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fs/ext4/inode.c: use pr_warn_ratelimited()
[linux/fpc-iii.git] / tools / perf / util / parse-events.c
blob5cb6f4bde9055b84c202970cd39b86ce7f144f54
1 #include "../../../include/linux/hw_breakpoint.h"
2 #include "util.h"
3 #include "../perf.h"
4 #include "evsel.h"
5 #include "parse-options.h"
6 #include "parse-events.h"
7 #include "exec_cmd.h"
8 #include "string.h"
9 #include "symbol.h"
10 #include "cache.h"
11 #include "header.h"
12 #include "debugfs.h"
13
14 int nr_counters;
15
16 LIST_HEAD(evsel_list);
17
18 struct event_symbol {
19 u8 type;
20 u64 config;
21 const char *symbol;
22 const char *alias;
23 };
24
25 enum event_result {
26 EVT_FAILED,
27 EVT_HANDLED,
28 EVT_HANDLED_ALL
29 };
30
31 char 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
36 static 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
64 static 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
74 static 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
88 static 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
97 static const char *hw_cache_op[][MAX_ALIASES] = {
98 { "load", "loads", "read", },
99 { "store", "stores", "write", },
100 { "prefetch", "prefetches", "speculative-read", "speculative-load", },
101 };
102
103 static 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 * cache operartion stat
116 * L1I : Read and prefetch only
117 * ITLB and BPU : Read-only
118 */
119 static 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
134 static 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
159 struct 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)
228 static 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
245 static 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; /* valid */
249 else
250 return 0; /* invalid */
251 }
252
253 static 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
269 const char *event_name(struct perf_evsel *evsel)
270 {
271 u64 config = evsel->attr.config;
272 int type = evsel->attr.type;
273
274 return __event_name(type, config);
275 }
276
277 const 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
328 static 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
348 static enum event_result
349 parse_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 * No fallback - if we cannot get a clear cache type
357 * then bail out:
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 * Can't parse this as a cache op or result, so back up
384 * to the '-'.
385 */
386 --s;
387 break;
388 }
389
390 /*
391 * Fall back to reads:
392 */
393 if (cache_op == -1)
394 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
395
396 /*
397 * Fall back to accesses:
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
409 static enum event_result
410 parse_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 += strlen(sys_name) + evt_length + 1; /* + 1 for the ':' */
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 /* sys + ':' + event + ':' + flags*/
450 #define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
451 static enum event_result
452 parse_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 static int store_event_type(const char *orgname)
494 {
495 char filename[PATH_MAX], *c;
496 FILE *file;
497 int id, n;
498
499 sprintf(filename, "%s/", debugfs_path);
500 strncat(filename, orgname, strlen(orgname));
501 strcat(filename, "/id");
502
503 c = strchr(filename, ':');
504 if (c)
505 *c = '/';
506
507 file = fopen(filename, "r");
508 if (!file)
509 return 0;
510 n = fscanf(file, "%i", &id);
511 fclose(file);
512 if (n < 1) {
513 pr_err("cannot store event ID\n");
514 return -EINVAL;
515 }
516 return perf_header__push_event(id, orgname);
517 }
518
519 static enum event_result parse_tracepoint_event(const char **strp,
520 struct perf_event_attr *attr)
521 {
522 const char *evt_name;
523 char *flags = NULL, *comma_loc;
524 char sys_name[MAX_EVENT_LENGTH];
525 unsigned int sys_length, evt_length;
526
527 if (debugfs_valid_mountpoint(debugfs_path))
528 return 0;
529
530 evt_name = strchr(*strp, ':');
531 if (!evt_name)
532 return EVT_FAILED;
533
534 sys_length = evt_name - *strp;
535 if (sys_length >= MAX_EVENT_LENGTH)
536 return 0;
537
538 strncpy(sys_name, *strp, sys_length);
539 sys_name[sys_length] = '\0';
540 evt_name = evt_name + 1;
541
542 comma_loc = strchr(evt_name, ',');
543 if (comma_loc) {
544 /* take the event name up to the comma */
545 evt_name = strndup(evt_name, comma_loc - evt_name);
546 }
547 flags = strchr(evt_name, ':');
548 if (flags) {
549 /* split it out: */
550 evt_name = strndup(evt_name, flags - evt_name);
551 flags++;
552 }
553
554 evt_length = strlen(evt_name);
555 if (evt_length >= MAX_EVENT_LENGTH)
556 return EVT_FAILED;
557 if (strpbrk(evt_name, "*?")) {
558 *strp += strlen(sys_name) + evt_length;
559 return parse_multiple_tracepoint_event(sys_name, evt_name,
560 flags);
561 } else {
562 if (store_event_type(evt_name) < 0)
563 return EVT_FAILED;
564
565 return parse_single_tracepoint_event(sys_name, evt_name,
566 evt_length, attr, strp);
567 }
568 }
569
570 static enum event_result
571 parse_breakpoint_type(const char *type, const char **strp,
572 struct perf_event_attr *attr)
573 {
574 int i;
575
576 for (i = 0; i < 3; i++) {
577 if (!type[i])
578 break;
579
580 switch (type[i]) {
581 case 'r':
582 attr->bp_type |= HW_BREAKPOINT_R;
583 break;
584 case 'w':
585 attr->bp_type |= HW_BREAKPOINT_W;
586 break;
587 case 'x':
588 attr->bp_type |= HW_BREAKPOINT_X;
589 break;
590 default:
591 return EVT_FAILED;
592 }
593 }
594 if (!attr->bp_type) /* Default */
595 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
596
597 *strp = type + i;
598
599 return EVT_HANDLED;
600 }
601
602 static enum event_result
603 parse_breakpoint_event(const char **strp, struct perf_event_attr *attr)
604 {
605 const char *target;
606 const char *type;
607 char *endaddr;
608 u64 addr;
609 enum event_result err;
610
611 target = strchr(*strp, ':');
612 if (!target)
613 return EVT_FAILED;
614
615 if (strncmp(*strp, "mem", target - *strp) != 0)
616 return EVT_FAILED;
617
618 target++;
619
620 addr = strtoull(target, &endaddr, 0);
621 if (target == endaddr)
622 return EVT_FAILED;
623
624 attr->bp_addr = addr;
625 *strp = endaddr;
626
627 type = strchr(target, ':');
628
629 /* If no type is defined, just rw as default */
630 if (!type) {
631 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
632 } else {
633 err = parse_breakpoint_type(++type, strp, attr);
634 if (err == EVT_FAILED)
635 return EVT_FAILED;
636 }
637
638 /*
639 * We should find a nice way to override the access length
640 * Provide some defaults for now
641 */
642 if (attr->bp_type == HW_BREAKPOINT_X)
643 attr->bp_len = sizeof(long);
644 else
645 attr->bp_len = HW_BREAKPOINT_LEN_4;
646
647 attr->type = PERF_TYPE_BREAKPOINT;
648
649 return EVT_HANDLED;
650 }
651
652 static int check_events(const char *str, unsigned int i)
653 {
654 int n;
655
656 n = strlen(event_symbols[i].symbol);
657 if (!strncmp(str, event_symbols[i].symbol, n))
658 return n;
659
660 n = strlen(event_symbols[i].alias);
661 if (n)
662 if (!strncmp(str, event_symbols[i].alias, n))
663 return n;
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 enum event_result
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 while (*str) {
737 if (*str == 'u') {
738 if (!exclude)
739 exclude = eu = ek = eh = 1;
740 eu = 0;
741 } else if (*str == 'k') {
742 if (!exclude)
743 exclude = eu = ek = eh = 1;
744 ek = 0;
745 } else if (*str == 'h') {
746 if (!exclude)
747 exclude = eu = ek = eh = 1;
748 eh = 0;
749 } else if (*str == 'p') {
750 precise++;
751 } else
752 break;
753
754 ++str;
755 }
756 if (str >= *strp + 2) {
757 *strp = str;
758 attr->exclude_user = eu;
759 attr->exclude_kernel = ek;
760 attr->exclude_hv = eh;
761 attr->precise_ip = precise;
762 return 1;
763 }
764 return 0;
765 }
766
767 /*
768 * Each event can have multiple symbolic names.
769 * Symbolic names are (almost) exactly matched.
770 */
771 static enum event_result
772 parse_event_symbols(const char **str, struct perf_event_attr *attr)
773 {
774 enum event_result ret;
775
776 ret = parse_tracepoint_event(str, attr);
777 if (ret != EVT_FAILED)
778 goto modifier;
779
780 ret = parse_raw_event(str, attr);
781 if (ret != EVT_FAILED)
782 goto modifier;
783
784 ret = parse_numeric_event(str, attr);
785 if (ret != EVT_FAILED)
786 goto modifier;
787
788 ret = parse_symbolic_event(str, attr);
789 if (ret != EVT_FAILED)
790 goto modifier;
791
792 ret = parse_generic_hw_event(str, attr);
793 if (ret != EVT_FAILED)
794 goto modifier;
795
796 ret = parse_breakpoint_event(str, attr);
797 if (ret != EVT_FAILED)
798 goto modifier;
799
800 fprintf(stderr, "invalid or unsupported event: '%s'\n", *str);
801 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
802 return EVT_FAILED;
803
804 modifier:
805 parse_event_modifier(str, attr);
806
807 return ret;
808 }
809
810 int parse_events(const struct option *opt __used, const char *str, int unset __used)
811 {
812 struct perf_event_attr attr;
813 enum event_result ret;
814
815 for (;;) {
816 memset(&attr, 0, sizeof(attr));
817 ret = parse_event_symbols(&str, &attr);
818 if (ret == EVT_FAILED)
819 return -1;
820
821 if (!(*str == 0 || *str == ',' || isspace(*str)))
822 return -1;
823
824 if (ret != EVT_HANDLED_ALL) {
825 struct perf_evsel *evsel;
826 evsel = perf_evsel__new(&attr,
827 nr_counters);
828 if (evsel == NULL)
829 return -1;
830 list_add_tail(&evsel->node, &evsel_list);
831 ++nr_counters;
832 }
833
834 if (*str == 0)
835 break;
836 if (*str == ',')
837 ++str;
838 while (isspace(*str))
839 ++str;
840 }
841
842 return 0;
843 }
844
845 int parse_filter(const struct option *opt __used, const char *str,
846 int unset __used)
847 {
848 struct perf_evsel *last = NULL;
849
850 if (!list_empty(&evsel_list))
851 last = list_entry(evsel_list.prev, struct perf_evsel, node);
852
853 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
854 fprintf(stderr,
855 "-F option should follow a -e tracepoint option\n");
856 return -1;
857 }
858
859 last->filter = strdup(str);
860 if (last->filter == NULL) {
861 fprintf(stderr, "not enough memory to hold filter string\n");
862 return -1;
863 }
864
865 return 0;
866 }
867
868 static const char * const event_type_descriptors[] = {
869 "Hardware event",
870 "Software event",
871 "Tracepoint event",
872 "Hardware cache event",
873 "Raw hardware event descriptor",
874 "Hardware breakpoint",
875 };
876
877 /*
878 * Print the events from <debugfs_mount_point>/tracing/events
879 */
880
881 static void print_tracepoint_events(void)
882 {
883 DIR *sys_dir, *evt_dir;
884 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
885 char evt_path[MAXPATHLEN];
886 char dir_path[MAXPATHLEN];
887
888 if (debugfs_valid_mountpoint(debugfs_path))
889 return;
890
891 sys_dir = opendir(debugfs_path);
892 if (!sys_dir)
893 return;
894
895 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
896
897 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
898 sys_dirent.d_name);
899 evt_dir = opendir(dir_path);
900 if (!evt_dir)
901 continue;
902
903 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
904 snprintf(evt_path, MAXPATHLEN, "%s:%s",
905 sys_dirent.d_name, evt_dirent.d_name);
906 printf(" %-42s [%s]\n", evt_path,
907 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
908 }
909 closedir(evt_dir);
910 }
911 closedir(sys_dir);
912 }
913
914 /*
915 * Check whether event is in <debugfs_mount_point>/tracing/events
916 */
917
918 int is_valid_tracepoint(const char *event_string)
919 {
920 DIR *sys_dir, *evt_dir;
921 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
922 char evt_path[MAXPATHLEN];
923 char dir_path[MAXPATHLEN];
924
925 if (debugfs_valid_mountpoint(debugfs_path))
926 return 0;
927
928 sys_dir = opendir(debugfs_path);
929 if (!sys_dir)
930 return 0;
931
932 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
933
934 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
935 sys_dirent.d_name);
936 evt_dir = opendir(dir_path);
937 if (!evt_dir)
938 continue;
939
940 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
941 snprintf(evt_path, MAXPATHLEN, "%s:%s",
942 sys_dirent.d_name, evt_dirent.d_name);
943 if (!strcmp(evt_path, event_string)) {
944 closedir(evt_dir);
945 closedir(sys_dir);
946 return 1;
947 }
948 }
949 closedir(evt_dir);
950 }
951 closedir(sys_dir);
952 return 0;
953 }
954
955 /*
956 * Print the help text for the event symbols:
957 */
958 void print_events(void)
959 {
960 struct event_symbol *syms = event_symbols;
961 unsigned int i, type, op, prev_type = -1;
962 char name[40];
963
964 printf("\n");
965 printf("List of pre-defined events (to be used in -e):\n");
966
967 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
968 type = syms->type;
969
970 if (type != prev_type)
971 printf("\n");
972
973 if (strlen(syms->alias))
974 sprintf(name, "%s OR %s", syms->symbol, syms->alias);
975 else
976 strcpy(name, syms->symbol);
977 printf(" %-42s [%s]\n", name,
978 event_type_descriptors[type]);
979
980 prev_type = type;
981 }
982
983 printf("\n");
984 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
985 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
986 /* skip invalid cache type */
987 if (!is_cache_op_valid(type, op))
988 continue;
989
990 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
991 printf(" %-42s [%s]\n",
992 event_cache_name(type, op, i),
993 event_type_descriptors[PERF_TYPE_HW_CACHE]);
994 }
995 }
996 }
997
998 printf("\n");
999 printf(" %-42s [%s]\n",
1000 "rNNN (see 'perf list --help' on how to encode it)",
1001 event_type_descriptors[PERF_TYPE_RAW]);
1002 printf("\n");
1003
1004 printf(" %-42s [%s]\n",
1005 "mem:<addr>[:access]",
1006 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1007 printf("\n");
1008
1009 print_tracepoint_events();
1010
1011 exit(129);
1012 }
1013
1014 int perf_evsel_list__create_default(void)
1015 {
1016 struct perf_evsel *evsel;
1017 struct perf_event_attr attr;
1018
1019 memset(&attr, 0, sizeof(attr));
1020 attr.type = PERF_TYPE_HARDWARE;
1021 attr.config = PERF_COUNT_HW_CPU_CYCLES;
1022
1023 evsel = perf_evsel__new(&attr, 0);
1024
1025 if (evsel == NULL)
1026 return -ENOMEM;
1027
1028 list_add(&evsel->node, &evsel_list);
1029 ++nr_counters;
1030 return 0;
1031 }
1032
1033 void perf_evsel_list__delete(void)
1034 {
1035 struct perf_evsel *pos, *n;
1036
1037 list_for_each_entry_safe(pos, n, &evsel_list, node) {
1038 list_del_init(&pos->node);
1039 perf_evsel__delete(pos);
1040 }
1041 nr_counters = 0;
1042 }
Linux with added FPC-III support