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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}
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/hw_breakpoint.h>
3#include <linux/err.h>
4#include <linux/zalloc.h>
5#include <dirent.h>
6#include <errno.h>
7#include <sys/ioctl.h>
8#include <sys/param.h>
9#include "term.h"
10#include "evlist.h"
11#include "evsel.h"
12#include <subcmd/parse-options.h>
13#include "parse-events.h"
14#include "string2.h"
15#include "strlist.h"
16#include "bpf-loader.h"
17#include "debug.h"
18#include <api/fs/tracing_path.h>
19#include <perf/cpumap.h>
20#include "parse-events-bison.h"
21#include "parse-events-flex.h"
22#include "pmu.h"
23#include "asm/bug.h"
24#include "util/parse-branch-options.h"
25#include "util/evsel_config.h"
26#include "util/event.h"
27#include "perf.h"
28#include "util/parse-events-hybrid.h"
29#include "util/pmu-hybrid.h"
30#include "tracepoint.h"
31#include "thread_map.h"
32
33#define MAX_NAME_LEN 100
34
35struct perf_pmu_event_symbol {
36 char *symbol;
37 enum perf_pmu_event_symbol_type type;
38};
39
40#ifdef PARSER_DEBUG
41extern int parse_events_debug;
42#endif
43int parse_events_parse(void *parse_state, void *scanner);
44static int get_config_terms(struct list_head *head_config,
45 struct list_head *head_terms __maybe_unused);
46static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state,
47 const char *str, char *pmu_name,
48 struct list_head *list);
49
50static struct perf_pmu_event_symbol *perf_pmu_events_list;
51/*
52 * The variable indicates the number of supported pmu event symbols.
53 * 0 means not initialized and ready to init
54 * -1 means failed to init, don't try anymore
55 * >0 is the number of supported pmu event symbols
56 */
57static int perf_pmu_events_list_num;
58
59struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
60 [PERF_COUNT_HW_CPU_CYCLES] = {
61 .symbol = "cpu-cycles",
62 .alias = "cycles",
63 },
64 [PERF_COUNT_HW_INSTRUCTIONS] = {
65 .symbol = "instructions",
66 .alias = "",
67 },
68 [PERF_COUNT_HW_CACHE_REFERENCES] = {
69 .symbol = "cache-references",
70 .alias = "",
71 },
72 [PERF_COUNT_HW_CACHE_MISSES] = {
73 .symbol = "cache-misses",
74 .alias = "",
75 },
76 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
77 .symbol = "branch-instructions",
78 .alias = "branches",
79 },
80 [PERF_COUNT_HW_BRANCH_MISSES] = {
81 .symbol = "branch-misses",
82 .alias = "",
83 },
84 [PERF_COUNT_HW_BUS_CYCLES] = {
85 .symbol = "bus-cycles",
86 .alias = "",
87 },
88 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
89 .symbol = "stalled-cycles-frontend",
90 .alias = "idle-cycles-frontend",
91 },
92 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
93 .symbol = "stalled-cycles-backend",
94 .alias = "idle-cycles-backend",
95 },
96 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
97 .symbol = "ref-cycles",
98 .alias = "",
99 },
100};
101
102struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
103 [PERF_COUNT_SW_CPU_CLOCK] = {
104 .symbol = "cpu-clock",
105 .alias = "",
106 },
107 [PERF_COUNT_SW_TASK_CLOCK] = {
108 .symbol = "task-clock",
109 .alias = "",
110 },
111 [PERF_COUNT_SW_PAGE_FAULTS] = {
112 .symbol = "page-faults",
113 .alias = "faults",
114 },
115 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
116 .symbol = "context-switches",
117 .alias = "cs",
118 },
119 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
120 .symbol = "cpu-migrations",
121 .alias = "migrations",
122 },
123 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
124 .symbol = "minor-faults",
125 .alias = "",
126 },
127 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
128 .symbol = "major-faults",
129 .alias = "",
130 },
131 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
132 .symbol = "alignment-faults",
133 .alias = "",
134 },
135 [PERF_COUNT_SW_EMULATION_FAULTS] = {
136 .symbol = "emulation-faults",
137 .alias = "",
138 },
139 [PERF_COUNT_SW_DUMMY] = {
140 .symbol = "dummy",
141 .alias = "",
142 },
143 [PERF_COUNT_SW_BPF_OUTPUT] = {
144 .symbol = "bpf-output",
145 .alias = "",
146 },
147 [PERF_COUNT_SW_CGROUP_SWITCHES] = {
148 .symbol = "cgroup-switches",
149 .alias = "",
150 },
151};
152
153bool is_event_supported(u8 type, u64 config)
154{
155 bool ret = true;
156 int open_return;
157 struct evsel *evsel;
158 struct perf_event_attr attr = {
159 .type = type,
160 .config = config,
161 .disabled = 1,
162 };
163 struct perf_thread_map *tmap = thread_map__new_by_tid(0);
164
165 if (tmap == NULL)
166 return false;
167
168 evsel = evsel__new(&attr);
169 if (evsel) {
170 open_return = evsel__open(evsel, NULL, tmap);
171 ret = open_return >= 0;
172
173 if (open_return == -EACCES) {
174 /*
175 * This happens if the paranoid value
176 * /proc/sys/kernel/perf_event_paranoid is set to 2
177 * Re-run with exclude_kernel set; we don't do that
178 * by default as some ARM machines do not support it.
179 *
180 */
181 evsel->core.attr.exclude_kernel = 1;
182 ret = evsel__open(evsel, NULL, tmap) >= 0;
183 }
184 evsel__delete(evsel);
185 }
186
187 perf_thread_map__put(tmap);
188 return ret;
189}
190
191const char *event_type(int type)
192{
193 switch (type) {
194 case PERF_TYPE_HARDWARE:
195 return "hardware";
196
197 case PERF_TYPE_SOFTWARE:
198 return "software";
199
200 case PERF_TYPE_TRACEPOINT:
201 return "tracepoint";
202
203 case PERF_TYPE_HW_CACHE:
204 return "hardware-cache";
205
206 default:
207 break;
208 }
209
210 return "unknown";
211}
212
213static char *get_config_str(struct list_head *head_terms, int type_term)
214{
215 struct parse_events_term *term;
216
217 if (!head_terms)
218 return NULL;
219
220 list_for_each_entry(term, head_terms, list)
221 if (term->type_term == type_term)
222 return term->val.str;
223
224 return NULL;
225}
226
227static char *get_config_metric_id(struct list_head *head_terms)
228{
229 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID);
230}
231
232static char *get_config_name(struct list_head *head_terms)
233{
234 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME);
235}
236
237static struct evsel *
238__add_event(struct list_head *list, int *idx,
239 struct perf_event_attr *attr,
240 bool init_attr,
241 const char *name, const char *metric_id, struct perf_pmu *pmu,
242 struct list_head *config_terms, bool auto_merge_stats,
243 const char *cpu_list)
244{
245 struct evsel *evsel;
246 struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) :
247 cpu_list ? perf_cpu_map__new(cpu_list) : NULL;
248
249 if (pmu)
250 perf_pmu__warn_invalid_formats(pmu);
251
252 if (pmu && attr->type == PERF_TYPE_RAW)
253 perf_pmu__warn_invalid_config(pmu, attr->config, name);
254
255 if (init_attr)
256 event_attr_init(attr);
257
258 evsel = evsel__new_idx(attr, *idx);
259 if (!evsel) {
260 perf_cpu_map__put(cpus);
261 return NULL;
262 }
263
264 (*idx)++;
265 evsel->core.cpus = cpus;
266 evsel->core.own_cpus = perf_cpu_map__get(cpus);
267 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false;
268 evsel->auto_merge_stats = auto_merge_stats;
269 evsel->pmu = pmu;
270
271 if (name)
272 evsel->name = strdup(name);
273
274 if (metric_id)
275 evsel->metric_id = strdup(metric_id);
276
277 if (config_terms)
278 list_splice_init(config_terms, &evsel->config_terms);
279
280 if (list)
281 list_add_tail(&evsel->core.node, list);
282
283 return evsel;
284}
285
286struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
287 const char *name, const char *metric_id,
288 struct perf_pmu *pmu)
289{
290 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name,
291 metric_id, pmu, /*config_terms=*/NULL,
292 /*auto_merge_stats=*/false, /*cpu_list=*/NULL);
293}
294
295static int add_event(struct list_head *list, int *idx,
296 struct perf_event_attr *attr, const char *name,
297 const char *metric_id, struct list_head *config_terms)
298{
299 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id,
300 /*pmu=*/NULL, config_terms,
301 /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM;
302}
303
304static int add_event_tool(struct list_head *list, int *idx,
305 enum perf_tool_event tool_event)
306{
307 struct evsel *evsel;
308 struct perf_event_attr attr = {
309 .type = PERF_TYPE_SOFTWARE,
310 .config = PERF_COUNT_SW_DUMMY,
311 };
312
313 evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL,
314 /*metric_id=*/NULL, /*pmu=*/NULL,
315 /*config_terms=*/NULL, /*auto_merge_stats=*/false,
316 /*cpu_list=*/"0");
317 if (!evsel)
318 return -ENOMEM;
319 evsel->tool_event = tool_event;
320 if (tool_event == PERF_TOOL_DURATION_TIME
321 || tool_event == PERF_TOOL_USER_TIME
322 || tool_event == PERF_TOOL_SYSTEM_TIME) {
323 free((char *)evsel->unit);
324 evsel->unit = strdup("ns");
325 }
326 return 0;
327}
328
329static int parse_aliases(char *str, const char *const names[][EVSEL__MAX_ALIASES], int size)
330{
331 int i, j;
332 int n, longest = -1;
333
334 for (i = 0; i < size; i++) {
335 for (j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {
336 n = strlen(names[i][j]);
337 if (n > longest && !strncasecmp(str, names[i][j], n))
338 longest = n;
339 }
340 if (longest > 0)
341 return i;
342 }
343
344 return -1;
345}
346
347typedef int config_term_func_t(struct perf_event_attr *attr,
348 struct parse_events_term *term,
349 struct parse_events_error *err);
350static int config_term_common(struct perf_event_attr *attr,
351 struct parse_events_term *term,
352 struct parse_events_error *err);
353static int config_attr(struct perf_event_attr *attr,
354 struct list_head *head,
355 struct parse_events_error *err,
356 config_term_func_t config_term);
357
358int parse_events_add_cache(struct list_head *list, int *idx,
359 char *type, char *op_result1, char *op_result2,
360 struct parse_events_error *err,
361 struct list_head *head_config,
362 struct parse_events_state *parse_state)
363{
364 struct perf_event_attr attr;
365 LIST_HEAD(config_terms);
366 char name[MAX_NAME_LEN];
367 const char *config_name, *metric_id;
368 int cache_type = -1, cache_op = -1, cache_result = -1;
369 char *op_result[2] = { op_result1, op_result2 };
370 int i, n, ret;
371 bool hybrid;
372
373 /*
374 * No fallback - if we cannot get a clear cache type
375 * then bail out:
376 */
377 cache_type = parse_aliases(type, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX);
378 if (cache_type == -1)
379 return -EINVAL;
380
381 config_name = get_config_name(head_config);
382 n = snprintf(name, MAX_NAME_LEN, "%s", type);
383
384 for (i = 0; (i < 2) && (op_result[i]); i++) {
385 char *str = op_result[i];
386
387 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
388
389 if (cache_op == -1) {
390 cache_op = parse_aliases(str, evsel__hw_cache_op,
391 PERF_COUNT_HW_CACHE_OP_MAX);
392 if (cache_op >= 0) {
393 if (!evsel__is_cache_op_valid(cache_type, cache_op))
394 return -EINVAL;
395 continue;
396 }
397 }
398
399 if (cache_result == -1) {
400 cache_result = parse_aliases(str, evsel__hw_cache_result,
401 PERF_COUNT_HW_CACHE_RESULT_MAX);
402 if (cache_result >= 0)
403 continue;
404 }
405 }
406
407 /*
408 * Fall back to reads:
409 */
410 if (cache_op == -1)
411 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
412
413 /*
414 * Fall back to accesses:
415 */
416 if (cache_result == -1)
417 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
418
419 memset(&attr, 0, sizeof(attr));
420 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
421 attr.type = PERF_TYPE_HW_CACHE;
422
423 if (head_config) {
424 if (config_attr(&attr, head_config, err,
425 config_term_common))
426 return -EINVAL;
427
428 if (get_config_terms(head_config, &config_terms))
429 return -ENOMEM;
430 }
431
432 metric_id = get_config_metric_id(head_config);
433 ret = parse_events__add_cache_hybrid(list, idx, &attr,
434 config_name ? : name,
435 metric_id,
436 &config_terms,
437 &hybrid, parse_state);
438 if (hybrid)
439 goto out_free_terms;
440
441 ret = add_event(list, idx, &attr, config_name ? : name, metric_id,
442 &config_terms);
443out_free_terms:
444 free_config_terms(&config_terms);
445 return ret;
446}
447
448#ifdef HAVE_LIBTRACEEVENT
449static void tracepoint_error(struct parse_events_error *e, int err,
450 const char *sys, const char *name)
451{
452 const char *str;
453 char help[BUFSIZ];
454
455 if (!e)
456 return;
457
458 /*
459 * We get error directly from syscall errno ( > 0),
460 * or from encoded pointer's error ( < 0).
461 */
462 err = abs(err);
463
464 switch (err) {
465 case EACCES:
466 str = "can't access trace events";
467 break;
468 case ENOENT:
469 str = "unknown tracepoint";
470 break;
471 default:
472 str = "failed to add tracepoint";
473 break;
474 }
475
476 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
477 parse_events_error__handle(e, 0, strdup(str), strdup(help));
478}
479
480static int add_tracepoint(struct list_head *list, int *idx,
481 const char *sys_name, const char *evt_name,
482 struct parse_events_error *err,
483 struct list_head *head_config)
484{
485 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++);
486
487 if (IS_ERR(evsel)) {
488 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
489 return PTR_ERR(evsel);
490 }
491
492 if (head_config) {
493 LIST_HEAD(config_terms);
494
495 if (get_config_terms(head_config, &config_terms))
496 return -ENOMEM;
497 list_splice(&config_terms, &evsel->config_terms);
498 }
499
500 list_add_tail(&evsel->core.node, list);
501 return 0;
502}
503
504static int add_tracepoint_multi_event(struct list_head *list, int *idx,
505 const char *sys_name, const char *evt_name,
506 struct parse_events_error *err,
507 struct list_head *head_config)
508{
509 char *evt_path;
510 struct dirent *evt_ent;
511 DIR *evt_dir;
512 int ret = 0, found = 0;
513
514 evt_path = get_events_file(sys_name);
515 if (!evt_path) {
516 tracepoint_error(err, errno, sys_name, evt_name);
517 return -1;
518 }
519 evt_dir = opendir(evt_path);
520 if (!evt_dir) {
521 put_events_file(evt_path);
522 tracepoint_error(err, errno, sys_name, evt_name);
523 return -1;
524 }
525
526 while (!ret && (evt_ent = readdir(evt_dir))) {
527 if (!strcmp(evt_ent->d_name, ".")
528 || !strcmp(evt_ent->d_name, "..")
529 || !strcmp(evt_ent->d_name, "enable")
530 || !strcmp(evt_ent->d_name, "filter"))
531 continue;
532
533 if (!strglobmatch(evt_ent->d_name, evt_name))
534 continue;
535
536 found++;
537
538 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
539 err, head_config);
540 }
541
542 if (!found) {
543 tracepoint_error(err, ENOENT, sys_name, evt_name);
544 ret = -1;
545 }
546
547 put_events_file(evt_path);
548 closedir(evt_dir);
549 return ret;
550}
551
552static int add_tracepoint_event(struct list_head *list, int *idx,
553 const char *sys_name, const char *evt_name,
554 struct parse_events_error *err,
555 struct list_head *head_config)
556{
557 return strpbrk(evt_name, "*?") ?
558 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
559 err, head_config) :
560 add_tracepoint(list, idx, sys_name, evt_name,
561 err, head_config);
562}
563
564static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
565 const char *sys_name, const char *evt_name,
566 struct parse_events_error *err,
567 struct list_head *head_config)
568{
569 struct dirent *events_ent;
570 DIR *events_dir;
571 int ret = 0;
572
573 events_dir = tracing_events__opendir();
574 if (!events_dir) {
575 tracepoint_error(err, errno, sys_name, evt_name);
576 return -1;
577 }
578
579 while (!ret && (events_ent = readdir(events_dir))) {
580 if (!strcmp(events_ent->d_name, ".")
581 || !strcmp(events_ent->d_name, "..")
582 || !strcmp(events_ent->d_name, "enable")
583 || !strcmp(events_ent->d_name, "header_event")
584 || !strcmp(events_ent->d_name, "header_page"))
585 continue;
586
587 if (!strglobmatch(events_ent->d_name, sys_name))
588 continue;
589
590 ret = add_tracepoint_event(list, idx, events_ent->d_name,
591 evt_name, err, head_config);
592 }
593
594 closedir(events_dir);
595 return ret;
596}
597#endif /* HAVE_LIBTRACEEVENT */
598
599#ifdef HAVE_LIBBPF_SUPPORT
600struct __add_bpf_event_param {
601 struct parse_events_state *parse_state;
602 struct list_head *list;
603 struct list_head *head_config;
604};
605
606static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj,
607 void *_param)
608{
609 LIST_HEAD(new_evsels);
610 struct __add_bpf_event_param *param = _param;
611 struct parse_events_state *parse_state = param->parse_state;
612 struct list_head *list = param->list;
613 struct evsel *pos;
614 int err;
615 /*
616 * Check if we should add the event, i.e. if it is a TP but starts with a '!',
617 * then don't add the tracepoint, this will be used for something else, like
618 * adding to a BPF_MAP_TYPE_PROG_ARRAY.
619 *
620 * See tools/perf/examples/bpf/augmented_raw_syscalls.c
621 */
622 if (group[0] == '!')
623 return 0;
624
625 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
626 group, event, fd);
627
628 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group,
629 event, parse_state->error,
630 param->head_config);
631 if (err) {
632 struct evsel *evsel, *tmp;
633
634 pr_debug("Failed to add BPF event %s:%s\n",
635 group, event);
636 list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) {
637 list_del_init(&evsel->core.node);
638 evsel__delete(evsel);
639 }
640 return err;
641 }
642 pr_debug("adding %s:%s\n", group, event);
643
644 list_for_each_entry(pos, &new_evsels, core.node) {
645 pr_debug("adding %s:%s to %p\n",
646 group, event, pos);
647 pos->bpf_fd = fd;
648 pos->bpf_obj = obj;
649 }
650 list_splice(&new_evsels, list);
651 return 0;
652}
653
654int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
655 struct list_head *list,
656 struct bpf_object *obj,
657 struct list_head *head_config)
658{
659 int err;
660 char errbuf[BUFSIZ];
661 struct __add_bpf_event_param param = {parse_state, list, head_config};
662 static bool registered_unprobe_atexit = false;
663
664 if (IS_ERR(obj) || !obj) {
665 snprintf(errbuf, sizeof(errbuf),
666 "Internal error: load bpf obj with NULL");
667 err = -EINVAL;
668 goto errout;
669 }
670
671 /*
672 * Register atexit handler before calling bpf__probe() so
673 * bpf__probe() don't need to unprobe probe points its already
674 * created when failure.
675 */
676 if (!registered_unprobe_atexit) {
677 atexit(bpf__clear);
678 registered_unprobe_atexit = true;
679 }
680
681 err = bpf__probe(obj);
682 if (err) {
683 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
684 goto errout;
685 }
686
687 err = bpf__load(obj);
688 if (err) {
689 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
690 goto errout;
691 }
692
693 err = bpf__foreach_event(obj, add_bpf_event, ¶m);
694 if (err) {
695 snprintf(errbuf, sizeof(errbuf),
696 "Attach events in BPF object failed");
697 goto errout;
698 }
699
700 return 0;
701errout:
702 parse_events_error__handle(parse_state->error, 0,
703 strdup(errbuf), strdup("(add -v to see detail)"));
704 return err;
705}
706
707static int
708parse_events_config_bpf(struct parse_events_state *parse_state,
709 struct bpf_object *obj,
710 struct list_head *head_config)
711{
712 struct parse_events_term *term;
713 int error_pos;
714
715 if (!head_config || list_empty(head_config))
716 return 0;
717
718 list_for_each_entry(term, head_config, list) {
719 int err;
720
721 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
722 parse_events_error__handle(parse_state->error, term->err_term,
723 strdup("Invalid config term for BPF object"),
724 NULL);
725 return -EINVAL;
726 }
727
728 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
729 if (err) {
730 char errbuf[BUFSIZ];
731 int idx;
732
733 bpf__strerror_config_obj(obj, term, parse_state->evlist,
734 &error_pos, err, errbuf,
735 sizeof(errbuf));
736
737 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
738 idx = term->err_val;
739 else
740 idx = term->err_term + error_pos;
741
742 parse_events_error__handle(parse_state->error, idx,
743 strdup(errbuf),
744 strdup(
745"Hint:\tValid config terms:\n"
746" \tmap:[<arraymap>].value<indices>=[value]\n"
747" \tmap:[<eventmap>].event<indices>=[event]\n"
748"\n"
749" \twhere <indices> is something like [0,3...5] or [all]\n"
750" \t(add -v to see detail)"));
751 return err;
752 }
753 }
754 return 0;
755}
756
757/*
758 * Split config terms:
759 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
760 * 'call-graph=fp' is 'evt config', should be applied to each
761 * events in bpf.c.
762 * 'map:array.value[0]=1' is 'obj config', should be processed
763 * with parse_events_config_bpf.
764 *
765 * Move object config terms from the first list to obj_head_config.
766 */
767static void
768split_bpf_config_terms(struct list_head *evt_head_config,
769 struct list_head *obj_head_config)
770{
771 struct parse_events_term *term, *temp;
772
773 /*
774 * Currently, all possible user config term
775 * belong to bpf object. parse_events__is_hardcoded_term()
776 * happens to be a good flag.
777 *
778 * See parse_events_config_bpf() and
779 * config_term_tracepoint().
780 */
781 list_for_each_entry_safe(term, temp, evt_head_config, list)
782 if (!parse_events__is_hardcoded_term(term))
783 list_move_tail(&term->list, obj_head_config);
784}
785
786int parse_events_load_bpf(struct parse_events_state *parse_state,
787 struct list_head *list,
788 char *bpf_file_name,
789 bool source,
790 struct list_head *head_config)
791{
792 int err;
793 struct bpf_object *obj;
794 LIST_HEAD(obj_head_config);
795
796 if (head_config)
797 split_bpf_config_terms(head_config, &obj_head_config);
798
799 obj = bpf__prepare_load(bpf_file_name, source);
800 if (IS_ERR(obj)) {
801 char errbuf[BUFSIZ];
802
803 err = PTR_ERR(obj);
804
805 if (err == -ENOTSUP)
806 snprintf(errbuf, sizeof(errbuf),
807 "BPF support is not compiled");
808 else
809 bpf__strerror_prepare_load(bpf_file_name,
810 source,
811 -err, errbuf,
812 sizeof(errbuf));
813
814 parse_events_error__handle(parse_state->error, 0,
815 strdup(errbuf), strdup("(add -v to see detail)"));
816 return err;
817 }
818
819 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config);
820 if (err)
821 return err;
822 err = parse_events_config_bpf(parse_state, obj, &obj_head_config);
823
824 /*
825 * Caller doesn't know anything about obj_head_config,
826 * so combine them together again before returning.
827 */
828 if (head_config)
829 list_splice_tail(&obj_head_config, head_config);
830 return err;
831}
832#else // HAVE_LIBBPF_SUPPORT
833int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
834 struct list_head *list __maybe_unused,
835 struct bpf_object *obj __maybe_unused,
836 struct list_head *head_config __maybe_unused)
837{
838 parse_events_error__handle(parse_state->error, 0,
839 strdup("BPF support is not compiled"),
840 strdup("Make sure libbpf-devel is available at build time."));
841 return -ENOTSUP;
842}
843
844int parse_events_load_bpf(struct parse_events_state *parse_state,
845 struct list_head *list __maybe_unused,
846 char *bpf_file_name __maybe_unused,
847 bool source __maybe_unused,
848 struct list_head *head_config __maybe_unused)
849{
850 parse_events_error__handle(parse_state->error, 0,
851 strdup("BPF support is not compiled"),
852 strdup("Make sure libbpf-devel is available at build time."));
853 return -ENOTSUP;
854}
855#endif // HAVE_LIBBPF_SUPPORT
856
857static int
858parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
859{
860 int i;
861
862 for (i = 0; i < 3; i++) {
863 if (!type || !type[i])
864 break;
865
866#define CHECK_SET_TYPE(bit) \
867do { \
868 if (attr->bp_type & bit) \
869 return -EINVAL; \
870 else \
871 attr->bp_type |= bit; \
872} while (0)
873
874 switch (type[i]) {
875 case 'r':
876 CHECK_SET_TYPE(HW_BREAKPOINT_R);
877 break;
878 case 'w':
879 CHECK_SET_TYPE(HW_BREAKPOINT_W);
880 break;
881 case 'x':
882 CHECK_SET_TYPE(HW_BREAKPOINT_X);
883 break;
884 default:
885 return -EINVAL;
886 }
887 }
888
889#undef CHECK_SET_TYPE
890
891 if (!attr->bp_type) /* Default */
892 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
893
894 return 0;
895}
896
897int parse_events_add_breakpoint(struct list_head *list, int *idx,
898 u64 addr, char *type, u64 len)
899{
900 struct perf_event_attr attr;
901
902 memset(&attr, 0, sizeof(attr));
903 attr.bp_addr = addr;
904
905 if (parse_breakpoint_type(type, &attr))
906 return -EINVAL;
907
908 /* Provide some defaults if len is not specified */
909 if (!len) {
910 if (attr.bp_type == HW_BREAKPOINT_X)
911 len = sizeof(long);
912 else
913 len = HW_BREAKPOINT_LEN_4;
914 }
915
916 attr.bp_len = len;
917
918 attr.type = PERF_TYPE_BREAKPOINT;
919 attr.sample_period = 1;
920
921 return add_event(list, idx, &attr, /*name=*/NULL, /*mertic_id=*/NULL,
922 /*config_terms=*/NULL);
923}
924
925static int check_type_val(struct parse_events_term *term,
926 struct parse_events_error *err,
927 int type)
928{
929 if (type == term->type_val)
930 return 0;
931
932 if (err) {
933 parse_events_error__handle(err, term->err_val,
934 type == PARSE_EVENTS__TERM_TYPE_NUM
935 ? strdup("expected numeric value")
936 : strdup("expected string value"),
937 NULL);
938 }
939 return -EINVAL;
940}
941
942/*
943 * Update according to parse-events.l
944 */
945static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
946 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
947 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
948 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
949 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
950 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
951 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
952 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
953 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
954 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
955 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
956 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
957 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
958 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
959 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
960 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr",
961 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
962 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
963 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
964 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore",
965 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output",
966 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size",
967 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id",
968};
969
970static bool config_term_shrinked;
971
972static bool
973config_term_avail(int term_type, struct parse_events_error *err)
974{
975 char *err_str;
976
977 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
978 parse_events_error__handle(err, -1,
979 strdup("Invalid term_type"), NULL);
980 return false;
981 }
982 if (!config_term_shrinked)
983 return true;
984
985 switch (term_type) {
986 case PARSE_EVENTS__TERM_TYPE_CONFIG:
987 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
988 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
989 case PARSE_EVENTS__TERM_TYPE_NAME:
990 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
991 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
992 case PARSE_EVENTS__TERM_TYPE_PERCORE:
993 return true;
994 default:
995 if (!err)
996 return false;
997
998 /* term_type is validated so indexing is safe */
999 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",
1000 config_term_names[term_type]) >= 0)
1001 parse_events_error__handle(err, -1, err_str, NULL);
1002 return false;
1003 }
1004}
1005
1006void parse_events__shrink_config_terms(void)
1007{
1008 config_term_shrinked = true;
1009}
1010
1011static int config_term_common(struct perf_event_attr *attr,
1012 struct parse_events_term *term,
1013 struct parse_events_error *err)
1014{
1015#define CHECK_TYPE_VAL(type) \
1016do { \
1017 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
1018 return -EINVAL; \
1019} while (0)
1020
1021 switch (term->type_term) {
1022 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1023 CHECK_TYPE_VAL(NUM);
1024 attr->config = term->val.num;
1025 break;
1026 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1027 CHECK_TYPE_VAL(NUM);
1028 attr->config1 = term->val.num;
1029 break;
1030 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1031 CHECK_TYPE_VAL(NUM);
1032 attr->config2 = term->val.num;
1033 break;
1034 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1035 CHECK_TYPE_VAL(NUM);
1036 break;
1037 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1038 CHECK_TYPE_VAL(NUM);
1039 break;
1040 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1041 CHECK_TYPE_VAL(STR);
1042 if (strcmp(term->val.str, "no") &&
1043 parse_branch_str(term->val.str,
1044 &attr->branch_sample_type)) {
1045 parse_events_error__handle(err, term->err_val,
1046 strdup("invalid branch sample type"),
1047 NULL);
1048 return -EINVAL;
1049 }
1050 break;
1051 case PARSE_EVENTS__TERM_TYPE_TIME:
1052 CHECK_TYPE_VAL(NUM);
1053 if (term->val.num > 1) {
1054 parse_events_error__handle(err, term->err_val,
1055 strdup("expected 0 or 1"),
1056 NULL);
1057 return -EINVAL;
1058 }
1059 break;
1060 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1061 CHECK_TYPE_VAL(STR);
1062 break;
1063 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1064 CHECK_TYPE_VAL(NUM);
1065 break;
1066 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1067 CHECK_TYPE_VAL(NUM);
1068 break;
1069 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1070 CHECK_TYPE_VAL(NUM);
1071 break;
1072 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1073 CHECK_TYPE_VAL(NUM);
1074 break;
1075 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1076 CHECK_TYPE_VAL(NUM);
1077 break;
1078 case PARSE_EVENTS__TERM_TYPE_NAME:
1079 CHECK_TYPE_VAL(STR);
1080 break;
1081 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1082 CHECK_TYPE_VAL(STR);
1083 break;
1084 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1085 CHECK_TYPE_VAL(NUM);
1086 break;
1087 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1088 CHECK_TYPE_VAL(NUM);
1089 break;
1090 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1091 CHECK_TYPE_VAL(NUM);
1092 if ((unsigned int)term->val.num > 1) {
1093 parse_events_error__handle(err, term->err_val,
1094 strdup("expected 0 or 1"),
1095 NULL);
1096 return -EINVAL;
1097 }
1098 break;
1099 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1100 CHECK_TYPE_VAL(NUM);
1101 break;
1102 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1103 CHECK_TYPE_VAL(NUM);
1104 if (term->val.num > UINT_MAX) {
1105 parse_events_error__handle(err, term->err_val,
1106 strdup("too big"),
1107 NULL);
1108 return -EINVAL;
1109 }
1110 break;
1111 default:
1112 parse_events_error__handle(err, term->err_term,
1113 strdup("unknown term"),
1114 parse_events_formats_error_string(NULL));
1115 return -EINVAL;
1116 }
1117
1118 /*
1119 * Check term availability after basic checking so
1120 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1121 *
1122 * If check availability at the entry of this function,
1123 * user will see "'<sysfs term>' is not usable in 'perf stat'"
1124 * if an invalid config term is provided for legacy events
1125 * (for example, instructions/badterm/...), which is confusing.
1126 */
1127 if (!config_term_avail(term->type_term, err))
1128 return -EINVAL;
1129 return 0;
1130#undef CHECK_TYPE_VAL
1131}
1132
1133static int config_term_pmu(struct perf_event_attr *attr,
1134 struct parse_events_term *term,
1135 struct parse_events_error *err)
1136{
1137 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1138 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1139 /*
1140 * Always succeed for sysfs terms, as we dont know
1141 * at this point what type they need to have.
1142 */
1143 return 0;
1144 else
1145 return config_term_common(attr, term, err);
1146}
1147
1148#ifdef HAVE_LIBTRACEEVENT
1149static int config_term_tracepoint(struct perf_event_attr *attr,
1150 struct parse_events_term *term,
1151 struct parse_events_error *err)
1152{
1153 switch (term->type_term) {
1154 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1155 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1156 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1157 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1158 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1159 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1160 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1161 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1162 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1163 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1164 return config_term_common(attr, term, err);
1165 default:
1166 if (err) {
1167 parse_events_error__handle(err, term->err_term,
1168 strdup("unknown term"),
1169 strdup("valid terms: call-graph,stack-size\n"));
1170 }
1171 return -EINVAL;
1172 }
1173
1174 return 0;
1175}
1176#endif
1177
1178static int config_attr(struct perf_event_attr *attr,
1179 struct list_head *head,
1180 struct parse_events_error *err,
1181 config_term_func_t config_term)
1182{
1183 struct parse_events_term *term;
1184
1185 list_for_each_entry(term, head, list)
1186 if (config_term(attr, term, err))
1187 return -EINVAL;
1188
1189 return 0;
1190}
1191
1192static int get_config_terms(struct list_head *head_config,
1193 struct list_head *head_terms __maybe_unused)
1194{
1195#define ADD_CONFIG_TERM(__type, __weak) \
1196 struct evsel_config_term *__t; \
1197 \
1198 __t = zalloc(sizeof(*__t)); \
1199 if (!__t) \
1200 return -ENOMEM; \
1201 \
1202 INIT_LIST_HEAD(&__t->list); \
1203 __t->type = EVSEL__CONFIG_TERM_ ## __type; \
1204 __t->weak = __weak; \
1205 list_add_tail(&__t->list, head_terms)
1206
1207#define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \
1208do { \
1209 ADD_CONFIG_TERM(__type, __weak); \
1210 __t->val.__name = __val; \
1211} while (0)
1212
1213#define ADD_CONFIG_TERM_STR(__type, __val, __weak) \
1214do { \
1215 ADD_CONFIG_TERM(__type, __weak); \
1216 __t->val.str = strdup(__val); \
1217 if (!__t->val.str) { \
1218 zfree(&__t); \
1219 return -ENOMEM; \
1220 } \
1221 __t->free_str = true; \
1222} while (0)
1223
1224 struct parse_events_term *term;
1225
1226 list_for_each_entry(term, head_config, list) {
1227 switch (term->type_term) {
1228 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1229 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);
1230 break;
1231 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1232 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);
1233 break;
1234 case PARSE_EVENTS__TERM_TYPE_TIME:
1235 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);
1236 break;
1237 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1238 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);
1239 break;
1240 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1241 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);
1242 break;
1243 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1244 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
1245 term->val.num, term->weak);
1246 break;
1247 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1248 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1249 term->val.num ? 1 : 0, term->weak);
1250 break;
1251 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1252 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1253 term->val.num ? 0 : 1, term->weak);
1254 break;
1255 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1256 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
1257 term->val.num, term->weak);
1258 break;
1259 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1260 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
1261 term->val.num, term->weak);
1262 break;
1263 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1264 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1265 term->val.num ? 1 : 0, term->weak);
1266 break;
1267 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1268 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1269 term->val.num ? 0 : 1, term->weak);
1270 break;
1271 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1272 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);
1273 break;
1274 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1275 ADD_CONFIG_TERM_VAL(PERCORE, percore,
1276 term->val.num ? true : false, term->weak);
1277 break;
1278 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1279 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
1280 term->val.num ? 1 : 0, term->weak);
1281 break;
1282 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1283 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
1284 term->val.num, term->weak);
1285 break;
1286 default:
1287 break;
1288 }
1289 }
1290 return 0;
1291}
1292
1293/*
1294 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for
1295 * each bit of attr->config that the user has changed.
1296 */
1297static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config,
1298 struct list_head *head_terms)
1299{
1300 struct parse_events_term *term;
1301 u64 bits = 0;
1302 int type;
1303
1304 list_for_each_entry(term, head_config, list) {
1305 switch (term->type_term) {
1306 case PARSE_EVENTS__TERM_TYPE_USER:
1307 type = perf_pmu__format_type(&pmu->format, term->config);
1308 if (type != PERF_PMU_FORMAT_VALUE_CONFIG)
1309 continue;
1310 bits |= perf_pmu__format_bits(&pmu->format, term->config);
1311 break;
1312 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1313 bits = ~(u64)0;
1314 break;
1315 default:
1316 break;
1317 }
1318 }
1319
1320 if (bits)
1321 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);
1322
1323#undef ADD_CONFIG_TERM
1324 return 0;
1325}
1326
1327int parse_events_add_tracepoint(struct list_head *list, int *idx,
1328 const char *sys, const char *event,
1329 struct parse_events_error *err,
1330 struct list_head *head_config)
1331{
1332#ifdef HAVE_LIBTRACEEVENT
1333 if (head_config) {
1334 struct perf_event_attr attr;
1335
1336 if (config_attr(&attr, head_config, err,
1337 config_term_tracepoint))
1338 return -EINVAL;
1339 }
1340
1341 if (strpbrk(sys, "*?"))
1342 return add_tracepoint_multi_sys(list, idx, sys, event,
1343 err, head_config);
1344 else
1345 return add_tracepoint_event(list, idx, sys, event,
1346 err, head_config);
1347#else
1348 (void)list;
1349 (void)idx;
1350 (void)sys;
1351 (void)event;
1352 (void)head_config;
1353 parse_events_error__handle(err, 0, strdup("unsupported tracepoint"),
1354 strdup("libtraceevent is necessary for tracepoint support"));
1355 return -1;
1356#endif
1357}
1358
1359int parse_events_add_numeric(struct parse_events_state *parse_state,
1360 struct list_head *list,
1361 u32 type, u64 config,
1362 struct list_head *head_config)
1363{
1364 struct perf_event_attr attr;
1365 LIST_HEAD(config_terms);
1366 const char *name, *metric_id;
1367 bool hybrid;
1368 int ret;
1369
1370 memset(&attr, 0, sizeof(attr));
1371 attr.type = type;
1372 attr.config = config;
1373
1374 if (head_config) {
1375 if (config_attr(&attr, head_config, parse_state->error,
1376 config_term_common))
1377 return -EINVAL;
1378
1379 if (get_config_terms(head_config, &config_terms))
1380 return -ENOMEM;
1381 }
1382
1383 name = get_config_name(head_config);
1384 metric_id = get_config_metric_id(head_config);
1385 ret = parse_events__add_numeric_hybrid(parse_state, list, &attr,
1386 name, metric_id,
1387 &config_terms, &hybrid);
1388 if (hybrid)
1389 goto out_free_terms;
1390
1391 ret = add_event(list, &parse_state->idx, &attr, name, metric_id,
1392 &config_terms);
1393out_free_terms:
1394 free_config_terms(&config_terms);
1395 return ret;
1396}
1397
1398int parse_events_add_tool(struct parse_events_state *parse_state,
1399 struct list_head *list,
1400 int tool_event)
1401{
1402 return add_event_tool(list, &parse_state->idx, tool_event);
1403}
1404
1405static bool config_term_percore(struct list_head *config_terms)
1406{
1407 struct evsel_config_term *term;
1408
1409 list_for_each_entry(term, config_terms, list) {
1410 if (term->type == EVSEL__CONFIG_TERM_PERCORE)
1411 return term->val.percore;
1412 }
1413
1414 return false;
1415}
1416
1417static int parse_events__inside_hybrid_pmu(struct parse_events_state *parse_state,
1418 struct list_head *list, char *name,
1419 struct list_head *head_config)
1420{
1421 struct parse_events_term *term;
1422 int ret = -1;
1423
1424 if (parse_state->fake_pmu || !head_config || list_empty(head_config) ||
1425 !perf_pmu__is_hybrid(name)) {
1426 return -1;
1427 }
1428
1429 /*
1430 * More than one term in list.
1431 */
1432 if (head_config->next && head_config->next->next != head_config)
1433 return -1;
1434
1435 term = list_first_entry(head_config, struct parse_events_term, list);
1436 if (term && term->config && strcmp(term->config, "event")) {
1437 ret = parse_events__with_hybrid_pmu(parse_state, term->config,
1438 name, list);
1439 }
1440
1441 return ret;
1442}
1443
1444int parse_events_add_pmu(struct parse_events_state *parse_state,
1445 struct list_head *list, char *name,
1446 struct list_head *head_config,
1447 bool auto_merge_stats,
1448 bool use_alias)
1449{
1450 struct perf_event_attr attr;
1451 struct perf_pmu_info info;
1452 struct perf_pmu *pmu;
1453 struct evsel *evsel;
1454 struct parse_events_error *err = parse_state->error;
1455 bool use_uncore_alias;
1456 LIST_HEAD(config_terms);
1457
1458 pmu = parse_state->fake_pmu ?: perf_pmu__find(name);
1459
1460 if (verbose > 1 && !(pmu && pmu->selectable)) {
1461 fprintf(stderr, "Attempting to add event pmu '%s' with '",
1462 name);
1463 if (head_config) {
1464 struct parse_events_term *term;
1465
1466 list_for_each_entry(term, head_config, list) {
1467 fprintf(stderr, "%s,", term->config);
1468 }
1469 }
1470 fprintf(stderr, "' that may result in non-fatal errors\n");
1471 }
1472
1473 if (!pmu) {
1474 char *err_str;
1475
1476 if (asprintf(&err_str,
1477 "Cannot find PMU `%s'. Missing kernel support?",
1478 name) >= 0)
1479 parse_events_error__handle(err, 0, err_str, NULL);
1480 return -EINVAL;
1481 }
1482
1483 if (pmu->default_config) {
1484 memcpy(&attr, pmu->default_config,
1485 sizeof(struct perf_event_attr));
1486 } else {
1487 memset(&attr, 0, sizeof(attr));
1488 }
1489
1490 use_uncore_alias = (pmu->is_uncore && use_alias);
1491
1492 if (!head_config) {
1493 attr.type = pmu->type;
1494 evsel = __add_event(list, &parse_state->idx, &attr,
1495 /*init_attr=*/true, /*name=*/NULL,
1496 /*metric_id=*/NULL, pmu,
1497 /*config_terms=*/NULL, auto_merge_stats,
1498 /*cpu_list=*/NULL);
1499 if (evsel) {
1500 evsel->pmu_name = name ? strdup(name) : NULL;
1501 evsel->use_uncore_alias = use_uncore_alias;
1502 return 0;
1503 } else {
1504 return -ENOMEM;
1505 }
1506 }
1507
1508 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info))
1509 return -EINVAL;
1510
1511 if (verbose > 1) {
1512 fprintf(stderr, "After aliases, add event pmu '%s' with '",
1513 name);
1514 if (head_config) {
1515 struct parse_events_term *term;
1516
1517 list_for_each_entry(term, head_config, list) {
1518 fprintf(stderr, "%s,", term->config);
1519 }
1520 }
1521 fprintf(stderr, "' that may result in non-fatal errors\n");
1522 }
1523
1524 /*
1525 * Configure hardcoded terms first, no need to check
1526 * return value when called with fail == 0 ;)
1527 */
1528 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu))
1529 return -EINVAL;
1530
1531 if (get_config_terms(head_config, &config_terms))
1532 return -ENOMEM;
1533
1534 /*
1535 * When using default config, record which bits of attr->config were
1536 * changed by the user.
1537 */
1538 if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms))
1539 return -ENOMEM;
1540
1541 if (!parse_events__inside_hybrid_pmu(parse_state, list, name,
1542 head_config)) {
1543 return 0;
1544 }
1545
1546 if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) {
1547 free_config_terms(&config_terms);
1548 return -EINVAL;
1549 }
1550
1551 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true,
1552 get_config_name(head_config),
1553 get_config_metric_id(head_config), pmu,
1554 &config_terms, auto_merge_stats, /*cpu_list=*/NULL);
1555 if (!evsel)
1556 return -ENOMEM;
1557
1558 if (evsel->name)
1559 evsel->use_config_name = true;
1560
1561 evsel->pmu_name = name ? strdup(name) : NULL;
1562 evsel->use_uncore_alias = use_uncore_alias;
1563 evsel->percore = config_term_percore(&evsel->config_terms);
1564
1565 if (parse_state->fake_pmu)
1566 return 0;
1567
1568 free((char *)evsel->unit);
1569 evsel->unit = strdup(info.unit);
1570 evsel->scale = info.scale;
1571 evsel->per_pkg = info.per_pkg;
1572 evsel->snapshot = info.snapshot;
1573 evsel->metric_expr = info.metric_expr;
1574 evsel->metric_name = info.metric_name;
1575 return 0;
1576}
1577
1578int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1579 char *str, struct list_head *head,
1580 struct list_head **listp)
1581{
1582 struct parse_events_term *term;
1583 struct list_head *list = NULL;
1584 struct list_head *orig_head = NULL;
1585 struct perf_pmu *pmu = NULL;
1586 int ok = 0;
1587 char *config;
1588
1589 *listp = NULL;
1590
1591 if (!head) {
1592 head = malloc(sizeof(struct list_head));
1593 if (!head)
1594 goto out_err;
1595
1596 INIT_LIST_HEAD(head);
1597 }
1598 config = strdup(str);
1599 if (!config)
1600 goto out_err;
1601
1602 if (parse_events_term__num(&term,
1603 PARSE_EVENTS__TERM_TYPE_USER,
1604 config, 1, false, &config,
1605 NULL) < 0) {
1606 free(config);
1607 goto out_err;
1608 }
1609 list_add_tail(&term->list, head);
1610
1611 /* Add it for all PMUs that support the alias */
1612 list = malloc(sizeof(struct list_head));
1613 if (!list)
1614 goto out_err;
1615
1616 INIT_LIST_HEAD(list);
1617
1618 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1619 struct perf_pmu_alias *alias;
1620
1621 list_for_each_entry(alias, &pmu->aliases, list) {
1622 if (!strcasecmp(alias->name, str)) {
1623 parse_events_copy_term_list(head, &orig_head);
1624 if (!parse_events_add_pmu(parse_state, list,
1625 pmu->name, orig_head,
1626 true, true)) {
1627 pr_debug("%s -> %s/%s/\n", str,
1628 pmu->name, alias->str);
1629 ok++;
1630 }
1631 parse_events_terms__delete(orig_head);
1632 }
1633 }
1634 }
1635
1636 if (parse_state->fake_pmu) {
1637 if (!parse_events_add_pmu(parse_state, list, str, head,
1638 true, true)) {
1639 pr_debug("%s -> %s/%s/\n", str, "fake_pmu", str);
1640 ok++;
1641 }
1642 }
1643
1644out_err:
1645 if (ok)
1646 *listp = list;
1647 else
1648 free(list);
1649
1650 parse_events_terms__delete(head);
1651 return ok ? 0 : -1;
1652}
1653
1654int parse_events__modifier_group(struct list_head *list,
1655 char *event_mod)
1656{
1657 return parse_events__modifier_event(list, event_mod, true);
1658}
1659
1660/*
1661 * Check if the two uncore PMUs are from the same uncore block
1662 * The format of the uncore PMU name is uncore_#blockname_#pmuidx
1663 */
1664static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b)
1665{
1666 char *end_a, *end_b;
1667
1668 end_a = strrchr(pmu_name_a, '_');
1669 end_b = strrchr(pmu_name_b, '_');
1670
1671 if (!end_a || !end_b)
1672 return false;
1673
1674 if ((end_a - pmu_name_a) != (end_b - pmu_name_b))
1675 return false;
1676
1677 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0);
1678}
1679
1680static int
1681parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list,
1682 struct parse_events_state *parse_state)
1683{
1684 struct evsel *evsel, *leader;
1685 uintptr_t *leaders;
1686 bool is_leader = true;
1687 int i, nr_pmu = 0, total_members, ret = 0;
1688
1689 leader = list_first_entry(list, struct evsel, core.node);
1690 evsel = list_last_entry(list, struct evsel, core.node);
1691 total_members = evsel->core.idx - leader->core.idx + 1;
1692
1693 leaders = calloc(total_members, sizeof(uintptr_t));
1694 if (WARN_ON(!leaders))
1695 return 0;
1696
1697 /*
1698 * Going through the whole group and doing sanity check.
1699 * All members must use alias, and be from the same uncore block.
1700 * Also, storing the leader events in an array.
1701 */
1702 __evlist__for_each_entry(list, evsel) {
1703
1704 /* Only split the uncore group which members use alias */
1705 if (!evsel->use_uncore_alias)
1706 goto out;
1707
1708 /* The events must be from the same uncore block */
1709 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name))
1710 goto out;
1711
1712 if (!is_leader)
1713 continue;
1714 /*
1715 * If the event's PMU name starts to repeat, it must be a new
1716 * event. That can be used to distinguish the leader from
1717 * other members, even they have the same event name.
1718 */
1719 if ((leader != evsel) &&
1720 !strcmp(leader->pmu_name, evsel->pmu_name)) {
1721 is_leader = false;
1722 continue;
1723 }
1724
1725 /* Store the leader event for each PMU */
1726 leaders[nr_pmu++] = (uintptr_t) evsel;
1727 }
1728
1729 /* only one event alias */
1730 if (nr_pmu == total_members) {
1731 parse_state->nr_groups--;
1732 goto handled;
1733 }
1734
1735 /*
1736 * An uncore event alias is a joint name which means the same event
1737 * runs on all PMUs of a block.
1738 * Perf doesn't support mixed events from different PMUs in the same
1739 * group. The big group has to be split into multiple small groups
1740 * which only include the events from the same PMU.
1741 *
1742 * Here the uncore event aliases must be from the same uncore block.
1743 * The number of PMUs must be same for each alias. The number of new
1744 * small groups equals to the number of PMUs.
1745 * Setting the leader event for corresponding members in each group.
1746 */
1747 i = 0;
1748 __evlist__for_each_entry(list, evsel) {
1749 if (i >= nr_pmu)
1750 i = 0;
1751 evsel__set_leader(evsel, (struct evsel *) leaders[i++]);
1752 }
1753
1754 /* The number of members and group name are same for each group */
1755 for (i = 0; i < nr_pmu; i++) {
1756 evsel = (struct evsel *) leaders[i];
1757 evsel->core.nr_members = total_members / nr_pmu;
1758 evsel->group_name = name ? strdup(name) : NULL;
1759 }
1760
1761 /* Take the new small groups into account */
1762 parse_state->nr_groups += nr_pmu - 1;
1763
1764handled:
1765 ret = 1;
1766out:
1767 free(leaders);
1768 return ret;
1769}
1770
1771__weak struct evsel *arch_evlist__leader(struct list_head *list)
1772{
1773 return list_first_entry(list, struct evsel, core.node);
1774}
1775
1776void parse_events__set_leader(char *name, struct list_head *list,
1777 struct parse_events_state *parse_state)
1778{
1779 struct evsel *leader;
1780
1781 if (list_empty(list)) {
1782 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1783 return;
1784 }
1785
1786 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state))
1787 return;
1788
1789 leader = arch_evlist__leader(list);
1790 __perf_evlist__set_leader(list, &leader->core);
1791 leader->group_name = name ? strdup(name) : NULL;
1792 list_move(&leader->core.node, list);
1793}
1794
1795/* list_event is assumed to point to malloc'ed memory */
1796void parse_events_update_lists(struct list_head *list_event,
1797 struct list_head *list_all)
1798{
1799 /*
1800 * Called for single event definition. Update the
1801 * 'all event' list, and reinit the 'single event'
1802 * list, for next event definition.
1803 */
1804 list_splice_tail(list_event, list_all);
1805 free(list_event);
1806}
1807
1808struct event_modifier {
1809 int eu;
1810 int ek;
1811 int eh;
1812 int eH;
1813 int eG;
1814 int eI;
1815 int precise;
1816 int precise_max;
1817 int exclude_GH;
1818 int sample_read;
1819 int pinned;
1820 int weak;
1821 int exclusive;
1822 int bpf_counter;
1823};
1824
1825static int get_event_modifier(struct event_modifier *mod, char *str,
1826 struct evsel *evsel)
1827{
1828 int eu = evsel ? evsel->core.attr.exclude_user : 0;
1829 int ek = evsel ? evsel->core.attr.exclude_kernel : 0;
1830 int eh = evsel ? evsel->core.attr.exclude_hv : 0;
1831 int eH = evsel ? evsel->core.attr.exclude_host : 0;
1832 int eG = evsel ? evsel->core.attr.exclude_guest : 0;
1833 int eI = evsel ? evsel->core.attr.exclude_idle : 0;
1834 int precise = evsel ? evsel->core.attr.precise_ip : 0;
1835 int precise_max = 0;
1836 int sample_read = 0;
1837 int pinned = evsel ? evsel->core.attr.pinned : 0;
1838 int exclusive = evsel ? evsel->core.attr.exclusive : 0;
1839
1840 int exclude = eu | ek | eh;
1841 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1842 int weak = 0;
1843 int bpf_counter = 0;
1844
1845 memset(mod, 0, sizeof(*mod));
1846
1847 while (*str) {
1848 if (*str == 'u') {
1849 if (!exclude)
1850 exclude = eu = ek = eh = 1;
1851 if (!exclude_GH && !perf_guest)
1852 eG = 1;
1853 eu = 0;
1854 } else if (*str == 'k') {
1855 if (!exclude)
1856 exclude = eu = ek = eh = 1;
1857 ek = 0;
1858 } else if (*str == 'h') {
1859 if (!exclude)
1860 exclude = eu = ek = eh = 1;
1861 eh = 0;
1862 } else if (*str == 'G') {
1863 if (!exclude_GH)
1864 exclude_GH = eG = eH = 1;
1865 eG = 0;
1866 } else if (*str == 'H') {
1867 if (!exclude_GH)
1868 exclude_GH = eG = eH = 1;
1869 eH = 0;
1870 } else if (*str == 'I') {
1871 eI = 1;
1872 } else if (*str == 'p') {
1873 precise++;
1874 /* use of precise requires exclude_guest */
1875 if (!exclude_GH)
1876 eG = 1;
1877 } else if (*str == 'P') {
1878 precise_max = 1;
1879 } else if (*str == 'S') {
1880 sample_read = 1;
1881 } else if (*str == 'D') {
1882 pinned = 1;
1883 } else if (*str == 'e') {
1884 exclusive = 1;
1885 } else if (*str == 'W') {
1886 weak = 1;
1887 } else if (*str == 'b') {
1888 bpf_counter = 1;
1889 } else
1890 break;
1891
1892 ++str;
1893 }
1894
1895 /*
1896 * precise ip:
1897 *
1898 * 0 - SAMPLE_IP can have arbitrary skid
1899 * 1 - SAMPLE_IP must have constant skid
1900 * 2 - SAMPLE_IP requested to have 0 skid
1901 * 3 - SAMPLE_IP must have 0 skid
1902 *
1903 * See also PERF_RECORD_MISC_EXACT_IP
1904 */
1905 if (precise > 3)
1906 return -EINVAL;
1907
1908 mod->eu = eu;
1909 mod->ek = ek;
1910 mod->eh = eh;
1911 mod->eH = eH;
1912 mod->eG = eG;
1913 mod->eI = eI;
1914 mod->precise = precise;
1915 mod->precise_max = precise_max;
1916 mod->exclude_GH = exclude_GH;
1917 mod->sample_read = sample_read;
1918 mod->pinned = pinned;
1919 mod->weak = weak;
1920 mod->bpf_counter = bpf_counter;
1921 mod->exclusive = exclusive;
1922
1923 return 0;
1924}
1925
1926/*
1927 * Basic modifier sanity check to validate it contains only one
1928 * instance of any modifier (apart from 'p') present.
1929 */
1930static int check_modifier(char *str)
1931{
1932 char *p = str;
1933
1934 /* The sizeof includes 0 byte as well. */
1935 if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1))
1936 return -1;
1937
1938 while (*p) {
1939 if (*p != 'p' && strchr(p + 1, *p))
1940 return -1;
1941 p++;
1942 }
1943
1944 return 0;
1945}
1946
1947int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1948{
1949 struct evsel *evsel;
1950 struct event_modifier mod;
1951
1952 if (str == NULL)
1953 return 0;
1954
1955 if (check_modifier(str))
1956 return -EINVAL;
1957
1958 if (!add && get_event_modifier(&mod, str, NULL))
1959 return -EINVAL;
1960
1961 __evlist__for_each_entry(list, evsel) {
1962 if (add && get_event_modifier(&mod, str, evsel))
1963 return -EINVAL;
1964
1965 evsel->core.attr.exclude_user = mod.eu;
1966 evsel->core.attr.exclude_kernel = mod.ek;
1967 evsel->core.attr.exclude_hv = mod.eh;
1968 evsel->core.attr.precise_ip = mod.precise;
1969 evsel->core.attr.exclude_host = mod.eH;
1970 evsel->core.attr.exclude_guest = mod.eG;
1971 evsel->core.attr.exclude_idle = mod.eI;
1972 evsel->exclude_GH = mod.exclude_GH;
1973 evsel->sample_read = mod.sample_read;
1974 evsel->precise_max = mod.precise_max;
1975 evsel->weak_group = mod.weak;
1976 evsel->bpf_counter = mod.bpf_counter;
1977
1978 if (evsel__is_group_leader(evsel)) {
1979 evsel->core.attr.pinned = mod.pinned;
1980 evsel->core.attr.exclusive = mod.exclusive;
1981 }
1982 }
1983
1984 return 0;
1985}
1986
1987int parse_events_name(struct list_head *list, const char *name)
1988{
1989 struct evsel *evsel;
1990
1991 __evlist__for_each_entry(list, evsel) {
1992 if (!evsel->name)
1993 evsel->name = strdup(name);
1994 }
1995
1996 return 0;
1997}
1998
1999static int
2000comp_pmu(const void *p1, const void *p2)
2001{
2002 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
2003 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
2004
2005 return strcasecmp(pmu1->symbol, pmu2->symbol);
2006}
2007
2008static void perf_pmu__parse_cleanup(void)
2009{
2010 if (perf_pmu_events_list_num > 0) {
2011 struct perf_pmu_event_symbol *p;
2012 int i;
2013
2014 for (i = 0; i < perf_pmu_events_list_num; i++) {
2015 p = perf_pmu_events_list + i;
2016 zfree(&p->symbol);
2017 }
2018 zfree(&perf_pmu_events_list);
2019 perf_pmu_events_list_num = 0;
2020 }
2021}
2022
2023#define SET_SYMBOL(str, stype) \
2024do { \
2025 p->symbol = str; \
2026 if (!p->symbol) \
2027 goto err; \
2028 p->type = stype; \
2029} while (0)
2030
2031/*
2032 * Read the pmu events list from sysfs
2033 * Save it into perf_pmu_events_list
2034 */
2035static void perf_pmu__parse_init(void)
2036{
2037
2038 struct perf_pmu *pmu = NULL;
2039 struct perf_pmu_alias *alias;
2040 int len = 0;
2041
2042 pmu = NULL;
2043 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
2044 list_for_each_entry(alias, &pmu->aliases, list) {
2045 char *tmp = strchr(alias->name, '-');
2046
2047 if (tmp) {
2048 char *tmp2 = NULL;
2049
2050 tmp2 = strchr(tmp + 1, '-');
2051 len++;
2052 if (tmp2)
2053 len++;
2054 }
2055
2056 len++;
2057 }
2058 }
2059
2060 if (len == 0) {
2061 perf_pmu_events_list_num = -1;
2062 return;
2063 }
2064 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
2065 if (!perf_pmu_events_list)
2066 return;
2067 perf_pmu_events_list_num = len;
2068
2069 len = 0;
2070 pmu = NULL;
2071 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
2072 list_for_each_entry(alias, &pmu->aliases, list) {
2073 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
2074 char *tmp = strchr(alias->name, '-');
2075 char *tmp2 = NULL;
2076
2077 if (tmp)
2078 tmp2 = strchr(tmp + 1, '-');
2079 if (tmp2) {
2080 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
2081 PMU_EVENT_SYMBOL_PREFIX);
2082 p++;
2083 tmp++;
2084 SET_SYMBOL(strndup(tmp, tmp2 - tmp), PMU_EVENT_SYMBOL_SUFFIX);
2085 p++;
2086 SET_SYMBOL(strdup(++tmp2), PMU_EVENT_SYMBOL_SUFFIX2);
2087 len += 3;
2088 } else if (tmp) {
2089 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
2090 PMU_EVENT_SYMBOL_PREFIX);
2091 p++;
2092 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
2093 len += 2;
2094 } else {
2095 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
2096 len++;
2097 }
2098 }
2099 }
2100 qsort(perf_pmu_events_list, len,
2101 sizeof(struct perf_pmu_event_symbol), comp_pmu);
2102
2103 return;
2104err:
2105 perf_pmu__parse_cleanup();
2106}
2107
2108/*
2109 * This function injects special term in
2110 * perf_pmu_events_list so the test code
2111 * can check on this functionality.
2112 */
2113int perf_pmu__test_parse_init(void)
2114{
2115 struct perf_pmu_event_symbol *list, *tmp, symbols[] = {
2116 {(char *)"read", PMU_EVENT_SYMBOL},
2117 {(char *)"event", PMU_EVENT_SYMBOL_PREFIX},
2118 {(char *)"two", PMU_EVENT_SYMBOL_SUFFIX},
2119 {(char *)"hyphen", PMU_EVENT_SYMBOL_SUFFIX},
2120 {(char *)"hyph", PMU_EVENT_SYMBOL_SUFFIX2},
2121 };
2122 unsigned long i, j;
2123
2124 tmp = list = malloc(sizeof(*list) * ARRAY_SIZE(symbols));
2125 if (!list)
2126 return -ENOMEM;
2127
2128 for (i = 0; i < ARRAY_SIZE(symbols); i++, tmp++) {
2129 tmp->type = symbols[i].type;
2130 tmp->symbol = strdup(symbols[i].symbol);
2131 if (!tmp->symbol)
2132 goto err_free;
2133 }
2134
2135 perf_pmu_events_list = list;
2136 perf_pmu_events_list_num = ARRAY_SIZE(symbols);
2137
2138 qsort(perf_pmu_events_list, ARRAY_SIZE(symbols),
2139 sizeof(struct perf_pmu_event_symbol), comp_pmu);
2140 return 0;
2141
2142err_free:
2143 for (j = 0, tmp = list; j < i; j++, tmp++)
2144 free(tmp->symbol);
2145 free(list);
2146 return -ENOMEM;
2147}
2148
2149enum perf_pmu_event_symbol_type
2150perf_pmu__parse_check(const char *name)
2151{
2152 struct perf_pmu_event_symbol p, *r;
2153
2154 /* scan kernel pmu events from sysfs if needed */
2155 if (perf_pmu_events_list_num == 0)
2156 perf_pmu__parse_init();
2157 /*
2158 * name "cpu" could be prefix of cpu-cycles or cpu// events.
2159 * cpu-cycles has been handled by hardcode.
2160 * So it must be cpu// events, not kernel pmu event.
2161 */
2162 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
2163 return PMU_EVENT_SYMBOL_ERR;
2164
2165 p.symbol = strdup(name);
2166 r = bsearch(&p, perf_pmu_events_list,
2167 (size_t) perf_pmu_events_list_num,
2168 sizeof(struct perf_pmu_event_symbol), comp_pmu);
2169 zfree(&p.symbol);
2170 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
2171}
2172
2173static int parse_events__scanner(const char *str,
2174 struct parse_events_state *parse_state)
2175{
2176 YY_BUFFER_STATE buffer;
2177 void *scanner;
2178 int ret;
2179
2180 ret = parse_events_lex_init_extra(parse_state, &scanner);
2181 if (ret)
2182 return ret;
2183
2184 buffer = parse_events__scan_string(str, scanner);
2185
2186#ifdef PARSER_DEBUG
2187 parse_events_debug = 1;
2188 parse_events_set_debug(1, scanner);
2189#endif
2190 ret = parse_events_parse(parse_state, scanner);
2191
2192 parse_events__flush_buffer(buffer, scanner);
2193 parse_events__delete_buffer(buffer, scanner);
2194 parse_events_lex_destroy(scanner);
2195 return ret;
2196}
2197
2198/*
2199 * parse event config string, return a list of event terms.
2200 */
2201int parse_events_terms(struct list_head *terms, const char *str)
2202{
2203 struct parse_events_state parse_state = {
2204 .terms = NULL,
2205 .stoken = PE_START_TERMS,
2206 };
2207 int ret;
2208
2209 ret = parse_events__scanner(str, &parse_state);
2210 perf_pmu__parse_cleanup();
2211
2212 if (!ret) {
2213 list_splice(parse_state.terms, terms);
2214 zfree(&parse_state.terms);
2215 return 0;
2216 }
2217
2218 parse_events_terms__delete(parse_state.terms);
2219 return ret;
2220}
2221
2222static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state,
2223 const char *str, char *pmu_name,
2224 struct list_head *list)
2225{
2226 struct parse_events_state ps = {
2227 .list = LIST_HEAD_INIT(ps.list),
2228 .stoken = PE_START_EVENTS,
2229 .hybrid_pmu_name = pmu_name,
2230 .idx = parse_state->idx,
2231 };
2232 int ret;
2233
2234 ret = parse_events__scanner(str, &ps);
2235 perf_pmu__parse_cleanup();
2236
2237 if (!ret) {
2238 if (!list_empty(&ps.list)) {
2239 list_splice(&ps.list, list);
2240 parse_state->idx = ps.idx;
2241 return 0;
2242 } else
2243 return -1;
2244 }
2245
2246 return ret;
2247}
2248
2249int __parse_events(struct evlist *evlist, const char *str,
2250 struct parse_events_error *err, struct perf_pmu *fake_pmu)
2251{
2252 struct parse_events_state parse_state = {
2253 .list = LIST_HEAD_INIT(parse_state.list),
2254 .idx = evlist->core.nr_entries,
2255 .error = err,
2256 .evlist = evlist,
2257 .stoken = PE_START_EVENTS,
2258 .fake_pmu = fake_pmu,
2259 };
2260 int ret;
2261
2262 ret = parse_events__scanner(str, &parse_state);
2263 perf_pmu__parse_cleanup();
2264
2265 if (!ret && list_empty(&parse_state.list)) {
2266 WARN_ONCE(true, "WARNING: event parser found nothing\n");
2267 return -1;
2268 }
2269
2270 /*
2271 * Add list to the evlist even with errors to allow callers to clean up.
2272 */
2273 evlist__splice_list_tail(evlist, &parse_state.list);
2274
2275 if (!ret) {
2276 struct evsel *last;
2277
2278 evlist->core.nr_groups += parse_state.nr_groups;
2279 last = evlist__last(evlist);
2280 last->cmdline_group_boundary = true;
2281
2282 return 0;
2283 }
2284
2285 /*
2286 * There are 2 users - builtin-record and builtin-test objects.
2287 * Both call evlist__delete in case of error, so we dont
2288 * need to bother.
2289 */
2290 return ret;
2291}
2292
2293int parse_event(struct evlist *evlist, const char *str)
2294{
2295 struct parse_events_error err;
2296 int ret;
2297
2298 parse_events_error__init(&err);
2299 ret = parse_events(evlist, str, &err);
2300 parse_events_error__exit(&err);
2301 return ret;
2302}
2303
2304void parse_events_error__init(struct parse_events_error *err)
2305{
2306 bzero(err, sizeof(*err));
2307}
2308
2309void parse_events_error__exit(struct parse_events_error *err)
2310{
2311 zfree(&err->str);
2312 zfree(&err->help);
2313 zfree(&err->first_str);
2314 zfree(&err->first_help);
2315}
2316
2317void parse_events_error__handle(struct parse_events_error *err, int idx,
2318 char *str, char *help)
2319{
2320 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n"))
2321 goto out_free;
2322 switch (err->num_errors) {
2323 case 0:
2324 err->idx = idx;
2325 err->str = str;
2326 err->help = help;
2327 break;
2328 case 1:
2329 err->first_idx = err->idx;
2330 err->idx = idx;
2331 err->first_str = err->str;
2332 err->str = str;
2333 err->first_help = err->help;
2334 err->help = help;
2335 break;
2336 default:
2337 pr_debug("Multiple errors dropping message: %s (%s)\n",
2338 err->str, err->help);
2339 free(err->str);
2340 err->str = str;
2341 free(err->help);
2342 err->help = help;
2343 break;
2344 }
2345 err->num_errors++;
2346 return;
2347
2348out_free:
2349 free(str);
2350 free(help);
2351}
2352
2353#define MAX_WIDTH 1000
2354static int get_term_width(void)
2355{
2356 struct winsize ws;
2357
2358 get_term_dimensions(&ws);
2359 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
2360}
2361
2362static void __parse_events_error__print(int err_idx, const char *err_str,
2363 const char *err_help, const char *event)
2364{
2365 const char *str = "invalid or unsupported event: ";
2366 char _buf[MAX_WIDTH];
2367 char *buf = (char *) event;
2368 int idx = 0;
2369 if (err_str) {
2370 /* -2 for extra '' in the final fprintf */
2371 int width = get_term_width() - 2;
2372 int len_event = strlen(event);
2373 int len_str, max_len, cut = 0;
2374
2375 /*
2376 * Maximum error index indent, we will cut
2377 * the event string if it's bigger.
2378 */
2379 int max_err_idx = 13;
2380
2381 /*
2382 * Let's be specific with the message when
2383 * we have the precise error.
2384 */
2385 str = "event syntax error: ";
2386 len_str = strlen(str);
2387 max_len = width - len_str;
2388
2389 buf = _buf;
2390
2391 /* We're cutting from the beginning. */
2392 if (err_idx > max_err_idx)
2393 cut = err_idx - max_err_idx;
2394
2395 strncpy(buf, event + cut, max_len);
2396
2397 /* Mark cut parts with '..' on both sides. */
2398 if (cut)
2399 buf[0] = buf[1] = '.';
2400
2401 if ((len_event - cut) > max_len) {
2402 buf[max_len - 1] = buf[max_len - 2] = '.';
2403 buf[max_len] = 0;
2404 }
2405
2406 idx = len_str + err_idx - cut;
2407 }
2408
2409 fprintf(stderr, "%s'%s'\n", str, buf);
2410 if (idx) {
2411 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);
2412 if (err_help)
2413 fprintf(stderr, "\n%s\n", err_help);
2414 }
2415}
2416
2417void parse_events_error__print(struct parse_events_error *err,
2418 const char *event)
2419{
2420 if (!err->num_errors)
2421 return;
2422
2423 __parse_events_error__print(err->idx, err->str, err->help, event);
2424
2425 if (err->num_errors > 1) {
2426 fputs("\nInitial error:\n", stderr);
2427 __parse_events_error__print(err->first_idx, err->first_str,
2428 err->first_help, event);
2429 }
2430}
2431
2432#undef MAX_WIDTH
2433
2434int parse_events_option(const struct option *opt, const char *str,
2435 int unset __maybe_unused)
2436{
2437 struct evlist *evlist = *(struct evlist **)opt->value;
2438 struct parse_events_error err;
2439 int ret;
2440
2441 parse_events_error__init(&err);
2442 ret = parse_events(evlist, str, &err);
2443
2444 if (ret) {
2445 parse_events_error__print(&err, str);
2446 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2447 }
2448 parse_events_error__exit(&err);
2449
2450 return ret;
2451}
2452
2453int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)
2454{
2455 struct evlist **evlistp = opt->value;
2456 int ret;
2457
2458 if (*evlistp == NULL) {
2459 *evlistp = evlist__new();
2460
2461 if (*evlistp == NULL) {
2462 fprintf(stderr, "Not enough memory to create evlist\n");
2463 return -1;
2464 }
2465 }
2466
2467 ret = parse_events_option(opt, str, unset);
2468 if (ret) {
2469 evlist__delete(*evlistp);
2470 *evlistp = NULL;
2471 }
2472
2473 return ret;
2474}
2475
2476static int
2477foreach_evsel_in_last_glob(struct evlist *evlist,
2478 int (*func)(struct evsel *evsel,
2479 const void *arg),
2480 const void *arg)
2481{
2482 struct evsel *last = NULL;
2483 int err;
2484
2485 /*
2486 * Don't return when list_empty, give func a chance to report
2487 * error when it found last == NULL.
2488 *
2489 * So no need to WARN here, let *func do this.
2490 */
2491 if (evlist->core.nr_entries > 0)
2492 last = evlist__last(evlist);
2493
2494 do {
2495 err = (*func)(last, arg);
2496 if (err)
2497 return -1;
2498 if (!last)
2499 return 0;
2500
2501 if (last->core.node.prev == &evlist->core.entries)
2502 return 0;
2503 last = list_entry(last->core.node.prev, struct evsel, core.node);
2504 } while (!last->cmdline_group_boundary);
2505
2506 return 0;
2507}
2508
2509static int set_filter(struct evsel *evsel, const void *arg)
2510{
2511 const char *str = arg;
2512 bool found = false;
2513 int nr_addr_filters = 0;
2514 struct perf_pmu *pmu = NULL;
2515
2516 if (evsel == NULL) {
2517 fprintf(stderr,
2518 "--filter option should follow a -e tracepoint or HW tracer option\n");
2519 return -1;
2520 }
2521
2522 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2523 if (evsel__append_tp_filter(evsel, str) < 0) {
2524 fprintf(stderr,
2525 "not enough memory to hold filter string\n");
2526 return -1;
2527 }
2528
2529 return 0;
2530 }
2531
2532 while ((pmu = perf_pmu__scan(pmu)) != NULL)
2533 if (pmu->type == evsel->core.attr.type) {
2534 found = true;
2535 break;
2536 }
2537
2538 if (found)
2539 perf_pmu__scan_file(pmu, "nr_addr_filters",
2540 "%d", &nr_addr_filters);
2541
2542 if (!nr_addr_filters) {
2543 fprintf(stderr,
2544 "This CPU does not support address filtering\n");
2545 return -1;
2546 }
2547
2548 if (evsel__append_addr_filter(evsel, str) < 0) {
2549 fprintf(stderr,
2550 "not enough memory to hold filter string\n");
2551 return -1;
2552 }
2553
2554 return 0;
2555}
2556
2557int parse_filter(const struct option *opt, const char *str,
2558 int unset __maybe_unused)
2559{
2560 struct evlist *evlist = *(struct evlist **)opt->value;
2561
2562 return foreach_evsel_in_last_glob(evlist, set_filter,
2563 (const void *)str);
2564}
2565
2566static int add_exclude_perf_filter(struct evsel *evsel,
2567 const void *arg __maybe_unused)
2568{
2569 char new_filter[64];
2570
2571 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2572 fprintf(stderr,
2573 "--exclude-perf option should follow a -e tracepoint option\n");
2574 return -1;
2575 }
2576
2577 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2578
2579 if (evsel__append_tp_filter(evsel, new_filter) < 0) {
2580 fprintf(stderr,
2581 "not enough memory to hold filter string\n");
2582 return -1;
2583 }
2584
2585 return 0;
2586}
2587
2588int exclude_perf(const struct option *opt,
2589 const char *arg __maybe_unused,
2590 int unset __maybe_unused)
2591{
2592 struct evlist *evlist = *(struct evlist **)opt->value;
2593
2594 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2595 NULL);
2596}
2597
2598int parse_events__is_hardcoded_term(struct parse_events_term *term)
2599{
2600 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2601}
2602
2603static int new_term(struct parse_events_term **_term,
2604 struct parse_events_term *temp,
2605 char *str, u64 num)
2606{
2607 struct parse_events_term *term;
2608
2609 term = malloc(sizeof(*term));
2610 if (!term)
2611 return -ENOMEM;
2612
2613 *term = *temp;
2614 INIT_LIST_HEAD(&term->list);
2615 term->weak = false;
2616
2617 switch (term->type_val) {
2618 case PARSE_EVENTS__TERM_TYPE_NUM:
2619 term->val.num = num;
2620 break;
2621 case PARSE_EVENTS__TERM_TYPE_STR:
2622 term->val.str = str;
2623 break;
2624 default:
2625 free(term);
2626 return -EINVAL;
2627 }
2628
2629 *_term = term;
2630 return 0;
2631}
2632
2633int parse_events_term__num(struct parse_events_term **term,
2634 int type_term, char *config, u64 num,
2635 bool no_value,
2636 void *loc_term_, void *loc_val_)
2637{
2638 YYLTYPE *loc_term = loc_term_;
2639 YYLTYPE *loc_val = loc_val_;
2640
2641 struct parse_events_term temp = {
2642 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2643 .type_term = type_term,
2644 .config = config ? : strdup(config_term_names[type_term]),
2645 .no_value = no_value,
2646 .err_term = loc_term ? loc_term->first_column : 0,
2647 .err_val = loc_val ? loc_val->first_column : 0,
2648 };
2649
2650 return new_term(term, &temp, NULL, num);
2651}
2652
2653int parse_events_term__str(struct parse_events_term **term,
2654 int type_term, char *config, char *str,
2655 void *loc_term_, void *loc_val_)
2656{
2657 YYLTYPE *loc_term = loc_term_;
2658 YYLTYPE *loc_val = loc_val_;
2659
2660 struct parse_events_term temp = {
2661 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2662 .type_term = type_term,
2663 .config = config,
2664 .err_term = loc_term ? loc_term->first_column : 0,
2665 .err_val = loc_val ? loc_val->first_column : 0,
2666 };
2667
2668 return new_term(term, &temp, str, 0);
2669}
2670
2671int parse_events_term__sym_hw(struct parse_events_term **term,
2672 char *config, unsigned idx)
2673{
2674 struct event_symbol *sym;
2675 char *str;
2676 struct parse_events_term temp = {
2677 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2678 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
2679 .config = config,
2680 };
2681
2682 if (!temp.config) {
2683 temp.config = strdup("event");
2684 if (!temp.config)
2685 return -ENOMEM;
2686 }
2687 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2688 sym = &event_symbols_hw[idx];
2689
2690 str = strdup(sym->symbol);
2691 if (!str)
2692 return -ENOMEM;
2693 return new_term(term, &temp, str, 0);
2694}
2695
2696int parse_events_term__clone(struct parse_events_term **new,
2697 struct parse_events_term *term)
2698{
2699 char *str;
2700 struct parse_events_term temp = {
2701 .type_val = term->type_val,
2702 .type_term = term->type_term,
2703 .config = NULL,
2704 .err_term = term->err_term,
2705 .err_val = term->err_val,
2706 };
2707
2708 if (term->config) {
2709 temp.config = strdup(term->config);
2710 if (!temp.config)
2711 return -ENOMEM;
2712 }
2713 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2714 return new_term(new, &temp, NULL, term->val.num);
2715
2716 str = strdup(term->val.str);
2717 if (!str)
2718 return -ENOMEM;
2719 return new_term(new, &temp, str, 0);
2720}
2721
2722void parse_events_term__delete(struct parse_events_term *term)
2723{
2724 if (term->array.nr_ranges)
2725 zfree(&term->array.ranges);
2726
2727 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
2728 zfree(&term->val.str);
2729
2730 zfree(&term->config);
2731 free(term);
2732}
2733
2734int parse_events_copy_term_list(struct list_head *old,
2735 struct list_head **new)
2736{
2737 struct parse_events_term *term, *n;
2738 int ret;
2739
2740 if (!old) {
2741 *new = NULL;
2742 return 0;
2743 }
2744
2745 *new = malloc(sizeof(struct list_head));
2746 if (!*new)
2747 return -ENOMEM;
2748 INIT_LIST_HEAD(*new);
2749
2750 list_for_each_entry (term, old, list) {
2751 ret = parse_events_term__clone(&n, term);
2752 if (ret)
2753 return ret;
2754 list_add_tail(&n->list, *new);
2755 }
2756 return 0;
2757}
2758
2759void parse_events_terms__purge(struct list_head *terms)
2760{
2761 struct parse_events_term *term, *h;
2762
2763 list_for_each_entry_safe(term, h, terms, list) {
2764 list_del_init(&term->list);
2765 parse_events_term__delete(term);
2766 }
2767}
2768
2769void parse_events_terms__delete(struct list_head *terms)
2770{
2771 if (!terms)
2772 return;
2773 parse_events_terms__purge(terms);
2774 free(terms);
2775}
2776
2777void parse_events__clear_array(struct parse_events_array *a)
2778{
2779 zfree(&a->ranges);
2780}
2781
2782void parse_events_evlist_error(struct parse_events_state *parse_state,
2783 int idx, const char *str)
2784{
2785 if (!parse_state->error)
2786 return;
2787
2788 parse_events_error__handle(parse_state->error, idx, strdup(str), NULL);
2789}
2790
2791static void config_terms_list(char *buf, size_t buf_sz)
2792{
2793 int i;
2794 bool first = true;
2795
2796 buf[0] = '\0';
2797 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2798 const char *name = config_term_names[i];
2799
2800 if (!config_term_avail(i, NULL))
2801 continue;
2802 if (!name)
2803 continue;
2804 if (name[0] == '<')
2805 continue;
2806
2807 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2808 return;
2809
2810 if (!first)
2811 strcat(buf, ",");
2812 else
2813 first = false;
2814 strcat(buf, name);
2815 }
2816}
2817
2818/*
2819 * Return string contains valid config terms of an event.
2820 * @additional_terms: For terms such as PMU sysfs terms.
2821 */
2822char *parse_events_formats_error_string(char *additional_terms)
2823{
2824 char *str;
2825 /* "no-overwrite" is the longest name */
2826 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2827 (sizeof("no-overwrite") - 1)];
2828
2829 config_terms_list(static_terms, sizeof(static_terms));
2830 /* valid terms */
2831 if (additional_terms) {
2832 if (asprintf(&str, "valid terms: %s,%s",
2833 additional_terms, static_terms) < 0)
2834 goto fail;
2835 } else {
2836 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2837 goto fail;
2838 }
2839 return str;
2840
2841fail:
2842 return NULL;
2843}
2844
2845struct evsel *parse_events__add_event_hybrid(struct list_head *list, int *idx,
2846 struct perf_event_attr *attr,
2847 const char *name,
2848 const char *metric_id,
2849 struct perf_pmu *pmu,
2850 struct list_head *config_terms)
2851{
2852 return __add_event(list, idx, attr, /*init_attr=*/true, name, metric_id,
2853 pmu, config_terms, /*auto_merge_stats=*/false,
2854 /*cpu_list=*/NULL);
2855}