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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
15struct event_symbol {
16 u8 type;
17 u64 config;
18 const char *symbol;
19 const char *alias;
20};
21
22enum event_result {
23 EVT_FAILED,
24 EVT_HANDLED,
25 EVT_HANDLED_ALL
26};
27
28char debugfs_path[MAXPATHLEN];
29
30#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
31#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
32
33static struct event_symbol event_symbols[] = {
34 { CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
35 { CHW(STALLED_CYCLES_FRONTEND), "stalled-cycles-frontend", "idle-cycles-frontend" },
36 { CHW(STALLED_CYCLES_BACKEND), "stalled-cycles-backend", "idle-cycles-backend" },
37 { CHW(INSTRUCTIONS), "instructions", "" },
38 { CHW(CACHE_REFERENCES), "cache-references", "" },
39 { CHW(CACHE_MISSES), "cache-misses", "" },
40 { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
41 { CHW(BRANCH_MISSES), "branch-misses", "" },
42 { CHW(BUS_CYCLES), "bus-cycles", "" },
43
44 { CSW(CPU_CLOCK), "cpu-clock", "" },
45 { CSW(TASK_CLOCK), "task-clock", "" },
46 { CSW(PAGE_FAULTS), "page-faults", "faults" },
47 { CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
48 { CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
49 { CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
50 { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
51 { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
52 { CSW(EMULATION_FAULTS), "emulation-faults", "" },
53};
54
55#define __PERF_EVENT_FIELD(config, name) \
56 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
57
58#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
59#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
60#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
61#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
62
63static const char *hw_event_names[PERF_COUNT_HW_MAX] = {
64 "cycles",
65 "instructions",
66 "cache-references",
67 "cache-misses",
68 "branches",
69 "branch-misses",
70 "bus-cycles",
71 "stalled-cycles-frontend",
72 "stalled-cycles-backend",
73};
74
75static const char *sw_event_names[PERF_COUNT_SW_MAX] = {
76 "cpu-clock",
77 "task-clock",
78 "page-faults",
79 "context-switches",
80 "CPU-migrations",
81 "minor-faults",
82 "major-faults",
83 "alignment-faults",
84 "emulation-faults",
85};
86
87#define MAX_ALIASES 8
88
89static const char *hw_cache[PERF_COUNT_HW_CACHE_MAX][MAX_ALIASES] = {
90 { "L1-dcache", "l1-d", "l1d", "L1-data", },
91 { "L1-icache", "l1-i", "l1i", "L1-instruction", },
92 { "LLC", "L2", },
93 { "dTLB", "d-tlb", "Data-TLB", },
94 { "iTLB", "i-tlb", "Instruction-TLB", },
95 { "branch", "branches", "bpu", "btb", "bpc", },
96 { "node", },
97};
98
99static const char *hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][MAX_ALIASES] = {
100 { "load", "loads", "read", },
101 { "store", "stores", "write", },
102 { "prefetch", "prefetches", "speculative-read", "speculative-load", },
103};
104
105static const char *hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
106 [MAX_ALIASES] = {
107 { "refs", "Reference", "ops", "access", },
108 { "misses", "miss", },
109};
110
111#define C(x) PERF_COUNT_HW_CACHE_##x
112#define CACHE_READ (1 << C(OP_READ))
113#define CACHE_WRITE (1 << C(OP_WRITE))
114#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
115#define COP(x) (1 << x)
116
117/*
118 * cache operartion stat
119 * L1I : Read and prefetch only
120 * ITLB and BPU : Read-only
121 */
122static unsigned long hw_cache_stat[C(MAX)] = {
123 [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
124 [C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
125 [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
126 [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
127 [C(ITLB)] = (CACHE_READ),
128 [C(BPU)] = (CACHE_READ),
129 [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
130};
131
132#define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
133 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
134 if (sys_dirent.d_type == DT_DIR && \
135 (strcmp(sys_dirent.d_name, ".")) && \
136 (strcmp(sys_dirent.d_name, "..")))
137
138static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
139{
140 char evt_path[MAXPATHLEN];
141 int fd;
142
143 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
144 sys_dir->d_name, evt_dir->d_name);
145 fd = open(evt_path, O_RDONLY);
146 if (fd < 0)
147 return -EINVAL;
148 close(fd);
149
150 return 0;
151}
152
153#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
154 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
155 if (evt_dirent.d_type == DT_DIR && \
156 (strcmp(evt_dirent.d_name, ".")) && \
157 (strcmp(evt_dirent.d_name, "..")) && \
158 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
159
160#define MAX_EVENT_LENGTH 512
161
162
163struct tracepoint_path *tracepoint_id_to_path(u64 config)
164{
165 struct tracepoint_path *path = NULL;
166 DIR *sys_dir, *evt_dir;
167 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
168 char id_buf[4];
169 int fd;
170 u64 id;
171 char evt_path[MAXPATHLEN];
172 char dir_path[MAXPATHLEN];
173
174 if (debugfs_valid_mountpoint(debugfs_path))
175 return NULL;
176
177 sys_dir = opendir(debugfs_path);
178 if (!sys_dir)
179 return NULL;
180
181 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
182
183 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
184 sys_dirent.d_name);
185 evt_dir = opendir(dir_path);
186 if (!evt_dir)
187 continue;
188
189 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
190
191 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
192 evt_dirent.d_name);
193 fd = open(evt_path, O_RDONLY);
194 if (fd < 0)
195 continue;
196 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
197 close(fd);
198 continue;
199 }
200 close(fd);
201 id = atoll(id_buf);
202 if (id == config) {
203 closedir(evt_dir);
204 closedir(sys_dir);
205 path = zalloc(sizeof(*path));
206 path->system = malloc(MAX_EVENT_LENGTH);
207 if (!path->system) {
208 free(path);
209 return NULL;
210 }
211 path->name = malloc(MAX_EVENT_LENGTH);
212 if (!path->name) {
213 free(path->system);
214 free(path);
215 return NULL;
216 }
217 strncpy(path->system, sys_dirent.d_name,
218 MAX_EVENT_LENGTH);
219 strncpy(path->name, evt_dirent.d_name,
220 MAX_EVENT_LENGTH);
221 return path;
222 }
223 }
224 closedir(evt_dir);
225 }
226
227 closedir(sys_dir);
228 return NULL;
229}
230
231#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
232static const char *tracepoint_id_to_name(u64 config)
233{
234 static char buf[TP_PATH_LEN];
235 struct tracepoint_path *path;
236
237 path = tracepoint_id_to_path(config);
238 if (path) {
239 snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
240 free(path->name);
241 free(path->system);
242 free(path);
243 } else
244 snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
245
246 return buf;
247}
248
249static int is_cache_op_valid(u8 cache_type, u8 cache_op)
250{
251 if (hw_cache_stat[cache_type] & COP(cache_op))
252 return 1; /* valid */
253 else
254 return 0; /* invalid */
255}
256
257static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
258{
259 static char name[50];
260
261 if (cache_result) {
262 sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
263 hw_cache_op[cache_op][0],
264 hw_cache_result[cache_result][0]);
265 } else {
266 sprintf(name, "%s-%s", hw_cache[cache_type][0],
267 hw_cache_op[cache_op][1]);
268 }
269
270 return name;
271}
272
273const char *event_type(int type)
274{
275 switch (type) {
276 case PERF_TYPE_HARDWARE:
277 return "hardware";
278
279 case PERF_TYPE_SOFTWARE:
280 return "software";
281
282 case PERF_TYPE_TRACEPOINT:
283 return "tracepoint";
284
285 case PERF_TYPE_HW_CACHE:
286 return "hardware-cache";
287
288 default:
289 break;
290 }
291
292 return "unknown";
293}
294
295const char *event_name(struct perf_evsel *evsel)
296{
297 u64 config = evsel->attr.config;
298 int type = evsel->attr.type;
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 if (config < PERF_COUNT_HW_MAX && hw_event_names[config])
318 return hw_event_names[config];
319 return "unknown-hardware";
320
321 case PERF_TYPE_HW_CACHE: {
322 u8 cache_type, cache_op, cache_result;
323
324 cache_type = (config >> 0) & 0xff;
325 if (cache_type > PERF_COUNT_HW_CACHE_MAX)
326 return "unknown-ext-hardware-cache-type";
327
328 cache_op = (config >> 8) & 0xff;
329 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
330 return "unknown-ext-hardware-cache-op";
331
332 cache_result = (config >> 16) & 0xff;
333 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
334 return "unknown-ext-hardware-cache-result";
335
336 if (!is_cache_op_valid(cache_type, cache_op))
337 return "invalid-cache";
338
339 return event_cache_name(cache_type, cache_op, cache_result);
340 }
341
342 case PERF_TYPE_SOFTWARE:
343 if (config < PERF_COUNT_SW_MAX && sw_event_names[config])
344 return sw_event_names[config];
345 return "unknown-software";
346
347 case PERF_TYPE_TRACEPOINT:
348 return tracepoint_id_to_name(config);
349
350 default:
351 break;
352 }
353
354 return "unknown";
355}
356
357static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
358{
359 int i, j;
360 int n, longest = -1;
361
362 for (i = 0; i < size; i++) {
363 for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
364 n = strlen(names[i][j]);
365 if (n > longest && !strncasecmp(*str, names[i][j], n))
366 longest = n;
367 }
368 if (longest > 0) {
369 *str += longest;
370 return i;
371 }
372 }
373
374 return -1;
375}
376
377static enum event_result
378parse_generic_hw_event(const char **str, struct perf_event_attr *attr)
379{
380 const char *s = *str;
381 int cache_type = -1, cache_op = -1, cache_result = -1;
382
383 cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX);
384 /*
385 * No fallback - if we cannot get a clear cache type
386 * then bail out:
387 */
388 if (cache_type == -1)
389 return EVT_FAILED;
390
391 while ((cache_op == -1 || cache_result == -1) && *s == '-') {
392 ++s;
393
394 if (cache_op == -1) {
395 cache_op = parse_aliases(&s, hw_cache_op,
396 PERF_COUNT_HW_CACHE_OP_MAX);
397 if (cache_op >= 0) {
398 if (!is_cache_op_valid(cache_type, cache_op))
399 return EVT_FAILED;
400 continue;
401 }
402 }
403
404 if (cache_result == -1) {
405 cache_result = parse_aliases(&s, hw_cache_result,
406 PERF_COUNT_HW_CACHE_RESULT_MAX);
407 if (cache_result >= 0)
408 continue;
409 }
410
411 /*
412 * Can't parse this as a cache op or result, so back up
413 * to the '-'.
414 */
415 --s;
416 break;
417 }
418
419 /*
420 * Fall back to reads:
421 */
422 if (cache_op == -1)
423 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
424
425 /*
426 * Fall back to accesses:
427 */
428 if (cache_result == -1)
429 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
430
431 attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
432 attr->type = PERF_TYPE_HW_CACHE;
433
434 *str = s;
435 return EVT_HANDLED;
436}
437
438static enum event_result
439parse_single_tracepoint_event(char *sys_name,
440 const char *evt_name,
441 unsigned int evt_length,
442 struct perf_event_attr *attr,
443 const char **strp)
444{
445 char evt_path[MAXPATHLEN];
446 char id_buf[4];
447 u64 id;
448 int fd;
449
450 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
451 sys_name, evt_name);
452
453 fd = open(evt_path, O_RDONLY);
454 if (fd < 0)
455 return EVT_FAILED;
456
457 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
458 close(fd);
459 return EVT_FAILED;
460 }
461
462 close(fd);
463 id = atoll(id_buf);
464 attr->config = id;
465 attr->type = PERF_TYPE_TRACEPOINT;
466 *strp += strlen(sys_name) + evt_length + 1; /* + 1 for the ':' */
467
468 attr->sample_type |= PERF_SAMPLE_RAW;
469 attr->sample_type |= PERF_SAMPLE_TIME;
470 attr->sample_type |= PERF_SAMPLE_CPU;
471
472 attr->sample_period = 1;
473
474
475 return EVT_HANDLED;
476}
477
478/* sys + ':' + event + ':' + flags*/
479#define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
480static enum event_result
481parse_multiple_tracepoint_event(struct perf_evlist *evlist, char *sys_name,
482 const char *evt_exp, char *flags)
483{
484 char evt_path[MAXPATHLEN];
485 struct dirent *evt_ent;
486 DIR *evt_dir;
487
488 snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name);
489 evt_dir = opendir(evt_path);
490
491 if (!evt_dir) {
492 perror("Can't open event dir");
493 return EVT_FAILED;
494 }
495
496 while ((evt_ent = readdir(evt_dir))) {
497 char event_opt[MAX_EVOPT_LEN + 1];
498 int len;
499
500 if (!strcmp(evt_ent->d_name, ".")
501 || !strcmp(evt_ent->d_name, "..")
502 || !strcmp(evt_ent->d_name, "enable")
503 || !strcmp(evt_ent->d_name, "filter"))
504 continue;
505
506 if (!strglobmatch(evt_ent->d_name, evt_exp))
507 continue;
508
509 len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
510 evt_ent->d_name, flags ? ":" : "",
511 flags ?: "");
512 if (len < 0)
513 return EVT_FAILED;
514
515 if (parse_events(evlist, event_opt, 0))
516 return EVT_FAILED;
517 }
518
519 return EVT_HANDLED_ALL;
520}
521
522static enum event_result
523parse_tracepoint_event(struct perf_evlist *evlist, const char **strp,
524 struct perf_event_attr *attr)
525{
526 const char *evt_name;
527 char *flags = NULL, *comma_loc;
528 char sys_name[MAX_EVENT_LENGTH];
529 unsigned int sys_length, evt_length;
530
531 if (debugfs_valid_mountpoint(debugfs_path))
532 return 0;
533
534 evt_name = strchr(*strp, ':');
535 if (!evt_name)
536 return EVT_FAILED;
537
538 sys_length = evt_name - *strp;
539 if (sys_length >= MAX_EVENT_LENGTH)
540 return 0;
541
542 strncpy(sys_name, *strp, sys_length);
543 sys_name[sys_length] = '\0';
544 evt_name = evt_name + 1;
545
546 comma_loc = strchr(evt_name, ',');
547 if (comma_loc) {
548 /* take the event name up to the comma */
549 evt_name = strndup(evt_name, comma_loc - evt_name);
550 }
551 flags = strchr(evt_name, ':');
552 if (flags) {
553 /* split it out: */
554 evt_name = strndup(evt_name, flags - evt_name);
555 flags++;
556 }
557
558 evt_length = strlen(evt_name);
559 if (evt_length >= MAX_EVENT_LENGTH)
560 return EVT_FAILED;
561 if (strpbrk(evt_name, "*?")) {
562 *strp += strlen(sys_name) + evt_length + 1; /* 1 == the ':' */
563 return parse_multiple_tracepoint_event(evlist, sys_name,
564 evt_name, flags);
565 } else {
566 return parse_single_tracepoint_event(sys_name, evt_name,
567 evt_length, attr, strp);
568 }
569}
570
571static enum event_result
572parse_breakpoint_type(const char *type, const char **strp,
573 struct perf_event_attr *attr)
574{
575 int i;
576
577 for (i = 0; i < 3; i++) {
578 if (!type[i])
579 break;
580
581 switch (type[i]) {
582 case 'r':
583 attr->bp_type |= HW_BREAKPOINT_R;
584 break;
585 case 'w':
586 attr->bp_type |= HW_BREAKPOINT_W;
587 break;
588 case 'x':
589 attr->bp_type |= HW_BREAKPOINT_X;
590 break;
591 default:
592 return EVT_FAILED;
593 }
594 }
595 if (!attr->bp_type) /* Default */
596 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
597
598 *strp = type + i;
599
600 return EVT_HANDLED;
601}
602
603static enum event_result
604parse_breakpoint_event(const char **strp, struct perf_event_attr *attr)
605{
606 const char *target;
607 const char *type;
608 char *endaddr;
609 u64 addr;
610 enum event_result err;
611
612 target = strchr(*strp, ':');
613 if (!target)
614 return EVT_FAILED;
615
616 if (strncmp(*strp, "mem", target - *strp) != 0)
617 return EVT_FAILED;
618
619 target++;
620
621 addr = strtoull(target, &endaddr, 0);
622 if (target == endaddr)
623 return EVT_FAILED;
624
625 attr->bp_addr = addr;
626 *strp = endaddr;
627
628 type = strchr(target, ':');
629
630 /* If no type is defined, just rw as default */
631 if (!type) {
632 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
633 } else {
634 err = parse_breakpoint_type(++type, strp, attr);
635 if (err == EVT_FAILED)
636 return EVT_FAILED;
637 }
638
639 /*
640 * We should find a nice way to override the access length
641 * Provide some defaults for now
642 */
643 if (attr->bp_type == HW_BREAKPOINT_X)
644 attr->bp_len = sizeof(long);
645 else
646 attr->bp_len = HW_BREAKPOINT_LEN_4;
647
648 attr->type = PERF_TYPE_BREAKPOINT;
649
650 return EVT_HANDLED;
651}
652
653static int check_events(const char *str, unsigned int i)
654{
655 int n;
656
657 n = strlen(event_symbols[i].symbol);
658 if (!strncasecmp(str, event_symbols[i].symbol, n))
659 return n;
660
661 n = strlen(event_symbols[i].alias);
662 if (n) {
663 if (!strncasecmp(str, event_symbols[i].alias, n))
664 return n;
665 }
666
667 return 0;
668}
669
670static enum event_result
671parse_symbolic_event(const char **strp, struct perf_event_attr *attr)
672{
673 const char *str = *strp;
674 unsigned int i;
675 int n;
676
677 for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
678 n = check_events(str, i);
679 if (n > 0) {
680 attr->type = event_symbols[i].type;
681 attr->config = event_symbols[i].config;
682 *strp = str + n;
683 return EVT_HANDLED;
684 }
685 }
686 return EVT_FAILED;
687}
688
689static enum event_result
690parse_raw_event(const char **strp, struct perf_event_attr *attr)
691{
692 const char *str = *strp;
693 u64 config;
694 int n;
695
696 if (*str != 'r')
697 return EVT_FAILED;
698 n = hex2u64(str + 1, &config);
699 if (n > 0) {
700 const char *end = str + n + 1;
701 if (*end != '\0' && *end != ',' && *end != ':')
702 return EVT_FAILED;
703
704 *strp = end;
705 attr->type = PERF_TYPE_RAW;
706 attr->config = config;
707 return EVT_HANDLED;
708 }
709 return EVT_FAILED;
710}
711
712static enum event_result
713parse_numeric_event(const char **strp, struct perf_event_attr *attr)
714{
715 const char *str = *strp;
716 char *endp;
717 unsigned long type;
718 u64 config;
719
720 type = strtoul(str, &endp, 0);
721 if (endp > str && type < PERF_TYPE_MAX && *endp == ':') {
722 str = endp + 1;
723 config = strtoul(str, &endp, 0);
724 if (endp > str) {
725 attr->type = type;
726 attr->config = config;
727 *strp = endp;
728 return EVT_HANDLED;
729 }
730 }
731 return EVT_FAILED;
732}
733
734static int
735parse_event_modifier(const char **strp, struct perf_event_attr *attr)
736{
737 const char *str = *strp;
738 int exclude = 0;
739 int eu = 0, ek = 0, eh = 0, precise = 0;
740
741 if (!*str)
742 return 0;
743
744 if (*str == ',')
745 return 0;
746
747 if (*str++ != ':')
748 return -1;
749
750 while (*str) {
751 if (*str == 'u') {
752 if (!exclude)
753 exclude = eu = ek = eh = 1;
754 eu = 0;
755 } else if (*str == 'k') {
756 if (!exclude)
757 exclude = eu = ek = eh = 1;
758 ek = 0;
759 } else if (*str == 'h') {
760 if (!exclude)
761 exclude = eu = ek = eh = 1;
762 eh = 0;
763 } else if (*str == 'p') {
764 precise++;
765 } else
766 break;
767
768 ++str;
769 }
770 if (str < *strp + 2)
771 return -1;
772
773 *strp = str;
774
775 attr->exclude_user = eu;
776 attr->exclude_kernel = ek;
777 attr->exclude_hv = eh;
778 attr->precise_ip = precise;
779
780 return 0;
781}
782
783/*
784 * Each event can have multiple symbolic names.
785 * Symbolic names are (almost) exactly matched.
786 */
787static enum event_result
788parse_event_symbols(struct perf_evlist *evlist, const char **str,
789 struct perf_event_attr *attr)
790{
791 enum event_result ret;
792
793 ret = parse_tracepoint_event(evlist, str, attr);
794 if (ret != EVT_FAILED)
795 goto modifier;
796
797 ret = parse_raw_event(str, attr);
798 if (ret != EVT_FAILED)
799 goto modifier;
800
801 ret = parse_numeric_event(str, attr);
802 if (ret != EVT_FAILED)
803 goto modifier;
804
805 ret = parse_symbolic_event(str, attr);
806 if (ret != EVT_FAILED)
807 goto modifier;
808
809 ret = parse_generic_hw_event(str, attr);
810 if (ret != EVT_FAILED)
811 goto modifier;
812
813 ret = parse_breakpoint_event(str, attr);
814 if (ret != EVT_FAILED)
815 goto modifier;
816
817 fprintf(stderr, "invalid or unsupported event: '%s'\n", *str);
818 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
819 return EVT_FAILED;
820
821modifier:
822 if (parse_event_modifier(str, attr) < 0) {
823 fprintf(stderr, "invalid event modifier: '%s'\n", *str);
824 fprintf(stderr, "Run 'perf list' for a list of valid events and modifiers\n");
825
826 return EVT_FAILED;
827 }
828
829 return ret;
830}
831
832int parse_events(struct perf_evlist *evlist , const char *str, int unset __used)
833{
834 struct perf_event_attr attr;
835 enum event_result ret;
836 const char *ostr;
837
838 for (;;) {
839 ostr = str;
840 memset(&attr, 0, sizeof(attr));
841 ret = parse_event_symbols(evlist, &str, &attr);
842 if (ret == EVT_FAILED)
843 return -1;
844
845 if (!(*str == 0 || *str == ',' || isspace(*str)))
846 return -1;
847
848 if (ret != EVT_HANDLED_ALL) {
849 struct perf_evsel *evsel;
850 evsel = perf_evsel__new(&attr, evlist->nr_entries);
851 if (evsel == NULL)
852 return -1;
853 perf_evlist__add(evlist, evsel);
854
855 evsel->name = calloc(str - ostr + 1, 1);
856 if (!evsel->name)
857 return -1;
858 strncpy(evsel->name, ostr, str - ostr);
859 }
860
861 if (*str == 0)
862 break;
863 if (*str == ',')
864 ++str;
865 while (isspace(*str))
866 ++str;
867 }
868
869 return 0;
870}
871
872int parse_events_option(const struct option *opt, const char *str,
873 int unset __used)
874{
875 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
876 return parse_events(evlist, str, unset);
877}
878
879int parse_filter(const struct option *opt, const char *str,
880 int unset __used)
881{
882 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
883 struct perf_evsel *last = NULL;
884
885 if (evlist->nr_entries > 0)
886 last = list_entry(evlist->entries.prev, struct perf_evsel, node);
887
888 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
889 fprintf(stderr,
890 "-F option should follow a -e tracepoint option\n");
891 return -1;
892 }
893
894 last->filter = strdup(str);
895 if (last->filter == NULL) {
896 fprintf(stderr, "not enough memory to hold filter string\n");
897 return -1;
898 }
899
900 return 0;
901}
902
903static const char * const event_type_descriptors[] = {
904 "Hardware event",
905 "Software event",
906 "Tracepoint event",
907 "Hardware cache event",
908 "Raw hardware event descriptor",
909 "Hardware breakpoint",
910};
911
912/*
913 * Print the events from <debugfs_mount_point>/tracing/events
914 */
915
916void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
917{
918 DIR *sys_dir, *evt_dir;
919 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
920 char evt_path[MAXPATHLEN];
921 char dir_path[MAXPATHLEN];
922
923 if (debugfs_valid_mountpoint(debugfs_path))
924 return;
925
926 sys_dir = opendir(debugfs_path);
927 if (!sys_dir)
928 return;
929
930 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
931 if (subsys_glob != NULL &&
932 !strglobmatch(sys_dirent.d_name, subsys_glob))
933 continue;
934
935 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
936 sys_dirent.d_name);
937 evt_dir = opendir(dir_path);
938 if (!evt_dir)
939 continue;
940
941 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
942 if (event_glob != NULL &&
943 !strglobmatch(evt_dirent.d_name, event_glob))
944 continue;
945
946 snprintf(evt_path, MAXPATHLEN, "%s:%s",
947 sys_dirent.d_name, evt_dirent.d_name);
948 printf(" %-50s [%s]\n", evt_path,
949 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
950 }
951 closedir(evt_dir);
952 }
953 closedir(sys_dir);
954}
955
956/*
957 * Check whether event is in <debugfs_mount_point>/tracing/events
958 */
959
960int is_valid_tracepoint(const char *event_string)
961{
962 DIR *sys_dir, *evt_dir;
963 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
964 char evt_path[MAXPATHLEN];
965 char dir_path[MAXPATHLEN];
966
967 if (debugfs_valid_mountpoint(debugfs_path))
968 return 0;
969
970 sys_dir = opendir(debugfs_path);
971 if (!sys_dir)
972 return 0;
973
974 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
975
976 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
977 sys_dirent.d_name);
978 evt_dir = opendir(dir_path);
979 if (!evt_dir)
980 continue;
981
982 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
983 snprintf(evt_path, MAXPATHLEN, "%s:%s",
984 sys_dirent.d_name, evt_dirent.d_name);
985 if (!strcmp(evt_path, event_string)) {
986 closedir(evt_dir);
987 closedir(sys_dir);
988 return 1;
989 }
990 }
991 closedir(evt_dir);
992 }
993 closedir(sys_dir);
994 return 0;
995}
996
997void print_events_type(u8 type)
998{
999 struct event_symbol *syms = event_symbols;
1000 unsigned int i;
1001 char name[64];
1002
1003 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
1004 if (type != syms->type)
1005 continue;
1006
1007 if (strlen(syms->alias))
1008 snprintf(name, sizeof(name), "%s OR %s",
1009 syms->symbol, syms->alias);
1010 else
1011 snprintf(name, sizeof(name), "%s", syms->symbol);
1012
1013 printf(" %-50s [%s]\n", name,
1014 event_type_descriptors[type]);
1015 }
1016}
1017
1018int print_hwcache_events(const char *event_glob)
1019{
1020 unsigned int type, op, i, printed = 0;
1021
1022 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1023 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1024 /* skip invalid cache type */
1025 if (!is_cache_op_valid(type, op))
1026 continue;
1027
1028 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1029 char *name = event_cache_name(type, op, i);
1030
1031 if (event_glob != NULL && !strglobmatch(name, event_glob))
1032 continue;
1033
1034 printf(" %-50s [%s]\n", name,
1035 event_type_descriptors[PERF_TYPE_HW_CACHE]);
1036 ++printed;
1037 }
1038 }
1039 }
1040
1041 return printed;
1042}
1043
1044#define MAX_NAME_LEN 100
1045
1046/*
1047 * Print the help text for the event symbols:
1048 */
1049void print_events(const char *event_glob)
1050{
1051 unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
1052 struct event_symbol *syms = event_symbols;
1053 char name[MAX_NAME_LEN];
1054
1055 printf("\n");
1056 printf("List of pre-defined events (to be used in -e):\n");
1057
1058 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
1059 type = syms->type;
1060
1061 if (type != prev_type && printed) {
1062 printf("\n");
1063 printed = 0;
1064 ntypes_printed++;
1065 }
1066
1067 if (event_glob != NULL &&
1068 !(strglobmatch(syms->symbol, event_glob) ||
1069 (syms->alias && strglobmatch(syms->alias, event_glob))))
1070 continue;
1071
1072 if (strlen(syms->alias))
1073 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1074 else
1075 strncpy(name, syms->symbol, MAX_NAME_LEN);
1076 printf(" %-50s [%s]\n", name,
1077 event_type_descriptors[type]);
1078
1079 prev_type = type;
1080 ++printed;
1081 }
1082
1083 if (ntypes_printed) {
1084 printed = 0;
1085 printf("\n");
1086 }
1087 print_hwcache_events(event_glob);
1088
1089 if (event_glob != NULL)
1090 return;
1091
1092 printf("\n");
1093 printf(" %-50s [%s]\n",
1094 "rNNN (see 'perf list --help' on how to encode it)",
1095 event_type_descriptors[PERF_TYPE_RAW]);
1096 printf("\n");
1097
1098 printf(" %-50s [%s]\n",
1099 "mem:<addr>[:access]",
1100 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1101 printf("\n");
1102
1103 print_tracepoint_events(NULL, NULL);
1104}
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/hw_breakpoint.h>
3#include <linux/err.h>
4#include <linux/list_sort.h>
5#include <linux/zalloc.h>
6#include <dirent.h>
7#include <errno.h>
8#include <sys/ioctl.h>
9#include <sys/param.h>
10#include "term.h"
11#include "evlist.h"
12#include "evsel.h"
13#include <subcmd/parse-options.h>
14#include "parse-events.h"
15#include "string2.h"
16#include "strbuf.h"
17#include "debug.h"
18#include <api/fs/tracing_path.h>
19#include <perf/cpumap.h>
20#include <util/parse-events-bison.h>
21#include <util/parse-events-flex.h>
22#include "pmu.h"
23#include "pmus.h"
24#include "asm/bug.h"
25#include "util/parse-branch-options.h"
26#include "util/evsel_config.h"
27#include "util/event.h"
28#include "util/bpf-filter.h"
29#include "util/util.h"
30#include "tracepoint.h"
31
32#define MAX_NAME_LEN 100
33
34#ifdef PARSER_DEBUG
35extern int parse_events_debug;
36#endif
37static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms);
38static int parse_events_terms__copy(const struct parse_events_terms *src,
39 struct parse_events_terms *dest);
40
41struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
42 [PERF_COUNT_HW_CPU_CYCLES] = {
43 .symbol = "cpu-cycles",
44 .alias = "cycles",
45 },
46 [PERF_COUNT_HW_INSTRUCTIONS] = {
47 .symbol = "instructions",
48 .alias = "",
49 },
50 [PERF_COUNT_HW_CACHE_REFERENCES] = {
51 .symbol = "cache-references",
52 .alias = "",
53 },
54 [PERF_COUNT_HW_CACHE_MISSES] = {
55 .symbol = "cache-misses",
56 .alias = "",
57 },
58 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
59 .symbol = "branch-instructions",
60 .alias = "branches",
61 },
62 [PERF_COUNT_HW_BRANCH_MISSES] = {
63 .symbol = "branch-misses",
64 .alias = "",
65 },
66 [PERF_COUNT_HW_BUS_CYCLES] = {
67 .symbol = "bus-cycles",
68 .alias = "",
69 },
70 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
71 .symbol = "stalled-cycles-frontend",
72 .alias = "idle-cycles-frontend",
73 },
74 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
75 .symbol = "stalled-cycles-backend",
76 .alias = "idle-cycles-backend",
77 },
78 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
79 .symbol = "ref-cycles",
80 .alias = "",
81 },
82};
83
84struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
85 [PERF_COUNT_SW_CPU_CLOCK] = {
86 .symbol = "cpu-clock",
87 .alias = "",
88 },
89 [PERF_COUNT_SW_TASK_CLOCK] = {
90 .symbol = "task-clock",
91 .alias = "",
92 },
93 [PERF_COUNT_SW_PAGE_FAULTS] = {
94 .symbol = "page-faults",
95 .alias = "faults",
96 },
97 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
98 .symbol = "context-switches",
99 .alias = "cs",
100 },
101 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
102 .symbol = "cpu-migrations",
103 .alias = "migrations",
104 },
105 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
106 .symbol = "minor-faults",
107 .alias = "",
108 },
109 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
110 .symbol = "major-faults",
111 .alias = "",
112 },
113 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
114 .symbol = "alignment-faults",
115 .alias = "",
116 },
117 [PERF_COUNT_SW_EMULATION_FAULTS] = {
118 .symbol = "emulation-faults",
119 .alias = "",
120 },
121 [PERF_COUNT_SW_DUMMY] = {
122 .symbol = "dummy",
123 .alias = "",
124 },
125 [PERF_COUNT_SW_BPF_OUTPUT] = {
126 .symbol = "bpf-output",
127 .alias = "",
128 },
129 [PERF_COUNT_SW_CGROUP_SWITCHES] = {
130 .symbol = "cgroup-switches",
131 .alias = "",
132 },
133};
134
135const char *event_type(int type)
136{
137 switch (type) {
138 case PERF_TYPE_HARDWARE:
139 return "hardware";
140
141 case PERF_TYPE_SOFTWARE:
142 return "software";
143
144 case PERF_TYPE_TRACEPOINT:
145 return "tracepoint";
146
147 case PERF_TYPE_HW_CACHE:
148 return "hardware-cache";
149
150 default:
151 break;
152 }
153
154 return "unknown";
155}
156
157static char *get_config_str(struct parse_events_terms *head_terms,
158 enum parse_events__term_type type_term)
159{
160 struct parse_events_term *term;
161
162 if (!head_terms)
163 return NULL;
164
165 list_for_each_entry(term, &head_terms->terms, list)
166 if (term->type_term == type_term)
167 return term->val.str;
168
169 return NULL;
170}
171
172static char *get_config_metric_id(struct parse_events_terms *head_terms)
173{
174 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID);
175}
176
177static char *get_config_name(struct parse_events_terms *head_terms)
178{
179 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME);
180}
181
182/**
183 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that
184 * matches the raw's string value. If the string value matches an
185 * event then change the term to be an event, if not then change it to
186 * be a config term. For example, "read" may be an event of the PMU or
187 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of
188 * the event can be determined and we don't need to scan all PMUs
189 * ahead-of-time.
190 * @config_terms: the list of terms that may contain a raw term.
191 * @pmu: the PMU to scan for events from.
192 */
193static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu)
194{
195 struct parse_events_term *term;
196
197 list_for_each_entry(term, &config_terms->terms, list) {
198 u64 num;
199
200 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW)
201 continue;
202
203 if (perf_pmu__have_event(pmu, term->val.str)) {
204 zfree(&term->config);
205 term->config = term->val.str;
206 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
207 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
208 term->val.num = 1;
209 term->no_value = true;
210 continue;
211 }
212
213 zfree(&term->config);
214 term->config = strdup("config");
215 errno = 0;
216 num = strtoull(term->val.str + 1, NULL, 16);
217 assert(errno == 0);
218 free(term->val.str);
219 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
220 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG;
221 term->val.num = num;
222 term->no_value = false;
223 }
224}
225
226static struct evsel *
227__add_event(struct list_head *list, int *idx,
228 struct perf_event_attr *attr,
229 bool init_attr,
230 const char *name, const char *metric_id, struct perf_pmu *pmu,
231 struct list_head *config_terms, bool auto_merge_stats,
232 const char *cpu_list)
233{
234 struct evsel *evsel;
235 struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) :
236 cpu_list ? perf_cpu_map__new(cpu_list) : NULL;
237
238 if (pmu)
239 perf_pmu__warn_invalid_formats(pmu);
240
241 if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) {
242 perf_pmu__warn_invalid_config(pmu, attr->config, name,
243 PERF_PMU_FORMAT_VALUE_CONFIG, "config");
244 perf_pmu__warn_invalid_config(pmu, attr->config1, name,
245 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1");
246 perf_pmu__warn_invalid_config(pmu, attr->config2, name,
247 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2");
248 perf_pmu__warn_invalid_config(pmu, attr->config3, name,
249 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3");
250 }
251 if (init_attr)
252 event_attr_init(attr);
253
254 evsel = evsel__new_idx(attr, *idx);
255 if (!evsel) {
256 perf_cpu_map__put(cpus);
257 return NULL;
258 }
259
260 (*idx)++;
261 evsel->core.cpus = cpus;
262 evsel->core.own_cpus = perf_cpu_map__get(cpus);
263 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false;
264 evsel->core.is_pmu_core = pmu ? pmu->is_core : false;
265 evsel->auto_merge_stats = auto_merge_stats;
266 evsel->pmu = pmu;
267 evsel->pmu_name = pmu ? strdup(pmu->name) : NULL;
268
269 if (name)
270 evsel->name = strdup(name);
271
272 if (metric_id)
273 evsel->metric_id = strdup(metric_id);
274
275 if (config_terms)
276 list_splice_init(config_terms, &evsel->config_terms);
277
278 if (list)
279 list_add_tail(&evsel->core.node, list);
280
281 return evsel;
282}
283
284struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
285 const char *name, const char *metric_id,
286 struct perf_pmu *pmu)
287{
288 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name,
289 metric_id, pmu, /*config_terms=*/NULL,
290 /*auto_merge_stats=*/false, /*cpu_list=*/NULL);
291}
292
293static int add_event(struct list_head *list, int *idx,
294 struct perf_event_attr *attr, const char *name,
295 const char *metric_id, struct list_head *config_terms)
296{
297 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id,
298 /*pmu=*/NULL, config_terms,
299 /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM;
300}
301
302static int add_event_tool(struct list_head *list, int *idx,
303 enum perf_tool_event tool_event)
304{
305 struct evsel *evsel;
306 struct perf_event_attr attr = {
307 .type = PERF_TYPE_SOFTWARE,
308 .config = PERF_COUNT_SW_DUMMY,
309 };
310
311 evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL,
312 /*metric_id=*/NULL, /*pmu=*/NULL,
313 /*config_terms=*/NULL, /*auto_merge_stats=*/false,
314 /*cpu_list=*/"0");
315 if (!evsel)
316 return -ENOMEM;
317 evsel->tool_event = tool_event;
318 if (tool_event == PERF_TOOL_DURATION_TIME
319 || tool_event == PERF_TOOL_USER_TIME
320 || tool_event == PERF_TOOL_SYSTEM_TIME) {
321 free((char *)evsel->unit);
322 evsel->unit = strdup("ns");
323 }
324 return 0;
325}
326
327/**
328 * parse_aliases - search names for entries beginning or equalling str ignoring
329 * case. If mutliple entries in names match str then the longest
330 * is chosen.
331 * @str: The needle to look for.
332 * @names: The haystack to search.
333 * @size: The size of the haystack.
334 * @longest: Out argument giving the length of the matching entry.
335 */
336static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size,
337 int *longest)
338{
339 *longest = -1;
340 for (int i = 0; i < size; i++) {
341 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {
342 int n = strlen(names[i][j]);
343
344 if (n > *longest && !strncasecmp(str, names[i][j], n))
345 *longest = n;
346 }
347 if (*longest > 0)
348 return i;
349 }
350
351 return -1;
352}
353
354typedef int config_term_func_t(struct perf_event_attr *attr,
355 struct parse_events_term *term,
356 struct parse_events_error *err);
357static int config_term_common(struct perf_event_attr *attr,
358 struct parse_events_term *term,
359 struct parse_events_error *err);
360static int config_attr(struct perf_event_attr *attr,
361 struct parse_events_terms *head,
362 struct parse_events_error *err,
363 config_term_func_t config_term);
364
365/**
366 * parse_events__decode_legacy_cache - Search name for the legacy cache event
367 * name composed of 1, 2 or 3 hyphen
368 * separated sections. The first section is
369 * the cache type while the others are the
370 * optional op and optional result. To make
371 * life hard the names in the table also
372 * contain hyphens and the longest name
373 * should always be selected.
374 */
375int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config)
376{
377 int len, cache_type = -1, cache_op = -1, cache_result = -1;
378 const char *name_end = &name[strlen(name) + 1];
379 const char *str = name;
380
381 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len);
382 if (cache_type == -1)
383 return -EINVAL;
384 str += len + 1;
385
386 if (str < name_end) {
387 cache_op = parse_aliases(str, evsel__hw_cache_op,
388 PERF_COUNT_HW_CACHE_OP_MAX, &len);
389 if (cache_op >= 0) {
390 if (!evsel__is_cache_op_valid(cache_type, cache_op))
391 return -EINVAL;
392 str += len + 1;
393 } else {
394 cache_result = parse_aliases(str, evsel__hw_cache_result,
395 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
396 if (cache_result >= 0)
397 str += len + 1;
398 }
399 }
400 if (str < name_end) {
401 if (cache_op < 0) {
402 cache_op = parse_aliases(str, evsel__hw_cache_op,
403 PERF_COUNT_HW_CACHE_OP_MAX, &len);
404 if (cache_op >= 0) {
405 if (!evsel__is_cache_op_valid(cache_type, cache_op))
406 return -EINVAL;
407 }
408 } else if (cache_result < 0) {
409 cache_result = parse_aliases(str, evsel__hw_cache_result,
410 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);
411 }
412 }
413
414 /*
415 * Fall back to reads:
416 */
417 if (cache_op == -1)
418 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
419
420 /*
421 * Fall back to accesses:
422 */
423 if (cache_result == -1)
424 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
425
426 *config = cache_type | (cache_op << 8) | (cache_result << 16);
427 if (perf_pmus__supports_extended_type())
428 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT;
429 return 0;
430}
431
432/**
433 * parse_events__filter_pmu - returns false if a wildcard PMU should be
434 * considered, true if it should be filtered.
435 */
436bool parse_events__filter_pmu(const struct parse_events_state *parse_state,
437 const struct perf_pmu *pmu)
438{
439 if (parse_state->pmu_filter == NULL)
440 return false;
441
442 return strcmp(parse_state->pmu_filter, pmu->name) != 0;
443}
444
445int parse_events_add_cache(struct list_head *list, int *idx, const char *name,
446 struct parse_events_state *parse_state,
447 struct parse_events_terms *head_config)
448{
449 struct perf_pmu *pmu = NULL;
450 bool found_supported = false;
451 const char *config_name = get_config_name(head_config);
452 const char *metric_id = get_config_metric_id(head_config);
453
454 /* Legacy cache events are only supported by core PMUs. */
455 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
456 LIST_HEAD(config_terms);
457 struct perf_event_attr attr;
458 int ret;
459
460 if (parse_events__filter_pmu(parse_state, pmu))
461 continue;
462
463 memset(&attr, 0, sizeof(attr));
464 attr.type = PERF_TYPE_HW_CACHE;
465
466 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config);
467 if (ret)
468 return ret;
469
470 found_supported = true;
471
472 if (head_config) {
473 if (config_attr(&attr, head_config, parse_state->error, config_term_common))
474 return -EINVAL;
475
476 if (get_config_terms(head_config, &config_terms))
477 return -ENOMEM;
478 }
479
480 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name,
481 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
482 /*cpu_list=*/NULL) == NULL)
483 return -ENOMEM;
484
485 free_config_terms(&config_terms);
486 }
487 return found_supported ? 0 : -EINVAL;
488}
489
490#ifdef HAVE_LIBTRACEEVENT
491static void tracepoint_error(struct parse_events_error *e, int err,
492 const char *sys, const char *name, int column)
493{
494 const char *str;
495 char help[BUFSIZ];
496
497 if (!e)
498 return;
499
500 /*
501 * We get error directly from syscall errno ( > 0),
502 * or from encoded pointer's error ( < 0).
503 */
504 err = abs(err);
505
506 switch (err) {
507 case EACCES:
508 str = "can't access trace events";
509 break;
510 case ENOENT:
511 str = "unknown tracepoint";
512 break;
513 default:
514 str = "failed to add tracepoint";
515 break;
516 }
517
518 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
519 parse_events_error__handle(e, column, strdup(str), strdup(help));
520}
521
522static int add_tracepoint(struct list_head *list, int *idx,
523 const char *sys_name, const char *evt_name,
524 struct parse_events_error *err,
525 struct parse_events_terms *head_config, void *loc_)
526{
527 YYLTYPE *loc = loc_;
528 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++);
529
530 if (IS_ERR(evsel)) {
531 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column);
532 return PTR_ERR(evsel);
533 }
534
535 if (head_config) {
536 LIST_HEAD(config_terms);
537
538 if (get_config_terms(head_config, &config_terms))
539 return -ENOMEM;
540 list_splice(&config_terms, &evsel->config_terms);
541 }
542
543 list_add_tail(&evsel->core.node, list);
544 return 0;
545}
546
547static int add_tracepoint_multi_event(struct list_head *list, int *idx,
548 const char *sys_name, const char *evt_name,
549 struct parse_events_error *err,
550 struct parse_events_terms *head_config, YYLTYPE *loc)
551{
552 char *evt_path;
553 struct dirent *evt_ent;
554 DIR *evt_dir;
555 int ret = 0, found = 0;
556
557 evt_path = get_events_file(sys_name);
558 if (!evt_path) {
559 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
560 return -1;
561 }
562 evt_dir = opendir(evt_path);
563 if (!evt_dir) {
564 put_events_file(evt_path);
565 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
566 return -1;
567 }
568
569 while (!ret && (evt_ent = readdir(evt_dir))) {
570 if (!strcmp(evt_ent->d_name, ".")
571 || !strcmp(evt_ent->d_name, "..")
572 || !strcmp(evt_ent->d_name, "enable")
573 || !strcmp(evt_ent->d_name, "filter"))
574 continue;
575
576 if (!strglobmatch(evt_ent->d_name, evt_name))
577 continue;
578
579 found++;
580
581 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
582 err, head_config, loc);
583 }
584
585 if (!found) {
586 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column);
587 ret = -1;
588 }
589
590 put_events_file(evt_path);
591 closedir(evt_dir);
592 return ret;
593}
594
595static int add_tracepoint_event(struct list_head *list, int *idx,
596 const char *sys_name, const char *evt_name,
597 struct parse_events_error *err,
598 struct parse_events_terms *head_config, YYLTYPE *loc)
599{
600 return strpbrk(evt_name, "*?") ?
601 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
602 err, head_config, loc) :
603 add_tracepoint(list, idx, sys_name, evt_name,
604 err, head_config, loc);
605}
606
607static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
608 const char *sys_name, const char *evt_name,
609 struct parse_events_error *err,
610 struct parse_events_terms *head_config, YYLTYPE *loc)
611{
612 struct dirent *events_ent;
613 DIR *events_dir;
614 int ret = 0;
615
616 events_dir = tracing_events__opendir();
617 if (!events_dir) {
618 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);
619 return -1;
620 }
621
622 while (!ret && (events_ent = readdir(events_dir))) {
623 if (!strcmp(events_ent->d_name, ".")
624 || !strcmp(events_ent->d_name, "..")
625 || !strcmp(events_ent->d_name, "enable")
626 || !strcmp(events_ent->d_name, "header_event")
627 || !strcmp(events_ent->d_name, "header_page"))
628 continue;
629
630 if (!strglobmatch(events_ent->d_name, sys_name))
631 continue;
632
633 ret = add_tracepoint_event(list, idx, events_ent->d_name,
634 evt_name, err, head_config, loc);
635 }
636
637 closedir(events_dir);
638 return ret;
639}
640#endif /* HAVE_LIBTRACEEVENT */
641
642static int
643parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
644{
645 int i;
646
647 for (i = 0; i < 3; i++) {
648 if (!type || !type[i])
649 break;
650
651#define CHECK_SET_TYPE(bit) \
652do { \
653 if (attr->bp_type & bit) \
654 return -EINVAL; \
655 else \
656 attr->bp_type |= bit; \
657} while (0)
658
659 switch (type[i]) {
660 case 'r':
661 CHECK_SET_TYPE(HW_BREAKPOINT_R);
662 break;
663 case 'w':
664 CHECK_SET_TYPE(HW_BREAKPOINT_W);
665 break;
666 case 'x':
667 CHECK_SET_TYPE(HW_BREAKPOINT_X);
668 break;
669 default:
670 return -EINVAL;
671 }
672 }
673
674#undef CHECK_SET_TYPE
675
676 if (!attr->bp_type) /* Default */
677 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
678
679 return 0;
680}
681
682int parse_events_add_breakpoint(struct parse_events_state *parse_state,
683 struct list_head *list,
684 u64 addr, char *type, u64 len,
685 struct parse_events_terms *head_config)
686{
687 struct perf_event_attr attr;
688 LIST_HEAD(config_terms);
689 const char *name;
690
691 memset(&attr, 0, sizeof(attr));
692 attr.bp_addr = addr;
693
694 if (parse_breakpoint_type(type, &attr))
695 return -EINVAL;
696
697 /* Provide some defaults if len is not specified */
698 if (!len) {
699 if (attr.bp_type == HW_BREAKPOINT_X)
700 len = sizeof(long);
701 else
702 len = HW_BREAKPOINT_LEN_4;
703 }
704
705 attr.bp_len = len;
706
707 attr.type = PERF_TYPE_BREAKPOINT;
708 attr.sample_period = 1;
709
710 if (head_config) {
711 if (config_attr(&attr, head_config, parse_state->error,
712 config_term_common))
713 return -EINVAL;
714
715 if (get_config_terms(head_config, &config_terms))
716 return -ENOMEM;
717 }
718
719 name = get_config_name(head_config);
720
721 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL,
722 &config_terms);
723}
724
725static int check_type_val(struct parse_events_term *term,
726 struct parse_events_error *err,
727 enum parse_events__term_val_type type)
728{
729 if (type == term->type_val)
730 return 0;
731
732 if (err) {
733 parse_events_error__handle(err, term->err_val,
734 type == PARSE_EVENTS__TERM_TYPE_NUM
735 ? strdup("expected numeric value")
736 : strdup("expected string value"),
737 NULL);
738 }
739 return -EINVAL;
740}
741
742static bool config_term_shrinked;
743
744static const char *config_term_name(enum parse_events__term_type term_type)
745{
746 /*
747 * Update according to parse-events.l
748 */
749 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
750 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
751 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
752 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
753 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
754 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3",
755 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
756 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
757 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
758 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
759 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
760 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
761 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
762 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
763 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
764 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
765 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr",
766 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
767 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
768 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
769 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore",
770 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output",
771 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size",
772 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id",
773 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw",
774 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache",
775 [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware",
776 };
777 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR)
778 return "unknown term";
779
780 return config_term_names[term_type];
781}
782
783static bool
784config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err)
785{
786 char *err_str;
787
788 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
789 parse_events_error__handle(err, -1,
790 strdup("Invalid term_type"), NULL);
791 return false;
792 }
793 if (!config_term_shrinked)
794 return true;
795
796 switch (term_type) {
797 case PARSE_EVENTS__TERM_TYPE_CONFIG:
798 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
799 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
800 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
801 case PARSE_EVENTS__TERM_TYPE_NAME:
802 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
803 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
804 case PARSE_EVENTS__TERM_TYPE_PERCORE:
805 return true;
806 case PARSE_EVENTS__TERM_TYPE_USER:
807 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
808 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
809 case PARSE_EVENTS__TERM_TYPE_TIME:
810 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
811 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
812 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
813 case PARSE_EVENTS__TERM_TYPE_INHERIT:
814 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
815 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
816 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
817 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
818 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
819 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
820 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
821 case PARSE_EVENTS__TERM_TYPE_RAW:
822 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
823 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
824 default:
825 if (!err)
826 return false;
827
828 /* term_type is validated so indexing is safe */
829 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",
830 config_term_name(term_type)) >= 0)
831 parse_events_error__handle(err, -1, err_str, NULL);
832 return false;
833 }
834}
835
836void parse_events__shrink_config_terms(void)
837{
838 config_term_shrinked = true;
839}
840
841static int config_term_common(struct perf_event_attr *attr,
842 struct parse_events_term *term,
843 struct parse_events_error *err)
844{
845#define CHECK_TYPE_VAL(type) \
846do { \
847 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
848 return -EINVAL; \
849} while (0)
850
851 switch (term->type_term) {
852 case PARSE_EVENTS__TERM_TYPE_CONFIG:
853 CHECK_TYPE_VAL(NUM);
854 attr->config = term->val.num;
855 break;
856 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
857 CHECK_TYPE_VAL(NUM);
858 attr->config1 = term->val.num;
859 break;
860 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
861 CHECK_TYPE_VAL(NUM);
862 attr->config2 = term->val.num;
863 break;
864 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
865 CHECK_TYPE_VAL(NUM);
866 attr->config3 = term->val.num;
867 break;
868 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
869 CHECK_TYPE_VAL(NUM);
870 break;
871 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
872 CHECK_TYPE_VAL(NUM);
873 break;
874 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
875 CHECK_TYPE_VAL(STR);
876 if (strcmp(term->val.str, "no") &&
877 parse_branch_str(term->val.str,
878 &attr->branch_sample_type)) {
879 parse_events_error__handle(err, term->err_val,
880 strdup("invalid branch sample type"),
881 NULL);
882 return -EINVAL;
883 }
884 break;
885 case PARSE_EVENTS__TERM_TYPE_TIME:
886 CHECK_TYPE_VAL(NUM);
887 if (term->val.num > 1) {
888 parse_events_error__handle(err, term->err_val,
889 strdup("expected 0 or 1"),
890 NULL);
891 return -EINVAL;
892 }
893 break;
894 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
895 CHECK_TYPE_VAL(STR);
896 break;
897 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
898 CHECK_TYPE_VAL(NUM);
899 break;
900 case PARSE_EVENTS__TERM_TYPE_INHERIT:
901 CHECK_TYPE_VAL(NUM);
902 break;
903 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
904 CHECK_TYPE_VAL(NUM);
905 break;
906 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
907 CHECK_TYPE_VAL(NUM);
908 break;
909 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
910 CHECK_TYPE_VAL(NUM);
911 break;
912 case PARSE_EVENTS__TERM_TYPE_NAME:
913 CHECK_TYPE_VAL(STR);
914 break;
915 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
916 CHECK_TYPE_VAL(STR);
917 break;
918 case PARSE_EVENTS__TERM_TYPE_RAW:
919 CHECK_TYPE_VAL(STR);
920 break;
921 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
922 CHECK_TYPE_VAL(NUM);
923 break;
924 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
925 CHECK_TYPE_VAL(NUM);
926 break;
927 case PARSE_EVENTS__TERM_TYPE_PERCORE:
928 CHECK_TYPE_VAL(NUM);
929 if ((unsigned int)term->val.num > 1) {
930 parse_events_error__handle(err, term->err_val,
931 strdup("expected 0 or 1"),
932 NULL);
933 return -EINVAL;
934 }
935 break;
936 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
937 CHECK_TYPE_VAL(NUM);
938 break;
939 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
940 CHECK_TYPE_VAL(NUM);
941 if (term->val.num > UINT_MAX) {
942 parse_events_error__handle(err, term->err_val,
943 strdup("too big"),
944 NULL);
945 return -EINVAL;
946 }
947 break;
948 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
949 case PARSE_EVENTS__TERM_TYPE_USER:
950 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
951 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
952 default:
953 parse_events_error__handle(err, term->err_term,
954 strdup(config_term_name(term->type_term)),
955 parse_events_formats_error_string(NULL));
956 return -EINVAL;
957 }
958
959 /*
960 * Check term availability after basic checking so
961 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
962 *
963 * If check availability at the entry of this function,
964 * user will see "'<sysfs term>' is not usable in 'perf stat'"
965 * if an invalid config term is provided for legacy events
966 * (for example, instructions/badterm/...), which is confusing.
967 */
968 if (!config_term_avail(term->type_term, err))
969 return -EINVAL;
970 return 0;
971#undef CHECK_TYPE_VAL
972}
973
974static int config_term_pmu(struct perf_event_attr *attr,
975 struct parse_events_term *term,
976 struct parse_events_error *err)
977{
978 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) {
979 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
980
981 if (!pmu) {
982 char *err_str;
983
984 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
985 parse_events_error__handle(err, term->err_term,
986 err_str, /*help=*/NULL);
987 return -EINVAL;
988 }
989 /*
990 * Rewrite the PMU event to a legacy cache one unless the PMU
991 * doesn't support legacy cache events or the event is present
992 * within the PMU.
993 */
994 if (perf_pmu__supports_legacy_cache(pmu) &&
995 !perf_pmu__have_event(pmu, term->config)) {
996 attr->type = PERF_TYPE_HW_CACHE;
997 return parse_events__decode_legacy_cache(term->config, pmu->type,
998 &attr->config);
999 } else {
1000 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1001 term->no_value = true;
1002 }
1003 }
1004 if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) {
1005 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
1006
1007 if (!pmu) {
1008 char *err_str;
1009
1010 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)
1011 parse_events_error__handle(err, term->err_term,
1012 err_str, /*help=*/NULL);
1013 return -EINVAL;
1014 }
1015 /*
1016 * If the PMU has a sysfs or json event prefer it over
1017 * legacy. ARM requires this.
1018 */
1019 if (perf_pmu__have_event(pmu, term->config)) {
1020 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
1021 term->no_value = true;
1022 } else {
1023 attr->type = PERF_TYPE_HARDWARE;
1024 attr->config = term->val.num;
1025 if (perf_pmus__supports_extended_type())
1026 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT;
1027 }
1028 return 0;
1029 }
1030 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1031 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) {
1032 /*
1033 * Always succeed for sysfs terms, as we dont know
1034 * at this point what type they need to have.
1035 */
1036 return 0;
1037 }
1038 return config_term_common(attr, term, err);
1039}
1040
1041#ifdef HAVE_LIBTRACEEVENT
1042static int config_term_tracepoint(struct perf_event_attr *attr,
1043 struct parse_events_term *term,
1044 struct parse_events_error *err)
1045{
1046 switch (term->type_term) {
1047 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1048 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1049 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1050 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1051 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1052 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1053 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1054 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1055 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1056 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1057 return config_term_common(attr, term, err);
1058 case PARSE_EVENTS__TERM_TYPE_USER:
1059 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1060 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1061 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1062 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1063 case PARSE_EVENTS__TERM_TYPE_NAME:
1064 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1065 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1066 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1067 case PARSE_EVENTS__TERM_TYPE_TIME:
1068 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1069 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1070 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1071 case PARSE_EVENTS__TERM_TYPE_RAW:
1072 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1073 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1074 default:
1075 if (err) {
1076 parse_events_error__handle(err, term->err_term,
1077 strdup(config_term_name(term->type_term)),
1078 strdup("valid terms: call-graph,stack-size\n"));
1079 }
1080 return -EINVAL;
1081 }
1082
1083 return 0;
1084}
1085#endif
1086
1087static int config_attr(struct perf_event_attr *attr,
1088 struct parse_events_terms *head,
1089 struct parse_events_error *err,
1090 config_term_func_t config_term)
1091{
1092 struct parse_events_term *term;
1093
1094 list_for_each_entry(term, &head->terms, list)
1095 if (config_term(attr, term, err))
1096 return -EINVAL;
1097
1098 return 0;
1099}
1100
1101static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms)
1102{
1103#define ADD_CONFIG_TERM(__type, __weak) \
1104 struct evsel_config_term *__t; \
1105 \
1106 __t = zalloc(sizeof(*__t)); \
1107 if (!__t) \
1108 return -ENOMEM; \
1109 \
1110 INIT_LIST_HEAD(&__t->list); \
1111 __t->type = EVSEL__CONFIG_TERM_ ## __type; \
1112 __t->weak = __weak; \
1113 list_add_tail(&__t->list, head_terms)
1114
1115#define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \
1116do { \
1117 ADD_CONFIG_TERM(__type, __weak); \
1118 __t->val.__name = __val; \
1119} while (0)
1120
1121#define ADD_CONFIG_TERM_STR(__type, __val, __weak) \
1122do { \
1123 ADD_CONFIG_TERM(__type, __weak); \
1124 __t->val.str = strdup(__val); \
1125 if (!__t->val.str) { \
1126 zfree(&__t); \
1127 return -ENOMEM; \
1128 } \
1129 __t->free_str = true; \
1130} while (0)
1131
1132 struct parse_events_term *term;
1133
1134 list_for_each_entry(term, &head_config->terms, list) {
1135 switch (term->type_term) {
1136 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1137 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);
1138 break;
1139 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1140 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);
1141 break;
1142 case PARSE_EVENTS__TERM_TYPE_TIME:
1143 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);
1144 break;
1145 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1146 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);
1147 break;
1148 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1149 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);
1150 break;
1151 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1152 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
1153 term->val.num, term->weak);
1154 break;
1155 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1156 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1157 term->val.num ? 1 : 0, term->weak);
1158 break;
1159 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1160 ADD_CONFIG_TERM_VAL(INHERIT, inherit,
1161 term->val.num ? 0 : 1, term->weak);
1162 break;
1163 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1164 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
1165 term->val.num, term->weak);
1166 break;
1167 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1168 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
1169 term->val.num, term->weak);
1170 break;
1171 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1172 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1173 term->val.num ? 1 : 0, term->weak);
1174 break;
1175 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1176 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
1177 term->val.num ? 0 : 1, term->weak);
1178 break;
1179 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1180 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);
1181 break;
1182 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1183 ADD_CONFIG_TERM_VAL(PERCORE, percore,
1184 term->val.num ? true : false, term->weak);
1185 break;
1186 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1187 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
1188 term->val.num ? 1 : 0, term->weak);
1189 break;
1190 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1191 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
1192 term->val.num, term->weak);
1193 break;
1194 case PARSE_EVENTS__TERM_TYPE_USER:
1195 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1196 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1197 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1198 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1199 case PARSE_EVENTS__TERM_TYPE_NAME:
1200 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1201 case PARSE_EVENTS__TERM_TYPE_RAW:
1202 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1203 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1204 default:
1205 break;
1206 }
1207 }
1208 return 0;
1209}
1210
1211/*
1212 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for
1213 * each bit of attr->config that the user has changed.
1214 */
1215static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config,
1216 struct list_head *head_terms)
1217{
1218 struct parse_events_term *term;
1219 u64 bits = 0;
1220 int type;
1221
1222 list_for_each_entry(term, &head_config->terms, list) {
1223 switch (term->type_term) {
1224 case PARSE_EVENTS__TERM_TYPE_USER:
1225 type = perf_pmu__format_type(pmu, term->config);
1226 if (type != PERF_PMU_FORMAT_VALUE_CONFIG)
1227 continue;
1228 bits |= perf_pmu__format_bits(pmu, term->config);
1229 break;
1230 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1231 bits = ~(u64)0;
1232 break;
1233 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1234 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1235 case PARSE_EVENTS__TERM_TYPE_CONFIG3:
1236 case PARSE_EVENTS__TERM_TYPE_NAME:
1237 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1238 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1239 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1240 case PARSE_EVENTS__TERM_TYPE_TIME:
1241 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1242 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1243 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1244 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1245 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1246 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1247 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1248 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1249 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1250 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1251 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1252 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
1253 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
1254 case PARSE_EVENTS__TERM_TYPE_RAW:
1255 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:
1256 case PARSE_EVENTS__TERM_TYPE_HARDWARE:
1257 default:
1258 break;
1259 }
1260 }
1261
1262 if (bits)
1263 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);
1264
1265#undef ADD_CONFIG_TERM
1266 return 0;
1267}
1268
1269int parse_events_add_tracepoint(struct list_head *list, int *idx,
1270 const char *sys, const char *event,
1271 struct parse_events_error *err,
1272 struct parse_events_terms *head_config, void *loc_)
1273{
1274 YYLTYPE *loc = loc_;
1275#ifdef HAVE_LIBTRACEEVENT
1276 if (head_config) {
1277 struct perf_event_attr attr;
1278
1279 if (config_attr(&attr, head_config, err,
1280 config_term_tracepoint))
1281 return -EINVAL;
1282 }
1283
1284 if (strpbrk(sys, "*?"))
1285 return add_tracepoint_multi_sys(list, idx, sys, event,
1286 err, head_config, loc);
1287 else
1288 return add_tracepoint_event(list, idx, sys, event,
1289 err, head_config, loc);
1290#else
1291 (void)list;
1292 (void)idx;
1293 (void)sys;
1294 (void)event;
1295 (void)head_config;
1296 parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"),
1297 strdup("libtraceevent is necessary for tracepoint support"));
1298 return -1;
1299#endif
1300}
1301
1302static int __parse_events_add_numeric(struct parse_events_state *parse_state,
1303 struct list_head *list,
1304 struct perf_pmu *pmu, u32 type, u32 extended_type,
1305 u64 config, struct parse_events_terms *head_config)
1306{
1307 struct perf_event_attr attr;
1308 LIST_HEAD(config_terms);
1309 const char *name, *metric_id;
1310 int ret;
1311
1312 memset(&attr, 0, sizeof(attr));
1313 attr.type = type;
1314 attr.config = config;
1315 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) {
1316 assert(perf_pmus__supports_extended_type());
1317 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT;
1318 }
1319
1320 if (head_config) {
1321 if (config_attr(&attr, head_config, parse_state->error,
1322 config_term_common))
1323 return -EINVAL;
1324
1325 if (get_config_terms(head_config, &config_terms))
1326 return -ENOMEM;
1327 }
1328
1329 name = get_config_name(head_config);
1330 metric_id = get_config_metric_id(head_config);
1331 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name,
1332 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
1333 /*cpu_list=*/NULL) ? 0 : -ENOMEM;
1334 free_config_terms(&config_terms);
1335 return ret;
1336}
1337
1338int parse_events_add_numeric(struct parse_events_state *parse_state,
1339 struct list_head *list,
1340 u32 type, u64 config,
1341 struct parse_events_terms *head_config,
1342 bool wildcard)
1343{
1344 struct perf_pmu *pmu = NULL;
1345 bool found_supported = false;
1346
1347 /* Wildcards on numeric values are only supported by core PMUs. */
1348 if (wildcard && perf_pmus__supports_extended_type()) {
1349 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
1350 int ret;
1351
1352 found_supported = true;
1353 if (parse_events__filter_pmu(parse_state, pmu))
1354 continue;
1355
1356 ret = __parse_events_add_numeric(parse_state, list, pmu,
1357 type, pmu->type,
1358 config, head_config);
1359 if (ret)
1360 return ret;
1361 }
1362 if (found_supported)
1363 return 0;
1364 }
1365 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type),
1366 type, /*extended_type=*/0, config, head_config);
1367}
1368
1369int parse_events_add_tool(struct parse_events_state *parse_state,
1370 struct list_head *list,
1371 int tool_event)
1372{
1373 return add_event_tool(list, &parse_state->idx, tool_event);
1374}
1375
1376static bool config_term_percore(struct list_head *config_terms)
1377{
1378 struct evsel_config_term *term;
1379
1380 list_for_each_entry(term, config_terms, list) {
1381 if (term->type == EVSEL__CONFIG_TERM_PERCORE)
1382 return term->val.percore;
1383 }
1384
1385 return false;
1386}
1387
1388int parse_events_add_pmu(struct parse_events_state *parse_state,
1389 struct list_head *list, const char *name,
1390 const struct parse_events_terms *const_parsed_terms,
1391 bool auto_merge_stats, void *loc_)
1392{
1393 struct perf_event_attr attr;
1394 struct perf_pmu_info info;
1395 struct perf_pmu *pmu;
1396 struct evsel *evsel;
1397 struct parse_events_error *err = parse_state->error;
1398 YYLTYPE *loc = loc_;
1399 LIST_HEAD(config_terms);
1400 struct parse_events_terms parsed_terms;
1401 bool alias_rewrote_terms = false;
1402
1403 pmu = parse_state->fake_pmu ?: perf_pmus__find(name);
1404
1405 if (!pmu) {
1406 char *err_str;
1407
1408 if (asprintf(&err_str,
1409 "Cannot find PMU `%s'. Missing kernel support?",
1410 name) >= 0)
1411 parse_events_error__handle(err, loc->first_column, err_str, NULL);
1412 return -EINVAL;
1413 }
1414
1415 parse_events_terms__init(&parsed_terms);
1416 if (const_parsed_terms) {
1417 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1418
1419 if (ret)
1420 return ret;
1421 }
1422
1423 if (verbose > 1) {
1424 struct strbuf sb;
1425
1426 strbuf_init(&sb, /*hint=*/ 0);
1427 if (pmu->selectable && list_empty(&parsed_terms.terms)) {
1428 strbuf_addf(&sb, "%s//", name);
1429 } else {
1430 strbuf_addf(&sb, "%s/", name);
1431 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1432 strbuf_addch(&sb, '/');
1433 }
1434 fprintf(stderr, "Attempt to add: %s\n", sb.buf);
1435 strbuf_release(&sb);
1436 }
1437 fix_raw(&parsed_terms, pmu);
1438
1439 memset(&attr, 0, sizeof(attr));
1440 if (pmu->perf_event_attr_init_default)
1441 pmu->perf_event_attr_init_default(pmu, &attr);
1442
1443 attr.type = pmu->type;
1444
1445 if (list_empty(&parsed_terms.terms)) {
1446 evsel = __add_event(list, &parse_state->idx, &attr,
1447 /*init_attr=*/true, /*name=*/NULL,
1448 /*metric_id=*/NULL, pmu,
1449 /*config_terms=*/NULL, auto_merge_stats,
1450 /*cpu_list=*/NULL);
1451 return evsel ? 0 : -ENOMEM;
1452 }
1453
1454 /* Configure attr/terms with a known PMU, this will set hardcoded terms. */
1455 if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1456 parse_events_terms__exit(&parsed_terms);
1457 return -EINVAL;
1458 }
1459
1460 /* Look for event names in the terms and rewrite into format based terms. */
1461 if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, &parsed_terms,
1462 &info, &alias_rewrote_terms, err)) {
1463 parse_events_terms__exit(&parsed_terms);
1464 return -EINVAL;
1465 }
1466
1467 if (verbose > 1) {
1468 struct strbuf sb;
1469
1470 strbuf_init(&sb, /*hint=*/ 0);
1471 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1472 fprintf(stderr, "..after resolving event: %s/%s/\n", name, sb.buf);
1473 strbuf_release(&sb);
1474 }
1475
1476 /* Configure attr/terms again if an alias was expanded. */
1477 if (alias_rewrote_terms &&
1478 config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {
1479 parse_events_terms__exit(&parsed_terms);
1480 return -EINVAL;
1481 }
1482
1483 if (get_config_terms(&parsed_terms, &config_terms)) {
1484 parse_events_terms__exit(&parsed_terms);
1485 return -ENOMEM;
1486 }
1487
1488 /*
1489 * When using default config, record which bits of attr->config were
1490 * changed by the user.
1491 */
1492 if (pmu->perf_event_attr_init_default &&
1493 get_config_chgs(pmu, &parsed_terms, &config_terms)) {
1494 parse_events_terms__exit(&parsed_terms);
1495 return -ENOMEM;
1496 }
1497
1498 if (!parse_state->fake_pmu &&
1499 perf_pmu__config(pmu, &attr, &parsed_terms, parse_state->error)) {
1500 free_config_terms(&config_terms);
1501 parse_events_terms__exit(&parsed_terms);
1502 return -EINVAL;
1503 }
1504
1505 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true,
1506 get_config_name(&parsed_terms),
1507 get_config_metric_id(&parsed_terms), pmu,
1508 &config_terms, auto_merge_stats, /*cpu_list=*/NULL);
1509 if (!evsel) {
1510 parse_events_terms__exit(&parsed_terms);
1511 return -ENOMEM;
1512 }
1513
1514 if (evsel->name)
1515 evsel->use_config_name = true;
1516
1517 evsel->percore = config_term_percore(&evsel->config_terms);
1518
1519 if (parse_state->fake_pmu) {
1520 parse_events_terms__exit(&parsed_terms);
1521 return 0;
1522 }
1523
1524 parse_events_terms__exit(&parsed_terms);
1525 free((char *)evsel->unit);
1526 evsel->unit = strdup(info.unit);
1527 evsel->scale = info.scale;
1528 evsel->per_pkg = info.per_pkg;
1529 evsel->snapshot = info.snapshot;
1530 return 0;
1531}
1532
1533int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1534 const char *event_name,
1535 const struct parse_events_terms *const_parsed_terms,
1536 struct list_head **listp, void *loc_)
1537{
1538 struct parse_events_term *term;
1539 struct list_head *list = NULL;
1540 struct perf_pmu *pmu = NULL;
1541 YYLTYPE *loc = loc_;
1542 int ok = 0;
1543 const char *config;
1544 struct parse_events_terms parsed_terms;
1545
1546 *listp = NULL;
1547
1548 parse_events_terms__init(&parsed_terms);
1549 if (const_parsed_terms) {
1550 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);
1551
1552 if (ret)
1553 return ret;
1554 }
1555
1556 config = strdup(event_name);
1557 if (!config)
1558 goto out_err;
1559
1560 if (parse_events_term__num(&term,
1561 PARSE_EVENTS__TERM_TYPE_USER,
1562 config, /*num=*/1, /*novalue=*/true,
1563 loc, /*loc_val=*/NULL) < 0) {
1564 zfree(&config);
1565 goto out_err;
1566 }
1567 list_add_tail(&term->list, &parsed_terms.terms);
1568
1569 /* Add it for all PMUs that support the alias */
1570 list = malloc(sizeof(struct list_head));
1571 if (!list)
1572 goto out_err;
1573
1574 INIT_LIST_HEAD(list);
1575
1576 while ((pmu = perf_pmus__scan(pmu)) != NULL) {
1577 bool auto_merge_stats;
1578
1579 if (parse_events__filter_pmu(parse_state, pmu))
1580 continue;
1581
1582 if (!perf_pmu__have_event(pmu, event_name))
1583 continue;
1584
1585 auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
1586 if (!parse_events_add_pmu(parse_state, list, pmu->name,
1587 &parsed_terms, auto_merge_stats, loc)) {
1588 struct strbuf sb;
1589
1590 strbuf_init(&sb, /*hint=*/ 0);
1591 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1592 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf);
1593 strbuf_release(&sb);
1594 ok++;
1595 }
1596 }
1597
1598 if (parse_state->fake_pmu) {
1599 if (!parse_events_add_pmu(parse_state, list, event_name, &parsed_terms,
1600 /*auto_merge_stats=*/true, loc)) {
1601 struct strbuf sb;
1602
1603 strbuf_init(&sb, /*hint=*/ 0);
1604 parse_events_terms__to_strbuf(&parsed_terms, &sb);
1605 pr_debug("%s -> %s/%s/\n", event_name, "fake_pmu", sb.buf);
1606 strbuf_release(&sb);
1607 ok++;
1608 }
1609 }
1610
1611out_err:
1612 parse_events_terms__exit(&parsed_terms);
1613 if (ok)
1614 *listp = list;
1615 else
1616 free(list);
1617
1618 return ok ? 0 : -1;
1619}
1620
1621int parse_events__modifier_group(struct list_head *list,
1622 char *event_mod)
1623{
1624 return parse_events__modifier_event(list, event_mod, true);
1625}
1626
1627void parse_events__set_leader(char *name, struct list_head *list)
1628{
1629 struct evsel *leader;
1630
1631 if (list_empty(list)) {
1632 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1633 return;
1634 }
1635
1636 leader = list_first_entry(list, struct evsel, core.node);
1637 __perf_evlist__set_leader(list, &leader->core);
1638 leader->group_name = name;
1639}
1640
1641/* list_event is assumed to point to malloc'ed memory */
1642void parse_events_update_lists(struct list_head *list_event,
1643 struct list_head *list_all)
1644{
1645 /*
1646 * Called for single event definition. Update the
1647 * 'all event' list, and reinit the 'single event'
1648 * list, for next event definition.
1649 */
1650 list_splice_tail(list_event, list_all);
1651 free(list_event);
1652}
1653
1654struct event_modifier {
1655 int eu;
1656 int ek;
1657 int eh;
1658 int eH;
1659 int eG;
1660 int eI;
1661 int precise;
1662 int precise_max;
1663 int exclude_GH;
1664 int sample_read;
1665 int pinned;
1666 int weak;
1667 int exclusive;
1668 int bpf_counter;
1669};
1670
1671static int get_event_modifier(struct event_modifier *mod, char *str,
1672 struct evsel *evsel)
1673{
1674 int eu = evsel ? evsel->core.attr.exclude_user : 0;
1675 int ek = evsel ? evsel->core.attr.exclude_kernel : 0;
1676 int eh = evsel ? evsel->core.attr.exclude_hv : 0;
1677 int eH = evsel ? evsel->core.attr.exclude_host : 0;
1678 int eG = evsel ? evsel->core.attr.exclude_guest : 0;
1679 int eI = evsel ? evsel->core.attr.exclude_idle : 0;
1680 int precise = evsel ? evsel->core.attr.precise_ip : 0;
1681 int precise_max = 0;
1682 int sample_read = 0;
1683 int pinned = evsel ? evsel->core.attr.pinned : 0;
1684 int exclusive = evsel ? evsel->core.attr.exclusive : 0;
1685
1686 int exclude = eu | ek | eh;
1687 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1688 int weak = 0;
1689 int bpf_counter = 0;
1690
1691 memset(mod, 0, sizeof(*mod));
1692
1693 while (*str) {
1694 if (*str == 'u') {
1695 if (!exclude)
1696 exclude = eu = ek = eh = 1;
1697 if (!exclude_GH && !perf_guest)
1698 eG = 1;
1699 eu = 0;
1700 } else if (*str == 'k') {
1701 if (!exclude)
1702 exclude = eu = ek = eh = 1;
1703 ek = 0;
1704 } else if (*str == 'h') {
1705 if (!exclude)
1706 exclude = eu = ek = eh = 1;
1707 eh = 0;
1708 } else if (*str == 'G') {
1709 if (!exclude_GH)
1710 exclude_GH = eG = eH = 1;
1711 eG = 0;
1712 } else if (*str == 'H') {
1713 if (!exclude_GH)
1714 exclude_GH = eG = eH = 1;
1715 eH = 0;
1716 } else if (*str == 'I') {
1717 eI = 1;
1718 } else if (*str == 'p') {
1719 precise++;
1720 /* use of precise requires exclude_guest */
1721 if (!exclude_GH)
1722 eG = 1;
1723 } else if (*str == 'P') {
1724 precise_max = 1;
1725 } else if (*str == 'S') {
1726 sample_read = 1;
1727 } else if (*str == 'D') {
1728 pinned = 1;
1729 } else if (*str == 'e') {
1730 exclusive = 1;
1731 } else if (*str == 'W') {
1732 weak = 1;
1733 } else if (*str == 'b') {
1734 bpf_counter = 1;
1735 } else
1736 break;
1737
1738 ++str;
1739 }
1740
1741 /*
1742 * precise ip:
1743 *
1744 * 0 - SAMPLE_IP can have arbitrary skid
1745 * 1 - SAMPLE_IP must have constant skid
1746 * 2 - SAMPLE_IP requested to have 0 skid
1747 * 3 - SAMPLE_IP must have 0 skid
1748 *
1749 * See also PERF_RECORD_MISC_EXACT_IP
1750 */
1751 if (precise > 3)
1752 return -EINVAL;
1753
1754 mod->eu = eu;
1755 mod->ek = ek;
1756 mod->eh = eh;
1757 mod->eH = eH;
1758 mod->eG = eG;
1759 mod->eI = eI;
1760 mod->precise = precise;
1761 mod->precise_max = precise_max;
1762 mod->exclude_GH = exclude_GH;
1763 mod->sample_read = sample_read;
1764 mod->pinned = pinned;
1765 mod->weak = weak;
1766 mod->bpf_counter = bpf_counter;
1767 mod->exclusive = exclusive;
1768
1769 return 0;
1770}
1771
1772/*
1773 * Basic modifier sanity check to validate it contains only one
1774 * instance of any modifier (apart from 'p') present.
1775 */
1776static int check_modifier(char *str)
1777{
1778 char *p = str;
1779
1780 /* The sizeof includes 0 byte as well. */
1781 if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1))
1782 return -1;
1783
1784 while (*p) {
1785 if (*p != 'p' && strchr(p + 1, *p))
1786 return -1;
1787 p++;
1788 }
1789
1790 return 0;
1791}
1792
1793int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1794{
1795 struct evsel *evsel;
1796 struct event_modifier mod;
1797
1798 if (str == NULL)
1799 return 0;
1800
1801 if (check_modifier(str))
1802 return -EINVAL;
1803
1804 if (!add && get_event_modifier(&mod, str, NULL))
1805 return -EINVAL;
1806
1807 __evlist__for_each_entry(list, evsel) {
1808 if (add && get_event_modifier(&mod, str, evsel))
1809 return -EINVAL;
1810
1811 evsel->core.attr.exclude_user = mod.eu;
1812 evsel->core.attr.exclude_kernel = mod.ek;
1813 evsel->core.attr.exclude_hv = mod.eh;
1814 evsel->core.attr.precise_ip = mod.precise;
1815 evsel->core.attr.exclude_host = mod.eH;
1816 evsel->core.attr.exclude_guest = mod.eG;
1817 evsel->core.attr.exclude_idle = mod.eI;
1818 evsel->exclude_GH = mod.exclude_GH;
1819 evsel->sample_read = mod.sample_read;
1820 evsel->precise_max = mod.precise_max;
1821 evsel->weak_group = mod.weak;
1822 evsel->bpf_counter = mod.bpf_counter;
1823
1824 if (evsel__is_group_leader(evsel)) {
1825 evsel->core.attr.pinned = mod.pinned;
1826 evsel->core.attr.exclusive = mod.exclusive;
1827 }
1828 }
1829
1830 return 0;
1831}
1832
1833int parse_events_name(struct list_head *list, const char *name)
1834{
1835 struct evsel *evsel;
1836
1837 __evlist__for_each_entry(list, evsel) {
1838 if (!evsel->name) {
1839 evsel->name = strdup(name);
1840 if (!evsel->name)
1841 return -ENOMEM;
1842 }
1843 }
1844
1845 return 0;
1846}
1847
1848static int parse_events__scanner(const char *str,
1849 FILE *input,
1850 struct parse_events_state *parse_state)
1851{
1852 YY_BUFFER_STATE buffer;
1853 void *scanner;
1854 int ret;
1855
1856 ret = parse_events_lex_init_extra(parse_state, &scanner);
1857 if (ret)
1858 return ret;
1859
1860 if (str)
1861 buffer = parse_events__scan_string(str, scanner);
1862 else
1863 parse_events_set_in(input, scanner);
1864
1865#ifdef PARSER_DEBUG
1866 parse_events_debug = 1;
1867 parse_events_set_debug(1, scanner);
1868#endif
1869 ret = parse_events_parse(parse_state, scanner);
1870
1871 if (str) {
1872 parse_events__flush_buffer(buffer, scanner);
1873 parse_events__delete_buffer(buffer, scanner);
1874 }
1875 parse_events_lex_destroy(scanner);
1876 return ret;
1877}
1878
1879/*
1880 * parse event config string, return a list of event terms.
1881 */
1882int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input)
1883{
1884 struct parse_events_state parse_state = {
1885 .terms = NULL,
1886 .stoken = PE_START_TERMS,
1887 };
1888 int ret;
1889
1890 ret = parse_events__scanner(str, input, &parse_state);
1891 if (!ret)
1892 list_splice(&parse_state.terms->terms, &terms->terms);
1893
1894 zfree(&parse_state.terms);
1895 return ret;
1896}
1897
1898static int evsel__compute_group_pmu_name(struct evsel *evsel,
1899 const struct list_head *head)
1900{
1901 struct evsel *leader = evsel__leader(evsel);
1902 struct evsel *pos;
1903 const char *group_pmu_name;
1904 struct perf_pmu *pmu = evsel__find_pmu(evsel);
1905
1906 if (!pmu) {
1907 /*
1908 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU
1909 * is a core PMU, but in heterogeneous systems this is
1910 * unknown. For now pick the first core PMU.
1911 */
1912 pmu = perf_pmus__scan_core(NULL);
1913 }
1914 if (!pmu) {
1915 pr_debug("No PMU found for '%s'\n", evsel__name(evsel));
1916 return -EINVAL;
1917 }
1918 group_pmu_name = pmu->name;
1919 /*
1920 * Software events may be in a group with other uncore PMU events. Use
1921 * the pmu_name of the first non-software event to avoid breaking the
1922 * software event out of the group.
1923 *
1924 * Aux event leaders, like intel_pt, expect a group with events from
1925 * other PMUs, so substitute the AUX event's PMU in this case.
1926 */
1927 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) {
1928 struct perf_pmu *leader_pmu = evsel__find_pmu(leader);
1929
1930 if (!leader_pmu) {
1931 /* As with determining pmu above. */
1932 leader_pmu = perf_pmus__scan_core(NULL);
1933 }
1934 /*
1935 * Starting with the leader, find the first event with a named
1936 * non-software PMU. for_each_group_(member|evsel) isn't used as
1937 * the list isn't yet sorted putting evsel's in the same group
1938 * together.
1939 */
1940 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) {
1941 group_pmu_name = leader_pmu->name;
1942 } else if (leader->core.nr_members > 1) {
1943 list_for_each_entry(pos, head, core.node) {
1944 struct perf_pmu *pos_pmu;
1945
1946 if (pos == leader || evsel__leader(pos) != leader)
1947 continue;
1948 pos_pmu = evsel__find_pmu(pos);
1949 if (!pos_pmu) {
1950 /* As with determining pmu above. */
1951 pos_pmu = perf_pmus__scan_core(NULL);
1952 }
1953 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) {
1954 group_pmu_name = pos_pmu->name;
1955 break;
1956 }
1957 }
1958 }
1959 }
1960 /* Assign the actual name taking care that the fake PMU lacks a name. */
1961 evsel->group_pmu_name = strdup(group_pmu_name ?: "fake");
1962 return evsel->group_pmu_name ? 0 : -ENOMEM;
1963}
1964
1965__weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs)
1966{
1967 /* Order by insertion index. */
1968 return lhs->core.idx - rhs->core.idx;
1969}
1970
1971static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r)
1972{
1973 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node);
1974 const struct evsel *lhs = container_of(lhs_core, struct evsel, core);
1975 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node);
1976 const struct evsel *rhs = container_of(rhs_core, struct evsel, core);
1977 int *force_grouped_idx = _fg_idx;
1978 int lhs_sort_idx, rhs_sort_idx, ret;
1979 const char *lhs_pmu_name, *rhs_pmu_name;
1980 bool lhs_has_group, rhs_has_group;
1981
1982 /*
1983 * First sort by grouping/leader. Read the leader idx only if the evsel
1984 * is part of a group, by default ungrouped events will be sorted
1985 * relative to grouped events based on where the first ungrouped event
1986 * occurs. If both events don't have a group we want to fall-through to
1987 * the arch specific sorting, that can reorder and fix things like
1988 * Intel's topdown events.
1989 */
1990 if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) {
1991 lhs_has_group = true;
1992 lhs_sort_idx = lhs_core->leader->idx;
1993 } else {
1994 lhs_has_group = false;
1995 lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)
1996 ? *force_grouped_idx
1997 : lhs_core->idx;
1998 }
1999 if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) {
2000 rhs_has_group = true;
2001 rhs_sort_idx = rhs_core->leader->idx;
2002 } else {
2003 rhs_has_group = false;
2004 rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)
2005 ? *force_grouped_idx
2006 : rhs_core->idx;
2007 }
2008
2009 if (lhs_sort_idx != rhs_sort_idx)
2010 return lhs_sort_idx - rhs_sort_idx;
2011
2012 /* Group by PMU if there is a group. Groups can't span PMUs. */
2013 if (lhs_has_group && rhs_has_group) {
2014 lhs_pmu_name = lhs->group_pmu_name;
2015 rhs_pmu_name = rhs->group_pmu_name;
2016 ret = strcmp(lhs_pmu_name, rhs_pmu_name);
2017 if (ret)
2018 return ret;
2019 }
2020
2021 /* Architecture specific sorting. */
2022 return arch_evlist__cmp(lhs, rhs);
2023}
2024
2025static int parse_events__sort_events_and_fix_groups(struct list_head *list)
2026{
2027 int idx = 0, force_grouped_idx = -1;
2028 struct evsel *pos, *cur_leader = NULL;
2029 struct perf_evsel *cur_leaders_grp = NULL;
2030 bool idx_changed = false, cur_leader_force_grouped = false;
2031 int orig_num_leaders = 0, num_leaders = 0;
2032 int ret;
2033
2034 /*
2035 * Compute index to insert ungrouped events at. Place them where the
2036 * first ungrouped event appears.
2037 */
2038 list_for_each_entry(pos, list, core.node) {
2039 const struct evsel *pos_leader = evsel__leader(pos);
2040
2041 ret = evsel__compute_group_pmu_name(pos, list);
2042 if (ret)
2043 return ret;
2044
2045 if (pos == pos_leader)
2046 orig_num_leaders++;
2047
2048 /*
2049 * Ensure indexes are sequential, in particular for multiple
2050 * event lists being merged. The indexes are used to detect when
2051 * the user order is modified.
2052 */
2053 pos->core.idx = idx++;
2054
2055 /* Remember an index to sort all forced grouped events together to. */
2056 if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 &&
2057 arch_evsel__must_be_in_group(pos))
2058 force_grouped_idx = pos->core.idx;
2059 }
2060
2061 /* Sort events. */
2062 list_sort(&force_grouped_idx, list, evlist__cmp);
2063
2064 /*
2065 * Recompute groups, splitting for PMUs and adding groups for events
2066 * that require them.
2067 */
2068 idx = 0;
2069 list_for_each_entry(pos, list, core.node) {
2070 const struct evsel *pos_leader = evsel__leader(pos);
2071 const char *pos_pmu_name = pos->group_pmu_name;
2072 const char *cur_leader_pmu_name;
2073 bool pos_force_grouped = force_grouped_idx != -1 &&
2074 arch_evsel__must_be_in_group(pos);
2075
2076 /* Reset index and nr_members. */
2077 if (pos->core.idx != idx)
2078 idx_changed = true;
2079 pos->core.idx = idx++;
2080 pos->core.nr_members = 0;
2081
2082 /*
2083 * Set the group leader respecting the given groupings and that
2084 * groups can't span PMUs.
2085 */
2086 if (!cur_leader)
2087 cur_leader = pos;
2088
2089 cur_leader_pmu_name = cur_leader->group_pmu_name;
2090 if ((cur_leaders_grp != pos->core.leader &&
2091 (!pos_force_grouped || !cur_leader_force_grouped)) ||
2092 strcmp(cur_leader_pmu_name, pos_pmu_name)) {
2093 /* Event is for a different group/PMU than last. */
2094 cur_leader = pos;
2095 /*
2096 * Remember the leader's group before it is overwritten,
2097 * so that later events match as being in the same
2098 * group.
2099 */
2100 cur_leaders_grp = pos->core.leader;
2101 /*
2102 * Avoid forcing events into groups with events that
2103 * don't need to be in the group.
2104 */
2105 cur_leader_force_grouped = pos_force_grouped;
2106 }
2107 if (pos_leader != cur_leader) {
2108 /* The leader changed so update it. */
2109 evsel__set_leader(pos, cur_leader);
2110 }
2111 }
2112 list_for_each_entry(pos, list, core.node) {
2113 struct evsel *pos_leader = evsel__leader(pos);
2114
2115 if (pos == pos_leader)
2116 num_leaders++;
2117 pos_leader->core.nr_members++;
2118 }
2119 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0;
2120}
2121
2122int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter,
2123 struct parse_events_error *err, struct perf_pmu *fake_pmu,
2124 bool warn_if_reordered)
2125{
2126 struct parse_events_state parse_state = {
2127 .list = LIST_HEAD_INIT(parse_state.list),
2128 .idx = evlist->core.nr_entries,
2129 .error = err,
2130 .stoken = PE_START_EVENTS,
2131 .fake_pmu = fake_pmu,
2132 .pmu_filter = pmu_filter,
2133 .match_legacy_cache_terms = true,
2134 };
2135 int ret, ret2;
2136
2137 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state);
2138
2139 if (!ret && list_empty(&parse_state.list)) {
2140 WARN_ONCE(true, "WARNING: event parser found nothing\n");
2141 return -1;
2142 }
2143
2144 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list);
2145 if (ret2 < 0)
2146 return ret;
2147
2148 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus)
2149 pr_warning("WARNING: events were regrouped to match PMUs\n");
2150
2151 /*
2152 * Add list to the evlist even with errors to allow callers to clean up.
2153 */
2154 evlist__splice_list_tail(evlist, &parse_state.list);
2155
2156 if (!ret) {
2157 struct evsel *last;
2158
2159 last = evlist__last(evlist);
2160 last->cmdline_group_boundary = true;
2161
2162 return 0;
2163 }
2164
2165 /*
2166 * There are 2 users - builtin-record and builtin-test objects.
2167 * Both call evlist__delete in case of error, so we dont
2168 * need to bother.
2169 */
2170 return ret;
2171}
2172
2173int parse_event(struct evlist *evlist, const char *str)
2174{
2175 struct parse_events_error err;
2176 int ret;
2177
2178 parse_events_error__init(&err);
2179 ret = parse_events(evlist, str, &err);
2180 parse_events_error__exit(&err);
2181 return ret;
2182}
2183
2184struct parse_events_error_entry {
2185 /** @list: The list the error is part of. */
2186 struct list_head list;
2187 /** @idx: index in the parsed string */
2188 int idx;
2189 /** @str: string to display at the index */
2190 char *str;
2191 /** @help: optional help string */
2192 char *help;
2193};
2194
2195void parse_events_error__init(struct parse_events_error *err)
2196{
2197 INIT_LIST_HEAD(&err->list);
2198}
2199
2200void parse_events_error__exit(struct parse_events_error *err)
2201{
2202 struct parse_events_error_entry *pos, *tmp;
2203
2204 list_for_each_entry_safe(pos, tmp, &err->list, list) {
2205 zfree(&pos->str);
2206 zfree(&pos->help);
2207 list_del_init(&pos->list);
2208 free(pos);
2209 }
2210}
2211
2212void parse_events_error__handle(struct parse_events_error *err, int idx,
2213 char *str, char *help)
2214{
2215 struct parse_events_error_entry *entry;
2216
2217 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n"))
2218 goto out_free;
2219
2220 entry = zalloc(sizeof(*entry));
2221 if (!entry) {
2222 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n",
2223 str, help ?: "<no help>");
2224 goto out_free;
2225 }
2226 entry->idx = idx;
2227 entry->str = str;
2228 entry->help = help;
2229 list_add(&entry->list, &err->list);
2230 return;
2231out_free:
2232 free(str);
2233 free(help);
2234}
2235
2236#define MAX_WIDTH 1000
2237static int get_term_width(void)
2238{
2239 struct winsize ws;
2240
2241 get_term_dimensions(&ws);
2242 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
2243}
2244
2245static void __parse_events_error__print(int err_idx, const char *err_str,
2246 const char *err_help, const char *event)
2247{
2248 const char *str = "invalid or unsupported event: ";
2249 char _buf[MAX_WIDTH];
2250 char *buf = (char *) event;
2251 int idx = 0;
2252 if (err_str) {
2253 /* -2 for extra '' in the final fprintf */
2254 int width = get_term_width() - 2;
2255 int len_event = strlen(event);
2256 int len_str, max_len, cut = 0;
2257
2258 /*
2259 * Maximum error index indent, we will cut
2260 * the event string if it's bigger.
2261 */
2262 int max_err_idx = 13;
2263
2264 /*
2265 * Let's be specific with the message when
2266 * we have the precise error.
2267 */
2268 str = "event syntax error: ";
2269 len_str = strlen(str);
2270 max_len = width - len_str;
2271
2272 buf = _buf;
2273
2274 /* We're cutting from the beginning. */
2275 if (err_idx > max_err_idx)
2276 cut = err_idx - max_err_idx;
2277
2278 strncpy(buf, event + cut, max_len);
2279
2280 /* Mark cut parts with '..' on both sides. */
2281 if (cut)
2282 buf[0] = buf[1] = '.';
2283
2284 if ((len_event - cut) > max_len) {
2285 buf[max_len - 1] = buf[max_len - 2] = '.';
2286 buf[max_len] = 0;
2287 }
2288
2289 idx = len_str + err_idx - cut;
2290 }
2291
2292 fprintf(stderr, "%s'%s'\n", str, buf);
2293 if (idx) {
2294 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);
2295 if (err_help)
2296 fprintf(stderr, "\n%s\n", err_help);
2297 }
2298}
2299
2300void parse_events_error__print(const struct parse_events_error *err,
2301 const char *event)
2302{
2303 struct parse_events_error_entry *pos;
2304 bool first = true;
2305
2306 list_for_each_entry(pos, &err->list, list) {
2307 if (!first)
2308 fputs("\n", stderr);
2309 __parse_events_error__print(pos->idx, pos->str, pos->help, event);
2310 first = false;
2311 }
2312}
2313
2314/*
2315 * In the list of errors err, do any of the error strings (str) contain the
2316 * given needle string?
2317 */
2318bool parse_events_error__contains(const struct parse_events_error *err,
2319 const char *needle)
2320{
2321 struct parse_events_error_entry *pos;
2322
2323 list_for_each_entry(pos, &err->list, list) {
2324 if (strstr(pos->str, needle) != NULL)
2325 return true;
2326 }
2327 return false;
2328}
2329
2330#undef MAX_WIDTH
2331
2332int parse_events_option(const struct option *opt, const char *str,
2333 int unset __maybe_unused)
2334{
2335 struct parse_events_option_args *args = opt->value;
2336 struct parse_events_error err;
2337 int ret;
2338
2339 parse_events_error__init(&err);
2340 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err,
2341 /*fake_pmu=*/NULL, /*warn_if_reordered=*/true);
2342
2343 if (ret) {
2344 parse_events_error__print(&err, str);
2345 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2346 }
2347 parse_events_error__exit(&err);
2348
2349 return ret;
2350}
2351
2352int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)
2353{
2354 struct parse_events_option_args *args = opt->value;
2355 int ret;
2356
2357 if (*args->evlistp == NULL) {
2358 *args->evlistp = evlist__new();
2359
2360 if (*args->evlistp == NULL) {
2361 fprintf(stderr, "Not enough memory to create evlist\n");
2362 return -1;
2363 }
2364 }
2365 ret = parse_events_option(opt, str, unset);
2366 if (ret) {
2367 evlist__delete(*args->evlistp);
2368 *args->evlistp = NULL;
2369 }
2370
2371 return ret;
2372}
2373
2374static int
2375foreach_evsel_in_last_glob(struct evlist *evlist,
2376 int (*func)(struct evsel *evsel,
2377 const void *arg),
2378 const void *arg)
2379{
2380 struct evsel *last = NULL;
2381 int err;
2382
2383 /*
2384 * Don't return when list_empty, give func a chance to report
2385 * error when it found last == NULL.
2386 *
2387 * So no need to WARN here, let *func do this.
2388 */
2389 if (evlist->core.nr_entries > 0)
2390 last = evlist__last(evlist);
2391
2392 do {
2393 err = (*func)(last, arg);
2394 if (err)
2395 return -1;
2396 if (!last)
2397 return 0;
2398
2399 if (last->core.node.prev == &evlist->core.entries)
2400 return 0;
2401 last = list_entry(last->core.node.prev, struct evsel, core.node);
2402 } while (!last->cmdline_group_boundary);
2403
2404 return 0;
2405}
2406
2407static int set_filter(struct evsel *evsel, const void *arg)
2408{
2409 const char *str = arg;
2410 bool found = false;
2411 int nr_addr_filters = 0;
2412 struct perf_pmu *pmu = NULL;
2413
2414 if (evsel == NULL) {
2415 fprintf(stderr,
2416 "--filter option should follow a -e tracepoint or HW tracer option\n");
2417 return -1;
2418 }
2419
2420 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2421 if (evsel__append_tp_filter(evsel, str) < 0) {
2422 fprintf(stderr,
2423 "not enough memory to hold filter string\n");
2424 return -1;
2425 }
2426
2427 return 0;
2428 }
2429
2430 while ((pmu = perf_pmus__scan(pmu)) != NULL)
2431 if (pmu->type == evsel->core.attr.type) {
2432 found = true;
2433 break;
2434 }
2435
2436 if (found)
2437 perf_pmu__scan_file(pmu, "nr_addr_filters",
2438 "%d", &nr_addr_filters);
2439
2440 if (!nr_addr_filters)
2441 return perf_bpf_filter__parse(&evsel->bpf_filters, str);
2442
2443 if (evsel__append_addr_filter(evsel, str) < 0) {
2444 fprintf(stderr,
2445 "not enough memory to hold filter string\n");
2446 return -1;
2447 }
2448
2449 return 0;
2450}
2451
2452int parse_filter(const struct option *opt, const char *str,
2453 int unset __maybe_unused)
2454{
2455 struct evlist *evlist = *(struct evlist **)opt->value;
2456
2457 return foreach_evsel_in_last_glob(evlist, set_filter,
2458 (const void *)str);
2459}
2460
2461static int add_exclude_perf_filter(struct evsel *evsel,
2462 const void *arg __maybe_unused)
2463{
2464 char new_filter[64];
2465
2466 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2467 fprintf(stderr,
2468 "--exclude-perf option should follow a -e tracepoint option\n");
2469 return -1;
2470 }
2471
2472 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2473
2474 if (evsel__append_tp_filter(evsel, new_filter) < 0) {
2475 fprintf(stderr,
2476 "not enough memory to hold filter string\n");
2477 return -1;
2478 }
2479
2480 return 0;
2481}
2482
2483int exclude_perf(const struct option *opt,
2484 const char *arg __maybe_unused,
2485 int unset __maybe_unused)
2486{
2487 struct evlist *evlist = *(struct evlist **)opt->value;
2488
2489 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2490 NULL);
2491}
2492
2493int parse_events__is_hardcoded_term(struct parse_events_term *term)
2494{
2495 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2496}
2497
2498static int new_term(struct parse_events_term **_term,
2499 struct parse_events_term *temp,
2500 char *str, u64 num)
2501{
2502 struct parse_events_term *term;
2503
2504 term = malloc(sizeof(*term));
2505 if (!term)
2506 return -ENOMEM;
2507
2508 *term = *temp;
2509 INIT_LIST_HEAD(&term->list);
2510 term->weak = false;
2511
2512 switch (term->type_val) {
2513 case PARSE_EVENTS__TERM_TYPE_NUM:
2514 term->val.num = num;
2515 break;
2516 case PARSE_EVENTS__TERM_TYPE_STR:
2517 term->val.str = str;
2518 break;
2519 default:
2520 free(term);
2521 return -EINVAL;
2522 }
2523
2524 *_term = term;
2525 return 0;
2526}
2527
2528int parse_events_term__num(struct parse_events_term **term,
2529 enum parse_events__term_type type_term,
2530 const char *config, u64 num,
2531 bool no_value,
2532 void *loc_term_, void *loc_val_)
2533{
2534 YYLTYPE *loc_term = loc_term_;
2535 YYLTYPE *loc_val = loc_val_;
2536
2537 struct parse_events_term temp = {
2538 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2539 .type_term = type_term,
2540 .config = config ? : strdup(config_term_name(type_term)),
2541 .no_value = no_value,
2542 .err_term = loc_term ? loc_term->first_column : 0,
2543 .err_val = loc_val ? loc_val->first_column : 0,
2544 };
2545
2546 return new_term(term, &temp, /*str=*/NULL, num);
2547}
2548
2549int parse_events_term__str(struct parse_events_term **term,
2550 enum parse_events__term_type type_term,
2551 char *config, char *str,
2552 void *loc_term_, void *loc_val_)
2553{
2554 YYLTYPE *loc_term = loc_term_;
2555 YYLTYPE *loc_val = loc_val_;
2556
2557 struct parse_events_term temp = {
2558 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2559 .type_term = type_term,
2560 .config = config,
2561 .err_term = loc_term ? loc_term->first_column : 0,
2562 .err_val = loc_val ? loc_val->first_column : 0,
2563 };
2564
2565 return new_term(term, &temp, str, /*num=*/0);
2566}
2567
2568int parse_events_term__term(struct parse_events_term **term,
2569 enum parse_events__term_type term_lhs,
2570 enum parse_events__term_type term_rhs,
2571 void *loc_term, void *loc_val)
2572{
2573 return parse_events_term__str(term, term_lhs, NULL,
2574 strdup(config_term_name(term_rhs)),
2575 loc_term, loc_val);
2576}
2577
2578int parse_events_term__clone(struct parse_events_term **new,
2579 struct parse_events_term *term)
2580{
2581 char *str;
2582 struct parse_events_term temp = *term;
2583
2584 temp.used = false;
2585 if (term->config) {
2586 temp.config = strdup(term->config);
2587 if (!temp.config)
2588 return -ENOMEM;
2589 }
2590 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2591 return new_term(new, &temp, /*str=*/NULL, term->val.num);
2592
2593 str = strdup(term->val.str);
2594 if (!str) {
2595 zfree(&temp.config);
2596 return -ENOMEM;
2597 }
2598 return new_term(new, &temp, str, /*num=*/0);
2599}
2600
2601void parse_events_term__delete(struct parse_events_term *term)
2602{
2603 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
2604 zfree(&term->val.str);
2605
2606 zfree(&term->config);
2607 free(term);
2608}
2609
2610static int parse_events_terms__copy(const struct parse_events_terms *src,
2611 struct parse_events_terms *dest)
2612{
2613 struct parse_events_term *term;
2614
2615 list_for_each_entry (term, &src->terms, list) {
2616 struct parse_events_term *n;
2617 int ret;
2618
2619 ret = parse_events_term__clone(&n, term);
2620 if (ret)
2621 return ret;
2622
2623 list_add_tail(&n->list, &dest->terms);
2624 }
2625 return 0;
2626}
2627
2628void parse_events_terms__init(struct parse_events_terms *terms)
2629{
2630 INIT_LIST_HEAD(&terms->terms);
2631}
2632
2633void parse_events_terms__exit(struct parse_events_terms *terms)
2634{
2635 struct parse_events_term *term, *h;
2636
2637 list_for_each_entry_safe(term, h, &terms->terms, list) {
2638 list_del_init(&term->list);
2639 parse_events_term__delete(term);
2640 }
2641}
2642
2643void parse_events_terms__delete(struct parse_events_terms *terms)
2644{
2645 if (!terms)
2646 return;
2647 parse_events_terms__exit(terms);
2648 free(terms);
2649}
2650
2651int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb)
2652{
2653 struct parse_events_term *term;
2654 bool first = true;
2655
2656 if (!terms)
2657 return 0;
2658
2659 list_for_each_entry(term, &terms->terms, list) {
2660 int ret;
2661
2662 if (!first) {
2663 ret = strbuf_addch(sb, ',');
2664 if (ret < 0)
2665 return ret;
2666 }
2667 first = false;
2668
2669 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)
2670 if (term->no_value) {
2671 assert(term->val.num == 1);
2672 ret = strbuf_addf(sb, "%s", term->config);
2673 } else
2674 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num);
2675 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
2676 if (term->config) {
2677 ret = strbuf_addf(sb, "%s=", term->config);
2678 if (ret < 0)
2679 return ret;
2680 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) {
2681 ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term));
2682 if (ret < 0)
2683 return ret;
2684 }
2685 assert(!term->no_value);
2686 ret = strbuf_addf(sb, "%s", term->val.str);
2687 }
2688 if (ret < 0)
2689 return ret;
2690 }
2691 return 0;
2692}
2693
2694void parse_events_evlist_error(struct parse_events_state *parse_state,
2695 int idx, const char *str)
2696{
2697 if (!parse_state->error)
2698 return;
2699
2700 parse_events_error__handle(parse_state->error, idx, strdup(str), NULL);
2701}
2702
2703static void config_terms_list(char *buf, size_t buf_sz)
2704{
2705 int i;
2706 bool first = true;
2707
2708 buf[0] = '\0';
2709 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2710 const char *name = config_term_name(i);
2711
2712 if (!config_term_avail(i, NULL))
2713 continue;
2714 if (!name)
2715 continue;
2716 if (name[0] == '<')
2717 continue;
2718
2719 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2720 return;
2721
2722 if (!first)
2723 strcat(buf, ",");
2724 else
2725 first = false;
2726 strcat(buf, name);
2727 }
2728}
2729
2730/*
2731 * Return string contains valid config terms of an event.
2732 * @additional_terms: For terms such as PMU sysfs terms.
2733 */
2734char *parse_events_formats_error_string(char *additional_terms)
2735{
2736 char *str;
2737 /* "no-overwrite" is the longest name */
2738 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2739 (sizeof("no-overwrite") - 1)];
2740
2741 config_terms_list(static_terms, sizeof(static_terms));
2742 /* valid terms */
2743 if (additional_terms) {
2744 if (asprintf(&str, "valid terms: %s,%s",
2745 additional_terms, static_terms) < 0)
2746 goto fail;
2747 } else {
2748 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2749 goto fail;
2750 }
2751 return str;
2752
2753fail:
2754 return NULL;
2755}