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6pack,mkiss: fix lock inconsistency
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / tools / perf / util / parse-events.c
blob952b4ae3d954f36c2a85ec9db2d4908e44a91188
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(INSTRUCTIONS), "instructions", "" },
36 { CHW(CACHE_REFERENCES), "cache-references", "" },
37 { CHW(CACHE_MISSES), "cache-misses", "" },
38 { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
39 { CHW(BRANCH_MISSES), "branch-misses", "" },
40 { CHW(BUS_CYCLES), "bus-cycles", "" },
41
42 { CSW(CPU_CLOCK), "cpu-clock", "" },
43 { CSW(TASK_CLOCK), "task-clock", "" },
44 { CSW(PAGE_FAULTS), "page-faults", "faults" },
45 { CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
46 { CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
47 { CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
48 { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
49 { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
50 { CSW(EMULATION_FAULTS), "emulation-faults", "" },
51 };
52
53 #define __PERF_EVENT_FIELD(config, name) \
54 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
55
56 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
57 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
58 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
59 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
60
61 static const char *hw_event_names[] = {
62 "cycles",
63 "instructions",
64 "cache-references",
65 "cache-misses",
66 "branches",
67 "branch-misses",
68 "bus-cycles",
69 };
70
71 static const char *sw_event_names[] = {
72 "cpu-clock-msecs",
73 "task-clock-msecs",
74 "page-faults",
75 "context-switches",
76 "CPU-migrations",
77 "minor-faults",
78 "major-faults",
79 "alignment-faults",
80 "emulation-faults",
81 };
82
83 #define MAX_ALIASES 8
84
85 static const char *hw_cache[][MAX_ALIASES] = {
86 { "L1-dcache", "l1-d", "l1d", "L1-data", },
87 { "L1-icache", "l1-i", "l1i", "L1-instruction", },
88 { "LLC", "L2" },
89 { "dTLB", "d-tlb", "Data-TLB", },
90 { "iTLB", "i-tlb", "Instruction-TLB", },
91 { "branch", "branches", "bpu", "btb", "bpc", },
92 };
93
94 static const char *hw_cache_op[][MAX_ALIASES] = {
95 { "load", "loads", "read", },
96 { "store", "stores", "write", },
97 { "prefetch", "prefetches", "speculative-read", "speculative-load", },
98 };
99
100 static const char *hw_cache_result[][MAX_ALIASES] = {
101 { "refs", "Reference", "ops", "access", },
102 { "misses", "miss", },
103 };
104
105 #define C(x) PERF_COUNT_HW_CACHE_##x
106 #define CACHE_READ (1 << C(OP_READ))
107 #define CACHE_WRITE (1 << C(OP_WRITE))
108 #define CACHE_PREFETCH (1 << C(OP_PREFETCH))
109 #define COP(x) (1 << x)
110
111 /*
112 * cache operartion stat
113 * L1I : Read and prefetch only
114 * ITLB and BPU : Read-only
115 */
116 static unsigned long hw_cache_stat[C(MAX)] = {
117 [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
118 [C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
119 [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
120 [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
121 [C(ITLB)] = (CACHE_READ),
122 [C(BPU)] = (CACHE_READ),
123 };
124
125 #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
126 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
127 if (sys_dirent.d_type == DT_DIR && \
128 (strcmp(sys_dirent.d_name, ".")) && \
129 (strcmp(sys_dirent.d_name, "..")))
130
131 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
132 {
133 char evt_path[MAXPATHLEN];
134 int fd;
135
136 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
137 sys_dir->d_name, evt_dir->d_name);
138 fd = open(evt_path, O_RDONLY);
139 if (fd < 0)
140 return -EINVAL;
141 close(fd);
142
143 return 0;
144 }
145
146 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
147 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
148 if (evt_dirent.d_type == DT_DIR && \
149 (strcmp(evt_dirent.d_name, ".")) && \
150 (strcmp(evt_dirent.d_name, "..")) && \
151 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
152
153 #define MAX_EVENT_LENGTH 512
154
155
156 struct tracepoint_path *tracepoint_id_to_path(u64 config)
157 {
158 struct tracepoint_path *path = NULL;
159 DIR *sys_dir, *evt_dir;
160 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
161 char id_buf[4];
162 int fd;
163 u64 id;
164 char evt_path[MAXPATHLEN];
165 char dir_path[MAXPATHLEN];
166
167 if (debugfs_valid_mountpoint(debugfs_path))
168 return NULL;
169
170 sys_dir = opendir(debugfs_path);
171 if (!sys_dir)
172 return NULL;
173
174 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
175
176 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
177 sys_dirent.d_name);
178 evt_dir = opendir(dir_path);
179 if (!evt_dir)
180 continue;
181
182 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
183
184 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
185 evt_dirent.d_name);
186 fd = open(evt_path, O_RDONLY);
187 if (fd < 0)
188 continue;
189 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
190 close(fd);
191 continue;
192 }
193 close(fd);
194 id = atoll(id_buf);
195 if (id == config) {
196 closedir(evt_dir);
197 closedir(sys_dir);
198 path = zalloc(sizeof(*path));
199 path->system = malloc(MAX_EVENT_LENGTH);
200 if (!path->system) {
201 free(path);
202 return NULL;
203 }
204 path->name = malloc(MAX_EVENT_LENGTH);
205 if (!path->name) {
206 free(path->system);
207 free(path);
208 return NULL;
209 }
210 strncpy(path->system, sys_dirent.d_name,
211 MAX_EVENT_LENGTH);
212 strncpy(path->name, evt_dirent.d_name,
213 MAX_EVENT_LENGTH);
214 return path;
215 }
216 }
217 closedir(evt_dir);
218 }
219
220 closedir(sys_dir);
221 return NULL;
222 }
223
224 #define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
225 static const char *tracepoint_id_to_name(u64 config)
226 {
227 static char buf[TP_PATH_LEN];
228 struct tracepoint_path *path;
229
230 path = tracepoint_id_to_path(config);
231 if (path) {
232 snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
233 free(path->name);
234 free(path->system);
235 free(path);
236 } else
237 snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
238
239 return buf;
240 }
241
242 static int is_cache_op_valid(u8 cache_type, u8 cache_op)
243 {
244 if (hw_cache_stat[cache_type] & COP(cache_op))
245 return 1; /* valid */
246 else
247 return 0; /* invalid */
248 }
249
250 static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
251 {
252 static char name[50];
253
254 if (cache_result) {
255 sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
256 hw_cache_op[cache_op][0],
257 hw_cache_result[cache_result][0]);
258 } else {
259 sprintf(name, "%s-%s", hw_cache[cache_type][0],
260 hw_cache_op[cache_op][1]);
261 }
262
263 return name;
264 }
265
266 const char *event_type(int type)
267 {
268 switch (type) {
269 case PERF_TYPE_HARDWARE:
270 return "hardware";
271
272 case PERF_TYPE_SOFTWARE:
273 return "software";
274
275 case PERF_TYPE_TRACEPOINT:
276 return "tracepoint";
277
278 case PERF_TYPE_HW_CACHE:
279 return "hardware-cache";
280
281 default:
282 break;
283 }
284
285 return "unknown";
286 }
287
288 const char *event_name(struct perf_evsel *evsel)
289 {
290 u64 config = evsel->attr.config;
291 int type = evsel->attr.type;
292
293 if (evsel->name)
294 return evsel->name;
295
296 return __event_name(type, config);
297 }
298
299 const char *__event_name(int type, u64 config)
300 {
301 static char buf[32];
302
303 if (type == PERF_TYPE_RAW) {
304 sprintf(buf, "raw 0x%" PRIx64, config);
305 return buf;
306 }
307
308 switch (type) {
309 case PERF_TYPE_HARDWARE:
310 if (config < PERF_COUNT_HW_MAX)
311 return hw_event_names[config];
312 return "unknown-hardware";
313
314 case PERF_TYPE_HW_CACHE: {
315 u8 cache_type, cache_op, cache_result;
316
317 cache_type = (config >> 0) & 0xff;
318 if (cache_type > PERF_COUNT_HW_CACHE_MAX)
319 return "unknown-ext-hardware-cache-type";
320
321 cache_op = (config >> 8) & 0xff;
322 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
323 return "unknown-ext-hardware-cache-op";
324
325 cache_result = (config >> 16) & 0xff;
326 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
327 return "unknown-ext-hardware-cache-result";
328
329 if (!is_cache_op_valid(cache_type, cache_op))
330 return "invalid-cache";
331
332 return event_cache_name(cache_type, cache_op, cache_result);
333 }
334
335 case PERF_TYPE_SOFTWARE:
336 if (config < PERF_COUNT_SW_MAX)
337 return sw_event_names[config];
338 return "unknown-software";
339
340 case PERF_TYPE_TRACEPOINT:
341 return tracepoint_id_to_name(config);
342
343 default:
344 break;
345 }
346
347 return "unknown";
348 }
349
350 static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
351 {
352 int i, j;
353 int n, longest = -1;
354
355 for (i = 0; i < size; i++) {
356 for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
357 n = strlen(names[i][j]);
358 if (n > longest && !strncasecmp(*str, names[i][j], n))
359 longest = n;
360 }
361 if (longest > 0) {
362 *str += longest;
363 return i;
364 }
365 }
366
367 return -1;
368 }
369
370 static enum event_result
371 parse_generic_hw_event(const char **str, struct perf_event_attr *attr)
372 {
373 const char *s = *str;
374 int cache_type = -1, cache_op = -1, cache_result = -1;
375
376 cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX);
377 /*
378 * No fallback - if we cannot get a clear cache type
379 * then bail out:
380 */
381 if (cache_type == -1)
382 return EVT_FAILED;
383
384 while ((cache_op == -1 || cache_result == -1) && *s == '-') {
385 ++s;
386
387 if (cache_op == -1) {
388 cache_op = parse_aliases(&s, hw_cache_op,
389 PERF_COUNT_HW_CACHE_OP_MAX);
390 if (cache_op >= 0) {
391 if (!is_cache_op_valid(cache_type, cache_op))
392 return 0;
393 continue;
394 }
395 }
396
397 if (cache_result == -1) {
398 cache_result = parse_aliases(&s, hw_cache_result,
399 PERF_COUNT_HW_CACHE_RESULT_MAX);
400 if (cache_result >= 0)
401 continue;
402 }
403
404 /*
405 * Can't parse this as a cache op or result, so back up
406 * to the '-'.
407 */
408 --s;
409 break;
410 }
411
412 /*
413 * Fall back to reads:
414 */
415 if (cache_op == -1)
416 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
417
418 /*
419 * Fall back to accesses:
420 */
421 if (cache_result == -1)
422 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
423
424 attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
425 attr->type = PERF_TYPE_HW_CACHE;
426
427 *str = s;
428 return EVT_HANDLED;
429 }
430
431 static enum event_result
432 parse_single_tracepoint_event(char *sys_name,
433 const char *evt_name,
434 unsigned int evt_length,
435 struct perf_event_attr *attr,
436 const char **strp)
437 {
438 char evt_path[MAXPATHLEN];
439 char id_buf[4];
440 u64 id;
441 int fd;
442
443 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
444 sys_name, evt_name);
445
446 fd = open(evt_path, O_RDONLY);
447 if (fd < 0)
448 return EVT_FAILED;
449
450 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
451 close(fd);
452 return EVT_FAILED;
453 }
454
455 close(fd);
456 id = atoll(id_buf);
457 attr->config = id;
458 attr->type = PERF_TYPE_TRACEPOINT;
459 *strp += strlen(sys_name) + evt_length + 1; /* + 1 for the ':' */
460
461 attr->sample_type |= PERF_SAMPLE_RAW;
462 attr->sample_type |= PERF_SAMPLE_TIME;
463 attr->sample_type |= PERF_SAMPLE_CPU;
464
465 attr->sample_period = 1;
466
467
468 return EVT_HANDLED;
469 }
470
471 /* sys + ':' + event + ':' + flags*/
472 #define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
473 static enum event_result
474 parse_multiple_tracepoint_event(const struct option *opt, char *sys_name,
475 const char *evt_exp, char *flags)
476 {
477 char evt_path[MAXPATHLEN];
478 struct dirent *evt_ent;
479 DIR *evt_dir;
480
481 snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name);
482 evt_dir = opendir(evt_path);
483
484 if (!evt_dir) {
485 perror("Can't open event dir");
486 return EVT_FAILED;
487 }
488
489 while ((evt_ent = readdir(evt_dir))) {
490 char event_opt[MAX_EVOPT_LEN + 1];
491 int len;
492
493 if (!strcmp(evt_ent->d_name, ".")
494 || !strcmp(evt_ent->d_name, "..")
495 || !strcmp(evt_ent->d_name, "enable")
496 || !strcmp(evt_ent->d_name, "filter"))
497 continue;
498
499 if (!strglobmatch(evt_ent->d_name, evt_exp))
500 continue;
501
502 len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
503 evt_ent->d_name, flags ? ":" : "",
504 flags ?: "");
505 if (len < 0)
506 return EVT_FAILED;
507
508 if (parse_events(opt, event_opt, 0))
509 return EVT_FAILED;
510 }
511
512 return EVT_HANDLED_ALL;
513 }
514
515 static enum event_result
516 parse_tracepoint_event(const struct option *opt, const char **strp,
517 struct perf_event_attr *attr)
518 {
519 const char *evt_name;
520 char *flags = NULL, *comma_loc;
521 char sys_name[MAX_EVENT_LENGTH];
522 unsigned int sys_length, evt_length;
523
524 if (debugfs_valid_mountpoint(debugfs_path))
525 return 0;
526
527 evt_name = strchr(*strp, ':');
528 if (!evt_name)
529 return EVT_FAILED;
530
531 sys_length = evt_name - *strp;
532 if (sys_length >= MAX_EVENT_LENGTH)
533 return 0;
534
535 strncpy(sys_name, *strp, sys_length);
536 sys_name[sys_length] = '\0';
537 evt_name = evt_name + 1;
538
539 comma_loc = strchr(evt_name, ',');
540 if (comma_loc) {
541 /* take the event name up to the comma */
542 evt_name = strndup(evt_name, comma_loc - evt_name);
543 }
544 flags = strchr(evt_name, ':');
545 if (flags) {
546 /* split it out: */
547 evt_name = strndup(evt_name, flags - evt_name);
548 flags++;
549 }
550
551 evt_length = strlen(evt_name);
552 if (evt_length >= MAX_EVENT_LENGTH)
553 return EVT_FAILED;
554 if (strpbrk(evt_name, "*?")) {
555 *strp += strlen(sys_name) + evt_length + 1; /* 1 == the ':' */
556 return parse_multiple_tracepoint_event(opt, sys_name, evt_name,
557 flags);
558 } else {
559 return parse_single_tracepoint_event(sys_name, evt_name,
560 evt_length, attr, strp);
561 }
562 }
563
564 static enum event_result
565 parse_breakpoint_type(const char *type, const char **strp,
566 struct perf_event_attr *attr)
567 {
568 int i;
569
570 for (i = 0; i < 3; i++) {
571 if (!type[i])
572 break;
573
574 switch (type[i]) {
575 case 'r':
576 attr->bp_type |= HW_BREAKPOINT_R;
577 break;
578 case 'w':
579 attr->bp_type |= HW_BREAKPOINT_W;
580 break;
581 case 'x':
582 attr->bp_type |= HW_BREAKPOINT_X;
583 break;
584 default:
585 return EVT_FAILED;
586 }
587 }
588 if (!attr->bp_type) /* Default */
589 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
590
591 *strp = type + i;
592
593 return EVT_HANDLED;
594 }
595
596 static enum event_result
597 parse_breakpoint_event(const char **strp, struct perf_event_attr *attr)
598 {
599 const char *target;
600 const char *type;
601 char *endaddr;
602 u64 addr;
603 enum event_result err;
604
605 target = strchr(*strp, ':');
606 if (!target)
607 return EVT_FAILED;
608
609 if (strncmp(*strp, "mem", target - *strp) != 0)
610 return EVT_FAILED;
611
612 target++;
613
614 addr = strtoull(target, &endaddr, 0);
615 if (target == endaddr)
616 return EVT_FAILED;
617
618 attr->bp_addr = addr;
619 *strp = endaddr;
620
621 type = strchr(target, ':');
622
623 /* If no type is defined, just rw as default */
624 if (!type) {
625 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
626 } else {
627 err = parse_breakpoint_type(++type, strp, attr);
628 if (err == EVT_FAILED)
629 return EVT_FAILED;
630 }
631
632 /*
633 * We should find a nice way to override the access length
634 * Provide some defaults for now
635 */
636 if (attr->bp_type == HW_BREAKPOINT_X)
637 attr->bp_len = sizeof(long);
638 else
639 attr->bp_len = HW_BREAKPOINT_LEN_4;
640
641 attr->type = PERF_TYPE_BREAKPOINT;
642
643 return EVT_HANDLED;
644 }
645
646 static int check_events(const char *str, unsigned int i)
647 {
648 int n;
649
650 n = strlen(event_symbols[i].symbol);
651 if (!strncmp(str, event_symbols[i].symbol, n))
652 return n;
653
654 n = strlen(event_symbols[i].alias);
655 if (n)
656 if (!strncmp(str, event_symbols[i].alias, n))
657 return n;
658 return 0;
659 }
660
661 static enum event_result
662 parse_symbolic_event(const char **strp, struct perf_event_attr *attr)
663 {
664 const char *str = *strp;
665 unsigned int i;
666 int n;
667
668 for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
669 n = check_events(str, i);
670 if (n > 0) {
671 attr->type = event_symbols[i].type;
672 attr->config = event_symbols[i].config;
673 *strp = str + n;
674 return EVT_HANDLED;
675 }
676 }
677 return EVT_FAILED;
678 }
679
680 static enum event_result
681 parse_raw_event(const char **strp, struct perf_event_attr *attr)
682 {
683 const char *str = *strp;
684 u64 config;
685 int n;
686
687 if (*str != 'r')
688 return EVT_FAILED;
689 n = hex2u64(str + 1, &config);
690 if (n > 0) {
691 *strp = str + n + 1;
692 attr->type = PERF_TYPE_RAW;
693 attr->config = config;
694 return EVT_HANDLED;
695 }
696 return EVT_FAILED;
697 }
698
699 static enum event_result
700 parse_numeric_event(const char **strp, struct perf_event_attr *attr)
701 {
702 const char *str = *strp;
703 char *endp;
704 unsigned long type;
705 u64 config;
706
707 type = strtoul(str, &endp, 0);
708 if (endp > str && type < PERF_TYPE_MAX && *endp == ':') {
709 str = endp + 1;
710 config = strtoul(str, &endp, 0);
711 if (endp > str) {
712 attr->type = type;
713 attr->config = config;
714 *strp = endp;
715 return EVT_HANDLED;
716 }
717 }
718 return EVT_FAILED;
719 }
720
721 static enum event_result
722 parse_event_modifier(const char **strp, struct perf_event_attr *attr)
723 {
724 const char *str = *strp;
725 int exclude = 0;
726 int eu = 0, ek = 0, eh = 0, precise = 0;
727
728 if (*str++ != ':')
729 return 0;
730 while (*str) {
731 if (*str == 'u') {
732 if (!exclude)
733 exclude = eu = ek = eh = 1;
734 eu = 0;
735 } else if (*str == 'k') {
736 if (!exclude)
737 exclude = eu = ek = eh = 1;
738 ek = 0;
739 } else if (*str == 'h') {
740 if (!exclude)
741 exclude = eu = ek = eh = 1;
742 eh = 0;
743 } else if (*str == 'p') {
744 precise++;
745 } else
746 break;
747
748 ++str;
749 }
750 if (str >= *strp + 2) {
751 *strp = str;
752 attr->exclude_user = eu;
753 attr->exclude_kernel = ek;
754 attr->exclude_hv = eh;
755 attr->precise_ip = precise;
756 return 1;
757 }
758 return 0;
759 }
760
761 /*
762 * Each event can have multiple symbolic names.
763 * Symbolic names are (almost) exactly matched.
764 */
765 static enum event_result
766 parse_event_symbols(const struct option *opt, const char **str,
767 struct perf_event_attr *attr)
768 {
769 enum event_result ret;
770
771 ret = parse_tracepoint_event(opt, str, attr);
772 if (ret != EVT_FAILED)
773 goto modifier;
774
775 ret = parse_raw_event(str, attr);
776 if (ret != EVT_FAILED)
777 goto modifier;
778
779 ret = parse_numeric_event(str, attr);
780 if (ret != EVT_FAILED)
781 goto modifier;
782
783 ret = parse_symbolic_event(str, attr);
784 if (ret != EVT_FAILED)
785 goto modifier;
786
787 ret = parse_generic_hw_event(str, attr);
788 if (ret != EVT_FAILED)
789 goto modifier;
790
791 ret = parse_breakpoint_event(str, attr);
792 if (ret != EVT_FAILED)
793 goto modifier;
794
795 fprintf(stderr, "invalid or unsupported event: '%s'\n", *str);
796 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
797 return EVT_FAILED;
798
799 modifier:
800 parse_event_modifier(str, attr);
801
802 return ret;
803 }
804
805 int parse_events(const struct option *opt, const char *str, int unset __used)
806 {
807 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
808 struct perf_event_attr attr;
809 enum event_result ret;
810 const char *ostr;
811
812 for (;;) {
813 ostr = str;
814 memset(&attr, 0, sizeof(attr));
815 ret = parse_event_symbols(opt, &str, &attr);
816 if (ret == EVT_FAILED)
817 return -1;
818
819 if (!(*str == 0 || *str == ',' || isspace(*str)))
820 return -1;
821
822 if (ret != EVT_HANDLED_ALL) {
823 struct perf_evsel *evsel;
824 evsel = perf_evsel__new(&attr, evlist->nr_entries);
825 if (evsel == NULL)
826 return -1;
827 perf_evlist__add(evlist, evsel);
828
829 evsel->name = calloc(str - ostr + 1, 1);
830 if (!evsel->name)
831 return -1;
832 strncpy(evsel->name, ostr, str - ostr);
833 }
834
835 if (*str == 0)
836 break;
837 if (*str == ',')
838 ++str;
839 while (isspace(*str))
840 ++str;
841 }
842
843 return 0;
844 }
845
846 int parse_filter(const struct option *opt, const char *str,
847 int unset __used)
848 {
849 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
850 struct perf_evsel *last = NULL;
851
852 if (evlist->nr_entries > 0)
853 last = list_entry(evlist->entries.prev, struct perf_evsel, node);
854
855 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
856 fprintf(stderr,
857 "-F option should follow a -e tracepoint option\n");
858 return -1;
859 }
860
861 last->filter = strdup(str);
862 if (last->filter == NULL) {
863 fprintf(stderr, "not enough memory to hold filter string\n");
864 return -1;
865 }
866
867 return 0;
868 }
869
870 static const char * const event_type_descriptors[] = {
871 "Hardware event",
872 "Software event",
873 "Tracepoint event",
874 "Hardware cache event",
875 "Raw hardware event descriptor",
876 "Hardware breakpoint",
877 };
878
879 /*
880 * Print the events from <debugfs_mount_point>/tracing/events
881 */
882
883 void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
884 {
885 DIR *sys_dir, *evt_dir;
886 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
887 char evt_path[MAXPATHLEN];
888 char dir_path[MAXPATHLEN];
889
890 if (debugfs_valid_mountpoint(debugfs_path))
891 return;
892
893 sys_dir = opendir(debugfs_path);
894 if (!sys_dir)
895 return;
896
897 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
898 if (subsys_glob != NULL &&
899 !strglobmatch(sys_dirent.d_name, subsys_glob))
900 continue;
901
902 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
903 sys_dirent.d_name);
904 evt_dir = opendir(dir_path);
905 if (!evt_dir)
906 continue;
907
908 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
909 if (event_glob != NULL &&
910 !strglobmatch(evt_dirent.d_name, event_glob))
911 continue;
912
913 snprintf(evt_path, MAXPATHLEN, "%s:%s",
914 sys_dirent.d_name, evt_dirent.d_name);
915 printf(" %-42s [%s]\n", evt_path,
916 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
917 }
918 closedir(evt_dir);
919 }
920 closedir(sys_dir);
921 }
922
923 /*
924 * Check whether event is in <debugfs_mount_point>/tracing/events
925 */
926
927 int is_valid_tracepoint(const char *event_string)
928 {
929 DIR *sys_dir, *evt_dir;
930 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
931 char evt_path[MAXPATHLEN];
932 char dir_path[MAXPATHLEN];
933
934 if (debugfs_valid_mountpoint(debugfs_path))
935 return 0;
936
937 sys_dir = opendir(debugfs_path);
938 if (!sys_dir)
939 return 0;
940
941 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
942
943 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
944 sys_dirent.d_name);
945 evt_dir = opendir(dir_path);
946 if (!evt_dir)
947 continue;
948
949 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
950 snprintf(evt_path, MAXPATHLEN, "%s:%s",
951 sys_dirent.d_name, evt_dirent.d_name);
952 if (!strcmp(evt_path, event_string)) {
953 closedir(evt_dir);
954 closedir(sys_dir);
955 return 1;
956 }
957 }
958 closedir(evt_dir);
959 }
960 closedir(sys_dir);
961 return 0;
962 }
963
964 void print_events_type(u8 type)
965 {
966 struct event_symbol *syms = event_symbols;
967 unsigned int i;
968 char name[64];
969
970 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
971 if (type != syms->type)
972 continue;
973
974 if (strlen(syms->alias))
975 snprintf(name, sizeof(name), "%s OR %s",
976 syms->symbol, syms->alias);
977 else
978 snprintf(name, sizeof(name), "%s", syms->symbol);
979
980 printf(" %-42s [%s]\n", name,
981 event_type_descriptors[type]);
982 }
983 }
984
985 int print_hwcache_events(const char *event_glob)
986 {
987 unsigned int type, op, i, printed = 0;
988
989 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
990 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
991 /* skip invalid cache type */
992 if (!is_cache_op_valid(type, op))
993 continue;
994
995 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
996 char *name = event_cache_name(type, op, i);
997
998 if (event_glob != NULL &&
999 !strglobmatch(name, event_glob))
1000 continue;
1001
1002 printf(" %-42s [%s]\n", name,
1003 event_type_descriptors[PERF_TYPE_HW_CACHE]);
1004 ++printed;
1005 }
1006 }
1007 }
1008
1009 return printed;
1010 }
1011
1012 /*
1013 * Print the help text for the event symbols:
1014 */
1015 void print_events(const char *event_glob)
1016 {
1017 struct event_symbol *syms = event_symbols;
1018 unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
1019 char name[40];
1020
1021 printf("\n");
1022 printf("List of pre-defined events (to be used in -e):\n");
1023
1024 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
1025 type = syms->type;
1026
1027 if (type != prev_type && printed) {
1028 printf("\n");
1029 printed = 0;
1030 ntypes_printed++;
1031 }
1032
1033 if (event_glob != NULL &&
1034 !(strglobmatch(syms->symbol, event_glob) ||
1035 (syms->alias && strglobmatch(syms->alias, event_glob))))
1036 continue;
1037
1038 if (strlen(syms->alias))
1039 sprintf(name, "%s OR %s", syms->symbol, syms->alias);
1040 else
1041 strcpy(name, syms->symbol);
1042 printf(" %-42s [%s]\n", name,
1043 event_type_descriptors[type]);
1044
1045 prev_type = type;
1046 ++printed;
1047 }
1048
1049 if (ntypes_printed) {
1050 printed = 0;
1051 printf("\n");
1052 }
1053 print_hwcache_events(event_glob);
1054
1055 if (event_glob != NULL)
1056 return;
1057
1058 printf("\n");
1059 printf(" %-42s [%s]\n",
1060 "rNNN (see 'perf list --help' on how to encode it)",
1061 event_type_descriptors[PERF_TYPE_RAW]);
1062 printf("\n");
1063
1064 printf(" %-42s [%s]\n",
1065 "mem:<addr>[:access]",
1066 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1067 printf("\n");
1068
1069 print_tracepoint_events(NULL, NULL);
1070
1071 exit(129);
1072 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree