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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 "../../../include/linux/hw_breakpoint.h"
2#include "util.h"
3#include "../perf.h"
4#include "evlist.h"
5#include "evsel.h"
6#include "parse-options.h"
7#include "parse-events.h"
8#include "exec_cmd.h"
9#include "string.h"
10#include "symbol.h"
11#include "cache.h"
12#include "header.h"
13#include "debugfs.h"
14#include "parse-events-flex.h"
15#include "pmu.h"
16
17#define MAX_NAME_LEN 100
18
19struct event_symbol {
20 u8 type;
21 u64 config;
22 const char *symbol;
23 const char *alias;
24};
25
26#ifdef PARSER_DEBUG
27extern int parse_events_debug;
28#endif
29int parse_events_parse(struct list_head *list, int *idx);
30
31#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
32#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
33
34static struct event_symbol event_symbols[] = {
35 { CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
36 { CHW(STALLED_CYCLES_FRONTEND), "stalled-cycles-frontend", "idle-cycles-frontend" },
37 { CHW(STALLED_CYCLES_BACKEND), "stalled-cycles-backend", "idle-cycles-backend" },
38 { CHW(INSTRUCTIONS), "instructions", "" },
39 { CHW(CACHE_REFERENCES), "cache-references", "" },
40 { CHW(CACHE_MISSES), "cache-misses", "" },
41 { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
42 { CHW(BRANCH_MISSES), "branch-misses", "" },
43 { CHW(BUS_CYCLES), "bus-cycles", "" },
44 { CHW(REF_CPU_CYCLES), "ref-cycles", "" },
45
46 { CSW(CPU_CLOCK), "cpu-clock", "" },
47 { CSW(TASK_CLOCK), "task-clock", "" },
48 { CSW(PAGE_FAULTS), "page-faults", "faults" },
49 { CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
50 { CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
51 { CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
52 { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
53 { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
54 { CSW(EMULATION_FAULTS), "emulation-faults", "" },
55};
56
57#define __PERF_EVENT_FIELD(config, name) \
58 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
59
60#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
61#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
62#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
63#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
64
65static const char *sw_event_names[PERF_COUNT_SW_MAX] = {
66 "cpu-clock",
67 "task-clock",
68 "page-faults",
69 "context-switches",
70 "CPU-migrations",
71 "minor-faults",
72 "major-faults",
73 "alignment-faults",
74 "emulation-faults",
75};
76
77#define MAX_ALIASES 8
78
79static const char *hw_cache[PERF_COUNT_HW_CACHE_MAX][MAX_ALIASES] = {
80 { "L1-dcache", "l1-d", "l1d", "L1-data", },
81 { "L1-icache", "l1-i", "l1i", "L1-instruction", },
82 { "LLC", "L2", },
83 { "dTLB", "d-tlb", "Data-TLB", },
84 { "iTLB", "i-tlb", "Instruction-TLB", },
85 { "branch", "branches", "bpu", "btb", "bpc", },
86 { "node", },
87};
88
89static const char *hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][MAX_ALIASES] = {
90 { "load", "loads", "read", },
91 { "store", "stores", "write", },
92 { "prefetch", "prefetches", "speculative-read", "speculative-load", },
93};
94
95static const char *hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
96 [MAX_ALIASES] = {
97 { "refs", "Reference", "ops", "access", },
98 { "misses", "miss", },
99};
100
101#define C(x) PERF_COUNT_HW_CACHE_##x
102#define CACHE_READ (1 << C(OP_READ))
103#define CACHE_WRITE (1 << C(OP_WRITE))
104#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
105#define COP(x) (1 << x)
106
107/*
108 * cache operartion stat
109 * L1I : Read and prefetch only
110 * ITLB and BPU : Read-only
111 */
112static unsigned long hw_cache_stat[C(MAX)] = {
113 [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
114 [C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
115 [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
116 [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
117 [C(ITLB)] = (CACHE_READ),
118 [C(BPU)] = (CACHE_READ),
119 [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
120};
121
122#define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
123 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
124 if (sys_dirent.d_type == DT_DIR && \
125 (strcmp(sys_dirent.d_name, ".")) && \
126 (strcmp(sys_dirent.d_name, "..")))
127
128static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
129{
130 char evt_path[MAXPATHLEN];
131 int fd;
132
133 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
134 sys_dir->d_name, evt_dir->d_name);
135 fd = open(evt_path, O_RDONLY);
136 if (fd < 0)
137 return -EINVAL;
138 close(fd);
139
140 return 0;
141}
142
143#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
144 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
145 if (evt_dirent.d_type == DT_DIR && \
146 (strcmp(evt_dirent.d_name, ".")) && \
147 (strcmp(evt_dirent.d_name, "..")) && \
148 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
149
150#define MAX_EVENT_LENGTH 512
151
152
153struct tracepoint_path *tracepoint_id_to_path(u64 config)
154{
155 struct tracepoint_path *path = NULL;
156 DIR *sys_dir, *evt_dir;
157 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
158 char id_buf[24];
159 int fd;
160 u64 id;
161 char evt_path[MAXPATHLEN];
162 char dir_path[MAXPATHLEN];
163
164 if (debugfs_valid_mountpoint(tracing_events_path))
165 return NULL;
166
167 sys_dir = opendir(tracing_events_path);
168 if (!sys_dir)
169 return NULL;
170
171 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
172
173 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
174 sys_dirent.d_name);
175 evt_dir = opendir(dir_path);
176 if (!evt_dir)
177 continue;
178
179 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
180
181 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
182 evt_dirent.d_name);
183 fd = open(evt_path, O_RDONLY);
184 if (fd < 0)
185 continue;
186 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
187 close(fd);
188 continue;
189 }
190 close(fd);
191 id = atoll(id_buf);
192 if (id == config) {
193 closedir(evt_dir);
194 closedir(sys_dir);
195 path = zalloc(sizeof(*path));
196 path->system = malloc(MAX_EVENT_LENGTH);
197 if (!path->system) {
198 free(path);
199 return NULL;
200 }
201 path->name = malloc(MAX_EVENT_LENGTH);
202 if (!path->name) {
203 free(path->system);
204 free(path);
205 return NULL;
206 }
207 strncpy(path->system, sys_dirent.d_name,
208 MAX_EVENT_LENGTH);
209 strncpy(path->name, evt_dirent.d_name,
210 MAX_EVENT_LENGTH);
211 return path;
212 }
213 }
214 closedir(evt_dir);
215 }
216
217 closedir(sys_dir);
218 return NULL;
219}
220
221#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
222static const char *tracepoint_id_to_name(u64 config)
223{
224 static char buf[TP_PATH_LEN];
225 struct tracepoint_path *path;
226
227 path = tracepoint_id_to_path(config);
228 if (path) {
229 snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
230 free(path->name);
231 free(path->system);
232 free(path);
233 } else
234 snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
235
236 return buf;
237}
238
239static int is_cache_op_valid(u8 cache_type, u8 cache_op)
240{
241 if (hw_cache_stat[cache_type] & COP(cache_op))
242 return 1; /* valid */
243 else
244 return 0; /* invalid */
245}
246
247static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
248{
249 static char name[50];
250
251 if (cache_result) {
252 sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
253 hw_cache_op[cache_op][0],
254 hw_cache_result[cache_result][0]);
255 } else {
256 sprintf(name, "%s-%s", hw_cache[cache_type][0],
257 hw_cache_op[cache_op][1]);
258 }
259
260 return name;
261}
262
263const char *event_type(int type)
264{
265 switch (type) {
266 case PERF_TYPE_HARDWARE:
267 return "hardware";
268
269 case PERF_TYPE_SOFTWARE:
270 return "software";
271
272 case PERF_TYPE_TRACEPOINT:
273 return "tracepoint";
274
275 case PERF_TYPE_HW_CACHE:
276 return "hardware-cache";
277
278 default:
279 break;
280 }
281
282 return "unknown";
283}
284
285const char *event_name(struct perf_evsel *evsel)
286{
287 u64 config = evsel->attr.config;
288 int type = evsel->attr.type;
289
290 if (type == PERF_TYPE_RAW || type == PERF_TYPE_HARDWARE) {
291 /*
292 * XXX minimal fix, see comment on perf_evsen__name, this static buffer
293 * will go away together with event_name in the next devel cycle.
294 */
295 static char bf[128];
296 perf_evsel__name(evsel, bf, sizeof(bf));
297 return bf;
298 }
299
300 if (evsel->name)
301 return evsel->name;
302
303 return __event_name(type, config);
304}
305
306const char *__event_name(int type, u64 config)
307{
308 static char buf[32];
309
310 if (type == PERF_TYPE_RAW) {
311 sprintf(buf, "raw 0x%" PRIx64, config);
312 return buf;
313 }
314
315 switch (type) {
316 case PERF_TYPE_HARDWARE:
317 return __perf_evsel__hw_name(config);
318
319 case PERF_TYPE_HW_CACHE: {
320 u8 cache_type, cache_op, cache_result;
321
322 cache_type = (config >> 0) & 0xff;
323 if (cache_type > PERF_COUNT_HW_CACHE_MAX)
324 return "unknown-ext-hardware-cache-type";
325
326 cache_op = (config >> 8) & 0xff;
327 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
328 return "unknown-ext-hardware-cache-op";
329
330 cache_result = (config >> 16) & 0xff;
331 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
332 return "unknown-ext-hardware-cache-result";
333
334 if (!is_cache_op_valid(cache_type, cache_op))
335 return "invalid-cache";
336
337 return event_cache_name(cache_type, cache_op, cache_result);
338 }
339
340 case PERF_TYPE_SOFTWARE:
341 if (config < PERF_COUNT_SW_MAX && sw_event_names[config])
342 return sw_event_names[config];
343 return "unknown-software";
344
345 case PERF_TYPE_TRACEPOINT:
346 return tracepoint_id_to_name(config);
347
348 default:
349 break;
350 }
351
352 return "unknown";
353}
354
355static int add_event(struct list_head **_list, int *idx,
356 struct perf_event_attr *attr, char *name)
357{
358 struct perf_evsel *evsel;
359 struct list_head *list = *_list;
360
361 if (!list) {
362 list = malloc(sizeof(*list));
363 if (!list)
364 return -ENOMEM;
365 INIT_LIST_HEAD(list);
366 }
367
368 event_attr_init(attr);
369
370 evsel = perf_evsel__new(attr, (*idx)++);
371 if (!evsel) {
372 free(list);
373 return -ENOMEM;
374 }
375
376 evsel->name = strdup(name);
377 list_add_tail(&evsel->node, list);
378 *_list = list;
379 return 0;
380}
381
382static int parse_aliases(char *str, const char *names[][MAX_ALIASES], int size)
383{
384 int i, j;
385 int n, longest = -1;
386
387 for (i = 0; i < size; i++) {
388 for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
389 n = strlen(names[i][j]);
390 if (n > longest && !strncasecmp(str, names[i][j], n))
391 longest = n;
392 }
393 if (longest > 0)
394 return i;
395 }
396
397 return -1;
398}
399
400int parse_events_add_cache(struct list_head **list, int *idx,
401 char *type, char *op_result1, char *op_result2)
402{
403 struct perf_event_attr attr;
404 char name[MAX_NAME_LEN];
405 int cache_type = -1, cache_op = -1, cache_result = -1;
406 char *op_result[2] = { op_result1, op_result2 };
407 int i, n;
408
409 /*
410 * No fallback - if we cannot get a clear cache type
411 * then bail out:
412 */
413 cache_type = parse_aliases(type, hw_cache,
414 PERF_COUNT_HW_CACHE_MAX);
415 if (cache_type == -1)
416 return -EINVAL;
417
418 n = snprintf(name, MAX_NAME_LEN, "%s", type);
419
420 for (i = 0; (i < 2) && (op_result[i]); i++) {
421 char *str = op_result[i];
422
423 snprintf(name + n, MAX_NAME_LEN - n, "-%s\n", str);
424
425 if (cache_op == -1) {
426 cache_op = parse_aliases(str, hw_cache_op,
427 PERF_COUNT_HW_CACHE_OP_MAX);
428 if (cache_op >= 0) {
429 if (!is_cache_op_valid(cache_type, cache_op))
430 return -EINVAL;
431 continue;
432 }
433 }
434
435 if (cache_result == -1) {
436 cache_result = parse_aliases(str, hw_cache_result,
437 PERF_COUNT_HW_CACHE_RESULT_MAX);
438 if (cache_result >= 0)
439 continue;
440 }
441 }
442
443 /*
444 * Fall back to reads:
445 */
446 if (cache_op == -1)
447 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
448
449 /*
450 * Fall back to accesses:
451 */
452 if (cache_result == -1)
453 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
454
455 memset(&attr, 0, sizeof(attr));
456 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
457 attr.type = PERF_TYPE_HW_CACHE;
458 return add_event(list, idx, &attr, name);
459}
460
461static int add_tracepoint(struct list_head **list, int *idx,
462 char *sys_name, char *evt_name)
463{
464 struct perf_event_attr attr;
465 char name[MAX_NAME_LEN];
466 char evt_path[MAXPATHLEN];
467 char id_buf[4];
468 u64 id;
469 int fd;
470
471 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
472 sys_name, evt_name);
473
474 fd = open(evt_path, O_RDONLY);
475 if (fd < 0)
476 return -1;
477
478 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
479 close(fd);
480 return -1;
481 }
482
483 close(fd);
484 id = atoll(id_buf);
485
486 memset(&attr, 0, sizeof(attr));
487 attr.config = id;
488 attr.type = PERF_TYPE_TRACEPOINT;
489 attr.sample_type |= PERF_SAMPLE_RAW;
490 attr.sample_type |= PERF_SAMPLE_TIME;
491 attr.sample_type |= PERF_SAMPLE_CPU;
492 attr.sample_period = 1;
493
494 snprintf(name, MAX_NAME_LEN, "%s:%s", sys_name, evt_name);
495 return add_event(list, idx, &attr, name);
496}
497
498static int add_tracepoint_multi(struct list_head **list, int *idx,
499 char *sys_name, char *evt_name)
500{
501 char evt_path[MAXPATHLEN];
502 struct dirent *evt_ent;
503 DIR *evt_dir;
504 int ret = 0;
505
506 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
507 evt_dir = opendir(evt_path);
508 if (!evt_dir) {
509 perror("Can't open event dir");
510 return -1;
511 }
512
513 while (!ret && (evt_ent = readdir(evt_dir))) {
514 if (!strcmp(evt_ent->d_name, ".")
515 || !strcmp(evt_ent->d_name, "..")
516 || !strcmp(evt_ent->d_name, "enable")
517 || !strcmp(evt_ent->d_name, "filter"))
518 continue;
519
520 if (!strglobmatch(evt_ent->d_name, evt_name))
521 continue;
522
523 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
524 }
525
526 return ret;
527}
528
529int parse_events_add_tracepoint(struct list_head **list, int *idx,
530 char *sys, char *event)
531{
532 int ret;
533
534 ret = debugfs_valid_mountpoint(tracing_events_path);
535 if (ret)
536 return ret;
537
538 return strpbrk(event, "*?") ?
539 add_tracepoint_multi(list, idx, sys, event) :
540 add_tracepoint(list, idx, sys, event);
541}
542
543static int
544parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
545{
546 int i;
547
548 for (i = 0; i < 3; i++) {
549 if (!type || !type[i])
550 break;
551
552 switch (type[i]) {
553 case 'r':
554 attr->bp_type |= HW_BREAKPOINT_R;
555 break;
556 case 'w':
557 attr->bp_type |= HW_BREAKPOINT_W;
558 break;
559 case 'x':
560 attr->bp_type |= HW_BREAKPOINT_X;
561 break;
562 default:
563 return -EINVAL;
564 }
565 }
566
567 if (!attr->bp_type) /* Default */
568 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
569
570 return 0;
571}
572
573int parse_events_add_breakpoint(struct list_head **list, int *idx,
574 void *ptr, char *type)
575{
576 struct perf_event_attr attr;
577 char name[MAX_NAME_LEN];
578
579 memset(&attr, 0, sizeof(attr));
580 attr.bp_addr = (unsigned long) ptr;
581
582 if (parse_breakpoint_type(type, &attr))
583 return -EINVAL;
584
585 /*
586 * We should find a nice way to override the access length
587 * Provide some defaults for now
588 */
589 if (attr.bp_type == HW_BREAKPOINT_X)
590 attr.bp_len = sizeof(long);
591 else
592 attr.bp_len = HW_BREAKPOINT_LEN_4;
593
594 attr.type = PERF_TYPE_BREAKPOINT;
595
596 snprintf(name, MAX_NAME_LEN, "mem:%p:%s", ptr, type ? type : "rw");
597 return add_event(list, idx, &attr, name);
598}
599
600static int config_term(struct perf_event_attr *attr,
601 struct parse_events__term *term)
602{
603#define CHECK_TYPE_VAL(type) \
604do { \
605 if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
606 return -EINVAL; \
607} while (0)
608
609 switch (term->type_term) {
610 case PARSE_EVENTS__TERM_TYPE_CONFIG:
611 CHECK_TYPE_VAL(NUM);
612 attr->config = term->val.num;
613 break;
614 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
615 CHECK_TYPE_VAL(NUM);
616 attr->config1 = term->val.num;
617 break;
618 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
619 CHECK_TYPE_VAL(NUM);
620 attr->config2 = term->val.num;
621 break;
622 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
623 CHECK_TYPE_VAL(NUM);
624 attr->sample_period = term->val.num;
625 break;
626 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
627 /*
628 * TODO uncomment when the field is available
629 * attr->branch_sample_type = term->val.num;
630 */
631 break;
632 case PARSE_EVENTS__TERM_TYPE_NAME:
633 CHECK_TYPE_VAL(STR);
634 break;
635 default:
636 return -EINVAL;
637 }
638
639 return 0;
640#undef CHECK_TYPE_VAL
641}
642
643static int config_attr(struct perf_event_attr *attr,
644 struct list_head *head, int fail)
645{
646 struct parse_events__term *term;
647
648 list_for_each_entry(term, head, list)
649 if (config_term(attr, term) && fail)
650 return -EINVAL;
651
652 return 0;
653}
654
655int parse_events_add_numeric(struct list_head **list, int *idx,
656 unsigned long type, unsigned long config,
657 struct list_head *head_config)
658{
659 struct perf_event_attr attr;
660
661 memset(&attr, 0, sizeof(attr));
662 attr.type = type;
663 attr.config = config;
664
665 if (head_config &&
666 config_attr(&attr, head_config, 1))
667 return -EINVAL;
668
669 return add_event(list, idx, &attr,
670 (char *) __event_name(type, config));
671}
672
673static int parse_events__is_name_term(struct parse_events__term *term)
674{
675 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
676}
677
678static char *pmu_event_name(struct perf_event_attr *attr,
679 struct list_head *head_terms)
680{
681 struct parse_events__term *term;
682
683 list_for_each_entry(term, head_terms, list)
684 if (parse_events__is_name_term(term))
685 return term->val.str;
686
687 return (char *) __event_name(PERF_TYPE_RAW, attr->config);
688}
689
690int parse_events_add_pmu(struct list_head **list, int *idx,
691 char *name, struct list_head *head_config)
692{
693 struct perf_event_attr attr;
694 struct perf_pmu *pmu;
695
696 pmu = perf_pmu__find(name);
697 if (!pmu)
698 return -EINVAL;
699
700 memset(&attr, 0, sizeof(attr));
701
702 /*
703 * Configure hardcoded terms first, no need to check
704 * return value when called with fail == 0 ;)
705 */
706 config_attr(&attr, head_config, 0);
707
708 if (perf_pmu__config(pmu, &attr, head_config))
709 return -EINVAL;
710
711 return add_event(list, idx, &attr,
712 pmu_event_name(&attr, head_config));
713}
714
715void parse_events_update_lists(struct list_head *list_event,
716 struct list_head *list_all)
717{
718 /*
719 * Called for single event definition. Update the
720 * 'all event' list, and reinit the 'signle event'
721 * list, for next event definition.
722 */
723 list_splice_tail(list_event, list_all);
724 free(list_event);
725}
726
727int parse_events_modifier(struct list_head *list, char *str)
728{
729 struct perf_evsel *evsel;
730 int exclude = 0, exclude_GH = 0;
731 int eu = 0, ek = 0, eh = 0, eH = 0, eG = 0, precise = 0;
732
733 if (str == NULL)
734 return 0;
735
736 while (*str) {
737 if (*str == 'u') {
738 if (!exclude)
739 exclude = eu = ek = eh = 1;
740 eu = 0;
741 } else if (*str == 'k') {
742 if (!exclude)
743 exclude = eu = ek = eh = 1;
744 ek = 0;
745 } else if (*str == 'h') {
746 if (!exclude)
747 exclude = eu = ek = eh = 1;
748 eh = 0;
749 } else if (*str == 'G') {
750 if (!exclude_GH)
751 exclude_GH = eG = eH = 1;
752 eG = 0;
753 } else if (*str == 'H') {
754 if (!exclude_GH)
755 exclude_GH = eG = eH = 1;
756 eH = 0;
757 } else if (*str == 'p') {
758 precise++;
759 } else
760 break;
761
762 ++str;
763 }
764
765 /*
766 * precise ip:
767 *
768 * 0 - SAMPLE_IP can have arbitrary skid
769 * 1 - SAMPLE_IP must have constant skid
770 * 2 - SAMPLE_IP requested to have 0 skid
771 * 3 - SAMPLE_IP must have 0 skid
772 *
773 * See also PERF_RECORD_MISC_EXACT_IP
774 */
775 if (precise > 3)
776 return -EINVAL;
777
778 list_for_each_entry(evsel, list, node) {
779 evsel->attr.exclude_user = eu;
780 evsel->attr.exclude_kernel = ek;
781 evsel->attr.exclude_hv = eh;
782 evsel->attr.precise_ip = precise;
783 evsel->attr.exclude_host = eH;
784 evsel->attr.exclude_guest = eG;
785 }
786
787 return 0;
788}
789
790int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
791{
792 LIST_HEAD(list);
793 LIST_HEAD(list_tmp);
794 YY_BUFFER_STATE buffer;
795 int ret, idx = evlist->nr_entries;
796
797 buffer = parse_events__scan_string(str);
798
799#ifdef PARSER_DEBUG
800 parse_events_debug = 1;
801#endif
802 ret = parse_events_parse(&list, &idx);
803
804 parse_events__flush_buffer(buffer);
805 parse_events__delete_buffer(buffer);
806 parse_events_lex_destroy();
807
808 if (!ret) {
809 int entries = idx - evlist->nr_entries;
810 perf_evlist__splice_list_tail(evlist, &list, entries);
811 return 0;
812 }
813
814 /*
815 * There are 2 users - builtin-record and builtin-test objects.
816 * Both call perf_evlist__delete in case of error, so we dont
817 * need to bother.
818 */
819 fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
820 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
821 return ret;
822}
823
824int parse_events_option(const struct option *opt, const char *str,
825 int unset __used)
826{
827 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
828 return parse_events(evlist, str, unset);
829}
830
831int parse_filter(const struct option *opt, const char *str,
832 int unset __used)
833{
834 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
835 struct perf_evsel *last = NULL;
836
837 if (evlist->nr_entries > 0)
838 last = list_entry(evlist->entries.prev, struct perf_evsel, node);
839
840 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
841 fprintf(stderr,
842 "-F option should follow a -e tracepoint option\n");
843 return -1;
844 }
845
846 last->filter = strdup(str);
847 if (last->filter == NULL) {
848 fprintf(stderr, "not enough memory to hold filter string\n");
849 return -1;
850 }
851
852 return 0;
853}
854
855static const char * const event_type_descriptors[] = {
856 "Hardware event",
857 "Software event",
858 "Tracepoint event",
859 "Hardware cache event",
860 "Raw hardware event descriptor",
861 "Hardware breakpoint",
862};
863
864/*
865 * Print the events from <debugfs_mount_point>/tracing/events
866 */
867
868void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
869{
870 DIR *sys_dir, *evt_dir;
871 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
872 char evt_path[MAXPATHLEN];
873 char dir_path[MAXPATHLEN];
874
875 if (debugfs_valid_mountpoint(tracing_events_path))
876 return;
877
878 sys_dir = opendir(tracing_events_path);
879 if (!sys_dir)
880 return;
881
882 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
883 if (subsys_glob != NULL &&
884 !strglobmatch(sys_dirent.d_name, subsys_glob))
885 continue;
886
887 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
888 sys_dirent.d_name);
889 evt_dir = opendir(dir_path);
890 if (!evt_dir)
891 continue;
892
893 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
894 if (event_glob != NULL &&
895 !strglobmatch(evt_dirent.d_name, event_glob))
896 continue;
897
898 snprintf(evt_path, MAXPATHLEN, "%s:%s",
899 sys_dirent.d_name, evt_dirent.d_name);
900 printf(" %-50s [%s]\n", evt_path,
901 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
902 }
903 closedir(evt_dir);
904 }
905 closedir(sys_dir);
906}
907
908/*
909 * Check whether event is in <debugfs_mount_point>/tracing/events
910 */
911
912int is_valid_tracepoint(const char *event_string)
913{
914 DIR *sys_dir, *evt_dir;
915 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
916 char evt_path[MAXPATHLEN];
917 char dir_path[MAXPATHLEN];
918
919 if (debugfs_valid_mountpoint(tracing_events_path))
920 return 0;
921
922 sys_dir = opendir(tracing_events_path);
923 if (!sys_dir)
924 return 0;
925
926 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
927
928 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
929 sys_dirent.d_name);
930 evt_dir = opendir(dir_path);
931 if (!evt_dir)
932 continue;
933
934 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
935 snprintf(evt_path, MAXPATHLEN, "%s:%s",
936 sys_dirent.d_name, evt_dirent.d_name);
937 if (!strcmp(evt_path, event_string)) {
938 closedir(evt_dir);
939 closedir(sys_dir);
940 return 1;
941 }
942 }
943 closedir(evt_dir);
944 }
945 closedir(sys_dir);
946 return 0;
947}
948
949void print_events_type(u8 type)
950{
951 struct event_symbol *syms = event_symbols;
952 unsigned int i;
953 char name[64];
954
955 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
956 if (type != syms->type)
957 continue;
958
959 if (strlen(syms->alias))
960 snprintf(name, sizeof(name), "%s OR %s",
961 syms->symbol, syms->alias);
962 else
963 snprintf(name, sizeof(name), "%s", syms->symbol);
964
965 printf(" %-50s [%s]\n", name,
966 event_type_descriptors[type]);
967 }
968}
969
970int print_hwcache_events(const char *event_glob)
971{
972 unsigned int type, op, i, printed = 0;
973
974 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
975 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
976 /* skip invalid cache type */
977 if (!is_cache_op_valid(type, op))
978 continue;
979
980 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
981 char *name = event_cache_name(type, op, i);
982
983 if (event_glob != NULL && !strglobmatch(name, event_glob))
984 continue;
985
986 printf(" %-50s [%s]\n", name,
987 event_type_descriptors[PERF_TYPE_HW_CACHE]);
988 ++printed;
989 }
990 }
991 }
992
993 return printed;
994}
995
996/*
997 * Print the help text for the event symbols:
998 */
999void print_events(const char *event_glob)
1000{
1001 unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
1002 struct event_symbol *syms = event_symbols;
1003 char name[MAX_NAME_LEN];
1004
1005 printf("\n");
1006 printf("List of pre-defined events (to be used in -e):\n");
1007
1008 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
1009 type = syms->type;
1010
1011 if (type != prev_type && printed) {
1012 printf("\n");
1013 printed = 0;
1014 ntypes_printed++;
1015 }
1016
1017 if (event_glob != NULL &&
1018 !(strglobmatch(syms->symbol, event_glob) ||
1019 (syms->alias && strglobmatch(syms->alias, event_glob))))
1020 continue;
1021
1022 if (strlen(syms->alias))
1023 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1024 else
1025 strncpy(name, syms->symbol, MAX_NAME_LEN);
1026 printf(" %-50s [%s]\n", name,
1027 event_type_descriptors[type]);
1028
1029 prev_type = type;
1030 ++printed;
1031 }
1032
1033 if (ntypes_printed) {
1034 printed = 0;
1035 printf("\n");
1036 }
1037 print_hwcache_events(event_glob);
1038
1039 if (event_glob != NULL)
1040 return;
1041
1042 printf("\n");
1043 printf(" %-50s [%s]\n",
1044 "rNNN",
1045 event_type_descriptors[PERF_TYPE_RAW]);
1046 printf(" %-50s [%s]\n",
1047 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1048 event_type_descriptors[PERF_TYPE_RAW]);
1049 printf(" (see 'perf list --help' on how to encode it)\n");
1050 printf("\n");
1051
1052 printf(" %-50s [%s]\n",
1053 "mem:<addr>[:access]",
1054 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1055 printf("\n");
1056
1057 print_tracepoint_events(NULL, NULL);
1058}
1059
1060int parse_events__is_hardcoded_term(struct parse_events__term *term)
1061{
1062 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1063}
1064
1065static int new_term(struct parse_events__term **_term, int type_val,
1066 int type_term, char *config,
1067 char *str, long num)
1068{
1069 struct parse_events__term *term;
1070
1071 term = zalloc(sizeof(*term));
1072 if (!term)
1073 return -ENOMEM;
1074
1075 INIT_LIST_HEAD(&term->list);
1076 term->type_val = type_val;
1077 term->type_term = type_term;
1078 term->config = config;
1079
1080 switch (type_val) {
1081 case PARSE_EVENTS__TERM_TYPE_NUM:
1082 term->val.num = num;
1083 break;
1084 case PARSE_EVENTS__TERM_TYPE_STR:
1085 term->val.str = str;
1086 break;
1087 default:
1088 return -EINVAL;
1089 }
1090
1091 *_term = term;
1092 return 0;
1093}
1094
1095int parse_events__term_num(struct parse_events__term **term,
1096 int type_term, char *config, long num)
1097{
1098 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1099 config, NULL, num);
1100}
1101
1102int parse_events__term_str(struct parse_events__term **term,
1103 int type_term, char *config, char *str)
1104{
1105 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1106 config, str, 0);
1107}
1108
1109void parse_events__free_terms(struct list_head *terms)
1110{
1111 struct parse_events__term *term, *h;
1112
1113 list_for_each_entry_safe(term, h, terms, list)
1114 free(term);
1115
1116 free(terms);
1117}