Commit | Line | Data |
---|---|---|
1b290d67 | 1 | #include "../../../include/linux/hw_breakpoint.h" |
8ad8db37 | 2 | #include "util.h" |
6b58e7f1 | 3 | #include "../perf.h" |
8ad8db37 IM |
4 | #include "parse-options.h" |
5 | #include "parse-events.h" | |
6 | #include "exec_cmd.h" | |
a0055ae2 | 7 | #include "string.h" |
5beeded1 | 8 | #include "cache.h" |
8755a8f2 | 9 | #include "header.h" |
549104f2 | 10 | #include "debugfs.h" |
8ad8db37 | 11 | |
c171b552 | 12 | int nr_counters; |
8ad8db37 | 13 | |
cdd6c482 | 14 | struct perf_event_attr attrs[MAX_COUNTERS]; |
c171b552 | 15 | char *filters[MAX_COUNTERS]; |
8ad8db37 IM |
16 | |
17 | struct event_symbol { | |
83a0944f IM |
18 | u8 type; |
19 | u64 config; | |
20 | const char *symbol; | |
21 | const char *alias; | |
8ad8db37 IM |
22 | }; |
23 | ||
bcd3279f FW |
24 | enum event_result { |
25 | EVT_FAILED, | |
26 | EVT_HANDLED, | |
27 | EVT_HANDLED_ALL | |
28 | }; | |
29 | ||
5beeded1 JB |
30 | char debugfs_path[MAXPATHLEN]; |
31 | ||
51e26842 JSR |
32 | #define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x |
33 | #define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x | |
a21ca2ca | 34 | |
8ad8db37 | 35 | static struct event_symbol event_symbols[] = { |
74d5b588 JSR |
36 | { CHW(CPU_CYCLES), "cpu-cycles", "cycles" }, |
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", "" }, | |
c0c22dbf | 46 | { CSW(PAGE_FAULTS), "page-faults", "faults" }, |
74d5b588 JSR |
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" }, | |
f7d79860 AB |
51 | { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" }, |
52 | { CSW(EMULATION_FAULTS), "emulation-faults", "" }, | |
8ad8db37 IM |
53 | }; |
54 | ||
cdd6c482 IM |
55 | #define __PERF_EVENT_FIELD(config, name) \ |
56 | ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) | |
5242519b | 57 | |
cdd6c482 IM |
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) | |
5242519b | 62 | |
83a0944f | 63 | static const char *hw_event_names[] = { |
8faf3b54 | 64 | "cycles", |
5242519b | 65 | "instructions", |
8faf3b54 IM |
66 | "cache-references", |
67 | "cache-misses", | |
5242519b | 68 | "branches", |
8faf3b54 IM |
69 | "branch-misses", |
70 | "bus-cycles", | |
5242519b IM |
71 | }; |
72 | ||
83a0944f | 73 | static const char *sw_event_names[] = { |
44175b6f IM |
74 | "cpu-clock-msecs", |
75 | "task-clock-msecs", | |
8faf3b54 IM |
76 | "page-faults", |
77 | "context-switches", | |
78 | "CPU-migrations", | |
79 | "minor-faults", | |
80 | "major-faults", | |
f7d79860 AB |
81 | "alignment-faults", |
82 | "emulation-faults", | |
5242519b IM |
83 | }; |
84 | ||
8326f44d IM |
85 | #define MAX_ALIASES 8 |
86 | ||
83a0944f | 87 | static const char *hw_cache[][MAX_ALIASES] = { |
9590b7ba AB |
88 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, |
89 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, | |
e5c59547 JSR |
90 | { "LLC", "L2" }, |
91 | { "dTLB", "d-tlb", "Data-TLB", }, | |
92 | { "iTLB", "i-tlb", "Instruction-TLB", }, | |
93 | { "branch", "branches", "bpu", "btb", "bpc", }, | |
8326f44d IM |
94 | }; |
95 | ||
83a0944f | 96 | static const char *hw_cache_op[][MAX_ALIASES] = { |
e5c59547 JSR |
97 | { "load", "loads", "read", }, |
98 | { "store", "stores", "write", }, | |
99 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, | |
8326f44d IM |
100 | }; |
101 | ||
83a0944f | 102 | static const char *hw_cache_result[][MAX_ALIASES] = { |
e5c59547 JSR |
103 | { "refs", "Reference", "ops", "access", }, |
104 | { "misses", "miss", }, | |
8326f44d IM |
105 | }; |
106 | ||
06813f6c JSR |
107 | #define C(x) PERF_COUNT_HW_CACHE_##x |
108 | #define CACHE_READ (1 << C(OP_READ)) | |
109 | #define CACHE_WRITE (1 << C(OP_WRITE)) | |
110 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) | |
111 | #define COP(x) (1 << x) | |
112 | ||
113 | /* | |
114 | * cache operartion stat | |
115 | * L1I : Read and prefetch only | |
116 | * ITLB and BPU : Read-only | |
117 | */ | |
118 | static unsigned long hw_cache_stat[C(MAX)] = { | |
119 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
120 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), | |
121 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
122 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
123 | [C(ITLB)] = (CACHE_READ), | |
124 | [C(BPU)] = (CACHE_READ), | |
125 | }; | |
126 | ||
6b58e7f1 | 127 | #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \ |
f6bdafef | 128 | while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \ |
6b58e7f1 | 129 | if (sys_dirent.d_type == DT_DIR && \ |
f6bdafef JB |
130 | (strcmp(sys_dirent.d_name, ".")) && \ |
131 | (strcmp(sys_dirent.d_name, ".."))) | |
132 | ||
ae07b63f PZ |
133 | static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir) |
134 | { | |
135 | char evt_path[MAXPATHLEN]; | |
136 | int fd; | |
137 | ||
138 | snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, | |
139 | sys_dir->d_name, evt_dir->d_name); | |
140 | fd = open(evt_path, O_RDONLY); | |
141 | if (fd < 0) | |
142 | return -EINVAL; | |
143 | close(fd); | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
6b58e7f1 | 148 | #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \ |
f6bdafef | 149 | while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \ |
6b58e7f1 | 150 | if (evt_dirent.d_type == DT_DIR && \ |
f6bdafef | 151 | (strcmp(evt_dirent.d_name, ".")) && \ |
ae07b63f PZ |
152 | (strcmp(evt_dirent.d_name, "..")) && \ |
153 | (!tp_event_has_id(&sys_dirent, &evt_dirent))) | |
f6bdafef | 154 | |
270bbbe8 | 155 | #define MAX_EVENT_LENGTH 512 |
f6bdafef | 156 | |
f6bdafef | 157 | |
1ef2ed10 | 158 | struct tracepoint_path *tracepoint_id_to_path(u64 config) |
f6bdafef | 159 | { |
1ef2ed10 | 160 | struct tracepoint_path *path = NULL; |
f6bdafef JB |
161 | DIR *sys_dir, *evt_dir; |
162 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
f6bdafef | 163 | char id_buf[4]; |
725b1368 | 164 | int fd; |
f6bdafef JB |
165 | u64 id; |
166 | char evt_path[MAXPATHLEN]; | |
725b1368 | 167 | char dir_path[MAXPATHLEN]; |
f6bdafef | 168 | |
549104f2 | 169 | if (debugfs_valid_mountpoint(debugfs_path)) |
1ef2ed10 | 170 | return NULL; |
f6bdafef | 171 | |
5beeded1 | 172 | sys_dir = opendir(debugfs_path); |
f6bdafef | 173 | if (!sys_dir) |
725b1368 | 174 | return NULL; |
6b58e7f1 UD |
175 | |
176 | for_each_subsystem(sys_dir, sys_dirent, sys_next) { | |
725b1368 ED |
177 | |
178 | snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path, | |
179 | sys_dirent.d_name); | |
180 | evt_dir = opendir(dir_path); | |
181 | if (!evt_dir) | |
6b58e7f1 | 182 | continue; |
725b1368 | 183 | |
6b58e7f1 | 184 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { |
725b1368 ED |
185 | |
186 | snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, | |
f6bdafef | 187 | evt_dirent.d_name); |
725b1368 | 188 | fd = open(evt_path, O_RDONLY); |
f6bdafef JB |
189 | if (fd < 0) |
190 | continue; | |
191 | if (read(fd, id_buf, sizeof(id_buf)) < 0) { | |
192 | close(fd); | |
193 | continue; | |
194 | } | |
195 | close(fd); | |
196 | id = atoll(id_buf); | |
197 | if (id == config) { | |
198 | closedir(evt_dir); | |
199 | closedir(sys_dir); | |
59b4caeb | 200 | path = zalloc(sizeof(*path)); |
1ef2ed10 FW |
201 | path->system = malloc(MAX_EVENT_LENGTH); |
202 | if (!path->system) { | |
203 | free(path); | |
204 | return NULL; | |
205 | } | |
206 | path->name = malloc(MAX_EVENT_LENGTH); | |
207 | if (!path->name) { | |
208 | free(path->system); | |
209 | free(path); | |
210 | return NULL; | |
211 | } | |
212 | strncpy(path->system, sys_dirent.d_name, | |
213 | MAX_EVENT_LENGTH); | |
214 | strncpy(path->name, evt_dirent.d_name, | |
215 | MAX_EVENT_LENGTH); | |
216 | return path; | |
f6bdafef JB |
217 | } |
218 | } | |
219 | closedir(evt_dir); | |
220 | } | |
221 | ||
f6bdafef | 222 | closedir(sys_dir); |
1ef2ed10 FW |
223 | return NULL; |
224 | } | |
225 | ||
226 | #define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1) | |
227 | static const char *tracepoint_id_to_name(u64 config) | |
228 | { | |
229 | static char buf[TP_PATH_LEN]; | |
230 | struct tracepoint_path *path; | |
231 | ||
232 | path = tracepoint_id_to_path(config); | |
233 | if (path) { | |
234 | snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name); | |
235 | free(path->name); | |
236 | free(path->system); | |
237 | free(path); | |
238 | } else | |
239 | snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown"); | |
240 | ||
241 | return buf; | |
f6bdafef JB |
242 | } |
243 | ||
06813f6c JSR |
244 | static int is_cache_op_valid(u8 cache_type, u8 cache_op) |
245 | { | |
246 | if (hw_cache_stat[cache_type] & COP(cache_op)) | |
247 | return 1; /* valid */ | |
248 | else | |
249 | return 0; /* invalid */ | |
250 | } | |
251 | ||
e5c59547 JSR |
252 | static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result) |
253 | { | |
254 | static char name[50]; | |
255 | ||
256 | if (cache_result) { | |
257 | sprintf(name, "%s-%s-%s", hw_cache[cache_type][0], | |
258 | hw_cache_op[cache_op][0], | |
259 | hw_cache_result[cache_result][0]); | |
260 | } else { | |
261 | sprintf(name, "%s-%s", hw_cache[cache_type][0], | |
262 | hw_cache_op[cache_op][1]); | |
263 | } | |
264 | ||
265 | return name; | |
266 | } | |
267 | ||
83a0944f | 268 | const char *event_name(int counter) |
5242519b | 269 | { |
9cffa8d5 | 270 | u64 config = attrs[counter].config; |
a21ca2ca | 271 | int type = attrs[counter].type; |
8f18aec5 PZ |
272 | |
273 | return __event_name(type, config); | |
274 | } | |
275 | ||
83a0944f | 276 | const char *__event_name(int type, u64 config) |
8f18aec5 | 277 | { |
5242519b IM |
278 | static char buf[32]; |
279 | ||
8f18aec5 | 280 | if (type == PERF_TYPE_RAW) { |
a21ca2ca | 281 | sprintf(buf, "raw 0x%llx", config); |
5242519b IM |
282 | return buf; |
283 | } | |
284 | ||
285 | switch (type) { | |
286 | case PERF_TYPE_HARDWARE: | |
f4dbfa8f | 287 | if (config < PERF_COUNT_HW_MAX) |
a21ca2ca | 288 | return hw_event_names[config]; |
5242519b IM |
289 | return "unknown-hardware"; |
290 | ||
8326f44d | 291 | case PERF_TYPE_HW_CACHE: { |
9cffa8d5 | 292 | u8 cache_type, cache_op, cache_result; |
8326f44d IM |
293 | |
294 | cache_type = (config >> 0) & 0xff; | |
295 | if (cache_type > PERF_COUNT_HW_CACHE_MAX) | |
296 | return "unknown-ext-hardware-cache-type"; | |
297 | ||
298 | cache_op = (config >> 8) & 0xff; | |
8faf3b54 IM |
299 | if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX) |
300 | return "unknown-ext-hardware-cache-op"; | |
8326f44d IM |
301 | |
302 | cache_result = (config >> 16) & 0xff; | |
8faf3b54 IM |
303 | if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX) |
304 | return "unknown-ext-hardware-cache-result"; | |
8326f44d | 305 | |
06813f6c JSR |
306 | if (!is_cache_op_valid(cache_type, cache_op)) |
307 | return "invalid-cache"; | |
8326f44d | 308 | |
e5c59547 | 309 | return event_cache_name(cache_type, cache_op, cache_result); |
8326f44d IM |
310 | } |
311 | ||
5242519b | 312 | case PERF_TYPE_SOFTWARE: |
f4dbfa8f | 313 | if (config < PERF_COUNT_SW_MAX) |
a21ca2ca | 314 | return sw_event_names[config]; |
5242519b IM |
315 | return "unknown-software"; |
316 | ||
f6bdafef JB |
317 | case PERF_TYPE_TRACEPOINT: |
318 | return tracepoint_id_to_name(config); | |
319 | ||
5242519b IM |
320 | default: |
321 | break; | |
322 | } | |
323 | ||
324 | return "unknown"; | |
325 | } | |
326 | ||
83a0944f | 327 | static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size) |
8326f44d IM |
328 | { |
329 | int i, j; | |
61c45981 | 330 | int n, longest = -1; |
8326f44d IM |
331 | |
332 | for (i = 0; i < size; i++) { | |
61c45981 PM |
333 | for (j = 0; j < MAX_ALIASES && names[i][j]; j++) { |
334 | n = strlen(names[i][j]); | |
335 | if (n > longest && !strncasecmp(*str, names[i][j], n)) | |
336 | longest = n; | |
337 | } | |
338 | if (longest > 0) { | |
339 | *str += longest; | |
340 | return i; | |
8326f44d IM |
341 | } |
342 | } | |
343 | ||
8953645f | 344 | return -1; |
8326f44d IM |
345 | } |
346 | ||
bcd3279f | 347 | static enum event_result |
cdd6c482 | 348 | parse_generic_hw_event(const char **str, struct perf_event_attr *attr) |
8326f44d | 349 | { |
61c45981 PM |
350 | const char *s = *str; |
351 | int cache_type = -1, cache_op = -1, cache_result = -1; | |
8326f44d | 352 | |
61c45981 | 353 | cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX); |
8326f44d IM |
354 | /* |
355 | * No fallback - if we cannot get a clear cache type | |
356 | * then bail out: | |
357 | */ | |
358 | if (cache_type == -1) | |
bcd3279f | 359 | return EVT_FAILED; |
61c45981 PM |
360 | |
361 | while ((cache_op == -1 || cache_result == -1) && *s == '-') { | |
362 | ++s; | |
363 | ||
364 | if (cache_op == -1) { | |
365 | cache_op = parse_aliases(&s, hw_cache_op, | |
366 | PERF_COUNT_HW_CACHE_OP_MAX); | |
367 | if (cache_op >= 0) { | |
368 | if (!is_cache_op_valid(cache_type, cache_op)) | |
369 | return 0; | |
370 | continue; | |
371 | } | |
372 | } | |
373 | ||
374 | if (cache_result == -1) { | |
375 | cache_result = parse_aliases(&s, hw_cache_result, | |
376 | PERF_COUNT_HW_CACHE_RESULT_MAX); | |
377 | if (cache_result >= 0) | |
378 | continue; | |
379 | } | |
380 | ||
381 | /* | |
382 | * Can't parse this as a cache op or result, so back up | |
383 | * to the '-'. | |
384 | */ | |
385 | --s; | |
386 | break; | |
387 | } | |
8326f44d | 388 | |
8326f44d IM |
389 | /* |
390 | * Fall back to reads: | |
391 | */ | |
8953645f IM |
392 | if (cache_op == -1) |
393 | cache_op = PERF_COUNT_HW_CACHE_OP_READ; | |
8326f44d | 394 | |
8326f44d IM |
395 | /* |
396 | * Fall back to accesses: | |
397 | */ | |
398 | if (cache_result == -1) | |
399 | cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; | |
400 | ||
401 | attr->config = cache_type | (cache_op << 8) | (cache_result << 16); | |
402 | attr->type = PERF_TYPE_HW_CACHE; | |
403 | ||
61c45981 | 404 | *str = s; |
bcd3279f FW |
405 | return EVT_HANDLED; |
406 | } | |
407 | ||
408 | static enum event_result | |
409 | parse_single_tracepoint_event(char *sys_name, | |
410 | const char *evt_name, | |
411 | unsigned int evt_length, | |
412 | char *flags, | |
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 | ||
421 | if (flags) { | |
1281a49b | 422 | if (!strncmp(flags, "record", strlen(flags))) { |
bcd3279f | 423 | attr->sample_type |= PERF_SAMPLE_RAW; |
1281a49b LZ |
424 | attr->sample_type |= PERF_SAMPLE_TIME; |
425 | attr->sample_type |= PERF_SAMPLE_CPU; | |
426 | } | |
bcd3279f FW |
427 | } |
428 | ||
429 | snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, | |
430 | sys_name, evt_name); | |
431 | ||
432 | fd = open(evt_path, O_RDONLY); | |
433 | if (fd < 0) | |
434 | return EVT_FAILED; | |
435 | ||
436 | if (read(fd, id_buf, sizeof(id_buf)) < 0) { | |
437 | close(fd); | |
438 | return EVT_FAILED; | |
439 | } | |
440 | ||
441 | close(fd); | |
442 | id = atoll(id_buf); | |
443 | attr->config = id; | |
444 | attr->type = PERF_TYPE_TRACEPOINT; | |
445 | *strp = evt_name + evt_length; | |
446 | ||
447 | return EVT_HANDLED; | |
8326f44d IM |
448 | } |
449 | ||
bcd3279f FW |
450 | /* sys + ':' + event + ':' + flags*/ |
451 | #define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128) | |
452 | static enum event_result | |
453 | parse_subsystem_tracepoint_event(char *sys_name, char *flags) | |
454 | { | |
455 | char evt_path[MAXPATHLEN]; | |
456 | struct dirent *evt_ent; | |
457 | DIR *evt_dir; | |
458 | ||
459 | snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name); | |
460 | evt_dir = opendir(evt_path); | |
461 | ||
462 | if (!evt_dir) { | |
463 | perror("Can't open event dir"); | |
464 | return EVT_FAILED; | |
465 | } | |
466 | ||
467 | while ((evt_ent = readdir(evt_dir))) { | |
468 | char event_opt[MAX_EVOPT_LEN + 1]; | |
469 | int len; | |
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 | ||
180570fd UD |
477 | len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name, |
478 | evt_ent->d_name, flags ? ":" : "", | |
479 | flags ?: ""); | |
bcd3279f FW |
480 | if (len < 0) |
481 | return EVT_FAILED; | |
482 | ||
bcd3279f FW |
483 | if (parse_events(NULL, event_opt, 0)) |
484 | return EVT_FAILED; | |
485 | } | |
486 | ||
487 | return EVT_HANDLED_ALL; | |
488 | } | |
489 | ||
490 | ||
491 | static enum event_result parse_tracepoint_event(const char **strp, | |
cdd6c482 | 492 | struct perf_event_attr *attr) |
f6bdafef JB |
493 | { |
494 | const char *evt_name; | |
3a9f131f | 495 | char *flags; |
f6bdafef | 496 | char sys_name[MAX_EVENT_LENGTH]; |
f6bdafef | 497 | unsigned int sys_length, evt_length; |
f6bdafef | 498 | |
549104f2 | 499 | if (debugfs_valid_mountpoint(debugfs_path)) |
f6bdafef JB |
500 | return 0; |
501 | ||
502 | evt_name = strchr(*strp, ':'); | |
503 | if (!evt_name) | |
bcd3279f | 504 | return EVT_FAILED; |
f6bdafef JB |
505 | |
506 | sys_length = evt_name - *strp; | |
507 | if (sys_length >= MAX_EVENT_LENGTH) | |
508 | return 0; | |
509 | ||
510 | strncpy(sys_name, *strp, sys_length); | |
511 | sys_name[sys_length] = '\0'; | |
512 | evt_name = evt_name + 1; | |
3a9f131f FW |
513 | |
514 | flags = strchr(evt_name, ':'); | |
515 | if (flags) { | |
1fc35b29 IM |
516 | /* split it out: */ |
517 | evt_name = strndup(evt_name, flags - evt_name); | |
3a9f131f | 518 | flags++; |
3a9f131f FW |
519 | } |
520 | ||
f6bdafef JB |
521 | evt_length = strlen(evt_name); |
522 | if (evt_length >= MAX_EVENT_LENGTH) | |
bcd3279f | 523 | return EVT_FAILED; |
f6bdafef | 524 | |
bcd3279f FW |
525 | if (!strcmp(evt_name, "*")) { |
526 | *strp = evt_name + evt_length; | |
527 | return parse_subsystem_tracepoint_event(sys_name, flags); | |
528 | } else | |
529 | return parse_single_tracepoint_event(sys_name, evt_name, | |
530 | evt_length, flags, | |
531 | attr, strp); | |
f6bdafef JB |
532 | } |
533 | ||
1b290d67 FW |
534 | static enum event_result |
535 | parse_breakpoint_type(const char *type, const char **strp, | |
536 | struct perf_event_attr *attr) | |
537 | { | |
538 | int i; | |
539 | ||
540 | for (i = 0; i < 3; i++) { | |
541 | if (!type[i]) | |
542 | break; | |
543 | ||
544 | switch (type[i]) { | |
545 | case 'r': | |
546 | attr->bp_type |= HW_BREAKPOINT_R; | |
547 | break; | |
548 | case 'w': | |
549 | attr->bp_type |= HW_BREAKPOINT_W; | |
550 | break; | |
551 | case 'x': | |
552 | attr->bp_type |= HW_BREAKPOINT_X; | |
553 | break; | |
554 | default: | |
555 | return EVT_FAILED; | |
556 | } | |
557 | } | |
558 | if (!attr->bp_type) /* Default */ | |
559 | attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; | |
560 | ||
561 | *strp = type + i; | |
562 | ||
563 | return EVT_HANDLED; | |
564 | } | |
565 | ||
566 | static enum event_result | |
567 | parse_breakpoint_event(const char **strp, struct perf_event_attr *attr) | |
568 | { | |
569 | const char *target; | |
570 | const char *type; | |
571 | char *endaddr; | |
572 | u64 addr; | |
573 | enum event_result err; | |
574 | ||
575 | target = strchr(*strp, ':'); | |
576 | if (!target) | |
577 | return EVT_FAILED; | |
578 | ||
579 | if (strncmp(*strp, "mem", target - *strp) != 0) | |
580 | return EVT_FAILED; | |
581 | ||
582 | target++; | |
583 | ||
584 | addr = strtoull(target, &endaddr, 0); | |
585 | if (target == endaddr) | |
586 | return EVT_FAILED; | |
587 | ||
588 | attr->bp_addr = addr; | |
589 | *strp = endaddr; | |
590 | ||
591 | type = strchr(target, ':'); | |
592 | ||
593 | /* If no type is defined, just rw as default */ | |
594 | if (!type) { | |
595 | attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; | |
596 | } else { | |
597 | err = parse_breakpoint_type(++type, strp, attr); | |
598 | if (err == EVT_FAILED) | |
599 | return EVT_FAILED; | |
600 | } | |
601 | ||
602 | /* We should find a nice way to override the access type */ | |
603 | attr->bp_len = HW_BREAKPOINT_LEN_4; | |
604 | attr->type = PERF_TYPE_BREAKPOINT; | |
605 | ||
606 | return EVT_HANDLED; | |
607 | } | |
608 | ||
74d5b588 JSR |
609 | static int check_events(const char *str, unsigned int i) |
610 | { | |
61c45981 | 611 | int n; |
74d5b588 | 612 | |
61c45981 PM |
613 | n = strlen(event_symbols[i].symbol); |
614 | if (!strncmp(str, event_symbols[i].symbol, n)) | |
615 | return n; | |
616 | ||
617 | n = strlen(event_symbols[i].alias); | |
618 | if (n) | |
619 | if (!strncmp(str, event_symbols[i].alias, n)) | |
620 | return n; | |
74d5b588 JSR |
621 | return 0; |
622 | } | |
623 | ||
bcd3279f | 624 | static enum event_result |
cdd6c482 | 625 | parse_symbolic_event(const char **strp, struct perf_event_attr *attr) |
8ad8db37 | 626 | { |
61c45981 | 627 | const char *str = *strp; |
8ad8db37 | 628 | unsigned int i; |
61c45981 | 629 | int n; |
8ad8db37 | 630 | |
61c45981 PM |
631 | for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { |
632 | n = check_events(str, i); | |
633 | if (n > 0) { | |
634 | attr->type = event_symbols[i].type; | |
635 | attr->config = event_symbols[i].config; | |
636 | *strp = str + n; | |
bcd3279f | 637 | return EVT_HANDLED; |
61c45981 PM |
638 | } |
639 | } | |
bcd3279f | 640 | return EVT_FAILED; |
61c45981 PM |
641 | } |
642 | ||
bcd3279f | 643 | static enum event_result |
cdd6c482 | 644 | parse_raw_event(const char **strp, struct perf_event_attr *attr) |
61c45981 PM |
645 | { |
646 | const char *str = *strp; | |
647 | u64 config; | |
648 | int n; | |
a21ca2ca | 649 | |
61c45981 | 650 | if (*str != 'r') |
bcd3279f | 651 | return EVT_FAILED; |
61c45981 PM |
652 | n = hex2u64(str + 1, &config); |
653 | if (n > 0) { | |
654 | *strp = str + n + 1; | |
655 | attr->type = PERF_TYPE_RAW; | |
656 | attr->config = config; | |
bcd3279f | 657 | return EVT_HANDLED; |
a21ca2ca | 658 | } |
bcd3279f | 659 | return EVT_FAILED; |
61c45981 | 660 | } |
8ad8db37 | 661 | |
bcd3279f | 662 | static enum event_result |
cdd6c482 | 663 | parse_numeric_event(const char **strp, struct perf_event_attr *attr) |
61c45981 PM |
664 | { |
665 | const char *str = *strp; | |
666 | char *endp; | |
667 | unsigned long type; | |
668 | u64 config; | |
669 | ||
670 | type = strtoul(str, &endp, 0); | |
671 | if (endp > str && type < PERF_TYPE_MAX && *endp == ':') { | |
672 | str = endp + 1; | |
673 | config = strtoul(str, &endp, 0); | |
674 | if (endp > str) { | |
675 | attr->type = type; | |
676 | attr->config = config; | |
677 | *strp = endp; | |
bcd3279f | 678 | return EVT_HANDLED; |
a0055ae2 | 679 | } |
61c45981 | 680 | } |
bcd3279f | 681 | return EVT_FAILED; |
61c45981 PM |
682 | } |
683 | ||
bcd3279f | 684 | static enum event_result |
cdd6c482 | 685 | parse_event_modifier(const char **strp, struct perf_event_attr *attr) |
61c45981 PM |
686 | { |
687 | const char *str = *strp; | |
688 | int eu = 1, ek = 1, eh = 1; | |
a21ca2ca | 689 | |
61c45981 | 690 | if (*str++ != ':') |
a21ca2ca | 691 | return 0; |
61c45981 PM |
692 | while (*str) { |
693 | if (*str == 'u') | |
694 | eu = 0; | |
695 | else if (*str == 'k') | |
696 | ek = 0; | |
697 | else if (*str == 'h') | |
698 | eh = 0; | |
699 | else | |
700 | break; | |
701 | ++str; | |
5242519b | 702 | } |
61c45981 PM |
703 | if (str >= *strp + 2) { |
704 | *strp = str; | |
705 | attr->exclude_user = eu; | |
706 | attr->exclude_kernel = ek; | |
707 | attr->exclude_hv = eh; | |
708 | return 1; | |
709 | } | |
710 | return 0; | |
711 | } | |
8ad8db37 | 712 | |
61c45981 PM |
713 | /* |
714 | * Each event can have multiple symbolic names. | |
715 | * Symbolic names are (almost) exactly matched. | |
716 | */ | |
bcd3279f | 717 | static enum event_result |
cdd6c482 | 718 | parse_event_symbols(const char **str, struct perf_event_attr *attr) |
61c45981 | 719 | { |
bcd3279f FW |
720 | enum event_result ret; |
721 | ||
722 | ret = parse_tracepoint_event(str, attr); | |
723 | if (ret != EVT_FAILED) | |
724 | goto modifier; | |
725 | ||
726 | ret = parse_raw_event(str, attr); | |
727 | if (ret != EVT_FAILED) | |
728 | goto modifier; | |
a21ca2ca | 729 | |
bcd3279f FW |
730 | ret = parse_numeric_event(str, attr); |
731 | if (ret != EVT_FAILED) | |
732 | goto modifier; | |
733 | ||
734 | ret = parse_symbolic_event(str, attr); | |
735 | if (ret != EVT_FAILED) | |
736 | goto modifier; | |
737 | ||
738 | ret = parse_generic_hw_event(str, attr); | |
739 | if (ret != EVT_FAILED) | |
740 | goto modifier; | |
741 | ||
1b290d67 FW |
742 | ret = parse_breakpoint_event(str, attr); |
743 | if (ret != EVT_FAILED) | |
744 | goto modifier; | |
745 | ||
85df6f68 MR |
746 | fprintf(stderr, "invalid or unsupported event: '%s'\n", *str); |
747 | fprintf(stderr, "Run 'perf list' for a list of valid events\n"); | |
bcd3279f FW |
748 | return EVT_FAILED; |
749 | ||
750 | modifier: | |
61c45981 | 751 | parse_event_modifier(str, attr); |
8ad8db37 | 752 | |
bcd3279f | 753 | return ret; |
8ad8db37 IM |
754 | } |
755 | ||
8755a8f2 AV |
756 | static void store_event_type(const char *orgname) |
757 | { | |
758 | char filename[PATH_MAX], *c; | |
759 | FILE *file; | |
760 | int id; | |
761 | ||
63c9e01e AC |
762 | sprintf(filename, "%s/", debugfs_path); |
763 | strncat(filename, orgname, strlen(orgname)); | |
764 | strcat(filename, "/id"); | |
765 | ||
8755a8f2 AV |
766 | c = strchr(filename, ':'); |
767 | if (c) | |
768 | *c = '/'; | |
769 | ||
770 | file = fopen(filename, "r"); | |
771 | if (!file) | |
772 | return; | |
773 | if (fscanf(file, "%i", &id) < 1) | |
774 | die("cannot store event ID"); | |
775 | fclose(file); | |
776 | perf_header__push_event(id, orgname); | |
777 | } | |
778 | ||
f37a291c | 779 | int parse_events(const struct option *opt __used, const char *str, int unset __used) |
8ad8db37 | 780 | { |
cdd6c482 | 781 | struct perf_event_attr attr; |
bcd3279f | 782 | enum event_result ret; |
8ad8db37 | 783 | |
8755a8f2 AV |
784 | if (strchr(str, ':')) |
785 | store_event_type(str); | |
786 | ||
61c45981 PM |
787 | for (;;) { |
788 | if (nr_counters == MAX_COUNTERS) | |
789 | return -1; | |
790 | ||
791 | memset(&attr, 0, sizeof(attr)); | |
bcd3279f FW |
792 | ret = parse_event_symbols(&str, &attr); |
793 | if (ret == EVT_FAILED) | |
61c45981 | 794 | return -1; |
8ad8db37 | 795 | |
61c45981 PM |
796 | if (!(*str == 0 || *str == ',' || isspace(*str))) |
797 | return -1; | |
8ad8db37 | 798 | |
bcd3279f FW |
799 | if (ret != EVT_HANDLED_ALL) { |
800 | attrs[nr_counters] = attr; | |
801 | nr_counters++; | |
802 | } | |
8ad8db37 | 803 | |
61c45981 PM |
804 | if (*str == 0) |
805 | break; | |
806 | if (*str == ',') | |
807 | ++str; | |
808 | while (isspace(*str)) | |
809 | ++str; | |
8ad8db37 IM |
810 | } |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
c171b552 LZ |
815 | int parse_filter(const struct option *opt __used, const char *str, |
816 | int unset __used) | |
817 | { | |
818 | int i = nr_counters - 1; | |
819 | int len = strlen(str); | |
820 | ||
821 | if (i < 0 || attrs[i].type != PERF_TYPE_TRACEPOINT) { | |
822 | fprintf(stderr, | |
823 | "-F option should follow a -e tracepoint option\n"); | |
824 | return -1; | |
825 | } | |
826 | ||
827 | filters[i] = malloc(len + 1); | |
828 | if (!filters[i]) { | |
829 | fprintf(stderr, "not enough memory to hold filter string\n"); | |
830 | return -1; | |
831 | } | |
832 | strcpy(filters[i], str); | |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
86847b62 TG |
837 | static const char * const event_type_descriptors[] = { |
838 | "", | |
839 | "Hardware event", | |
840 | "Software event", | |
841 | "Tracepoint event", | |
842 | "Hardware cache event", | |
843 | }; | |
844 | ||
f6bdafef JB |
845 | /* |
846 | * Print the events from <debugfs_mount_point>/tracing/events | |
847 | */ | |
848 | ||
849 | static void print_tracepoint_events(void) | |
850 | { | |
851 | DIR *sys_dir, *evt_dir; | |
852 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
f6bdafef | 853 | char evt_path[MAXPATHLEN]; |
725b1368 | 854 | char dir_path[MAXPATHLEN]; |
f6bdafef | 855 | |
549104f2 | 856 | if (debugfs_valid_mountpoint(debugfs_path)) |
f6bdafef JB |
857 | return; |
858 | ||
5beeded1 | 859 | sys_dir = opendir(debugfs_path); |
f6bdafef | 860 | if (!sys_dir) |
725b1368 | 861 | return; |
6b58e7f1 UD |
862 | |
863 | for_each_subsystem(sys_dir, sys_dirent, sys_next) { | |
725b1368 ED |
864 | |
865 | snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path, | |
866 | sys_dirent.d_name); | |
867 | evt_dir = opendir(dir_path); | |
868 | if (!evt_dir) | |
6b58e7f1 | 869 | continue; |
725b1368 | 870 | |
6b58e7f1 | 871 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { |
f6bdafef JB |
872 | snprintf(evt_path, MAXPATHLEN, "%s:%s", |
873 | sys_dirent.d_name, evt_dirent.d_name); | |
689d3018 | 874 | printf(" %-42s [%s]\n", evt_path, |
f6bdafef JB |
875 | event_type_descriptors[PERF_TYPE_TRACEPOINT+1]); |
876 | } | |
877 | closedir(evt_dir); | |
878 | } | |
f6bdafef JB |
879 | closedir(sys_dir); |
880 | } | |
881 | ||
8ad8db37 | 882 | /* |
86847b62 | 883 | * Print the help text for the event symbols: |
8ad8db37 | 884 | */ |
86847b62 | 885 | void print_events(void) |
8ad8db37 | 886 | { |
86847b62 | 887 | struct event_symbol *syms = event_symbols; |
73c24cb8 | 888 | unsigned int i, type, op, prev_type = -1; |
74d5b588 | 889 | char name[40]; |
8ad8db37 | 890 | |
689d3018 MR |
891 | printf("\n"); |
892 | printf("List of pre-defined events (to be used in -e):\n"); | |
8ad8db37 | 893 | |
86847b62 TG |
894 | for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) { |
895 | type = syms->type + 1; | |
23cdb5d5 | 896 | if (type >= ARRAY_SIZE(event_type_descriptors)) |
86847b62 | 897 | type = 0; |
8ad8db37 | 898 | |
86847b62 | 899 | if (type != prev_type) |
689d3018 | 900 | printf("\n"); |
8ad8db37 | 901 | |
74d5b588 JSR |
902 | if (strlen(syms->alias)) |
903 | sprintf(name, "%s OR %s", syms->symbol, syms->alias); | |
904 | else | |
905 | strcpy(name, syms->symbol); | |
689d3018 | 906 | printf(" %-42s [%s]\n", name, |
86847b62 | 907 | event_type_descriptors[type]); |
8ad8db37 | 908 | |
86847b62 | 909 | prev_type = type; |
8ad8db37 IM |
910 | } |
911 | ||
689d3018 | 912 | printf("\n"); |
73c24cb8 JSR |
913 | for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { |
914 | for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { | |
915 | /* skip invalid cache type */ | |
916 | if (!is_cache_op_valid(type, op)) | |
917 | continue; | |
918 | ||
919 | for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { | |
689d3018 | 920 | printf(" %-42s [%s]\n", |
73c24cb8 JSR |
921 | event_cache_name(type, op, i), |
922 | event_type_descriptors[4]); | |
923 | } | |
924 | } | |
925 | } | |
926 | ||
689d3018 MR |
927 | printf("\n"); |
928 | printf(" %-42s [raw hardware event descriptor]\n", | |
86847b62 | 929 | "rNNN"); |
689d3018 | 930 | printf("\n"); |
86847b62 | 931 | |
1b290d67 FW |
932 | printf(" %-42s [hardware breakpoint]\n", "mem:<addr>[:access]"); |
933 | printf("\n"); | |
934 | ||
f6bdafef JB |
935 | print_tracepoint_events(); |
936 | ||
86847b62 | 937 | exit(129); |
8ad8db37 | 938 | } |