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1// SPDX-License-Identifier: GPL-2.0
2#include <linux/hw_breakpoint.h>
3#include <linux/err.h>
4#include <linux/list_sort.h>
5#include <linux/zalloc.h>
6#include <dirent.h>
7#include <errno.h>
8#include <sys/ioctl.h>
9#include <sys/param.h>
10#include "term.h"
11#include "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#include <linux/hw_breakpoint.h>
2#include <linux/err.h>
3#include "util.h"
4#include "../perf.h"
5#include "evlist.h"
6#include "evsel.h"
7#include <subcmd/parse-options.h>
8#include "parse-events.h"
9#include <subcmd/exec-cmd.h>
10#include "string.h"
11#include "symbol.h"
12#include "cache.h"
13#include "header.h"
14#include "bpf-loader.h"
15#include "debug.h"
16#include <api/fs/tracing_path.h>
17#include "parse-events-bison.h"
18#define YY_EXTRA_TYPE int
19#include "parse-events-flex.h"
20#include "pmu.h"
21#include "thread_map.h"
22#include "cpumap.h"
23#include "probe-file.h"
24#include "asm/bug.h"
25#include "util/parse-branch-options.h"
26
27#define MAX_NAME_LEN 100
28
29#ifdef PARSER_DEBUG
30extern int parse_events_debug;
31#endif
32int parse_events_parse(void *data, void *scanner);
33static int get_config_terms(struct list_head *head_config,
34 struct list_head *head_terms __maybe_unused);
35
36static struct perf_pmu_event_symbol *perf_pmu_events_list;
37/*
38 * The variable indicates the number of supported pmu event symbols.
39 * 0 means not initialized and ready to init
40 * -1 means failed to init, don't try anymore
41 * >0 is the number of supported pmu event symbols
42 */
43static int perf_pmu_events_list_num;
44
45struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
46 [PERF_COUNT_HW_CPU_CYCLES] = {
47 .symbol = "cpu-cycles",
48 .alias = "cycles",
49 },
50 [PERF_COUNT_HW_INSTRUCTIONS] = {
51 .symbol = "instructions",
52 .alias = "",
53 },
54 [PERF_COUNT_HW_CACHE_REFERENCES] = {
55 .symbol = "cache-references",
56 .alias = "",
57 },
58 [PERF_COUNT_HW_CACHE_MISSES] = {
59 .symbol = "cache-misses",
60 .alias = "",
61 },
62 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
63 .symbol = "branch-instructions",
64 .alias = "branches",
65 },
66 [PERF_COUNT_HW_BRANCH_MISSES] = {
67 .symbol = "branch-misses",
68 .alias = "",
69 },
70 [PERF_COUNT_HW_BUS_CYCLES] = {
71 .symbol = "bus-cycles",
72 .alias = "",
73 },
74 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
75 .symbol = "stalled-cycles-frontend",
76 .alias = "idle-cycles-frontend",
77 },
78 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
79 .symbol = "stalled-cycles-backend",
80 .alias = "idle-cycles-backend",
81 },
82 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
83 .symbol = "ref-cycles",
84 .alias = "",
85 },
86};
87
88struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
89 [PERF_COUNT_SW_CPU_CLOCK] = {
90 .symbol = "cpu-clock",
91 .alias = "",
92 },
93 [PERF_COUNT_SW_TASK_CLOCK] = {
94 .symbol = "task-clock",
95 .alias = "",
96 },
97 [PERF_COUNT_SW_PAGE_FAULTS] = {
98 .symbol = "page-faults",
99 .alias = "faults",
100 },
101 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
102 .symbol = "context-switches",
103 .alias = "cs",
104 },
105 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
106 .symbol = "cpu-migrations",
107 .alias = "migrations",
108 },
109 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
110 .symbol = "minor-faults",
111 .alias = "",
112 },
113 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
114 .symbol = "major-faults",
115 .alias = "",
116 },
117 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
118 .symbol = "alignment-faults",
119 .alias = "",
120 },
121 [PERF_COUNT_SW_EMULATION_FAULTS] = {
122 .symbol = "emulation-faults",
123 .alias = "",
124 },
125 [PERF_COUNT_SW_DUMMY] = {
126 .symbol = "dummy",
127 .alias = "",
128 },
129 [PERF_COUNT_SW_BPF_OUTPUT] = {
130 .symbol = "bpf-output",
131 .alias = "",
132 },
133};
134
135#define __PERF_EVENT_FIELD(config, name) \
136 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
137
138#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
139#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
140#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
141#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
142
143#define for_each_subsystem(sys_dir, sys_dirent) \
144 while ((sys_dirent = readdir(sys_dir)) != NULL) \
145 if (sys_dirent->d_type == DT_DIR && \
146 (strcmp(sys_dirent->d_name, ".")) && \
147 (strcmp(sys_dirent->d_name, "..")))
148
149static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
150{
151 char evt_path[MAXPATHLEN];
152 int fd;
153
154 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
155 sys_dir->d_name, evt_dir->d_name);
156 fd = open(evt_path, O_RDONLY);
157 if (fd < 0)
158 return -EINVAL;
159 close(fd);
160
161 return 0;
162}
163
164#define for_each_event(sys_dirent, evt_dir, evt_dirent) \
165 while ((evt_dirent = readdir(evt_dir)) != NULL) \
166 if (evt_dirent->d_type == DT_DIR && \
167 (strcmp(evt_dirent->d_name, ".")) && \
168 (strcmp(evt_dirent->d_name, "..")) && \
169 (!tp_event_has_id(sys_dirent, evt_dirent)))
170
171#define MAX_EVENT_LENGTH 512
172
173
174struct tracepoint_path *tracepoint_id_to_path(u64 config)
175{
176 struct tracepoint_path *path = NULL;
177 DIR *sys_dir, *evt_dir;
178 struct dirent *sys_dirent, *evt_dirent;
179 char id_buf[24];
180 int fd;
181 u64 id;
182 char evt_path[MAXPATHLEN];
183 char dir_path[MAXPATHLEN];
184
185 sys_dir = opendir(tracing_events_path);
186 if (!sys_dir)
187 return NULL;
188
189 for_each_subsystem(sys_dir, sys_dirent) {
190
191 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
192 sys_dirent->d_name);
193 evt_dir = opendir(dir_path);
194 if (!evt_dir)
195 continue;
196
197 for_each_event(sys_dirent, evt_dir, evt_dirent) {
198
199 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
200 evt_dirent->d_name);
201 fd = open(evt_path, O_RDONLY);
202 if (fd < 0)
203 continue;
204 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
205 close(fd);
206 continue;
207 }
208 close(fd);
209 id = atoll(id_buf);
210 if (id == config) {
211 closedir(evt_dir);
212 closedir(sys_dir);
213 path = zalloc(sizeof(*path));
214 path->system = malloc(MAX_EVENT_LENGTH);
215 if (!path->system) {
216 free(path);
217 return NULL;
218 }
219 path->name = malloc(MAX_EVENT_LENGTH);
220 if (!path->name) {
221 zfree(&path->system);
222 free(path);
223 return NULL;
224 }
225 strncpy(path->system, sys_dirent->d_name,
226 MAX_EVENT_LENGTH);
227 strncpy(path->name, evt_dirent->d_name,
228 MAX_EVENT_LENGTH);
229 return path;
230 }
231 }
232 closedir(evt_dir);
233 }
234
235 closedir(sys_dir);
236 return NULL;
237}
238
239struct tracepoint_path *tracepoint_name_to_path(const char *name)
240{
241 struct tracepoint_path *path = zalloc(sizeof(*path));
242 char *str = strchr(name, ':');
243
244 if (path == NULL || str == NULL) {
245 free(path);
246 return NULL;
247 }
248
249 path->system = strndup(name, str - name);
250 path->name = strdup(str+1);
251
252 if (path->system == NULL || path->name == NULL) {
253 zfree(&path->system);
254 zfree(&path->name);
255 free(path);
256 path = NULL;
257 }
258
259 return path;
260}
261
262const char *event_type(int type)
263{
264 switch (type) {
265 case PERF_TYPE_HARDWARE:
266 return "hardware";
267
268 case PERF_TYPE_SOFTWARE:
269 return "software";
270
271 case PERF_TYPE_TRACEPOINT:
272 return "tracepoint";
273
274 case PERF_TYPE_HW_CACHE:
275 return "hardware-cache";
276
277 default:
278 break;
279 }
280
281 return "unknown";
282}
283
284static int parse_events__is_name_term(struct parse_events_term *term)
285{
286 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
287}
288
289static char *get_config_name(struct list_head *head_terms)
290{
291 struct parse_events_term *term;
292
293 if (!head_terms)
294 return NULL;
295
296 list_for_each_entry(term, head_terms, list)
297 if (parse_events__is_name_term(term))
298 return term->val.str;
299
300 return NULL;
301}
302
303static struct perf_evsel *
304__add_event(struct list_head *list, int *idx,
305 struct perf_event_attr *attr,
306 char *name, struct cpu_map *cpus,
307 struct list_head *config_terms)
308{
309 struct perf_evsel *evsel;
310
311 event_attr_init(attr);
312
313 evsel = perf_evsel__new_idx(attr, (*idx)++);
314 if (!evsel)
315 return NULL;
316
317 evsel->cpus = cpu_map__get(cpus);
318 evsel->own_cpus = cpu_map__get(cpus);
319
320 if (name)
321 evsel->name = strdup(name);
322
323 if (config_terms)
324 list_splice(config_terms, &evsel->config_terms);
325
326 list_add_tail(&evsel->node, list);
327 return evsel;
328}
329
330static int add_event(struct list_head *list, int *idx,
331 struct perf_event_attr *attr, char *name,
332 struct list_head *config_terms)
333{
334 return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM;
335}
336
337static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
338{
339 int i, j;
340 int n, longest = -1;
341
342 for (i = 0; i < size; i++) {
343 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
344 n = strlen(names[i][j]);
345 if (n > longest && !strncasecmp(str, names[i][j], n))
346 longest = n;
347 }
348 if (longest > 0)
349 return i;
350 }
351
352 return -1;
353}
354
355typedef int config_term_func_t(struct perf_event_attr *attr,
356 struct parse_events_term *term,
357 struct parse_events_error *err);
358static int config_term_common(struct perf_event_attr *attr,
359 struct parse_events_term *term,
360 struct parse_events_error *err);
361static int config_attr(struct perf_event_attr *attr,
362 struct list_head *head,
363 struct parse_events_error *err,
364 config_term_func_t config_term);
365
366int parse_events_add_cache(struct list_head *list, int *idx,
367 char *type, char *op_result1, char *op_result2,
368 struct parse_events_error *err,
369 struct list_head *head_config)
370{
371 struct perf_event_attr attr;
372 LIST_HEAD(config_terms);
373 char name[MAX_NAME_LEN], *config_name;
374 int cache_type = -1, cache_op = -1, cache_result = -1;
375 char *op_result[2] = { op_result1, op_result2 };
376 int i, n;
377
378 /*
379 * No fallback - if we cannot get a clear cache type
380 * then bail out:
381 */
382 cache_type = parse_aliases(type, perf_evsel__hw_cache,
383 PERF_COUNT_HW_CACHE_MAX);
384 if (cache_type == -1)
385 return -EINVAL;
386
387 config_name = get_config_name(head_config);
388 n = snprintf(name, MAX_NAME_LEN, "%s", type);
389
390 for (i = 0; (i < 2) && (op_result[i]); i++) {
391 char *str = op_result[i];
392
393 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
394
395 if (cache_op == -1) {
396 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
397 PERF_COUNT_HW_CACHE_OP_MAX);
398 if (cache_op >= 0) {
399 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
400 return -EINVAL;
401 continue;
402 }
403 }
404
405 if (cache_result == -1) {
406 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
407 PERF_COUNT_HW_CACHE_RESULT_MAX);
408 if (cache_result >= 0)
409 continue;
410 }
411 }
412
413 /*
414 * Fall back to reads:
415 */
416 if (cache_op == -1)
417 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
418
419 /*
420 * Fall back to accesses:
421 */
422 if (cache_result == -1)
423 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
424
425 memset(&attr, 0, sizeof(attr));
426 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
427 attr.type = PERF_TYPE_HW_CACHE;
428
429 if (head_config) {
430 if (config_attr(&attr, head_config, err,
431 config_term_common))
432 return -EINVAL;
433
434 if (get_config_terms(head_config, &config_terms))
435 return -ENOMEM;
436 }
437 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
438}
439
440static void tracepoint_error(struct parse_events_error *e, int err,
441 const char *sys, const char *name)
442{
443 char help[BUFSIZ];
444
445 if (!e)
446 return;
447
448 /*
449 * We get error directly from syscall errno ( > 0),
450 * or from encoded pointer's error ( < 0).
451 */
452 err = abs(err);
453
454 switch (err) {
455 case EACCES:
456 e->str = strdup("can't access trace events");
457 break;
458 case ENOENT:
459 e->str = strdup("unknown tracepoint");
460 break;
461 default:
462 e->str = strdup("failed to add tracepoint");
463 break;
464 }
465
466 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
467 e->help = strdup(help);
468}
469
470static int add_tracepoint(struct list_head *list, int *idx,
471 const char *sys_name, const char *evt_name,
472 struct parse_events_error *err,
473 struct list_head *head_config)
474{
475 struct perf_evsel *evsel;
476
477 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
478 if (IS_ERR(evsel)) {
479 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
480 return PTR_ERR(evsel);
481 }
482
483 if (head_config) {
484 LIST_HEAD(config_terms);
485
486 if (get_config_terms(head_config, &config_terms))
487 return -ENOMEM;
488 list_splice(&config_terms, &evsel->config_terms);
489 }
490
491 list_add_tail(&evsel->node, list);
492 return 0;
493}
494
495static int add_tracepoint_multi_event(struct list_head *list, int *idx,
496 const char *sys_name, const char *evt_name,
497 struct parse_events_error *err,
498 struct list_head *head_config)
499{
500 char evt_path[MAXPATHLEN];
501 struct dirent *evt_ent;
502 DIR *evt_dir;
503 int ret = 0, found = 0;
504
505 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
506 evt_dir = opendir(evt_path);
507 if (!evt_dir) {
508 tracepoint_error(err, errno, sys_name, evt_name);
509 return -1;
510 }
511
512 while (!ret && (evt_ent = readdir(evt_dir))) {
513 if (!strcmp(evt_ent->d_name, ".")
514 || !strcmp(evt_ent->d_name, "..")
515 || !strcmp(evt_ent->d_name, "enable")
516 || !strcmp(evt_ent->d_name, "filter"))
517 continue;
518
519 if (!strglobmatch(evt_ent->d_name, evt_name))
520 continue;
521
522 found++;
523
524 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
525 err, head_config);
526 }
527
528 if (!found) {
529 tracepoint_error(err, ENOENT, sys_name, evt_name);
530 ret = -1;
531 }
532
533 closedir(evt_dir);
534 return ret;
535}
536
537static int add_tracepoint_event(struct list_head *list, int *idx,
538 const char *sys_name, const char *evt_name,
539 struct parse_events_error *err,
540 struct list_head *head_config)
541{
542 return strpbrk(evt_name, "*?") ?
543 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
544 err, head_config) :
545 add_tracepoint(list, idx, sys_name, evt_name,
546 err, head_config);
547}
548
549static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
550 const char *sys_name, const char *evt_name,
551 struct parse_events_error *err,
552 struct list_head *head_config)
553{
554 struct dirent *events_ent;
555 DIR *events_dir;
556 int ret = 0;
557
558 events_dir = opendir(tracing_events_path);
559 if (!events_dir) {
560 tracepoint_error(err, errno, sys_name, evt_name);
561 return -1;
562 }
563
564 while (!ret && (events_ent = readdir(events_dir))) {
565 if (!strcmp(events_ent->d_name, ".")
566 || !strcmp(events_ent->d_name, "..")
567 || !strcmp(events_ent->d_name, "enable")
568 || !strcmp(events_ent->d_name, "header_event")
569 || !strcmp(events_ent->d_name, "header_page"))
570 continue;
571
572 if (!strglobmatch(events_ent->d_name, sys_name))
573 continue;
574
575 ret = add_tracepoint_event(list, idx, events_ent->d_name,
576 evt_name, err, head_config);
577 }
578
579 closedir(events_dir);
580 return ret;
581}
582
583struct __add_bpf_event_param {
584 struct parse_events_evlist *data;
585 struct list_head *list;
586 struct list_head *head_config;
587};
588
589static int add_bpf_event(const char *group, const char *event, int fd,
590 void *_param)
591{
592 LIST_HEAD(new_evsels);
593 struct __add_bpf_event_param *param = _param;
594 struct parse_events_evlist *evlist = param->data;
595 struct list_head *list = param->list;
596 struct perf_evsel *pos;
597 int err;
598
599 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
600 group, event, fd);
601
602 err = parse_events_add_tracepoint(&new_evsels, &evlist->idx, group,
603 event, evlist->error,
604 param->head_config);
605 if (err) {
606 struct perf_evsel *evsel, *tmp;
607
608 pr_debug("Failed to add BPF event %s:%s\n",
609 group, event);
610 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
611 list_del(&evsel->node);
612 perf_evsel__delete(evsel);
613 }
614 return err;
615 }
616 pr_debug("adding %s:%s\n", group, event);
617
618 list_for_each_entry(pos, &new_evsels, node) {
619 pr_debug("adding %s:%s to %p\n",
620 group, event, pos);
621 pos->bpf_fd = fd;
622 }
623 list_splice(&new_evsels, list);
624 return 0;
625}
626
627int parse_events_load_bpf_obj(struct parse_events_evlist *data,
628 struct list_head *list,
629 struct bpf_object *obj,
630 struct list_head *head_config)
631{
632 int err;
633 char errbuf[BUFSIZ];
634 struct __add_bpf_event_param param = {data, list, head_config};
635 static bool registered_unprobe_atexit = false;
636
637 if (IS_ERR(obj) || !obj) {
638 snprintf(errbuf, sizeof(errbuf),
639 "Internal error: load bpf obj with NULL");
640 err = -EINVAL;
641 goto errout;
642 }
643
644 /*
645 * Register atexit handler before calling bpf__probe() so
646 * bpf__probe() don't need to unprobe probe points its already
647 * created when failure.
648 */
649 if (!registered_unprobe_atexit) {
650 atexit(bpf__clear);
651 registered_unprobe_atexit = true;
652 }
653
654 err = bpf__probe(obj);
655 if (err) {
656 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
657 goto errout;
658 }
659
660 err = bpf__load(obj);
661 if (err) {
662 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
663 goto errout;
664 }
665
666 err = bpf__foreach_event(obj, add_bpf_event, ¶m);
667 if (err) {
668 snprintf(errbuf, sizeof(errbuf),
669 "Attach events in BPF object failed");
670 goto errout;
671 }
672
673 return 0;
674errout:
675 data->error->help = strdup("(add -v to see detail)");
676 data->error->str = strdup(errbuf);
677 return err;
678}
679
680static int
681parse_events_config_bpf(struct parse_events_evlist *data,
682 struct bpf_object *obj,
683 struct list_head *head_config)
684{
685 struct parse_events_term *term;
686 int error_pos;
687
688 if (!head_config || list_empty(head_config))
689 return 0;
690
691 list_for_each_entry(term, head_config, list) {
692 char errbuf[BUFSIZ];
693 int err;
694
695 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
696 snprintf(errbuf, sizeof(errbuf),
697 "Invalid config term for BPF object");
698 errbuf[BUFSIZ - 1] = '\0';
699
700 data->error->idx = term->err_term;
701 data->error->str = strdup(errbuf);
702 return -EINVAL;
703 }
704
705 err = bpf__config_obj(obj, term, data->evlist, &error_pos);
706 if (err) {
707 bpf__strerror_config_obj(obj, term, data->evlist,
708 &error_pos, err, errbuf,
709 sizeof(errbuf));
710 data->error->help = strdup(
711"Hint:\tValid config terms:\n"
712" \tmap:[<arraymap>].value<indices>=[value]\n"
713" \tmap:[<eventmap>].event<indices>=[event]\n"
714"\n"
715" \twhere <indices> is something like [0,3...5] or [all]\n"
716" \t(add -v to see detail)");
717 data->error->str = strdup(errbuf);
718 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
719 data->error->idx = term->err_val;
720 else
721 data->error->idx = term->err_term + error_pos;
722 return err;
723 }
724 }
725 return 0;
726}
727
728/*
729 * Split config terms:
730 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
731 * 'call-graph=fp' is 'evt config', should be applied to each
732 * events in bpf.c.
733 * 'map:array.value[0]=1' is 'obj config', should be processed
734 * with parse_events_config_bpf.
735 *
736 * Move object config terms from the first list to obj_head_config.
737 */
738static void
739split_bpf_config_terms(struct list_head *evt_head_config,
740 struct list_head *obj_head_config)
741{
742 struct parse_events_term *term, *temp;
743
744 /*
745 * Currectly, all possible user config term
746 * belong to bpf object. parse_events__is_hardcoded_term()
747 * happends to be a good flag.
748 *
749 * See parse_events_config_bpf() and
750 * config_term_tracepoint().
751 */
752 list_for_each_entry_safe(term, temp, evt_head_config, list)
753 if (!parse_events__is_hardcoded_term(term))
754 list_move_tail(&term->list, obj_head_config);
755}
756
757int parse_events_load_bpf(struct parse_events_evlist *data,
758 struct list_head *list,
759 char *bpf_file_name,
760 bool source,
761 struct list_head *head_config)
762{
763 int err;
764 struct bpf_object *obj;
765 LIST_HEAD(obj_head_config);
766
767 if (head_config)
768 split_bpf_config_terms(head_config, &obj_head_config);
769
770 obj = bpf__prepare_load(bpf_file_name, source);
771 if (IS_ERR(obj)) {
772 char errbuf[BUFSIZ];
773
774 err = PTR_ERR(obj);
775
776 if (err == -ENOTSUP)
777 snprintf(errbuf, sizeof(errbuf),
778 "BPF support is not compiled");
779 else
780 bpf__strerror_prepare_load(bpf_file_name,
781 source,
782 -err, errbuf,
783 sizeof(errbuf));
784
785 data->error->help = strdup("(add -v to see detail)");
786 data->error->str = strdup(errbuf);
787 return err;
788 }
789
790 err = parse_events_load_bpf_obj(data, list, obj, head_config);
791 if (err)
792 return err;
793 err = parse_events_config_bpf(data, obj, &obj_head_config);
794
795 /*
796 * Caller doesn't know anything about obj_head_config,
797 * so combine them together again before returnning.
798 */
799 if (head_config)
800 list_splice_tail(&obj_head_config, head_config);
801 return err;
802}
803
804static int
805parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
806{
807 int i;
808
809 for (i = 0; i < 3; i++) {
810 if (!type || !type[i])
811 break;
812
813#define CHECK_SET_TYPE(bit) \
814do { \
815 if (attr->bp_type & bit) \
816 return -EINVAL; \
817 else \
818 attr->bp_type |= bit; \
819} while (0)
820
821 switch (type[i]) {
822 case 'r':
823 CHECK_SET_TYPE(HW_BREAKPOINT_R);
824 break;
825 case 'w':
826 CHECK_SET_TYPE(HW_BREAKPOINT_W);
827 break;
828 case 'x':
829 CHECK_SET_TYPE(HW_BREAKPOINT_X);
830 break;
831 default:
832 return -EINVAL;
833 }
834 }
835
836#undef CHECK_SET_TYPE
837
838 if (!attr->bp_type) /* Default */
839 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
840
841 return 0;
842}
843
844int parse_events_add_breakpoint(struct list_head *list, int *idx,
845 void *ptr, char *type, u64 len)
846{
847 struct perf_event_attr attr;
848
849 memset(&attr, 0, sizeof(attr));
850 attr.bp_addr = (unsigned long) ptr;
851
852 if (parse_breakpoint_type(type, &attr))
853 return -EINVAL;
854
855 /* Provide some defaults if len is not specified */
856 if (!len) {
857 if (attr.bp_type == HW_BREAKPOINT_X)
858 len = sizeof(long);
859 else
860 len = HW_BREAKPOINT_LEN_4;
861 }
862
863 attr.bp_len = len;
864
865 attr.type = PERF_TYPE_BREAKPOINT;
866 attr.sample_period = 1;
867
868 return add_event(list, idx, &attr, NULL, NULL);
869}
870
871static int check_type_val(struct parse_events_term *term,
872 struct parse_events_error *err,
873 int type)
874{
875 if (type == term->type_val)
876 return 0;
877
878 if (err) {
879 err->idx = term->err_val;
880 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
881 err->str = strdup("expected numeric value");
882 else
883 err->str = strdup("expected string value");
884 }
885 return -EINVAL;
886}
887
888/*
889 * Update according to parse-events.l
890 */
891static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
892 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
893 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
894 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
895 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
896 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
897 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
898 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
899 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
900 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
901 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
902 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
903 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
904 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
905 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
906 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
907 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
908 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
909};
910
911static bool config_term_shrinked;
912
913static bool
914config_term_avail(int term_type, struct parse_events_error *err)
915{
916 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
917 err->str = strdup("Invalid term_type");
918 return false;
919 }
920 if (!config_term_shrinked)
921 return true;
922
923 switch (term_type) {
924 case PARSE_EVENTS__TERM_TYPE_CONFIG:
925 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
926 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
927 case PARSE_EVENTS__TERM_TYPE_NAME:
928 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
929 return true;
930 default:
931 if (!err)
932 return false;
933
934 /* term_type is validated so indexing is safe */
935 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
936 config_term_names[term_type]) < 0)
937 err->str = NULL;
938 return false;
939 }
940}
941
942void parse_events__shrink_config_terms(void)
943{
944 config_term_shrinked = true;
945}
946
947static int config_term_common(struct perf_event_attr *attr,
948 struct parse_events_term *term,
949 struct parse_events_error *err)
950{
951#define CHECK_TYPE_VAL(type) \
952do { \
953 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
954 return -EINVAL; \
955} while (0)
956
957 switch (term->type_term) {
958 case PARSE_EVENTS__TERM_TYPE_CONFIG:
959 CHECK_TYPE_VAL(NUM);
960 attr->config = term->val.num;
961 break;
962 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
963 CHECK_TYPE_VAL(NUM);
964 attr->config1 = term->val.num;
965 break;
966 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
967 CHECK_TYPE_VAL(NUM);
968 attr->config2 = term->val.num;
969 break;
970 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
971 CHECK_TYPE_VAL(NUM);
972 break;
973 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
974 CHECK_TYPE_VAL(NUM);
975 break;
976 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
977 CHECK_TYPE_VAL(STR);
978 if (strcmp(term->val.str, "no") &&
979 parse_branch_str(term->val.str, &attr->branch_sample_type)) {
980 err->str = strdup("invalid branch sample type");
981 err->idx = term->err_val;
982 return -EINVAL;
983 }
984 break;
985 case PARSE_EVENTS__TERM_TYPE_TIME:
986 CHECK_TYPE_VAL(NUM);
987 if (term->val.num > 1) {
988 err->str = strdup("expected 0 or 1");
989 err->idx = term->err_val;
990 return -EINVAL;
991 }
992 break;
993 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
994 CHECK_TYPE_VAL(STR);
995 break;
996 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
997 CHECK_TYPE_VAL(NUM);
998 break;
999 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1000 CHECK_TYPE_VAL(NUM);
1001 break;
1002 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1003 CHECK_TYPE_VAL(NUM);
1004 break;
1005 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1006 CHECK_TYPE_VAL(NUM);
1007 break;
1008 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1009 CHECK_TYPE_VAL(NUM);
1010 break;
1011 case PARSE_EVENTS__TERM_TYPE_NAME:
1012 CHECK_TYPE_VAL(STR);
1013 break;
1014 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1015 CHECK_TYPE_VAL(NUM);
1016 break;
1017 default:
1018 err->str = strdup("unknown term");
1019 err->idx = term->err_term;
1020 err->help = parse_events_formats_error_string(NULL);
1021 return -EINVAL;
1022 }
1023
1024 /*
1025 * Check term availbility after basic checking so
1026 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1027 *
1028 * If check availbility at the entry of this function,
1029 * user will see "'<sysfs term>' is not usable in 'perf stat'"
1030 * if an invalid config term is provided for legacy events
1031 * (for example, instructions/badterm/...), which is confusing.
1032 */
1033 if (!config_term_avail(term->type_term, err))
1034 return -EINVAL;
1035 return 0;
1036#undef CHECK_TYPE_VAL
1037}
1038
1039static int config_term_pmu(struct perf_event_attr *attr,
1040 struct parse_events_term *term,
1041 struct parse_events_error *err)
1042{
1043 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1044 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1045 /*
1046 * Always succeed for sysfs terms, as we dont know
1047 * at this point what type they need to have.
1048 */
1049 return 0;
1050 else
1051 return config_term_common(attr, term, err);
1052}
1053
1054static int config_term_tracepoint(struct perf_event_attr *attr,
1055 struct parse_events_term *term,
1056 struct parse_events_error *err)
1057{
1058 switch (term->type_term) {
1059 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1060 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1061 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1062 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1063 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1064 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1065 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1066 return config_term_common(attr, term, err);
1067 default:
1068 if (err) {
1069 err->idx = term->err_term;
1070 err->str = strdup("unknown term");
1071 err->help = strdup("valid terms: call-graph,stack-size\n");
1072 }
1073 return -EINVAL;
1074 }
1075
1076 return 0;
1077}
1078
1079static int config_attr(struct perf_event_attr *attr,
1080 struct list_head *head,
1081 struct parse_events_error *err,
1082 config_term_func_t config_term)
1083{
1084 struct parse_events_term *term;
1085
1086 list_for_each_entry(term, head, list)
1087 if (config_term(attr, term, err))
1088 return -EINVAL;
1089
1090 return 0;
1091}
1092
1093static int get_config_terms(struct list_head *head_config,
1094 struct list_head *head_terms __maybe_unused)
1095{
1096#define ADD_CONFIG_TERM(__type, __name, __val) \
1097do { \
1098 struct perf_evsel_config_term *__t; \
1099 \
1100 __t = zalloc(sizeof(*__t)); \
1101 if (!__t) \
1102 return -ENOMEM; \
1103 \
1104 INIT_LIST_HEAD(&__t->list); \
1105 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1106 __t->val.__name = __val; \
1107 list_add_tail(&__t->list, head_terms); \
1108} while (0)
1109
1110 struct parse_events_term *term;
1111
1112 list_for_each_entry(term, head_config, list) {
1113 switch (term->type_term) {
1114 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1115 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1116 break;
1117 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1118 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1119 break;
1120 case PARSE_EVENTS__TERM_TYPE_TIME:
1121 ADD_CONFIG_TERM(TIME, time, term->val.num);
1122 break;
1123 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1124 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1125 break;
1126 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1127 ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
1128 break;
1129 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1130 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1131 break;
1132 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1133 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1134 break;
1135 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1136 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1137 break;
1138 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1139 ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1140 break;
1141 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1142 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1143 break;
1144 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1145 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1146 break;
1147 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1148 ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1149 break;
1150 default:
1151 break;
1152 }
1153 }
1154#undef ADD_EVSEL_CONFIG
1155 return 0;
1156}
1157
1158int parse_events_add_tracepoint(struct list_head *list, int *idx,
1159 const char *sys, const char *event,
1160 struct parse_events_error *err,
1161 struct list_head *head_config)
1162{
1163 if (head_config) {
1164 struct perf_event_attr attr;
1165
1166 if (config_attr(&attr, head_config, err,
1167 config_term_tracepoint))
1168 return -EINVAL;
1169 }
1170
1171 if (strpbrk(sys, "*?"))
1172 return add_tracepoint_multi_sys(list, idx, sys, event,
1173 err, head_config);
1174 else
1175 return add_tracepoint_event(list, idx, sys, event,
1176 err, head_config);
1177}
1178
1179int parse_events_add_numeric(struct parse_events_evlist *data,
1180 struct list_head *list,
1181 u32 type, u64 config,
1182 struct list_head *head_config)
1183{
1184 struct perf_event_attr attr;
1185 LIST_HEAD(config_terms);
1186
1187 memset(&attr, 0, sizeof(attr));
1188 attr.type = type;
1189 attr.config = config;
1190
1191 if (head_config) {
1192 if (config_attr(&attr, head_config, data->error,
1193 config_term_common))
1194 return -EINVAL;
1195
1196 if (get_config_terms(head_config, &config_terms))
1197 return -ENOMEM;
1198 }
1199
1200 return add_event(list, &data->idx, &attr,
1201 get_config_name(head_config), &config_terms);
1202}
1203
1204int parse_events_add_pmu(struct parse_events_evlist *data,
1205 struct list_head *list, char *name,
1206 struct list_head *head_config)
1207{
1208 struct perf_event_attr attr;
1209 struct perf_pmu_info info;
1210 struct perf_pmu *pmu;
1211 struct perf_evsel *evsel;
1212 LIST_HEAD(config_terms);
1213
1214 pmu = perf_pmu__find(name);
1215 if (!pmu)
1216 return -EINVAL;
1217
1218 if (pmu->default_config) {
1219 memcpy(&attr, pmu->default_config,
1220 sizeof(struct perf_event_attr));
1221 } else {
1222 memset(&attr, 0, sizeof(attr));
1223 }
1224
1225 if (!head_config) {
1226 attr.type = pmu->type;
1227 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
1228 return evsel ? 0 : -ENOMEM;
1229 }
1230
1231 if (perf_pmu__check_alias(pmu, head_config, &info))
1232 return -EINVAL;
1233
1234 /*
1235 * Configure hardcoded terms first, no need to check
1236 * return value when called with fail == 0 ;)
1237 */
1238 if (config_attr(&attr, head_config, data->error, config_term_pmu))
1239 return -EINVAL;
1240
1241 if (get_config_terms(head_config, &config_terms))
1242 return -ENOMEM;
1243
1244 if (perf_pmu__config(pmu, &attr, head_config, data->error))
1245 return -EINVAL;
1246
1247 evsel = __add_event(list, &data->idx, &attr,
1248 get_config_name(head_config), pmu->cpus,
1249 &config_terms);
1250 if (evsel) {
1251 evsel->unit = info.unit;
1252 evsel->scale = info.scale;
1253 evsel->per_pkg = info.per_pkg;
1254 evsel->snapshot = info.snapshot;
1255 }
1256
1257 return evsel ? 0 : -ENOMEM;
1258}
1259
1260int parse_events__modifier_group(struct list_head *list,
1261 char *event_mod)
1262{
1263 return parse_events__modifier_event(list, event_mod, true);
1264}
1265
1266void parse_events__set_leader(char *name, struct list_head *list)
1267{
1268 struct perf_evsel *leader;
1269
1270 if (list_empty(list)) {
1271 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1272 return;
1273 }
1274
1275 __perf_evlist__set_leader(list);
1276 leader = list_entry(list->next, struct perf_evsel, node);
1277 leader->group_name = name ? strdup(name) : NULL;
1278}
1279
1280/* list_event is assumed to point to malloc'ed memory */
1281void parse_events_update_lists(struct list_head *list_event,
1282 struct list_head *list_all)
1283{
1284 /*
1285 * Called for single event definition. Update the
1286 * 'all event' list, and reinit the 'single event'
1287 * list, for next event definition.
1288 */
1289 list_splice_tail(list_event, list_all);
1290 free(list_event);
1291}
1292
1293struct event_modifier {
1294 int eu;
1295 int ek;
1296 int eh;
1297 int eH;
1298 int eG;
1299 int eI;
1300 int precise;
1301 int precise_max;
1302 int exclude_GH;
1303 int sample_read;
1304 int pinned;
1305};
1306
1307static int get_event_modifier(struct event_modifier *mod, char *str,
1308 struct perf_evsel *evsel)
1309{
1310 int eu = evsel ? evsel->attr.exclude_user : 0;
1311 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1312 int eh = evsel ? evsel->attr.exclude_hv : 0;
1313 int eH = evsel ? evsel->attr.exclude_host : 0;
1314 int eG = evsel ? evsel->attr.exclude_guest : 0;
1315 int eI = evsel ? evsel->attr.exclude_idle : 0;
1316 int precise = evsel ? evsel->attr.precise_ip : 0;
1317 int precise_max = 0;
1318 int sample_read = 0;
1319 int pinned = evsel ? evsel->attr.pinned : 0;
1320
1321 int exclude = eu | ek | eh;
1322 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1323
1324 memset(mod, 0, sizeof(*mod));
1325
1326 while (*str) {
1327 if (*str == 'u') {
1328 if (!exclude)
1329 exclude = eu = ek = eh = 1;
1330 eu = 0;
1331 } else if (*str == 'k') {
1332 if (!exclude)
1333 exclude = eu = ek = eh = 1;
1334 ek = 0;
1335 } else if (*str == 'h') {
1336 if (!exclude)
1337 exclude = eu = ek = eh = 1;
1338 eh = 0;
1339 } else if (*str == 'G') {
1340 if (!exclude_GH)
1341 exclude_GH = eG = eH = 1;
1342 eG = 0;
1343 } else if (*str == 'H') {
1344 if (!exclude_GH)
1345 exclude_GH = eG = eH = 1;
1346 eH = 0;
1347 } else if (*str == 'I') {
1348 eI = 1;
1349 } else if (*str == 'p') {
1350 precise++;
1351 /* use of precise requires exclude_guest */
1352 if (!exclude_GH)
1353 eG = 1;
1354 } else if (*str == 'P') {
1355 precise_max = 1;
1356 } else if (*str == 'S') {
1357 sample_read = 1;
1358 } else if (*str == 'D') {
1359 pinned = 1;
1360 } else
1361 break;
1362
1363 ++str;
1364 }
1365
1366 /*
1367 * precise ip:
1368 *
1369 * 0 - SAMPLE_IP can have arbitrary skid
1370 * 1 - SAMPLE_IP must have constant skid
1371 * 2 - SAMPLE_IP requested to have 0 skid
1372 * 3 - SAMPLE_IP must have 0 skid
1373 *
1374 * See also PERF_RECORD_MISC_EXACT_IP
1375 */
1376 if (precise > 3)
1377 return -EINVAL;
1378
1379 mod->eu = eu;
1380 mod->ek = ek;
1381 mod->eh = eh;
1382 mod->eH = eH;
1383 mod->eG = eG;
1384 mod->eI = eI;
1385 mod->precise = precise;
1386 mod->precise_max = precise_max;
1387 mod->exclude_GH = exclude_GH;
1388 mod->sample_read = sample_read;
1389 mod->pinned = pinned;
1390
1391 return 0;
1392}
1393
1394/*
1395 * Basic modifier sanity check to validate it contains only one
1396 * instance of any modifier (apart from 'p') present.
1397 */
1398static int check_modifier(char *str)
1399{
1400 char *p = str;
1401
1402 /* The sizeof includes 0 byte as well. */
1403 if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
1404 return -1;
1405
1406 while (*p) {
1407 if (*p != 'p' && strchr(p + 1, *p))
1408 return -1;
1409 p++;
1410 }
1411
1412 return 0;
1413}
1414
1415int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1416{
1417 struct perf_evsel *evsel;
1418 struct event_modifier mod;
1419
1420 if (str == NULL)
1421 return 0;
1422
1423 if (check_modifier(str))
1424 return -EINVAL;
1425
1426 if (!add && get_event_modifier(&mod, str, NULL))
1427 return -EINVAL;
1428
1429 __evlist__for_each_entry(list, evsel) {
1430 if (add && get_event_modifier(&mod, str, evsel))
1431 return -EINVAL;
1432
1433 evsel->attr.exclude_user = mod.eu;
1434 evsel->attr.exclude_kernel = mod.ek;
1435 evsel->attr.exclude_hv = mod.eh;
1436 evsel->attr.precise_ip = mod.precise;
1437 evsel->attr.exclude_host = mod.eH;
1438 evsel->attr.exclude_guest = mod.eG;
1439 evsel->attr.exclude_idle = mod.eI;
1440 evsel->exclude_GH = mod.exclude_GH;
1441 evsel->sample_read = mod.sample_read;
1442 evsel->precise_max = mod.precise_max;
1443
1444 if (perf_evsel__is_group_leader(evsel))
1445 evsel->attr.pinned = mod.pinned;
1446 }
1447
1448 return 0;
1449}
1450
1451int parse_events_name(struct list_head *list, char *name)
1452{
1453 struct perf_evsel *evsel;
1454
1455 __evlist__for_each_entry(list, evsel) {
1456 if (!evsel->name)
1457 evsel->name = strdup(name);
1458 }
1459
1460 return 0;
1461}
1462
1463static int
1464comp_pmu(const void *p1, const void *p2)
1465{
1466 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1467 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1468
1469 return strcasecmp(pmu1->symbol, pmu2->symbol);
1470}
1471
1472static void perf_pmu__parse_cleanup(void)
1473{
1474 if (perf_pmu_events_list_num > 0) {
1475 struct perf_pmu_event_symbol *p;
1476 int i;
1477
1478 for (i = 0; i < perf_pmu_events_list_num; i++) {
1479 p = perf_pmu_events_list + i;
1480 free(p->symbol);
1481 }
1482 free(perf_pmu_events_list);
1483 perf_pmu_events_list = NULL;
1484 perf_pmu_events_list_num = 0;
1485 }
1486}
1487
1488#define SET_SYMBOL(str, stype) \
1489do { \
1490 p->symbol = str; \
1491 if (!p->symbol) \
1492 goto err; \
1493 p->type = stype; \
1494} while (0)
1495
1496/*
1497 * Read the pmu events list from sysfs
1498 * Save it into perf_pmu_events_list
1499 */
1500static void perf_pmu__parse_init(void)
1501{
1502
1503 struct perf_pmu *pmu = NULL;
1504 struct perf_pmu_alias *alias;
1505 int len = 0;
1506
1507 pmu = perf_pmu__find("cpu");
1508 if ((pmu == NULL) || list_empty(&pmu->aliases)) {
1509 perf_pmu_events_list_num = -1;
1510 return;
1511 }
1512 list_for_each_entry(alias, &pmu->aliases, list) {
1513 if (strchr(alias->name, '-'))
1514 len++;
1515 len++;
1516 }
1517 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1518 if (!perf_pmu_events_list)
1519 return;
1520 perf_pmu_events_list_num = len;
1521
1522 len = 0;
1523 list_for_each_entry(alias, &pmu->aliases, list) {
1524 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1525 char *tmp = strchr(alias->name, '-');
1526
1527 if (tmp != NULL) {
1528 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1529 PMU_EVENT_SYMBOL_PREFIX);
1530 p++;
1531 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1532 len += 2;
1533 } else {
1534 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1535 len++;
1536 }
1537 }
1538 qsort(perf_pmu_events_list, len,
1539 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1540
1541 return;
1542err:
1543 perf_pmu__parse_cleanup();
1544}
1545
1546enum perf_pmu_event_symbol_type
1547perf_pmu__parse_check(const char *name)
1548{
1549 struct perf_pmu_event_symbol p, *r;
1550
1551 /* scan kernel pmu events from sysfs if needed */
1552 if (perf_pmu_events_list_num == 0)
1553 perf_pmu__parse_init();
1554 /*
1555 * name "cpu" could be prefix of cpu-cycles or cpu// events.
1556 * cpu-cycles has been handled by hardcode.
1557 * So it must be cpu// events, not kernel pmu event.
1558 */
1559 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1560 return PMU_EVENT_SYMBOL_ERR;
1561
1562 p.symbol = strdup(name);
1563 r = bsearch(&p, perf_pmu_events_list,
1564 (size_t) perf_pmu_events_list_num,
1565 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1566 free(p.symbol);
1567 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1568}
1569
1570static int parse_events__scanner(const char *str, void *data, int start_token)
1571{
1572 YY_BUFFER_STATE buffer;
1573 void *scanner;
1574 int ret;
1575
1576 ret = parse_events_lex_init_extra(start_token, &scanner);
1577 if (ret)
1578 return ret;
1579
1580 buffer = parse_events__scan_string(str, scanner);
1581
1582#ifdef PARSER_DEBUG
1583 parse_events_debug = 1;
1584#endif
1585 ret = parse_events_parse(data, scanner);
1586
1587 parse_events__flush_buffer(buffer, scanner);
1588 parse_events__delete_buffer(buffer, scanner);
1589 parse_events_lex_destroy(scanner);
1590 return ret;
1591}
1592
1593/*
1594 * parse event config string, return a list of event terms.
1595 */
1596int parse_events_terms(struct list_head *terms, const char *str)
1597{
1598 struct parse_events_terms data = {
1599 .terms = NULL,
1600 };
1601 int ret;
1602
1603 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1604 if (!ret) {
1605 list_splice(data.terms, terms);
1606 zfree(&data.terms);
1607 return 0;
1608 }
1609
1610 parse_events_terms__delete(data.terms);
1611 return ret;
1612}
1613
1614int parse_events(struct perf_evlist *evlist, const char *str,
1615 struct parse_events_error *err)
1616{
1617 struct parse_events_evlist data = {
1618 .list = LIST_HEAD_INIT(data.list),
1619 .idx = evlist->nr_entries,
1620 .error = err,
1621 .evlist = evlist,
1622 };
1623 int ret;
1624
1625 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1626 perf_pmu__parse_cleanup();
1627 if (!ret) {
1628 struct perf_evsel *last;
1629
1630 if (list_empty(&data.list)) {
1631 WARN_ONCE(true, "WARNING: event parser found nothing");
1632 return -1;
1633 }
1634
1635 perf_evlist__splice_list_tail(evlist, &data.list);
1636 evlist->nr_groups += data.nr_groups;
1637 last = perf_evlist__last(evlist);
1638 last->cmdline_group_boundary = true;
1639
1640 return 0;
1641 }
1642
1643 /*
1644 * There are 2 users - builtin-record and builtin-test objects.
1645 * Both call perf_evlist__delete in case of error, so we dont
1646 * need to bother.
1647 */
1648 return ret;
1649}
1650
1651#define MAX_WIDTH 1000
1652static int get_term_width(void)
1653{
1654 struct winsize ws;
1655
1656 get_term_dimensions(&ws);
1657 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1658}
1659
1660static void parse_events_print_error(struct parse_events_error *err,
1661 const char *event)
1662{
1663 const char *str = "invalid or unsupported event: ";
1664 char _buf[MAX_WIDTH];
1665 char *buf = (char *) event;
1666 int idx = 0;
1667
1668 if (err->str) {
1669 /* -2 for extra '' in the final fprintf */
1670 int width = get_term_width() - 2;
1671 int len_event = strlen(event);
1672 int len_str, max_len, cut = 0;
1673
1674 /*
1675 * Maximum error index indent, we will cut
1676 * the event string if it's bigger.
1677 */
1678 int max_err_idx = 13;
1679
1680 /*
1681 * Let's be specific with the message when
1682 * we have the precise error.
1683 */
1684 str = "event syntax error: ";
1685 len_str = strlen(str);
1686 max_len = width - len_str;
1687
1688 buf = _buf;
1689
1690 /* We're cutting from the beginning. */
1691 if (err->idx > max_err_idx)
1692 cut = err->idx - max_err_idx;
1693
1694 strncpy(buf, event + cut, max_len);
1695
1696 /* Mark cut parts with '..' on both sides. */
1697 if (cut)
1698 buf[0] = buf[1] = '.';
1699
1700 if ((len_event - cut) > max_len) {
1701 buf[max_len - 1] = buf[max_len - 2] = '.';
1702 buf[max_len] = 0;
1703 }
1704
1705 idx = len_str + err->idx - cut;
1706 }
1707
1708 fprintf(stderr, "%s'%s'\n", str, buf);
1709 if (idx) {
1710 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1711 if (err->help)
1712 fprintf(stderr, "\n%s\n", err->help);
1713 free(err->str);
1714 free(err->help);
1715 }
1716
1717 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1718}
1719
1720#undef MAX_WIDTH
1721
1722int parse_events_option(const struct option *opt, const char *str,
1723 int unset __maybe_unused)
1724{
1725 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1726 struct parse_events_error err = { .idx = 0, };
1727 int ret = parse_events(evlist, str, &err);
1728
1729 if (ret)
1730 parse_events_print_error(&err, str);
1731
1732 return ret;
1733}
1734
1735static int
1736foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1737 int (*func)(struct perf_evsel *evsel,
1738 const void *arg),
1739 const void *arg)
1740{
1741 struct perf_evsel *last = NULL;
1742 int err;
1743
1744 /*
1745 * Don't return when list_empty, give func a chance to report
1746 * error when it found last == NULL.
1747 *
1748 * So no need to WARN here, let *func do this.
1749 */
1750 if (evlist->nr_entries > 0)
1751 last = perf_evlist__last(evlist);
1752
1753 do {
1754 err = (*func)(last, arg);
1755 if (err)
1756 return -1;
1757 if (!last)
1758 return 0;
1759
1760 if (last->node.prev == &evlist->entries)
1761 return 0;
1762 last = list_entry(last->node.prev, struct perf_evsel, node);
1763 } while (!last->cmdline_group_boundary);
1764
1765 return 0;
1766}
1767
1768static int set_filter(struct perf_evsel *evsel, const void *arg)
1769{
1770 const char *str = arg;
1771 bool found = false;
1772 int nr_addr_filters = 0;
1773 struct perf_pmu *pmu = NULL;
1774
1775 if (evsel == NULL)
1776 goto err;
1777
1778 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1779 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
1780 fprintf(stderr,
1781 "not enough memory to hold filter string\n");
1782 return -1;
1783 }
1784
1785 return 0;
1786 }
1787
1788 while ((pmu = perf_pmu__scan(pmu)) != NULL)
1789 if (pmu->type == evsel->attr.type) {
1790 found = true;
1791 break;
1792 }
1793
1794 if (found)
1795 perf_pmu__scan_file(pmu, "nr_addr_filters",
1796 "%d", &nr_addr_filters);
1797
1798 if (!nr_addr_filters)
1799 goto err;
1800
1801 if (perf_evsel__append_addr_filter(evsel, str) < 0) {
1802 fprintf(stderr,
1803 "not enough memory to hold filter string\n");
1804 return -1;
1805 }
1806
1807 return 0;
1808
1809err:
1810 fprintf(stderr,
1811 "--filter option should follow a -e tracepoint or HW tracer option\n");
1812
1813 return -1;
1814}
1815
1816int parse_filter(const struct option *opt, const char *str,
1817 int unset __maybe_unused)
1818{
1819 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1820
1821 return foreach_evsel_in_last_glob(evlist, set_filter,
1822 (const void *)str);
1823}
1824
1825static int add_exclude_perf_filter(struct perf_evsel *evsel,
1826 const void *arg __maybe_unused)
1827{
1828 char new_filter[64];
1829
1830 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1831 fprintf(stderr,
1832 "--exclude-perf option should follow a -e tracepoint option\n");
1833 return -1;
1834 }
1835
1836 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1837
1838 if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
1839 fprintf(stderr,
1840 "not enough memory to hold filter string\n");
1841 return -1;
1842 }
1843
1844 return 0;
1845}
1846
1847int exclude_perf(const struct option *opt,
1848 const char *arg __maybe_unused,
1849 int unset __maybe_unused)
1850{
1851 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1852
1853 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1854 NULL);
1855}
1856
1857static const char * const event_type_descriptors[] = {
1858 "Hardware event",
1859 "Software event",
1860 "Tracepoint event",
1861 "Hardware cache event",
1862 "Raw hardware event descriptor",
1863 "Hardware breakpoint",
1864};
1865
1866static int cmp_string(const void *a, const void *b)
1867{
1868 const char * const *as = a;
1869 const char * const *bs = b;
1870
1871 return strcmp(*as, *bs);
1872}
1873
1874/*
1875 * Print the events from <debugfs_mount_point>/tracing/events
1876 */
1877
1878void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1879 bool name_only)
1880{
1881 DIR *sys_dir, *evt_dir;
1882 struct dirent *sys_dirent, *evt_dirent;
1883 char evt_path[MAXPATHLEN];
1884 char dir_path[MAXPATHLEN];
1885 char **evt_list = NULL;
1886 unsigned int evt_i = 0, evt_num = 0;
1887 bool evt_num_known = false;
1888
1889restart:
1890 sys_dir = opendir(tracing_events_path);
1891 if (!sys_dir)
1892 return;
1893
1894 if (evt_num_known) {
1895 evt_list = zalloc(sizeof(char *) * evt_num);
1896 if (!evt_list)
1897 goto out_close_sys_dir;
1898 }
1899
1900 for_each_subsystem(sys_dir, sys_dirent) {
1901 if (subsys_glob != NULL &&
1902 !strglobmatch(sys_dirent->d_name, subsys_glob))
1903 continue;
1904
1905 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1906 sys_dirent->d_name);
1907 evt_dir = opendir(dir_path);
1908 if (!evt_dir)
1909 continue;
1910
1911 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1912 if (event_glob != NULL &&
1913 !strglobmatch(evt_dirent->d_name, event_glob))
1914 continue;
1915
1916 if (!evt_num_known) {
1917 evt_num++;
1918 continue;
1919 }
1920
1921 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1922 sys_dirent->d_name, evt_dirent->d_name);
1923
1924 evt_list[evt_i] = strdup(evt_path);
1925 if (evt_list[evt_i] == NULL)
1926 goto out_close_evt_dir;
1927 evt_i++;
1928 }
1929 closedir(evt_dir);
1930 }
1931 closedir(sys_dir);
1932
1933 if (!evt_num_known) {
1934 evt_num_known = true;
1935 goto restart;
1936 }
1937 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1938 evt_i = 0;
1939 while (evt_i < evt_num) {
1940 if (name_only) {
1941 printf("%s ", evt_list[evt_i++]);
1942 continue;
1943 }
1944 printf(" %-50s [%s]\n", evt_list[evt_i++],
1945 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1946 }
1947 if (evt_num && pager_in_use())
1948 printf("\n");
1949
1950out_free:
1951 evt_num = evt_i;
1952 for (evt_i = 0; evt_i < evt_num; evt_i++)
1953 zfree(&evt_list[evt_i]);
1954 zfree(&evt_list);
1955 return;
1956
1957out_close_evt_dir:
1958 closedir(evt_dir);
1959out_close_sys_dir:
1960 closedir(sys_dir);
1961
1962 printf("FATAL: not enough memory to print %s\n",
1963 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1964 if (evt_list)
1965 goto out_free;
1966}
1967
1968/*
1969 * Check whether event is in <debugfs_mount_point>/tracing/events
1970 */
1971
1972int is_valid_tracepoint(const char *event_string)
1973{
1974 DIR *sys_dir, *evt_dir;
1975 struct dirent *sys_dirent, *evt_dirent;
1976 char evt_path[MAXPATHLEN];
1977 char dir_path[MAXPATHLEN];
1978
1979 sys_dir = opendir(tracing_events_path);
1980 if (!sys_dir)
1981 return 0;
1982
1983 for_each_subsystem(sys_dir, sys_dirent) {
1984
1985 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1986 sys_dirent->d_name);
1987 evt_dir = opendir(dir_path);
1988 if (!evt_dir)
1989 continue;
1990
1991 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1992 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1993 sys_dirent->d_name, evt_dirent->d_name);
1994 if (!strcmp(evt_path, event_string)) {
1995 closedir(evt_dir);
1996 closedir(sys_dir);
1997 return 1;
1998 }
1999 }
2000 closedir(evt_dir);
2001 }
2002 closedir(sys_dir);
2003 return 0;
2004}
2005
2006static bool is_event_supported(u8 type, unsigned config)
2007{
2008 bool ret = true;
2009 int open_return;
2010 struct perf_evsel *evsel;
2011 struct perf_event_attr attr = {
2012 .type = type,
2013 .config = config,
2014 .disabled = 1,
2015 };
2016 struct {
2017 struct thread_map map;
2018 int threads[1];
2019 } tmap = {
2020 .map.nr = 1,
2021 .threads = { 0 },
2022 };
2023
2024 evsel = perf_evsel__new(&attr);
2025 if (evsel) {
2026 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
2027 ret = open_return >= 0;
2028
2029 if (open_return == -EACCES) {
2030 /*
2031 * This happens if the paranoid value
2032 * /proc/sys/kernel/perf_event_paranoid is set to 2
2033 * Re-run with exclude_kernel set; we don't do that
2034 * by default as some ARM machines do not support it.
2035 *
2036 */
2037 evsel->attr.exclude_kernel = 1;
2038 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
2039 }
2040 perf_evsel__delete(evsel);
2041 }
2042
2043 return ret;
2044}
2045
2046void print_sdt_events(const char *subsys_glob, const char *event_glob,
2047 bool name_only)
2048{
2049 struct probe_cache *pcache;
2050 struct probe_cache_entry *ent;
2051 struct strlist *bidlist, *sdtlist;
2052 struct strlist_config cfg = {.dont_dupstr = true};
2053 struct str_node *nd, *nd2;
2054 char *buf, *path, *ptr = NULL;
2055 bool show_detail = false;
2056 int ret;
2057
2058 sdtlist = strlist__new(NULL, &cfg);
2059 if (!sdtlist) {
2060 pr_debug("Failed to allocate new strlist for SDT\n");
2061 return;
2062 }
2063 bidlist = build_id_cache__list_all(true);
2064 if (!bidlist) {
2065 pr_debug("Failed to get buildids: %d\n", errno);
2066 return;
2067 }
2068 strlist__for_each_entry(nd, bidlist) {
2069 pcache = probe_cache__new(nd->s);
2070 if (!pcache)
2071 continue;
2072 list_for_each_entry(ent, &pcache->entries, node) {
2073 if (!ent->sdt)
2074 continue;
2075 if (subsys_glob &&
2076 !strglobmatch(ent->pev.group, subsys_glob))
2077 continue;
2078 if (event_glob &&
2079 !strglobmatch(ent->pev.event, event_glob))
2080 continue;
2081 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2082 ent->pev.event, nd->s);
2083 if (ret > 0)
2084 strlist__add(sdtlist, buf);
2085 }
2086 probe_cache__delete(pcache);
2087 }
2088 strlist__delete(bidlist);
2089
2090 strlist__for_each_entry(nd, sdtlist) {
2091 buf = strchr(nd->s, '@');
2092 if (buf)
2093 *(buf++) = '\0';
2094 if (name_only) {
2095 printf("%s ", nd->s);
2096 continue;
2097 }
2098 nd2 = strlist__next(nd);
2099 if (nd2) {
2100 ptr = strchr(nd2->s, '@');
2101 if (ptr)
2102 *ptr = '\0';
2103 if (strcmp(nd->s, nd2->s) == 0)
2104 show_detail = true;
2105 }
2106 if (show_detail) {
2107 path = build_id_cache__origname(buf);
2108 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2109 if (ret > 0) {
2110 printf(" %-50s [%s]\n", buf, "SDT event");
2111 free(buf);
2112 }
2113 } else
2114 printf(" %-50s [%s]\n", nd->s, "SDT event");
2115 if (nd2) {
2116 if (strcmp(nd->s, nd2->s) != 0)
2117 show_detail = false;
2118 if (ptr)
2119 *ptr = '@';
2120 }
2121 }
2122 strlist__delete(sdtlist);
2123}
2124
2125int print_hwcache_events(const char *event_glob, bool name_only)
2126{
2127 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2128 char name[64];
2129 char **evt_list = NULL;
2130 bool evt_num_known = false;
2131
2132restart:
2133 if (evt_num_known) {
2134 evt_list = zalloc(sizeof(char *) * evt_num);
2135 if (!evt_list)
2136 goto out_enomem;
2137 }
2138
2139 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2140 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2141 /* skip invalid cache type */
2142 if (!perf_evsel__is_cache_op_valid(type, op))
2143 continue;
2144
2145 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2146 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2147 name, sizeof(name));
2148 if (event_glob != NULL && !strglobmatch(name, event_glob))
2149 continue;
2150
2151 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2152 type | (op << 8) | (i << 16)))
2153 continue;
2154
2155 if (!evt_num_known) {
2156 evt_num++;
2157 continue;
2158 }
2159
2160 evt_list[evt_i] = strdup(name);
2161 if (evt_list[evt_i] == NULL)
2162 goto out_enomem;
2163 evt_i++;
2164 }
2165 }
2166 }
2167
2168 if (!evt_num_known) {
2169 evt_num_known = true;
2170 goto restart;
2171 }
2172 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2173 evt_i = 0;
2174 while (evt_i < evt_num) {
2175 if (name_only) {
2176 printf("%s ", evt_list[evt_i++]);
2177 continue;
2178 }
2179 printf(" %-50s [%s]\n", evt_list[evt_i++],
2180 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2181 }
2182 if (evt_num && pager_in_use())
2183 printf("\n");
2184
2185out_free:
2186 evt_num = evt_i;
2187 for (evt_i = 0; evt_i < evt_num; evt_i++)
2188 zfree(&evt_list[evt_i]);
2189 zfree(&evt_list);
2190 return evt_num;
2191
2192out_enomem:
2193 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2194 if (evt_list)
2195 goto out_free;
2196 return evt_num;
2197}
2198
2199void print_symbol_events(const char *event_glob, unsigned type,
2200 struct event_symbol *syms, unsigned max,
2201 bool name_only)
2202{
2203 unsigned int i, evt_i = 0, evt_num = 0;
2204 char name[MAX_NAME_LEN];
2205 char **evt_list = NULL;
2206 bool evt_num_known = false;
2207
2208restart:
2209 if (evt_num_known) {
2210 evt_list = zalloc(sizeof(char *) * evt_num);
2211 if (!evt_list)
2212 goto out_enomem;
2213 syms -= max;
2214 }
2215
2216 for (i = 0; i < max; i++, syms++) {
2217
2218 if (event_glob != NULL && syms->symbol != NULL &&
2219 !(strglobmatch(syms->symbol, event_glob) ||
2220 (syms->alias && strglobmatch(syms->alias, event_glob))))
2221 continue;
2222
2223 if (!is_event_supported(type, i))
2224 continue;
2225
2226 if (!evt_num_known) {
2227 evt_num++;
2228 continue;
2229 }
2230
2231 if (!name_only && strlen(syms->alias))
2232 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2233 else
2234 strncpy(name, syms->symbol, MAX_NAME_LEN);
2235
2236 evt_list[evt_i] = strdup(name);
2237 if (evt_list[evt_i] == NULL)
2238 goto out_enomem;
2239 evt_i++;
2240 }
2241
2242 if (!evt_num_known) {
2243 evt_num_known = true;
2244 goto restart;
2245 }
2246 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2247 evt_i = 0;
2248 while (evt_i < evt_num) {
2249 if (name_only) {
2250 printf("%s ", evt_list[evt_i++]);
2251 continue;
2252 }
2253 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2254 }
2255 if (evt_num && pager_in_use())
2256 printf("\n");
2257
2258out_free:
2259 evt_num = evt_i;
2260 for (evt_i = 0; evt_i < evt_num; evt_i++)
2261 zfree(&evt_list[evt_i]);
2262 zfree(&evt_list);
2263 return;
2264
2265out_enomem:
2266 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2267 if (evt_list)
2268 goto out_free;
2269}
2270
2271/*
2272 * Print the help text for the event symbols:
2273 */
2274void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2275 bool long_desc)
2276{
2277 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2278 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2279
2280 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2281 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2282
2283 print_hwcache_events(event_glob, name_only);
2284
2285 print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
2286
2287 if (event_glob != NULL)
2288 return;
2289
2290 if (!name_only) {
2291 printf(" %-50s [%s]\n",
2292 "rNNN",
2293 event_type_descriptors[PERF_TYPE_RAW]);
2294 printf(" %-50s [%s]\n",
2295 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2296 event_type_descriptors[PERF_TYPE_RAW]);
2297 if (pager_in_use())
2298 printf(" (see 'man perf-list' on how to encode it)\n\n");
2299
2300 printf(" %-50s [%s]\n",
2301 "mem:<addr>[/len][:access]",
2302 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2303 if (pager_in_use())
2304 printf("\n");
2305 }
2306
2307 print_tracepoint_events(NULL, NULL, name_only);
2308
2309 print_sdt_events(NULL, NULL, name_only);
2310}
2311
2312int parse_events__is_hardcoded_term(struct parse_events_term *term)
2313{
2314 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2315}
2316
2317static int new_term(struct parse_events_term **_term, int type_val,
2318 int type_term, char *config,
2319 char *str, u64 num, int err_term, int err_val)
2320{
2321 struct parse_events_term *term;
2322
2323 term = zalloc(sizeof(*term));
2324 if (!term)
2325 return -ENOMEM;
2326
2327 INIT_LIST_HEAD(&term->list);
2328 term->type_val = type_val;
2329 term->type_term = type_term;
2330 term->config = config;
2331 term->err_term = err_term;
2332 term->err_val = err_val;
2333
2334 switch (type_val) {
2335 case PARSE_EVENTS__TERM_TYPE_NUM:
2336 term->val.num = num;
2337 break;
2338 case PARSE_EVENTS__TERM_TYPE_STR:
2339 term->val.str = str;
2340 break;
2341 default:
2342 free(term);
2343 return -EINVAL;
2344 }
2345
2346 *_term = term;
2347 return 0;
2348}
2349
2350int parse_events_term__num(struct parse_events_term **term,
2351 int type_term, char *config, u64 num,
2352 void *loc_term_, void *loc_val_)
2353{
2354 YYLTYPE *loc_term = loc_term_;
2355 YYLTYPE *loc_val = loc_val_;
2356
2357 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
2358 config, NULL, num,
2359 loc_term ? loc_term->first_column : 0,
2360 loc_val ? loc_val->first_column : 0);
2361}
2362
2363int parse_events_term__str(struct parse_events_term **term,
2364 int type_term, char *config, char *str,
2365 void *loc_term_, void *loc_val_)
2366{
2367 YYLTYPE *loc_term = loc_term_;
2368 YYLTYPE *loc_val = loc_val_;
2369
2370 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
2371 config, str, 0,
2372 loc_term ? loc_term->first_column : 0,
2373 loc_val ? loc_val->first_column : 0);
2374}
2375
2376int parse_events_term__sym_hw(struct parse_events_term **term,
2377 char *config, unsigned idx)
2378{
2379 struct event_symbol *sym;
2380
2381 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2382 sym = &event_symbols_hw[idx];
2383
2384 if (config)
2385 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2386 PARSE_EVENTS__TERM_TYPE_USER, config,
2387 (char *) sym->symbol, 0, 0, 0);
2388 else
2389 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2390 PARSE_EVENTS__TERM_TYPE_USER,
2391 (char *) "event", (char *) sym->symbol,
2392 0, 0, 0);
2393}
2394
2395int parse_events_term__clone(struct parse_events_term **new,
2396 struct parse_events_term *term)
2397{
2398 return new_term(new, term->type_val, term->type_term, term->config,
2399 term->val.str, term->val.num,
2400 term->err_term, term->err_val);
2401}
2402
2403void parse_events_terms__purge(struct list_head *terms)
2404{
2405 struct parse_events_term *term, *h;
2406
2407 list_for_each_entry_safe(term, h, terms, list) {
2408 if (term->array.nr_ranges)
2409 free(term->array.ranges);
2410 list_del_init(&term->list);
2411 free(term);
2412 }
2413}
2414
2415void parse_events_terms__delete(struct list_head *terms)
2416{
2417 if (!terms)
2418 return;
2419 parse_events_terms__purge(terms);
2420 free(terms);
2421}
2422
2423void parse_events__clear_array(struct parse_events_array *a)
2424{
2425 free(a->ranges);
2426}
2427
2428void parse_events_evlist_error(struct parse_events_evlist *data,
2429 int idx, const char *str)
2430{
2431 struct parse_events_error *err = data->error;
2432
2433 if (!err)
2434 return;
2435 err->idx = idx;
2436 err->str = strdup(str);
2437 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2438}
2439
2440static void config_terms_list(char *buf, size_t buf_sz)
2441{
2442 int i;
2443 bool first = true;
2444
2445 buf[0] = '\0';
2446 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2447 const char *name = config_term_names[i];
2448
2449 if (!config_term_avail(i, NULL))
2450 continue;
2451 if (!name)
2452 continue;
2453 if (name[0] == '<')
2454 continue;
2455
2456 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2457 return;
2458
2459 if (!first)
2460 strcat(buf, ",");
2461 else
2462 first = false;
2463 strcat(buf, name);
2464 }
2465}
2466
2467/*
2468 * Return string contains valid config terms of an event.
2469 * @additional_terms: For terms such as PMU sysfs terms.
2470 */
2471char *parse_events_formats_error_string(char *additional_terms)
2472{
2473 char *str;
2474 /* "no-overwrite" is the longest name */
2475 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2476 (sizeof("no-overwrite") - 1)];
2477
2478 config_terms_list(static_terms, sizeof(static_terms));
2479 /* valid terms */
2480 if (additional_terms) {
2481 if (asprintf(&str, "valid terms: %s,%s",
2482 additional_terms, static_terms) < 0)
2483 goto fail;
2484 } else {
2485 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2486 goto fail;
2487 }
2488 return str;
2489
2490fail:
2491 return NULL;
2492}