Loading...
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 "evlist.h"
12#include "evsel.h"
13#include <subcmd/parse-options.h>
14#include "parse-events.h"
15#include "string2.h"
16#include "strbuf.h"
17#include "debug.h"
18#include <api/fs/tracing_path.h>
19#include <perf/cpumap.h>
20#include <util/parse-events-bison.h>
21#include <util/parse-events-flex.h>
22#include "pmu.h"
23#include "pmus.h"
24#include "asm/bug.h"
25#include "util/parse-branch-options.h"
26#include "util/evsel_config.h"
27#include "util/event.h"
28#include "util/bpf-filter.h"
29#include "util/util.h"
30#include "tracepoint.h"
31
32#define MAX_NAME_LEN 100
33
34#ifdef PARSER_DEBUG
35extern int parse_events_debug;
36#endif
37static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms);
38static int parse_events_terms__copy(const struct parse_events_terms *src,
39 struct parse_events_terms *dest);
40
41struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
42 [PERF_COUNT_HW_CPU_CYCLES] = {
43 .symbol = "cpu-cycles",
44 .alias = "cycles",
45 },
46 [PERF_COUNT_HW_INSTRUCTIONS] = {
47 .symbol = "instructions",
48 .alias = "",
49 },
50 [PERF_COUNT_HW_CACHE_REFERENCES] = {
51 .symbol = "cache-references",
52 .alias = "",
53 },
54 [PERF_COUNT_HW_CACHE_MISSES] = {
55 .symbol = "cache-misses",
56 .alias = "",
57 },
58 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
59 .symbol = "branch-instructions",
60 .alias = "branches",
61 },
62 [PERF_COUNT_HW_BRANCH_MISSES] = {
63 .symbol = "branch-misses",
64 .alias = "",
65 },
66 [PERF_COUNT_HW_BUS_CYCLES] = {
67 .symbol = "bus-cycles",
68 .alias = "",
69 },
70 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
71 .symbol = "stalled-cycles-frontend",
72 .alias = "idle-cycles-frontend",
73 },
74 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
75 .symbol = "stalled-cycles-backend",
76 .alias = "idle-cycles-backend",
77 },
78 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
79 .symbol = "ref-cycles",
80 .alias = "",
81 },
82};
83
84struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
85 [PERF_COUNT_SW_CPU_CLOCK] = {
86 .symbol = "cpu-clock",
87 .alias = "",
88 },
89 [PERF_COUNT_SW_TASK_CLOCK] = {
90 .symbol = "task-clock",
91 .alias = "",
92 },
93 [PERF_COUNT_SW_PAGE_FAULTS] = {
94 .symbol = "page-faults",
95 .alias = "faults",
96 },
97 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
98 .symbol = "context-switches",
99 .alias = "cs",
100 },
101 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
102 .symbol = "cpu-migrations",
103 .alias = "migrations",
104 },
105 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
106 .symbol = "minor-faults",
107 .alias = "",
108 },
109 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
110 .symbol = "major-faults",
111 .alias = "",
112 },
113 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
114 .symbol = "alignment-faults",
115 .alias = "",
116 },
117 [PERF_COUNT_SW_EMULATION_FAULTS] = {
118 .symbol = "emulation-faults",
119 .alias = "",
120 },
121 [PERF_COUNT_SW_DUMMY] = {
122 .symbol = "dummy",
123 .alias = "",
124 },
125 [PERF_COUNT_SW_BPF_OUTPUT] = {
126 .symbol = "bpf-output",
127 .alias = "",
128 },
129 [PERF_COUNT_SW_CGROUP_SWITCHES] = {
130 .symbol = "cgroup-switches",
131 .alias = "",
132 },
133};
134
135const char *event_type(int type)
136{
137 switch (type) {
138 case PERF_TYPE_HARDWARE:
139 return "hardware";
140
141 case PERF_TYPE_SOFTWARE:
142 return "software";
143
144 case PERF_TYPE_TRACEPOINT:
145 return "tracepoint";
146
147 case PERF_TYPE_HW_CACHE:
148 return "hardware-cache";
149
150 default:
151 break;
152 }
153
154 return "unknown";
155}
156
157static char *get_config_str(struct parse_events_terms *head_terms,
158 enum parse_events__term_type type_term)
159{
160 struct parse_events_term *term;
161
162 if (!head_terms)
163 return NULL;
164
165 list_for_each_entry(term, &head_terms->terms, list)
166 if (term->type_term == type_term)
167 return term->val.str;
168
169 return NULL;
170}
171
172static char *get_config_metric_id(struct parse_events_terms *head_terms)
173{
174 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID);
175}
176
177static char *get_config_name(struct parse_events_terms *head_terms)
178{
179 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME);
180}
181
182/**
183 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that
184 * matches the raw's string value. If the string value matches an
185 * event then change the term to be an event, if not then change it to
186 * be a config term. For example, "read" may be an event of the PMU or
187 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of
188 * the event can be determined and we don't need to scan all PMUs
189 * ahead-of-time.
190 * @config_terms: the list of terms that may contain a raw term.
191 * @pmu: the PMU to scan for events from.
192 */
193static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu)
194{
195 struct parse_events_term *term;
196
197 list_for_each_entry(term, &config_terms->terms, list) {
198 u64 num;
199
200 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW)
201 continue;
202
203 if (perf_pmu__have_event(pmu, term->val.str)) {
204 zfree(&term->config);
205 term->config = term->val.str;
206 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
207 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
208 term->val.num = 1;
209 term->no_value = true;
210 continue;
211 }
212
213 zfree(&term->config);
214 term->config = strdup("config");
215 errno = 0;
216 num = strtoull(term->val.str + 1, NULL, 16);
217 assert(errno == 0);
218 free(term->val.str);
219 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
220 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG;
221 term->val.num = num;
222 term->no_value = false;
223 }
224}
225
226static struct evsel *
227__add_event(struct list_head *list, int *idx,
228 struct perf_event_attr *attr,
229 bool init_attr,
230 const char *name, const char *metric_id, struct perf_pmu *pmu,
231 struct list_head *config_terms, bool auto_merge_stats,
232 const char *cpu_list)
233{
234 struct evsel *evsel;
235 struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) :
236 cpu_list ? perf_cpu_map__new(cpu_list) : NULL;
237
238 if (pmu)
239 perf_pmu__warn_invalid_formats(pmu);
240
241 if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) {
242 perf_pmu__warn_invalid_config(pmu, attr->config, name,
243 PERF_PMU_FORMAT_VALUE_CONFIG, "config");
244 perf_pmu__warn_invalid_config(pmu, attr->config1, name,
245 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1");
246 perf_pmu__warn_invalid_config(pmu, attr->config2, name,
247 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2");
248 perf_pmu__warn_invalid_config(pmu, attr->config3, name,
249 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3");
250 }
251 if (init_attr)
252 event_attr_init(attr);
253
254 evsel = evsel__new_idx(attr, *idx);
255 if (!evsel) {
256 perf_cpu_map__put(cpus);
257 return NULL;
258 }
259
260 (*idx)++;
261 evsel->core.cpus = cpus;
262 evsel->core.own_cpus = perf_cpu_map__get(cpus);
263 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false;
264 evsel->core.is_pmu_core = pmu ? pmu->is_core : false;
265 evsel->auto_merge_stats = auto_merge_stats;
266 evsel->pmu = pmu;
267 evsel->pmu_name = pmu ? strdup(pmu->name) : NULL;
268
269 if (name)
270 evsel->name = strdup(name);
271
272 if (metric_id)
273 evsel->metric_id = strdup(metric_id);
274
275 if (config_terms)
276 list_splice_init(config_terms, &evsel->config_terms);
277
278 if (list)
279 list_add_tail(&evsel->core.node, list);
280
281 return evsel;
282}
283
284struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
285 const char *name, const char *metric_id,
286 struct perf_pmu *pmu)
287{
288 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name,
289 metric_id, pmu, /*config_terms=*/NULL,
290 /*auto_merge_stats=*/false, /*cpu_list=*/NULL);
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{
297 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id,
298 /*pmu=*/NULL, config_terms,
299 /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM;
300}
301
302static int add_event_tool(struct list_head *list, int *idx,
303 enum perf_tool_event tool_event)
304{
305 struct evsel *evsel;
306 struct perf_event_attr attr = {
307 .type = PERF_TYPE_SOFTWARE,
308 .config = PERF_COUNT_SW_DUMMY,
309 };
310
311 evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL,
312 /*metric_id=*/NULL, /*pmu=*/NULL,
313 /*config_terms=*/NULL, /*auto_merge_stats=*/false,
314 /*cpu_list=*/"0");
315 if (!evsel)
316 return -ENOMEM;
317 evsel->tool_event = tool_event;
318 if (tool_event == PERF_TOOL_DURATION_TIME
319 || tool_event == PERF_TOOL_USER_TIME
320 || tool_event == PERF_TOOL_SYSTEM_TIME) {
321 free((char *)evsel->unit);
322 evsel->unit = strdup("ns");
323 }
324 return 0;
325}
326
327/**
328 * parse_aliases - search names for entries beginning or equalling str ignoring
329 * case. If mutliple entries in names match str then the longest
330 * is chosen.
331 * @str: The needle to look for.
332 * @names: The haystack to search.
333 * @size: The size of the haystack.
334 * @longest: Out argument giving the length of the matching entry.
335 */
336static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size,
337 int *longest)
338{
339 *longest = -1;
340 for (int i = 0; i < size; i++) {
341 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {
342 int n = strlen(names[i][j]);
343
344 if (n > *longest && !strncasecmp(str, names[i][j], n))
345 *longest = n;
346 }
347 if (*longest > 0)
348 return i;
349 }
350
351 return -1;
352}
353
354typedef int config_term_func_t(struct perf_event_attr *attr,
355 struct parse_events_term *term,
356 struct parse_events_error *err);
357static int config_term_common(struct perf_event_attr *attr,
358 struct parse_events_term *term,
359 struct parse_events_error *err);
360static int config_attr(struct perf_event_attr *attr,
361 struct parse_events_terms *head,
362 struct parse_events_error *err,
363 config_term_func_t config_term);
364
365/**
366 * parse_events__decode_legacy_cache - Search name for the legacy cache event
367 * name composed of 1, 2 or 3 hyphen
368 * separated sections. The first section is
369 * the cache type while the others are the
370 * optional op and optional result. To make
371 * life hard the names in the table also
372 * contain hyphens and the longest name
373 * should always be selected.
374 */
375int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config)
376{
377 int len, cache_type = -1, cache_op = -1, cache_result = -1;
378 const char *name_end = &name[strlen(name) + 1];
379 const char *str = name;
380
381 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len);
382 if (cache_type == -1)
383 return -EINVAL;
384 str += len + 1;
385
386 if (str < name_end) {
387 cache_op = parse_aliases(str, evsel__hw_cache_op,
388 PERF_COUNT_HW_CACHE_OP_MAX, &len);
389 if (cache_op >= 0) {
390 if (!evsel__is_cache_op_valid(cache_type, cache_op))
391 return -EINVAL;
392 str += len + 1;
393 } else {
394 cache_result = parse_aliases(str, evsel__hw_cache_result,
395 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
396 if (cache_result >= 0)
397 str += len + 1;
398 }
399 }
400 if (str < name_end) {
401 if (cache_op < 0) {
402 cache_op = parse_aliases(str, evsel__hw_cache_op,
403 PERF_COUNT_HW_CACHE_OP_MAX, &len);
404 if (cache_op >= 0) {
405 if (!evsel__is_cache_op_valid(cache_type, cache_op))
406 return -EINVAL;
407 }
408 } else if (cache_result < 0) {
409 cache_result = parse_aliases(str, evsel__hw_cache_result,
410 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
411 }
412 }
413
414 /*
415 * Fall back to reads:
416 */
417 if (cache_op == -1)
418 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
419
420 /*
421 * Fall back to accesses:
422 */
423 if (cache_result == -1)
424 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
425
426 *config = cache_type | (cache_op << 8) | (cache_result << 16);
427 if (perf_pmus__supports_extended_type())
428 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT;
429 return 0;
430}
431
432/**
433 * parse_events__filter_pmu - returns false if a wildcard PMU should be
434 * considered, true if it should be filtered.
435 */
436bool parse_events__filter_pmu(const struct parse_events_state *parse_state,
437 const struct perf_pmu *pmu)
438{
439 if (parse_state->pmu_filter == NULL)
440 return false;
441
442 return strcmp(parse_state->pmu_filter, pmu->name) != 0;
443}
444
445int parse_events_add_cache(struct list_head *list, int *idx, const char *name,
446 struct parse_events_state *parse_state,
447 struct parse_events_terms *head_config)
448{
449 struct perf_pmu *pmu = NULL;
450 bool found_supported = false;
451 const char *config_name = get_config_name(head_config);
452 const char *metric_id = get_config_metric_id(head_config);
453
454 /* Legacy cache events are only supported by core PMUs. */
455 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
456 LIST_HEAD(config_terms);
457 struct perf_event_attr attr;
458 int ret;
459
460 if (parse_events__filter_pmu(parse_state, pmu))
461 continue;
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 (head_config) {
473 if (config_attr(&attr, head_config, parse_state->error, config_term_common))
474 return -EINVAL;
475
476 if (get_config_terms(head_config, &config_terms))
477 return -ENOMEM;
478 }
479
480 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name,
481 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
482 /*cpu_list=*/NULL) == NULL)
483 return -ENOMEM;
484
485 free_config_terms(&config_terms);
486 }
487 return found_supported ? 0 : -EINVAL;
488}
489
490#ifdef HAVE_LIBTRACEEVENT
491static void tracepoint_error(struct parse_events_error *e, int err,
492 const char *sys, const char *name, int column)
493{
494 const char *str;
495 char help[BUFSIZ];
496
497 if (!e)
498 return;
499
500 /*
501 * We get error directly from syscall errno ( > 0),
502 * or from encoded pointer's error ( < 0).
503 */
504 err = abs(err);
505
506 switch (err) {
507 case EACCES:
508 str = "can't access trace events";
509 break;
510 case ENOENT:
511 str = "unknown tracepoint";
512 break;
513 default:
514 str = "failed to add tracepoint";
515 break;
516 }
517
518 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
519 parse_events_error__handle(e, column, strdup(str), strdup(help));
520}
521
522static int add_tracepoint(struct list_head *list, int *idx,
523 const char *sys_name, const char *evt_name,
524 struct parse_events_error *err,
525 struct parse_events_terms *head_config, void *loc_)
526{
527 YYLTYPE *loc = loc_;
528 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++);
529
530 if (IS_ERR(evsel)) {
531 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column);
532 return PTR_ERR(evsel);
533 }
534
535 if (head_config) {
536 LIST_HEAD(config_terms);
537
538 if (get_config_terms(head_config, &config_terms))
539 return -ENOMEM;
540 list_splice(&config_terms, &evsel->config_terms);
541 }
542
543 list_add_tail(&evsel->core.node, list);
544 return 0;
545}
546
547static int add_tracepoint_multi_event(struct list_head *list, int *idx,
548 const char *sys_name, const char *evt_name,
549 struct parse_events_error *err,
550 struct parse_events_terms *head_config, YYLTYPE *loc)
551{
552 char *evt_path;
553 struct dirent *evt_ent;
554 DIR *evt_dir;
555 int ret = 0, found = 0;
556
557 evt_path = get_events_file(sys_name);
558 if (!evt_path) {
559 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
560 return -1;
561 }
562 evt_dir = opendir(evt_path);
563 if (!evt_dir) {
564 put_events_file(evt_path);
565 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
566 return -1;
567 }
568
569 while (!ret && (evt_ent = readdir(evt_dir))) {
570 if (!strcmp(evt_ent->d_name, ".")
571 || !strcmp(evt_ent->d_name, "..")
572 || !strcmp(evt_ent->d_name, "enable")
573 || !strcmp(evt_ent->d_name, "filter"))
574 continue;
575
576 if (!strglobmatch(evt_ent->d_name, evt_name))
577 continue;
578
579 found++;
580
581 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
582 err, head_config, loc);
583 }
584
585 if (!found) {
586 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column);
587 ret = -1;
588 }
589
590 put_events_file(evt_path);
591 closedir(evt_dir);
592 return ret;
593}
594
595static int add_tracepoint_event(struct list_head *list, int *idx,
596 const char *sys_name, const char *evt_name,
597 struct parse_events_error *err,
598 struct parse_events_terms *head_config, YYLTYPE *loc)
599{
600 return strpbrk(evt_name, "*?") ?
601 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
602 err, head_config, loc) :
603 add_tracepoint(list, idx, sys_name, evt_name,
604 err, head_config, loc);
605}
606
607static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
608 const char *sys_name, const char *evt_name,
609 struct parse_events_error *err,
610 struct parse_events_terms *head_config, YYLTYPE *loc)
611{
612 struct dirent *events_ent;
613 DIR *events_dir;
614 int ret = 0;
615
616 events_dir = tracing_events__opendir();
617 if (!events_dir) {
618 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
619 return -1;
620 }
621
622 while (!ret && (events_ent = readdir(events_dir))) {
623 if (!strcmp(events_ent->d_name, ".")
624 || !strcmp(events_ent->d_name, "..")
625 || !strcmp(events_ent->d_name, "enable")
626 || !strcmp(events_ent->d_name, "header_event")
627 || !strcmp(events_ent->d_name, "header_page"))
628 continue;
629
630 if (!strglobmatch(events_ent->d_name, sys_name))
631 continue;
632
633 ret = add_tracepoint_event(list, idx, events_ent->d_name,
634 evt_name, err, head_config, loc);
635 }
636
637 closedir(events_dir);
638 return ret;
639}
640#endif /* HAVE_LIBTRACEEVENT */
641
642static int
643parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
644{
645 int i;
646
647 for (i = 0; i < 3; i++) {
648 if (!type || !type[i])
649 break;
650
651#define CHECK_SET_TYPE(bit) \
652do { \
653 if (attr->bp_type & bit) \
654 return -EINVAL; \
655 else \
656 attr->bp_type |= bit; \
657} while (0)
658
659 switch (type[i]) {
660 case 'r':
661 CHECK_SET_TYPE(HW_BREAKPOINT_R);
662 break;
663 case 'w':
664 CHECK_SET_TYPE(HW_BREAKPOINT_W);
665 break;
666 case 'x':
667 CHECK_SET_TYPE(HW_BREAKPOINT_X);
668 break;
669 default:
670 return -EINVAL;
671 }
672 }
673
674#undef CHECK_SET_TYPE
675
676 if (!attr->bp_type) /* Default */
677 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
678
679 return 0;
680}
681
682int parse_events_add_breakpoint(struct parse_events_state *parse_state,
683 struct list_head *list,
684 u64 addr, char *type, u64 len,
685 struct parse_events_terms *head_config)
686{
687 struct perf_event_attr attr;
688 LIST_HEAD(config_terms);
689 const char *name;
690
691 memset(&attr, 0, sizeof(attr));
692 attr.bp_addr = addr;
693
694 if (parse_breakpoint_type(type, &attr))
695 return -EINVAL;
696
697 /* Provide some defaults if len is not specified */
698 if (!len) {
699 if (attr.bp_type == HW_BREAKPOINT_X)
700 len = sizeof(long);
701 else
702 len = HW_BREAKPOINT_LEN_4;
703 }
704
705 attr.bp_len = len;
706
707 attr.type = PERF_TYPE_BREAKPOINT;
708 attr.sample_period = 1;
709
710 if (head_config) {
711 if (config_attr(&attr, head_config, parse_state->error,
712 config_term_common))
713 return -EINVAL;
714
715 if (get_config_terms(head_config, &config_terms))
716 return -ENOMEM;
717 }
718
719 name = get_config_name(head_config);
720
721 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL,
722 &config_terms);
723}
724
725static int check_type_val(struct parse_events_term *term,
726 struct parse_events_error *err,
727 enum parse_events__term_val_type type)
728{
729 if (type == term->type_val)
730 return 0;
731
732 if (err) {
733 parse_events_error__handle(err, term->err_val,
734 type == PARSE_EVENTS__TERM_TYPE_NUM
735 ? strdup("expected numeric value")
736 : strdup("expected string value"),
737 NULL);
738 }
739 return -EINVAL;
740}
741
742static bool config_term_shrinked;
743
744static const char *config_term_name(enum parse_events__term_type term_type)
745{
746 /*
747 * Update according to parse-events.l
748 */
749 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
750 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
751 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
752 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
753 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
754 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3",
755 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
756 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
757 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
758 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
759 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
760 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
761 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
762 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
763 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
764 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
765 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr",
766 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
767 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
768 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
769 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore",
770 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output",
771 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size",
772 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id",
773 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw",
774 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache",
775 [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware",
776 };
777 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR)
778 return "unknown term";
779
780 return config_term_names[term_type];
781}
782
783static bool
784config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err)
785{
786 char *err_str;
787
788 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
789 parse_events_error__handle(err, -1,
790 strdup("Invalid term_type"), NULL);
791 return false;
792 }
793 if (!config_term_shrinked)
794 return true;
795
796 switch (term_type) {
797 case PARSE_EVENTS__TERM_TYPE_CONFIG:
798 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
799 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
800 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
801 case PARSE_EVENTS__TERM_TYPE_NAME:
802 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
803 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
804 case PARSE_EVENTS__TERM_TYPE_PERCORE:
805 return true;
806 case PARSE_EVENTS__TERM_TYPE_USER:
807 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
808 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
809 case PARSE_EVENTS__TERM_TYPE_TIME:
810 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
811 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
812 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
813 case PARSE_EVENTS__TERM_TYPE_INHERIT:
814 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
815 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
816 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
817 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
818 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
819 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
820 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
821 case PARSE_EVENTS__TERM_TYPE_RAW:
822 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
823 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
824 default:
825 if (!err)
826 return false;
827
828 /* term_type is validated so indexing is safe */
829 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",
830 config_term_name(term_type)) >= 0)
831 parse_events_error__handle(err, -1, err_str, NULL);
832 return false;
833 }
834}
835
836void parse_events__shrink_config_terms(void)
837{
838 config_term_shrinked = true;
839}
840
841static int config_term_common(struct perf_event_attr *attr,
842 struct parse_events_term *term,
843 struct parse_events_error *err)
844{
845#define CHECK_TYPE_VAL(type) \
846do { \
847 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
848 return -EINVAL; \
849} while (0)
850
851 switch (term->type_term) {
852 case PARSE_EVENTS__TERM_TYPE_CONFIG:
853 CHECK_TYPE_VAL(NUM);
854 attr->config = term->val.num;
855 break;
856 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
857 CHECK_TYPE_VAL(NUM);
858 attr->config1 = term->val.num;
859 break;
860 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
861 CHECK_TYPE_VAL(NUM);
862 attr->config2 = term->val.num;
863 break;
864 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
865 CHECK_TYPE_VAL(NUM);
866 attr->config3 = term->val.num;
867 break;
868 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
869 CHECK_TYPE_VAL(NUM);
870 break;
871 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
872 CHECK_TYPE_VAL(NUM);
873 break;
874 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
875 CHECK_TYPE_VAL(STR);
876 if (strcmp(term->val.str, "no") &&
877 parse_branch_str(term->val.str,
878 &attr->branch_sample_type)) {
879 parse_events_error__handle(err, term->err_val,
880 strdup("invalid branch sample type"),
881 NULL);
882 return -EINVAL;
883 }
884 break;
885 case PARSE_EVENTS__TERM_TYPE_TIME:
886 CHECK_TYPE_VAL(NUM);
887 if (term->val.num > 1) {
888 parse_events_error__handle(err, term->err_val,
889 strdup("expected 0 or 1"),
890 NULL);
891 return -EINVAL;
892 }
893 break;
894 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
895 CHECK_TYPE_VAL(STR);
896 break;
897 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
898 CHECK_TYPE_VAL(NUM);
899 break;
900 case PARSE_EVENTS__TERM_TYPE_INHERIT:
901 CHECK_TYPE_VAL(NUM);
902 break;
903 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
904 CHECK_TYPE_VAL(NUM);
905 break;
906 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
907 CHECK_TYPE_VAL(NUM);
908 break;
909 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
910 CHECK_TYPE_VAL(NUM);
911 break;
912 case PARSE_EVENTS__TERM_TYPE_NAME:
913 CHECK_TYPE_VAL(STR);
914 break;
915 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
916 CHECK_TYPE_VAL(STR);
917 break;
918 case PARSE_EVENTS__TERM_TYPE_RAW:
919 CHECK_TYPE_VAL(STR);
920 break;
921 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
922 CHECK_TYPE_VAL(NUM);
923 break;
924 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
925 CHECK_TYPE_VAL(NUM);
926 break;
927 case PARSE_EVENTS__TERM_TYPE_PERCORE:
928 CHECK_TYPE_VAL(NUM);
929 if ((unsigned int)term->val.num > 1) {
930 parse_events_error__handle(err, term->err_val,
931 strdup("expected 0 or 1"),
932 NULL);
933 return -EINVAL;
934 }
935 break;
936 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
937 CHECK_TYPE_VAL(NUM);
938 break;
939 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
940 CHECK_TYPE_VAL(NUM);
941 if (term->val.num > UINT_MAX) {
942 parse_events_error__handle(err, term->err_val,
943 strdup("too big"),
944 NULL);
945 return -EINVAL;
946 }
947 break;
948 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
949 case PARSE_EVENTS__TERM_TYPE_USER:
950 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
951 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
952 default:
953 parse_events_error__handle(err, term->err_term,
954 strdup(config_term_name(term->type_term)),
955 parse_events_formats_error_string(NULL));
956 return -EINVAL;
957 }
958
959 /*
960 * Check term availability after basic checking so
961 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
962 *
963 * If check availability at the entry of this function,
964 * user will see "'<sysfs term>' is not usable in 'perf stat'"
965 * if an invalid config term is provided for legacy events
966 * (for example, instructions/badterm/...), which is confusing.
967 */
968 if (!config_term_avail(term->type_term, err))
969 return -EINVAL;
970 return 0;
971#undef CHECK_TYPE_VAL
972}
973
974static int config_term_pmu(struct perf_event_attr *attr,
975 struct parse_events_term *term,
976 struct parse_events_error *err)
977{
978 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) {
979 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
980
981 if (!pmu) {
982 char *err_str;
983
984 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
985 parse_events_error__handle(err, term->err_term,
986 err_str, /*help=*/NULL);
987 return -EINVAL;
988 }
989 /*
990 * Rewrite the PMU event to a legacy cache one unless the PMU
991 * doesn't support legacy cache events or the event is present
992 * within the PMU.
993 */
994 if (perf_pmu__supports_legacy_cache(pmu) &&
995 !perf_pmu__have_event(pmu, term->config)) {
996 attr->type = PERF_TYPE_HW_CACHE;
997 return parse_events__decode_legacy_cache(term->config, pmu->type,
998 &attr->config);
999 } else {
1000 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1001 term->no_value = true;
1002 }
1003 }
1004 if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) {
1005 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
1006
1007 if (!pmu) {
1008 char *err_str;
1009
1010 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
1011 parse_events_error__handle(err, term->err_term,
1012 err_str, /*help=*/NULL);
1013 return -EINVAL;
1014 }
1015 /*
1016 * If the PMU has a sysfs or json event prefer it over
1017 * legacy. ARM requires this.
1018 */
1019 if (perf_pmu__have_event(pmu, term->config)) {
1020 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1021 term->no_value = true;
1022 } else {
1023 attr->type = PERF_TYPE_HARDWARE;
1024 attr->config = term->val.num;
1025 if (perf_pmus__supports_extended_type())
1026 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT;
1027 }
1028 return 0;
1029 }
1030 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1031 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) {
1032 /*
1033 * Always succeed for sysfs terms, as we dont know
1034 * at this point what type they need to have.
1035 */
1036 return 0;
1037 }
1038 return config_term_common(attr, term, err);
1039}
1040
1041#ifdef HAVE_LIBTRACEEVENT
1042static int config_term_tracepoint(struct perf_event_attr *attr,
1043 struct parse_events_term *term,
1044 struct parse_events_error *err)
1045{
1046 switch (term->type_term) {
1047 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1048 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1049 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1050 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1051 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1052 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1053 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1054 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1055 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1056 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1057 return config_term_common(attr, term, err);
1058 case PARSE_EVENTS__TERM_TYPE_USER:
1059 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1060 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1061 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1062 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1063 case PARSE_EVENTS__TERM_TYPE_NAME:
1064 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1065 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1066 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1067 case PARSE_EVENTS__TERM_TYPE_TIME:
1068 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1069 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1070 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1071 case PARSE_EVENTS__TERM_TYPE_RAW:
1072 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1073 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1074 default:
1075 if (err) {
1076 parse_events_error__handle(err, term->err_term,
1077 strdup(config_term_name(term->type_term)),
1078 strdup("valid terms: call-graph,stack-size\n"));
1079 }
1080 return -EINVAL;
1081 }
1082
1083 return 0;
1084}
1085#endif
1086
1087static int config_attr(struct perf_event_attr *attr,
1088 struct parse_events_terms *head,
1089 struct parse_events_error *err,
1090 config_term_func_t config_term)
1091{
1092 struct parse_events_term *term;
1093
1094 list_for_each_entry(term, &head->terms, list)
1095 if (config_term(attr, term, err))
1096 return -EINVAL;
1097
1098 return 0;
1099}
1100
1101static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms)
1102{
1103#define ADD_CONFIG_TERM(__type, __weak) \
1104 struct evsel_config_term *__t; \
1105 \
1106 __t = zalloc(sizeof(*__t)); \
1107 if (!__t) \
1108 return -ENOMEM; \
1109 \
1110 INIT_LIST_HEAD(&__t->list); \
1111 __t->type = EVSEL__CONFIG_TERM_ ## __type; \
1112 __t->weak = __weak; \
1113 list_add_tail(&__t->list, head_terms)
1114
1115#define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \
1116do { \
1117 ADD_CONFIG_TERM(__type, __weak); \
1118 __t->val.__name = __val; \
1119} while (0)
1120
1121#define ADD_CONFIG_TERM_STR(__type, __val, __weak) \
1122do { \
1123 ADD_CONFIG_TERM(__type, __weak); \
1124 __t->val.str = strdup(__val); \
1125 if (!__t->val.str) { \
1126 zfree(&__t); \
1127 return -ENOMEM; \
1128 } \
1129 __t->free_str = true; \
1130} while (0)
1131
1132 struct parse_events_term *term;
1133
1134 list_for_each_entry(term, &head_config->terms, list) {
1135 switch (term->type_term) {
1136 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1137 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);
1138 break;
1139 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1140 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);
1141 break;
1142 case PARSE_EVENTS__TERM_TYPE_TIME:
1143 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);
1144 break;
1145 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1146 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);
1147 break;
1148 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1149 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);
1150 break;
1151 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1152 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
1153 term->val.num, term->weak);
1154 break;
1155 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1156 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1157 term->val.num ? 1 : 0, term->weak);
1158 break;
1159 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1160 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1161 term->val.num ? 0 : 1, term->weak);
1162 break;
1163 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1164 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
1165 term->val.num, term->weak);
1166 break;
1167 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1168 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
1169 term->val.num, term->weak);
1170 break;
1171 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1172 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1173 term->val.num ? 1 : 0, term->weak);
1174 break;
1175 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1176 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1177 term->val.num ? 0 : 1, term->weak);
1178 break;
1179 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1180 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);
1181 break;
1182 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1183 ADD_CONFIG_TERM_VAL(PERCORE, percore,
1184 term->val.num ? true : false, term->weak);
1185 break;
1186 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1187 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
1188 term->val.num ? 1 : 0, term->weak);
1189 break;
1190 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1191 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
1192 term->val.num, term->weak);
1193 break;
1194 case PARSE_EVENTS__TERM_TYPE_USER:
1195 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1196 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1197 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1198 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1199 case PARSE_EVENTS__TERM_TYPE_NAME:
1200 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1201 case PARSE_EVENTS__TERM_TYPE_RAW:
1202 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1203 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1204 default:
1205 break;
1206 }
1207 }
1208 return 0;
1209}
1210
1211/*
1212 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for
1213 * each bit of attr->config that the user has changed.
1214 */
1215static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config,
1216 struct list_head *head_terms)
1217{
1218 struct parse_events_term *term;
1219 u64 bits = 0;
1220 int type;
1221
1222 list_for_each_entry(term, &head_config->terms, list) {
1223 switch (term->type_term) {
1224 case PARSE_EVENTS__TERM_TYPE_USER:
1225 type = perf_pmu__format_type(pmu, term->config);
1226 if (type != PERF_PMU_FORMAT_VALUE_CONFIG)
1227 continue;
1228 bits |= perf_pmu__format_bits(pmu, term->config);
1229 break;
1230 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1231 bits = ~(u64)0;
1232 break;
1233 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1234 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1235 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1236 case PARSE_EVENTS__TERM_TYPE_NAME:
1237 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1238 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1239 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1240 case PARSE_EVENTS__TERM_TYPE_TIME:
1241 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1242 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1243 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1244 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1245 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1246 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1247 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1248 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1249 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1250 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1251 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1252 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1253 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1254 case PARSE_EVENTS__TERM_TYPE_RAW:
1255 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1256 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1257 default:
1258 break;
1259 }
1260 }
1261
1262 if (bits)
1263 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);
1264
1265#undef ADD_CONFIG_TERM
1266 return 0;
1267}
1268
1269int parse_events_add_tracepoint(struct list_head *list, int *idx,
1270 const char *sys, const char *event,
1271 struct parse_events_error *err,
1272 struct parse_events_terms *head_config, void *loc_)
1273{
1274 YYLTYPE *loc = loc_;
1275#ifdef HAVE_LIBTRACEEVENT
1276 if (head_config) {
1277 struct perf_event_attr attr;
1278
1279 if (config_attr(&attr, head_config, err,
1280 config_term_tracepoint))
1281 return -EINVAL;
1282 }
1283
1284 if (strpbrk(sys, "*?"))
1285 return add_tracepoint_multi_sys(list, idx, sys, event,
1286 err, head_config, loc);
1287 else
1288 return add_tracepoint_event(list, idx, sys, event,
1289 err, head_config, loc);
1290#else
1291 (void)list;
1292 (void)idx;
1293 (void)sys;
1294 (void)event;
1295 (void)head_config;
1296 parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"),
1297 strdup("libtraceevent is necessary for tracepoint support"));
1298 return -1;
1299#endif
1300}
1301
1302static int __parse_events_add_numeric(struct parse_events_state *parse_state,
1303 struct list_head *list,
1304 struct perf_pmu *pmu, u32 type, u32 extended_type,
1305 u64 config, struct parse_events_terms *head_config)
1306{
1307 struct perf_event_attr attr;
1308 LIST_HEAD(config_terms);
1309 const char *name, *metric_id;
1310 int ret;
1311
1312 memset(&attr, 0, sizeof(attr));
1313 attr.type = type;
1314 attr.config = config;
1315 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) {
1316 assert(perf_pmus__supports_extended_type());
1317 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT;
1318 }
1319
1320 if (head_config) {
1321 if (config_attr(&attr, head_config, parse_state->error,
1322 config_term_common))
1323 return -EINVAL;
1324
1325 if (get_config_terms(head_config, &config_terms))
1326 return -ENOMEM;
1327 }
1328
1329 name = get_config_name(head_config);
1330 metric_id = get_config_metric_id(head_config);
1331 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name,
1332 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
1333 /*cpu_list=*/NULL) ? 0 : -ENOMEM;
1334 free_config_terms(&config_terms);
1335 return ret;
1336}
1337
1338int parse_events_add_numeric(struct parse_events_state *parse_state,
1339 struct list_head *list,
1340 u32 type, u64 config,
1341 struct parse_events_terms *head_config,
1342 bool wildcard)
1343{
1344 struct perf_pmu *pmu = NULL;
1345 bool found_supported = false;
1346
1347 /* Wildcards on numeric values are only supported by core PMUs. */
1348 if (wildcard && perf_pmus__supports_extended_type()) {
1349 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
1350 int ret;
1351
1352 found_supported = true;
1353 if (parse_events__filter_pmu(parse_state, pmu))
1354 continue;
1355
1356 ret = __parse_events_add_numeric(parse_state, list, pmu,
1357 type, pmu->type,
1358 config, head_config);
1359 if (ret)
1360 return ret;
1361 }
1362 if (found_supported)
1363 return 0;
1364 }
1365 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type),
1366 type, /*extended_type=*/0, config, head_config);
1367}
1368
1369int parse_events_add_tool(struct parse_events_state *parse_state,
1370 struct list_head *list,
1371 int tool_event)
1372{
1373 return add_event_tool(list, &parse_state->idx, tool_event);
1374}
1375
1376static bool config_term_percore(struct list_head *config_terms)
1377{
1378 struct evsel_config_term *term;
1379
1380 list_for_each_entry(term, config_terms, list) {
1381 if (term->type == EVSEL__CONFIG_TERM_PERCORE)
1382 return term->val.percore;
1383 }
1384
1385 return false;
1386}
1387
1388int parse_events_add_pmu(struct parse_events_state *parse_state,
1389 struct list_head *list, const char *name,
1390 const struct parse_events_terms *const_parsed_terms,
1391 bool auto_merge_stats, void *loc_)
1392{
1393 struct perf_event_attr attr;
1394 struct perf_pmu_info info;
1395 struct perf_pmu *pmu;
1396 struct evsel *evsel;
1397 struct parse_events_error *err = parse_state->error;
1398 YYLTYPE *loc = loc_;
1399 LIST_HEAD(config_terms);
1400 struct parse_events_terms parsed_terms;
1401 bool alias_rewrote_terms = false;
1402
1403 pmu = parse_state->fake_pmu ?: perf_pmus__find(name);
1404
1405 if (!pmu) {
1406 char *err_str;
1407
1408 if (asprintf(&err_str,
1409 "Cannot find PMU `%s'. Missing kernel support?",
1410 name) >= 0)
1411 parse_events_error__handle(err, loc->first_column, err_str, NULL);
1412 return -EINVAL;
1413 }
1414
1415 parse_events_terms__init(&parsed_terms);
1416 if (const_parsed_terms) {
1417 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1418
1419 if (ret)
1420 return ret;
1421 }
1422
1423 if (verbose > 1) {
1424 struct strbuf sb;
1425
1426 strbuf_init(&sb, /*hint=*/ 0);
1427 if (pmu->selectable && list_empty(&parsed_terms.terms)) {
1428 strbuf_addf(&sb, "%s//", name);
1429 } else {
1430 strbuf_addf(&sb, "%s/", name);
1431 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1432 strbuf_addch(&sb, '/');
1433 }
1434 fprintf(stderr, "Attempt to add: %s\n", sb.buf);
1435 strbuf_release(&sb);
1436 }
1437 fix_raw(&parsed_terms, pmu);
1438
1439 memset(&attr, 0, sizeof(attr));
1440 if (pmu->perf_event_attr_init_default)
1441 pmu->perf_event_attr_init_default(pmu, &attr);
1442
1443 attr.type = pmu->type;
1444
1445 if (list_empty(&parsed_terms.terms)) {
1446 evsel = __add_event(list, &parse_state->idx, &attr,
1447 /*init_attr=*/true, /*name=*/NULL,
1448 /*metric_id=*/NULL, pmu,
1449 /*config_terms=*/NULL, auto_merge_stats,
1450 /*cpu_list=*/NULL);
1451 return evsel ? 0 : -ENOMEM;
1452 }
1453
1454 /* Configure attr/terms with a known PMU, this will set hardcoded terms. */
1455 if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1456 parse_events_terms__exit(&parsed_terms);
1457 return -EINVAL;
1458 }
1459
1460 /* Look for event names in the terms and rewrite into format based terms. */
1461 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, &parsed_terms,
1462 &info, &alias_rewrote_terms, err)) {
1463 parse_events_terms__exit(&parsed_terms);
1464 return -EINVAL;
1465 }
1466
1467 if (verbose > 1) {
1468 struct strbuf sb;
1469
1470 strbuf_init(&sb, /*hint=*/ 0);
1471 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1472 fprintf(stderr, "..after resolving event: %s/%s/\n", name, sb.buf);
1473 strbuf_release(&sb);
1474 }
1475
1476 /* Configure attr/terms again if an alias was expanded. */
1477 if (alias_rewrote_terms &&
1478 config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1479 parse_events_terms__exit(&parsed_terms);
1480 return -EINVAL;
1481 }
1482
1483 if (get_config_terms(&parsed_terms, &config_terms)) {
1484 parse_events_terms__exit(&parsed_terms);
1485 return -ENOMEM;
1486 }
1487
1488 /*
1489 * When using default config, record which bits of attr->config were
1490 * changed by the user.
1491 */
1492 if (pmu->perf_event_attr_init_default &&
1493 get_config_chgs(pmu, &parsed_terms, &config_terms)) {
1494 parse_events_terms__exit(&parsed_terms);
1495 return -ENOMEM;
1496 }
1497
1498 if (!parse_state->fake_pmu &&
1499 perf_pmu__config(pmu, &attr, &parsed_terms, parse_state->error)) {
1500 free_config_terms(&config_terms);
1501 parse_events_terms__exit(&parsed_terms);
1502 return -EINVAL;
1503 }
1504
1505 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true,
1506 get_config_name(&parsed_terms),
1507 get_config_metric_id(&parsed_terms), pmu,
1508 &config_terms, auto_merge_stats, /*cpu_list=*/NULL);
1509 if (!evsel) {
1510 parse_events_terms__exit(&parsed_terms);
1511 return -ENOMEM;
1512 }
1513
1514 if (evsel->name)
1515 evsel->use_config_name = true;
1516
1517 evsel->percore = config_term_percore(&evsel->config_terms);
1518
1519 if (parse_state->fake_pmu) {
1520 parse_events_terms__exit(&parsed_terms);
1521 return 0;
1522 }
1523
1524 parse_events_terms__exit(&parsed_terms);
1525 free((char *)evsel->unit);
1526 evsel->unit = strdup(info.unit);
1527 evsel->scale = info.scale;
1528 evsel->per_pkg = info.per_pkg;
1529 evsel->snapshot = info.snapshot;
1530 return 0;
1531}
1532
1533int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1534 const char *event_name,
1535 const struct parse_events_terms *const_parsed_terms,
1536 struct list_head **listp, void *loc_)
1537{
1538 struct parse_events_term *term;
1539 struct list_head *list = NULL;
1540 struct perf_pmu *pmu = NULL;
1541 YYLTYPE *loc = loc_;
1542 int ok = 0;
1543 const char *config;
1544 struct parse_events_terms parsed_terms;
1545
1546 *listp = NULL;
1547
1548 parse_events_terms__init(&parsed_terms);
1549 if (const_parsed_terms) {
1550 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1551
1552 if (ret)
1553 return ret;
1554 }
1555
1556 config = strdup(event_name);
1557 if (!config)
1558 goto out_err;
1559
1560 if (parse_events_term__num(&term,
1561 PARSE_EVENTS__TERM_TYPE_USER,
1562 config, /*num=*/1, /*novalue=*/true,
1563 loc, /*loc_val=*/NULL) < 0) {
1564 zfree(&config);
1565 goto out_err;
1566 }
1567 list_add_tail(&term->list, &parsed_terms.terms);
1568
1569 /* Add it for all PMUs that support the alias */
1570 list = malloc(sizeof(struct list_head));
1571 if (!list)
1572 goto out_err;
1573
1574 INIT_LIST_HEAD(list);
1575
1576 while ((pmu = perf_pmus__scan(pmu)) != NULL) {
1577 bool auto_merge_stats;
1578
1579 if (parse_events__filter_pmu(parse_state, pmu))
1580 continue;
1581
1582 if (!perf_pmu__have_event(pmu, event_name))
1583 continue;
1584
1585 auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
1586 if (!parse_events_add_pmu(parse_state, list, pmu->name,
1587 &parsed_terms, auto_merge_stats, loc)) {
1588 struct strbuf sb;
1589
1590 strbuf_init(&sb, /*hint=*/ 0);
1591 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1592 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf);
1593 strbuf_release(&sb);
1594 ok++;
1595 }
1596 }
1597
1598 if (parse_state->fake_pmu) {
1599 if (!parse_events_add_pmu(parse_state, list, event_name, &parsed_terms,
1600 /*auto_merge_stats=*/true, loc)) {
1601 struct strbuf sb;
1602
1603 strbuf_init(&sb, /*hint=*/ 0);
1604 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1605 pr_debug("%s -> %s/%s/\n", event_name, "fake_pmu", sb.buf);
1606 strbuf_release(&sb);
1607 ok++;
1608 }
1609 }
1610
1611out_err:
1612 parse_events_terms__exit(&parsed_terms);
1613 if (ok)
1614 *listp = list;
1615 else
1616 free(list);
1617
1618 return ok ? 0 : -1;
1619}
1620
1621int parse_events__modifier_group(struct list_head *list,
1622 char *event_mod)
1623{
1624 return parse_events__modifier_event(list, event_mod, true);
1625}
1626
1627void parse_events__set_leader(char *name, struct list_head *list)
1628{
1629 struct evsel *leader;
1630
1631 if (list_empty(list)) {
1632 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1633 return;
1634 }
1635
1636 leader = list_first_entry(list, struct evsel, core.node);
1637 __perf_evlist__set_leader(list, &leader->core);
1638 leader->group_name = name;
1639}
1640
1641/* list_event is assumed to point to malloc'ed memory */
1642void parse_events_update_lists(struct list_head *list_event,
1643 struct list_head *list_all)
1644{
1645 /*
1646 * Called for single event definition. Update the
1647 * 'all event' list, and reinit the 'single event'
1648 * list, for next event definition.
1649 */
1650 list_splice_tail(list_event, list_all);
1651 free(list_event);
1652}
1653
1654struct event_modifier {
1655 int eu;
1656 int ek;
1657 int eh;
1658 int eH;
1659 int eG;
1660 int eI;
1661 int precise;
1662 int precise_max;
1663 int exclude_GH;
1664 int sample_read;
1665 int pinned;
1666 int weak;
1667 int exclusive;
1668 int bpf_counter;
1669};
1670
1671static int get_event_modifier(struct event_modifier *mod, char *str,
1672 struct evsel *evsel)
1673{
1674 int eu = evsel ? evsel->core.attr.exclude_user : 0;
1675 int ek = evsel ? evsel->core.attr.exclude_kernel : 0;
1676 int eh = evsel ? evsel->core.attr.exclude_hv : 0;
1677 int eH = evsel ? evsel->core.attr.exclude_host : 0;
1678 int eG = evsel ? evsel->core.attr.exclude_guest : 0;
1679 int eI = evsel ? evsel->core.attr.exclude_idle : 0;
1680 int precise = evsel ? evsel->core.attr.precise_ip : 0;
1681 int precise_max = 0;
1682 int sample_read = 0;
1683 int pinned = evsel ? evsel->core.attr.pinned : 0;
1684 int exclusive = evsel ? evsel->core.attr.exclusive : 0;
1685
1686 int exclude = eu | ek | eh;
1687 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1688 int weak = 0;
1689 int bpf_counter = 0;
1690
1691 memset(mod, 0, sizeof(*mod));
1692
1693 while (*str) {
1694 if (*str == 'u') {
1695 if (!exclude)
1696 exclude = eu = ek = eh = 1;
1697 if (!exclude_GH && !perf_guest)
1698 eG = 1;
1699 eu = 0;
1700 } else if (*str == 'k') {
1701 if (!exclude)
1702 exclude = eu = ek = eh = 1;
1703 ek = 0;
1704 } else if (*str == 'h') {
1705 if (!exclude)
1706 exclude = eu = ek = eh = 1;
1707 eh = 0;
1708 } else if (*str == 'G') {
1709 if (!exclude_GH)
1710 exclude_GH = eG = eH = 1;
1711 eG = 0;
1712 } else if (*str == 'H') {
1713 if (!exclude_GH)
1714 exclude_GH = eG = eH = 1;
1715 eH = 0;
1716 } else if (*str == 'I') {
1717 eI = 1;
1718 } else if (*str == 'p') {
1719 precise++;
1720 /* use of precise requires exclude_guest */
1721 if (!exclude_GH)
1722 eG = 1;
1723 } else if (*str == 'P') {
1724 precise_max = 1;
1725 } else if (*str == 'S') {
1726 sample_read = 1;
1727 } else if (*str == 'D') {
1728 pinned = 1;
1729 } else if (*str == 'e') {
1730 exclusive = 1;
1731 } else if (*str == 'W') {
1732 weak = 1;
1733 } else if (*str == 'b') {
1734 bpf_counter = 1;
1735 } else
1736 break;
1737
1738 ++str;
1739 }
1740
1741 /*
1742 * precise ip:
1743 *
1744 * 0 - SAMPLE_IP can have arbitrary skid
1745 * 1 - SAMPLE_IP must have constant skid
1746 * 2 - SAMPLE_IP requested to have 0 skid
1747 * 3 - SAMPLE_IP must have 0 skid
1748 *
1749 * See also PERF_RECORD_MISC_EXACT_IP
1750 */
1751 if (precise > 3)
1752 return -EINVAL;
1753
1754 mod->eu = eu;
1755 mod->ek = ek;
1756 mod->eh = eh;
1757 mod->eH = eH;
1758 mod->eG = eG;
1759 mod->eI = eI;
1760 mod->precise = precise;
1761 mod->precise_max = precise_max;
1762 mod->exclude_GH = exclude_GH;
1763 mod->sample_read = sample_read;
1764 mod->pinned = pinned;
1765 mod->weak = weak;
1766 mod->bpf_counter = bpf_counter;
1767 mod->exclusive = exclusive;
1768
1769 return 0;
1770}
1771
1772/*
1773 * Basic modifier sanity check to validate it contains only one
1774 * instance of any modifier (apart from 'p') present.
1775 */
1776static int check_modifier(char *str)
1777{
1778 char *p = str;
1779
1780 /* The sizeof includes 0 byte as well. */
1781 if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1))
1782 return -1;
1783
1784 while (*p) {
1785 if (*p != 'p' && strchr(p + 1, *p))
1786 return -1;
1787 p++;
1788 }
1789
1790 return 0;
1791}
1792
1793int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1794{
1795 struct evsel *evsel;
1796 struct event_modifier mod;
1797
1798 if (str == NULL)
1799 return 0;
1800
1801 if (check_modifier(str))
1802 return -EINVAL;
1803
1804 if (!add && get_event_modifier(&mod, str, NULL))
1805 return -EINVAL;
1806
1807 __evlist__for_each_entry(list, evsel) {
1808 if (add && get_event_modifier(&mod, str, evsel))
1809 return -EINVAL;
1810
1811 evsel->core.attr.exclude_user = mod.eu;
1812 evsel->core.attr.exclude_kernel = mod.ek;
1813 evsel->core.attr.exclude_hv = mod.eh;
1814 evsel->core.attr.precise_ip = mod.precise;
1815 evsel->core.attr.exclude_host = mod.eH;
1816 evsel->core.attr.exclude_guest = mod.eG;
1817 evsel->core.attr.exclude_idle = mod.eI;
1818 evsel->exclude_GH = mod.exclude_GH;
1819 evsel->sample_read = mod.sample_read;
1820 evsel->precise_max = mod.precise_max;
1821 evsel->weak_group = mod.weak;
1822 evsel->bpf_counter = mod.bpf_counter;
1823
1824 if (evsel__is_group_leader(evsel)) {
1825 evsel->core.attr.pinned = mod.pinned;
1826 evsel->core.attr.exclusive = mod.exclusive;
1827 }
1828 }
1829
1830 return 0;
1831}
1832
1833int parse_events_name(struct list_head *list, const char *name)
1834{
1835 struct evsel *evsel;
1836
1837 __evlist__for_each_entry(list, evsel) {
1838 if (!evsel->name) {
1839 evsel->name = strdup(name);
1840 if (!evsel->name)
1841 return -ENOMEM;
1842 }
1843 }
1844
1845 return 0;
1846}
1847
1848static int parse_events__scanner(const char *str,
1849 FILE *input,
1850 struct parse_events_state *parse_state)
1851{
1852 YY_BUFFER_STATE buffer;
1853 void *scanner;
1854 int ret;
1855
1856 ret = parse_events_lex_init_extra(parse_state, &scanner);
1857 if (ret)
1858 return ret;
1859
1860 if (str)
1861 buffer = parse_events__scan_string(str, scanner);
1862 else
1863 parse_events_set_in(input, scanner);
1864
1865#ifdef PARSER_DEBUG
1866 parse_events_debug = 1;
1867 parse_events_set_debug(1, scanner);
1868#endif
1869 ret = parse_events_parse(parse_state, scanner);
1870
1871 if (str) {
1872 parse_events__flush_buffer(buffer, scanner);
1873 parse_events__delete_buffer(buffer, scanner);
1874 }
1875 parse_events_lex_destroy(scanner);
1876 return ret;
1877}
1878
1879/*
1880 * parse event config string, return a list of event terms.
1881 */
1882int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input)
1883{
1884 struct parse_events_state parse_state = {
1885 .terms = NULL,
1886 .stoken = PE_START_TERMS,
1887 };
1888 int ret;
1889
1890 ret = parse_events__scanner(str, input, &parse_state);
1891 if (!ret)
1892 list_splice(&parse_state.terms->terms, &terms->terms);
1893
1894 zfree(&parse_state.terms);
1895 return ret;
1896}
1897
1898static int evsel__compute_group_pmu_name(struct evsel *evsel,
1899 const struct list_head *head)
1900{
1901 struct evsel *leader = evsel__leader(evsel);
1902 struct evsel *pos;
1903 const char *group_pmu_name;
1904 struct perf_pmu *pmu = evsel__find_pmu(evsel);
1905
1906 if (!pmu) {
1907 /*
1908 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU
1909 * is a core PMU, but in heterogeneous systems this is
1910 * unknown. For now pick the first core PMU.
1911 */
1912 pmu = perf_pmus__scan_core(NULL);
1913 }
1914 if (!pmu) {
1915 pr_debug("No PMU found for '%s'\n", evsel__name(evsel));
1916 return -EINVAL;
1917 }
1918 group_pmu_name = pmu->name;
1919 /*
1920 * Software events may be in a group with other uncore PMU events. Use
1921 * the pmu_name of the first non-software event to avoid breaking the
1922 * software event out of the group.
1923 *
1924 * Aux event leaders, like intel_pt, expect a group with events from
1925 * other PMUs, so substitute the AUX event's PMU in this case.
1926 */
1927 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) {
1928 struct perf_pmu *leader_pmu = evsel__find_pmu(leader);
1929
1930 if (!leader_pmu) {
1931 /* As with determining pmu above. */
1932 leader_pmu = perf_pmus__scan_core(NULL);
1933 }
1934 /*
1935 * Starting with the leader, find the first event with a named
1936 * non-software PMU. for_each_group_(member|evsel) isn't used as
1937 * the list isn't yet sorted putting evsel's in the same group
1938 * together.
1939 */
1940 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) {
1941 group_pmu_name = leader_pmu->name;
1942 } else if (leader->core.nr_members > 1) {
1943 list_for_each_entry(pos, head, core.node) {
1944 struct perf_pmu *pos_pmu;
1945
1946 if (pos == leader || evsel__leader(pos) != leader)
1947 continue;
1948 pos_pmu = evsel__find_pmu(pos);
1949 if (!pos_pmu) {
1950 /* As with determining pmu above. */
1951 pos_pmu = perf_pmus__scan_core(NULL);
1952 }
1953 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) {
1954 group_pmu_name = pos_pmu->name;
1955 break;
1956 }
1957 }
1958 }
1959 }
1960 /* Assign the actual name taking care that the fake PMU lacks a name. */
1961 evsel->group_pmu_name = strdup(group_pmu_name ?: "fake");
1962 return evsel->group_pmu_name ? 0 : -ENOMEM;
1963}
1964
1965__weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs)
1966{
1967 /* Order by insertion index. */
1968 return lhs->core.idx - rhs->core.idx;
1969}
1970
1971static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r)
1972{
1973 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node);
1974 const struct evsel *lhs = container_of(lhs_core, struct evsel, core);
1975 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node);
1976 const struct evsel *rhs = container_of(rhs_core, struct evsel, core);
1977 int *force_grouped_idx = _fg_idx;
1978 int lhs_sort_idx, rhs_sort_idx, ret;
1979 const char *lhs_pmu_name, *rhs_pmu_name;
1980 bool lhs_has_group, rhs_has_group;
1981
1982 /*
1983 * First sort by grouping/leader. Read the leader idx only if the evsel
1984 * is part of a group, by default ungrouped events will be sorted
1985 * relative to grouped events based on where the first ungrouped event
1986 * occurs. If both events don't have a group we want to fall-through to
1987 * the arch specific sorting, that can reorder and fix things like
1988 * Intel's topdown events.
1989 */
1990 if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) {
1991 lhs_has_group = true;
1992 lhs_sort_idx = lhs_core->leader->idx;
1993 } else {
1994 lhs_has_group = false;
1995 lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)
1996 ? *force_grouped_idx
1997 : lhs_core->idx;
1998 }
1999 if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) {
2000 rhs_has_group = true;
2001 rhs_sort_idx = rhs_core->leader->idx;
2002 } else {
2003 rhs_has_group = false;
2004 rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)
2005 ? *force_grouped_idx
2006 : rhs_core->idx;
2007 }
2008
2009 if (lhs_sort_idx != rhs_sort_idx)
2010 return lhs_sort_idx - rhs_sort_idx;
2011
2012 /* Group by PMU if there is a group. Groups can't span PMUs. */
2013 if (lhs_has_group && rhs_has_group) {
2014 lhs_pmu_name = lhs->group_pmu_name;
2015 rhs_pmu_name = rhs->group_pmu_name;
2016 ret = strcmp(lhs_pmu_name, rhs_pmu_name);
2017 if (ret)
2018 return ret;
2019 }
2020
2021 /* Architecture specific sorting. */
2022 return arch_evlist__cmp(lhs, rhs);
2023}
2024
2025static int parse_events__sort_events_and_fix_groups(struct list_head *list)
2026{
2027 int idx = 0, force_grouped_idx = -1;
2028 struct evsel *pos, *cur_leader = NULL;
2029 struct perf_evsel *cur_leaders_grp = NULL;
2030 bool idx_changed = false, cur_leader_force_grouped = false;
2031 int orig_num_leaders = 0, num_leaders = 0;
2032 int ret;
2033
2034 /*
2035 * Compute index to insert ungrouped events at. Place them where the
2036 * first ungrouped event appears.
2037 */
2038 list_for_each_entry(pos, list, core.node) {
2039 const struct evsel *pos_leader = evsel__leader(pos);
2040
2041 ret = evsel__compute_group_pmu_name(pos, list);
2042 if (ret)
2043 return ret;
2044
2045 if (pos == pos_leader)
2046 orig_num_leaders++;
2047
2048 /*
2049 * Ensure indexes are sequential, in particular for multiple
2050 * event lists being merged. The indexes are used to detect when
2051 * the user order is modified.
2052 */
2053 pos->core.idx = idx++;
2054
2055 /* Remember an index to sort all forced grouped events together to. */
2056 if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 &&
2057 arch_evsel__must_be_in_group(pos))
2058 force_grouped_idx = pos->core.idx;
2059 }
2060
2061 /* Sort events. */
2062 list_sort(&force_grouped_idx, list, evlist__cmp);
2063
2064 /*
2065 * Recompute groups, splitting for PMUs and adding groups for events
2066 * that require them.
2067 */
2068 idx = 0;
2069 list_for_each_entry(pos, list, core.node) {
2070 const struct evsel *pos_leader = evsel__leader(pos);
2071 const char *pos_pmu_name = pos->group_pmu_name;
2072 const char *cur_leader_pmu_name;
2073 bool pos_force_grouped = force_grouped_idx != -1 &&
2074 arch_evsel__must_be_in_group(pos);
2075
2076 /* Reset index and nr_members. */
2077 if (pos->core.idx != idx)
2078 idx_changed = true;
2079 pos->core.idx = idx++;
2080 pos->core.nr_members = 0;
2081
2082 /*
2083 * Set the group leader respecting the given groupings and that
2084 * groups can't span PMUs.
2085 */
2086 if (!cur_leader)
2087 cur_leader = pos;
2088
2089 cur_leader_pmu_name = cur_leader->group_pmu_name;
2090 if ((cur_leaders_grp != pos->core.leader &&
2091 (!pos_force_grouped || !cur_leader_force_grouped)) ||
2092 strcmp(cur_leader_pmu_name, pos_pmu_name)) {
2093 /* Event is for a different group/PMU than last. */
2094 cur_leader = pos;
2095 /*
2096 * Remember the leader's group before it is overwritten,
2097 * so that later events match as being in the same
2098 * group.
2099 */
2100 cur_leaders_grp = pos->core.leader;
2101 /*
2102 * Avoid forcing events into groups with events that
2103 * don't need to be in the group.
2104 */
2105 cur_leader_force_grouped = pos_force_grouped;
2106 }
2107 if (pos_leader != cur_leader) {
2108 /* The leader changed so update it. */
2109 evsel__set_leader(pos, cur_leader);
2110 }
2111 }
2112 list_for_each_entry(pos, list, core.node) {
2113 struct evsel *pos_leader = evsel__leader(pos);
2114
2115 if (pos == pos_leader)
2116 num_leaders++;
2117 pos_leader->core.nr_members++;
2118 }
2119 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0;
2120}
2121
2122int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter,
2123 struct parse_events_error *err, struct perf_pmu *fake_pmu,
2124 bool warn_if_reordered)
2125{
2126 struct parse_events_state parse_state = {
2127 .list = LIST_HEAD_INIT(parse_state.list),
2128 .idx = evlist->core.nr_entries,
2129 .error = err,
2130 .stoken = PE_START_EVENTS,
2131 .fake_pmu = fake_pmu,
2132 .pmu_filter = pmu_filter,
2133 .match_legacy_cache_terms = true,
2134 };
2135 int ret, ret2;
2136
2137 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state);
2138
2139 if (!ret && list_empty(&parse_state.list)) {
2140 WARN_ONCE(true, "WARNING: event parser found nothing\n");
2141 return -1;
2142 }
2143
2144 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list);
2145 if (ret2 < 0)
2146 return ret;
2147
2148 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus)
2149 pr_warning("WARNING: events were regrouped to match PMUs\n");
2150
2151 /*
2152 * Add list to the evlist even with errors to allow callers to clean up.
2153 */
2154 evlist__splice_list_tail(evlist, &parse_state.list);
2155
2156 if (!ret) {
2157 struct evsel *last;
2158
2159 last = evlist__last(evlist);
2160 last->cmdline_group_boundary = true;
2161
2162 return 0;
2163 }
2164
2165 /*
2166 * There are 2 users - builtin-record and builtin-test objects.
2167 * Both call evlist__delete in case of error, so we dont
2168 * need to bother.
2169 */
2170 return ret;
2171}
2172
2173int parse_event(struct evlist *evlist, const char *str)
2174{
2175 struct parse_events_error err;
2176 int ret;
2177
2178 parse_events_error__init(&err);
2179 ret = parse_events(evlist, str, &err);
2180 parse_events_error__exit(&err);
2181 return ret;
2182}
2183
2184void parse_events_error__init(struct parse_events_error *err)
2185{
2186 bzero(err, sizeof(*err));
2187}
2188
2189void parse_events_error__exit(struct parse_events_error *err)
2190{
2191 zfree(&err->str);
2192 zfree(&err->help);
2193 zfree(&err->first_str);
2194 zfree(&err->first_help);
2195}
2196
2197void parse_events_error__handle(struct parse_events_error *err, int idx,
2198 char *str, char *help)
2199{
2200 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n"))
2201 goto out_free;
2202 switch (err->num_errors) {
2203 case 0:
2204 err->idx = idx;
2205 err->str = str;
2206 err->help = help;
2207 break;
2208 case 1:
2209 err->first_idx = err->idx;
2210 err->idx = idx;
2211 err->first_str = err->str;
2212 err->str = str;
2213 err->first_help = err->help;
2214 err->help = help;
2215 break;
2216 default:
2217 pr_debug("Multiple errors dropping message: %s (%s)\n",
2218 err->str, err->help ?: "<no help>");
2219 free(err->str);
2220 err->str = str;
2221 free(err->help);
2222 err->help = help;
2223 break;
2224 }
2225 err->num_errors++;
2226 return;
2227
2228out_free:
2229 free(str);
2230 free(help);
2231}
2232
2233#define MAX_WIDTH 1000
2234static int get_term_width(void)
2235{
2236 struct winsize ws;
2237
2238 get_term_dimensions(&ws);
2239 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
2240}
2241
2242static void __parse_events_error__print(int err_idx, const char *err_str,
2243 const char *err_help, const char *event)
2244{
2245 const char *str = "invalid or unsupported event: ";
2246 char _buf[MAX_WIDTH];
2247 char *buf = (char *) event;
2248 int idx = 0;
2249 if (err_str) {
2250 /* -2 for extra '' in the final fprintf */
2251 int width = get_term_width() - 2;
2252 int len_event = strlen(event);
2253 int len_str, max_len, cut = 0;
2254
2255 /*
2256 * Maximum error index indent, we will cut
2257 * the event string if it's bigger.
2258 */
2259 int max_err_idx = 13;
2260
2261 /*
2262 * Let's be specific with the message when
2263 * we have the precise error.
2264 */
2265 str = "event syntax error: ";
2266 len_str = strlen(str);
2267 max_len = width - len_str;
2268
2269 buf = _buf;
2270
2271 /* We're cutting from the beginning. */
2272 if (err_idx > max_err_idx)
2273 cut = err_idx - max_err_idx;
2274
2275 strncpy(buf, event + cut, max_len);
2276
2277 /* Mark cut parts with '..' on both sides. */
2278 if (cut)
2279 buf[0] = buf[1] = '.';
2280
2281 if ((len_event - cut) > max_len) {
2282 buf[max_len - 1] = buf[max_len - 2] = '.';
2283 buf[max_len] = 0;
2284 }
2285
2286 idx = len_str + err_idx - cut;
2287 }
2288
2289 fprintf(stderr, "%s'%s'\n", str, buf);
2290 if (idx) {
2291 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);
2292 if (err_help)
2293 fprintf(stderr, "\n%s\n", err_help);
2294 }
2295}
2296
2297void parse_events_error__print(struct parse_events_error *err,
2298 const char *event)
2299{
2300 if (!err->num_errors)
2301 return;
2302
2303 __parse_events_error__print(err->idx, err->str, err->help, event);
2304
2305 if (err->num_errors > 1) {
2306 fputs("\nInitial error:\n", stderr);
2307 __parse_events_error__print(err->first_idx, err->first_str,
2308 err->first_help, event);
2309 }
2310}
2311
2312#undef MAX_WIDTH
2313
2314int parse_events_option(const struct option *opt, const char *str,
2315 int unset __maybe_unused)
2316{
2317 struct parse_events_option_args *args = opt->value;
2318 struct parse_events_error err;
2319 int ret;
2320
2321 parse_events_error__init(&err);
2322 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err,
2323 /*fake_pmu=*/NULL, /*warn_if_reordered=*/true);
2324
2325 if (ret) {
2326 parse_events_error__print(&err, str);
2327 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2328 }
2329 parse_events_error__exit(&err);
2330
2331 return ret;
2332}
2333
2334int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)
2335{
2336 struct parse_events_option_args *args = opt->value;
2337 int ret;
2338
2339 if (*args->evlistp == NULL) {
2340 *args->evlistp = evlist__new();
2341
2342 if (*args->evlistp == NULL) {
2343 fprintf(stderr, "Not enough memory to create evlist\n");
2344 return -1;
2345 }
2346 }
2347 ret = parse_events_option(opt, str, unset);
2348 if (ret) {
2349 evlist__delete(*args->evlistp);
2350 *args->evlistp = NULL;
2351 }
2352
2353 return ret;
2354}
2355
2356static int
2357foreach_evsel_in_last_glob(struct evlist *evlist,
2358 int (*func)(struct evsel *evsel,
2359 const void *arg),
2360 const void *arg)
2361{
2362 struct evsel *last = NULL;
2363 int err;
2364
2365 /*
2366 * Don't return when list_empty, give func a chance to report
2367 * error when it found last == NULL.
2368 *
2369 * So no need to WARN here, let *func do this.
2370 */
2371 if (evlist->core.nr_entries > 0)
2372 last = evlist__last(evlist);
2373
2374 do {
2375 err = (*func)(last, arg);
2376 if (err)
2377 return -1;
2378 if (!last)
2379 return 0;
2380
2381 if (last->core.node.prev == &evlist->core.entries)
2382 return 0;
2383 last = list_entry(last->core.node.prev, struct evsel, core.node);
2384 } while (!last->cmdline_group_boundary);
2385
2386 return 0;
2387}
2388
2389static int set_filter(struct evsel *evsel, const void *arg)
2390{
2391 const char *str = arg;
2392 bool found = false;
2393 int nr_addr_filters = 0;
2394 struct perf_pmu *pmu = NULL;
2395
2396 if (evsel == NULL) {
2397 fprintf(stderr,
2398 "--filter option should follow a -e tracepoint or HW tracer option\n");
2399 return -1;
2400 }
2401
2402 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2403 if (evsel__append_tp_filter(evsel, str) < 0) {
2404 fprintf(stderr,
2405 "not enough memory to hold filter string\n");
2406 return -1;
2407 }
2408
2409 return 0;
2410 }
2411
2412 while ((pmu = perf_pmus__scan(pmu)) != NULL)
2413 if (pmu->type == evsel->core.attr.type) {
2414 found = true;
2415 break;
2416 }
2417
2418 if (found)
2419 perf_pmu__scan_file(pmu, "nr_addr_filters",
2420 "%d", &nr_addr_filters);
2421
2422 if (!nr_addr_filters)
2423 return perf_bpf_filter__parse(&evsel->bpf_filters, str);
2424
2425 if (evsel__append_addr_filter(evsel, str) < 0) {
2426 fprintf(stderr,
2427 "not enough memory to hold filter string\n");
2428 return -1;
2429 }
2430
2431 return 0;
2432}
2433
2434int parse_filter(const struct option *opt, const char *str,
2435 int unset __maybe_unused)
2436{
2437 struct evlist *evlist = *(struct evlist **)opt->value;
2438
2439 return foreach_evsel_in_last_glob(evlist, set_filter,
2440 (const void *)str);
2441}
2442
2443static int add_exclude_perf_filter(struct evsel *evsel,
2444 const void *arg __maybe_unused)
2445{
2446 char new_filter[64];
2447
2448 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2449 fprintf(stderr,
2450 "--exclude-perf option should follow a -e tracepoint option\n");
2451 return -1;
2452 }
2453
2454 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2455
2456 if (evsel__append_tp_filter(evsel, new_filter) < 0) {
2457 fprintf(stderr,
2458 "not enough memory to hold filter string\n");
2459 return -1;
2460 }
2461
2462 return 0;
2463}
2464
2465int exclude_perf(const struct option *opt,
2466 const char *arg __maybe_unused,
2467 int unset __maybe_unused)
2468{
2469 struct evlist *evlist = *(struct evlist **)opt->value;
2470
2471 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2472 NULL);
2473}
2474
2475int parse_events__is_hardcoded_term(struct parse_events_term *term)
2476{
2477 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2478}
2479
2480static int new_term(struct parse_events_term **_term,
2481 struct parse_events_term *temp,
2482 char *str, u64 num)
2483{
2484 struct parse_events_term *term;
2485
2486 term = malloc(sizeof(*term));
2487 if (!term)
2488 return -ENOMEM;
2489
2490 *term = *temp;
2491 INIT_LIST_HEAD(&term->list);
2492 term->weak = false;
2493
2494 switch (term->type_val) {
2495 case PARSE_EVENTS__TERM_TYPE_NUM:
2496 term->val.num = num;
2497 break;
2498 case PARSE_EVENTS__TERM_TYPE_STR:
2499 term->val.str = str;
2500 break;
2501 default:
2502 free(term);
2503 return -EINVAL;
2504 }
2505
2506 *_term = term;
2507 return 0;
2508}
2509
2510int parse_events_term__num(struct parse_events_term **term,
2511 enum parse_events__term_type type_term,
2512 const char *config, u64 num,
2513 bool no_value,
2514 void *loc_term_, void *loc_val_)
2515{
2516 YYLTYPE *loc_term = loc_term_;
2517 YYLTYPE *loc_val = loc_val_;
2518
2519 struct parse_events_term temp = {
2520 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2521 .type_term = type_term,
2522 .config = config ? : strdup(config_term_name(type_term)),
2523 .no_value = no_value,
2524 .err_term = loc_term ? loc_term->first_column : 0,
2525 .err_val = loc_val ? loc_val->first_column : 0,
2526 };
2527
2528 return new_term(term, &temp, /*str=*/NULL, num);
2529}
2530
2531int parse_events_term__str(struct parse_events_term **term,
2532 enum parse_events__term_type type_term,
2533 char *config, char *str,
2534 void *loc_term_, void *loc_val_)
2535{
2536 YYLTYPE *loc_term = loc_term_;
2537 YYLTYPE *loc_val = loc_val_;
2538
2539 struct parse_events_term temp = {
2540 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2541 .type_term = type_term,
2542 .config = config,
2543 .err_term = loc_term ? loc_term->first_column : 0,
2544 .err_val = loc_val ? loc_val->first_column : 0,
2545 };
2546
2547 return new_term(term, &temp, str, /*num=*/0);
2548}
2549
2550int parse_events_term__term(struct parse_events_term **term,
2551 enum parse_events__term_type term_lhs,
2552 enum parse_events__term_type term_rhs,
2553 void *loc_term, void *loc_val)
2554{
2555 return parse_events_term__str(term, term_lhs, NULL,
2556 strdup(config_term_name(term_rhs)),
2557 loc_term, loc_val);
2558}
2559
2560int parse_events_term__clone(struct parse_events_term **new,
2561 struct parse_events_term *term)
2562{
2563 char *str;
2564 struct parse_events_term temp = *term;
2565
2566 temp.used = false;
2567 if (term->config) {
2568 temp.config = strdup(term->config);
2569 if (!temp.config)
2570 return -ENOMEM;
2571 }
2572 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2573 return new_term(new, &temp, /*str=*/NULL, term->val.num);
2574
2575 str = strdup(term->val.str);
2576 if (!str) {
2577 zfree(&temp.config);
2578 return -ENOMEM;
2579 }
2580 return new_term(new, &temp, str, /*num=*/0);
2581}
2582
2583void parse_events_term__delete(struct parse_events_term *term)
2584{
2585 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
2586 zfree(&term->val.str);
2587
2588 zfree(&term->config);
2589 free(term);
2590}
2591
2592static int parse_events_terms__copy(const struct parse_events_terms *src,
2593 struct parse_events_terms *dest)
2594{
2595 struct parse_events_term *term;
2596
2597 list_for_each_entry (term, &src->terms, list) {
2598 struct parse_events_term *n;
2599 int ret;
2600
2601 ret = parse_events_term__clone(&n, term);
2602 if (ret)
2603 return ret;
2604
2605 list_add_tail(&n->list, &dest->terms);
2606 }
2607 return 0;
2608}
2609
2610void parse_events_terms__init(struct parse_events_terms *terms)
2611{
2612 INIT_LIST_HEAD(&terms->terms);
2613}
2614
2615void parse_events_terms__exit(struct parse_events_terms *terms)
2616{
2617 struct parse_events_term *term, *h;
2618
2619 list_for_each_entry_safe(term, h, &terms->terms, list) {
2620 list_del_init(&term->list);
2621 parse_events_term__delete(term);
2622 }
2623}
2624
2625void parse_events_terms__delete(struct parse_events_terms *terms)
2626{
2627 if (!terms)
2628 return;
2629 parse_events_terms__exit(terms);
2630 free(terms);
2631}
2632
2633int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb)
2634{
2635 struct parse_events_term *term;
2636 bool first = true;
2637
2638 if (!terms)
2639 return 0;
2640
2641 list_for_each_entry(term, &terms->terms, list) {
2642 int ret;
2643
2644 if (!first) {
2645 ret = strbuf_addch(sb, ',');
2646 if (ret < 0)
2647 return ret;
2648 }
2649 first = false;
2650
2651 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2652 if (term->no_value) {
2653 assert(term->val.num == 1);
2654 ret = strbuf_addf(sb, "%s", term->config);
2655 } else
2656 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num);
2657 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
2658 if (term->config) {
2659 ret = strbuf_addf(sb, "%s=", term->config);
2660 if (ret < 0)
2661 return ret;
2662 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) {
2663 ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term));
2664 if (ret < 0)
2665 return ret;
2666 }
2667 assert(!term->no_value);
2668 ret = strbuf_addf(sb, "%s", term->val.str);
2669 }
2670 if (ret < 0)
2671 return ret;
2672 }
2673 return 0;
2674}
2675
2676void parse_events_evlist_error(struct parse_events_state *parse_state,
2677 int idx, const char *str)
2678{
2679 if (!parse_state->error)
2680 return;
2681
2682 parse_events_error__handle(parse_state->error, idx, strdup(str), NULL);
2683}
2684
2685static void config_terms_list(char *buf, size_t buf_sz)
2686{
2687 int i;
2688 bool first = true;
2689
2690 buf[0] = '\0';
2691 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2692 const char *name = config_term_name(i);
2693
2694 if (!config_term_avail(i, NULL))
2695 continue;
2696 if (!name)
2697 continue;
2698 if (name[0] == '<')
2699 continue;
2700
2701 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2702 return;
2703
2704 if (!first)
2705 strcat(buf, ",");
2706 else
2707 first = false;
2708 strcat(buf, name);
2709 }
2710}
2711
2712/*
2713 * Return string contains valid config terms of an event.
2714 * @additional_terms: For terms such as PMU sysfs terms.
2715 */
2716char *parse_events_formats_error_string(char *additional_terms)
2717{
2718 char *str;
2719 /* "no-overwrite" is the longest name */
2720 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2721 (sizeof("no-overwrite") - 1)];
2722
2723 config_terms_list(static_terms, sizeof(static_terms));
2724 /* valid terms */
2725 if (additional_terms) {
2726 if (asprintf(&str, "valid terms: %s,%s",
2727 additional_terms, static_terms) < 0)
2728 goto fail;
2729 } else {
2730 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2731 goto fail;
2732 }
2733 return str;
2734
2735fail:
2736 return NULL;
2737}
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/hw_breakpoint.h>
3#include <linux/err.h>
4#include <linux/zalloc.h>
5#include <dirent.h>
6#include <errno.h>
7#include <sys/ioctl.h>
8#include <sys/types.h>
9#include <sys/stat.h>
10#include <fcntl.h>
11#include <sys/param.h>
12#include "term.h"
13#include "build-id.h"
14#include "evlist.h"
15#include "evsel.h"
16#include <subcmd/pager.h>
17#include <subcmd/parse-options.h>
18#include "parse-events.h"
19#include <subcmd/exec-cmd.h>
20#include "string2.h"
21#include "strlist.h"
22#include "symbol.h"
23#include "header.h"
24#include "bpf-loader.h"
25#include "debug.h"
26#include <api/fs/tracing_path.h>
27#include <perf/cpumap.h>
28#include "parse-events-bison.h"
29#define YY_EXTRA_TYPE void*
30#include "parse-events-flex.h"
31#include "pmu.h"
32#include "thread_map.h"
33#include "probe-file.h"
34#include "asm/bug.h"
35#include "util/parse-branch-options.h"
36#include "metricgroup.h"
37#include "util/evsel_config.h"
38#include "util/event.h"
39#include "util/pfm.h"
40#include "perf.h"
41
42#define MAX_NAME_LEN 100
43
44#ifdef PARSER_DEBUG
45extern int parse_events_debug;
46#endif
47int parse_events_parse(void *parse_state, void *scanner);
48static int get_config_terms(struct list_head *head_config,
49 struct list_head *head_terms __maybe_unused);
50
51static struct perf_pmu_event_symbol *perf_pmu_events_list;
52/*
53 * The variable indicates the number of supported pmu event symbols.
54 * 0 means not initialized and ready to init
55 * -1 means failed to init, don't try anymore
56 * >0 is the number of supported pmu event symbols
57 */
58static int perf_pmu_events_list_num;
59
60struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
61 [PERF_COUNT_HW_CPU_CYCLES] = {
62 .symbol = "cpu-cycles",
63 .alias = "cycles",
64 },
65 [PERF_COUNT_HW_INSTRUCTIONS] = {
66 .symbol = "instructions",
67 .alias = "",
68 },
69 [PERF_COUNT_HW_CACHE_REFERENCES] = {
70 .symbol = "cache-references",
71 .alias = "",
72 },
73 [PERF_COUNT_HW_CACHE_MISSES] = {
74 .symbol = "cache-misses",
75 .alias = "",
76 },
77 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
78 .symbol = "branch-instructions",
79 .alias = "branches",
80 },
81 [PERF_COUNT_HW_BRANCH_MISSES] = {
82 .symbol = "branch-misses",
83 .alias = "",
84 },
85 [PERF_COUNT_HW_BUS_CYCLES] = {
86 .symbol = "bus-cycles",
87 .alias = "",
88 },
89 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
90 .symbol = "stalled-cycles-frontend",
91 .alias = "idle-cycles-frontend",
92 },
93 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
94 .symbol = "stalled-cycles-backend",
95 .alias = "idle-cycles-backend",
96 },
97 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
98 .symbol = "ref-cycles",
99 .alias = "",
100 },
101};
102
103struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
104 [PERF_COUNT_SW_CPU_CLOCK] = {
105 .symbol = "cpu-clock",
106 .alias = "",
107 },
108 [PERF_COUNT_SW_TASK_CLOCK] = {
109 .symbol = "task-clock",
110 .alias = "",
111 },
112 [PERF_COUNT_SW_PAGE_FAULTS] = {
113 .symbol = "page-faults",
114 .alias = "faults",
115 },
116 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
117 .symbol = "context-switches",
118 .alias = "cs",
119 },
120 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
121 .symbol = "cpu-migrations",
122 .alias = "migrations",
123 },
124 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
125 .symbol = "minor-faults",
126 .alias = "",
127 },
128 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
129 .symbol = "major-faults",
130 .alias = "",
131 },
132 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
133 .symbol = "alignment-faults",
134 .alias = "",
135 },
136 [PERF_COUNT_SW_EMULATION_FAULTS] = {
137 .symbol = "emulation-faults",
138 .alias = "",
139 },
140 [PERF_COUNT_SW_DUMMY] = {
141 .symbol = "dummy",
142 .alias = "",
143 },
144 [PERF_COUNT_SW_BPF_OUTPUT] = {
145 .symbol = "bpf-output",
146 .alias = "",
147 },
148};
149
150#define __PERF_EVENT_FIELD(config, name) \
151 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
152
153#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
154#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
155#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
156#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
157
158#define for_each_subsystem(sys_dir, sys_dirent) \
159 while ((sys_dirent = readdir(sys_dir)) != NULL) \
160 if (sys_dirent->d_type == DT_DIR && \
161 (strcmp(sys_dirent->d_name, ".")) && \
162 (strcmp(sys_dirent->d_name, "..")))
163
164static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir)
165{
166 char evt_path[MAXPATHLEN];
167 int fd;
168
169 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name);
170 fd = open(evt_path, O_RDONLY);
171 if (fd < 0)
172 return -EINVAL;
173 close(fd);
174
175 return 0;
176}
177
178#define for_each_event(dir_path, evt_dir, evt_dirent) \
179 while ((evt_dirent = readdir(evt_dir)) != NULL) \
180 if (evt_dirent->d_type == DT_DIR && \
181 (strcmp(evt_dirent->d_name, ".")) && \
182 (strcmp(evt_dirent->d_name, "..")) && \
183 (!tp_event_has_id(dir_path, evt_dirent)))
184
185#define MAX_EVENT_LENGTH 512
186
187void parse_events__handle_error(struct parse_events_error *err, int idx,
188 char *str, char *help)
189{
190 if (WARN(!str, "WARNING: failed to provide error string\n")) {
191 free(help);
192 return;
193 }
194 switch (err->num_errors) {
195 case 0:
196 err->idx = idx;
197 err->str = str;
198 err->help = help;
199 break;
200 case 1:
201 err->first_idx = err->idx;
202 err->idx = idx;
203 err->first_str = err->str;
204 err->str = str;
205 err->first_help = err->help;
206 err->help = help;
207 break;
208 default:
209 pr_debug("Multiple errors dropping message: %s (%s)\n",
210 err->str, err->help);
211 free(err->str);
212 err->str = str;
213 free(err->help);
214 err->help = help;
215 break;
216 }
217 err->num_errors++;
218}
219
220struct tracepoint_path *tracepoint_id_to_path(u64 config)
221{
222 struct tracepoint_path *path = NULL;
223 DIR *sys_dir, *evt_dir;
224 struct dirent *sys_dirent, *evt_dirent;
225 char id_buf[24];
226 int fd;
227 u64 id;
228 char evt_path[MAXPATHLEN];
229 char *dir_path;
230
231 sys_dir = tracing_events__opendir();
232 if (!sys_dir)
233 return NULL;
234
235 for_each_subsystem(sys_dir, sys_dirent) {
236 dir_path = get_events_file(sys_dirent->d_name);
237 if (!dir_path)
238 continue;
239 evt_dir = opendir(dir_path);
240 if (!evt_dir)
241 goto next;
242
243 for_each_event(dir_path, evt_dir, evt_dirent) {
244
245 scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
246 evt_dirent->d_name);
247 fd = open(evt_path, O_RDONLY);
248 if (fd < 0)
249 continue;
250 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
251 close(fd);
252 continue;
253 }
254 close(fd);
255 id = atoll(id_buf);
256 if (id == config) {
257 put_events_file(dir_path);
258 closedir(evt_dir);
259 closedir(sys_dir);
260 path = zalloc(sizeof(*path));
261 if (!path)
262 return NULL;
263 if (asprintf(&path->system, "%.*s", MAX_EVENT_LENGTH, sys_dirent->d_name) < 0) {
264 free(path);
265 return NULL;
266 }
267 if (asprintf(&path->name, "%.*s", MAX_EVENT_LENGTH, evt_dirent->d_name) < 0) {
268 zfree(&path->system);
269 free(path);
270 return NULL;
271 }
272 return path;
273 }
274 }
275 closedir(evt_dir);
276next:
277 put_events_file(dir_path);
278 }
279
280 closedir(sys_dir);
281 return NULL;
282}
283
284struct tracepoint_path *tracepoint_name_to_path(const char *name)
285{
286 struct tracepoint_path *path = zalloc(sizeof(*path));
287 char *str = strchr(name, ':');
288
289 if (path == NULL || str == NULL) {
290 free(path);
291 return NULL;
292 }
293
294 path->system = strndup(name, str - name);
295 path->name = strdup(str+1);
296
297 if (path->system == NULL || path->name == NULL) {
298 zfree(&path->system);
299 zfree(&path->name);
300 zfree(&path);
301 }
302
303 return path;
304}
305
306const char *event_type(int type)
307{
308 switch (type) {
309 case PERF_TYPE_HARDWARE:
310 return "hardware";
311
312 case PERF_TYPE_SOFTWARE:
313 return "software";
314
315 case PERF_TYPE_TRACEPOINT:
316 return "tracepoint";
317
318 case PERF_TYPE_HW_CACHE:
319 return "hardware-cache";
320
321 default:
322 break;
323 }
324
325 return "unknown";
326}
327
328static int parse_events__is_name_term(struct parse_events_term *term)
329{
330 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
331}
332
333static char *get_config_name(struct list_head *head_terms)
334{
335 struct parse_events_term *term;
336
337 if (!head_terms)
338 return NULL;
339
340 list_for_each_entry(term, head_terms, list)
341 if (parse_events__is_name_term(term))
342 return term->val.str;
343
344 return NULL;
345}
346
347static struct evsel *
348__add_event(struct list_head *list, int *idx,
349 struct perf_event_attr *attr,
350 bool init_attr,
351 char *name, struct perf_pmu *pmu,
352 struct list_head *config_terms, bool auto_merge_stats,
353 const char *cpu_list)
354{
355 struct evsel *evsel;
356 struct perf_cpu_map *cpus = pmu ? pmu->cpus :
357 cpu_list ? perf_cpu_map__new(cpu_list) : NULL;
358
359 if (init_attr)
360 event_attr_init(attr);
361
362 evsel = evsel__new_idx(attr, *idx);
363 if (!evsel)
364 return NULL;
365
366 (*idx)++;
367 evsel->core.cpus = perf_cpu_map__get(cpus);
368 evsel->core.own_cpus = perf_cpu_map__get(cpus);
369 evsel->core.system_wide = pmu ? pmu->is_uncore : false;
370 evsel->auto_merge_stats = auto_merge_stats;
371
372 if (name)
373 evsel->name = strdup(name);
374
375 if (config_terms)
376 list_splice(config_terms, &evsel->config_terms);
377
378 if (list)
379 list_add_tail(&evsel->core.node, list);
380
381 return evsel;
382}
383
384struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
385 char *name, struct perf_pmu *pmu)
386{
387 return __add_event(NULL, &idx, attr, false, name, pmu, NULL, false,
388 NULL);
389}
390
391static int add_event(struct list_head *list, int *idx,
392 struct perf_event_attr *attr, char *name,
393 struct list_head *config_terms)
394{
395 return __add_event(list, idx, attr, true, name, NULL, config_terms,
396 false, NULL) ? 0 : -ENOMEM;
397}
398
399static int add_event_tool(struct list_head *list, int *idx,
400 enum perf_tool_event tool_event)
401{
402 struct evsel *evsel;
403 struct perf_event_attr attr = {
404 .type = PERF_TYPE_SOFTWARE,
405 .config = PERF_COUNT_SW_DUMMY,
406 };
407
408 evsel = __add_event(list, idx, &attr, true, NULL, NULL, NULL, false,
409 "0");
410 if (!evsel)
411 return -ENOMEM;
412 evsel->tool_event = tool_event;
413 if (tool_event == PERF_TOOL_DURATION_TIME)
414 evsel->unit = "ns";
415 return 0;
416}
417
418static int parse_aliases(char *str, const char *names[][EVSEL__MAX_ALIASES], int size)
419{
420 int i, j;
421 int n, longest = -1;
422
423 for (i = 0; i < size; i++) {
424 for (j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {
425 n = strlen(names[i][j]);
426 if (n > longest && !strncasecmp(str, names[i][j], n))
427 longest = n;
428 }
429 if (longest > 0)
430 return i;
431 }
432
433 return -1;
434}
435
436typedef int config_term_func_t(struct perf_event_attr *attr,
437 struct parse_events_term *term,
438 struct parse_events_error *err);
439static int config_term_common(struct perf_event_attr *attr,
440 struct parse_events_term *term,
441 struct parse_events_error *err);
442static int config_attr(struct perf_event_attr *attr,
443 struct list_head *head,
444 struct parse_events_error *err,
445 config_term_func_t config_term);
446
447int parse_events_add_cache(struct list_head *list, int *idx,
448 char *type, char *op_result1, char *op_result2,
449 struct parse_events_error *err,
450 struct list_head *head_config)
451{
452 struct perf_event_attr attr;
453 LIST_HEAD(config_terms);
454 char name[MAX_NAME_LEN], *config_name;
455 int cache_type = -1, cache_op = -1, cache_result = -1;
456 char *op_result[2] = { op_result1, op_result2 };
457 int i, n;
458
459 /*
460 * No fallback - if we cannot get a clear cache type
461 * then bail out:
462 */
463 cache_type = parse_aliases(type, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX);
464 if (cache_type == -1)
465 return -EINVAL;
466
467 config_name = get_config_name(head_config);
468 n = snprintf(name, MAX_NAME_LEN, "%s", type);
469
470 for (i = 0; (i < 2) && (op_result[i]); i++) {
471 char *str = op_result[i];
472
473 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
474
475 if (cache_op == -1) {
476 cache_op = parse_aliases(str, evsel__hw_cache_op,
477 PERF_COUNT_HW_CACHE_OP_MAX);
478 if (cache_op >= 0) {
479 if (!evsel__is_cache_op_valid(cache_type, cache_op))
480 return -EINVAL;
481 continue;
482 }
483 }
484
485 if (cache_result == -1) {
486 cache_result = parse_aliases(str, evsel__hw_cache_result,
487 PERF_COUNT_HW_CACHE_RESULT_MAX);
488 if (cache_result >= 0)
489 continue;
490 }
491 }
492
493 /*
494 * Fall back to reads:
495 */
496 if (cache_op == -1)
497 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
498
499 /*
500 * Fall back to accesses:
501 */
502 if (cache_result == -1)
503 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
504
505 memset(&attr, 0, sizeof(attr));
506 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
507 attr.type = PERF_TYPE_HW_CACHE;
508
509 if (head_config) {
510 if (config_attr(&attr, head_config, err,
511 config_term_common))
512 return -EINVAL;
513
514 if (get_config_terms(head_config, &config_terms))
515 return -ENOMEM;
516 }
517 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
518}
519
520static void tracepoint_error(struct parse_events_error *e, int err,
521 const char *sys, const char *name)
522{
523 const char *str;
524 char help[BUFSIZ];
525
526 if (!e)
527 return;
528
529 /*
530 * We get error directly from syscall errno ( > 0),
531 * or from encoded pointer's error ( < 0).
532 */
533 err = abs(err);
534
535 switch (err) {
536 case EACCES:
537 str = "can't access trace events";
538 break;
539 case ENOENT:
540 str = "unknown tracepoint";
541 break;
542 default:
543 str = "failed to add tracepoint";
544 break;
545 }
546
547 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
548 parse_events__handle_error(e, 0, strdup(str), strdup(help));
549}
550
551static int add_tracepoint(struct list_head *list, int *idx,
552 const char *sys_name, const char *evt_name,
553 struct parse_events_error *err,
554 struct list_head *head_config)
555{
556 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++);
557
558 if (IS_ERR(evsel)) {
559 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
560 return PTR_ERR(evsel);
561 }
562
563 if (head_config) {
564 LIST_HEAD(config_terms);
565
566 if (get_config_terms(head_config, &config_terms))
567 return -ENOMEM;
568 list_splice(&config_terms, &evsel->config_terms);
569 }
570
571 list_add_tail(&evsel->core.node, list);
572 return 0;
573}
574
575static int add_tracepoint_multi_event(struct list_head *list, int *idx,
576 const char *sys_name, const char *evt_name,
577 struct parse_events_error *err,
578 struct list_head *head_config)
579{
580 char *evt_path;
581 struct dirent *evt_ent;
582 DIR *evt_dir;
583 int ret = 0, found = 0;
584
585 evt_path = get_events_file(sys_name);
586 if (!evt_path) {
587 tracepoint_error(err, errno, sys_name, evt_name);
588 return -1;
589 }
590 evt_dir = opendir(evt_path);
591 if (!evt_dir) {
592 put_events_file(evt_path);
593 tracepoint_error(err, errno, sys_name, evt_name);
594 return -1;
595 }
596
597 while (!ret && (evt_ent = readdir(evt_dir))) {
598 if (!strcmp(evt_ent->d_name, ".")
599 || !strcmp(evt_ent->d_name, "..")
600 || !strcmp(evt_ent->d_name, "enable")
601 || !strcmp(evt_ent->d_name, "filter"))
602 continue;
603
604 if (!strglobmatch(evt_ent->d_name, evt_name))
605 continue;
606
607 found++;
608
609 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
610 err, head_config);
611 }
612
613 if (!found) {
614 tracepoint_error(err, ENOENT, sys_name, evt_name);
615 ret = -1;
616 }
617
618 put_events_file(evt_path);
619 closedir(evt_dir);
620 return ret;
621}
622
623static int add_tracepoint_event(struct list_head *list, int *idx,
624 const char *sys_name, const char *evt_name,
625 struct parse_events_error *err,
626 struct list_head *head_config)
627{
628 return strpbrk(evt_name, "*?") ?
629 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
630 err, head_config) :
631 add_tracepoint(list, idx, sys_name, evt_name,
632 err, head_config);
633}
634
635static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
636 const char *sys_name, const char *evt_name,
637 struct parse_events_error *err,
638 struct list_head *head_config)
639{
640 struct dirent *events_ent;
641 DIR *events_dir;
642 int ret = 0;
643
644 events_dir = tracing_events__opendir();
645 if (!events_dir) {
646 tracepoint_error(err, errno, sys_name, evt_name);
647 return -1;
648 }
649
650 while (!ret && (events_ent = readdir(events_dir))) {
651 if (!strcmp(events_ent->d_name, ".")
652 || !strcmp(events_ent->d_name, "..")
653 || !strcmp(events_ent->d_name, "enable")
654 || !strcmp(events_ent->d_name, "header_event")
655 || !strcmp(events_ent->d_name, "header_page"))
656 continue;
657
658 if (!strglobmatch(events_ent->d_name, sys_name))
659 continue;
660
661 ret = add_tracepoint_event(list, idx, events_ent->d_name,
662 evt_name, err, head_config);
663 }
664
665 closedir(events_dir);
666 return ret;
667}
668
669struct __add_bpf_event_param {
670 struct parse_events_state *parse_state;
671 struct list_head *list;
672 struct list_head *head_config;
673};
674
675static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj,
676 void *_param)
677{
678 LIST_HEAD(new_evsels);
679 struct __add_bpf_event_param *param = _param;
680 struct parse_events_state *parse_state = param->parse_state;
681 struct list_head *list = param->list;
682 struct evsel *pos;
683 int err;
684 /*
685 * Check if we should add the event, i.e. if it is a TP but starts with a '!',
686 * then don't add the tracepoint, this will be used for something else, like
687 * adding to a BPF_MAP_TYPE_PROG_ARRAY.
688 *
689 * See tools/perf/examples/bpf/augmented_raw_syscalls.c
690 */
691 if (group[0] == '!')
692 return 0;
693
694 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
695 group, event, fd);
696
697 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group,
698 event, parse_state->error,
699 param->head_config);
700 if (err) {
701 struct evsel *evsel, *tmp;
702
703 pr_debug("Failed to add BPF event %s:%s\n",
704 group, event);
705 list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) {
706 list_del_init(&evsel->core.node);
707 evsel__delete(evsel);
708 }
709 return err;
710 }
711 pr_debug("adding %s:%s\n", group, event);
712
713 list_for_each_entry(pos, &new_evsels, core.node) {
714 pr_debug("adding %s:%s to %p\n",
715 group, event, pos);
716 pos->bpf_fd = fd;
717 pos->bpf_obj = obj;
718 }
719 list_splice(&new_evsels, list);
720 return 0;
721}
722
723int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
724 struct list_head *list,
725 struct bpf_object *obj,
726 struct list_head *head_config)
727{
728 int err;
729 char errbuf[BUFSIZ];
730 struct __add_bpf_event_param param = {parse_state, list, head_config};
731 static bool registered_unprobe_atexit = false;
732
733 if (IS_ERR(obj) || !obj) {
734 snprintf(errbuf, sizeof(errbuf),
735 "Internal error: load bpf obj with NULL");
736 err = -EINVAL;
737 goto errout;
738 }
739
740 /*
741 * Register atexit handler before calling bpf__probe() so
742 * bpf__probe() don't need to unprobe probe points its already
743 * created when failure.
744 */
745 if (!registered_unprobe_atexit) {
746 atexit(bpf__clear);
747 registered_unprobe_atexit = true;
748 }
749
750 err = bpf__probe(obj);
751 if (err) {
752 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
753 goto errout;
754 }
755
756 err = bpf__load(obj);
757 if (err) {
758 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
759 goto errout;
760 }
761
762 err = bpf__foreach_event(obj, add_bpf_event, ¶m);
763 if (err) {
764 snprintf(errbuf, sizeof(errbuf),
765 "Attach events in BPF object failed");
766 goto errout;
767 }
768
769 return 0;
770errout:
771 parse_events__handle_error(parse_state->error, 0,
772 strdup(errbuf), strdup("(add -v to see detail)"));
773 return err;
774}
775
776static int
777parse_events_config_bpf(struct parse_events_state *parse_state,
778 struct bpf_object *obj,
779 struct list_head *head_config)
780{
781 struct parse_events_term *term;
782 int error_pos;
783
784 if (!head_config || list_empty(head_config))
785 return 0;
786
787 list_for_each_entry(term, head_config, list) {
788 int err;
789
790 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
791 parse_events__handle_error(parse_state->error, term->err_term,
792 strdup("Invalid config term for BPF object"),
793 NULL);
794 return -EINVAL;
795 }
796
797 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
798 if (err) {
799 char errbuf[BUFSIZ];
800 int idx;
801
802 bpf__strerror_config_obj(obj, term, parse_state->evlist,
803 &error_pos, err, errbuf,
804 sizeof(errbuf));
805
806 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
807 idx = term->err_val;
808 else
809 idx = term->err_term + error_pos;
810
811 parse_events__handle_error(parse_state->error, idx,
812 strdup(errbuf),
813 strdup(
814"Hint:\tValid config terms:\n"
815" \tmap:[<arraymap>].value<indices>=[value]\n"
816" \tmap:[<eventmap>].event<indices>=[event]\n"
817"\n"
818" \twhere <indices> is something like [0,3...5] or [all]\n"
819" \t(add -v to see detail)"));
820 return err;
821 }
822 }
823 return 0;
824}
825
826/*
827 * Split config terms:
828 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
829 * 'call-graph=fp' is 'evt config', should be applied to each
830 * events in bpf.c.
831 * 'map:array.value[0]=1' is 'obj config', should be processed
832 * with parse_events_config_bpf.
833 *
834 * Move object config terms from the first list to obj_head_config.
835 */
836static void
837split_bpf_config_terms(struct list_head *evt_head_config,
838 struct list_head *obj_head_config)
839{
840 struct parse_events_term *term, *temp;
841
842 /*
843 * Currectly, all possible user config term
844 * belong to bpf object. parse_events__is_hardcoded_term()
845 * happends to be a good flag.
846 *
847 * See parse_events_config_bpf() and
848 * config_term_tracepoint().
849 */
850 list_for_each_entry_safe(term, temp, evt_head_config, list)
851 if (!parse_events__is_hardcoded_term(term))
852 list_move_tail(&term->list, obj_head_config);
853}
854
855int parse_events_load_bpf(struct parse_events_state *parse_state,
856 struct list_head *list,
857 char *bpf_file_name,
858 bool source,
859 struct list_head *head_config)
860{
861 int err;
862 struct bpf_object *obj;
863 LIST_HEAD(obj_head_config);
864
865 if (head_config)
866 split_bpf_config_terms(head_config, &obj_head_config);
867
868 obj = bpf__prepare_load(bpf_file_name, source);
869 if (IS_ERR(obj)) {
870 char errbuf[BUFSIZ];
871
872 err = PTR_ERR(obj);
873
874 if (err == -ENOTSUP)
875 snprintf(errbuf, sizeof(errbuf),
876 "BPF support is not compiled");
877 else
878 bpf__strerror_prepare_load(bpf_file_name,
879 source,
880 -err, errbuf,
881 sizeof(errbuf));
882
883 parse_events__handle_error(parse_state->error, 0,
884 strdup(errbuf), strdup("(add -v to see detail)"));
885 return err;
886 }
887
888 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config);
889 if (err)
890 return err;
891 err = parse_events_config_bpf(parse_state, obj, &obj_head_config);
892
893 /*
894 * Caller doesn't know anything about obj_head_config,
895 * so combine them together again before returnning.
896 */
897 if (head_config)
898 list_splice_tail(&obj_head_config, head_config);
899 return err;
900}
901
902static int
903parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
904{
905 int i;
906
907 for (i = 0; i < 3; i++) {
908 if (!type || !type[i])
909 break;
910
911#define CHECK_SET_TYPE(bit) \
912do { \
913 if (attr->bp_type & bit) \
914 return -EINVAL; \
915 else \
916 attr->bp_type |= bit; \
917} while (0)
918
919 switch (type[i]) {
920 case 'r':
921 CHECK_SET_TYPE(HW_BREAKPOINT_R);
922 break;
923 case 'w':
924 CHECK_SET_TYPE(HW_BREAKPOINT_W);
925 break;
926 case 'x':
927 CHECK_SET_TYPE(HW_BREAKPOINT_X);
928 break;
929 default:
930 return -EINVAL;
931 }
932 }
933
934#undef CHECK_SET_TYPE
935
936 if (!attr->bp_type) /* Default */
937 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
938
939 return 0;
940}
941
942int parse_events_add_breakpoint(struct list_head *list, int *idx,
943 void *ptr, char *type, u64 len)
944{
945 struct perf_event_attr attr;
946
947 memset(&attr, 0, sizeof(attr));
948 attr.bp_addr = (unsigned long) ptr;
949
950 if (parse_breakpoint_type(type, &attr))
951 return -EINVAL;
952
953 /* Provide some defaults if len is not specified */
954 if (!len) {
955 if (attr.bp_type == HW_BREAKPOINT_X)
956 len = sizeof(long);
957 else
958 len = HW_BREAKPOINT_LEN_4;
959 }
960
961 attr.bp_len = len;
962
963 attr.type = PERF_TYPE_BREAKPOINT;
964 attr.sample_period = 1;
965
966 return add_event(list, idx, &attr, NULL, NULL);
967}
968
969static int check_type_val(struct parse_events_term *term,
970 struct parse_events_error *err,
971 int type)
972{
973 if (type == term->type_val)
974 return 0;
975
976 if (err) {
977 parse_events__handle_error(err, term->err_val,
978 type == PARSE_EVENTS__TERM_TYPE_NUM
979 ? strdup("expected numeric value")
980 : strdup("expected string value"),
981 NULL);
982 }
983 return -EINVAL;
984}
985
986/*
987 * Update according to parse-events.l
988 */
989static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
990 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
991 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
992 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
993 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
994 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
995 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
996 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
997 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
998 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
999 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
1000 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
1001 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
1002 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
1003 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
1004 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr",
1005 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
1006 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
1007 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
1008 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore",
1009 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output",
1010 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size",
1011};
1012
1013static bool config_term_shrinked;
1014
1015static bool
1016config_term_avail(int term_type, struct parse_events_error *err)
1017{
1018 char *err_str;
1019
1020 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
1021 parse_events__handle_error(err, -1,
1022 strdup("Invalid term_type"), NULL);
1023 return false;
1024 }
1025 if (!config_term_shrinked)
1026 return true;
1027
1028 switch (term_type) {
1029 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1030 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1031 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1032 case PARSE_EVENTS__TERM_TYPE_NAME:
1033 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1034 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1035 return true;
1036 default:
1037 if (!err)
1038 return false;
1039
1040 /* term_type is validated so indexing is safe */
1041 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",
1042 config_term_names[term_type]) >= 0)
1043 parse_events__handle_error(err, -1, err_str, NULL);
1044 return false;
1045 }
1046}
1047
1048void parse_events__shrink_config_terms(void)
1049{
1050 config_term_shrinked = true;
1051}
1052
1053static int config_term_common(struct perf_event_attr *attr,
1054 struct parse_events_term *term,
1055 struct parse_events_error *err)
1056{
1057#define CHECK_TYPE_VAL(type) \
1058do { \
1059 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
1060 return -EINVAL; \
1061} while (0)
1062
1063 switch (term->type_term) {
1064 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1065 CHECK_TYPE_VAL(NUM);
1066 attr->config = term->val.num;
1067 break;
1068 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1069 CHECK_TYPE_VAL(NUM);
1070 attr->config1 = term->val.num;
1071 break;
1072 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1073 CHECK_TYPE_VAL(NUM);
1074 attr->config2 = term->val.num;
1075 break;
1076 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1077 CHECK_TYPE_VAL(NUM);
1078 break;
1079 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1080 CHECK_TYPE_VAL(NUM);
1081 break;
1082 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1083 CHECK_TYPE_VAL(STR);
1084 if (strcmp(term->val.str, "no") &&
1085 parse_branch_str(term->val.str,
1086 &attr->branch_sample_type)) {
1087 parse_events__handle_error(err, term->err_val,
1088 strdup("invalid branch sample type"),
1089 NULL);
1090 return -EINVAL;
1091 }
1092 break;
1093 case PARSE_EVENTS__TERM_TYPE_TIME:
1094 CHECK_TYPE_VAL(NUM);
1095 if (term->val.num > 1) {
1096 parse_events__handle_error(err, term->err_val,
1097 strdup("expected 0 or 1"),
1098 NULL);
1099 return -EINVAL;
1100 }
1101 break;
1102 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1103 CHECK_TYPE_VAL(STR);
1104 break;
1105 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1106 CHECK_TYPE_VAL(NUM);
1107 break;
1108 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1109 CHECK_TYPE_VAL(NUM);
1110 break;
1111 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1112 CHECK_TYPE_VAL(NUM);
1113 break;
1114 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1115 CHECK_TYPE_VAL(NUM);
1116 break;
1117 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1118 CHECK_TYPE_VAL(NUM);
1119 break;
1120 case PARSE_EVENTS__TERM_TYPE_NAME:
1121 CHECK_TYPE_VAL(STR);
1122 break;
1123 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1124 CHECK_TYPE_VAL(NUM);
1125 break;
1126 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1127 CHECK_TYPE_VAL(NUM);
1128 break;
1129 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1130 CHECK_TYPE_VAL(NUM);
1131 if ((unsigned int)term->val.num > 1) {
1132 parse_events__handle_error(err, term->err_val,
1133 strdup("expected 0 or 1"),
1134 NULL);
1135 return -EINVAL;
1136 }
1137 break;
1138 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1139 CHECK_TYPE_VAL(NUM);
1140 break;
1141 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1142 CHECK_TYPE_VAL(NUM);
1143 if (term->val.num > UINT_MAX) {
1144 parse_events__handle_error(err, term->err_val,
1145 strdup("too big"),
1146 NULL);
1147 return -EINVAL;
1148 }
1149 break;
1150 default:
1151 parse_events__handle_error(err, term->err_term,
1152 strdup("unknown term"),
1153 parse_events_formats_error_string(NULL));
1154 return -EINVAL;
1155 }
1156
1157 /*
1158 * Check term availbility after basic checking so
1159 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1160 *
1161 * If check availbility at the entry of this function,
1162 * user will see "'<sysfs term>' is not usable in 'perf stat'"
1163 * if an invalid config term is provided for legacy events
1164 * (for example, instructions/badterm/...), which is confusing.
1165 */
1166 if (!config_term_avail(term->type_term, err))
1167 return -EINVAL;
1168 return 0;
1169#undef CHECK_TYPE_VAL
1170}
1171
1172static int config_term_pmu(struct perf_event_attr *attr,
1173 struct parse_events_term *term,
1174 struct parse_events_error *err)
1175{
1176 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1177 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1178 /*
1179 * Always succeed for sysfs terms, as we dont know
1180 * at this point what type they need to have.
1181 */
1182 return 0;
1183 else
1184 return config_term_common(attr, term, err);
1185}
1186
1187static int config_term_tracepoint(struct perf_event_attr *attr,
1188 struct parse_events_term *term,
1189 struct parse_events_error *err)
1190{
1191 switch (term->type_term) {
1192 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1193 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1194 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1195 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1196 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1197 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1198 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1199 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1200 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1201 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1202 return config_term_common(attr, term, err);
1203 default:
1204 if (err) {
1205 parse_events__handle_error(err, term->err_term,
1206 strdup("unknown term"),
1207 strdup("valid terms: call-graph,stack-size\n"));
1208 }
1209 return -EINVAL;
1210 }
1211
1212 return 0;
1213}
1214
1215static int config_attr(struct perf_event_attr *attr,
1216 struct list_head *head,
1217 struct parse_events_error *err,
1218 config_term_func_t config_term)
1219{
1220 struct parse_events_term *term;
1221
1222 list_for_each_entry(term, head, list)
1223 if (config_term(attr, term, err))
1224 return -EINVAL;
1225
1226 return 0;
1227}
1228
1229static int get_config_terms(struct list_head *head_config,
1230 struct list_head *head_terms __maybe_unused)
1231{
1232#define ADD_CONFIG_TERM(__type, __weak) \
1233 struct evsel_config_term *__t; \
1234 \
1235 __t = zalloc(sizeof(*__t)); \
1236 if (!__t) \
1237 return -ENOMEM; \
1238 \
1239 INIT_LIST_HEAD(&__t->list); \
1240 __t->type = EVSEL__CONFIG_TERM_ ## __type; \
1241 __t->weak = __weak; \
1242 list_add_tail(&__t->list, head_terms)
1243
1244#define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \
1245do { \
1246 ADD_CONFIG_TERM(__type, __weak); \
1247 __t->val.__name = __val; \
1248} while (0)
1249
1250#define ADD_CONFIG_TERM_STR(__type, __val, __weak) \
1251do { \
1252 ADD_CONFIG_TERM(__type, __weak); \
1253 __t->val.str = strdup(__val); \
1254 if (!__t->val.str) { \
1255 zfree(&__t); \
1256 return -ENOMEM; \
1257 } \
1258 __t->free_str = true; \
1259} while (0)
1260
1261 struct parse_events_term *term;
1262
1263 list_for_each_entry(term, head_config, list) {
1264 switch (term->type_term) {
1265 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1266 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);
1267 break;
1268 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1269 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);
1270 break;
1271 case PARSE_EVENTS__TERM_TYPE_TIME:
1272 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);
1273 break;
1274 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1275 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);
1276 break;
1277 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1278 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);
1279 break;
1280 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1281 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
1282 term->val.num, term->weak);
1283 break;
1284 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1285 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1286 term->val.num ? 1 : 0, term->weak);
1287 break;
1288 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1289 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1290 term->val.num ? 0 : 1, term->weak);
1291 break;
1292 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1293 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
1294 term->val.num, term->weak);
1295 break;
1296 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1297 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
1298 term->val.num, term->weak);
1299 break;
1300 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1301 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1302 term->val.num ? 1 : 0, term->weak);
1303 break;
1304 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1305 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1306 term->val.num ? 0 : 1, term->weak);
1307 break;
1308 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1309 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);
1310 break;
1311 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1312 ADD_CONFIG_TERM_VAL(PERCORE, percore,
1313 term->val.num ? true : false, term->weak);
1314 break;
1315 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1316 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
1317 term->val.num ? 1 : 0, term->weak);
1318 break;
1319 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1320 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
1321 term->val.num, term->weak);
1322 break;
1323 default:
1324 break;
1325 }
1326 }
1327 return 0;
1328}
1329
1330/*
1331 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for
1332 * each bit of attr->config that the user has changed.
1333 */
1334static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config,
1335 struct list_head *head_terms)
1336{
1337 struct parse_events_term *term;
1338 u64 bits = 0;
1339 int type;
1340
1341 list_for_each_entry(term, head_config, list) {
1342 switch (term->type_term) {
1343 case PARSE_EVENTS__TERM_TYPE_USER:
1344 type = perf_pmu__format_type(&pmu->format, term->config);
1345 if (type != PERF_PMU_FORMAT_VALUE_CONFIG)
1346 continue;
1347 bits |= perf_pmu__format_bits(&pmu->format, term->config);
1348 break;
1349 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1350 bits = ~(u64)0;
1351 break;
1352 default:
1353 break;
1354 }
1355 }
1356
1357 if (bits)
1358 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);
1359
1360#undef ADD_CONFIG_TERM
1361 return 0;
1362}
1363
1364int parse_events_add_tracepoint(struct list_head *list, int *idx,
1365 const char *sys, const char *event,
1366 struct parse_events_error *err,
1367 struct list_head *head_config)
1368{
1369 if (head_config) {
1370 struct perf_event_attr attr;
1371
1372 if (config_attr(&attr, head_config, err,
1373 config_term_tracepoint))
1374 return -EINVAL;
1375 }
1376
1377 if (strpbrk(sys, "*?"))
1378 return add_tracepoint_multi_sys(list, idx, sys, event,
1379 err, head_config);
1380 else
1381 return add_tracepoint_event(list, idx, sys, event,
1382 err, head_config);
1383}
1384
1385int parse_events_add_numeric(struct parse_events_state *parse_state,
1386 struct list_head *list,
1387 u32 type, u64 config,
1388 struct list_head *head_config)
1389{
1390 struct perf_event_attr attr;
1391 LIST_HEAD(config_terms);
1392
1393 memset(&attr, 0, sizeof(attr));
1394 attr.type = type;
1395 attr.config = config;
1396
1397 if (head_config) {
1398 if (config_attr(&attr, head_config, parse_state->error,
1399 config_term_common))
1400 return -EINVAL;
1401
1402 if (get_config_terms(head_config, &config_terms))
1403 return -ENOMEM;
1404 }
1405
1406 return add_event(list, &parse_state->idx, &attr,
1407 get_config_name(head_config), &config_terms);
1408}
1409
1410int parse_events_add_tool(struct parse_events_state *parse_state,
1411 struct list_head *list,
1412 enum perf_tool_event tool_event)
1413{
1414 return add_event_tool(list, &parse_state->idx, tool_event);
1415}
1416
1417static bool config_term_percore(struct list_head *config_terms)
1418{
1419 struct evsel_config_term *term;
1420
1421 list_for_each_entry(term, config_terms, list) {
1422 if (term->type == EVSEL__CONFIG_TERM_PERCORE)
1423 return term->val.percore;
1424 }
1425
1426 return false;
1427}
1428
1429int parse_events_add_pmu(struct parse_events_state *parse_state,
1430 struct list_head *list, char *name,
1431 struct list_head *head_config,
1432 bool auto_merge_stats,
1433 bool use_alias)
1434{
1435 struct perf_event_attr attr;
1436 struct perf_pmu_info info;
1437 struct perf_pmu *pmu;
1438 struct evsel *evsel;
1439 struct parse_events_error *err = parse_state->error;
1440 bool use_uncore_alias;
1441 LIST_HEAD(config_terms);
1442
1443 if (verbose > 1) {
1444 fprintf(stderr, "Attempting to add event pmu '%s' with '",
1445 name);
1446 if (head_config) {
1447 struct parse_events_term *term;
1448
1449 list_for_each_entry(term, head_config, list) {
1450 fprintf(stderr, "%s,", term->config);
1451 }
1452 }
1453 fprintf(stderr, "' that may result in non-fatal errors\n");
1454 }
1455
1456 pmu = parse_state->fake_pmu ?: perf_pmu__find(name);
1457 if (!pmu) {
1458 char *err_str;
1459
1460 if (asprintf(&err_str,
1461 "Cannot find PMU `%s'. Missing kernel support?",
1462 name) >= 0)
1463 parse_events__handle_error(err, 0, err_str, NULL);
1464 return -EINVAL;
1465 }
1466
1467 if (pmu->default_config) {
1468 memcpy(&attr, pmu->default_config,
1469 sizeof(struct perf_event_attr));
1470 } else {
1471 memset(&attr, 0, sizeof(attr));
1472 }
1473
1474 use_uncore_alias = (pmu->is_uncore && use_alias);
1475
1476 if (!head_config) {
1477 attr.type = pmu->type;
1478 evsel = __add_event(list, &parse_state->idx, &attr, true, NULL,
1479 pmu, NULL, auto_merge_stats, NULL);
1480 if (evsel) {
1481 evsel->pmu_name = name ? strdup(name) : NULL;
1482 evsel->use_uncore_alias = use_uncore_alias;
1483 return 0;
1484 } else {
1485 return -ENOMEM;
1486 }
1487 }
1488
1489 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info))
1490 return -EINVAL;
1491
1492 if (verbose > 1) {
1493 fprintf(stderr, "After aliases, add event pmu '%s' with '",
1494 name);
1495 if (head_config) {
1496 struct parse_events_term *term;
1497
1498 list_for_each_entry(term, head_config, list) {
1499 fprintf(stderr, "%s,", term->config);
1500 }
1501 }
1502 fprintf(stderr, "' that may result in non-fatal errors\n");
1503 }
1504
1505 /*
1506 * Configure hardcoded terms first, no need to check
1507 * return value when called with fail == 0 ;)
1508 */
1509 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu))
1510 return -EINVAL;
1511
1512 if (get_config_terms(head_config, &config_terms))
1513 return -ENOMEM;
1514
1515 /*
1516 * When using default config, record which bits of attr->config were
1517 * changed by the user.
1518 */
1519 if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms))
1520 return -ENOMEM;
1521
1522 if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) {
1523 struct evsel_config_term *pos, *tmp;
1524
1525 list_for_each_entry_safe(pos, tmp, &config_terms, list) {
1526 list_del_init(&pos->list);
1527 if (pos->free_str)
1528 zfree(&pos->val.str);
1529 free(pos);
1530 }
1531 return -EINVAL;
1532 }
1533
1534 evsel = __add_event(list, &parse_state->idx, &attr, true,
1535 get_config_name(head_config), pmu,
1536 &config_terms, auto_merge_stats, NULL);
1537 if (!evsel)
1538 return -ENOMEM;
1539
1540 evsel->pmu_name = name ? strdup(name) : NULL;
1541 evsel->use_uncore_alias = use_uncore_alias;
1542 evsel->percore = config_term_percore(&evsel->config_terms);
1543
1544 if (parse_state->fake_pmu)
1545 return 0;
1546
1547 evsel->unit = info.unit;
1548 evsel->scale = info.scale;
1549 evsel->per_pkg = info.per_pkg;
1550 evsel->snapshot = info.snapshot;
1551 evsel->metric_expr = info.metric_expr;
1552 evsel->metric_name = info.metric_name;
1553 return 0;
1554}
1555
1556int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1557 char *str, struct list_head **listp)
1558{
1559 struct parse_events_term *term;
1560 struct list_head *list;
1561 struct perf_pmu *pmu = NULL;
1562 int ok = 0;
1563
1564 *listp = NULL;
1565 /* Add it for all PMUs that support the alias */
1566 list = malloc(sizeof(struct list_head));
1567 if (!list)
1568 return -1;
1569 INIT_LIST_HEAD(list);
1570 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1571 struct perf_pmu_alias *alias;
1572
1573 list_for_each_entry(alias, &pmu->aliases, list) {
1574 if (!strcasecmp(alias->name, str)) {
1575 struct list_head *head;
1576 char *config;
1577
1578 head = malloc(sizeof(struct list_head));
1579 if (!head)
1580 return -1;
1581 INIT_LIST_HEAD(head);
1582 config = strdup(str);
1583 if (!config)
1584 return -1;
1585 if (parse_events_term__num(&term,
1586 PARSE_EVENTS__TERM_TYPE_USER,
1587 config, 1, false, &config,
1588 NULL) < 0) {
1589 free(list);
1590 free(config);
1591 return -1;
1592 }
1593 list_add_tail(&term->list, head);
1594
1595 if (!parse_events_add_pmu(parse_state, list,
1596 pmu->name, head,
1597 true, true)) {
1598 pr_debug("%s -> %s/%s/\n", str,
1599 pmu->name, alias->str);
1600 ok++;
1601 }
1602
1603 parse_events_terms__delete(head);
1604 }
1605 }
1606 }
1607 if (!ok) {
1608 free(list);
1609 return -1;
1610 }
1611 *listp = list;
1612 return 0;
1613}
1614
1615int parse_events__modifier_group(struct list_head *list,
1616 char *event_mod)
1617{
1618 return parse_events__modifier_event(list, event_mod, true);
1619}
1620
1621/*
1622 * Check if the two uncore PMUs are from the same uncore block
1623 * The format of the uncore PMU name is uncore_#blockname_#pmuidx
1624 */
1625static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b)
1626{
1627 char *end_a, *end_b;
1628
1629 end_a = strrchr(pmu_name_a, '_');
1630 end_b = strrchr(pmu_name_b, '_');
1631
1632 if (!end_a || !end_b)
1633 return false;
1634
1635 if ((end_a - pmu_name_a) != (end_b - pmu_name_b))
1636 return false;
1637
1638 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0);
1639}
1640
1641static int
1642parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list,
1643 struct parse_events_state *parse_state)
1644{
1645 struct evsel *evsel, *leader;
1646 uintptr_t *leaders;
1647 bool is_leader = true;
1648 int i, nr_pmu = 0, total_members, ret = 0;
1649
1650 leader = list_first_entry(list, struct evsel, core.node);
1651 evsel = list_last_entry(list, struct evsel, core.node);
1652 total_members = evsel->idx - leader->idx + 1;
1653
1654 leaders = calloc(total_members, sizeof(uintptr_t));
1655 if (WARN_ON(!leaders))
1656 return 0;
1657
1658 /*
1659 * Going through the whole group and doing sanity check.
1660 * All members must use alias, and be from the same uncore block.
1661 * Also, storing the leader events in an array.
1662 */
1663 __evlist__for_each_entry(list, evsel) {
1664
1665 /* Only split the uncore group which members use alias */
1666 if (!evsel->use_uncore_alias)
1667 goto out;
1668
1669 /* The events must be from the same uncore block */
1670 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name))
1671 goto out;
1672
1673 if (!is_leader)
1674 continue;
1675 /*
1676 * If the event's PMU name starts to repeat, it must be a new
1677 * event. That can be used to distinguish the leader from
1678 * other members, even they have the same event name.
1679 */
1680 if ((leader != evsel) &&
1681 !strcmp(leader->pmu_name, evsel->pmu_name)) {
1682 is_leader = false;
1683 continue;
1684 }
1685
1686 /* Store the leader event for each PMU */
1687 leaders[nr_pmu++] = (uintptr_t) evsel;
1688 }
1689
1690 /* only one event alias */
1691 if (nr_pmu == total_members) {
1692 parse_state->nr_groups--;
1693 goto handled;
1694 }
1695
1696 /*
1697 * An uncore event alias is a joint name which means the same event
1698 * runs on all PMUs of a block.
1699 * Perf doesn't support mixed events from different PMUs in the same
1700 * group. The big group has to be split into multiple small groups
1701 * which only include the events from the same PMU.
1702 *
1703 * Here the uncore event aliases must be from the same uncore block.
1704 * The number of PMUs must be same for each alias. The number of new
1705 * small groups equals to the number of PMUs.
1706 * Setting the leader event for corresponding members in each group.
1707 */
1708 i = 0;
1709 __evlist__for_each_entry(list, evsel) {
1710 if (i >= nr_pmu)
1711 i = 0;
1712 evsel->leader = (struct evsel *) leaders[i++];
1713 }
1714
1715 /* The number of members and group name are same for each group */
1716 for (i = 0; i < nr_pmu; i++) {
1717 evsel = (struct evsel *) leaders[i];
1718 evsel->core.nr_members = total_members / nr_pmu;
1719 evsel->group_name = name ? strdup(name) : NULL;
1720 }
1721
1722 /* Take the new small groups into account */
1723 parse_state->nr_groups += nr_pmu - 1;
1724
1725handled:
1726 ret = 1;
1727out:
1728 free(leaders);
1729 return ret;
1730}
1731
1732void parse_events__set_leader(char *name, struct list_head *list,
1733 struct parse_events_state *parse_state)
1734{
1735 struct evsel *leader;
1736
1737 if (list_empty(list)) {
1738 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1739 return;
1740 }
1741
1742 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state))
1743 return;
1744
1745 __perf_evlist__set_leader(list);
1746 leader = list_entry(list->next, struct evsel, core.node);
1747 leader->group_name = name ? strdup(name) : NULL;
1748}
1749
1750/* list_event is assumed to point to malloc'ed memory */
1751void parse_events_update_lists(struct list_head *list_event,
1752 struct list_head *list_all)
1753{
1754 /*
1755 * Called for single event definition. Update the
1756 * 'all event' list, and reinit the 'single event'
1757 * list, for next event definition.
1758 */
1759 list_splice_tail(list_event, list_all);
1760 free(list_event);
1761}
1762
1763struct event_modifier {
1764 int eu;
1765 int ek;
1766 int eh;
1767 int eH;
1768 int eG;
1769 int eI;
1770 int precise;
1771 int precise_max;
1772 int exclude_GH;
1773 int sample_read;
1774 int pinned;
1775 int weak;
1776};
1777
1778static int get_event_modifier(struct event_modifier *mod, char *str,
1779 struct evsel *evsel)
1780{
1781 int eu = evsel ? evsel->core.attr.exclude_user : 0;
1782 int ek = evsel ? evsel->core.attr.exclude_kernel : 0;
1783 int eh = evsel ? evsel->core.attr.exclude_hv : 0;
1784 int eH = evsel ? evsel->core.attr.exclude_host : 0;
1785 int eG = evsel ? evsel->core.attr.exclude_guest : 0;
1786 int eI = evsel ? evsel->core.attr.exclude_idle : 0;
1787 int precise = evsel ? evsel->core.attr.precise_ip : 0;
1788 int precise_max = 0;
1789 int sample_read = 0;
1790 int pinned = evsel ? evsel->core.attr.pinned : 0;
1791
1792 int exclude = eu | ek | eh;
1793 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1794 int weak = 0;
1795
1796 memset(mod, 0, sizeof(*mod));
1797
1798 while (*str) {
1799 if (*str == 'u') {
1800 if (!exclude)
1801 exclude = eu = ek = eh = 1;
1802 if (!exclude_GH && !perf_guest)
1803 eG = 1;
1804 eu = 0;
1805 } else if (*str == 'k') {
1806 if (!exclude)
1807 exclude = eu = ek = eh = 1;
1808 ek = 0;
1809 } else if (*str == 'h') {
1810 if (!exclude)
1811 exclude = eu = ek = eh = 1;
1812 eh = 0;
1813 } else if (*str == 'G') {
1814 if (!exclude_GH)
1815 exclude_GH = eG = eH = 1;
1816 eG = 0;
1817 } else if (*str == 'H') {
1818 if (!exclude_GH)
1819 exclude_GH = eG = eH = 1;
1820 eH = 0;
1821 } else if (*str == 'I') {
1822 eI = 1;
1823 } else if (*str == 'p') {
1824 precise++;
1825 /* use of precise requires exclude_guest */
1826 if (!exclude_GH)
1827 eG = 1;
1828 } else if (*str == 'P') {
1829 precise_max = 1;
1830 } else if (*str == 'S') {
1831 sample_read = 1;
1832 } else if (*str == 'D') {
1833 pinned = 1;
1834 } else if (*str == 'W') {
1835 weak = 1;
1836 } else
1837 break;
1838
1839 ++str;
1840 }
1841
1842 /*
1843 * precise ip:
1844 *
1845 * 0 - SAMPLE_IP can have arbitrary skid
1846 * 1 - SAMPLE_IP must have constant skid
1847 * 2 - SAMPLE_IP requested to have 0 skid
1848 * 3 - SAMPLE_IP must have 0 skid
1849 *
1850 * See also PERF_RECORD_MISC_EXACT_IP
1851 */
1852 if (precise > 3)
1853 return -EINVAL;
1854
1855 mod->eu = eu;
1856 mod->ek = ek;
1857 mod->eh = eh;
1858 mod->eH = eH;
1859 mod->eG = eG;
1860 mod->eI = eI;
1861 mod->precise = precise;
1862 mod->precise_max = precise_max;
1863 mod->exclude_GH = exclude_GH;
1864 mod->sample_read = sample_read;
1865 mod->pinned = pinned;
1866 mod->weak = weak;
1867
1868 return 0;
1869}
1870
1871/*
1872 * Basic modifier sanity check to validate it contains only one
1873 * instance of any modifier (apart from 'p') present.
1874 */
1875static int check_modifier(char *str)
1876{
1877 char *p = str;
1878
1879 /* The sizeof includes 0 byte as well. */
1880 if (strlen(str) > (sizeof("ukhGHpppPSDIW") - 1))
1881 return -1;
1882
1883 while (*p) {
1884 if (*p != 'p' && strchr(p + 1, *p))
1885 return -1;
1886 p++;
1887 }
1888
1889 return 0;
1890}
1891
1892int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1893{
1894 struct evsel *evsel;
1895 struct event_modifier mod;
1896
1897 if (str == NULL)
1898 return 0;
1899
1900 if (check_modifier(str))
1901 return -EINVAL;
1902
1903 if (!add && get_event_modifier(&mod, str, NULL))
1904 return -EINVAL;
1905
1906 __evlist__for_each_entry(list, evsel) {
1907 if (add && get_event_modifier(&mod, str, evsel))
1908 return -EINVAL;
1909
1910 evsel->core.attr.exclude_user = mod.eu;
1911 evsel->core.attr.exclude_kernel = mod.ek;
1912 evsel->core.attr.exclude_hv = mod.eh;
1913 evsel->core.attr.precise_ip = mod.precise;
1914 evsel->core.attr.exclude_host = mod.eH;
1915 evsel->core.attr.exclude_guest = mod.eG;
1916 evsel->core.attr.exclude_idle = mod.eI;
1917 evsel->exclude_GH = mod.exclude_GH;
1918 evsel->sample_read = mod.sample_read;
1919 evsel->precise_max = mod.precise_max;
1920 evsel->weak_group = mod.weak;
1921
1922 if (evsel__is_group_leader(evsel))
1923 evsel->core.attr.pinned = mod.pinned;
1924 }
1925
1926 return 0;
1927}
1928
1929int parse_events_name(struct list_head *list, char *name)
1930{
1931 struct evsel *evsel;
1932
1933 __evlist__for_each_entry(list, evsel) {
1934 if (!evsel->name)
1935 evsel->name = strdup(name);
1936 }
1937
1938 return 0;
1939}
1940
1941static int
1942comp_pmu(const void *p1, const void *p2)
1943{
1944 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1945 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1946
1947 return strcasecmp(pmu1->symbol, pmu2->symbol);
1948}
1949
1950static void perf_pmu__parse_cleanup(void)
1951{
1952 if (perf_pmu_events_list_num > 0) {
1953 struct perf_pmu_event_symbol *p;
1954 int i;
1955
1956 for (i = 0; i < perf_pmu_events_list_num; i++) {
1957 p = perf_pmu_events_list + i;
1958 zfree(&p->symbol);
1959 }
1960 zfree(&perf_pmu_events_list);
1961 perf_pmu_events_list_num = 0;
1962 }
1963}
1964
1965#define SET_SYMBOL(str, stype) \
1966do { \
1967 p->symbol = str; \
1968 if (!p->symbol) \
1969 goto err; \
1970 p->type = stype; \
1971} while (0)
1972
1973/*
1974 * Read the pmu events list from sysfs
1975 * Save it into perf_pmu_events_list
1976 */
1977static void perf_pmu__parse_init(void)
1978{
1979
1980 struct perf_pmu *pmu = NULL;
1981 struct perf_pmu_alias *alias;
1982 int len = 0;
1983
1984 pmu = NULL;
1985 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1986 list_for_each_entry(alias, &pmu->aliases, list) {
1987 if (strchr(alias->name, '-'))
1988 len++;
1989 len++;
1990 }
1991 }
1992
1993 if (len == 0) {
1994 perf_pmu_events_list_num = -1;
1995 return;
1996 }
1997 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1998 if (!perf_pmu_events_list)
1999 return;
2000 perf_pmu_events_list_num = len;
2001
2002 len = 0;
2003 pmu = NULL;
2004 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
2005 list_for_each_entry(alias, &pmu->aliases, list) {
2006 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
2007 char *tmp = strchr(alias->name, '-');
2008
2009 if (tmp != NULL) {
2010 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
2011 PMU_EVENT_SYMBOL_PREFIX);
2012 p++;
2013 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
2014 len += 2;
2015 } else {
2016 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
2017 len++;
2018 }
2019 }
2020 }
2021 qsort(perf_pmu_events_list, len,
2022 sizeof(struct perf_pmu_event_symbol), comp_pmu);
2023
2024 return;
2025err:
2026 perf_pmu__parse_cleanup();
2027}
2028
2029/*
2030 * This function injects special term in
2031 * perf_pmu_events_list so the test code
2032 * can check on this functionality.
2033 */
2034int perf_pmu__test_parse_init(void)
2035{
2036 struct perf_pmu_event_symbol *list;
2037
2038 list = malloc(sizeof(*list) * 1);
2039 if (!list)
2040 return -ENOMEM;
2041
2042 list->type = PMU_EVENT_SYMBOL;
2043 list->symbol = strdup("read");
2044
2045 if (!list->symbol) {
2046 free(list);
2047 return -ENOMEM;
2048 }
2049
2050 perf_pmu_events_list = list;
2051 perf_pmu_events_list_num = 1;
2052 return 0;
2053}
2054
2055enum perf_pmu_event_symbol_type
2056perf_pmu__parse_check(const char *name)
2057{
2058 struct perf_pmu_event_symbol p, *r;
2059
2060 /* scan kernel pmu events from sysfs if needed */
2061 if (perf_pmu_events_list_num == 0)
2062 perf_pmu__parse_init();
2063 /*
2064 * name "cpu" could be prefix of cpu-cycles or cpu// events.
2065 * cpu-cycles has been handled by hardcode.
2066 * So it must be cpu// events, not kernel pmu event.
2067 */
2068 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
2069 return PMU_EVENT_SYMBOL_ERR;
2070
2071 p.symbol = strdup(name);
2072 r = bsearch(&p, perf_pmu_events_list,
2073 (size_t) perf_pmu_events_list_num,
2074 sizeof(struct perf_pmu_event_symbol), comp_pmu);
2075 zfree(&p.symbol);
2076 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
2077}
2078
2079static int parse_events__scanner(const char *str,
2080 struct parse_events_state *parse_state)
2081{
2082 YY_BUFFER_STATE buffer;
2083 void *scanner;
2084 int ret;
2085
2086 ret = parse_events_lex_init_extra(parse_state, &scanner);
2087 if (ret)
2088 return ret;
2089
2090 buffer = parse_events__scan_string(str, scanner);
2091
2092#ifdef PARSER_DEBUG
2093 parse_events_debug = 1;
2094 parse_events_set_debug(1, scanner);
2095#endif
2096 ret = parse_events_parse(parse_state, scanner);
2097
2098 parse_events__flush_buffer(buffer, scanner);
2099 parse_events__delete_buffer(buffer, scanner);
2100 parse_events_lex_destroy(scanner);
2101 return ret;
2102}
2103
2104/*
2105 * parse event config string, return a list of event terms.
2106 */
2107int parse_events_terms(struct list_head *terms, const char *str)
2108{
2109 struct parse_events_state parse_state = {
2110 .terms = NULL,
2111 .stoken = PE_START_TERMS,
2112 };
2113 int ret;
2114
2115 ret = parse_events__scanner(str, &parse_state);
2116 perf_pmu__parse_cleanup();
2117
2118 if (!ret) {
2119 list_splice(parse_state.terms, terms);
2120 zfree(&parse_state.terms);
2121 return 0;
2122 }
2123
2124 parse_events_terms__delete(parse_state.terms);
2125 return ret;
2126}
2127
2128int __parse_events(struct evlist *evlist, const char *str,
2129 struct parse_events_error *err, struct perf_pmu *fake_pmu)
2130{
2131 struct parse_events_state parse_state = {
2132 .list = LIST_HEAD_INIT(parse_state.list),
2133 .idx = evlist->core.nr_entries,
2134 .error = err,
2135 .evlist = evlist,
2136 .stoken = PE_START_EVENTS,
2137 .fake_pmu = fake_pmu,
2138 };
2139 int ret;
2140
2141 ret = parse_events__scanner(str, &parse_state);
2142 perf_pmu__parse_cleanup();
2143
2144 if (!ret && list_empty(&parse_state.list)) {
2145 WARN_ONCE(true, "WARNING: event parser found nothing\n");
2146 return -1;
2147 }
2148
2149 /*
2150 * Add list to the evlist even with errors to allow callers to clean up.
2151 */
2152 perf_evlist__splice_list_tail(evlist, &parse_state.list);
2153
2154 if (!ret) {
2155 struct evsel *last;
2156
2157 evlist->nr_groups += parse_state.nr_groups;
2158 last = evlist__last(evlist);
2159 last->cmdline_group_boundary = true;
2160
2161 return 0;
2162 }
2163
2164 /*
2165 * There are 2 users - builtin-record and builtin-test objects.
2166 * Both call evlist__delete in case of error, so we dont
2167 * need to bother.
2168 */
2169 return ret;
2170}
2171
2172#define MAX_WIDTH 1000
2173static int get_term_width(void)
2174{
2175 struct winsize ws;
2176
2177 get_term_dimensions(&ws);
2178 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
2179}
2180
2181static void __parse_events_print_error(int err_idx, const char *err_str,
2182 const char *err_help, const char *event)
2183{
2184 const char *str = "invalid or unsupported event: ";
2185 char _buf[MAX_WIDTH];
2186 char *buf = (char *) event;
2187 int idx = 0;
2188 if (err_str) {
2189 /* -2 for extra '' in the final fprintf */
2190 int width = get_term_width() - 2;
2191 int len_event = strlen(event);
2192 int len_str, max_len, cut = 0;
2193
2194 /*
2195 * Maximum error index indent, we will cut
2196 * the event string if it's bigger.
2197 */
2198 int max_err_idx = 13;
2199
2200 /*
2201 * Let's be specific with the message when
2202 * we have the precise error.
2203 */
2204 str = "event syntax error: ";
2205 len_str = strlen(str);
2206 max_len = width - len_str;
2207
2208 buf = _buf;
2209
2210 /* We're cutting from the beginning. */
2211 if (err_idx > max_err_idx)
2212 cut = err_idx - max_err_idx;
2213
2214 strncpy(buf, event + cut, max_len);
2215
2216 /* Mark cut parts with '..' on both sides. */
2217 if (cut)
2218 buf[0] = buf[1] = '.';
2219
2220 if ((len_event - cut) > max_len) {
2221 buf[max_len - 1] = buf[max_len - 2] = '.';
2222 buf[max_len] = 0;
2223 }
2224
2225 idx = len_str + err_idx - cut;
2226 }
2227
2228 fprintf(stderr, "%s'%s'\n", str, buf);
2229 if (idx) {
2230 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);
2231 if (err_help)
2232 fprintf(stderr, "\n%s\n", err_help);
2233 }
2234}
2235
2236void parse_events_print_error(struct parse_events_error *err,
2237 const char *event)
2238{
2239 if (!err->num_errors)
2240 return;
2241
2242 __parse_events_print_error(err->idx, err->str, err->help, event);
2243 zfree(&err->str);
2244 zfree(&err->help);
2245
2246 if (err->num_errors > 1) {
2247 fputs("\nInitial error:\n", stderr);
2248 __parse_events_print_error(err->first_idx, err->first_str,
2249 err->first_help, event);
2250 zfree(&err->first_str);
2251 zfree(&err->first_help);
2252 }
2253}
2254
2255#undef MAX_WIDTH
2256
2257int parse_events_option(const struct option *opt, const char *str,
2258 int unset __maybe_unused)
2259{
2260 struct evlist *evlist = *(struct evlist **)opt->value;
2261 struct parse_events_error err;
2262 int ret;
2263
2264 bzero(&err, sizeof(err));
2265 ret = parse_events(evlist, str, &err);
2266
2267 if (ret) {
2268 parse_events_print_error(&err, str);
2269 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2270 }
2271
2272 return ret;
2273}
2274
2275int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)
2276{
2277 struct evlist **evlistp = opt->value;
2278 int ret;
2279
2280 if (*evlistp == NULL) {
2281 *evlistp = evlist__new();
2282
2283 if (*evlistp == NULL) {
2284 fprintf(stderr, "Not enough memory to create evlist\n");
2285 return -1;
2286 }
2287 }
2288
2289 ret = parse_events_option(opt, str, unset);
2290 if (ret) {
2291 evlist__delete(*evlistp);
2292 *evlistp = NULL;
2293 }
2294
2295 return ret;
2296}
2297
2298static int
2299foreach_evsel_in_last_glob(struct evlist *evlist,
2300 int (*func)(struct evsel *evsel,
2301 const void *arg),
2302 const void *arg)
2303{
2304 struct evsel *last = NULL;
2305 int err;
2306
2307 /*
2308 * Don't return when list_empty, give func a chance to report
2309 * error when it found last == NULL.
2310 *
2311 * So no need to WARN here, let *func do this.
2312 */
2313 if (evlist->core.nr_entries > 0)
2314 last = evlist__last(evlist);
2315
2316 do {
2317 err = (*func)(last, arg);
2318 if (err)
2319 return -1;
2320 if (!last)
2321 return 0;
2322
2323 if (last->core.node.prev == &evlist->core.entries)
2324 return 0;
2325 last = list_entry(last->core.node.prev, struct evsel, core.node);
2326 } while (!last->cmdline_group_boundary);
2327
2328 return 0;
2329}
2330
2331static int set_filter(struct evsel *evsel, const void *arg)
2332{
2333 const char *str = arg;
2334 bool found = false;
2335 int nr_addr_filters = 0;
2336 struct perf_pmu *pmu = NULL;
2337
2338 if (evsel == NULL) {
2339 fprintf(stderr,
2340 "--filter option should follow a -e tracepoint or HW tracer option\n");
2341 return -1;
2342 }
2343
2344 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2345 if (evsel__append_tp_filter(evsel, str) < 0) {
2346 fprintf(stderr,
2347 "not enough memory to hold filter string\n");
2348 return -1;
2349 }
2350
2351 return 0;
2352 }
2353
2354 while ((pmu = perf_pmu__scan(pmu)) != NULL)
2355 if (pmu->type == evsel->core.attr.type) {
2356 found = true;
2357 break;
2358 }
2359
2360 if (found)
2361 perf_pmu__scan_file(pmu, "nr_addr_filters",
2362 "%d", &nr_addr_filters);
2363
2364 if (!nr_addr_filters) {
2365 fprintf(stderr,
2366 "This CPU does not support address filtering\n");
2367 return -1;
2368 }
2369
2370 if (evsel__append_addr_filter(evsel, str) < 0) {
2371 fprintf(stderr,
2372 "not enough memory to hold filter string\n");
2373 return -1;
2374 }
2375
2376 return 0;
2377}
2378
2379int parse_filter(const struct option *opt, const char *str,
2380 int unset __maybe_unused)
2381{
2382 struct evlist *evlist = *(struct evlist **)opt->value;
2383
2384 return foreach_evsel_in_last_glob(evlist, set_filter,
2385 (const void *)str);
2386}
2387
2388static int add_exclude_perf_filter(struct evsel *evsel,
2389 const void *arg __maybe_unused)
2390{
2391 char new_filter[64];
2392
2393 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2394 fprintf(stderr,
2395 "--exclude-perf option should follow a -e tracepoint option\n");
2396 return -1;
2397 }
2398
2399 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2400
2401 if (evsel__append_tp_filter(evsel, new_filter) < 0) {
2402 fprintf(stderr,
2403 "not enough memory to hold filter string\n");
2404 return -1;
2405 }
2406
2407 return 0;
2408}
2409
2410int exclude_perf(const struct option *opt,
2411 const char *arg __maybe_unused,
2412 int unset __maybe_unused)
2413{
2414 struct evlist *evlist = *(struct evlist **)opt->value;
2415
2416 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2417 NULL);
2418}
2419
2420static const char * const event_type_descriptors[] = {
2421 "Hardware event",
2422 "Software event",
2423 "Tracepoint event",
2424 "Hardware cache event",
2425 "Raw hardware event descriptor",
2426 "Hardware breakpoint",
2427};
2428
2429static int cmp_string(const void *a, const void *b)
2430{
2431 const char * const *as = a;
2432 const char * const *bs = b;
2433
2434 return strcmp(*as, *bs);
2435}
2436
2437/*
2438 * Print the events from <debugfs_mount_point>/tracing/events
2439 */
2440
2441void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
2442 bool name_only)
2443{
2444 DIR *sys_dir, *evt_dir;
2445 struct dirent *sys_dirent, *evt_dirent;
2446 char evt_path[MAXPATHLEN];
2447 char *dir_path;
2448 char **evt_list = NULL;
2449 unsigned int evt_i = 0, evt_num = 0;
2450 bool evt_num_known = false;
2451
2452restart:
2453 sys_dir = tracing_events__opendir();
2454 if (!sys_dir)
2455 return;
2456
2457 if (evt_num_known) {
2458 evt_list = zalloc(sizeof(char *) * evt_num);
2459 if (!evt_list)
2460 goto out_close_sys_dir;
2461 }
2462
2463 for_each_subsystem(sys_dir, sys_dirent) {
2464 if (subsys_glob != NULL &&
2465 !strglobmatch(sys_dirent->d_name, subsys_glob))
2466 continue;
2467
2468 dir_path = get_events_file(sys_dirent->d_name);
2469 if (!dir_path)
2470 continue;
2471 evt_dir = opendir(dir_path);
2472 if (!evt_dir)
2473 goto next;
2474
2475 for_each_event(dir_path, evt_dir, evt_dirent) {
2476 if (event_glob != NULL &&
2477 !strglobmatch(evt_dirent->d_name, event_glob))
2478 continue;
2479
2480 if (!evt_num_known) {
2481 evt_num++;
2482 continue;
2483 }
2484
2485 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2486 sys_dirent->d_name, evt_dirent->d_name);
2487
2488 evt_list[evt_i] = strdup(evt_path);
2489 if (evt_list[evt_i] == NULL) {
2490 put_events_file(dir_path);
2491 goto out_close_evt_dir;
2492 }
2493 evt_i++;
2494 }
2495 closedir(evt_dir);
2496next:
2497 put_events_file(dir_path);
2498 }
2499 closedir(sys_dir);
2500
2501 if (!evt_num_known) {
2502 evt_num_known = true;
2503 goto restart;
2504 }
2505 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2506 evt_i = 0;
2507 while (evt_i < evt_num) {
2508 if (name_only) {
2509 printf("%s ", evt_list[evt_i++]);
2510 continue;
2511 }
2512 printf(" %-50s [%s]\n", evt_list[evt_i++],
2513 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2514 }
2515 if (evt_num && pager_in_use())
2516 printf("\n");
2517
2518out_free:
2519 evt_num = evt_i;
2520 for (evt_i = 0; evt_i < evt_num; evt_i++)
2521 zfree(&evt_list[evt_i]);
2522 zfree(&evt_list);
2523 return;
2524
2525out_close_evt_dir:
2526 closedir(evt_dir);
2527out_close_sys_dir:
2528 closedir(sys_dir);
2529
2530 printf("FATAL: not enough memory to print %s\n",
2531 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2532 if (evt_list)
2533 goto out_free;
2534}
2535
2536/*
2537 * Check whether event is in <debugfs_mount_point>/tracing/events
2538 */
2539
2540int is_valid_tracepoint(const char *event_string)
2541{
2542 DIR *sys_dir, *evt_dir;
2543 struct dirent *sys_dirent, *evt_dirent;
2544 char evt_path[MAXPATHLEN];
2545 char *dir_path;
2546
2547 sys_dir = tracing_events__opendir();
2548 if (!sys_dir)
2549 return 0;
2550
2551 for_each_subsystem(sys_dir, sys_dirent) {
2552 dir_path = get_events_file(sys_dirent->d_name);
2553 if (!dir_path)
2554 continue;
2555 evt_dir = opendir(dir_path);
2556 if (!evt_dir)
2557 goto next;
2558
2559 for_each_event(dir_path, evt_dir, evt_dirent) {
2560 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2561 sys_dirent->d_name, evt_dirent->d_name);
2562 if (!strcmp(evt_path, event_string)) {
2563 closedir(evt_dir);
2564 closedir(sys_dir);
2565 return 1;
2566 }
2567 }
2568 closedir(evt_dir);
2569next:
2570 put_events_file(dir_path);
2571 }
2572 closedir(sys_dir);
2573 return 0;
2574}
2575
2576static bool is_event_supported(u8 type, unsigned config)
2577{
2578 bool ret = true;
2579 int open_return;
2580 struct evsel *evsel;
2581 struct perf_event_attr attr = {
2582 .type = type,
2583 .config = config,
2584 .disabled = 1,
2585 };
2586 struct perf_thread_map *tmap = thread_map__new_by_tid(0);
2587
2588 if (tmap == NULL)
2589 return false;
2590
2591 evsel = evsel__new(&attr);
2592 if (evsel) {
2593 open_return = evsel__open(evsel, NULL, tmap);
2594 ret = open_return >= 0;
2595
2596 if (open_return == -EACCES) {
2597 /*
2598 * This happens if the paranoid value
2599 * /proc/sys/kernel/perf_event_paranoid is set to 2
2600 * Re-run with exclude_kernel set; we don't do that
2601 * by default as some ARM machines do not support it.
2602 *
2603 */
2604 evsel->core.attr.exclude_kernel = 1;
2605 ret = evsel__open(evsel, NULL, tmap) >= 0;
2606 }
2607 evsel__delete(evsel);
2608 }
2609
2610 perf_thread_map__put(tmap);
2611 return ret;
2612}
2613
2614void print_sdt_events(const char *subsys_glob, const char *event_glob,
2615 bool name_only)
2616{
2617 struct probe_cache *pcache;
2618 struct probe_cache_entry *ent;
2619 struct strlist *bidlist, *sdtlist;
2620 struct strlist_config cfg = {.dont_dupstr = true};
2621 struct str_node *nd, *nd2;
2622 char *buf, *path, *ptr = NULL;
2623 bool show_detail = false;
2624 int ret;
2625
2626 sdtlist = strlist__new(NULL, &cfg);
2627 if (!sdtlist) {
2628 pr_debug("Failed to allocate new strlist for SDT\n");
2629 return;
2630 }
2631 bidlist = build_id_cache__list_all(true);
2632 if (!bidlist) {
2633 pr_debug("Failed to get buildids: %d\n", errno);
2634 return;
2635 }
2636 strlist__for_each_entry(nd, bidlist) {
2637 pcache = probe_cache__new(nd->s, NULL);
2638 if (!pcache)
2639 continue;
2640 list_for_each_entry(ent, &pcache->entries, node) {
2641 if (!ent->sdt)
2642 continue;
2643 if (subsys_glob &&
2644 !strglobmatch(ent->pev.group, subsys_glob))
2645 continue;
2646 if (event_glob &&
2647 !strglobmatch(ent->pev.event, event_glob))
2648 continue;
2649 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2650 ent->pev.event, nd->s);
2651 if (ret > 0)
2652 strlist__add(sdtlist, buf);
2653 }
2654 probe_cache__delete(pcache);
2655 }
2656 strlist__delete(bidlist);
2657
2658 strlist__for_each_entry(nd, sdtlist) {
2659 buf = strchr(nd->s, '@');
2660 if (buf)
2661 *(buf++) = '\0';
2662 if (name_only) {
2663 printf("%s ", nd->s);
2664 continue;
2665 }
2666 nd2 = strlist__next(nd);
2667 if (nd2) {
2668 ptr = strchr(nd2->s, '@');
2669 if (ptr)
2670 *ptr = '\0';
2671 if (strcmp(nd->s, nd2->s) == 0)
2672 show_detail = true;
2673 }
2674 if (show_detail) {
2675 path = build_id_cache__origname(buf);
2676 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2677 if (ret > 0) {
2678 printf(" %-50s [%s]\n", buf, "SDT event");
2679 free(buf);
2680 }
2681 free(path);
2682 } else
2683 printf(" %-50s [%s]\n", nd->s, "SDT event");
2684 if (nd2) {
2685 if (strcmp(nd->s, nd2->s) != 0)
2686 show_detail = false;
2687 if (ptr)
2688 *ptr = '@';
2689 }
2690 }
2691 strlist__delete(sdtlist);
2692}
2693
2694int print_hwcache_events(const char *event_glob, bool name_only)
2695{
2696 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2697 char name[64];
2698 char **evt_list = NULL;
2699 bool evt_num_known = false;
2700
2701restart:
2702 if (evt_num_known) {
2703 evt_list = zalloc(sizeof(char *) * evt_num);
2704 if (!evt_list)
2705 goto out_enomem;
2706 }
2707
2708 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2709 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2710 /* skip invalid cache type */
2711 if (!evsel__is_cache_op_valid(type, op))
2712 continue;
2713
2714 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2715 __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name));
2716 if (event_glob != NULL && !strglobmatch(name, event_glob))
2717 continue;
2718
2719 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2720 type | (op << 8) | (i << 16)))
2721 continue;
2722
2723 if (!evt_num_known) {
2724 evt_num++;
2725 continue;
2726 }
2727
2728 evt_list[evt_i] = strdup(name);
2729 if (evt_list[evt_i] == NULL)
2730 goto out_enomem;
2731 evt_i++;
2732 }
2733 }
2734 }
2735
2736 if (!evt_num_known) {
2737 evt_num_known = true;
2738 goto restart;
2739 }
2740 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2741 evt_i = 0;
2742 while (evt_i < evt_num) {
2743 if (name_only) {
2744 printf("%s ", evt_list[evt_i++]);
2745 continue;
2746 }
2747 printf(" %-50s [%s]\n", evt_list[evt_i++],
2748 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2749 }
2750 if (evt_num && pager_in_use())
2751 printf("\n");
2752
2753out_free:
2754 evt_num = evt_i;
2755 for (evt_i = 0; evt_i < evt_num; evt_i++)
2756 zfree(&evt_list[evt_i]);
2757 zfree(&evt_list);
2758 return evt_num;
2759
2760out_enomem:
2761 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2762 if (evt_list)
2763 goto out_free;
2764 return evt_num;
2765}
2766
2767static void print_tool_event(const char *name, const char *event_glob,
2768 bool name_only)
2769{
2770 if (event_glob && !strglobmatch(name, event_glob))
2771 return;
2772 if (name_only)
2773 printf("%s ", name);
2774 else
2775 printf(" %-50s [%s]\n", name, "Tool event");
2776
2777}
2778
2779void print_tool_events(const char *event_glob, bool name_only)
2780{
2781 print_tool_event("duration_time", event_glob, name_only);
2782 if (pager_in_use())
2783 printf("\n");
2784}
2785
2786void print_symbol_events(const char *event_glob, unsigned type,
2787 struct event_symbol *syms, unsigned max,
2788 bool name_only)
2789{
2790 unsigned int i, evt_i = 0, evt_num = 0;
2791 char name[MAX_NAME_LEN];
2792 char **evt_list = NULL;
2793 bool evt_num_known = false;
2794
2795restart:
2796 if (evt_num_known) {
2797 evt_list = zalloc(sizeof(char *) * evt_num);
2798 if (!evt_list)
2799 goto out_enomem;
2800 syms -= max;
2801 }
2802
2803 for (i = 0; i < max; i++, syms++) {
2804
2805 if (event_glob != NULL && syms->symbol != NULL &&
2806 !(strglobmatch(syms->symbol, event_glob) ||
2807 (syms->alias && strglobmatch(syms->alias, event_glob))))
2808 continue;
2809
2810 if (!is_event_supported(type, i))
2811 continue;
2812
2813 if (!evt_num_known) {
2814 evt_num++;
2815 continue;
2816 }
2817
2818 if (!name_only && strlen(syms->alias))
2819 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2820 else
2821 strlcpy(name, syms->symbol, MAX_NAME_LEN);
2822
2823 evt_list[evt_i] = strdup(name);
2824 if (evt_list[evt_i] == NULL)
2825 goto out_enomem;
2826 evt_i++;
2827 }
2828
2829 if (!evt_num_known) {
2830 evt_num_known = true;
2831 goto restart;
2832 }
2833 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2834 evt_i = 0;
2835 while (evt_i < evt_num) {
2836 if (name_only) {
2837 printf("%s ", evt_list[evt_i++]);
2838 continue;
2839 }
2840 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2841 }
2842 if (evt_num && pager_in_use())
2843 printf("\n");
2844
2845out_free:
2846 evt_num = evt_i;
2847 for (evt_i = 0; evt_i < evt_num; evt_i++)
2848 zfree(&evt_list[evt_i]);
2849 zfree(&evt_list);
2850 return;
2851
2852out_enomem:
2853 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2854 if (evt_list)
2855 goto out_free;
2856}
2857
2858/*
2859 * Print the help text for the event symbols:
2860 */
2861void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2862 bool long_desc, bool details_flag, bool deprecated)
2863{
2864 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2865 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2866
2867 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2868 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2869 print_tool_events(event_glob, name_only);
2870
2871 print_hwcache_events(event_glob, name_only);
2872
2873 print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
2874 details_flag, deprecated);
2875
2876 if (event_glob != NULL)
2877 return;
2878
2879 if (!name_only) {
2880 printf(" %-50s [%s]\n",
2881 "rNNN",
2882 event_type_descriptors[PERF_TYPE_RAW]);
2883 printf(" %-50s [%s]\n",
2884 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2885 event_type_descriptors[PERF_TYPE_RAW]);
2886 if (pager_in_use())
2887 printf(" (see 'man perf-list' on how to encode it)\n\n");
2888
2889 printf(" %-50s [%s]\n",
2890 "mem:<addr>[/len][:access]",
2891 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2892 if (pager_in_use())
2893 printf("\n");
2894 }
2895
2896 print_tracepoint_events(NULL, NULL, name_only);
2897
2898 print_sdt_events(NULL, NULL, name_only);
2899
2900 metricgroup__print(true, true, NULL, name_only, details_flag);
2901
2902 print_libpfm_events(name_only, long_desc);
2903}
2904
2905int parse_events__is_hardcoded_term(struct parse_events_term *term)
2906{
2907 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2908}
2909
2910static int new_term(struct parse_events_term **_term,
2911 struct parse_events_term *temp,
2912 char *str, u64 num)
2913{
2914 struct parse_events_term *term;
2915
2916 term = malloc(sizeof(*term));
2917 if (!term)
2918 return -ENOMEM;
2919
2920 *term = *temp;
2921 INIT_LIST_HEAD(&term->list);
2922 term->weak = false;
2923
2924 switch (term->type_val) {
2925 case PARSE_EVENTS__TERM_TYPE_NUM:
2926 term->val.num = num;
2927 break;
2928 case PARSE_EVENTS__TERM_TYPE_STR:
2929 term->val.str = str;
2930 break;
2931 default:
2932 free(term);
2933 return -EINVAL;
2934 }
2935
2936 *_term = term;
2937 return 0;
2938}
2939
2940int parse_events_term__num(struct parse_events_term **term,
2941 int type_term, char *config, u64 num,
2942 bool no_value,
2943 void *loc_term_, void *loc_val_)
2944{
2945 YYLTYPE *loc_term = loc_term_;
2946 YYLTYPE *loc_val = loc_val_;
2947
2948 struct parse_events_term temp = {
2949 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2950 .type_term = type_term,
2951 .config = config,
2952 .no_value = no_value,
2953 .err_term = loc_term ? loc_term->first_column : 0,
2954 .err_val = loc_val ? loc_val->first_column : 0,
2955 };
2956
2957 return new_term(term, &temp, NULL, num);
2958}
2959
2960int parse_events_term__str(struct parse_events_term **term,
2961 int type_term, char *config, char *str,
2962 void *loc_term_, void *loc_val_)
2963{
2964 YYLTYPE *loc_term = loc_term_;
2965 YYLTYPE *loc_val = loc_val_;
2966
2967 struct parse_events_term temp = {
2968 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2969 .type_term = type_term,
2970 .config = config,
2971 .err_term = loc_term ? loc_term->first_column : 0,
2972 .err_val = loc_val ? loc_val->first_column : 0,
2973 };
2974
2975 return new_term(term, &temp, str, 0);
2976}
2977
2978int parse_events_term__sym_hw(struct parse_events_term **term,
2979 char *config, unsigned idx)
2980{
2981 struct event_symbol *sym;
2982 char *str;
2983 struct parse_events_term temp = {
2984 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2985 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
2986 .config = config,
2987 };
2988
2989 if (!temp.config) {
2990 temp.config = strdup("event");
2991 if (!temp.config)
2992 return -ENOMEM;
2993 }
2994 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2995 sym = &event_symbols_hw[idx];
2996
2997 str = strdup(sym->symbol);
2998 if (!str)
2999 return -ENOMEM;
3000 return new_term(term, &temp, str, 0);
3001}
3002
3003int parse_events_term__clone(struct parse_events_term **new,
3004 struct parse_events_term *term)
3005{
3006 char *str;
3007 struct parse_events_term temp = {
3008 .type_val = term->type_val,
3009 .type_term = term->type_term,
3010 .config = NULL,
3011 .err_term = term->err_term,
3012 .err_val = term->err_val,
3013 };
3014
3015 if (term->config) {
3016 temp.config = strdup(term->config);
3017 if (!temp.config)
3018 return -ENOMEM;
3019 }
3020 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
3021 return new_term(new, &temp, NULL, term->val.num);
3022
3023 str = strdup(term->val.str);
3024 if (!str)
3025 return -ENOMEM;
3026 return new_term(new, &temp, str, 0);
3027}
3028
3029void parse_events_term__delete(struct parse_events_term *term)
3030{
3031 if (term->array.nr_ranges)
3032 zfree(&term->array.ranges);
3033
3034 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
3035 zfree(&term->val.str);
3036
3037 zfree(&term->config);
3038 free(term);
3039}
3040
3041int parse_events_copy_term_list(struct list_head *old,
3042 struct list_head **new)
3043{
3044 struct parse_events_term *term, *n;
3045 int ret;
3046
3047 if (!old) {
3048 *new = NULL;
3049 return 0;
3050 }
3051
3052 *new = malloc(sizeof(struct list_head));
3053 if (!*new)
3054 return -ENOMEM;
3055 INIT_LIST_HEAD(*new);
3056
3057 list_for_each_entry (term, old, list) {
3058 ret = parse_events_term__clone(&n, term);
3059 if (ret)
3060 return ret;
3061 list_add_tail(&n->list, *new);
3062 }
3063 return 0;
3064}
3065
3066void parse_events_terms__purge(struct list_head *terms)
3067{
3068 struct parse_events_term *term, *h;
3069
3070 list_for_each_entry_safe(term, h, terms, list) {
3071 list_del_init(&term->list);
3072 parse_events_term__delete(term);
3073 }
3074}
3075
3076void parse_events_terms__delete(struct list_head *terms)
3077{
3078 if (!terms)
3079 return;
3080 parse_events_terms__purge(terms);
3081 free(terms);
3082}
3083
3084void parse_events__clear_array(struct parse_events_array *a)
3085{
3086 zfree(&a->ranges);
3087}
3088
3089void parse_events_evlist_error(struct parse_events_state *parse_state,
3090 int idx, const char *str)
3091{
3092 if (!parse_state->error)
3093 return;
3094
3095 parse_events__handle_error(parse_state->error, idx, strdup(str), NULL);
3096}
3097
3098static void config_terms_list(char *buf, size_t buf_sz)
3099{
3100 int i;
3101 bool first = true;
3102
3103 buf[0] = '\0';
3104 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
3105 const char *name = config_term_names[i];
3106
3107 if (!config_term_avail(i, NULL))
3108 continue;
3109 if (!name)
3110 continue;
3111 if (name[0] == '<')
3112 continue;
3113
3114 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
3115 return;
3116
3117 if (!first)
3118 strcat(buf, ",");
3119 else
3120 first = false;
3121 strcat(buf, name);
3122 }
3123}
3124
3125/*
3126 * Return string contains valid config terms of an event.
3127 * @additional_terms: For terms such as PMU sysfs terms.
3128 */
3129char *parse_events_formats_error_string(char *additional_terms)
3130{
3131 char *str;
3132 /* "no-overwrite" is the longest name */
3133 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
3134 (sizeof("no-overwrite") - 1)];
3135
3136 config_terms_list(static_terms, sizeof(static_terms));
3137 /* valid terms */
3138 if (additional_terms) {
3139 if (asprintf(&str, "valid terms: %s,%s",
3140 additional_terms, static_terms) < 0)
3141 goto fail;
3142 } else {
3143 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
3144 goto fail;
3145 }
3146 return str;
3147
3148fail:
3149 return NULL;
3150}