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perf tools: Add front-end and back-end stalled cycles support
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / tools / perf / util / parse-events.c
blob04d2f0a966744bffaf697aef5263b8eabd38e6b3
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[] = {
64 "cycles",
65 "instructions",
66 "cache-references",
67 "cache-misses",
68 "branches",
69 "branch-misses",
70 "bus-cycles",
71 "stalled-cycles",
72 };
73
74 static const char *sw_event_names[] = {
75 "cpu-clock",
76 "task-clock",
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_type(int type)
270 {
271 switch (type) {
272 case PERF_TYPE_HARDWARE:
273 return "hardware";
274
275 case PERF_TYPE_SOFTWARE:
276 return "software";
277
278 case PERF_TYPE_TRACEPOINT:
279 return "tracepoint";
280
281 case PERF_TYPE_HW_CACHE:
282 return "hardware-cache";
283
284 default:
285 break;
286 }
287
288 return "unknown";
289 }
290
291 const char *event_name(struct perf_evsel *evsel)
292 {
293 u64 config = evsel->attr.config;
294 int type = evsel->attr.type;
295
296 if (evsel->name)
297 return evsel->name;
298
299 return __event_name(type, config);
300 }
301
302 const char *__event_name(int type, u64 config)
303 {
304 static char buf[32];
305
306 if (type == PERF_TYPE_RAW) {
307 sprintf(buf, "raw 0x%" PRIx64, config);
308 return buf;
309 }
310
311 switch (type) {
312 case PERF_TYPE_HARDWARE:
313 if (config < PERF_COUNT_HW_MAX && hw_event_names[config])
314 return hw_event_names[config];
315 return "unknown-hardware";
316
317 case PERF_TYPE_HW_CACHE: {
318 u8 cache_type, cache_op, cache_result;
319
320 cache_type = (config >> 0) & 0xff;
321 if (cache_type > PERF_COUNT_HW_CACHE_MAX)
322 return "unknown-ext-hardware-cache-type";
323
324 cache_op = (config >> 8) & 0xff;
325 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
326 return "unknown-ext-hardware-cache-op";
327
328 cache_result = (config >> 16) & 0xff;
329 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
330 return "unknown-ext-hardware-cache-result";
331
332 if (!is_cache_op_valid(cache_type, cache_op))
333 return "invalid-cache";
334
335 return event_cache_name(cache_type, cache_op, cache_result);
336 }
337
338 case PERF_TYPE_SOFTWARE:
339 if (config < PERF_COUNT_SW_MAX && sw_event_names[config])
340 return sw_event_names[config];
341 return "unknown-software";
342
343 case PERF_TYPE_TRACEPOINT:
344 return tracepoint_id_to_name(config);
345
346 default:
347 break;
348 }
349
350 return "unknown";
351 }
352
353 static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
354 {
355 int i, j;
356 int n, longest = -1;
357
358 for (i = 0; i < size; i++) {
359 for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
360 n = strlen(names[i][j]);
361 if (n > longest && !strncasecmp(*str, names[i][j], n))
362 longest = n;
363 }
364 if (longest > 0) {
365 *str += longest;
366 return i;
367 }
368 }
369
370 return -1;
371 }
372
373 static enum event_result
374 parse_generic_hw_event(const char **str, struct perf_event_attr *attr)
375 {
376 const char *s = *str;
377 int cache_type = -1, cache_op = -1, cache_result = -1;
378
379 cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX);
380 /*
381 * No fallback - if we cannot get a clear cache type
382 * then bail out:
383 */
384 if (cache_type == -1)
385 return EVT_FAILED;
386
387 while ((cache_op == -1 || cache_result == -1) && *s == '-') {
388 ++s;
389
390 if (cache_op == -1) {
391 cache_op = parse_aliases(&s, hw_cache_op,
392 PERF_COUNT_HW_CACHE_OP_MAX);
393 if (cache_op >= 0) {
394 if (!is_cache_op_valid(cache_type, cache_op))
395 return 0;
396 continue;
397 }
398 }
399
400 if (cache_result == -1) {
401 cache_result = parse_aliases(&s, hw_cache_result,
402 PERF_COUNT_HW_CACHE_RESULT_MAX);
403 if (cache_result >= 0)
404 continue;
405 }
406
407 /*
408 * Can't parse this as a cache op or result, so back up
409 * to the '-'.
410 */
411 --s;
412 break;
413 }
414
415 /*
416 * Fall back to reads:
417 */
418 if (cache_op == -1)
419 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
420
421 /*
422 * Fall back to accesses:
423 */
424 if (cache_result == -1)
425 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
426
427 attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
428 attr->type = PERF_TYPE_HW_CACHE;
429
430 *str = s;
431 return EVT_HANDLED;
432 }
433
434 static enum event_result
435 parse_single_tracepoint_event(char *sys_name,
436 const char *evt_name,
437 unsigned int evt_length,
438 struct perf_event_attr *attr,
439 const char **strp)
440 {
441 char evt_path[MAXPATHLEN];
442 char id_buf[4];
443 u64 id;
444 int fd;
445
446 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
447 sys_name, evt_name);
448
449 fd = open(evt_path, O_RDONLY);
450 if (fd < 0)
451 return EVT_FAILED;
452
453 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
454 close(fd);
455 return EVT_FAILED;
456 }
457
458 close(fd);
459 id = atoll(id_buf);
460 attr->config = id;
461 attr->type = PERF_TYPE_TRACEPOINT;
462 *strp += strlen(sys_name) + evt_length + 1; /* + 1 for the ':' */
463
464 attr->sample_type |= PERF_SAMPLE_RAW;
465 attr->sample_type |= PERF_SAMPLE_TIME;
466 attr->sample_type |= PERF_SAMPLE_CPU;
467
468 attr->sample_period = 1;
469
470
471 return EVT_HANDLED;
472 }
473
474 /* sys + ':' + event + ':' + flags*/
475 #define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
476 static enum event_result
477 parse_multiple_tracepoint_event(const struct option *opt, char *sys_name,
478 const char *evt_exp, char *flags)
479 {
480 char evt_path[MAXPATHLEN];
481 struct dirent *evt_ent;
482 DIR *evt_dir;
483
484 snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name);
485 evt_dir = opendir(evt_path);
486
487 if (!evt_dir) {
488 perror("Can't open event dir");
489 return EVT_FAILED;
490 }
491
492 while ((evt_ent = readdir(evt_dir))) {
493 char event_opt[MAX_EVOPT_LEN + 1];
494 int len;
495
496 if (!strcmp(evt_ent->d_name, ".")
497 || !strcmp(evt_ent->d_name, "..")
498 || !strcmp(evt_ent->d_name, "enable")
499 || !strcmp(evt_ent->d_name, "filter"))
500 continue;
501
502 if (!strglobmatch(evt_ent->d_name, evt_exp))
503 continue;
504
505 len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
506 evt_ent->d_name, flags ? ":" : "",
507 flags ?: "");
508 if (len < 0)
509 return EVT_FAILED;
510
511 if (parse_events(opt, event_opt, 0))
512 return EVT_FAILED;
513 }
514
515 return EVT_HANDLED_ALL;
516 }
517
518 static enum event_result
519 parse_tracepoint_event(const struct option *opt, 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 + 1; /* 1 == the ':' */
559 return parse_multiple_tracepoint_event(opt, sys_name, evt_name,
560 flags);
561 } else {
562 return parse_single_tracepoint_event(sys_name, evt_name,
563 evt_length, attr, strp);
564 }
565 }
566
567 static enum event_result
568 parse_breakpoint_type(const char *type, const char **strp,
569 struct perf_event_attr *attr)
570 {
571 int i;
572
573 for (i = 0; i < 3; i++) {
574 if (!type[i])
575 break;
576
577 switch (type[i]) {
578 case 'r':
579 attr->bp_type |= HW_BREAKPOINT_R;
580 break;
581 case 'w':
582 attr->bp_type |= HW_BREAKPOINT_W;
583 break;
584 case 'x':
585 attr->bp_type |= HW_BREAKPOINT_X;
586 break;
587 default:
588 return EVT_FAILED;
589 }
590 }
591 if (!attr->bp_type) /* Default */
592 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
593
594 *strp = type + i;
595
596 return EVT_HANDLED;
597 }
598
599 static enum event_result
600 parse_breakpoint_event(const char **strp, struct perf_event_attr *attr)
601 {
602 const char *target;
603 const char *type;
604 char *endaddr;
605 u64 addr;
606 enum event_result err;
607
608 target = strchr(*strp, ':');
609 if (!target)
610 return EVT_FAILED;
611
612 if (strncmp(*strp, "mem", target - *strp) != 0)
613 return EVT_FAILED;
614
615 target++;
616
617 addr = strtoull(target, &endaddr, 0);
618 if (target == endaddr)
619 return EVT_FAILED;
620
621 attr->bp_addr = addr;
622 *strp = endaddr;
623
624 type = strchr(target, ':');
625
626 /* If no type is defined, just rw as default */
627 if (!type) {
628 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
629 } else {
630 err = parse_breakpoint_type(++type, strp, attr);
631 if (err == EVT_FAILED)
632 return EVT_FAILED;
633 }
634
635 /*
636 * We should find a nice way to override the access length
637 * Provide some defaults for now
638 */
639 if (attr->bp_type == HW_BREAKPOINT_X)
640 attr->bp_len = sizeof(long);
641 else
642 attr->bp_len = HW_BREAKPOINT_LEN_4;
643
644 attr->type = PERF_TYPE_BREAKPOINT;
645
646 return EVT_HANDLED;
647 }
648
649 static int check_events(const char *str, unsigned int i)
650 {
651 int n;
652
653 n = strlen(event_symbols[i].symbol);
654 if (!strncasecmp(str, event_symbols[i].symbol, n))
655 return n;
656
657 n = strlen(event_symbols[i].alias);
658 if (n) {
659 if (!strncasecmp(str, event_symbols[i].alias, n))
660 return n;
661 }
662
663 return 0;
664 }
665
666 static enum event_result
667 parse_symbolic_event(const char **strp, struct perf_event_attr *attr)
668 {
669 const char *str = *strp;
670 unsigned int i;
671 int n;
672
673 for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
674 n = check_events(str, i);
675 if (n > 0) {
676 attr->type = event_symbols[i].type;
677 attr->config = event_symbols[i].config;
678 *strp = str + n;
679 return EVT_HANDLED;
680 }
681 }
682 return EVT_FAILED;
683 }
684
685 static enum event_result
686 parse_raw_event(const char **strp, struct perf_event_attr *attr)
687 {
688 const char *str = *strp;
689 u64 config;
690 int n;
691
692 if (*str != 'r')
693 return EVT_FAILED;
694 n = hex2u64(str + 1, &config);
695 if (n > 0) {
696 *strp = str + n + 1;
697 attr->type = PERF_TYPE_RAW;
698 attr->config = config;
699 return EVT_HANDLED;
700 }
701 return EVT_FAILED;
702 }
703
704 static enum event_result
705 parse_numeric_event(const char **strp, struct perf_event_attr *attr)
706 {
707 const char *str = *strp;
708 char *endp;
709 unsigned long type;
710 u64 config;
711
712 type = strtoul(str, &endp, 0);
713 if (endp > str && type < PERF_TYPE_MAX && *endp == ':') {
714 str = endp + 1;
715 config = strtoul(str, &endp, 0);
716 if (endp > str) {
717 attr->type = type;
718 attr->config = config;
719 *strp = endp;
720 return EVT_HANDLED;
721 }
722 }
723 return EVT_FAILED;
724 }
725
726 static int
727 parse_event_modifier(const char **strp, struct perf_event_attr *attr)
728 {
729 const char *str = *strp;
730 int exclude = 0;
731 int eu = 0, ek = 0, eh = 0, precise = 0;
732
733 if (!*str)
734 return 0;
735
736 if (*str++ != ':')
737 return -1;
738
739 while (*str) {
740 if (*str == 'u') {
741 if (!exclude)
742 exclude = eu = ek = eh = 1;
743 eu = 0;
744 } else if (*str == 'k') {
745 if (!exclude)
746 exclude = eu = ek = eh = 1;
747 ek = 0;
748 } else if (*str == 'h') {
749 if (!exclude)
750 exclude = eu = ek = eh = 1;
751 eh = 0;
752 } else if (*str == 'p') {
753 precise++;
754 } else
755 break;
756
757 ++str;
758 }
759 if (str < *strp + 2)
760 return -1;
761
762 *strp = str;
763
764 attr->exclude_user = eu;
765 attr->exclude_kernel = ek;
766 attr->exclude_hv = eh;
767 attr->precise_ip = precise;
768
769 return 0;
770 }
771
772 /*
773 * Each event can have multiple symbolic names.
774 * Symbolic names are (almost) exactly matched.
775 */
776 static enum event_result
777 parse_event_symbols(const struct option *opt, const char **str,
778 struct perf_event_attr *attr)
779 {
780 enum event_result ret;
781
782 ret = parse_tracepoint_event(opt, str, attr);
783 if (ret != EVT_FAILED)
784 goto modifier;
785
786 ret = parse_raw_event(str, attr);
787 if (ret != EVT_FAILED)
788 goto modifier;
789
790 ret = parse_numeric_event(str, attr);
791 if (ret != EVT_FAILED)
792 goto modifier;
793
794 ret = parse_symbolic_event(str, attr);
795 if (ret != EVT_FAILED)
796 goto modifier;
797
798 ret = parse_generic_hw_event(str, attr);
799 if (ret != EVT_FAILED)
800 goto modifier;
801
802 ret = parse_breakpoint_event(str, attr);
803 if (ret != EVT_FAILED)
804 goto modifier;
805
806 fprintf(stderr, "invalid or unsupported event: '%s'\n", *str);
807 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
808 return EVT_FAILED;
809
810 modifier:
811 if (parse_event_modifier(str, attr) < 0) {
812 fprintf(stderr, "invalid event modifier: '%s'\n", *str);
813 fprintf(stderr, "Run 'perf list' for a list of valid events and modifiers\n");
814
815 return EVT_FAILED;
816 }
817
818 return ret;
819 }
820
821 int parse_events(const struct option *opt, const char *str, int unset __used)
822 {
823 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
824 struct perf_event_attr attr;
825 enum event_result ret;
826 const char *ostr;
827
828 for (;;) {
829 ostr = str;
830 memset(&attr, 0, sizeof(attr));
831 ret = parse_event_symbols(opt, &str, &attr);
832 if (ret == EVT_FAILED)
833 return -1;
834
835 if (!(*str == 0 || *str == ',' || isspace(*str)))
836 return -1;
837
838 if (ret != EVT_HANDLED_ALL) {
839 struct perf_evsel *evsel;
840 evsel = perf_evsel__new(&attr, evlist->nr_entries);
841 if (evsel == NULL)
842 return -1;
843 perf_evlist__add(evlist, evsel);
844
845 evsel->name = calloc(str - ostr + 1, 1);
846 if (!evsel->name)
847 return -1;
848 strncpy(evsel->name, ostr, str - ostr);
849 }
850
851 if (*str == 0)
852 break;
853 if (*str == ',')
854 ++str;
855 while (isspace(*str))
856 ++str;
857 }
858
859 return 0;
860 }
861
862 int parse_filter(const struct option *opt, const char *str,
863 int unset __used)
864 {
865 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
866 struct perf_evsel *last = NULL;
867
868 if (evlist->nr_entries > 0)
869 last = list_entry(evlist->entries.prev, struct perf_evsel, node);
870
871 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
872 fprintf(stderr,
873 "-F option should follow a -e tracepoint option\n");
874 return -1;
875 }
876
877 last->filter = strdup(str);
878 if (last->filter == NULL) {
879 fprintf(stderr, "not enough memory to hold filter string\n");
880 return -1;
881 }
882
883 return 0;
884 }
885
886 static const char * const event_type_descriptors[] = {
887 "Hardware event",
888 "Software event",
889 "Tracepoint event",
890 "Hardware cache event",
891 "Raw hardware event descriptor",
892 "Hardware breakpoint",
893 };
894
895 /*
896 * Print the events from <debugfs_mount_point>/tracing/events
897 */
898
899 void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
900 {
901 DIR *sys_dir, *evt_dir;
902 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
903 char evt_path[MAXPATHLEN];
904 char dir_path[MAXPATHLEN];
905
906 if (debugfs_valid_mountpoint(debugfs_path))
907 return;
908
909 sys_dir = opendir(debugfs_path);
910 if (!sys_dir)
911 return;
912
913 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
914 if (subsys_glob != NULL &&
915 !strglobmatch(sys_dirent.d_name, subsys_glob))
916 continue;
917
918 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
919 sys_dirent.d_name);
920 evt_dir = opendir(dir_path);
921 if (!evt_dir)
922 continue;
923
924 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
925 if (event_glob != NULL &&
926 !strglobmatch(evt_dirent.d_name, event_glob))
927 continue;
928
929 snprintf(evt_path, MAXPATHLEN, "%s:%s",
930 sys_dirent.d_name, evt_dirent.d_name);
931 printf(" %-42s [%s]\n", evt_path,
932 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
933 }
934 closedir(evt_dir);
935 }
936 closedir(sys_dir);
937 }
938
939 /*
940 * Check whether event is in <debugfs_mount_point>/tracing/events
941 */
942
943 int is_valid_tracepoint(const char *event_string)
944 {
945 DIR *sys_dir, *evt_dir;
946 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
947 char evt_path[MAXPATHLEN];
948 char dir_path[MAXPATHLEN];
949
950 if (debugfs_valid_mountpoint(debugfs_path))
951 return 0;
952
953 sys_dir = opendir(debugfs_path);
954 if (!sys_dir)
955 return 0;
956
957 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
958
959 snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
960 sys_dirent.d_name);
961 evt_dir = opendir(dir_path);
962 if (!evt_dir)
963 continue;
964
965 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
966 snprintf(evt_path, MAXPATHLEN, "%s:%s",
967 sys_dirent.d_name, evt_dirent.d_name);
968 if (!strcmp(evt_path, event_string)) {
969 closedir(evt_dir);
970 closedir(sys_dir);
971 return 1;
972 }
973 }
974 closedir(evt_dir);
975 }
976 closedir(sys_dir);
977 return 0;
978 }
979
980 void print_events_type(u8 type)
981 {
982 struct event_symbol *syms = event_symbols;
983 unsigned int i;
984 char name[64];
985
986 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
987 if (type != syms->type)
988 continue;
989
990 if (strlen(syms->alias))
991 snprintf(name, sizeof(name), "%s OR %s",
992 syms->symbol, syms->alias);
993 else
994 snprintf(name, sizeof(name), "%s", syms->symbol);
995
996 printf(" %-42s [%s]\n", name,
997 event_type_descriptors[type]);
998 }
999 }
1000
1001 int print_hwcache_events(const char *event_glob)
1002 {
1003 unsigned int type, op, i, printed = 0;
1004
1005 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1006 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1007 /* skip invalid cache type */
1008 if (!is_cache_op_valid(type, op))
1009 continue;
1010
1011 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1012 char *name = event_cache_name(type, op, i);
1013
1014 if (event_glob != NULL &&
1015 !strglobmatch(name, event_glob))
1016 continue;
1017
1018 printf(" %-42s [%s]\n", name,
1019 event_type_descriptors[PERF_TYPE_HW_CACHE]);
1020 ++printed;
1021 }
1022 }
1023 }
1024
1025 return printed;
1026 }
1027
1028 /*
1029 * Print the help text for the event symbols:
1030 */
1031 void print_events(const char *event_glob)
1032 {
1033 struct event_symbol *syms = event_symbols;
1034 unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
1035 char name[40];
1036
1037 printf("\n");
1038 printf("List of pre-defined events (to be used in -e):\n");
1039
1040 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
1041 type = syms->type;
1042
1043 if (type != prev_type && printed) {
1044 printf("\n");
1045 printed = 0;
1046 ntypes_printed++;
1047 }
1048
1049 if (event_glob != NULL &&
1050 !(strglobmatch(syms->symbol, event_glob) ||
1051 (syms->alias && strglobmatch(syms->alias, event_glob))))
1052 continue;
1053
1054 if (strlen(syms->alias))
1055 sprintf(name, "%s OR %s", syms->symbol, syms->alias);
1056 else
1057 strcpy(name, syms->symbol);
1058 printf(" %-42s [%s]\n", name,
1059 event_type_descriptors[type]);
1060
1061 prev_type = type;
1062 ++printed;
1063 }
1064
1065 if (ntypes_printed) {
1066 printed = 0;
1067 printf("\n");
1068 }
1069 print_hwcache_events(event_glob);
1070
1071 if (event_glob != NULL)
1072 return;
1073
1074 printf("\n");
1075 printf(" %-42s [%s]\n",
1076 "rNNN (see 'perf list --help' on how to encode it)",
1077 event_type_descriptors[PERF_TYPE_RAW]);
1078 printf("\n");
1079
1080 printf(" %-42s [%s]\n",
1081 "mem:<addr>[:access]",
1082 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1083 printf("\n");
1084
1085 print_tracepoint_events(NULL, NULL);
1086
1087 exit(129);
1088 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree