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usb: gadget: r8a66597-udc: fix cannot connect after rmmod gadget driver
[linux/fpc-iii.git] / tools / perf / util / parse-events.c
blob41982c373faf2a075f9bbba9bedcd62cc402e0b8
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
15 struct event_symbol {
16 u8 type;
17 u64 config;
18 const char *symbol;
19 const char *alias;
20 };
21
22 enum event_result {
23 EVT_FAILED,
24 EVT_HANDLED,
25 EVT_HANDLED_ALL
26 };
27
28 char 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
33 static 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
63 static 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
75 static 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
89 static const char *hw_cache[][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 };
97
98 static const char *hw_cache_op[][MAX_ALIASES] = {
99 { "load", "loads", "read", },
100 { "store", "stores", "write", },
101 { "prefetch", "prefetches", "speculative-read", "speculative-load", },
102 };
103
104 static const char *hw_cache_result[][MAX_ALIASES] = {
105 { "refs", "Reference", "ops", "access", },
106 { "misses", "miss", },
107 };
108
109 #define C(x) PERF_COUNT_HW_CACHE_##x
110 #define CACHE_READ (1 << C(OP_READ))
111 #define CACHE_WRITE (1 << C(OP_WRITE))
112 #define CACHE_PREFETCH (1 << C(OP_PREFETCH))
113 #define COP(x) (1 << x)
114
115 /*
116 * cache operartion stat
117 * L1I : Read and prefetch only
118 * ITLB and BPU : Read-only
119 */
120 static unsigned long hw_cache_stat[C(MAX)] = {
121 [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
122 [C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
123 [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
124 [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
125 [C(ITLB)] = (CACHE_READ),
126 [C(BPU)] = (CACHE_READ),
127 };
128
129 #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
130 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
131 if (sys_dirent.d_type == DT_DIR && \
132 (strcmp(sys_dirent.d_name, ".")) && \
133 (strcmp(sys_dirent.d_name, "..")))
134
135 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
136 {
137 char evt_path[MAXPATHLEN];
138 int fd;
139
140 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
141 sys_dir->d_name, evt_dir->d_name);
142 fd = open(evt_path, O_RDONLY);
143 if (fd < 0)
144 return -EINVAL;
145 close(fd);
146
147 return 0;
148 }
149
150 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
151 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
152 if (evt_dirent.d_type == DT_DIR && \
153 (strcmp(evt_dirent.d_name, ".")) && \
154 (strcmp(evt_dirent.d_name, "..")) && \
155 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
156
157 #define MAX_EVENT_LENGTH 512
158
159
160 struct tracepoint_path *tracepoint_id_to_path(u64 config)
161 {
162 struct tracepoint_path *path = NULL;
163 DIR *sys_dir, *evt_dir;
164 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
165 char id_buf[4];
166 int fd;
167 u64 id;
168 char evt_path[MAXPATHLEN];
169 char dir_path[MAXPATHLEN];
170
171 if (debugfs_valid_mountpoint(debugfs_path))
172 return NULL;
173
174 sys_dir = opendir(debugfs_path);
175 if (!sys_dir)
176 return NULL;
177
178 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
179
180 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
181 sys_dirent.d_name);
182 evt_dir = opendir(dir_path);
183 if (!evt_dir)
184 continue;
185
186 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
187
188 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
189 evt_dirent.d_name);
190 fd = open(evt_path, O_RDONLY);
191 if (fd < 0)
192 continue;
193 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
194 close(fd);
195 continue;
196 }
197 close(fd);
198 id = atoll(id_buf);
199 if (id == config) {
200 closedir(evt_dir);
201 closedir(sys_dir);
202 path = zalloc(sizeof(*path));
203 path->system = malloc(MAX_EVENT_LENGTH);
204 if (!path->system) {
205 free(path);
206 return NULL;
207 }
208 path->name = malloc(MAX_EVENT_LENGTH);
209 if (!path->name) {
210 free(path->system);
211 free(path);
212 return NULL;
213 }
214 strncpy(path->system, sys_dirent.d_name,
215 MAX_EVENT_LENGTH);
216 strncpy(path->name, evt_dirent.d_name,
217 MAX_EVENT_LENGTH);
218 return path;
219 }
220 }
221 closedir(evt_dir);
222 }
223
224 closedir(sys_dir);
225 return NULL;
226 }
227
228 #define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
229 static const char *tracepoint_id_to_name(u64 config)
230 {
231 static char buf[TP_PATH_LEN];
232 struct tracepoint_path *path;
233
234 path = tracepoint_id_to_path(config);
235 if (path) {
236 snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
237 free(path->name);
238 free(path->system);
239 free(path);
240 } else
241 snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
242
243 return buf;
244 }
245
246 static int is_cache_op_valid(u8 cache_type, u8 cache_op)
247 {
248 if (hw_cache_stat[cache_type] & COP(cache_op))
249 return 1; /* valid */
250 else
251 return 0; /* invalid */
252 }
253
254 static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
255 {
256 static char name[50];
257
258 if (cache_result) {
259 sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
260 hw_cache_op[cache_op][0],
261 hw_cache_result[cache_result][0]);
262 } else {
263 sprintf(name, "%s-%s", hw_cache[cache_type][0],
264 hw_cache_op[cache_op][1]);
265 }
266
267 return name;
268 }
269
270 const char *event_type(int type)
271 {
272 switch (type) {
273 case PERF_TYPE_HARDWARE:
274 return "hardware";
275
276 case PERF_TYPE_SOFTWARE:
277 return "software";
278
279 case PERF_TYPE_TRACEPOINT:
280 return "tracepoint";
281
282 case PERF_TYPE_HW_CACHE:
283 return "hardware-cache";
284
285 default:
286 break;
287 }
288
289 return "unknown";
290 }
291
292 const char *event_name(struct perf_evsel *evsel)
293 {
294 u64 config = evsel->attr.config;
295 int type = evsel->attr.type;
296
297 if (evsel->name)
298 return evsel->name;
299
300 return __event_name(type, config);
301 }
302
303 const char *__event_name(int type, u64 config)
304 {
305 static char buf[32];
306
307 if (type == PERF_TYPE_RAW) {
308 sprintf(buf, "raw 0x%" PRIx64, config);
309 return buf;
310 }
311
312 switch (type) {
313 case PERF_TYPE_HARDWARE:
314 if (config < PERF_COUNT_HW_MAX && hw_event_names[config])
315 return hw_event_names[config];
316 return "unknown-hardware";
317
318 case PERF_TYPE_HW_CACHE: {
319 u8 cache_type, cache_op, cache_result;
320
321 cache_type = (config >> 0) & 0xff;
322 if (cache_type > PERF_COUNT_HW_CACHE_MAX)
323 return "unknown-ext-hardware-cache-type";
324
325 cache_op = (config >> 8) & 0xff;
326 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
327 return "unknown-ext-hardware-cache-op";
328
329 cache_result = (config >> 16) & 0xff;
330 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
331 return "unknown-ext-hardware-cache-result";
332
333 if (!is_cache_op_valid(cache_type, cache_op))
334 return "invalid-cache";
335
336 return event_cache_name(cache_type, cache_op, cache_result);
337 }
338
339 case PERF_TYPE_SOFTWARE:
340 if (config < PERF_COUNT_SW_MAX && sw_event_names[config])
341 return sw_event_names[config];
342 return "unknown-software";
343
344 case PERF_TYPE_TRACEPOINT:
345 return tracepoint_id_to_name(config);
346
347 default:
348 break;
349 }
350
351 return "unknown";
352 }
353
354 static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
355 {
356 int i, j;
357 int n, longest = -1;
358
359 for (i = 0; i < size; i++) {
360 for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
361 n = strlen(names[i][j]);
362 if (n > longest && !strncasecmp(*str, names[i][j], n))
363 longest = n;
364 }
365 if (longest > 0) {
366 *str += longest;
367 return i;
368 }
369 }
370
371 return -1;
372 }
373
374 static enum event_result
375 parse_generic_hw_event(const char **str, struct perf_event_attr *attr)
376 {
377 const char *s = *str;
378 int cache_type = -1, cache_op = -1, cache_result = -1;
379
380 cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX);
381 /*
382 * No fallback - if we cannot get a clear cache type
383 * then bail out:
384 */
385 if (cache_type == -1)
386 return EVT_FAILED;
387
388 while ((cache_op == -1 || cache_result == -1) && *s == '-') {
389 ++s;
390
391 if (cache_op == -1) {
392 cache_op = parse_aliases(&s, hw_cache_op,
393 PERF_COUNT_HW_CACHE_OP_MAX);
394 if (cache_op >= 0) {
395 if (!is_cache_op_valid(cache_type, cache_op))
396 return 0;
397 continue;
398 }
399 }
400
401 if (cache_result == -1) {
402 cache_result = parse_aliases(&s, hw_cache_result,
403 PERF_COUNT_HW_CACHE_RESULT_MAX);
404 if (cache_result >= 0)
405 continue;
406 }
407
408 /*
409 * Can't parse this as a cache op or result, so back up
410 * to the '-'.
411 */
412 --s;
413 break;
414 }
415
416 /*
417 * Fall back to reads:
418 */
419 if (cache_op == -1)
420 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
421
422 /*
423 * Fall back to accesses:
424 */
425 if (cache_result == -1)
426 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
427
428 attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
429 attr->type = PERF_TYPE_HW_CACHE;
430
431 *str = s;
432 return EVT_HANDLED;
433 }
434
435 static enum event_result
436 parse_single_tracepoint_event(char *sys_name,
437 const char *evt_name,
438 unsigned int evt_length,
439 struct perf_event_attr *attr,
440 const char **strp)
441 {
442 char evt_path[MAXPATHLEN];
443 char id_buf[4];
444 u64 id;
445 int fd;
446
447 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
448 sys_name, evt_name);
449
450 fd = open(evt_path, O_RDONLY);
451 if (fd < 0)
452 return EVT_FAILED;
453
454 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
455 close(fd);
456 return EVT_FAILED;
457 }
458
459 close(fd);
460 id = atoll(id_buf);
461 attr->config = id;
462 attr->type = PERF_TYPE_TRACEPOINT;
463 *strp += strlen(sys_name) + evt_length + 1; /* + 1 for the ':' */
464
465 attr->sample_type |= PERF_SAMPLE_RAW;
466 attr->sample_type |= PERF_SAMPLE_TIME;
467 attr->sample_type |= PERF_SAMPLE_CPU;
468
469 attr->sample_period = 1;
470
471
472 return EVT_HANDLED;
473 }
474
475 /* sys + ':' + event + ':' + flags*/
476 #define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
477 static enum event_result
478 parse_multiple_tracepoint_event(const struct option *opt, char *sys_name,
479 const char *evt_exp, char *flags)
480 {
481 char evt_path[MAXPATHLEN];
482 struct dirent *evt_ent;
483 DIR *evt_dir;
484
485 snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name);
486 evt_dir = opendir(evt_path);
487
488 if (!evt_dir) {
489 perror("Can't open event dir");
490 return EVT_FAILED;
491 }
492
493 while ((evt_ent = readdir(evt_dir))) {
494 char event_opt[MAX_EVOPT_LEN + 1];
495 int len;
496
497 if (!strcmp(evt_ent->d_name, ".")
498 || !strcmp(evt_ent->d_name, "..")
499 || !strcmp(evt_ent->d_name, "enable")
500 || !strcmp(evt_ent->d_name, "filter"))
501 continue;
502
503 if (!strglobmatch(evt_ent->d_name, evt_exp))
504 continue;
505
506 len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
507 evt_ent->d_name, flags ? ":" : "",
508 flags ?: "");
509 if (len < 0)
510 return EVT_FAILED;
511
512 if (parse_events(opt, event_opt, 0))
513 return EVT_FAILED;
514 }
515
516 return EVT_HANDLED_ALL;
517 }
518
519 static enum event_result
520 parse_tracepoint_event(const struct option *opt, const char **strp,
521 struct perf_event_attr *attr)
522 {
523 const char *evt_name;
524 char *flags = NULL, *comma_loc;
525 char sys_name[MAX_EVENT_LENGTH];
526 unsigned int sys_length, evt_length;
527
528 if (debugfs_valid_mountpoint(debugfs_path))
529 return 0;
530
531 evt_name = strchr(*strp, ':');
532 if (!evt_name)
533 return EVT_FAILED;
534
535 sys_length = evt_name - *strp;
536 if (sys_length >= MAX_EVENT_LENGTH)
537 return 0;
538
539 strncpy(sys_name, *strp, sys_length);
540 sys_name[sys_length] = '\0';
541 evt_name = evt_name + 1;
542
543 comma_loc = strchr(evt_name, ',');
544 if (comma_loc) {
545 /* take the event name up to the comma */
546 evt_name = strndup(evt_name, comma_loc - evt_name);
547 }
548 flags = strchr(evt_name, ':');
549 if (flags) {
550 /* split it out: */
551 evt_name = strndup(evt_name, flags - evt_name);
552 flags++;
553 }
554
555 evt_length = strlen(evt_name);
556 if (evt_length >= MAX_EVENT_LENGTH)
557 return EVT_FAILED;
558 if (strpbrk(evt_name, "*?")) {
559 *strp += strlen(sys_name) + evt_length + 1; /* 1 == the ':' */
560 return parse_multiple_tracepoint_event(opt, sys_name, evt_name,
561 flags);
562 } else {
563 return parse_single_tracepoint_event(sys_name, evt_name,
564 evt_length, attr, strp);
565 }
566 }
567
568 static enum event_result
569 parse_breakpoint_type(const char *type, const char **strp,
570 struct perf_event_attr *attr)
571 {
572 int i;
573
574 for (i = 0; i < 3; i++) {
575 if (!type[i])
576 break;
577
578 switch (type[i]) {
579 case 'r':
580 attr->bp_type |= HW_BREAKPOINT_R;
581 break;
582 case 'w':
583 attr->bp_type |= HW_BREAKPOINT_W;
584 break;
585 case 'x':
586 attr->bp_type |= HW_BREAKPOINT_X;
587 break;
588 default:
589 return EVT_FAILED;
590 }
591 }
592 if (!attr->bp_type) /* Default */
593 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
594
595 *strp = type + i;
596
597 return EVT_HANDLED;
598 }
599
600 static enum event_result
601 parse_breakpoint_event(const char **strp, struct perf_event_attr *attr)
602 {
603 const char *target;
604 const char *type;
605 char *endaddr;
606 u64 addr;
607 enum event_result err;
608
609 target = strchr(*strp, ':');
610 if (!target)
611 return EVT_FAILED;
612
613 if (strncmp(*strp, "mem", target - *strp) != 0)
614 return EVT_FAILED;
615
616 target++;
617
618 addr = strtoull(target, &endaddr, 0);
619 if (target == endaddr)
620 return EVT_FAILED;
621
622 attr->bp_addr = addr;
623 *strp = endaddr;
624
625 type = strchr(target, ':');
626
627 /* If no type is defined, just rw as default */
628 if (!type) {
629 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
630 } else {
631 err = parse_breakpoint_type(++type, strp, attr);
632 if (err == EVT_FAILED)
633 return EVT_FAILED;
634 }
635
636 /*
637 * We should find a nice way to override the access length
638 * Provide some defaults for now
639 */
640 if (attr->bp_type == HW_BREAKPOINT_X)
641 attr->bp_len = sizeof(long);
642 else
643 attr->bp_len = HW_BREAKPOINT_LEN_4;
644
645 attr->type = PERF_TYPE_BREAKPOINT;
646
647 return EVT_HANDLED;
648 }
649
650 static int check_events(const char *str, unsigned int i)
651 {
652 int n;
653
654 n = strlen(event_symbols[i].symbol);
655 if (!strncasecmp(str, event_symbols[i].symbol, n))
656 return n;
657
658 n = strlen(event_symbols[i].alias);
659 if (n) {
660 if (!strncasecmp(str, event_symbols[i].alias, n))
661 return n;
662 }
663
664 return 0;
665 }
666
667 static enum event_result
668 parse_symbolic_event(const char **strp, struct perf_event_attr *attr)
669 {
670 const char *str = *strp;
671 unsigned int i;
672 int n;
673
674 for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
675 n = check_events(str, i);
676 if (n > 0) {
677 attr->type = event_symbols[i].type;
678 attr->config = event_symbols[i].config;
679 *strp = str + n;
680 return EVT_HANDLED;
681 }
682 }
683 return EVT_FAILED;
684 }
685
686 static enum event_result
687 parse_raw_event(const char **strp, struct perf_event_attr *attr)
688 {
689 const char *str = *strp;
690 u64 config;
691 int n;
692
693 if (*str != 'r')
694 return EVT_FAILED;
695 n = hex2u64(str + 1, &config);
696 if (n > 0) {
697 *strp = str + n + 1;
698 attr->type = PERF_TYPE_RAW;
699 attr->config = config;
700 return EVT_HANDLED;
701 }
702 return EVT_FAILED;
703 }
704
705 static enum event_result
706 parse_numeric_event(const char **strp, struct perf_event_attr *attr)
707 {
708 const char *str = *strp;
709 char *endp;
710 unsigned long type;
711 u64 config;
712
713 type = strtoul(str, &endp, 0);
714 if (endp > str && type < PERF_TYPE_MAX && *endp == ':') {
715 str = endp + 1;
716 config = strtoul(str, &endp, 0);
717 if (endp > str) {
718 attr->type = type;
719 attr->config = config;
720 *strp = endp;
721 return EVT_HANDLED;
722 }
723 }
724 return EVT_FAILED;
725 }
726
727 static int
728 parse_event_modifier(const char **strp, struct perf_event_attr *attr)
729 {
730 const char *str = *strp;
731 int exclude = 0;
732 int eu = 0, ek = 0, eh = 0, precise = 0;
733
734 if (!*str)
735 return 0;
736
737 if (*str == ',')
738 return 0;
739
740 if (*str++ != ':')
741 return -1;
742
743 while (*str) {
744 if (*str == 'u') {
745 if (!exclude)
746 exclude = eu = ek = eh = 1;
747 eu = 0;
748 } else if (*str == 'k') {
749 if (!exclude)
750 exclude = eu = ek = eh = 1;
751 ek = 0;
752 } else if (*str == 'h') {
753 if (!exclude)
754 exclude = eu = ek = eh = 1;
755 eh = 0;
756 } else if (*str == 'p') {
757 precise++;
758 } else
759 break;
760
761 ++str;
762 }
763 if (str < *strp + 2)
764 return -1;
765
766 *strp = str;
767
768 attr->exclude_user = eu;
769 attr->exclude_kernel = ek;
770 attr->exclude_hv = eh;
771 attr->precise_ip = precise;
772
773 return 0;
774 }
775
776 /*
777 * Each event can have multiple symbolic names.
778 * Symbolic names are (almost) exactly matched.
779 */
780 static enum event_result
781 parse_event_symbols(const struct option *opt, const char **str,
782 struct perf_event_attr *attr)
783 {
784 enum event_result ret;
785
786 ret = parse_tracepoint_event(opt, str, attr);
787 if (ret != EVT_FAILED)
788 goto modifier;
789
790 ret = parse_raw_event(str, attr);
791 if (ret != EVT_FAILED)
792 goto modifier;
793
794 ret = parse_numeric_event(str, attr);
795 if (ret != EVT_FAILED)
796 goto modifier;
797
798 ret = parse_symbolic_event(str, attr);
799 if (ret != EVT_FAILED)
800 goto modifier;
801
802 ret = parse_generic_hw_event(str, attr);
803 if (ret != EVT_FAILED)
804 goto modifier;
805
806 ret = parse_breakpoint_event(str, attr);
807 if (ret != EVT_FAILED)
808 goto modifier;
809
810 fprintf(stderr, "invalid or unsupported event: '%s'\n", *str);
811 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
812 return EVT_FAILED;
813
814 modifier:
815 if (parse_event_modifier(str, attr) < 0) {
816 fprintf(stderr, "invalid event modifier: '%s'\n", *str);
817 fprintf(stderr, "Run 'perf list' for a list of valid events and modifiers\n");
818
819 return EVT_FAILED;
820 }
821
822 return ret;
823 }
824
825 int parse_events(const struct option *opt, const char *str, int unset __used)
826 {
827 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
828 struct perf_event_attr attr;
829 enum event_result ret;
830 const char *ostr;
831
832 for (;;) {
833 ostr = str;
834 memset(&attr, 0, sizeof(attr));
835 ret = parse_event_symbols(opt, &str, &attr);
836 if (ret == EVT_FAILED)
837 return -1;
838
839 if (!(*str == 0 || *str == ',' || isspace(*str)))
840 return -1;
841
842 if (ret != EVT_HANDLED_ALL) {
843 struct perf_evsel *evsel;
844 evsel = perf_evsel__new(&attr, evlist->nr_entries);
845 if (evsel == NULL)
846 return -1;
847 perf_evlist__add(evlist, evsel);
848
849 evsel->name = calloc(str - ostr + 1, 1);
850 if (!evsel->name)
851 return -1;
852 strncpy(evsel->name, ostr, str - ostr);
853 }
854
855 if (*str == 0)
856 break;
857 if (*str == ',')
858 ++str;
859 while (isspace(*str))
860 ++str;
861 }
862
863 return 0;
864 }
865
866 int parse_filter(const struct option *opt, const char *str,
867 int unset __used)
868 {
869 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
870 struct perf_evsel *last = NULL;
871
872 if (evlist->nr_entries > 0)
873 last = list_entry(evlist->entries.prev, struct perf_evsel, node);
874
875 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
876 fprintf(stderr,
877 "-F option should follow a -e tracepoint option\n");
878 return -1;
879 }
880
881 last->filter = strdup(str);
882 if (last->filter == NULL) {
883 fprintf(stderr, "not enough memory to hold filter string\n");
884 return -1;
885 }
886
887 return 0;
888 }
889
890 static const char * const event_type_descriptors[] = {
891 "Hardware event",
892 "Software event",
893 "Tracepoint event",
894 "Hardware cache event",
895 "Raw hardware event descriptor",
896 "Hardware breakpoint",
897 };
898
899 /*
900 * Print the events from <debugfs_mount_point>/tracing/events
901 */
902
903 void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
904 {
905 DIR *sys_dir, *evt_dir;
906 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
907 char evt_path[MAXPATHLEN];
908 char dir_path[MAXPATHLEN];
909
910 if (debugfs_valid_mountpoint(debugfs_path))
911 return;
912
913 sys_dir = opendir(debugfs_path);
914 if (!sys_dir)
915 return;
916
917 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
918 if (subsys_glob != NULL &&
919 !strglobmatch(sys_dirent.d_name, subsys_glob))
920 continue;
921
922 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
923 sys_dirent.d_name);
924 evt_dir = opendir(dir_path);
925 if (!evt_dir)
926 continue;
927
928 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
929 if (event_glob != NULL &&
930 !strglobmatch(evt_dirent.d_name, event_glob))
931 continue;
932
933 snprintf(evt_path, MAXPATHLEN, "%s:%s",
934 sys_dirent.d_name, evt_dirent.d_name);
935 printf(" %-50s [%s]\n", evt_path,
936 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
937 }
938 closedir(evt_dir);
939 }
940 closedir(sys_dir);
941 }
942
943 /*
944 * Check whether event is in <debugfs_mount_point>/tracing/events
945 */
946
947 int is_valid_tracepoint(const char *event_string)
948 {
949 DIR *sys_dir, *evt_dir;
950 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
951 char evt_path[MAXPATHLEN];
952 char dir_path[MAXPATHLEN];
953
954 if (debugfs_valid_mountpoint(debugfs_path))
955 return 0;
956
957 sys_dir = opendir(debugfs_path);
958 if (!sys_dir)
959 return 0;
960
961 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
962
963 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
964 sys_dirent.d_name);
965 evt_dir = opendir(dir_path);
966 if (!evt_dir)
967 continue;
968
969 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
970 snprintf(evt_path, MAXPATHLEN, "%s:%s",
971 sys_dirent.d_name, evt_dirent.d_name);
972 if (!strcmp(evt_path, event_string)) {
973 closedir(evt_dir);
974 closedir(sys_dir);
975 return 1;
976 }
977 }
978 closedir(evt_dir);
979 }
980 closedir(sys_dir);
981 return 0;
982 }
983
984 void print_events_type(u8 type)
985 {
986 struct event_symbol *syms = event_symbols;
987 unsigned int i;
988 char name[64];
989
990 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
991 if (type != syms->type)
992 continue;
993
994 if (strlen(syms->alias))
995 snprintf(name, sizeof(name), "%s OR %s",
996 syms->symbol, syms->alias);
997 else
998 snprintf(name, sizeof(name), "%s", syms->symbol);
999
1000 printf(" %-50s [%s]\n", name,
1001 event_type_descriptors[type]);
1002 }
1003 }
1004
1005 int print_hwcache_events(const char *event_glob)
1006 {
1007 unsigned int type, op, i, printed = 0;
1008
1009 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1010 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1011 /* skip invalid cache type */
1012 if (!is_cache_op_valid(type, op))
1013 continue;
1014
1015 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1016 char *name = event_cache_name(type, op, i);
1017
1018 if (event_glob != NULL && !strglobmatch(name, event_glob))
1019 continue;
1020
1021 printf(" %-50s [%s]\n", name,
1022 event_type_descriptors[PERF_TYPE_HW_CACHE]);
1023 ++printed;
1024 }
1025 }
1026 }
1027
1028 return printed;
1029 }
1030
1031 #define MAX_NAME_LEN 100
1032
1033 /*
1034 * Print the help text for the event symbols:
1035 */
1036 void print_events(const char *event_glob)
1037 {
1038 unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
1039 struct event_symbol *syms = event_symbols;
1040 char name[MAX_NAME_LEN];
1041
1042 printf("\n");
1043 printf("List of pre-defined events (to be used in -e):\n");
1044
1045 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
1046 type = syms->type;
1047
1048 if (type != prev_type && printed) {
1049 printf("\n");
1050 printed = 0;
1051 ntypes_printed++;
1052 }
1053
1054 if (event_glob != NULL &&
1055 !(strglobmatch(syms->symbol, event_glob) ||
1056 (syms->alias && strglobmatch(syms->alias, event_glob))))
1057 continue;
1058
1059 if (strlen(syms->alias))
1060 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1061 else
1062 strncpy(name, syms->symbol, MAX_NAME_LEN);
1063 printf(" %-50s [%s]\n", name,
1064 event_type_descriptors[type]);
1065
1066 prev_type = type;
1067 ++printed;
1068 }
1069
1070 if (ntypes_printed) {
1071 printed = 0;
1072 printf("\n");
1073 }
1074 print_hwcache_events(event_glob);
1075
1076 if (event_glob != NULL)
1077 return;
1078
1079 printf("\n");
1080 printf(" %-50s [%s]\n",
1081 "rNNN (see 'perf list --help' on how to encode it)",
1082 event_type_descriptors[PERF_TYPE_RAW]);
1083 printf("\n");
1084
1085 printf(" %-50s [%s]\n",
1086 "mem:<addr>[:access]",
1087 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1088 printf("\n");
1089
1090 print_tracepoint_events(NULL, NULL);
1091
1092 exit(129);
1093 }
Linux with added FPC-III support