Root/
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 | } |
1094 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9