU has a sysfs or json event prefer it over
1044 * legacy. ARM requires this.
1045 */
1046 if (perf_pmu__have_event(pmu, term->config)) {
1047 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1048 term->no_value = true;
1049 term->alternate_hw_config = true;
1050 } else {
1051 attr->type = PERF_TYPE_HARDWARE;
1052 attr->config = term->val.num;
1053 if (perf_pmus__supports_extended_type())
1054 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT;
1055 }
1056 return 0;
1057 }
1058 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1059 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) {
1060 /*
1061 * Always succeed for sysfs terms, as we dont know
1062 * at this point what type they need to have.
1063 */
1064 return 0;
1065 }
1066 return config_term_common(attr, term, err);
1067}
1068
1069#ifdef HAVE_LIBTRACEEVENT
1070static int config_term_tracepoint(struct perf_event_attr *attr,
1071 struct parse_events_term *term,
1072 struct parse_events_error *err)
1073{
1074 switch (term->type_term) {
1075 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1076 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1077 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1078 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1079 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1080 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1081 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1082 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1083 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1084 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1085 return config_term_common(attr, term, err);
1086 case PARSE_EVENTS__TERM_TYPE_USER:
1087 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1088 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1089 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1090 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1091 case PARSE_EVENTS__TERM_TYPE_NAME:
1092 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1093 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1094 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1095 case PARSE_EVENTS__TERM_TYPE_TIME:
1096 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1097 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1098 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1099 case PARSE_EVENTS__TERM_TYPE_RAW:
1100 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1101 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1102 default:
1103 if (err) {
1104 parse_events_error__handle(err, term->err_term,
1105 strdup(parse_events__term_type_str(term->type_term)),
1106 strdup("valid terms: call-graph,stack-size\n")
1107 );
1108 }
1109 return -EINVAL;
1110 }
1111
1112 return 0;
1113}
1114#endif
1115
1116static int config_attr(struct perf_event_attr *attr,
1117 const struct parse_events_terms *head,
1118 struct parse_events_error *err,
1119 config_term_func_t config_term)
1120{
1121 struct parse_events_term *term;
1122
1123 list_for_each_entry(term, &head->terms, list)
1124 if (config_term(attr, term, err))
1125 return -EINVAL;
1126
1127 return 0;
1128}
1129
1130static int get_config_terms(const struct parse_events_terms *head_config,
1131 struct list_head *head_terms)
1132{
1133#define ADD_CONFIG_TERM(__type, __weak) \
1134 struct evsel_config_term *__t; \
1135 \
1136 __t = zalloc(sizeof(*__t)); \
1137 if (!__t) \
1138 return -ENOMEM; \
1139 \
1140 INIT_LIST_HEAD(&__t->list); \
1141 __t->type = EVSEL__CONFIG_TERM_ ## __type; \
1142 __t->weak = __weak; \
1143 list_add_tail(&__t->list, head_terms)
1144
1145#define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \
1146do { \
1147 ADD_CONFIG_TERM(__type, __weak); \
1148 __t->val.__name = __val; \
1149} while (0)
1150
1151#define ADD_CONFIG_TERM_STR(__type, __val, __weak) \
1152do { \
1153 ADD_CONFIG_TERM(__type, __weak); \
1154 __t->val.str = strdup(__val); \
1155 if (!__t->val.str) { \
1156 zfree(&__t); \
1157 return -ENOMEM; \
1158 } \
1159 __t->free_str = true; \
1160} while (0)
1161
1162 struct parse_events_term *term;
1163
1164 list_for_each_entry(term, &head_config->terms, list) {
1165 switch (term->type_term) {
1166 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1167 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);
1168 break;
1169 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1170 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);
1171 break;
1172 case PARSE_EVENTS__TERM_TYPE_TIME:
1173 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);
1174 break;
1175 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1176 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);
1177 break;
1178 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1179 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);
1180 break;
1181 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1182 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
1183 term->val.num, term->weak);
1184 break;
1185 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1186 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1187 term->val.num ? 1 : 0, term->weak);
1188 break;
1189 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1190 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1191 term->val.num ? 0 : 1, term->weak);
1192 break;
1193 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1194 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
1195 term->val.num, term->weak);
1196 break;
1197 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1198 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
1199 term->val.num, term->weak);
1200 break;
1201 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1202 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1203 term->val.num ? 1 : 0, term->weak);
1204 break;
1205 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1206 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1207 term->val.num ? 0 : 1, term->weak);
1208 break;
1209 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1210 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);
1211 break;
1212 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1213 ADD_CONFIG_TERM_VAL(PERCORE, percore,
1214 term->val.num ? true : false, term->weak);
1215 break;
1216 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1217 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
1218 term->val.num ? 1 : 0, term->weak);
1219 break;
1220 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1221 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
1222 term->val.num, term->weak);
1223 break;
1224 case PARSE_EVENTS__TERM_TYPE_USER:
1225 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1226 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1227 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1228 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1229 case PARSE_EVENTS__TERM_TYPE_NAME:
1230 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1231 case PARSE_EVENTS__TERM_TYPE_RAW:
1232 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1233 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1234 default:
1235 break;
1236 }
1237 }
1238 return 0;
1239}
1240
1241/*
1242 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for
1243 * each bit of attr->config that the user has changed.
1244 */
1245static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config,
1246 struct list_head *head_terms)
1247{
1248 struct parse_events_term *term;
1249 u64 bits = 0;
1250 int type;
1251
1252 list_for_each_entry(term, &head_config->terms, list) {
1253 switch (term->type_term) {
1254 case PARSE_EVENTS__TERM_TYPE_USER:
1255 type = perf_pmu__format_type(pmu, term->config);
1256 if (type != PERF_PMU_FORMAT_VALUE_CONFIG)
1257 continue;
1258 bits |= perf_pmu__format_bits(pmu, term->config);
1259 break;
1260 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1261 bits = ~(u64)0;
1262 break;
1263 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1264 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1265 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1266 case PARSE_EVENTS__TERM_TYPE_NAME:
1267 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1268 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1269 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1270 case PARSE_EVENTS__TERM_TYPE_TIME:
1271 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1272 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1273 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1274 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1275 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1276 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1277 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1278 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1279 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1280 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1281 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1282 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1283 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1284 case PARSE_EVENTS__TERM_TYPE_RAW:
1285 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1286 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1287 default:
1288 break;
1289 }
1290 }
1291
1292 if (bits)
1293 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);
1294
1295#undef ADD_CONFIG_TERM
1296 return 0;
1297}
1298
1299int parse_events_add_tracepoint(struct parse_events_state *parse_state,
1300 struct list_head *list,
1301 const char *sys, const char *event,
1302 struct parse_events_error *err,
1303 struct parse_events_terms *head_config, void *loc_)
1304{
1305 YYLTYPE *loc = loc_;
1306#ifdef HAVE_LIBTRACEEVENT
1307 if (head_config) {
1308 struct perf_event_attr attr;
1309
1310 if (config_attr(&attr, head_config, err,
1311 config_term_tracepoint))
1312 return -EINVAL;
1313 }
1314
1315 if (strpbrk(sys, "*?"))
1316 return add_tracepoint_multi_sys(parse_state, list, sys, event,
1317 err, head_config, loc);
1318 else
1319 return add_tracepoint_event(parse_state, list, sys, event,
1320 err, head_config, loc);
1321#else
1322 (void)parse_state;
1323 (void)list;
1324 (void)sys;
1325 (void)event;
1326 (void)head_config;
1327 parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"),
1328 strdup("libtraceevent is necessary for tracepoint support"));
1329 return -1;
1330#endif
1331}
1332
1333static int __parse_events_add_numeric(struct parse_events_state *parse_state,
1334 struct list_head *list,
1335 struct perf_pmu *pmu, u32 type, u32 extended_type,
1336 u64 config, const struct parse_events_terms *head_config)
1337{
1338 struct perf_event_attr attr;
1339 LIST_HEAD(config_terms);
1340 const char *name, *metric_id;
1341 int ret;
1342
1343 memset(&attr, 0, sizeof(attr));
1344 attr.type = type;
1345 attr.config = config;
1346 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) {
1347 assert(perf_pmus__supports_extended_type());
1348 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT;
1349 }
1350
1351 if (head_config) {
1352 if (config_attr(&attr, head_config, parse_state->error,
1353 config_term_common))
1354 return -EINVAL;
1355
1356 if (get_config_terms(head_config, &config_terms))
1357 return -ENOMEM;
1358 }
1359
1360 name = get_config_name(head_config);
1361 metric_id = get_config_metric_id(head_config);
1362 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name,
1363 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
1364 /*cpu_list=*/NULL, /*alternate_hw_config=*/PERF_COUNT_HW_MAX
1365 ) == NULL ? -ENOMEM : 0;
1366 free_config_terms(&config_terms);
1367 return ret;
1368}
1369
1370int parse_events_add_numeric(struct parse_events_state *parse_state,
1371 struct list_head *list,
1372 u32 type, u64 config,
1373 const struct parse_events_terms *head_config,
1374 bool wildcard)
1375{
1376 struct perf_pmu *pmu = NULL;
1377 bool found_supported = false;
1378
1379 /* Wildcards on numeric values are only supported by core PMUs. */
1380 if (wildcard && perf_pmus__supports_extended_type()) {
1381 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
1382 int ret;
1383
1384 found_supported = true;
1385 if (parse_events__filter_pmu(parse_state, pmu))
1386 continue;
1387
1388 ret = __parse_events_add_numeric(parse_state, list, pmu,
1389 type, pmu->type,
1390 config, head_config);
1391 if (ret)
1392 return ret;
1393 }
1394 if (found_supported)
1395 return 0;
1396 }
1397 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type),
1398 type, /*extended_type=*/0, config, head_config);
1399}
1400
1401static bool config_term_percore(struct list_head *config_terms)
1402{
1403 struct evsel_config_term *term;
1404
1405 list_for_each_entry(term, config_terms, list) {
1406 if (term->type == EVSEL__CONFIG_TERM_PERCORE)
1407 return term->val.percore;
1408 }
1409
1410 return false;
1411}
1412
1413static int parse_events_add_pmu(struct parse_events_state *parse_state,
1414 struct list_head *list, struct perf_pmu *pmu,
1415 const struct parse_events_terms *const_parsed_terms,
1416 bool auto_merge_stats, u64 alternate_hw_config)
1417{
1418 struct perf_event_attr attr;
1419 struct perf_pmu_info info;
1420 struct evsel *evsel;
1421 struct parse_events_error *err = parse_state->error;
1422 LIST_HEAD(config_terms);
1423 struct parse_events_terms parsed_terms;
1424 bool alias_rewrote_terms = false;
1425
1426 if (verbose > 1) {
1427 struct strbuf sb;
1428
1429 strbuf_init(&sb, /*hint=*/ 0);
1430 if (pmu->selectable && const_parsed_terms &&
1431 list_empty(&const_parsed_terms->terms)) {
1432 strbuf_addf(&sb, "%s//", pmu->name);
1433 } else {
1434 strbuf_addf(&sb, "%s/", pmu->name);
1435 parse_events_terms__to_strbuf(const_parsed_terms, &sb);
1436 strbuf_addch(&sb, '/');
1437 }
1438 fprintf(stderr, "Attempt to add: %s\n", sb.buf);
1439 strbuf_release(&sb);
1440 }
1441
1442 memset(&attr, 0, sizeof(attr));
1443 if (pmu->perf_event_attr_init_default)
1444 pmu->perf_event_attr_init_default(pmu, &attr);
1445
1446 attr.type = pmu->type;
1447
1448 if (!const_parsed_terms || list_empty(&const_parsed_terms->terms)) {
1449 evsel = __add_event(list, &parse_state->idx, &attr,
1450 /*init_attr=*/true, /*name=*/NULL,
1451 /*metric_id=*/NULL, pmu,
1452 /*config_terms=*/NULL, auto_merge_stats,
1453 /*cpu_list=*/NULL, alternate_hw_config);
1454 return evsel ? 0 : -ENOMEM;
1455 }
1456
1457 parse_events_terms__init(&parsed_terms);
1458 if (const_parsed_terms) {
1459 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1460
1461 if (ret)
1462 return ret;
1463 }
1464 fix_raw(&parsed_terms, pmu);
1465
1466 /* Configure attr/terms with a known PMU, this will set hardcoded terms. */
1467 if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1468 parse_events_terms__exit(&parsed_terms);
1469 return -EINVAL;
1470 }
1471
1472 /* Look for event names in the terms and rewrite into format based terms. */
1473 if (perf_pmu__check_alias(pmu, &parsed_terms,
1474 &info, &alias_rewrote_terms,
1475 &alternate_hw_config, err)) {
1476 parse_events_terms__exit(&parsed_terms);
1477 return -EINVAL;
1478 }
1479
1480 if (verbose > 1) {
1481 struct strbuf sb;
1482
1483 strbuf_init(&sb, /*hint=*/ 0);
1484 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1485 fprintf(stderr, "..after resolving event: %s/%s/\n", pmu->name, sb.buf);
1486 strbuf_release(&sb);
1487 }
1488
1489 /* Configure attr/terms again if an alias was expanded. */
1490 if (alias_rewrote_terms &&
1491 config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1492 parse_events_terms__exit(&parsed_terms);
1493 return -EINVAL;
1494 }
1495
1496 if (get_config_terms(&parsed_terms, &config_terms)) {
1497 parse_events_terms__exit(&parsed_terms);
1498 return -ENOMEM;
1499 }
1500
1501 /*
1502 * When using default config, record which bits of attr->config were
1503 * changed by the user.
1504 */
1505 if (pmu->perf_event_attr_init_default &&
1506 get_config_chgs(pmu, &parsed_terms, &config_terms)) {
1507 parse_events_terms__exit(&parsed_terms);
1508 return -ENOMEM;
1509 }
1510
1511 /* Skip configuring hard coded terms that were applied by config_attr. */
1512 if (perf_pmu__config(pmu, &attr, &parsed_terms, /*apply_hardcoded=*/false,
1513 parse_state->error)) {
1514 free_config_terms(&config_terms);
1515 parse_events_terms__exit(&parsed_terms);
1516 return -EINVAL;
1517 }
1518
1519 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true,
1520 get_config_name(&parsed_terms),
1521 get_config_metric_id(&parsed_terms), pmu,
1522 &config_terms, auto_merge_stats, /*cpu_list=*/NULL,
1523 alternate_hw_config);
1524 if (!evsel) {
1525 parse_events_terms__exit(&parsed_terms);
1526 return -ENOMEM;
1527 }
1528
1529 if (evsel->name)
1530 evsel->use_config_name = true;
1531
1532 evsel->percore = config_term_percore(&evsel->config_terms);
1533
1534 parse_events_terms__exit(&parsed_terms);
1535 free((char *)evsel->unit);
1536 evsel->unit = strdup(info.unit);
1537 evsel->scale = info.scale;
1538 evsel->per_pkg = info.per_pkg;
1539 evsel->snapshot = info.snapshot;
1540 return 0;
1541}
1542
1543int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1544 const char *event_name, u64 hw_config,
1545 const struct parse_events_terms *const_parsed_terms,
1546 struct list_head **listp, void *loc_)
1547{
1548 struct parse_events_term *term;
1549 struct list_head *list = NULL;
1550 struct perf_pmu *pmu = NULL;
1551 YYLTYPE *loc = loc_;
1552 int ok = 0;
1553 const char *config;
1554 struct parse_events_terms parsed_terms;
1555
1556 *listp = NULL;
1557
1558 parse_events_terms__init(&parsed_terms);
1559 if (const_parsed_terms) {
1560 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1561
1562 if (ret)
1563 return ret;
1564 }
1565
1566 config = strdup(event_name);
1567 if (!config)
1568 goto out_err;
1569
1570 if (parse_events_term__num(&term,
1571 PARSE_EVENTS__TERM_TYPE_USER,
1572 config, /*num=*/1, /*novalue=*/true,
1573 loc, /*loc_val=*/NULL) < 0) {
1574 zfree(&config);
1575 goto out_err;
1576 }
1577 list_add_tail(&term->list, &parsed_terms.terms);
1578
1579 /* Add it for all PMUs that support the alias */
1580 list = malloc(sizeof(struct list_head));
1581 if (!list)
1582 goto out_err;
1583
1584 INIT_LIST_HEAD(list);
1585
1586 while ((pmu = perf_pmus__scan(pmu)) != NULL) {
1587 bool auto_merge_stats;
1588
1589 if (parse_events__filter_pmu(parse_state, pmu))
1590 continue;
1591
1592 if (!perf_pmu__have_event(pmu, event_name))
1593 continue;
1594
1595 auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
1596 if (!parse_events_add_pmu(parse_state, list, pmu,
1597 &parsed_terms, auto_merge_stats, hw_config)) {
1598 struct strbuf sb;
1599
1600 strbuf_init(&sb, /*hint=*/ 0);
1601 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1602 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf);
1603 strbuf_release(&sb);
1604 ok++;
1605 }
1606 }
1607
1608 if (parse_state->fake_pmu) {
1609 if (!parse_events_add_pmu(parse_state, list, perf_pmus__fake_pmu(), &parsed_terms,
1610 /*auto_merge_stats=*/true, hw_config)) {
1611 struct strbuf sb;
1612
1613 strbuf_init(&sb, /*hint=*/ 0);
1614 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1615 pr_debug("%s -> fake/%s/\n", event_name, sb.buf);
1616 strbuf_release(&sb);
1617 ok++;
1618 }
1619 }
1620
1621out_err:
1622 parse_events_terms__exit(&parsed_terms);
1623 if (ok)
1624 *listp = list;
1625 else
1626 free(list);
1627
1628 return ok ? 0 : -1;
1629}
1630
1631int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state,
1632 const char *event_or_pmu,
1633 const struct parse_events_terms *const_parsed_terms,
1634 struct list_head **listp,
1635 void *loc_)
1636{
1637 YYLTYPE *loc = loc_;
1638 struct perf_pmu *pmu;
1639 int ok = 0;
1640 char *help;
1641
1642 *listp = malloc(sizeof(**listp));
1643 if (!*listp)
1644 return -ENOMEM;
1645
1646 INIT_LIST_HEAD(*listp);
1647
1648 /* Attempt to add to list assuming event_or_pmu is a PMU name. */
1649 pmu = perf_pmus__find(event_or_pmu);
1650 if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms,
1651 /*auto_merge_stats=*/false,
1652 /*alternate_hw_config=*/PERF_COUNT_HW_MAX))
1653 return 0;
1654
1655 if (parse_state->fake_pmu) {
1656 if (!parse_events_add_pmu(parse_state, *listp, perf_pmus__fake_pmu(),
1657 const_parsed_terms,
1658 /*auto_merge_stats=*/false,
1659 /*alternate_hw_config=*/PERF_COUNT_HW_MAX))
1660 return 0;
1661 }
1662
1663 pmu = NULL;
1664 /* Failed to add, try wildcard expansion of event_or_pmu as a PMU name. */
1665 while ((pmu = perf_pmus__scan(pmu)) != NULL) {
1666 if (!parse_events__filter_pmu(parse_state, pmu) &&
1667 perf_pmu__match(pmu, event_or_pmu)) {
1668 bool auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
1669
1670 if (!parse_events_add_pmu(parse_state, *listp, pmu,
1671 const_parsed_terms,
1672 auto_merge_stats,
1673 /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) {
1674 ok++;
1675 parse_state->wild_card_pmus = true;
1676 }
1677 }
1678 }
1679 if (ok)
1680 return 0;
1681
1682 /* Failure to add, assume event_or_pmu is an event name. */
1683 zfree(listp);
1684 if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, PERF_COUNT_HW_MAX,
1685 const_parsed_terms, listp, loc))
1686 return 0;
1687
1688 if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0)
1689 help = NULL;
1690 parse_events_error__handle(parse_state->error, loc->first_column,
1691 strdup("Bad event or PMU"),
1692 help);
1693 zfree(listp);
1694 return -EINVAL;
1695}
1696
1697void parse_events__set_leader(char *name, struct list_head *list)
1698{
1699 struct evsel *leader;
1700
1701 if (list_empty(list)) {
1702 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1703 return;
1704 }
1705
1706 leader = list_first_entry(list, struct evsel, core.node);
1707 __perf_evlist__set_leader(list, &leader->core);
1708 zfree(&leader->group_name);
1709 leader->group_name = name;
1710}
1711
1712static int parse_events__modifier_list(struct parse_events_state *parse_state,
1713 YYLTYPE *loc,
1714 struct list_head *list,
1715 struct parse_events_modifier mod,
1716 bool group)
1717{
1718 struct evsel *evsel;
1719
1720 if (!group && mod.weak) {
1721 parse_events_error__handle(parse_state->error, loc->first_column,
1722 strdup("Weak modifier is for use with groups"), NULL);
1723 return -EINVAL;
1724 }
1725
1726 __evlist__for_each_entry(list, evsel) {
1727 /* Translate modifiers into the equivalent evsel excludes. */
1728 int eu = group ? evsel->core.attr.exclude_user : 0;
1729 int ek = group ? evsel->core.attr.exclude_kernel : 0;
1730 int eh = group ? evsel->core.attr.exclude_hv : 0;
1731 int eH = group ? evsel->core.attr.exclude_host : 0;
1732 int eG = group ? evsel->core.attr.exclude_guest : 0;
1733 int exclude = eu | ek | eh;
1734 int exclude_GH = group ? evsel->exclude_GH : 0;
1735
1736 if (mod.user) {
1737 if (!exclude)
1738 exclude = eu = ek = eh = 1;
1739 if (!exclude_GH && !perf_guest && exclude_GH_default)
1740 eG = 1;
1741 eu = 0;
1742 }
1743 if (mod.kernel) {
1744 if (!exclude)
1745 exclude = eu = ek = eh = 1;
1746 ek = 0;
1747 }
1748 if (mod.hypervisor) {
1749 if (!exclude)
1750 exclude = eu = ek = eh = 1;
1751 eh = 0;
1752 }
1753 if (mod.guest) {
1754 if (!exclude_GH)
1755 exclude_GH = eG = eH = 1;
1756 eG = 0;
1757 }
1758 if (mod.host) {
1759 if (!exclude_GH)
1760 exclude_GH = eG = eH = 1;
1761 eH = 0;
1762 }
1763 evsel->core.attr.exclude_user = eu;
1764 evsel->core.attr.exclude_kernel = ek;
1765 evsel->core.attr.exclude_hv = eh;
1766 evsel->core.attr.exclude_host = eH;
1767 evsel->core.attr.exclude_guest = eG;
1768 evsel->exclude_GH = exclude_GH;
1769
1770 /* Simple modifiers copied to the evsel. */
1771 if (mod.precise) {
1772 u8 precise = evsel->core.attr.precise_ip + mod.precise;
1773 /*
1774 * precise ip:
1775 *
1776 * 0 - SAMPLE_IP can have arbitrary skid
1777 * 1 - SAMPLE_IP must have constant skid
1778 * 2 - SAMPLE_IP requested to have 0 skid
1779 * 3 - SAMPLE_IP must have 0 skid
1780 *
1781 * See also PERF_RECORD_MISC_EXACT_IP
1782 */
1783 if (precise > 3) {
1784 char *help;
1785
1786 if (asprintf(&help,
1787 "Maximum combined precise value is 3, adding precision to \"%s\"",
1788 evsel__name(evsel)) > 0) {
1789 parse_events_error__handle(parse_state->error,
1790 loc->first_column,
1791 help, NULL);
1792 }
1793 return -EINVAL;
1794 }
1795 evsel->core.attr.precise_ip = precise;
1796 }
1797 if (mod.precise_max)
1798 evsel->precise_max = 1;
1799 if (mod.non_idle)
1800 evsel->core.attr.exclude_idle = 1;
1801 if (mod.sample_read)
1802 evsel->sample_read = 1;
1803 if (mod.pinned && evsel__is_group_leader(evsel))
1804 evsel->core.attr.pinned = 1;
1805 if (mod.exclusive && evsel__is_group_leader(evsel))
1806 evsel->core.attr.exclusive = 1;
1807 if (mod.weak)
1808 evsel->weak_group = true;
1809 if (mod.bpf)
1810 evsel->bpf_counter = true;
1811 if (mod.retire_lat)
1812 evsel->retire_lat = true;
1813 }
1814 return 0;
1815}
1816
1817int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc,
1818 struct list_head *list,
1819 struct parse_events_modifier mod)
1820{
1821 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true);
1822}
1823
1824int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc,
1825 struct list_head *list,
1826 struct parse_events_modifier mod)
1827{
1828 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false);
1829}
1830
1831int parse_events__set_default_name(struct list_head *list, char *name)
1832{
1833 struct evsel *evsel;
1834 bool used_name = false;
1835
1836 __evlist__for_each_entry(list, evsel) {
1837 if (!evsel->name) {
1838 evsel->name = used_name ? strdup(name) : name;
1839 used_name = true;
1840 if (!evsel->name)
1841 return -ENOMEM;
1842 }
1843 }
1844 if (!used_name)
1845 free(name);
1846 return 0;
1847}
1848
1849static int parse_events__scanner(const char *str,
1850 FILE *input,
1851 struct parse_events_state *parse_state)
1852{
1853 YY_BUFFER_STATE buffer;
1854 void *scanner;
1855 int ret;
1856
1857 ret = parse_events_lex_init_extra(parse_state, &scanner);
1858 if (ret)
1859 return ret;
1860
1861 if (str)
1862 buffer = parse_events__scan_string(str, scanner);
1863 else
1864 parse_events_set_in(input, scanner);
1865
1866#ifdef PARSER_DEBUG
1867 parse_events_debug = 1;
1868 parse_events_set_debug(1, scanner);
1869#endif
1870 ret = parse_events_parse(parse_state, scanner);
1871
1872 if (str) {
1873 parse_events__flush_buffer(buffer, scanner);
1874 parse_events__delete_buffer(buffer, scanner);
1875 }
1876 parse_events_lex_destroy(scanner);
1877 return ret;
1878}
1879
1880/*
1881 * parse event config string, return a list of event terms.
1882 */
1883int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input)
1884{
1885 struct parse_events_state parse_state = {
1886 .terms = NULL,
1887 .stoken = PE_START_TERMS,
1888 };
1889 int ret;
1890
1891 ret = parse_events__scanner(str, input, &parse_state);
1892 if (!ret)
1893 list_splice(&parse_state.terms->terms, &terms->terms);
1894
1895 zfree(&parse_state.terms);
1896 return ret;
1897}
1898
1899static int evsel__compute_group_pmu_name(struct evsel *evsel,
1900 const struct list_head *head)
1901{
1902 struct evsel *leader = evsel__leader(evsel);
1903 struct evsel *pos;
1904 const char *group_pmu_name;
1905 struct perf_pmu *pmu = evsel__find_pmu(evsel);
1906
1907 if (!pmu) {
1908 /*
1909 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU
1910 * is a core PMU, but in heterogeneous systems this is
1911 * unknown. For now pick the first core PMU.
1912 */
1913 pmu = perf_pmus__scan_core(NULL);
1914 }
1915 if (!pmu) {
1916 pr_debug("No PMU found for '%s'\n", evsel__name(evsel));
1917 return -EINVAL;
1918 }
1919 group_pmu_name = pmu->name;
1920 /*
1921 * Software events may be in a group with other uncore PMU events. Use
1922 * the pmu_name of the first non-software event to avoid breaking the
1923 * software event out of the group.
1924 *
1925 * Aux event leaders, like intel_pt, expect a group with events from
1926 * other PMUs, so substitute the AUX event's PMU in this case.
1927 */
1928 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) {
1929 struct perf_pmu *leader_pmu = evsel__find_pmu(leader);
1930
1931 if (!leader_pmu) {
1932 /* As with determining pmu above. */
1933 leader_pmu = perf_pmus__scan_core(NULL);
1934 }
1935 /*
1936 * Starting with the leader, find the first event with a named
1937 * non-software PMU. for_each_group_(member|evsel) isn't used as
1938 * the list isn't yet sorted putting evsel's in the same group
1939 * together.
1940 */
1941 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) {
1942 group_pmu_name = leader_pmu->name;
1943 } else if (leader->core.nr_members > 1) {
1944 list_for_each_entry(pos, head, core.node) {
1945 struct perf_pmu *pos_pmu;
1946
1947 if (pos == leader || evsel__leader(pos) != leader)
1948 continue;
1949 pos_pmu = evsel__find_pmu(pos);
1950 if (!pos_pmu) {
1951 /* As with determining pmu above. */
1952 pos_pmu = perf_pmus__scan_core(NULL);
1953 }
1954 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) {
1955 group_pmu_name = pos_pmu->name;
1956 break;
1957 }
1958 }
1959 }
1960 }
1961 /* Record computed name. */
1962 evsel->group_pmu_name = strdup(group_pmu_name);
1963 return evsel->group_pmu_name ? 0 : -ENOMEM;
1964}
1965
1966__weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs)
1967{
1968 /* Order by insertion index. */
1969 return lhs->core.idx - rhs->core.idx;
1970}
1971
1972static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r)
1973{
1974 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node);
1975 const struct evsel *lhs = container_of(lhs_core, struct evsel, core);
1976 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node);
1977 const struct evsel *rhs = container_of(rhs_core, struct evsel, core);
1978 int *force_grouped_idx = _fg_idx;
1979 int lhs_sort_idx, rhs_sort_idx, ret;
1980 const char *lhs_pmu_name, *rhs_pmu_name;
1981 bool lhs_has_group, rhs_has_group;
1982
1983 /*
1984 * First sort by grouping/leader. Read the leader idx only if the evsel
1985 * is part of a group, by default ungrouped events will be sorted
1986 * relative to grouped events based on where the first ungrouped event
1987 * occurs. If both events don't have a group we want to fall-through to
1988 * the arch specific sorting, that can reorder and fix things like
1989 * Intel's topdown events.
1990 */
1991 if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) {
1992 lhs_has_group = true;
1993 lhs_sort_idx = lhs_core->leader->idx;
1994 } else {
1995 lhs_has_group = false;
1996 lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)
1997 ? *force_grouped_idx
1998 : lhs_core->idx;
1999 }
2000 if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) {
2001 rhs_has_group = true;
2002 rhs_sort_idx = rhs_core->leader->idx;
2003 } else {
2004 rhs_has_group = false;
2005 rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)
2006 ? *force_grouped_idx
2007 : rhs_core->idx;
2008 }
2009
2010 if (lhs_sort_idx != rhs_sort_idx)
2011 return lhs_sort_idx - rhs_sort_idx;
2012
2013 /* Group by PMU if there is a group. Groups can't span PMUs. */
2014 if (lhs_has_group && rhs_has_group) {
2015 lhs_pmu_name = lhs->group_pmu_name;
2016 rhs_pmu_name = rhs->group_pmu_name;
2017 ret = strcmp(lhs_pmu_name, rhs_pmu_name);
2018 if (ret)
2019 return ret;
2020 }
2021
2022 /* Architecture specific sorting. */
2023 return arch_evlist__cmp(lhs, rhs);
2024}
2025
2026static int parse_events__sort_events_and_fix_groups(struct list_head *list)
2027{
2028 int idx = 0, force_grouped_idx = -1;
2029 struct evsel *pos, *cur_leader = NULL;
2030 struct perf_evsel *cur_leaders_grp = NULL;
2031 bool idx_changed = false, cur_leader_force_grouped = false;
2032 int orig_num_leaders = 0, num_leaders = 0;
2033 int ret;
2034
2035 /*
2036 * Compute index to insert ungrouped events at. Place them where the
2037 * first ungrouped event appears.
2038 */
2039 list_for_each_entry(pos, list, core.node) {
2040 const struct evsel *pos_leader = evsel__leader(pos);
2041
2042 ret = evsel__compute_group_pmu_name(pos, list);
2043 if (ret)
2044 return ret;
2045
2046 if (pos == pos_leader)
2047 orig_num_leaders++;
2048
2049 /*
2050 * Ensure indexes are sequential, in particular for multiple
2051 * event lists being merged. The indexes are used to detect when
2052 * the user order is modified.
2053 */
2054 pos->core.idx = idx++;
2055
2056 /* Remember an index to sort all forced grouped events together to. */
2057 if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 &&
2058 arch_evsel__must_be_in_group(pos))
2059 force_grouped_idx = pos->core.idx;
2060 }
2061
2062 /* Sort events. */
2063 list_sort(&force_grouped_idx, list, evlist__cmp);
2064
2065 /*
2066 * Recompute groups, splitting for PMUs and adding groups for events
2067 * that require them.
2068 */
2069 idx = 0;
2070 list_for_each_entry(pos, list, core.node) {
2071 const struct evsel *pos_leader = evsel__leader(pos);
2072 const char *pos_pmu_name = pos->group_pmu_name;
2073 const char *cur_leader_pmu_name;
2074 bool pos_force_grouped = force_grouped_idx != -1 &&
2075 arch_evsel__must_be_in_group(pos);
2076
2077 /* Reset index and nr_members. */
2078 if (pos->core.idx != idx)
2079 idx_changed = true;
2080 pos->core.idx = idx++;
2081 pos->core.nr_members = 0;
2082
2083 /*
2084 * Set the group leader respecting the given groupings and that
2085 * groups can't span PMUs.
2086 */
2087 if (!cur_leader)
2088 cur_leader = pos;
2089
2090 cur_leader_pmu_name = cur_leader->group_pmu_name;
2091 if ((cur_leaders_grp != pos->core.leader &&
2092 (!pos_force_grouped || !cur_leader_force_grouped)) ||
2093 strcmp(cur_leader_pmu_name, pos_pmu_name)) {
2094 /* Event is for a different group/PMU than last. */
2095 cur_leader = pos;
2096 /*
2097 * Remember the leader's group before it is overwritten,
2098 * so that later events match as being in the same
2099 * group.
2100 */
2101 cur_leaders_grp = pos->core.leader;
2102 /*
2103 * Avoid forcing events into groups with events that
2104 * don't need to be in the group.
2105 */
2106 cur_leader_force_grouped = pos_force_grouped;
2107 }
2108 if (pos_leader != cur_leader) {
2109 /* The leader changed so update it. */
2110 evsel__set_leader(pos, cur_leader);
2111 }
2112 }
2113 list_for_each_entry(pos, list, core.node) {
2114 struct evsel *pos_leader = evsel__leader(pos);
2115
2116 if (pos == pos_leader)
2117 num_leaders++;
2118 pos_leader->core.nr_members++;
2119 }
2120 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0;
2121}
2122
2123int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter,
2124 struct parse_events_error *err, bool fake_pmu,
2125 bool warn_if_reordered, bool fake_tp)
2126{
2127 struct parse_events_state parse_state = {
2128 .list = LIST_HEAD_INIT(parse_state.list),
2129 .idx = evlist->core.nr_entries,
2130 .error = err,
2131 .stoken = PE_START_EVENTS,
2132 .fake_pmu = fake_pmu,
2133 .fake_tp = fake_tp,
2134 .pmu_filter = pmu_filter,
2135 .match_legacy_cache_terms = true,
2136 };
2137 int ret, ret2;
2138
2139 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state);
2140
2141 if (!ret && list_empty(&parse_state.list)) {
2142 WARN_ONCE(true, "WARNING: event parser found nothing\n");
2143 return -1;
2144 }
2145
2146 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list);
2147 if (ret2 < 0)
2148 return ret;
2149
2150 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus)
2151 pr_warning("WARNING: events were regrouped to match PMUs\n");
2152
2153 /*
2154 * Add list to the evlist even with errors to allow callers to clean up.
2155 */
2156 evlist__splice_list_tail(evlist, &parse_state.list);
2157
2158 if (!ret) {
2159 struct evsel *last;
2160
2161 last = evlist__last(evlist);
2162 last->cmdline_group_boundary = true;
2163
2164 return 0;
2165 }
2166
2167 /*
2168 * There are 2 users - builtin-record and builtin-test objects.
2169 * Both call evlist__delete in case of error, so we dont
2170 * need to bother.
2171 */
2172 return ret;
2173}
2174
2175int parse_event(struct evlist *evlist, const char *str)
2176{
2177 struct parse_events_error err;
2178 int ret;
2179
2180 parse_events_error__init(&err);
2181 ret = parse_events(evlist, str, &err);
2182 parse_events_error__exit(&err);
2183 return ret;
2184}
2185
2186struct parse_events_error_entry {
2187 /** @list: The list the error is part of. */
2188 struct list_head list;
2189 /** @idx: index in the parsed string */
2190 int idx;
2191 /** @str: string to display at the index */
2192 char *str;
2193 /** @help: optional help string */
2194 char *help;
2195};
2196
2197void parse_events_error__init(struct parse_events_error *err)
2198{
2199 INIT_LIST_HEAD(&err->list);
2200}
2201
2202void parse_events_error__exit(struct parse_events_error *err)
2203{
2204 struct parse_events_error_entry *pos, *tmp;
2205
2206 list_for_each_entry_safe(pos, tmp, &err->list, list) {
2207 zfree(&pos->str);
2208 zfree(&pos->help);
2209 list_del_init(&pos->list);
2210 free(pos);
2211 }
2212}
2213
2214void parse_events_error__handle(struct parse_events_error *err, int idx,
2215 char *str, char *help)
2216{
2217 struct parse_events_error_entry *entry;
2218
2219 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n"))
2220 goto out_free;
2221
2222 entry = zalloc(sizeof(*entry));
2223 if (!entry) {
2224 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n",
2225 str, help ?: "<no help>");
2226 goto out_free;
2227 }
2228 entry->idx = idx;
2229 entry->str = str;
2230 entry->help = help;
2231 list_add(&entry->list, &err->list);
2232 return;
2233out_free:
2234 free(str);
2235 free(help);
2236}
2237
2238#define MAX_WIDTH 1000
2239static int get_term_width(void)
2240{
2241 struct winsize ws;
2242
2243 get_term_dimensions(&ws);
2244 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
2245}
2246
2247static void __parse_events_error__print(int err_idx, const char *err_str,
2248 const char *err_help, const char *event)
2249{
2250 const char *str = "invalid or unsupported event: ";
2251 char _buf[MAX_WIDTH];
2252 char *buf = (char *) event;
2253 int idx = 0;
2254 if (err_str) {
2255 /* -2 for extra '' in the final fprintf */
2256 int width = get_term_width() - 2;
2257 int len_event = strlen(event);
2258 int len_str, max_len, cut = 0;
2259
2260 /*
2261 * Maximum error index indent, we will cut
2262 * the event string if it's bigger.
2263 */
2264 int max_err_idx = 13;
2265
2266 /*
2267 * Let's be specific with the message when
2268 * we have the precise error.
2269 */
2270 str = "event syntax error: ";
2271 len_str = strlen(str);
2272 max_len = width - len_str;
2273
2274 buf = _buf;
2275
2276 /* We're cutting from the beginning. */
2277 if (err_idx > max_err_idx)
2278 cut = err_idx - max_err_idx;
2279
2280 strncpy(buf, event + cut, max_len);
2281
2282 /* Mark cut parts with '..' on both sides. */
2283 if (cut)
2284 buf[0] = buf[1] = '.';
2285
2286 if ((len_event - cut) > max_len) {
2287 buf[max_len - 1] = buf[max_len - 2] = '.';
2288 buf[max_len] = 0;
2289 }
2290
2291 idx = len_str + err_idx - cut;
2292 }
2293
2294 fprintf(stderr, "%s'%s'\n", str, buf);
2295 if (idx) {
2296 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);
2297 if (err_help)
2298 fprintf(stderr, "\n%s\n", err_help);
2299 }
2300}
2301
2302void parse_events_error__print(const struct parse_events_error *err,
2303 const char *event)
2304{
2305 struct parse_events_error_entry *pos;
2306 bool first = true;
2307
2308 list_for_each_entry(pos, &err->list, list) {
2309 if (!first)
2310 fputs("\n", stderr);
2311 __parse_events_error__print(pos->idx, pos->str, pos->help, event);
2312 first = false;
2313 }
2314}
2315
2316/*
2317 * In the list of errors err, do any of the error strings (str) contain the
2318 * given needle string?
2319 */
2320bool parse_events_error__contains(const struct parse_events_error *err,
2321 const char *needle)
2322{
2323 struct parse_events_error_entry *pos;
2324
2325 list_for_each_entry(pos, &err->list, list) {
2326 if (strstr(pos->str, needle) != NULL)
2327 return true;
2328 }
2329 return false;
2330}
2331
2332#undef MAX_WIDTH
2333
2334int parse_events_option(const struct option *opt, const char *str,
2335 int unset __maybe_unused)
2336{
2337 struct parse_events_option_args *args = opt->value;
2338 struct parse_events_error err;
2339 int ret;
2340
2341 parse_events_error__init(&err);
2342 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err,
2343 /*fake_pmu=*/false, /*warn_if_reordered=*/true,
2344 /*fake_tp=*/false);
2345
2346 if (ret) {
2347 parse_events_error__print(&err, str);
2348 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2349 }
2350 parse_events_error__exit(&err);
2351
2352 return ret;
2353}
2354
2355int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)
2356{
2357 struct parse_events_option_args *args = opt->value;
2358 int ret;
2359
2360 if (*args->evlistp == NULL) {
2361 *args->evlistp = evlist__new();
2362
2363 if (*args->evlistp == NULL) {
2364 fprintf(stderr, "Not enough memory to create evlist\n");
2365 return -1;
2366 }
2367 }
2368 ret = parse_events_option(opt, str, unset);
2369 if (ret) {
2370 evlist__delete(*args->evlistp);
2371 *args->evlistp = NULL;
2372 }
2373
2374 return ret;
2375}
2376
2377static int
2378foreach_evsel_in_last_glob(struct evlist *evlist,
2379 int (*func)(struct evsel *evsel,
2380 const void *arg),
2381 const void *arg)
2382{
2383 struct evsel *last = NULL;
2384 int err;
2385
2386 /*
2387 * Don't return when list_empty, give func a chance to report
2388 * error when it found last == NULL.
2389 *
2390 * So no need to WARN here, let *func do this.
2391 */
2392 if (evlist->core.nr_entries > 0)
2393 last = evlist__last(evlist);
2394
2395 do {
2396 err = (*func)(last, arg);
2397 if (err)
2398 return -1;
2399 if (!last)
2400 return 0;
2401
2402 if (last->core.node.prev == &evlist->core.entries)
2403 return 0;
2404 last = list_entry(last->core.node.prev, struct evsel, core.node);
2405 } while (!last->cmdline_group_boundary);
2406
2407 return 0;
2408}
2409
2410static int set_filter(struct evsel *evsel, const void *arg)
2411{
2412 const char *str = arg;
2413 bool found = false;
2414 int nr_addr_filters = 0;
2415 struct perf_pmu *pmu = NULL;
2416
2417 if (evsel == NULL) {
2418 fprintf(stderr,
2419 "--filter option should follow a -e tracepoint or HW tracer option\n");
2420 return -1;
2421 }
2422
2423 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2424 if (evsel__append_tp_filter(evsel, str) < 0) {
2425 fprintf(stderr,
2426 "not enough memory to hold filter string\n");
2427 return -1;
2428 }
2429
2430 return 0;
2431 }
2432
2433 while ((pmu = perf_pmus__scan(pmu)) != NULL)
2434 if (pmu->type == evsel->core.attr.type) {
2435 found = true;
2436 break;
2437 }
2438
2439 if (found)
2440 perf_pmu__scan_file(pmu, "nr_addr_filters",
2441 "%d", &nr_addr_filters);
2442
2443 if (!nr_addr_filters)
2444 return perf_bpf_filter__parse(&evsel->bpf_filters, str);
2445
2446 if (evsel__append_addr_filter(evsel, str) < 0) {
2447 fprintf(stderr,
2448 "not enough memory to hold filter string\n");
2449 return -1;
2450 }
2451
2452 return 0;
2453}
2454
2455int parse_filter(const struct option *opt, const char *str,
2456 int unset __maybe_unused)
2457{
2458 struct evlist *evlist = *(struct evlist **)opt->value;
2459
2460 return foreach_evsel_in_last_glob(evlist, set_filter,
2461 (const void *)str);
2462}
2463
2464static int add_exclude_perf_filter(struct evsel *evsel,
2465 const void *arg __maybe_unused)
2466{
2467 char new_filter[64];
2468
2469 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2470 fprintf(stderr,
2471 "--exclude-perf option should follow a -e tracepoint option\n");
2472 return -1;
2473 }
2474
2475 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2476
2477 if (evsel__append_tp_filter(evsel, new_filter) < 0) {
2478 fprintf(stderr,
2479 "not enough memory to hold filter string\n");
2480 return -1;
2481 }
2482
2483 return 0;
2484}
2485
2486int exclude_perf(const struct option *opt,
2487 const char *arg __maybe_unused,
2488 int unset __maybe_unused)
2489{
2490 struct evlist *evlist = *(struct evlist **)opt->value;
2491
2492 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2493 NULL);
2494}
2495
2496int parse_events__is_hardcoded_term(struct parse_events_term *term)
2497{
2498 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2499}
2500
2501static int new_term(struct parse_events_term **_term,
2502 struct parse_events_term *temp,
2503 char *str, u64 num)
2504{
2505 struct parse_events_term *term;
2506
2507 term = malloc(sizeof(*term));
2508 if (!term)
2509 return -ENOMEM;
2510
2511 *term = *temp;
2512 INIT_LIST_HEAD(&term->list);
2513 term->weak = false;
2514
2515 switch (term->type_val) {
2516 case PARSE_EVENTS__TERM_TYPE_NUM:
2517 term->val.num = num;
2518 break;
2519 case PARSE_EVENTS__TERM_TYPE_STR:
2520 term->val.str = str;
2521 break;
2522 default:
2523 free(term);
2524 return -EINVAL;
2525 }
2526
2527 *_term = term;
2528 return 0;
2529}
2530
2531int parse_events_term__num(struct parse_events_term **term,
2532 enum parse_events__term_type type_term,
2533 const char *config, u64 num,
2534 bool no_value,
2535 void *loc_term_, void *loc_val_)
2536{
2537 YYLTYPE *loc_term = loc_term_;
2538 YYLTYPE *loc_val = loc_val_;
2539
2540 struct parse_events_term temp = {
2541 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2542 .type_term = type_term,
2543 .config = config ? : strdup(parse_events__term_type_str(type_term)),
2544 .no_value = no_value,
2545 .err_term = loc_term ? loc_term->first_column : 0,
2546 .err_val = loc_val ? loc_val->first_column : 0,
2547 };
2548
2549 return new_term(term, &temp, /*str=*/NULL, num);
2550}
2551
2552int parse_events_term__str(struct parse_events_term **term,
2553 enum parse_events__term_type type_term,
2554 char *config, char *str,
2555 void *loc_term_, void *loc_val_)
2556{
2557 YYLTYPE *loc_term = loc_term_;
2558 YYLTYPE *loc_val = loc_val_;
2559
2560 struct parse_events_term temp = {
2561 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2562 .type_term = type_term,
2563 .config = config,
2564 .err_term = loc_term ? loc_term->first_column : 0,
2565 .err_val = loc_val ? loc_val->first_column : 0,
2566 };
2567
2568 return new_term(term, &temp, str, /*num=*/0);
2569}
2570
2571int parse_events_term__term(struct parse_events_term **term,
2572 enum parse_events__term_type term_lhs,
2573 enum parse_events__term_type term_rhs,
2574 void *loc_term, void *loc_val)
2575{
2576 return parse_events_term__str(term, term_lhs, NULL,
2577 strdup(parse_events__term_type_str(term_rhs)),
2578 loc_term, loc_val);
2579}
2580
2581int parse_events_term__clone(struct parse_events_term **new,
2582 const struct parse_events_term *term)
2583{
2584 char *str;
2585 struct parse_events_term temp = *term;
2586
2587 temp.used = false;
2588 if (term->config) {
2589 temp.config = strdup(term->config);
2590 if (!temp.config)
2591 return -ENOMEM;
2592 }
2593 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2594 return new_term(new, &temp, /*str=*/NULL, term->val.num);
2595
2596 str = strdup(term->val.str);
2597 if (!str) {
2598 zfree(&temp.config);
2599 return -ENOMEM;
2600 }
2601 return new_term(new, &temp, str, /*num=*/0);
2602}
2603
2604void parse_events_term__delete(struct parse_events_term *term)
2605{
2606 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
2607 zfree(&term->val.str);
2608
2609 zfree(&term->config);
2610 free(term);
2611}
2612
2613static int parse_events_terms__copy(const struct parse_events_terms *src,
2614 struct parse_events_terms *dest)
2615{
2616 struct parse_events_term *term;
2617
2618 list_for_each_entry (term, &src->terms, list) {
2619 struct parse_events_term *n;
2620 int ret;
2621
2622 ret = parse_events_term__clone(&n, term);
2623 if (ret)
2624 return ret;
2625
2626 list_add_tail(&n->list, &dest->terms);
2627 }
2628 return 0;
2629}
2630
2631void parse_events_terms__init(struct parse_events_terms *terms)
2632{
2633 INIT_LIST_HEAD(&terms->terms);
2634}
2635
2636void parse_events_terms__exit(struct parse_events_terms *terms)
2637{
2638 struct parse_events_term *term, *h;
2639
2640 list_for_each_entry_safe(term, h, &terms->terms, list) {
2641 list_del_init(&term->list);
2642 parse_events_term__delete(term);
2643 }
2644}
2645
2646void parse_events_terms__delete(struct parse_events_terms *terms)
2647{
2648 if (!terms)
2649 return;
2650 parse_events_terms__exit(terms);
2651 free(terms);
2652}
2653
2654int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb)
2655{
2656 struct parse_events_term *term;
2657 bool first = true;
2658
2659 if (!terms)
2660 return 0;
2661
2662 list_for_each_entry(term, &terms->terms, list) {
2663 int ret;
2664
2665 if (!first) {
2666 ret = strbuf_addch(sb, ',');
2667 if (ret < 0)
2668 return ret;
2669 }
2670 first = false;
2671
2672 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2673 if (term->no_value) {
2674 assert(term->val.num == 1);
2675 ret = strbuf_addf(sb, "%s", term->config);
2676 } else
2677 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num);
2678 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
2679 if (term->config) {
2680 ret = strbuf_addf(sb, "%s=", term->config);
2681 if (ret < 0)
2682 return ret;
2683 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) {
2684 ret = strbuf_addf(sb, "%s=",
2685 parse_events__term_type_str(term->type_term));
2686 if (ret < 0)
2687 return ret;
2688 }
2689 assert(!term->no_value);
2690 ret = strbuf_addf(sb, "%s", term->val.str);
2691 }
2692 if (ret < 0)
2693 return ret;
2694 }
2695 return 0;
2696}
2697
2698static void config_terms_list(char *buf, size_t buf_sz)
2699{
2700 int i;
2701 bool first = true;
2702
2703 buf[0] = '\0';
2704 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2705 const char *name = parse_events__term_type_str(i);
2706
2707 if (!config_term_avail(i, NULL))
2708 continue;
2709 if (!name)
2710 continue;
2711 if (name[0] == '<')
2712 continue;
2713
2714 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2715 return;
2716
2717 if (!first)
2718 strcat(buf, ",");
2719 else
2720 first = false;
2721 strcat(buf, name);
2722 }
2723}
2724
2725/*
2726 * Return string contains valid config terms of an event.
2727 * @additional_terms: For terms such as PMU sysfs terms.
2728 */
2729char *parse_events_formats_error_string(char *additional_terms)
2730{
2731 char *str;
2732 /* "no-overwrite" is the longest name */
2733 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2734 (sizeof("no-overwrite") - 1)];
2735
2736 config_terms_list(static_terms, sizeof(static_terms));
2737 /* valid terms */
2738 if (additional_terms) {
2739 if (asprintf(&str, "valid terms: %s,%s",
2740 additional_terms, static_terms) < 0)
2741 goto fail;
2742 } else {
2743 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2744 goto fail;
2745 }
2746 return str;
2747
2748fail:
2749 return NULL;
2750}
1#include <linux/hw_breakpoint.h>
2#include <linux/err.h>
3#include "util.h"
4#include "../perf.h"
5#include "evlist.h"
6#include "evsel.h"
7#include <subcmd/parse-options.h>
8#include "parse-events.h"
9#include <subcmd/exec-cmd.h>
10#include "string.h"
11#include "symbol.h"
12#include "cache.h"
13#include "header.h"
14#include "bpf-loader.h"
15#include "debug.h"
16#include <api/fs/tracing_path.h>
17#include "parse-events-bison.h"
18#define YY_EXTRA_TYPE int
19#include "parse-events-flex.h"
20#include "pmu.h"
21#include "thread_map.h"
22#include "cpumap.h"
23#include "asm/bug.h"
24
25#define MAX_NAME_LEN 100
26
27#ifdef PARSER_DEBUG
28extern int parse_events_debug;
29#endif
30int parse_events_parse(void *data, void *scanner);
31static int get_config_terms(struct list_head *head_config,
32 struct list_head *head_terms __maybe_unused);
33
34static struct perf_pmu_event_symbol *perf_pmu_events_list;
35/*
36 * The variable indicates the number of supported pmu event symbols.
37 * 0 means not initialized and ready to init
38 * -1 means failed to init, don't try anymore
39 * >0 is the number of supported pmu event symbols
40 */
41static int perf_pmu_events_list_num;
42
43struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
44 [PERF_COUNT_HW_CPU_CYCLES] = {
45 .symbol = "cpu-cycles",
46 .alias = "cycles",
47 },
48 [PERF_COUNT_HW_INSTRUCTIONS] = {
49 .symbol = "instructions",
50 .alias = "",
51 },
52 [PERF_COUNT_HW_CACHE_REFERENCES] = {
53 .symbol = "cache-references",
54 .alias = "",
55 },
56 [PERF_COUNT_HW_CACHE_MISSES] = {
57 .symbol = "cache-misses",
58 .alias = "",
59 },
60 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
61 .symbol = "branch-instructions",
62 .alias = "branches",
63 },
64 [PERF_COUNT_HW_BRANCH_MISSES] = {
65 .symbol = "branch-misses",
66 .alias = "",
67 },
68 [PERF_COUNT_HW_BUS_CYCLES] = {
69 .symbol = "bus-cycles",
70 .alias = "",
71 },
72 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
73 .symbol = "stalled-cycles-frontend",
74 .alias = "idle-cycles-frontend",
75 },
76 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
77 .symbol = "stalled-cycles-backend",
78 .alias = "idle-cycles-backend",
79 },
80 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
81 .symbol = "ref-cycles",
82 .alias = "",
83 },
84};
85
86struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
87 [PERF_COUNT_SW_CPU_CLOCK] = {
88 .symbol = "cpu-clock",
89 .alias = "",
90 },
91 [PERF_COUNT_SW_TASK_CLOCK] = {
92 .symbol = "task-clock",
93 .alias = "",
94 },
95 [PERF_COUNT_SW_PAGE_FAULTS] = {
96 .symbol = "page-faults",
97 .alias = "faults",
98 },
99 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
100 .symbol = "context-switches",
101 .alias = "cs",
102 },
103 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
104 .symbol = "cpu-migrations",
105 .alias = "migrations",
106 },
107 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
108 .symbol = "minor-faults",
109 .alias = "",
110 },
111 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
112 .symbol = "major-faults",
113 .alias = "",
114 },
115 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
116 .symbol = "alignment-faults",
117 .alias = "",
118 },
119 [PERF_COUNT_SW_EMULATION_FAULTS] = {
120 .symbol = "emulation-faults",
121 .alias = "",
122 },
123 [PERF_COUNT_SW_DUMMY] = {
124 .symbol = "dummy",
125 .alias = "",
126 },
127 [PERF_COUNT_SW_BPF_OUTPUT] = {
128 .symbol = "bpf-output",
129 .alias = "",
130 },
131};
132
133#define __PERF_EVENT_FIELD(config, name) \
134 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
135
136#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
137#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
138#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
139#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
140
141#define for_each_subsystem(sys_dir, sys_dirent) \
142 while ((sys_dirent = readdir(sys_dir)) != NULL) \
143 if (sys_dirent->d_type == DT_DIR && \
144 (strcmp(sys_dirent->d_name, ".")) && \
145 (strcmp(sys_dirent->d_name, "..")))
146
147static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
148{
149 char evt_path[MAXPATHLEN];
150 int fd;
151
152 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
153 sys_dir->d_name, evt_dir->d_name);
154 fd = open(evt_path, O_RDONLY);
155 if (fd < 0)
156 return -EINVAL;
157 close(fd);
158
159 return 0;
160}
161
162#define for_each_event(sys_dirent, evt_dir, evt_dirent) \
163 while ((evt_dirent = readdir(evt_dir)) != NULL) \
164 if (evt_dirent->d_type == DT_DIR && \
165 (strcmp(evt_dirent->d_name, ".")) && \
166 (strcmp(evt_dirent->d_name, "..")) && \
167 (!tp_event_has_id(sys_dirent, evt_dirent)))
168
169#define MAX_EVENT_LENGTH 512
170
171
172struct tracepoint_path *tracepoint_id_to_path(u64 config)
173{
174 struct tracepoint_path *path = NULL;
175 DIR *sys_dir, *evt_dir;
176 struct dirent *sys_dirent, *evt_dirent;
177 char id_buf[24];
178 int fd;
179 u64 id;
180 char evt_path[MAXPATHLEN];
181 char dir_path[MAXPATHLEN];
182
183 sys_dir = opendir(tracing_events_path);
184 if (!sys_dir)
185 return NULL;
186
187 for_each_subsystem(sys_dir, sys_dirent) {
188
189 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
190 sys_dirent->d_name);
191 evt_dir = opendir(dir_path);
192 if (!evt_dir)
193 continue;
194
195 for_each_event(sys_dirent, evt_dir, evt_dirent) {
196
197 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
198 evt_dirent->d_name);
199 fd = open(evt_path, O_RDONLY);
200 if (fd < 0)
201 continue;
202 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
203 close(fd);
204 continue;
205 }
206 close(fd);
207 id = atoll(id_buf);
208 if (id == config) {
209 closedir(evt_dir);
210 closedir(sys_dir);
211 path = zalloc(sizeof(*path));
212 path->system = malloc(MAX_EVENT_LENGTH);
213 if (!path->system) {
214 free(path);
215 return NULL;
216 }
217 path->name = malloc(MAX_EVENT_LENGTH);
218 if (!path->name) {
219 zfree(&path->system);
220 free(path);
221 return NULL;
222 }
223 strncpy(path->system, sys_dirent->d_name,
224 MAX_EVENT_LENGTH);
225 strncpy(path->name, evt_dirent->d_name,
226 MAX_EVENT_LENGTH);
227 return path;
228 }
229 }
230 closedir(evt_dir);
231 }
232
233 closedir(sys_dir);
234 return NULL;
235}
236
237struct tracepoint_path *tracepoint_name_to_path(const char *name)
238{
239 struct tracepoint_path *path = zalloc(sizeof(*path));
240 char *str = strchr(name, ':');
241
242 if (path == NULL || str == NULL) {
243 free(path);
244 return NULL;
245 }
246
247 path->system = strndup(name, str - name);
248 path->name = strdup(str+1);
249
250 if (path->system == NULL || path->name == NULL) {
251 zfree(&path->system);
252 zfree(&path->name);
253 free(path);
254 path = NULL;
255 }
256
257 return path;
258}
259
260const char *event_type(int type)
261{
262 switch (type) {
263 case PERF_TYPE_HARDWARE:
264 return "hardware";
265
266 case PERF_TYPE_SOFTWARE:
267 return "software";
268
269 case PERF_TYPE_TRACEPOINT:
270 return "tracepoint";
271
272 case PERF_TYPE_HW_CACHE:
273 return "hardware-cache";
274
275 default:
276 break;
277 }
278
279 return "unknown";
280}
281
282static int parse_events__is_name_term(struct parse_events_term *term)
283{
284 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
285}
286
287static char *get_config_name(struct list_head *head_terms)
288{
289 struct parse_events_term *term;
290
291 if (!head_terms)
292 return NULL;
293
294 list_for_each_entry(term, head_terms, list)
295 if (parse_events__is_name_term(term))
296 return term->val.str;
297
298 return NULL;
299}
300
301static struct perf_evsel *
302__add_event(struct list_head *list, int *idx,
303 struct perf_event_attr *attr,
304 char *name, struct cpu_map *cpus,
305 struct list_head *config_terms)
306{
307 struct perf_evsel *evsel;
308
309 event_attr_init(attr);
310
311 evsel = perf_evsel__new_idx(attr, (*idx)++);
312 if (!evsel)
313 return NULL;
314
315 evsel->cpus = cpu_map__get(cpus);
316 evsel->own_cpus = cpu_map__get(cpus);
317
318 if (name)
319 evsel->name = strdup(name);
320
321 if (config_terms)
322 list_splice(config_terms, &evsel->config_terms);
323
324 list_add_tail(&evsel->node, list);
325 return evsel;
326}
327
328static int add_event(struct list_head *list, int *idx,
329 struct perf_event_attr *attr, char *name,
330 struct list_head *config_terms)
331{
332 return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM;
333}
334
335static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
336{
337 int i, j;
338 int n, longest = -1;
339
340 for (i = 0; i < size; i++) {
341 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
342 n = strlen(names[i][j]);
343 if (n > longest && !strncasecmp(str, names[i][j], n))
344 longest = n;
345 }
346 if (longest > 0)
347 return i;
348 }
349
350 return -1;
351}
352
353typedef int config_term_func_t(struct perf_event_attr *attr,
354 struct parse_events_term *term,
355 struct parse_events_error *err);
356static int config_term_common(struct perf_event_attr *attr,
357 struct parse_events_term *term,
358 struct parse_events_error *err);
359static int config_attr(struct perf_event_attr *attr,
360 struct list_head *head,
361 struct parse_events_error *err,
362 config_term_func_t config_term);
363
364int parse_events_add_cache(struct list_head *list, int *idx,
365 char *type, char *op_result1, char *op_result2,
366 struct parse_events_error *err,
367 struct list_head *head_config)
368{
369 struct perf_event_attr attr;
370 LIST_HEAD(config_terms);
371 char name[MAX_NAME_LEN], *config_name;
372 int cache_type = -1, cache_op = -1, cache_result = -1;
373 char *op_result[2] = { op_result1, op_result2 };
374 int i, n;
375
376 /*
377 * No fallback - if we cannot get a clear cache type
378 * then bail out:
379 */
380 cache_type = parse_aliases(type, perf_evsel__hw_cache,
381 PERF_COUNT_HW_CACHE_MAX);
382 if (cache_type == -1)
383 return -EINVAL;
384
385 config_name = get_config_name(head_config);
386 n = snprintf(name, MAX_NAME_LEN, "%s", type);
387
388 for (i = 0; (i < 2) && (op_result[i]); i++) {
389 char *str = op_result[i];
390
391 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
392
393 if (cache_op == -1) {
394 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
395 PERF_COUNT_HW_CACHE_OP_MAX);
396 if (cache_op >= 0) {
397 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
398 return -EINVAL;
399 continue;
400 }
401 }
402
403 if (cache_result == -1) {
404 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
405 PERF_COUNT_HW_CACHE_RESULT_MAX);
406 if (cache_result >= 0)
407 continue;
408 }
409 }
410
411 /*
412 * Fall back to reads:
413 */
414 if (cache_op == -1)
415 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
416
417 /*
418 * Fall back to accesses:
419 */
420 if (cache_result == -1)
421 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
422
423 memset(&attr, 0, sizeof(attr));
424 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
425 attr.type = PERF_TYPE_HW_CACHE;
426
427 if (head_config) {
428 if (config_attr(&attr, head_config, err,
429 config_term_common))
430 return -EINVAL;
431
432 if (get_config_terms(head_config, &config_terms))
433 return -ENOMEM;
434 }
435 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
436}
437
438static void tracepoint_error(struct parse_events_error *e, int err,
439 char *sys, char *name)
440{
441 char help[BUFSIZ];
442
443 if (!e)
444 return;
445
446 /*
447 * We get error directly from syscall errno ( > 0),
448 * or from encoded pointer's error ( < 0).
449 */
450 err = abs(err);
451
452 switch (err) {
453 case EACCES:
454 e->str = strdup("can't access trace events");
455 break;
456 case ENOENT:
457 e->str = strdup("unknown tracepoint");
458 break;
459 default:
460 e->str = strdup("failed to add tracepoint");
461 break;
462 }
463
464 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
465 e->help = strdup(help);
466}
467
468static int add_tracepoint(struct list_head *list, int *idx,
469 char *sys_name, char *evt_name,
470 struct parse_events_error *err,
471 struct list_head *head_config)
472{
473 struct perf_evsel *evsel;
474
475 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
476 if (IS_ERR(evsel)) {
477 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
478 return PTR_ERR(evsel);
479 }
480
481 if (head_config) {
482 LIST_HEAD(config_terms);
483
484 if (get_config_terms(head_config, &config_terms))
485 return -ENOMEM;
486 list_splice(&config_terms, &evsel->config_terms);
487 }
488
489 list_add_tail(&evsel->node, list);
490 return 0;
491}
492
493static int add_tracepoint_multi_event(struct list_head *list, int *idx,
494 char *sys_name, char *evt_name,
495 struct parse_events_error *err,
496 struct list_head *head_config)
497{
498 char evt_path[MAXPATHLEN];
499 struct dirent *evt_ent;
500 DIR *evt_dir;
501 int ret = 0, found = 0;
502
503 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
504 evt_dir = opendir(evt_path);
505 if (!evt_dir) {
506 tracepoint_error(err, errno, sys_name, evt_name);
507 return -1;
508 }
509
510 while (!ret && (evt_ent = readdir(evt_dir))) {
511 if (!strcmp(evt_ent->d_name, ".")
512 || !strcmp(evt_ent->d_name, "..")
513 || !strcmp(evt_ent->d_name, "enable")
514 || !strcmp(evt_ent->d_name, "filter"))
515 continue;
516
517 if (!strglobmatch(evt_ent->d_name, evt_name))
518 continue;
519
520 found++;
521
522 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
523 err, head_config);
524 }
525
526 if (!found) {
527 tracepoint_error(err, ENOENT, sys_name, evt_name);
528 ret = -1;
529 }
530
531 closedir(evt_dir);
532 return ret;
533}
534
535static int add_tracepoint_event(struct list_head *list, int *idx,
536 char *sys_name, char *evt_name,
537 struct parse_events_error *err,
538 struct list_head *head_config)
539{
540 return strpbrk(evt_name, "*?") ?
541 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
542 err, head_config) :
543 add_tracepoint(list, idx, sys_name, evt_name,
544 err, head_config);
545}
546
547static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
548 char *sys_name, char *evt_name,
549 struct parse_events_error *err,
550 struct list_head *head_config)
551{
552 struct dirent *events_ent;
553 DIR *events_dir;
554 int ret = 0;
555
556 events_dir = opendir(tracing_events_path);
557 if (!events_dir) {
558 tracepoint_error(err, errno, sys_name, evt_name);
559 return -1;
560 }
561
562 while (!ret && (events_ent = readdir(events_dir))) {
563 if (!strcmp(events_ent->d_name, ".")
564 || !strcmp(events_ent->d_name, "..")
565 || !strcmp(events_ent->d_name, "enable")
566 || !strcmp(events_ent->d_name, "header_event")
567 || !strcmp(events_ent->d_name, "header_page"))
568 continue;
569
570 if (!strglobmatch(events_ent->d_name, sys_name))
571 continue;
572
573 ret = add_tracepoint_event(list, idx, events_ent->d_name,
574 evt_name, err, head_config);
575 }
576
577 closedir(events_dir);
578 return ret;
579}
580
581struct __add_bpf_event_param {
582 struct parse_events_evlist *data;
583 struct list_head *list;
584 struct list_head *head_config;
585};
586
587static int add_bpf_event(struct probe_trace_event *tev, int fd,
588 void *_param)
589{
590 LIST_HEAD(new_evsels);
591 struct __add_bpf_event_param *param = _param;
592 struct parse_events_evlist *evlist = param->data;
593 struct list_head *list = param->list;
594 struct perf_evsel *pos;
595 int err;
596
597 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
598 tev->group, tev->event, fd);
599
600 err = parse_events_add_tracepoint(&new_evsels, &evlist->idx, tev->group,
601 tev->event, evlist->error,
602 param->head_config);
603 if (err) {
604 struct perf_evsel *evsel, *tmp;
605
606 pr_debug("Failed to add BPF event %s:%s\n",
607 tev->group, tev->event);
608 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
609 list_del(&evsel->node);
610 perf_evsel__delete(evsel);
611 }
612 return err;
613 }
614 pr_debug("adding %s:%s\n", tev->group, tev->event);
615
616 list_for_each_entry(pos, &new_evsels, node) {
617 pr_debug("adding %s:%s to %p\n",
618 tev->group, tev->event, pos);
619 pos->bpf_fd = fd;
620 }
621 list_splice(&new_evsels, list);
622 return 0;
623}
624
625int parse_events_load_bpf_obj(struct parse_events_evlist *data,
626 struct list_head *list,
627 struct bpf_object *obj,
628 struct list_head *head_config)
629{
630 int err;
631 char errbuf[BUFSIZ];
632 struct __add_bpf_event_param param = {data, list, head_config};
633 static bool registered_unprobe_atexit = false;
634
635 if (IS_ERR(obj) || !obj) {
636 snprintf(errbuf, sizeof(errbuf),
637 "Internal error: load bpf obj with NULL");
638 err = -EINVAL;
639 goto errout;
640 }
641
642 /*
643 * Register atexit handler before calling bpf__probe() so
644 * bpf__probe() don't need to unprobe probe points its already
645 * created when failure.
646 */
647 if (!registered_unprobe_atexit) {
648 atexit(bpf__clear);
649 registered_unprobe_atexit = true;
650 }
651
652 err = bpf__probe(obj);
653 if (err) {
654 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
655 goto errout;
656 }
657
658 err = bpf__load(obj);
659 if (err) {
660 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
661 goto errout;
662 }
663
664 err = bpf__foreach_tev(obj, add_bpf_event, ¶m);
665 if (err) {
666 snprintf(errbuf, sizeof(errbuf),
667 "Attach events in BPF object failed");
668 goto errout;
669 }
670
671 return 0;
672errout:
673 data->error->help = strdup("(add -v to see detail)");
674 data->error->str = strdup(errbuf);
675 return err;
676}
677
678static int
679parse_events_config_bpf(struct parse_events_evlist *data,
680 struct bpf_object *obj,
681 struct list_head *head_config)
682{
683 struct parse_events_term *term;
684 int error_pos;
685
686 if (!head_config || list_empty(head_config))
687 return 0;
688
689 list_for_each_entry(term, head_config, list) {
690 char errbuf[BUFSIZ];
691 int err;
692
693 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
694 snprintf(errbuf, sizeof(errbuf),
695 "Invalid config term for BPF object");
696 errbuf[BUFSIZ - 1] = '\0';
697
698 data->error->idx = term->err_term;
699 data->error->str = strdup(errbuf);
700 return -EINVAL;
701 }
702
703 err = bpf__config_obj(obj, term, data->evlist, &error_pos);
704 if (err) {
705 bpf__strerror_config_obj(obj, term, data->evlist,
706 &error_pos, err, errbuf,
707 sizeof(errbuf));
708 data->error->help = strdup(
709"Hint:\tValid config terms:\n"
710" \tmap:[<arraymap>].value<indices>=[value]\n"
711" \tmap:[<eventmap>].event<indices>=[event]\n"
712"\n"
713" \twhere <indices> is something like [0,3...5] or [all]\n"
714" \t(add -v to see detail)");
715 data->error->str = strdup(errbuf);
716 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
717 data->error->idx = term->err_val;
718 else
719 data->error->idx = term->err_term + error_pos;
720 return err;
721 }
722 }
723 return 0;
724}
725
726/*
727 * Split config terms:
728 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
729 * 'call-graph=fp' is 'evt config', should be applied to each
730 * events in bpf.c.
731 * 'map:array.value[0]=1' is 'obj config', should be processed
732 * with parse_events_config_bpf.
733 *
734 * Move object config terms from the first list to obj_head_config.
735 */
736static void
737split_bpf_config_terms(struct list_head *evt_head_config,
738 struct list_head *obj_head_config)
739{
740 struct parse_events_term *term, *temp;
741
742 /*
743 * Currectly, all possible user config term
744 * belong to bpf object. parse_events__is_hardcoded_term()
745 * happends to be a good flag.
746 *
747 * See parse_events_config_bpf() and
748 * config_term_tracepoint().
749 */
750 list_for_each_entry_safe(term, temp, evt_head_config, list)
751 if (!parse_events__is_hardcoded_term(term))
752 list_move_tail(&term->list, obj_head_config);
753}
754
755int parse_events_load_bpf(struct parse_events_evlist *data,
756 struct list_head *list,
757 char *bpf_file_name,
758 bool source,
759 struct list_head *head_config)
760{
761 int err;
762 struct bpf_object *obj;
763 LIST_HEAD(obj_head_config);
764
765 if (head_config)
766 split_bpf_config_terms(head_config, &obj_head_config);
767
768 obj = bpf__prepare_load(bpf_file_name, source);
769 if (IS_ERR(obj)) {
770 char errbuf[BUFSIZ];
771
772 err = PTR_ERR(obj);
773
774 if (err == -ENOTSUP)
775 snprintf(errbuf, sizeof(errbuf),
776 "BPF support is not compiled");
777 else
778 bpf__strerror_prepare_load(bpf_file_name,
779 source,
780 -err, errbuf,
781 sizeof(errbuf));
782
783 data->error->help = strdup("(add -v to see detail)");
784 data->error->str = strdup(errbuf);
785 return err;
786 }
787
788 err = parse_events_load_bpf_obj(data, list, obj, head_config);
789 if (err)
790 return err;
791 err = parse_events_config_bpf(data, obj, &obj_head_config);
792
793 /*
794 * Caller doesn't know anything about obj_head_config,
795 * so combine them together again before returnning.
796 */
797 if (head_config)
798 list_splice_tail(&obj_head_config, head_config);
799 return err;
800}
801
802static int
803parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
804{
805 int i;
806
807 for (i = 0; i < 3; i++) {
808 if (!type || !type[i])
809 break;
810
811#define CHECK_SET_TYPE(bit) \
812do { \
813 if (attr->bp_type & bit) \
814 return -EINVAL; \
815 else \
816 attr->bp_type |= bit; \
817} while (0)
818
819 switch (type[i]) {
820 case 'r':
821 CHECK_SET_TYPE(HW_BREAKPOINT_R);
822 break;
823 case 'w':
824 CHECK_SET_TYPE(HW_BREAKPOINT_W);
825 break;
826 case 'x':
827 CHECK_SET_TYPE(HW_BREAKPOINT_X);
828 break;
829 default:
830 return -EINVAL;
831 }
832 }
833
834#undef CHECK_SET_TYPE
835
836 if (!attr->bp_type) /* Default */
837 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
838
839 return 0;
840}
841
842int parse_events_add_breakpoint(struct list_head *list, int *idx,
843 void *ptr, char *type, u64 len)
844{
845 struct perf_event_attr attr;
846
847 memset(&attr, 0, sizeof(attr));
848 attr.bp_addr = (unsigned long) ptr;
849
850 if (parse_breakpoint_type(type, &attr))
851 return -EINVAL;
852
853 /* Provide some defaults if len is not specified */
854 if (!len) {
855 if (attr.bp_type == HW_BREAKPOINT_X)
856 len = sizeof(long);
857 else
858 len = HW_BREAKPOINT_LEN_4;
859 }
860
861 attr.bp_len = len;
862
863 attr.type = PERF_TYPE_BREAKPOINT;
864 attr.sample_period = 1;
865
866 return add_event(list, idx, &attr, NULL, NULL);
867}
868
869static int check_type_val(struct parse_events_term *term,
870 struct parse_events_error *err,
871 int type)
872{
873 if (type == term->type_val)
874 return 0;
875
876 if (err) {
877 err->idx = term->err_val;
878 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
879 err->str = strdup("expected numeric value");
880 else
881 err->str = strdup("expected string value");
882 }
883 return -EINVAL;
884}
885
886/*
887 * Update according to parse-events.l
888 */
889static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
890 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
891 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
892 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
893 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
894 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
895 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
896 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
897 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
898 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
899 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
900 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
901 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
902 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
903};
904
905static bool config_term_shrinked;
906
907static bool
908config_term_avail(int term_type, struct parse_events_error *err)
909{
910 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
911 err->str = strdup("Invalid term_type");
912 return false;
913 }
914 if (!config_term_shrinked)
915 return true;
916
917 switch (term_type) {
918 case PARSE_EVENTS__TERM_TYPE_CONFIG:
919 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
920 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
921 case PARSE_EVENTS__TERM_TYPE_NAME:
922 return true;
923 default:
924 if (!err)
925 return false;
926
927 /* term_type is validated so indexing is safe */
928 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
929 config_term_names[term_type]) < 0)
930 err->str = NULL;
931 return false;
932 }
933}
934
935void parse_events__shrink_config_terms(void)
936{
937 config_term_shrinked = true;
938}
939
940static int config_term_common(struct perf_event_attr *attr,
941 struct parse_events_term *term,
942 struct parse_events_error *err)
943{
944#define CHECK_TYPE_VAL(type) \
945do { \
946 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
947 return -EINVAL; \
948} while (0)
949
950 switch (term->type_term) {
951 case PARSE_EVENTS__TERM_TYPE_CONFIG:
952 CHECK_TYPE_VAL(NUM);
953 attr->config = term->val.num;
954 break;
955 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
956 CHECK_TYPE_VAL(NUM);
957 attr->config1 = term->val.num;
958 break;
959 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
960 CHECK_TYPE_VAL(NUM);
961 attr->config2 = term->val.num;
962 break;
963 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
964 CHECK_TYPE_VAL(NUM);
965 break;
966 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
967 CHECK_TYPE_VAL(NUM);
968 break;
969 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
970 /*
971 * TODO uncomment when the field is available
972 * attr->branch_sample_type = term->val.num;
973 */
974 break;
975 case PARSE_EVENTS__TERM_TYPE_TIME:
976 CHECK_TYPE_VAL(NUM);
977 if (term->val.num > 1) {
978 err->str = strdup("expected 0 or 1");
979 err->idx = term->err_val;
980 return -EINVAL;
981 }
982 break;
983 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
984 CHECK_TYPE_VAL(STR);
985 break;
986 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
987 CHECK_TYPE_VAL(NUM);
988 break;
989 case PARSE_EVENTS__TERM_TYPE_INHERIT:
990 CHECK_TYPE_VAL(NUM);
991 break;
992 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
993 CHECK_TYPE_VAL(NUM);
994 break;
995 case PARSE_EVENTS__TERM_TYPE_NAME:
996 CHECK_TYPE_VAL(STR);
997 break;
998 default:
999 err->str = strdup("unknown term");
1000 err->idx = term->err_term;
1001 err->help = parse_events_formats_error_string(NULL);
1002 return -EINVAL;
1003 }
1004
1005 /*
1006 * Check term availbility after basic checking so
1007 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1008 *
1009 * If check availbility at the entry of this function,
1010 * user will see "'<sysfs term>' is not usable in 'perf stat'"
1011 * if an invalid config term is provided for legacy events
1012 * (for example, instructions/badterm/...), which is confusing.
1013 */
1014 if (!config_term_avail(term->type_term, err))
1015 return -EINVAL;
1016 return 0;
1017#undef CHECK_TYPE_VAL
1018}
1019
1020static int config_term_pmu(struct perf_event_attr *attr,
1021 struct parse_events_term *term,
1022 struct parse_events_error *err)
1023{
1024 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER)
1025 /*
1026 * Always succeed for sysfs terms, as we dont know
1027 * at this point what type they need to have.
1028 */
1029 return 0;
1030 else
1031 return config_term_common(attr, term, err);
1032}
1033
1034static int config_term_tracepoint(struct perf_event_attr *attr,
1035 struct parse_events_term *term,
1036 struct parse_events_error *err)
1037{
1038 switch (term->type_term) {
1039 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1040 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1041 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1042 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1043 return config_term_common(attr, term, err);
1044 default:
1045 if (err) {
1046 err->idx = term->err_term;
1047 err->str = strdup("unknown term");
1048 err->help = strdup("valid terms: call-graph,stack-size\n");
1049 }
1050 return -EINVAL;
1051 }
1052
1053 return 0;
1054}
1055
1056static int config_attr(struct perf_event_attr *attr,
1057 struct list_head *head,
1058 struct parse_events_error *err,
1059 config_term_func_t config_term)
1060{
1061 struct parse_events_term *term;
1062
1063 list_for_each_entry(term, head, list)
1064 if (config_term(attr, term, err))
1065 return -EINVAL;
1066
1067 return 0;
1068}
1069
1070static int get_config_terms(struct list_head *head_config,
1071 struct list_head *head_terms __maybe_unused)
1072{
1073#define ADD_CONFIG_TERM(__type, __name, __val) \
1074do { \
1075 struct perf_evsel_config_term *__t; \
1076 \
1077 __t = zalloc(sizeof(*__t)); \
1078 if (!__t) \
1079 return -ENOMEM; \
1080 \
1081 INIT_LIST_HEAD(&__t->list); \
1082 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1083 __t->val.__name = __val; \
1084 list_add_tail(&__t->list, head_terms); \
1085} while (0)
1086
1087 struct parse_events_term *term;
1088
1089 list_for_each_entry(term, head_config, list) {
1090 switch (term->type_term) {
1091 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1092 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1093 break;
1094 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1095 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1096 break;
1097 case PARSE_EVENTS__TERM_TYPE_TIME:
1098 ADD_CONFIG_TERM(TIME, time, term->val.num);
1099 break;
1100 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1101 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1102 break;
1103 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1104 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1105 break;
1106 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1107 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1108 break;
1109 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1110 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1111 break;
1112 default:
1113 break;
1114 }
1115 }
1116#undef ADD_EVSEL_CONFIG
1117 return 0;
1118}
1119
1120int parse_events_add_tracepoint(struct list_head *list, int *idx,
1121 char *sys, char *event,
1122 struct parse_events_error *err,
1123 struct list_head *head_config)
1124{
1125 if (head_config) {
1126 struct perf_event_attr attr;
1127
1128 if (config_attr(&attr, head_config, err,
1129 config_term_tracepoint))
1130 return -EINVAL;
1131 }
1132
1133 if (strpbrk(sys, "*?"))
1134 return add_tracepoint_multi_sys(list, idx, sys, event,
1135 err, head_config);
1136 else
1137 return add_tracepoint_event(list, idx, sys, event,
1138 err, head_config);
1139}
1140
1141int parse_events_add_numeric(struct parse_events_evlist *data,
1142 struct list_head *list,
1143 u32 type, u64 config,
1144 struct list_head *head_config)
1145{
1146 struct perf_event_attr attr;
1147 LIST_HEAD(config_terms);
1148
1149 memset(&attr, 0, sizeof(attr));
1150 attr.type = type;
1151 attr.config = config;
1152
1153 if (head_config) {
1154 if (config_attr(&attr, head_config, data->error,
1155 config_term_common))
1156 return -EINVAL;
1157
1158 if (get_config_terms(head_config, &config_terms))
1159 return -ENOMEM;
1160 }
1161
1162 return add_event(list, &data->idx, &attr,
1163 get_config_name(head_config), &config_terms);
1164}
1165
1166int parse_events_add_pmu(struct parse_events_evlist *data,
1167 struct list_head *list, char *name,
1168 struct list_head *head_config)
1169{
1170 struct perf_event_attr attr;
1171 struct perf_pmu_info info;
1172 struct perf_pmu *pmu;
1173 struct perf_evsel *evsel;
1174 LIST_HEAD(config_terms);
1175
1176 pmu = perf_pmu__find(name);
1177 if (!pmu)
1178 return -EINVAL;
1179
1180 if (pmu->default_config) {
1181 memcpy(&attr, pmu->default_config,
1182 sizeof(struct perf_event_attr));
1183 } else {
1184 memset(&attr, 0, sizeof(attr));
1185 }
1186
1187 if (!head_config) {
1188 attr.type = pmu->type;
1189 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
1190 return evsel ? 0 : -ENOMEM;
1191 }
1192
1193 if (perf_pmu__check_alias(pmu, head_config, &info))
1194 return -EINVAL;
1195
1196 /*
1197 * Configure hardcoded terms first, no need to check
1198 * return value when called with fail == 0 ;)
1199 */
1200 if (config_attr(&attr, head_config, data->error, config_term_pmu))
1201 return -EINVAL;
1202
1203 if (get_config_terms(head_config, &config_terms))
1204 return -ENOMEM;
1205
1206 if (perf_pmu__config(pmu, &attr, head_config, data->error))
1207 return -EINVAL;
1208
1209 evsel = __add_event(list, &data->idx, &attr,
1210 get_config_name(head_config), pmu->cpus,
1211 &config_terms);
1212 if (evsel) {
1213 evsel->unit = info.unit;
1214 evsel->scale = info.scale;
1215 evsel->per_pkg = info.per_pkg;
1216 evsel->snapshot = info.snapshot;
1217 }
1218
1219 return evsel ? 0 : -ENOMEM;
1220}
1221
1222int parse_events__modifier_group(struct list_head *list,
1223 char *event_mod)
1224{
1225 return parse_events__modifier_event(list, event_mod, true);
1226}
1227
1228void parse_events__set_leader(char *name, struct list_head *list)
1229{
1230 struct perf_evsel *leader;
1231
1232 if (list_empty(list)) {
1233 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1234 return;
1235 }
1236
1237 __perf_evlist__set_leader(list);
1238 leader = list_entry(list->next, struct perf_evsel, node);
1239 leader->group_name = name ? strdup(name) : NULL;
1240}
1241
1242/* list_event is assumed to point to malloc'ed memory */
1243void parse_events_update_lists(struct list_head *list_event,
1244 struct list_head *list_all)
1245{
1246 /*
1247 * Called for single event definition. Update the
1248 * 'all event' list, and reinit the 'single event'
1249 * list, for next event definition.
1250 */
1251 list_splice_tail(list_event, list_all);
1252 free(list_event);
1253}
1254
1255struct event_modifier {
1256 int eu;
1257 int ek;
1258 int eh;
1259 int eH;
1260 int eG;
1261 int eI;
1262 int precise;
1263 int precise_max;
1264 int exclude_GH;
1265 int sample_read;
1266 int pinned;
1267};
1268
1269static int get_event_modifier(struct event_modifier *mod, char *str,
1270 struct perf_evsel *evsel)
1271{
1272 int eu = evsel ? evsel->attr.exclude_user : 0;
1273 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1274 int eh = evsel ? evsel->attr.exclude_hv : 0;
1275 int eH = evsel ? evsel->attr.exclude_host : 0;
1276 int eG = evsel ? evsel->attr.exclude_guest : 0;
1277 int eI = evsel ? evsel->attr.exclude_idle : 0;
1278 int precise = evsel ? evsel->attr.precise_ip : 0;
1279 int precise_max = 0;
1280 int sample_read = 0;
1281 int pinned = evsel ? evsel->attr.pinned : 0;
1282
1283 int exclude = eu | ek | eh;
1284 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1285
1286 memset(mod, 0, sizeof(*mod));
1287
1288 while (*str) {
1289 if (*str == 'u') {
1290 if (!exclude)
1291 exclude = eu = ek = eh = 1;
1292 eu = 0;
1293 } else if (*str == 'k') {
1294 if (!exclude)
1295 exclude = eu = ek = eh = 1;
1296 ek = 0;
1297 } else if (*str == 'h') {
1298 if (!exclude)
1299 exclude = eu = ek = eh = 1;
1300 eh = 0;
1301 } else if (*str == 'G') {
1302 if (!exclude_GH)
1303 exclude_GH = eG = eH = 1;
1304 eG = 0;
1305 } else if (*str == 'H') {
1306 if (!exclude_GH)
1307 exclude_GH = eG = eH = 1;
1308 eH = 0;
1309 } else if (*str == 'I') {
1310 eI = 1;
1311 } else if (*str == 'p') {
1312 precise++;
1313 /* use of precise requires exclude_guest */
1314 if (!exclude_GH)
1315 eG = 1;
1316 } else if (*str == 'P') {
1317 precise_max = 1;
1318 } else if (*str == 'S') {
1319 sample_read = 1;
1320 } else if (*str == 'D') {
1321 pinned = 1;
1322 } else
1323 break;
1324
1325 ++str;
1326 }
1327
1328 /*
1329 * precise ip:
1330 *
1331 * 0 - SAMPLE_IP can have arbitrary skid
1332 * 1 - SAMPLE_IP must have constant skid
1333 * 2 - SAMPLE_IP requested to have 0 skid
1334 * 3 - SAMPLE_IP must have 0 skid
1335 *
1336 * See also PERF_RECORD_MISC_EXACT_IP
1337 */
1338 if (precise > 3)
1339 return -EINVAL;
1340
1341 mod->eu = eu;
1342 mod->ek = ek;
1343 mod->eh = eh;
1344 mod->eH = eH;
1345 mod->eG = eG;
1346 mod->eI = eI;
1347 mod->precise = precise;
1348 mod->precise_max = precise_max;
1349 mod->exclude_GH = exclude_GH;
1350 mod->sample_read = sample_read;
1351 mod->pinned = pinned;
1352
1353 return 0;
1354}
1355
1356/*
1357 * Basic modifier sanity check to validate it contains only one
1358 * instance of any modifier (apart from 'p') present.
1359 */
1360static int check_modifier(char *str)
1361{
1362 char *p = str;
1363
1364 /* The sizeof includes 0 byte as well. */
1365 if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
1366 return -1;
1367
1368 while (*p) {
1369 if (*p != 'p' && strchr(p + 1, *p))
1370 return -1;
1371 p++;
1372 }
1373
1374 return 0;
1375}
1376
1377int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1378{
1379 struct perf_evsel *evsel;
1380 struct event_modifier mod;
1381
1382 if (str == NULL)
1383 return 0;
1384
1385 if (check_modifier(str))
1386 return -EINVAL;
1387
1388 if (!add && get_event_modifier(&mod, str, NULL))
1389 return -EINVAL;
1390
1391 __evlist__for_each(list, evsel) {
1392 if (add && get_event_modifier(&mod, str, evsel))
1393 return -EINVAL;
1394
1395 evsel->attr.exclude_user = mod.eu;
1396 evsel->attr.exclude_kernel = mod.ek;
1397 evsel->attr.exclude_hv = mod.eh;
1398 evsel->attr.precise_ip = mod.precise;
1399 evsel->attr.exclude_host = mod.eH;
1400 evsel->attr.exclude_guest = mod.eG;
1401 evsel->attr.exclude_idle = mod.eI;
1402 evsel->exclude_GH = mod.exclude_GH;
1403 evsel->sample_read = mod.sample_read;
1404 evsel->precise_max = mod.precise_max;
1405
1406 if (perf_evsel__is_group_leader(evsel))
1407 evsel->attr.pinned = mod.pinned;
1408 }
1409
1410 return 0;
1411}
1412
1413int parse_events_name(struct list_head *list, char *name)
1414{
1415 struct perf_evsel *evsel;
1416
1417 __evlist__for_each(list, evsel) {
1418 if (!evsel->name)
1419 evsel->name = strdup(name);
1420 }
1421
1422 return 0;
1423}
1424
1425static int
1426comp_pmu(const void *p1, const void *p2)
1427{
1428 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1429 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1430
1431 return strcmp(pmu1->symbol, pmu2->symbol);
1432}
1433
1434static void perf_pmu__parse_cleanup(void)
1435{
1436 if (perf_pmu_events_list_num > 0) {
1437 struct perf_pmu_event_symbol *p;
1438 int i;
1439
1440 for (i = 0; i < perf_pmu_events_list_num; i++) {
1441 p = perf_pmu_events_list + i;
1442 free(p->symbol);
1443 }
1444 free(perf_pmu_events_list);
1445 perf_pmu_events_list = NULL;
1446 perf_pmu_events_list_num = 0;
1447 }
1448}
1449
1450#define SET_SYMBOL(str, stype) \
1451do { \
1452 p->symbol = str; \
1453 if (!p->symbol) \
1454 goto err; \
1455 p->type = stype; \
1456} while (0)
1457
1458/*
1459 * Read the pmu events list from sysfs
1460 * Save it into perf_pmu_events_list
1461 */
1462static void perf_pmu__parse_init(void)
1463{
1464
1465 struct perf_pmu *pmu = NULL;
1466 struct perf_pmu_alias *alias;
1467 int len = 0;
1468
1469 pmu = perf_pmu__find("cpu");
1470 if ((pmu == NULL) || list_empty(&pmu->aliases)) {
1471 perf_pmu_events_list_num = -1;
1472 return;
1473 }
1474 list_for_each_entry(alias, &pmu->aliases, list) {
1475 if (strchr(alias->name, '-'))
1476 len++;
1477 len++;
1478 }
1479 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1480 if (!perf_pmu_events_list)
1481 return;
1482 perf_pmu_events_list_num = len;
1483
1484 len = 0;
1485 list_for_each_entry(alias, &pmu->aliases, list) {
1486 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1487 char *tmp = strchr(alias->name, '-');
1488
1489 if (tmp != NULL) {
1490 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1491 PMU_EVENT_SYMBOL_PREFIX);
1492 p++;
1493 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1494 len += 2;
1495 } else {
1496 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1497 len++;
1498 }
1499 }
1500 qsort(perf_pmu_events_list, len,
1501 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1502
1503 return;
1504err:
1505 perf_pmu__parse_cleanup();
1506}
1507
1508enum perf_pmu_event_symbol_type
1509perf_pmu__parse_check(const char *name)
1510{
1511 struct perf_pmu_event_symbol p, *r;
1512
1513 /* scan kernel pmu events from sysfs if needed */
1514 if (perf_pmu_events_list_num == 0)
1515 perf_pmu__parse_init();
1516 /*
1517 * name "cpu" could be prefix of cpu-cycles or cpu// events.
1518 * cpu-cycles has been handled by hardcode.
1519 * So it must be cpu// events, not kernel pmu event.
1520 */
1521 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1522 return PMU_EVENT_SYMBOL_ERR;
1523
1524 p.symbol = strdup(name);
1525 r = bsearch(&p, perf_pmu_events_list,
1526 (size_t) perf_pmu_events_list_num,
1527 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1528 free(p.symbol);
1529 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1530}
1531
1532static int parse_events__scanner(const char *str, void *data, int start_token)
1533{
1534 YY_BUFFER_STATE buffer;
1535 void *scanner;
1536 int ret;
1537
1538 ret = parse_events_lex_init_extra(start_token, &scanner);
1539 if (ret)
1540 return ret;
1541
1542 buffer = parse_events__scan_string(str, scanner);
1543
1544#ifdef PARSER_DEBUG
1545 parse_events_debug = 1;
1546#endif
1547 ret = parse_events_parse(data, scanner);
1548
1549 parse_events__flush_buffer(buffer, scanner);
1550 parse_events__delete_buffer(buffer, scanner);
1551 parse_events_lex_destroy(scanner);
1552 return ret;
1553}
1554
1555/*
1556 * parse event config string, return a list of event terms.
1557 */
1558int parse_events_terms(struct list_head *terms, const char *str)
1559{
1560 struct parse_events_terms data = {
1561 .terms = NULL,
1562 };
1563 int ret;
1564
1565 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1566 if (!ret) {
1567 list_splice(data.terms, terms);
1568 zfree(&data.terms);
1569 return 0;
1570 }
1571
1572 parse_events_terms__delete(data.terms);
1573 return ret;
1574}
1575
1576int parse_events(struct perf_evlist *evlist, const char *str,
1577 struct parse_events_error *err)
1578{
1579 struct parse_events_evlist data = {
1580 .list = LIST_HEAD_INIT(data.list),
1581 .idx = evlist->nr_entries,
1582 .error = err,
1583 .evlist = evlist,
1584 };
1585 int ret;
1586
1587 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1588 perf_pmu__parse_cleanup();
1589 if (!ret) {
1590 struct perf_evsel *last;
1591
1592 if (list_empty(&data.list)) {
1593 WARN_ONCE(true, "WARNING: event parser found nothing");
1594 return -1;
1595 }
1596
1597 perf_evlist__splice_list_tail(evlist, &data.list);
1598 evlist->nr_groups += data.nr_groups;
1599 last = perf_evlist__last(evlist);
1600 last->cmdline_group_boundary = true;
1601
1602 return 0;
1603 }
1604
1605 /*
1606 * There are 2 users - builtin-record and builtin-test objects.
1607 * Both call perf_evlist__delete in case of error, so we dont
1608 * need to bother.
1609 */
1610 return ret;
1611}
1612
1613#define MAX_WIDTH 1000
1614static int get_term_width(void)
1615{
1616 struct winsize ws;
1617
1618 get_term_dimensions(&ws);
1619 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1620}
1621
1622static void parse_events_print_error(struct parse_events_error *err,
1623 const char *event)
1624{
1625 const char *str = "invalid or unsupported event: ";
1626 char _buf[MAX_WIDTH];
1627 char *buf = (char *) event;
1628 int idx = 0;
1629
1630 if (err->str) {
1631 /* -2 for extra '' in the final fprintf */
1632 int width = get_term_width() - 2;
1633 int len_event = strlen(event);
1634 int len_str, max_len, cut = 0;
1635
1636 /*
1637 * Maximum error index indent, we will cut
1638 * the event string if it's bigger.
1639 */
1640 int max_err_idx = 13;
1641
1642 /*
1643 * Let's be specific with the message when
1644 * we have the precise error.
1645 */
1646 str = "event syntax error: ";
1647 len_str = strlen(str);
1648 max_len = width - len_str;
1649
1650 buf = _buf;
1651
1652 /* We're cutting from the beggining. */
1653 if (err->idx > max_err_idx)
1654 cut = err->idx - max_err_idx;
1655
1656 strncpy(buf, event + cut, max_len);
1657
1658 /* Mark cut parts with '..' on both sides. */
1659 if (cut)
1660 buf[0] = buf[1] = '.';
1661
1662 if ((len_event - cut) > max_len) {
1663 buf[max_len - 1] = buf[max_len - 2] = '.';
1664 buf[max_len] = 0;
1665 }
1666
1667 idx = len_str + err->idx - cut;
1668 }
1669
1670 fprintf(stderr, "%s'%s'\n", str, buf);
1671 if (idx) {
1672 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1673 if (err->help)
1674 fprintf(stderr, "\n%s\n", err->help);
1675 free(err->str);
1676 free(err->help);
1677 }
1678
1679 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1680}
1681
1682#undef MAX_WIDTH
1683
1684int parse_events_option(const struct option *opt, const char *str,
1685 int unset __maybe_unused)
1686{
1687 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1688 struct parse_events_error err = { .idx = 0, };
1689 int ret = parse_events(evlist, str, &err);
1690
1691 if (ret)
1692 parse_events_print_error(&err, str);
1693
1694 return ret;
1695}
1696
1697static int
1698foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1699 int (*func)(struct perf_evsel *evsel,
1700 const void *arg),
1701 const void *arg)
1702{
1703 struct perf_evsel *last = NULL;
1704 int err;
1705
1706 /*
1707 * Don't return when list_empty, give func a chance to report
1708 * error when it found last == NULL.
1709 *
1710 * So no need to WARN here, let *func do this.
1711 */
1712 if (evlist->nr_entries > 0)
1713 last = perf_evlist__last(evlist);
1714
1715 do {
1716 err = (*func)(last, arg);
1717 if (err)
1718 return -1;
1719 if (!last)
1720 return 0;
1721
1722 if (last->node.prev == &evlist->entries)
1723 return 0;
1724 last = list_entry(last->node.prev, struct perf_evsel, node);
1725 } while (!last->cmdline_group_boundary);
1726
1727 return 0;
1728}
1729
1730static int set_filter(struct perf_evsel *evsel, const void *arg)
1731{
1732 const char *str = arg;
1733
1734 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1735 fprintf(stderr,
1736 "--filter option should follow a -e tracepoint option\n");
1737 return -1;
1738 }
1739
1740 if (perf_evsel__append_filter(evsel, "&&", str) < 0) {
1741 fprintf(stderr,
1742 "not enough memory to hold filter string\n");
1743 return -1;
1744 }
1745
1746 return 0;
1747}
1748
1749int parse_filter(const struct option *opt, const char *str,
1750 int unset __maybe_unused)
1751{
1752 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1753
1754 return foreach_evsel_in_last_glob(evlist, set_filter,
1755 (const void *)str);
1756}
1757
1758static int add_exclude_perf_filter(struct perf_evsel *evsel,
1759 const void *arg __maybe_unused)
1760{
1761 char new_filter[64];
1762
1763 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1764 fprintf(stderr,
1765 "--exclude-perf option should follow a -e tracepoint option\n");
1766 return -1;
1767 }
1768
1769 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1770
1771 if (perf_evsel__append_filter(evsel, "&&", new_filter) < 0) {
1772 fprintf(stderr,
1773 "not enough memory to hold filter string\n");
1774 return -1;
1775 }
1776
1777 return 0;
1778}
1779
1780int exclude_perf(const struct option *opt,
1781 const char *arg __maybe_unused,
1782 int unset __maybe_unused)
1783{
1784 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1785
1786 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1787 NULL);
1788}
1789
1790static const char * const event_type_descriptors[] = {
1791 "Hardware event",
1792 "Software event",
1793 "Tracepoint event",
1794 "Hardware cache event",
1795 "Raw hardware event descriptor",
1796 "Hardware breakpoint",
1797};
1798
1799static int cmp_string(const void *a, const void *b)
1800{
1801 const char * const *as = a;
1802 const char * const *bs = b;
1803
1804 return strcmp(*as, *bs);
1805}
1806
1807/*
1808 * Print the events from <debugfs_mount_point>/tracing/events
1809 */
1810
1811void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1812 bool name_only)
1813{
1814 DIR *sys_dir, *evt_dir;
1815 struct dirent *sys_dirent, *evt_dirent;
1816 char evt_path[MAXPATHLEN];
1817 char dir_path[MAXPATHLEN];
1818 char **evt_list = NULL;
1819 unsigned int evt_i = 0, evt_num = 0;
1820 bool evt_num_known = false;
1821
1822restart:
1823 sys_dir = opendir(tracing_events_path);
1824 if (!sys_dir)
1825 return;
1826
1827 if (evt_num_known) {
1828 evt_list = zalloc(sizeof(char *) * evt_num);
1829 if (!evt_list)
1830 goto out_close_sys_dir;
1831 }
1832
1833 for_each_subsystem(sys_dir, sys_dirent) {
1834 if (subsys_glob != NULL &&
1835 !strglobmatch(sys_dirent->d_name, subsys_glob))
1836 continue;
1837
1838 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1839 sys_dirent->d_name);
1840 evt_dir = opendir(dir_path);
1841 if (!evt_dir)
1842 continue;
1843
1844 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1845 if (event_glob != NULL &&
1846 !strglobmatch(evt_dirent->d_name, event_glob))
1847 continue;
1848
1849 if (!evt_num_known) {
1850 evt_num++;
1851 continue;
1852 }
1853
1854 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1855 sys_dirent->d_name, evt_dirent->d_name);
1856
1857 evt_list[evt_i] = strdup(evt_path);
1858 if (evt_list[evt_i] == NULL)
1859 goto out_close_evt_dir;
1860 evt_i++;
1861 }
1862 closedir(evt_dir);
1863 }
1864 closedir(sys_dir);
1865
1866 if (!evt_num_known) {
1867 evt_num_known = true;
1868 goto restart;
1869 }
1870 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1871 evt_i = 0;
1872 while (evt_i < evt_num) {
1873 if (name_only) {
1874 printf("%s ", evt_list[evt_i++]);
1875 continue;
1876 }
1877 printf(" %-50s [%s]\n", evt_list[evt_i++],
1878 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1879 }
1880 if (evt_num && pager_in_use())
1881 printf("\n");
1882
1883out_free:
1884 evt_num = evt_i;
1885 for (evt_i = 0; evt_i < evt_num; evt_i++)
1886 zfree(&evt_list[evt_i]);
1887 zfree(&evt_list);
1888 return;
1889
1890out_close_evt_dir:
1891 closedir(evt_dir);
1892out_close_sys_dir:
1893 closedir(sys_dir);
1894
1895 printf("FATAL: not enough memory to print %s\n",
1896 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1897 if (evt_list)
1898 goto out_free;
1899}
1900
1901/*
1902 * Check whether event is in <debugfs_mount_point>/tracing/events
1903 */
1904
1905int is_valid_tracepoint(const char *event_string)
1906{
1907 DIR *sys_dir, *evt_dir;
1908 struct dirent *sys_dirent, *evt_dirent;
1909 char evt_path[MAXPATHLEN];
1910 char dir_path[MAXPATHLEN];
1911
1912 sys_dir = opendir(tracing_events_path);
1913 if (!sys_dir)
1914 return 0;
1915
1916 for_each_subsystem(sys_dir, sys_dirent) {
1917
1918 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1919 sys_dirent->d_name);
1920 evt_dir = opendir(dir_path);
1921 if (!evt_dir)
1922 continue;
1923
1924 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1925 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1926 sys_dirent->d_name, evt_dirent->d_name);
1927 if (!strcmp(evt_path, event_string)) {
1928 closedir(evt_dir);
1929 closedir(sys_dir);
1930 return 1;
1931 }
1932 }
1933 closedir(evt_dir);
1934 }
1935 closedir(sys_dir);
1936 return 0;
1937}
1938
1939static bool is_event_supported(u8 type, unsigned config)
1940{
1941 bool ret = true;
1942 int open_return;
1943 struct perf_evsel *evsel;
1944 struct perf_event_attr attr = {
1945 .type = type,
1946 .config = config,
1947 .disabled = 1,
1948 };
1949 struct {
1950 struct thread_map map;
1951 int threads[1];
1952 } tmap = {
1953 .map.nr = 1,
1954 .threads = { 0 },
1955 };
1956
1957 evsel = perf_evsel__new(&attr);
1958 if (evsel) {
1959 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1960 ret = open_return >= 0;
1961
1962 if (open_return == -EACCES) {
1963 /*
1964 * This happens if the paranoid value
1965 * /proc/sys/kernel/perf_event_paranoid is set to 2
1966 * Re-run with exclude_kernel set; we don't do that
1967 * by default as some ARM machines do not support it.
1968 *
1969 */
1970 evsel->attr.exclude_kernel = 1;
1971 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1972 }
1973 perf_evsel__delete(evsel);
1974 }
1975
1976 return ret;
1977}
1978
1979int print_hwcache_events(const char *event_glob, bool name_only)
1980{
1981 unsigned int type, op, i, evt_i = 0, evt_num = 0;
1982 char name[64];
1983 char **evt_list = NULL;
1984 bool evt_num_known = false;
1985
1986restart:
1987 if (evt_num_known) {
1988 evt_list = zalloc(sizeof(char *) * evt_num);
1989 if (!evt_list)
1990 goto out_enomem;
1991 }
1992
1993 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1994 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1995 /* skip invalid cache type */
1996 if (!perf_evsel__is_cache_op_valid(type, op))
1997 continue;
1998
1999 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2000 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2001 name, sizeof(name));
2002 if (event_glob != NULL && !strglobmatch(name, event_glob))
2003 continue;
2004
2005 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2006 type | (op << 8) | (i << 16)))
2007 continue;
2008
2009 if (!evt_num_known) {
2010 evt_num++;
2011 continue;
2012 }
2013
2014 evt_list[evt_i] = strdup(name);
2015 if (evt_list[evt_i] == NULL)
2016 goto out_enomem;
2017 evt_i++;
2018 }
2019 }
2020 }
2021
2022 if (!evt_num_known) {
2023 evt_num_known = true;
2024 goto restart;
2025 }
2026 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2027 evt_i = 0;
2028 while (evt_i < evt_num) {
2029 if (name_only) {
2030 printf("%s ", evt_list[evt_i++]);
2031 continue;
2032 }
2033 printf(" %-50s [%s]\n", evt_list[evt_i++],
2034 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2035 }
2036 if (evt_num && pager_in_use())
2037 printf("\n");
2038
2039out_free:
2040 evt_num = evt_i;
2041 for (evt_i = 0; evt_i < evt_num; evt_i++)
2042 zfree(&evt_list[evt_i]);
2043 zfree(&evt_list);
2044 return evt_num;
2045
2046out_enomem:
2047 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2048 if (evt_list)
2049 goto out_free;
2050 return evt_num;
2051}
2052
2053void print_symbol_events(const char *event_glob, unsigned type,
2054 struct event_symbol *syms, unsigned max,
2055 bool name_only)
2056{
2057 unsigned int i, evt_i = 0, evt_num = 0;
2058 char name[MAX_NAME_LEN];
2059 char **evt_list = NULL;
2060 bool evt_num_known = false;
2061
2062restart:
2063 if (evt_num_known) {
2064 evt_list = zalloc(sizeof(char *) * evt_num);
2065 if (!evt_list)
2066 goto out_enomem;
2067 syms -= max;
2068 }
2069
2070 for (i = 0; i < max; i++, syms++) {
2071
2072 if (event_glob != NULL && syms->symbol != NULL &&
2073 !(strglobmatch(syms->symbol, event_glob) ||
2074 (syms->alias && strglobmatch(syms->alias, event_glob))))
2075 continue;
2076
2077 if (!is_event_supported(type, i))
2078 continue;
2079
2080 if (!evt_num_known) {
2081 evt_num++;
2082 continue;
2083 }
2084
2085 if (!name_only && strlen(syms->alias))
2086 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2087 else
2088 strncpy(name, syms->symbol, MAX_NAME_LEN);
2089
2090 evt_list[evt_i] = strdup(name);
2091 if (evt_list[evt_i] == NULL)
2092 goto out_enomem;
2093 evt_i++;
2094 }
2095
2096 if (!evt_num_known) {
2097 evt_num_known = true;
2098 goto restart;
2099 }
2100 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2101 evt_i = 0;
2102 while (evt_i < evt_num) {
2103 if (name_only) {
2104 printf("%s ", evt_list[evt_i++]);
2105 continue;
2106 }
2107 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2108 }
2109 if (evt_num && pager_in_use())
2110 printf("\n");
2111
2112out_free:
2113 evt_num = evt_i;
2114 for (evt_i = 0; evt_i < evt_num; evt_i++)
2115 zfree(&evt_list[evt_i]);
2116 zfree(&evt_list);
2117 return;
2118
2119out_enomem:
2120 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2121 if (evt_list)
2122 goto out_free;
2123}
2124
2125/*
2126 * Print the help text for the event symbols:
2127 */
2128void print_events(const char *event_glob, bool name_only)
2129{
2130 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2131 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2132
2133 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2134 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2135
2136 print_hwcache_events(event_glob, name_only);
2137
2138 print_pmu_events(event_glob, name_only);
2139
2140 if (event_glob != NULL)
2141 return;
2142
2143 if (!name_only) {
2144 printf(" %-50s [%s]\n",
2145 "rNNN",
2146 event_type_descriptors[PERF_TYPE_RAW]);
2147 printf(" %-50s [%s]\n",
2148 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2149 event_type_descriptors[PERF_TYPE_RAW]);
2150 if (pager_in_use())
2151 printf(" (see 'man perf-list' on how to encode it)\n\n");
2152
2153 printf(" %-50s [%s]\n",
2154 "mem:<addr>[/len][:access]",
2155 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2156 if (pager_in_use())
2157 printf("\n");
2158 }
2159
2160 print_tracepoint_events(NULL, NULL, name_only);
2161}
2162
2163int parse_events__is_hardcoded_term(struct parse_events_term *term)
2164{
2165 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2166}
2167
2168static int new_term(struct parse_events_term **_term, int type_val,
2169 int type_term, char *config,
2170 char *str, u64 num, int err_term, int err_val)
2171{
2172 struct parse_events_term *term;
2173
2174 term = zalloc(sizeof(*term));
2175 if (!term)
2176 return -ENOMEM;
2177
2178 INIT_LIST_HEAD(&term->list);
2179 term->type_val = type_val;
2180 term->type_term = type_term;
2181 term->config = config;
2182 term->err_term = err_term;
2183 term->err_val = err_val;
2184
2185 switch (type_val) {
2186 case PARSE_EVENTS__TERM_TYPE_NUM:
2187 term->val.num = num;
2188 break;
2189 case PARSE_EVENTS__TERM_TYPE_STR:
2190 term->val.str = str;
2191 break;
2192 default:
2193 free(term);
2194 return -EINVAL;
2195 }
2196
2197 *_term = term;
2198 return 0;
2199}
2200
2201int parse_events_term__num(struct parse_events_term **term,
2202 int type_term, char *config, u64 num,
2203 void *loc_term_, void *loc_val_)
2204{
2205 YYLTYPE *loc_term = loc_term_;
2206 YYLTYPE *loc_val = loc_val_;
2207
2208 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
2209 config, NULL, num,
2210 loc_term ? loc_term->first_column : 0,
2211 loc_val ? loc_val->first_column : 0);
2212}
2213
2214int parse_events_term__str(struct parse_events_term **term,
2215 int type_term, char *config, char *str,
2216 void *loc_term_, void *loc_val_)
2217{
2218 YYLTYPE *loc_term = loc_term_;
2219 YYLTYPE *loc_val = loc_val_;
2220
2221 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
2222 config, str, 0,
2223 loc_term ? loc_term->first_column : 0,
2224 loc_val ? loc_val->first_column : 0);
2225}
2226
2227int parse_events_term__sym_hw(struct parse_events_term **term,
2228 char *config, unsigned idx)
2229{
2230 struct event_symbol *sym;
2231
2232 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2233 sym = &event_symbols_hw[idx];
2234
2235 if (config)
2236 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2237 PARSE_EVENTS__TERM_TYPE_USER, config,
2238 (char *) sym->symbol, 0, 0, 0);
2239 else
2240 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2241 PARSE_EVENTS__TERM_TYPE_USER,
2242 (char *) "event", (char *) sym->symbol,
2243 0, 0, 0);
2244}
2245
2246int parse_events_term__clone(struct parse_events_term **new,
2247 struct parse_events_term *term)
2248{
2249 return new_term(new, term->type_val, term->type_term, term->config,
2250 term->val.str, term->val.num,
2251 term->err_term, term->err_val);
2252}
2253
2254void parse_events_terms__purge(struct list_head *terms)
2255{
2256 struct parse_events_term *term, *h;
2257
2258 list_for_each_entry_safe(term, h, terms, list) {
2259 if (term->array.nr_ranges)
2260 free(term->array.ranges);
2261 list_del_init(&term->list);
2262 free(term);
2263 }
2264}
2265
2266void parse_events_terms__delete(struct list_head *terms)
2267{
2268 if (!terms)
2269 return;
2270 parse_events_terms__purge(terms);
2271 free(terms);
2272}
2273
2274void parse_events__clear_array(struct parse_events_array *a)
2275{
2276 free(a->ranges);
2277}
2278
2279void parse_events_evlist_error(struct parse_events_evlist *data,
2280 int idx, const char *str)
2281{
2282 struct parse_events_error *err = data->error;
2283
2284 if (!err)
2285 return;
2286 err->idx = idx;
2287 err->str = strdup(str);
2288 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2289}
2290
2291static void config_terms_list(char *buf, size_t buf_sz)
2292{
2293 int i;
2294 bool first = true;
2295
2296 buf[0] = '\0';
2297 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2298 const char *name = config_term_names[i];
2299
2300 if (!config_term_avail(i, NULL))
2301 continue;
2302 if (!name)
2303 continue;
2304 if (name[0] == '<')
2305 continue;
2306
2307 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2308 return;
2309
2310 if (!first)
2311 strcat(buf, ",");
2312 else
2313 first = false;
2314 strcat(buf, name);
2315 }
2316}
2317
2318/*
2319 * Return string contains valid config terms of an event.
2320 * @additional_terms: For terms such as PMU sysfs terms.
2321 */
2322char *parse_events_formats_error_string(char *additional_terms)
2323{
2324 char *str;
2325 /* "branch_type" is the longest name */
2326 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2327 (sizeof("branch_type") - 1)];
2328
2329 config_terms_list(static_terms, sizeof(static_terms));
2330 /* valid terms */
2331 if (additional_terms) {
2332 if (asprintf(&str, "valid terms: %s,%s",
2333 additional_terms, static_terms) < 0)
2334 goto fail;
2335 } else {
2336 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2337 goto fail;
2338 }
2339 return str;
2340
2341fail:
2342 return NULL;
2343}