Commit | Line | Data |
---|---|---|
1b290d67 | 1 | #include "../../../include/linux/hw_breakpoint.h" |
8ad8db37 | 2 | #include "util.h" |
6b58e7f1 | 3 | #include "../perf.h" |
361c99a6 | 4 | #include "evlist.h" |
69aad6f1 | 5 | #include "evsel.h" |
8ad8db37 IM |
6 | #include "parse-options.h" |
7 | #include "parse-events.h" | |
8 | #include "exec_cmd.h" | |
a0055ae2 | 9 | #include "string.h" |
5aab621b | 10 | #include "symbol.h" |
5beeded1 | 11 | #include "cache.h" |
8755a8f2 | 12 | #include "header.h" |
549104f2 | 13 | #include "debugfs.h" |
8ad8db37 | 14 | |
8ad8db37 | 15 | struct event_symbol { |
83a0944f IM |
16 | u8 type; |
17 | u64 config; | |
18 | const char *symbol; | |
19 | const char *alias; | |
8ad8db37 IM |
20 | }; |
21 | ||
bcd3279f FW |
22 | enum event_result { |
23 | EVT_FAILED, | |
24 | EVT_HANDLED, | |
25 | EVT_HANDLED_ALL | |
26 | }; | |
27 | ||
5beeded1 JB |
28 | char debugfs_path[MAXPATHLEN]; |
29 | ||
51e26842 JSR |
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 | |
a21ca2ca | 32 | |
8ad8db37 | 33 | static struct event_symbol event_symbols[] = { |
74d5b588 JSR |
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", "" }, | |
c0c22dbf | 44 | { CSW(PAGE_FAULTS), "page-faults", "faults" }, |
74d5b588 JSR |
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" }, | |
f7d79860 AB |
49 | { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" }, |
50 | { CSW(EMULATION_FAULTS), "emulation-faults", "" }, | |
8ad8db37 IM |
51 | }; |
52 | ||
cdd6c482 IM |
53 | #define __PERF_EVENT_FIELD(config, name) \ |
54 | ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) | |
5242519b | 55 | |
cdd6c482 IM |
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) | |
5242519b | 60 | |
83a0944f | 61 | static const char *hw_event_names[] = { |
8faf3b54 | 62 | "cycles", |
5242519b | 63 | "instructions", |
8faf3b54 IM |
64 | "cache-references", |
65 | "cache-misses", | |
5242519b | 66 | "branches", |
8faf3b54 IM |
67 | "branch-misses", |
68 | "bus-cycles", | |
5242519b IM |
69 | }; |
70 | ||
83a0944f | 71 | static const char *sw_event_names[] = { |
44175b6f IM |
72 | "cpu-clock-msecs", |
73 | "task-clock-msecs", | |
8faf3b54 IM |
74 | "page-faults", |
75 | "context-switches", | |
76 | "CPU-migrations", | |
77 | "minor-faults", | |
78 | "major-faults", | |
f7d79860 AB |
79 | "alignment-faults", |
80 | "emulation-faults", | |
5242519b IM |
81 | }; |
82 | ||
8326f44d IM |
83 | #define MAX_ALIASES 8 |
84 | ||
83a0944f | 85 | static const char *hw_cache[][MAX_ALIASES] = { |
9590b7ba AB |
86 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, |
87 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, | |
e5c59547 JSR |
88 | { "LLC", "L2" }, |
89 | { "dTLB", "d-tlb", "Data-TLB", }, | |
90 | { "iTLB", "i-tlb", "Instruction-TLB", }, | |
91 | { "branch", "branches", "bpu", "btb", "bpc", }, | |
8326f44d IM |
92 | }; |
93 | ||
83a0944f | 94 | static const char *hw_cache_op[][MAX_ALIASES] = { |
e5c59547 JSR |
95 | { "load", "loads", "read", }, |
96 | { "store", "stores", "write", }, | |
97 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, | |
8326f44d IM |
98 | }; |
99 | ||
83a0944f | 100 | static const char *hw_cache_result[][MAX_ALIASES] = { |
e5c59547 JSR |
101 | { "refs", "Reference", "ops", "access", }, |
102 | { "misses", "miss", }, | |
8326f44d IM |
103 | }; |
104 | ||
06813f6c JSR |
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 | ||
6b58e7f1 | 125 | #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \ |
f6bdafef | 126 | while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \ |
6b58e7f1 | 127 | if (sys_dirent.d_type == DT_DIR && \ |
f6bdafef JB |
128 | (strcmp(sys_dirent.d_name, ".")) && \ |
129 | (strcmp(sys_dirent.d_name, ".."))) | |
130 | ||
ae07b63f PZ |
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 | ||
6b58e7f1 | 146 | #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \ |
f6bdafef | 147 | while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \ |
6b58e7f1 | 148 | if (evt_dirent.d_type == DT_DIR && \ |
f6bdafef | 149 | (strcmp(evt_dirent.d_name, ".")) && \ |
ae07b63f PZ |
150 | (strcmp(evt_dirent.d_name, "..")) && \ |
151 | (!tp_event_has_id(&sys_dirent, &evt_dirent))) | |
f6bdafef | 152 | |
270bbbe8 | 153 | #define MAX_EVENT_LENGTH 512 |
f6bdafef | 154 | |
f6bdafef | 155 | |
1ef2ed10 | 156 | struct tracepoint_path *tracepoint_id_to_path(u64 config) |
f6bdafef | 157 | { |
1ef2ed10 | 158 | struct tracepoint_path *path = NULL; |
f6bdafef JB |
159 | DIR *sys_dir, *evt_dir; |
160 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
f6bdafef | 161 | char id_buf[4]; |
725b1368 | 162 | int fd; |
f6bdafef JB |
163 | u64 id; |
164 | char evt_path[MAXPATHLEN]; | |
725b1368 | 165 | char dir_path[MAXPATHLEN]; |
f6bdafef | 166 | |
549104f2 | 167 | if (debugfs_valid_mountpoint(debugfs_path)) |
1ef2ed10 | 168 | return NULL; |
f6bdafef | 169 | |
5beeded1 | 170 | sys_dir = opendir(debugfs_path); |
f6bdafef | 171 | if (!sys_dir) |
725b1368 | 172 | return NULL; |
6b58e7f1 UD |
173 | |
174 | for_each_subsystem(sys_dir, sys_dirent, sys_next) { | |
725b1368 ED |
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) | |
6b58e7f1 | 180 | continue; |
725b1368 | 181 | |
6b58e7f1 | 182 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { |
725b1368 ED |
183 | |
184 | snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, | |
f6bdafef | 185 | evt_dirent.d_name); |
725b1368 | 186 | fd = open(evt_path, O_RDONLY); |
f6bdafef JB |
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); | |
59b4caeb | 198 | path = zalloc(sizeof(*path)); |
1ef2ed10 FW |
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; | |
f6bdafef JB |
215 | } |
216 | } | |
217 | closedir(evt_dir); | |
218 | } | |
219 | ||
f6bdafef | 220 | closedir(sys_dir); |
1ef2ed10 FW |
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; | |
f6bdafef JB |
240 | } |
241 | ||
06813f6c JSR |
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 | ||
e5c59547 JSR |
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 | ||
69aad6f1 | 266 | const char *event_name(struct perf_evsel *evsel) |
5242519b | 267 | { |
69aad6f1 ACM |
268 | u64 config = evsel->attr.config; |
269 | int type = evsel->attr.type; | |
8f18aec5 | 270 | |
f0c55bcf SE |
271 | if (evsel->name) |
272 | return evsel->name; | |
273 | ||
8f18aec5 PZ |
274 | return __event_name(type, config); |
275 | } | |
276 | ||
83a0944f | 277 | const char *__event_name(int type, u64 config) |
8f18aec5 | 278 | { |
5242519b IM |
279 | static char buf[32]; |
280 | ||
8f18aec5 | 281 | if (type == PERF_TYPE_RAW) { |
9486aa38 | 282 | sprintf(buf, "raw 0x%" PRIx64, config); |
5242519b IM |
283 | return buf; |
284 | } | |
285 | ||
286 | switch (type) { | |
287 | case PERF_TYPE_HARDWARE: | |
f4dbfa8f | 288 | if (config < PERF_COUNT_HW_MAX) |
a21ca2ca | 289 | return hw_event_names[config]; |
5242519b IM |
290 | return "unknown-hardware"; |
291 | ||
8326f44d | 292 | case PERF_TYPE_HW_CACHE: { |
9cffa8d5 | 293 | u8 cache_type, cache_op, cache_result; |
8326f44d IM |
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; | |
8faf3b54 IM |
300 | if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX) |
301 | return "unknown-ext-hardware-cache-op"; | |
8326f44d IM |
302 | |
303 | cache_result = (config >> 16) & 0xff; | |
8faf3b54 IM |
304 | if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX) |
305 | return "unknown-ext-hardware-cache-result"; | |
8326f44d | 306 | |
06813f6c JSR |
307 | if (!is_cache_op_valid(cache_type, cache_op)) |
308 | return "invalid-cache"; | |
8326f44d | 309 | |
e5c59547 | 310 | return event_cache_name(cache_type, cache_op, cache_result); |
8326f44d IM |
311 | } |
312 | ||
5242519b | 313 | case PERF_TYPE_SOFTWARE: |
f4dbfa8f | 314 | if (config < PERF_COUNT_SW_MAX) |
a21ca2ca | 315 | return sw_event_names[config]; |
5242519b IM |
316 | return "unknown-software"; |
317 | ||
f6bdafef JB |
318 | case PERF_TYPE_TRACEPOINT: |
319 | return tracepoint_id_to_name(config); | |
320 | ||
5242519b IM |
321 | default: |
322 | break; | |
323 | } | |
324 | ||
325 | return "unknown"; | |
326 | } | |
327 | ||
83a0944f | 328 | static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size) |
8326f44d IM |
329 | { |
330 | int i, j; | |
61c45981 | 331 | int n, longest = -1; |
8326f44d IM |
332 | |
333 | for (i = 0; i < size; i++) { | |
61c45981 PM |
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; | |
8326f44d IM |
342 | } |
343 | } | |
344 | ||
8953645f | 345 | return -1; |
8326f44d IM |
346 | } |
347 | ||
bcd3279f | 348 | static enum event_result |
cdd6c482 | 349 | parse_generic_hw_event(const char **str, struct perf_event_attr *attr) |
8326f44d | 350 | { |
61c45981 PM |
351 | const char *s = *str; |
352 | int cache_type = -1, cache_op = -1, cache_result = -1; | |
8326f44d | 353 | |
61c45981 | 354 | cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX); |
8326f44d IM |
355 | /* |
356 | * No fallback - if we cannot get a clear cache type | |
357 | * then bail out: | |
358 | */ | |
359 | if (cache_type == -1) | |
bcd3279f | 360 | return EVT_FAILED; |
61c45981 PM |
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 | } | |
8326f44d | 389 | |
8326f44d IM |
390 | /* |
391 | * Fall back to reads: | |
392 | */ | |
8953645f IM |
393 | if (cache_op == -1) |
394 | cache_op = PERF_COUNT_HW_CACHE_OP_READ; | |
8326f44d | 395 | |
8326f44d IM |
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 | ||
61c45981 | 405 | *str = s; |
bcd3279f FW |
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, | |
cdd6c482 | 413 | struct perf_event_attr *attr, |
bcd3279f FW |
414 | const char **strp) |
415 | { | |
416 | char evt_path[MAXPATHLEN]; | |
417 | char id_buf[4]; | |
418 | u64 id; | |
419 | int fd; | |
420 | ||
bcd3279f FW |
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; | |
4c635a4e | 437 | *strp += strlen(sys_name) + evt_length + 1; /* + 1 for the ':' */ |
bcd3279f | 438 | |
5710fcad SE |
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 | ||
bcd3279f | 446 | return EVT_HANDLED; |
8326f44d IM |
447 | } |
448 | ||
bcd3279f FW |
449 | /* sys + ':' + event + ':' + flags*/ |
450 | #define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128) | |
451 | static enum event_result | |
17ea1b70 ACM |
452 | parse_multiple_tracepoint_event(const struct option *opt, char *sys_name, |
453 | const char *evt_exp, char *flags) | |
bcd3279f FW |
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; | |
bcd3279f FW |
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 | ||
fb1d2edf MH |
477 | if (!strglobmatch(evt_ent->d_name, evt_exp)) |
478 | continue; | |
479 | ||
180570fd UD |
480 | len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name, |
481 | evt_ent->d_name, flags ? ":" : "", | |
482 | flags ?: ""); | |
bcd3279f FW |
483 | if (len < 0) |
484 | return EVT_FAILED; | |
485 | ||
17ea1b70 | 486 | if (parse_events(opt, event_opt, 0)) |
bcd3279f FW |
487 | return EVT_FAILED; |
488 | } | |
489 | ||
490 | return EVT_HANDLED_ALL; | |
491 | } | |
492 | ||
17ea1b70 ACM |
493 | static enum event_result |
494 | parse_tracepoint_event(const struct option *opt, const char **strp, | |
495 | struct perf_event_attr *attr) | |
f6bdafef JB |
496 | { |
497 | const char *evt_name; | |
4c635a4e | 498 | char *flags = NULL, *comma_loc; |
f6bdafef | 499 | char sys_name[MAX_EVENT_LENGTH]; |
f6bdafef | 500 | unsigned int sys_length, evt_length; |
f6bdafef | 501 | |
549104f2 | 502 | if (debugfs_valid_mountpoint(debugfs_path)) |
f6bdafef JB |
503 | return 0; |
504 | ||
505 | evt_name = strchr(*strp, ':'); | |
506 | if (!evt_name) | |
bcd3279f | 507 | return EVT_FAILED; |
f6bdafef JB |
508 | |
509 | sys_length = evt_name - *strp; | |
510 | if (sys_length >= MAX_EVENT_LENGTH) | |
511 | return 0; | |
512 | ||
513 | strncpy(sys_name, *strp, sys_length); | |
514 | sys_name[sys_length] = '\0'; | |
515 | evt_name = evt_name + 1; | |
3a9f131f | 516 | |
4c635a4e CA |
517 | comma_loc = strchr(evt_name, ','); |
518 | if (comma_loc) { | |
519 | /* take the event name up to the comma */ | |
520 | evt_name = strndup(evt_name, comma_loc - evt_name); | |
521 | } | |
3a9f131f FW |
522 | flags = strchr(evt_name, ':'); |
523 | if (flags) { | |
1fc35b29 IM |
524 | /* split it out: */ |
525 | evt_name = strndup(evt_name, flags - evt_name); | |
3a9f131f | 526 | flags++; |
3a9f131f FW |
527 | } |
528 | ||
f6bdafef JB |
529 | evt_length = strlen(evt_name); |
530 | if (evt_length >= MAX_EVENT_LENGTH) | |
bcd3279f | 531 | return EVT_FAILED; |
fb1d2edf | 532 | if (strpbrk(evt_name, "*?")) { |
dd9a9ad5 | 533 | *strp += strlen(sys_name) + evt_length + 1; /* 1 == the ':' */ |
17ea1b70 | 534 | return parse_multiple_tracepoint_event(opt, sys_name, evt_name, |
fb1d2edf | 535 | flags); |
f006d25a | 536 | } else { |
bcd3279f | 537 | return parse_single_tracepoint_event(sys_name, evt_name, |
bdef3b02 | 538 | evt_length, attr, strp); |
f006d25a | 539 | } |
f6bdafef JB |
540 | } |
541 | ||
1b290d67 FW |
542 | static enum event_result |
543 | parse_breakpoint_type(const char *type, const char **strp, | |
544 | struct perf_event_attr *attr) | |
545 | { | |
546 | int i; | |
547 | ||
548 | for (i = 0; i < 3; i++) { | |
549 | if (!type[i]) | |
550 | break; | |
551 | ||
552 | switch (type[i]) { | |
553 | case 'r': | |
554 | attr->bp_type |= HW_BREAKPOINT_R; | |
555 | break; | |
556 | case 'w': | |
557 | attr->bp_type |= HW_BREAKPOINT_W; | |
558 | break; | |
559 | case 'x': | |
560 | attr->bp_type |= HW_BREAKPOINT_X; | |
561 | break; | |
562 | default: | |
563 | return EVT_FAILED; | |
564 | } | |
565 | } | |
566 | if (!attr->bp_type) /* Default */ | |
567 | attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; | |
568 | ||
569 | *strp = type + i; | |
570 | ||
571 | return EVT_HANDLED; | |
572 | } | |
573 | ||
574 | static enum event_result | |
575 | parse_breakpoint_event(const char **strp, struct perf_event_attr *attr) | |
576 | { | |
577 | const char *target; | |
578 | const char *type; | |
579 | char *endaddr; | |
580 | u64 addr; | |
581 | enum event_result err; | |
582 | ||
583 | target = strchr(*strp, ':'); | |
584 | if (!target) | |
585 | return EVT_FAILED; | |
586 | ||
587 | if (strncmp(*strp, "mem", target - *strp) != 0) | |
588 | return EVT_FAILED; | |
589 | ||
590 | target++; | |
591 | ||
592 | addr = strtoull(target, &endaddr, 0); | |
593 | if (target == endaddr) | |
594 | return EVT_FAILED; | |
595 | ||
596 | attr->bp_addr = addr; | |
597 | *strp = endaddr; | |
598 | ||
599 | type = strchr(target, ':'); | |
600 | ||
601 | /* If no type is defined, just rw as default */ | |
602 | if (!type) { | |
603 | attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; | |
604 | } else { | |
605 | err = parse_breakpoint_type(++type, strp, attr); | |
606 | if (err == EVT_FAILED) | |
607 | return EVT_FAILED; | |
608 | } | |
609 | ||
aa59a485 FW |
610 | /* |
611 | * We should find a nice way to override the access length | |
612 | * Provide some defaults for now | |
613 | */ | |
614 | if (attr->bp_type == HW_BREAKPOINT_X) | |
615 | attr->bp_len = sizeof(long); | |
616 | else | |
617 | attr->bp_len = HW_BREAKPOINT_LEN_4; | |
618 | ||
1b290d67 FW |
619 | attr->type = PERF_TYPE_BREAKPOINT; |
620 | ||
621 | return EVT_HANDLED; | |
622 | } | |
623 | ||
74d5b588 JSR |
624 | static int check_events(const char *str, unsigned int i) |
625 | { | |
61c45981 | 626 | int n; |
74d5b588 | 627 | |
61c45981 PM |
628 | n = strlen(event_symbols[i].symbol); |
629 | if (!strncmp(str, event_symbols[i].symbol, n)) | |
630 | return n; | |
631 | ||
632 | n = strlen(event_symbols[i].alias); | |
633 | if (n) | |
634 | if (!strncmp(str, event_symbols[i].alias, n)) | |
635 | return n; | |
74d5b588 JSR |
636 | return 0; |
637 | } | |
638 | ||
bcd3279f | 639 | static enum event_result |
cdd6c482 | 640 | parse_symbolic_event(const char **strp, struct perf_event_attr *attr) |
8ad8db37 | 641 | { |
61c45981 | 642 | const char *str = *strp; |
8ad8db37 | 643 | unsigned int i; |
61c45981 | 644 | int n; |
8ad8db37 | 645 | |
61c45981 PM |
646 | for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { |
647 | n = check_events(str, i); | |
648 | if (n > 0) { | |
649 | attr->type = event_symbols[i].type; | |
650 | attr->config = event_symbols[i].config; | |
651 | *strp = str + n; | |
bcd3279f | 652 | return EVT_HANDLED; |
61c45981 PM |
653 | } |
654 | } | |
bcd3279f | 655 | return EVT_FAILED; |
61c45981 PM |
656 | } |
657 | ||
bcd3279f | 658 | static enum event_result |
cdd6c482 | 659 | parse_raw_event(const char **strp, struct perf_event_attr *attr) |
61c45981 PM |
660 | { |
661 | const char *str = *strp; | |
662 | u64 config; | |
663 | int n; | |
a21ca2ca | 664 | |
61c45981 | 665 | if (*str != 'r') |
bcd3279f | 666 | return EVT_FAILED; |
61c45981 PM |
667 | n = hex2u64(str + 1, &config); |
668 | if (n > 0) { | |
669 | *strp = str + n + 1; | |
670 | attr->type = PERF_TYPE_RAW; | |
671 | attr->config = config; | |
bcd3279f | 672 | return EVT_HANDLED; |
a21ca2ca | 673 | } |
bcd3279f | 674 | return EVT_FAILED; |
61c45981 | 675 | } |
8ad8db37 | 676 | |
bcd3279f | 677 | static enum event_result |
cdd6c482 | 678 | parse_numeric_event(const char **strp, struct perf_event_attr *attr) |
61c45981 PM |
679 | { |
680 | const char *str = *strp; | |
681 | char *endp; | |
682 | unsigned long type; | |
683 | u64 config; | |
684 | ||
685 | type = strtoul(str, &endp, 0); | |
686 | if (endp > str && type < PERF_TYPE_MAX && *endp == ':') { | |
687 | str = endp + 1; | |
688 | config = strtoul(str, &endp, 0); | |
689 | if (endp > str) { | |
690 | attr->type = type; | |
691 | attr->config = config; | |
692 | *strp = endp; | |
bcd3279f | 693 | return EVT_HANDLED; |
a0055ae2 | 694 | } |
61c45981 | 695 | } |
bcd3279f | 696 | return EVT_FAILED; |
61c45981 PM |
697 | } |
698 | ||
bcd3279f | 699 | static enum event_result |
cdd6c482 | 700 | parse_event_modifier(const char **strp, struct perf_event_attr *attr) |
61c45981 PM |
701 | { |
702 | const char *str = *strp; | |
ab608344 PZ |
703 | int exclude = 0; |
704 | int eu = 0, ek = 0, eh = 0, precise = 0; | |
a21ca2ca | 705 | |
61c45981 | 706 | if (*str++ != ':') |
a21ca2ca | 707 | return 0; |
61c45981 | 708 | while (*str) { |
ab608344 PZ |
709 | if (*str == 'u') { |
710 | if (!exclude) | |
711 | exclude = eu = ek = eh = 1; | |
61c45981 | 712 | eu = 0; |
ab608344 PZ |
713 | } else if (*str == 'k') { |
714 | if (!exclude) | |
715 | exclude = eu = ek = eh = 1; | |
61c45981 | 716 | ek = 0; |
ab608344 PZ |
717 | } else if (*str == 'h') { |
718 | if (!exclude) | |
719 | exclude = eu = ek = eh = 1; | |
61c45981 | 720 | eh = 0; |
ab608344 PZ |
721 | } else if (*str == 'p') { |
722 | precise++; | |
723 | } else | |
61c45981 | 724 | break; |
ab608344 | 725 | |
61c45981 | 726 | ++str; |
5242519b | 727 | } |
61c45981 PM |
728 | if (str >= *strp + 2) { |
729 | *strp = str; | |
730 | attr->exclude_user = eu; | |
731 | attr->exclude_kernel = ek; | |
732 | attr->exclude_hv = eh; | |
ab608344 | 733 | attr->precise_ip = precise; |
61c45981 PM |
734 | return 1; |
735 | } | |
736 | return 0; | |
737 | } | |
8ad8db37 | 738 | |
61c45981 PM |
739 | /* |
740 | * Each event can have multiple symbolic names. | |
741 | * Symbolic names are (almost) exactly matched. | |
742 | */ | |
bcd3279f | 743 | static enum event_result |
17ea1b70 ACM |
744 | parse_event_symbols(const struct option *opt, const char **str, |
745 | struct perf_event_attr *attr) | |
61c45981 | 746 | { |
bcd3279f FW |
747 | enum event_result ret; |
748 | ||
17ea1b70 | 749 | ret = parse_tracepoint_event(opt, str, attr); |
bcd3279f FW |
750 | if (ret != EVT_FAILED) |
751 | goto modifier; | |
752 | ||
753 | ret = parse_raw_event(str, attr); | |
754 | if (ret != EVT_FAILED) | |
755 | goto modifier; | |
a21ca2ca | 756 | |
bcd3279f FW |
757 | ret = parse_numeric_event(str, attr); |
758 | if (ret != EVT_FAILED) | |
759 | goto modifier; | |
760 | ||
761 | ret = parse_symbolic_event(str, attr); | |
762 | if (ret != EVT_FAILED) | |
763 | goto modifier; | |
764 | ||
765 | ret = parse_generic_hw_event(str, attr); | |
766 | if (ret != EVT_FAILED) | |
767 | goto modifier; | |
768 | ||
1b290d67 FW |
769 | ret = parse_breakpoint_event(str, attr); |
770 | if (ret != EVT_FAILED) | |
771 | goto modifier; | |
772 | ||
85df6f68 MR |
773 | fprintf(stderr, "invalid or unsupported event: '%s'\n", *str); |
774 | fprintf(stderr, "Run 'perf list' for a list of valid events\n"); | |
bcd3279f FW |
775 | return EVT_FAILED; |
776 | ||
777 | modifier: | |
61c45981 | 778 | parse_event_modifier(str, attr); |
8ad8db37 | 779 | |
bcd3279f | 780 | return ret; |
8ad8db37 IM |
781 | } |
782 | ||
361c99a6 | 783 | int parse_events(const struct option *opt, const char *str, int unset __used) |
8ad8db37 | 784 | { |
361c99a6 | 785 | struct perf_evlist *evlist = *(struct perf_evlist **)opt->value; |
cdd6c482 | 786 | struct perf_event_attr attr; |
bcd3279f | 787 | enum event_result ret; |
f0c55bcf | 788 | const char *ostr; |
8ad8db37 | 789 | |
61c45981 | 790 | for (;;) { |
f0c55bcf | 791 | ostr = str; |
61c45981 | 792 | memset(&attr, 0, sizeof(attr)); |
17ea1b70 | 793 | ret = parse_event_symbols(opt, &str, &attr); |
bcd3279f | 794 | if (ret == EVT_FAILED) |
61c45981 | 795 | return -1; |
8ad8db37 | 796 | |
61c45981 PM |
797 | if (!(*str == 0 || *str == ',' || isspace(*str))) |
798 | return -1; | |
8ad8db37 | 799 | |
bcd3279f | 800 | if (ret != EVT_HANDLED_ALL) { |
69aad6f1 | 801 | struct perf_evsel *evsel; |
361c99a6 | 802 | evsel = perf_evsel__new(&attr, evlist->nr_entries); |
69aad6f1 ACM |
803 | if (evsel == NULL) |
804 | return -1; | |
361c99a6 | 805 | perf_evlist__add(evlist, evsel); |
f0c55bcf SE |
806 | |
807 | evsel->name = calloc(str - ostr + 1, 1); | |
808 | if (!evsel->name) | |
809 | return -1; | |
810 | strncpy(evsel->name, ostr, str - ostr); | |
bcd3279f | 811 | } |
8ad8db37 | 812 | |
61c45981 PM |
813 | if (*str == 0) |
814 | break; | |
815 | if (*str == ',') | |
816 | ++str; | |
817 | while (isspace(*str)) | |
818 | ++str; | |
8ad8db37 IM |
819 | } |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
361c99a6 | 824 | int parse_filter(const struct option *opt, const char *str, |
c171b552 LZ |
825 | int unset __used) |
826 | { | |
361c99a6 | 827 | struct perf_evlist *evlist = *(struct perf_evlist **)opt->value; |
69aad6f1 | 828 | struct perf_evsel *last = NULL; |
c171b552 | 829 | |
361c99a6 ACM |
830 | if (evlist->nr_entries > 0) |
831 | last = list_entry(evlist->entries.prev, struct perf_evsel, node); | |
69aad6f1 ACM |
832 | |
833 | if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) { | |
c171b552 LZ |
834 | fprintf(stderr, |
835 | "-F option should follow a -e tracepoint option\n"); | |
836 | return -1; | |
837 | } | |
838 | ||
69aad6f1 ACM |
839 | last->filter = strdup(str); |
840 | if (last->filter == NULL) { | |
c171b552 LZ |
841 | fprintf(stderr, "not enough memory to hold filter string\n"); |
842 | return -1; | |
843 | } | |
c171b552 LZ |
844 | |
845 | return 0; | |
846 | } | |
847 | ||
86847b62 | 848 | static const char * const event_type_descriptors[] = { |
86847b62 TG |
849 | "Hardware event", |
850 | "Software event", | |
851 | "Tracepoint event", | |
852 | "Hardware cache event", | |
41bdcb23 LW |
853 | "Raw hardware event descriptor", |
854 | "Hardware breakpoint", | |
86847b62 TG |
855 | }; |
856 | ||
f6bdafef JB |
857 | /* |
858 | * Print the events from <debugfs_mount_point>/tracing/events | |
859 | */ | |
860 | ||
861 | static void print_tracepoint_events(void) | |
862 | { | |
863 | DIR *sys_dir, *evt_dir; | |
864 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
f6bdafef | 865 | char evt_path[MAXPATHLEN]; |
725b1368 | 866 | char dir_path[MAXPATHLEN]; |
f6bdafef | 867 | |
549104f2 | 868 | if (debugfs_valid_mountpoint(debugfs_path)) |
f6bdafef JB |
869 | return; |
870 | ||
5beeded1 | 871 | sys_dir = opendir(debugfs_path); |
f6bdafef | 872 | if (!sys_dir) |
725b1368 | 873 | return; |
6b58e7f1 UD |
874 | |
875 | for_each_subsystem(sys_dir, sys_dirent, sys_next) { | |
725b1368 ED |
876 | |
877 | snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path, | |
878 | sys_dirent.d_name); | |
879 | evt_dir = opendir(dir_path); | |
880 | if (!evt_dir) | |
6b58e7f1 | 881 | continue; |
725b1368 | 882 | |
6b58e7f1 | 883 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { |
f6bdafef JB |
884 | snprintf(evt_path, MAXPATHLEN, "%s:%s", |
885 | sys_dirent.d_name, evt_dirent.d_name); | |
689d3018 | 886 | printf(" %-42s [%s]\n", evt_path, |
41bdcb23 | 887 | event_type_descriptors[PERF_TYPE_TRACEPOINT]); |
f6bdafef JB |
888 | } |
889 | closedir(evt_dir); | |
890 | } | |
f6bdafef JB |
891 | closedir(sys_dir); |
892 | } | |
893 | ||
20c457b8 TR |
894 | /* |
895 | * Check whether event is in <debugfs_mount_point>/tracing/events | |
896 | */ | |
897 | ||
898 | int is_valid_tracepoint(const char *event_string) | |
899 | { | |
900 | DIR *sys_dir, *evt_dir; | |
901 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
902 | char evt_path[MAXPATHLEN]; | |
903 | char dir_path[MAXPATHLEN]; | |
904 | ||
905 | if (debugfs_valid_mountpoint(debugfs_path)) | |
906 | return 0; | |
907 | ||
908 | sys_dir = opendir(debugfs_path); | |
909 | if (!sys_dir) | |
910 | return 0; | |
911 | ||
912 | for_each_subsystem(sys_dir, sys_dirent, sys_next) { | |
913 | ||
914 | snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path, | |
915 | sys_dirent.d_name); | |
916 | evt_dir = opendir(dir_path); | |
917 | if (!evt_dir) | |
918 | continue; | |
919 | ||
920 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { | |
921 | snprintf(evt_path, MAXPATHLEN, "%s:%s", | |
922 | sys_dirent.d_name, evt_dirent.d_name); | |
923 | if (!strcmp(evt_path, event_string)) { | |
924 | closedir(evt_dir); | |
925 | closedir(sys_dir); | |
926 | return 1; | |
927 | } | |
928 | } | |
929 | closedir(evt_dir); | |
930 | } | |
931 | closedir(sys_dir); | |
932 | return 0; | |
933 | } | |
934 | ||
8ad8db37 | 935 | /* |
86847b62 | 936 | * Print the help text for the event symbols: |
8ad8db37 | 937 | */ |
86847b62 | 938 | void print_events(void) |
8ad8db37 | 939 | { |
86847b62 | 940 | struct event_symbol *syms = event_symbols; |
73c24cb8 | 941 | unsigned int i, type, op, prev_type = -1; |
74d5b588 | 942 | char name[40]; |
8ad8db37 | 943 | |
689d3018 MR |
944 | printf("\n"); |
945 | printf("List of pre-defined events (to be used in -e):\n"); | |
8ad8db37 | 946 | |
86847b62 | 947 | for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) { |
41bdcb23 | 948 | type = syms->type; |
8ad8db37 | 949 | |
86847b62 | 950 | if (type != prev_type) |
689d3018 | 951 | printf("\n"); |
8ad8db37 | 952 | |
74d5b588 JSR |
953 | if (strlen(syms->alias)) |
954 | sprintf(name, "%s OR %s", syms->symbol, syms->alias); | |
955 | else | |
956 | strcpy(name, syms->symbol); | |
689d3018 | 957 | printf(" %-42s [%s]\n", name, |
86847b62 | 958 | event_type_descriptors[type]); |
8ad8db37 | 959 | |
86847b62 | 960 | prev_type = type; |
8ad8db37 IM |
961 | } |
962 | ||
689d3018 | 963 | printf("\n"); |
73c24cb8 JSR |
964 | for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { |
965 | for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { | |
966 | /* skip invalid cache type */ | |
967 | if (!is_cache_op_valid(type, op)) | |
968 | continue; | |
969 | ||
970 | for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { | |
689d3018 | 971 | printf(" %-42s [%s]\n", |
73c24cb8 | 972 | event_cache_name(type, op, i), |
41bdcb23 | 973 | event_type_descriptors[PERF_TYPE_HW_CACHE]); |
73c24cb8 JSR |
974 | } |
975 | } | |
976 | } | |
977 | ||
689d3018 | 978 | printf("\n"); |
41bdcb23 | 979 | printf(" %-42s [%s]\n", |
1cf4a063 ACM |
980 | "rNNN (see 'perf list --help' on how to encode it)", |
981 | event_type_descriptors[PERF_TYPE_RAW]); | |
689d3018 | 982 | printf("\n"); |
86847b62 | 983 | |
41bdcb23 LW |
984 | printf(" %-42s [%s]\n", |
985 | "mem:<addr>[:access]", | |
986 | event_type_descriptors[PERF_TYPE_BREAKPOINT]); | |
1b290d67 FW |
987 | printf("\n"); |
988 | ||
f6bdafef JB |
989 | print_tracepoint_events(); |
990 | ||
86847b62 | 991 | exit(129); |
8ad8db37 | 992 | } |