1#include "../../../include/linux/hw_breakpoint.h"
2#include "util.h"
3#include "../perf.h"
4#include "parse-options.h"
5#include "parse-events.h"
6#include "exec_cmd.h"
7#include "string.h"
8#include "symbol.h"
9#include "cache.h"
10#include "header.h"
11#include "debugfs.h"
12
13int nr_counters;
14
15struct perf_event_attr attrs[MAX_COUNTERS];
16char *filters[MAX_COUNTERS];
17
18struct event_symbol {
19 u8 type;
20 u64 config;
21 const char *symbol;
22 const char *alias;
23};
24
25enum event_result {
26 EVT_FAILED,
27 EVT_HANDLED,
28 EVT_HANDLED_ALL
29};
30
31char debugfs_path[MAXPATHLEN];
32
33#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
34#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
35
36static struct event_symbol event_symbols[] = {
37 { CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
38 { CHW(INSTRUCTIONS), "instructions", "" },
39 { CHW(CACHE_REFERENCES), "cache-references", "" },
40 { CHW(CACHE_MISSES), "cache-misses", "" },
41 { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
42 { CHW(BRANCH_MISSES), "branch-misses", "" },
43 { CHW(BUS_CYCLES), "bus-cycles", "" },
44
45 { CSW(CPU_CLOCK), "cpu-clock", "" },
46 { CSW(TASK_CLOCK), "task-clock", "" },
47 { CSW(PAGE_FAULTS), "page-faults", "faults" },
48 { CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
49 { CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
50 { CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
51 { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
52 { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
53 { CSW(EMULATION_FAULTS), "emulation-faults", "" },
54};
55
56#define __PERF_EVENT_FIELD(config, name) \
57 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
58
59#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
60#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
61#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
62#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
63
64static const char *hw_event_names[] = {
65 "cycles",
66 "instructions",
67 "cache-references",
68 "cache-misses",
69 "branches",
70 "branch-misses",
71 "bus-cycles",
72};
73
74static const char *sw_event_names[] = {
75 "cpu-clock-msecs",
76 "task-clock-msecs",
77 "page-faults",
78 "context-switches",
79 "CPU-migrations",
80 "minor-faults",
81 "major-faults",
82 "alignment-faults",
83 "emulation-faults",
84};
85
86#define MAX_ALIASES 8
87
88static const char *hw_cache[][MAX_ALIASES] = {
89 { "L1-dcache", "l1-d", "l1d", "L1-data", },
90 { "L1-icache", "l1-i", "l1i", "L1-instruction", },
91 { "LLC", "L2" },
92 { "dTLB", "d-tlb", "Data-TLB", },
93 { "iTLB", "i-tlb", "Instruction-TLB", },
94 { "branch", "branches", "bpu", "btb", "bpc", },
95};
96
97static const char *hw_cache_op[][MAX_ALIASES] = {
98 { "load", "loads", "read", },
99 { "store", "stores", "write", },
100 { "prefetch", "prefetches", "speculative-read", "speculative-load", },
101};
102
103static const char *hw_cache_result[][MAX_ALIASES] = {
104 { "refs", "Reference", "ops", "access", },
105 { "misses", "miss", },
106};
107
108#define C(x) PERF_COUNT_HW_CACHE_##x
109#define CACHE_READ (1 << C(OP_READ))
110#define CACHE_WRITE (1 << C(OP_WRITE))
111#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
112#define COP(x) (1 << x)
113
114
115
116
117
118
119static unsigned long hw_cache_stat[C(MAX)] = {
120 [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
121 [C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
122 [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
123 [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
124 [C(ITLB)] = (CACHE_READ),
125 [C(BPU)] = (CACHE_READ),
126};
127
128#define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
129 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
130 if (sys_dirent.d_type == DT_DIR && \
131 (strcmp(sys_dirent.d_name, ".")) && \
132 (strcmp(sys_dirent.d_name, "..")))
133
134static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
135{
136 char evt_path[MAXPATHLEN];
137 int fd;
138
139 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
140 sys_dir->d_name, evt_dir->d_name);
141 fd = open(evt_path, O_RDONLY);
142 if (fd < 0)
143 return -EINVAL;
144 close(fd);
145
146 return 0;
147}
148
149#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
150 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
151 if (evt_dirent.d_type == DT_DIR && \
152 (strcmp(evt_dirent.d_name, ".")) && \
153 (strcmp(evt_dirent.d_name, "..")) && \
154 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
155
156#define MAX_EVENT_LENGTH 512
157
158
159struct tracepoint_path *tracepoint_id_to_path(u64 config)
160{
161 struct tracepoint_path *path = NULL;
162 DIR *sys_dir, *evt_dir;
163 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
164 char id_buf[4];
165 int fd;
166 u64 id;
167 char evt_path[MAXPATHLEN];
168 char dir_path[MAXPATHLEN];
169
170 if (debugfs_valid_mountpoint(debugfs_path))
171 return NULL;
172
173 sys_dir = opendir(debugfs_path);
174 if (!sys_dir)
175 return NULL;
176
177 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
178
179 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
180 sys_dirent.d_name);
181 evt_dir = opendir(dir_path);
182 if (!evt_dir)
183 continue;
184
185 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
186
187 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
188 evt_dirent.d_name);
189 fd = open(evt_path, O_RDONLY);
190 if (fd < 0)
191 continue;
192 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
193 close(fd);
194 continue;
195 }
196 close(fd);
197 id = atoll(id_buf);
198 if (id == config) {
199 closedir(evt_dir);
200 closedir(sys_dir);
201 path = zalloc(sizeof(*path));
202 path->system = malloc(MAX_EVENT_LENGTH);
203 if (!path->system) {
204 free(path);
205 return NULL;
206 }
207 path->name = malloc(MAX_EVENT_LENGTH);
208 if (!path->name) {
209 free(path->system);
210 free(path);
211 return NULL;
212 }
213 strncpy(path->system, sys_dirent.d_name,
214 MAX_EVENT_LENGTH);
215 strncpy(path->name, evt_dirent.d_name,
216 MAX_EVENT_LENGTH);
217 return path;
218 }
219 }
220 closedir(evt_dir);
221 }
222
223 closedir(sys_dir);
224 return NULL;
225}
226
227#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
228static const char *tracepoint_id_to_name(u64 config)
229{
230 static char buf[TP_PATH_LEN];
231 struct tracepoint_path *path;
232
233 path = tracepoint_id_to_path(config);
234 if (path) {
235 snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
236 free(path->name);
237 free(path->system);
238 free(path);
239 } else
240 snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
241
242 return buf;
243}
244
245static int is_cache_op_valid(u8 cache_type, u8 cache_op)
246{
247 if (hw_cache_stat[cache_type] & COP(cache_op))
248 return 1;
249 else
250 return 0;
251}
252
253static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
254{
255 static char name[50];
256
257 if (cache_result) {
258 sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
259 hw_cache_op[cache_op][0],
260 hw_cache_result[cache_result][0]);
261 } else {
262 sprintf(name, "%s-%s", hw_cache[cache_type][0],
263 hw_cache_op[cache_op][1]);
264 }
265
266 return name;
267}
268
269const char *event_name(int counter)
270{
271 u64 config = attrs[counter].config;
272 int type = attrs[counter].type;
273
274 return __event_name(type, config);
275}
276
277const char *__event_name(int type, u64 config)
278{
279 static char buf[32];
280
281 if (type == PERF_TYPE_RAW) {
282 sprintf(buf, "raw 0x%llx", config);
283 return buf;
284 }
285
286 switch (type) {
287 case PERF_TYPE_HARDWARE:
288 if (config < PERF_COUNT_HW_MAX)
289 return hw_event_names[config];
290 return "unknown-hardware";
291
292 case PERF_TYPE_HW_CACHE: {
293 u8 cache_type, cache_op, cache_result;
294
295 cache_type = (config >> 0) & 0xff;
296 if (cache_type > PERF_COUNT_HW_CACHE_MAX)
297 return "unknown-ext-hardware-cache-type";
298
299 cache_op = (config >> 8) & 0xff;
300 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
301 return "unknown-ext-hardware-cache-op";
302
303 cache_result = (config >> 16) & 0xff;
304 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
305 return "unknown-ext-hardware-cache-result";
306
307 if (!is_cache_op_valid(cache_type, cache_op))
308 return "invalid-cache";
309
310 return event_cache_name(cache_type, cache_op, cache_result);
311 }
312
313 case PERF_TYPE_SOFTWARE:
314 if (config < PERF_COUNT_SW_MAX)
315 return sw_event_names[config];
316 return "unknown-software";
317
318 case PERF_TYPE_TRACEPOINT:
319 return tracepoint_id_to_name(config);
320
321 default:
322 break;
323 }
324
325 return "unknown";
326}
327
328static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
329{
330 int i, j;
331 int n, longest = -1;
332
333 for (i = 0; i < size; i++) {
334 for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
335 n = strlen(names[i][j]);
336 if (n > longest && !strncasecmp(*str, names[i][j], n))
337 longest = n;
338 }
339 if (longest > 0) {
340 *str += longest;
341 return i;
342 }
343 }
344
345 return -1;
346}
347
348static enum event_result
349parse_generic_hw_event(const char **str, struct perf_event_attr *attr)
350{
351 const char *s = *str;
352 int cache_type = -1, cache_op = -1, cache_result = -1;
353
354 cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX);
355
356
357
358
359 if (cache_type == -1)
360 return EVT_FAILED;
361
362 while ((cache_op == -1 || cache_result == -1) && *s == '-') {
363 ++s;
364
365 if (cache_op == -1) {
366 cache_op = parse_aliases(&s, hw_cache_op,
367 PERF_COUNT_HW_CACHE_OP_MAX);
368 if (cache_op >= 0) {
369 if (!is_cache_op_valid(cache_type, cache_op))
370 return 0;
371 continue;
372 }
373 }
374
375 if (cache_result == -1) {
376 cache_result = parse_aliases(&s, hw_cache_result,
377 PERF_COUNT_HW_CACHE_RESULT_MAX);
378 if (cache_result >= 0)
379 continue;
380 }
381
382
383
384
385
386 --s;
387 break;
388 }
389
390
391
392
393 if (cache_op == -1)
394 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
395
396
397
398
399 if (cache_result == -1)
400 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
401
402 attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
403 attr->type = PERF_TYPE_HW_CACHE;
404
405 *str = s;
406 return EVT_HANDLED;
407}
408
409static enum event_result
410parse_single_tracepoint_event(char *sys_name,
411 const char *evt_name,
412 unsigned int evt_length,
413 struct perf_event_attr *attr,
414 const char **strp)
415{
416 char evt_path[MAXPATHLEN];
417 char id_buf[4];
418 u64 id;
419 int fd;
420
421 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
422 sys_name, evt_name);
423
424 fd = open(evt_path, O_RDONLY);
425 if (fd < 0)
426 return EVT_FAILED;
427
428 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
429 close(fd);
430 return EVT_FAILED;
431 }
432
433 close(fd);
434 id = atoll(id_buf);
435 attr->config = id;
436 attr->type = PERF_TYPE_TRACEPOINT;
437 *strp = evt_name + evt_length;
438
439 attr->sample_type |= PERF_SAMPLE_RAW;
440 attr->sample_type |= PERF_SAMPLE_TIME;
441 attr->sample_type |= PERF_SAMPLE_CPU;
442
443 attr->sample_period = 1;
444
445
446 return EVT_HANDLED;
447}
448
449
450#define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
451static enum event_result
452parse_multiple_tracepoint_event(char *sys_name, const char *evt_exp,
453 char *flags)
454{
455 char evt_path[MAXPATHLEN];
456 struct dirent *evt_ent;
457 DIR *evt_dir;
458
459 snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name);
460 evt_dir = opendir(evt_path);
461
462 if (!evt_dir) {
463 perror("Can't open event dir");
464 return EVT_FAILED;
465 }
466
467 while ((evt_ent = readdir(evt_dir))) {
468 char event_opt[MAX_EVOPT_LEN + 1];
469 int len;
470
471 if (!strcmp(evt_ent->d_name, ".")
472 || !strcmp(evt_ent->d_name, "..")
473 || !strcmp(evt_ent->d_name, "enable")
474 || !strcmp(evt_ent->d_name, "filter"))
475 continue;
476
477 if (!strglobmatch(evt_ent->d_name, evt_exp))
478 continue;
479
480 len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
481 evt_ent->d_name, flags ? ":" : "",
482 flags ?: "");
483 if (len < 0)
484 return EVT_FAILED;
485
486 if (parse_events(NULL, event_opt, 0))
487 return EVT_FAILED;
488 }
489
490 return EVT_HANDLED_ALL;
491}
492
493
494static enum event_result parse_tracepoint_event(const char **strp,
495 struct perf_event_attr *attr)
496{
497 const char *evt_name;
498 char *flags;
499 char sys_name[MAX_EVENT_LENGTH];
500 unsigned int sys_length, evt_length;
501
502 if (debugfs_valid_mountpoint(debugfs_path))
503 return 0;
504
505 evt_name = strchr(*strp, ':');
506 if (!evt_name)
507 return EVT_FAILED;
508
509 sys_length = evt_name - *strp;
510 if (sys_length >= MAX_EVENT_LENGTH)
511 return 0;
512
513 strncpy(sys_name, *strp, sys_length);
514 sys_name[sys_length] = '\0';
515 evt_name = evt_name + 1;
516
517 flags = strchr(evt_name, ':');
518 if (flags) {
519
520 evt_name = strndup(evt_name, flags - evt_name);
521 flags++;
522 }
523
524 evt_length = strlen(evt_name);
525 if (evt_length >= MAX_EVENT_LENGTH)
526 return EVT_FAILED;
527
528 if (strpbrk(evt_name, "*?")) {
529 *strp = evt_name + evt_length;
530 return parse_multiple_tracepoint_event(sys_name, evt_name,
531 flags);
532 } else
533 return parse_single_tracepoint_event(sys_name, evt_name,
534 evt_length, attr, strp);
535}
536
537static enum event_result
538parse_breakpoint_type(const char *type, const char **strp,
539 struct perf_event_attr *attr)
540{
541 int i;
542
543 for (i = 0; i < 3; i++) {
544 if (!type[i])
545 break;
546
547 switch (type[i]) {
548 case 'r':
549 attr->bp_type |= HW_BREAKPOINT_R;
550 break;
551 case 'w':
552 attr->bp_type |= HW_BREAKPOINT_W;
553 break;
554 case 'x':
555 attr->bp_type |= HW_BREAKPOINT_X;
556 break;
557 default:
558 return EVT_FAILED;
559 }
560 }
561 if (!attr->bp_type)
562 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
563
564 *strp = type + i;
565
566 return EVT_HANDLED;
567}
568
569static enum event_result
570parse_breakpoint_event(const char **strp, struct perf_event_attr *attr)
571{
572 const char *target;
573 const char *type;
574 char *endaddr;
575 u64 addr;
576 enum event_result err;
577
578 target = strchr(*strp, ':');
579 if (!target)
580 return EVT_FAILED;
581
582 if (strncmp(*strp, "mem", target - *strp) != 0)
583 return EVT_FAILED;
584
585 target++;
586
587 addr = strtoull(target, &endaddr, 0);
588 if (target == endaddr)
589 return EVT_FAILED;
590
591 attr->bp_addr = addr;
592 *strp = endaddr;
593
594 type = strchr(target, ':');
595
596
597 if (!type) {
598 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
599 } else {
600 err = parse_breakpoint_type(++type, strp, attr);
601 if (err == EVT_FAILED)
602 return EVT_FAILED;
603 }
604
605
606 attr->bp_len = HW_BREAKPOINT_LEN_4;
607 attr->type = PERF_TYPE_BREAKPOINT;
608
609 return EVT_HANDLED;
610}
611
612static int check_events(const char *str, unsigned int i)
613{
614 int n;
615
616 n = strlen(event_symbols[i].symbol);
617 if (!strncmp(str, event_symbols[i].symbol, n))
618 return n;
619
620 n = strlen(event_symbols[i].alias);
621 if (n)
622 if (!strncmp(str, event_symbols[i].alias, n))
623 return n;
624 return 0;
625}
626
627static enum event_result
628parse_symbolic_event(const char **strp, struct perf_event_attr *attr)
629{
630 const char *str = *strp;
631 unsigned int i;
632 int n;
633
634 for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
635 n = check_events(str, i);
636 if (n > 0) {
637 attr->type = event_symbols[i].type;
638 attr->config = event_symbols[i].config;
639 *strp = str + n;
640 return EVT_HANDLED;
641 }
642 }
643 return EVT_FAILED;
644}
645
646static enum event_result
647parse_raw_event(const char **strp, struct perf_event_attr *attr)
648{
649 const char *str = *strp;
650 u64 config;
651 int n;
652
653 if (*str != 'r')
654 return EVT_FAILED;
655 n = hex2u64(str + 1, &config);
656 if (n > 0) {
657 *strp = str + n + 1;
658 attr->type = PERF_TYPE_RAW;
659 attr->config = config;
660 return EVT_HANDLED;
661 }
662 return EVT_FAILED;
663}
664
665static enum event_result
666parse_numeric_event(const char **strp, struct perf_event_attr *attr)
667{
668 const char *str = *strp;
669 char *endp;
670 unsigned long type;
671 u64 config;
672
673 type = strtoul(str, &endp, 0);
674 if (endp > str && type < PERF_TYPE_MAX && *endp == ':') {
675 str = endp + 1;
676 config = strtoul(str, &endp, 0);
677 if (endp > str) {
678 attr->type = type;
679 attr->config = config;
680 *strp = endp;
681 return EVT_HANDLED;
682 }
683 }
684 return EVT_FAILED;
685}
686
687static enum event_result
688parse_event_modifier(const char **strp, struct perf_event_attr *attr)
689{
690 const char *str = *strp;
691 int exclude = 0;
692 int eu = 0, ek = 0, eh = 0, precise = 0;
693
694 if (*str++ != ':')
695 return 0;
696 while (*str) {
697 if (*str == 'u') {
698 if (!exclude)
699 exclude = eu = ek = eh = 1;
700 eu = 0;
701 } else if (*str == 'k') {
702 if (!exclude)
703 exclude = eu = ek = eh = 1;
704 ek = 0;
705 } else if (*str == 'h') {
706 if (!exclude)
707 exclude = eu = ek = eh = 1;
708 eh = 0;
709 } else if (*str == 'p') {
710 precise++;
711 } else
712 break;
713
714 ++str;
715 }
716 if (str >= *strp + 2) {
717 *strp = str;
718 attr->exclude_user = eu;
719 attr->exclude_kernel = ek;
720 attr->exclude_hv = eh;
721 attr->precise_ip = precise;
722 return 1;
723 }
724 return 0;
725}
726
727
728
729
730
731static enum event_result
732parse_event_symbols(const char **str, struct perf_event_attr *attr)
733{
734 enum event_result ret;
735
736 ret = parse_tracepoint_event(str, attr);
737 if (ret != EVT_FAILED)
738 goto modifier;
739
740 ret = parse_raw_event(str, attr);
741 if (ret != EVT_FAILED)
742 goto modifier;
743
744 ret = parse_numeric_event(str, attr);
745 if (ret != EVT_FAILED)
746 goto modifier;
747
748 ret = parse_symbolic_event(str, attr);
749 if (ret != EVT_FAILED)
750 goto modifier;
751
752 ret = parse_generic_hw_event(str, attr);
753 if (ret != EVT_FAILED)
754 goto modifier;
755
756 ret = parse_breakpoint_event(str, attr);
757 if (ret != EVT_FAILED)
758 goto modifier;
759
760 fprintf(stderr, "invalid or unsupported event: '%s'\n", *str);
761 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
762 return EVT_FAILED;
763
764modifier:
765 parse_event_modifier(str, attr);
766
767 return ret;
768}
769
770static int store_event_type(const char *orgname)
771{
772 char filename[PATH_MAX], *c;
773 FILE *file;
774 int id, n;
775
776 sprintf(filename, "%s/", debugfs_path);
777 strncat(filename, orgname, strlen(orgname));
778 strcat(filename, "/id");
779
780 c = strchr(filename, ':');
781 if (c)
782 *c = '/';
783
784 file = fopen(filename, "r");
785 if (!file)
786 return 0;
787 n = fscanf(file, "%i", &id);
788 fclose(file);
789 if (n < 1) {
790 pr_err("cannot store event ID\n");
791 return -EINVAL;
792 }
793 return perf_header__push_event(id, orgname);
794}
795
796int parse_events(const struct option *opt __used, const char *str, int unset __used)
797{
798 struct perf_event_attr attr;
799 enum event_result ret;
800
801 if (strchr(str, ':'))
802 if (store_event_type(str) < 0)
803 return -1;
804
805 for (;;) {
806 if (nr_counters == MAX_COUNTERS)
807 return -1;
808
809 memset(&attr, 0, sizeof(attr));
810 ret = parse_event_symbols(&str, &attr);
811 if (ret == EVT_FAILED)
812 return -1;
813
814 if (!(*str == 0 || *str == ',' || isspace(*str)))
815 return -1;
816
817 if (ret != EVT_HANDLED_ALL) {
818 attrs[nr_counters] = attr;
819 nr_counters++;
820 }
821
822 if (*str == 0)
823 break;
824 if (*str == ',')
825 ++str;
826 while (isspace(*str))
827 ++str;
828 }
829
830 return 0;
831}
832
833int parse_filter(const struct option *opt __used, const char *str,
834 int unset __used)
835{
836 int i = nr_counters - 1;
837 int len = strlen(str);
838
839 if (i < 0 || attrs[i].type != PERF_TYPE_TRACEPOINT) {
840 fprintf(stderr,
841 "-F option should follow a -e tracepoint option\n");
842 return -1;
843 }
844
845 filters[i] = malloc(len + 1);
846 if (!filters[i]) {
847 fprintf(stderr, "not enough memory to hold filter string\n");
848 return -1;
849 }
850 strcpy(filters[i], str);
851
852 return 0;
853}
854
855static const char * const event_type_descriptors[] = {
856 "Hardware event",
857 "Software event",
858 "Tracepoint event",
859 "Hardware cache event",
860 "Raw hardware event descriptor",
861 "Hardware breakpoint",
862};
863
864
865
866
867
868static void print_tracepoint_events(void)
869{
870 DIR *sys_dir, *evt_dir;
871 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
872 char evt_path[MAXPATHLEN];
873 char dir_path[MAXPATHLEN];
874
875 if (debugfs_valid_mountpoint(debugfs_path))
876 return;
877
878 sys_dir = opendir(debugfs_path);
879 if (!sys_dir)
880 return;
881
882 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
883
884 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
885 sys_dirent.d_name);
886 evt_dir = opendir(dir_path);
887 if (!evt_dir)
888 continue;
889
890 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
891 snprintf(evt_path, MAXPATHLEN, "%s:%s",
892 sys_dirent.d_name, evt_dirent.d_name);
893 printf(" %-42s [%s]\n", evt_path,
894 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
895 }
896 closedir(evt_dir);
897 }
898 closedir(sys_dir);
899}
900
901
902
903
904void print_events(void)
905{
906 struct event_symbol *syms = event_symbols;
907 unsigned int i, type, op, prev_type = -1;
908 char name[40];
909
910 printf("\n");
911 printf("List of pre-defined events (to be used in -e):\n");
912
913 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
914 type = syms->type;
915
916 if (type != prev_type)
917 printf("\n");
918
919 if (strlen(syms->alias))
920 sprintf(name, "%s OR %s", syms->symbol, syms->alias);
921 else
922 strcpy(name, syms->symbol);
923 printf(" %-42s [%s]\n", name,
924 event_type_descriptors[type]);
925
926 prev_type = type;
927 }
928
929 printf("\n");
930 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
931 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
932
933 if (!is_cache_op_valid(type, op))
934 continue;
935
936 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
937 printf(" %-42s [%s]\n",
938 event_cache_name(type, op, i),
939 event_type_descriptors[PERF_TYPE_HW_CACHE]);
940 }
941 }
942 }
943
944 printf("\n");
945 printf(" %-42s [%s]\n",
946 "rNNN (see 'perf list --help' on how to encode it)",
947 event_type_descriptors[PERF_TYPE_RAW]);
948 printf("\n");
949
950 printf(" %-42s [%s]\n",
951 "mem:<addr>[:access]",
952 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
953 printf("\n");
954
955 print_tracepoint_events();
956
957 exit(129);
958}
959
