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Commit | Line | Data |
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8ad8db37 IM |
1 | |
2 | #include "../perf.h" | |
3 | #include "util.h" | |
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" |
8ad8db37 | 9 | |
8326f44d IM |
10 | extern char *strcasestr(const char *haystack, const char *needle); |
11 | ||
a21ca2ca | 12 | int nr_counters; |
8ad8db37 | 13 | |
a21ca2ca | 14 | struct perf_counter_attr attrs[MAX_COUNTERS]; |
8ad8db37 IM |
15 | |
16 | struct event_symbol { | |
83a0944f IM |
17 | u8 type; |
18 | u64 config; | |
19 | const char *symbol; | |
20 | const char *alias; | |
8ad8db37 IM |
21 | }; |
22 | ||
5beeded1 JB |
23 | char debugfs_path[MAXPATHLEN]; |
24 | ||
51e26842 JSR |
25 | #define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x |
26 | #define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x | |
a21ca2ca | 27 | |
8ad8db37 | 28 | static struct event_symbol event_symbols[] = { |
74d5b588 JSR |
29 | { CHW(CPU_CYCLES), "cpu-cycles", "cycles" }, |
30 | { CHW(INSTRUCTIONS), "instructions", "" }, | |
31 | { CHW(CACHE_REFERENCES), "cache-references", "" }, | |
32 | { CHW(CACHE_MISSES), "cache-misses", "" }, | |
33 | { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" }, | |
34 | { CHW(BRANCH_MISSES), "branch-misses", "" }, | |
35 | { CHW(BUS_CYCLES), "bus-cycles", "" }, | |
36 | ||
37 | { CSW(CPU_CLOCK), "cpu-clock", "" }, | |
38 | { CSW(TASK_CLOCK), "task-clock", "" }, | |
c0c22dbf | 39 | { CSW(PAGE_FAULTS), "page-faults", "faults" }, |
74d5b588 JSR |
40 | { CSW(PAGE_FAULTS_MIN), "minor-faults", "" }, |
41 | { CSW(PAGE_FAULTS_MAJ), "major-faults", "" }, | |
42 | { CSW(CONTEXT_SWITCHES), "context-switches", "cs" }, | |
43 | { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" }, | |
8ad8db37 IM |
44 | }; |
45 | ||
5242519b IM |
46 | #define __PERF_COUNTER_FIELD(config, name) \ |
47 | ((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT) | |
48 | ||
49 | #define PERF_COUNTER_RAW(config) __PERF_COUNTER_FIELD(config, RAW) | |
50 | #define PERF_COUNTER_CONFIG(config) __PERF_COUNTER_FIELD(config, CONFIG) | |
51 | #define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE) | |
52 | #define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT) | |
53 | ||
83a0944f | 54 | static const char *hw_event_names[] = { |
8faf3b54 | 55 | "cycles", |
5242519b | 56 | "instructions", |
8faf3b54 IM |
57 | "cache-references", |
58 | "cache-misses", | |
5242519b | 59 | "branches", |
8faf3b54 IM |
60 | "branch-misses", |
61 | "bus-cycles", | |
5242519b IM |
62 | }; |
63 | ||
83a0944f | 64 | static const char *sw_event_names[] = { |
44175b6f IM |
65 | "cpu-clock-msecs", |
66 | "task-clock-msecs", | |
8faf3b54 IM |
67 | "page-faults", |
68 | "context-switches", | |
69 | "CPU-migrations", | |
70 | "minor-faults", | |
71 | "major-faults", | |
5242519b IM |
72 | }; |
73 | ||
8326f44d IM |
74 | #define MAX_ALIASES 8 |
75 | ||
83a0944f | 76 | static const char *hw_cache[][MAX_ALIASES] = { |
9590b7ba AB |
77 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, |
78 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, | |
e5c59547 JSR |
79 | { "LLC", "L2" }, |
80 | { "dTLB", "d-tlb", "Data-TLB", }, | |
81 | { "iTLB", "i-tlb", "Instruction-TLB", }, | |
82 | { "branch", "branches", "bpu", "btb", "bpc", }, | |
8326f44d IM |
83 | }; |
84 | ||
83a0944f | 85 | static const char *hw_cache_op[][MAX_ALIASES] = { |
e5c59547 JSR |
86 | { "load", "loads", "read", }, |
87 | { "store", "stores", "write", }, | |
88 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, | |
8326f44d IM |
89 | }; |
90 | ||
83a0944f | 91 | static const char *hw_cache_result[][MAX_ALIASES] = { |
e5c59547 JSR |
92 | { "refs", "Reference", "ops", "access", }, |
93 | { "misses", "miss", }, | |
8326f44d IM |
94 | }; |
95 | ||
06813f6c JSR |
96 | #define C(x) PERF_COUNT_HW_CACHE_##x |
97 | #define CACHE_READ (1 << C(OP_READ)) | |
98 | #define CACHE_WRITE (1 << C(OP_WRITE)) | |
99 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) | |
100 | #define COP(x) (1 << x) | |
101 | ||
102 | /* | |
103 | * cache operartion stat | |
104 | * L1I : Read and prefetch only | |
105 | * ITLB and BPU : Read-only | |
106 | */ | |
107 | static unsigned long hw_cache_stat[C(MAX)] = { | |
108 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
109 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), | |
110 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
111 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
112 | [C(ITLB)] = (CACHE_READ), | |
113 | [C(BPU)] = (CACHE_READ), | |
114 | }; | |
115 | ||
f6bdafef JB |
116 | #define for_each_subsystem(sys_dir, sys_dirent, sys_next, file, st) \ |
117 | while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \ | |
5beeded1 JB |
118 | if (snprintf(file, MAXPATHLEN, "%s/%s", debugfs_path, \ |
119 | sys_dirent.d_name) && \ | |
f6bdafef JB |
120 | (!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \ |
121 | (strcmp(sys_dirent.d_name, ".")) && \ | |
122 | (strcmp(sys_dirent.d_name, ".."))) | |
123 | ||
ae07b63f PZ |
124 | static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir) |
125 | { | |
126 | char evt_path[MAXPATHLEN]; | |
127 | int fd; | |
128 | ||
129 | snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, | |
130 | sys_dir->d_name, evt_dir->d_name); | |
131 | fd = open(evt_path, O_RDONLY); | |
132 | if (fd < 0) | |
133 | return -EINVAL; | |
134 | close(fd); | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
f6bdafef JB |
139 | #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, file, st) \ |
140 | while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \ | |
5beeded1 JB |
141 | if (snprintf(file, MAXPATHLEN, "%s/%s/%s", debugfs_path, \ |
142 | sys_dirent.d_name, evt_dirent.d_name) && \ | |
f6bdafef JB |
143 | (!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \ |
144 | (strcmp(evt_dirent.d_name, ".")) && \ | |
ae07b63f PZ |
145 | (strcmp(evt_dirent.d_name, "..")) && \ |
146 | (!tp_event_has_id(&sys_dirent, &evt_dirent))) | |
f6bdafef JB |
147 | |
148 | #define MAX_EVENT_LENGTH 30 | |
149 | ||
5beeded1 | 150 | int valid_debugfs_mount(const char *debugfs) |
f6bdafef JB |
151 | { |
152 | struct statfs st_fs; | |
153 | ||
5beeded1 | 154 | if (statfs(debugfs, &st_fs) < 0) |
f6bdafef JB |
155 | return -ENOENT; |
156 | else if (st_fs.f_type != (long) DEBUGFS_MAGIC) | |
157 | return -ENOENT; | |
158 | return 0; | |
159 | } | |
160 | ||
1ef2ed10 | 161 | struct tracepoint_path *tracepoint_id_to_path(u64 config) |
f6bdafef | 162 | { |
1ef2ed10 | 163 | struct tracepoint_path *path = NULL; |
f6bdafef JB |
164 | DIR *sys_dir, *evt_dir; |
165 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
166 | struct stat st; | |
167 | char id_buf[4]; | |
168 | int fd; | |
169 | u64 id; | |
170 | char evt_path[MAXPATHLEN]; | |
171 | ||
5beeded1 | 172 | if (valid_debugfs_mount(debugfs_path)) |
1ef2ed10 | 173 | return NULL; |
f6bdafef | 174 | |
5beeded1 | 175 | sys_dir = opendir(debugfs_path); |
f6bdafef JB |
176 | if (!sys_dir) |
177 | goto cleanup; | |
178 | ||
179 | for_each_subsystem(sys_dir, sys_dirent, sys_next, evt_path, st) { | |
180 | evt_dir = opendir(evt_path); | |
181 | if (!evt_dir) | |
182 | goto cleanup; | |
183 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, | |
184 | evt_path, st) { | |
185 | snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", | |
5beeded1 | 186 | debugfs_path, sys_dirent.d_name, |
f6bdafef JB |
187 | evt_dirent.d_name); |
188 | fd = open(evt_path, O_RDONLY); | |
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); | |
1ef2ed10 FW |
200 | path = calloc(1, sizeof(path)); |
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 | ||
222 | cleanup: | |
223 | closedir(sys_dir); | |
1ef2ed10 FW |
224 | return NULL; |
225 | } | |
226 | ||
227 | #define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1) | |
228 | static const char *tracepoint_id_to_name(u64 config) | |
229 | { | |
230 | static char buf[TP_PATH_LEN]; | |
231 | struct tracepoint_path *path; | |
232 | ||
233 | path = tracepoint_id_to_path(config); | |
234 | if (path) { | |
235 | snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name); | |
236 | free(path->name); | |
237 | free(path->system); | |
238 | free(path); | |
239 | } else | |
240 | snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown"); | |
241 | ||
242 | return buf; | |
f6bdafef JB |
243 | } |
244 | ||
06813f6c JSR |
245 | static int is_cache_op_valid(u8 cache_type, u8 cache_op) |
246 | { | |
247 | if (hw_cache_stat[cache_type] & COP(cache_op)) | |
248 | return 1; /* valid */ | |
249 | else | |
250 | return 0; /* invalid */ | |
251 | } | |
252 | ||
e5c59547 JSR |
253 | static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result) |
254 | { | |
255 | static char name[50]; | |
256 | ||
257 | if (cache_result) { | |
258 | sprintf(name, "%s-%s-%s", hw_cache[cache_type][0], | |
259 | hw_cache_op[cache_op][0], | |
260 | hw_cache_result[cache_result][0]); | |
261 | } else { | |
262 | sprintf(name, "%s-%s", hw_cache[cache_type][0], | |
263 | hw_cache_op[cache_op][1]); | |
264 | } | |
265 | ||
266 | return name; | |
267 | } | |
268 | ||
83a0944f | 269 | const char *event_name(int counter) |
5242519b | 270 | { |
9cffa8d5 | 271 | u64 config = attrs[counter].config; |
a21ca2ca | 272 | int type = attrs[counter].type; |
8f18aec5 PZ |
273 | |
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) { |
a21ca2ca | 282 | sprintf(buf, "raw 0x%llx", 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 | ||
c0c22dbf | 348 | static int |
61c45981 | 349 | parse_generic_hw_event(const char **str, struct perf_counter_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) | |
61c45981 PM |
360 | return 0; |
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 PM |
405 | *str = s; |
406 | return 1; | |
8326f44d IM |
407 | } |
408 | ||
f6bdafef JB |
409 | static int parse_tracepoint_event(const char **strp, |
410 | struct perf_counter_attr *attr) | |
411 | { | |
412 | const char *evt_name; | |
3a9f131f | 413 | char *flags; |
f6bdafef JB |
414 | char sys_name[MAX_EVENT_LENGTH]; |
415 | char id_buf[4]; | |
416 | int fd; | |
417 | unsigned int sys_length, evt_length; | |
418 | u64 id; | |
419 | char evt_path[MAXPATHLEN]; | |
420 | ||
5beeded1 | 421 | if (valid_debugfs_mount(debugfs_path)) |
f6bdafef JB |
422 | return 0; |
423 | ||
424 | evt_name = strchr(*strp, ':'); | |
425 | if (!evt_name) | |
426 | return 0; | |
427 | ||
428 | sys_length = evt_name - *strp; | |
429 | if (sys_length >= MAX_EVENT_LENGTH) | |
430 | return 0; | |
431 | ||
432 | strncpy(sys_name, *strp, sys_length); | |
433 | sys_name[sys_length] = '\0'; | |
434 | evt_name = evt_name + 1; | |
3a9f131f FW |
435 | |
436 | flags = strchr(evt_name, ':'); | |
437 | if (flags) { | |
438 | *flags = '\0'; | |
439 | flags++; | |
440 | if (!strncmp(flags, "record", strlen(flags))) | |
441 | attr->sample_type |= PERF_SAMPLE_RAW; | |
442 | } | |
443 | ||
f6bdafef JB |
444 | evt_length = strlen(evt_name); |
445 | if (evt_length >= MAX_EVENT_LENGTH) | |
446 | return 0; | |
447 | ||
5beeded1 JB |
448 | snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, |
449 | sys_name, evt_name); | |
f6bdafef JB |
450 | fd = open(evt_path, O_RDONLY); |
451 | if (fd < 0) | |
452 | return 0; | |
453 | ||
454 | if (read(fd, id_buf, sizeof(id_buf)) < 0) { | |
455 | close(fd); | |
456 | return 0; | |
457 | } | |
458 | close(fd); | |
459 | id = atoll(id_buf); | |
460 | attr->config = id; | |
461 | attr->type = PERF_TYPE_TRACEPOINT; | |
462 | *strp = evt_name + evt_length; | |
463 | return 1; | |
464 | } | |
465 | ||
74d5b588 JSR |
466 | static int check_events(const char *str, unsigned int i) |
467 | { | |
61c45981 | 468 | int n; |
74d5b588 | 469 | |
61c45981 PM |
470 | n = strlen(event_symbols[i].symbol); |
471 | if (!strncmp(str, event_symbols[i].symbol, n)) | |
472 | return n; | |
473 | ||
474 | n = strlen(event_symbols[i].alias); | |
475 | if (n) | |
476 | if (!strncmp(str, event_symbols[i].alias, n)) | |
477 | return n; | |
74d5b588 JSR |
478 | return 0; |
479 | } | |
480 | ||
61c45981 PM |
481 | static int |
482 | parse_symbolic_event(const char **strp, struct perf_counter_attr *attr) | |
8ad8db37 | 483 | { |
61c45981 | 484 | const char *str = *strp; |
8ad8db37 | 485 | unsigned int i; |
61c45981 | 486 | int n; |
8ad8db37 | 487 | |
61c45981 PM |
488 | for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { |
489 | n = check_events(str, i); | |
490 | if (n > 0) { | |
491 | attr->type = event_symbols[i].type; | |
492 | attr->config = event_symbols[i].config; | |
493 | *strp = str + n; | |
494 | return 1; | |
495 | } | |
496 | } | |
497 | return 0; | |
498 | } | |
499 | ||
500 | static int parse_raw_event(const char **strp, struct perf_counter_attr *attr) | |
501 | { | |
502 | const char *str = *strp; | |
503 | u64 config; | |
504 | int n; | |
a21ca2ca | 505 | |
61c45981 | 506 | if (*str != 'r') |
a21ca2ca | 507 | return 0; |
61c45981 PM |
508 | n = hex2u64(str + 1, &config); |
509 | if (n > 0) { | |
510 | *strp = str + n + 1; | |
511 | attr->type = PERF_TYPE_RAW; | |
512 | attr->config = config; | |
513 | return 1; | |
a21ca2ca | 514 | } |
61c45981 PM |
515 | return 0; |
516 | } | |
8ad8db37 | 517 | |
61c45981 PM |
518 | static int |
519 | parse_numeric_event(const char **strp, struct perf_counter_attr *attr) | |
520 | { | |
521 | const char *str = *strp; | |
522 | char *endp; | |
523 | unsigned long type; | |
524 | u64 config; | |
525 | ||
526 | type = strtoul(str, &endp, 0); | |
527 | if (endp > str && type < PERF_TYPE_MAX && *endp == ':') { | |
528 | str = endp + 1; | |
529 | config = strtoul(str, &endp, 0); | |
530 | if (endp > str) { | |
531 | attr->type = type; | |
532 | attr->config = config; | |
533 | *strp = endp; | |
534 | return 1; | |
a0055ae2 | 535 | } |
61c45981 PM |
536 | } |
537 | return 0; | |
538 | } | |
539 | ||
540 | static int | |
541 | parse_event_modifier(const char **strp, struct perf_counter_attr *attr) | |
542 | { | |
543 | const char *str = *strp; | |
544 | int eu = 1, ek = 1, eh = 1; | |
a21ca2ca | 545 | |
61c45981 | 546 | if (*str++ != ':') |
a21ca2ca | 547 | return 0; |
61c45981 PM |
548 | while (*str) { |
549 | if (*str == 'u') | |
550 | eu = 0; | |
551 | else if (*str == 'k') | |
552 | ek = 0; | |
553 | else if (*str == 'h') | |
554 | eh = 0; | |
555 | else | |
556 | break; | |
557 | ++str; | |
5242519b | 558 | } |
61c45981 PM |
559 | if (str >= *strp + 2) { |
560 | *strp = str; | |
561 | attr->exclude_user = eu; | |
562 | attr->exclude_kernel = ek; | |
563 | attr->exclude_hv = eh; | |
564 | return 1; | |
565 | } | |
566 | return 0; | |
567 | } | |
8ad8db37 | 568 | |
61c45981 PM |
569 | /* |
570 | * Each event can have multiple symbolic names. | |
571 | * Symbolic names are (almost) exactly matched. | |
572 | */ | |
573 | static int parse_event_symbols(const char **str, struct perf_counter_attr *attr) | |
574 | { | |
f6bdafef JB |
575 | if (!(parse_tracepoint_event(str, attr) || |
576 | parse_raw_event(str, attr) || | |
61c45981 PM |
577 | parse_numeric_event(str, attr) || |
578 | parse_symbolic_event(str, attr) || | |
579 | parse_generic_hw_event(str, attr))) | |
580 | return 0; | |
a21ca2ca | 581 | |
61c45981 | 582 | parse_event_modifier(str, attr); |
8ad8db37 | 583 | |
61c45981 | 584 | return 1; |
8ad8db37 IM |
585 | } |
586 | ||
f37a291c | 587 | int parse_events(const struct option *opt __used, const char *str, int unset __used) |
8ad8db37 | 588 | { |
a21ca2ca | 589 | struct perf_counter_attr attr; |
8ad8db37 | 590 | |
61c45981 PM |
591 | for (;;) { |
592 | if (nr_counters == MAX_COUNTERS) | |
593 | return -1; | |
594 | ||
595 | memset(&attr, 0, sizeof(attr)); | |
596 | if (!parse_event_symbols(&str, &attr)) | |
597 | return -1; | |
8ad8db37 | 598 | |
61c45981 PM |
599 | if (!(*str == 0 || *str == ',' || isspace(*str))) |
600 | return -1; | |
8ad8db37 | 601 | |
61c45981 PM |
602 | attrs[nr_counters] = attr; |
603 | nr_counters++; | |
8ad8db37 | 604 | |
61c45981 PM |
605 | if (*str == 0) |
606 | break; | |
607 | if (*str == ',') | |
608 | ++str; | |
609 | while (isspace(*str)) | |
610 | ++str; | |
8ad8db37 IM |
611 | } |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
86847b62 TG |
616 | static const char * const event_type_descriptors[] = { |
617 | "", | |
618 | "Hardware event", | |
619 | "Software event", | |
620 | "Tracepoint event", | |
621 | "Hardware cache event", | |
622 | }; | |
623 | ||
f6bdafef JB |
624 | /* |
625 | * Print the events from <debugfs_mount_point>/tracing/events | |
626 | */ | |
627 | ||
628 | static void print_tracepoint_events(void) | |
629 | { | |
630 | DIR *sys_dir, *evt_dir; | |
631 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
632 | struct stat st; | |
633 | char evt_path[MAXPATHLEN]; | |
634 | ||
5beeded1 | 635 | if (valid_debugfs_mount(debugfs_path)) |
f6bdafef JB |
636 | return; |
637 | ||
5beeded1 | 638 | sys_dir = opendir(debugfs_path); |
f6bdafef JB |
639 | if (!sys_dir) |
640 | goto cleanup; | |
641 | ||
642 | for_each_subsystem(sys_dir, sys_dirent, sys_next, evt_path, st) { | |
643 | evt_dir = opendir(evt_path); | |
644 | if (!evt_dir) | |
645 | goto cleanup; | |
646 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, | |
647 | evt_path, st) { | |
648 | snprintf(evt_path, MAXPATHLEN, "%s:%s", | |
649 | sys_dirent.d_name, evt_dirent.d_name); | |
650 | fprintf(stderr, " %-40s [%s]\n", evt_path, | |
651 | event_type_descriptors[PERF_TYPE_TRACEPOINT+1]); | |
652 | } | |
653 | closedir(evt_dir); | |
654 | } | |
655 | ||
656 | cleanup: | |
657 | closedir(sys_dir); | |
658 | } | |
659 | ||
8ad8db37 | 660 | /* |
86847b62 | 661 | * Print the help text for the event symbols: |
8ad8db37 | 662 | */ |
86847b62 | 663 | void print_events(void) |
8ad8db37 | 664 | { |
86847b62 | 665 | struct event_symbol *syms = event_symbols; |
73c24cb8 | 666 | unsigned int i, type, op, prev_type = -1; |
74d5b588 | 667 | char name[40]; |
8ad8db37 | 668 | |
86847b62 TG |
669 | fprintf(stderr, "\n"); |
670 | fprintf(stderr, "List of pre-defined events (to be used in -e):\n"); | |
8ad8db37 | 671 | |
86847b62 TG |
672 | for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) { |
673 | type = syms->type + 1; | |
23cdb5d5 | 674 | if (type >= ARRAY_SIZE(event_type_descriptors)) |
86847b62 | 675 | type = 0; |
8ad8db37 | 676 | |
86847b62 TG |
677 | if (type != prev_type) |
678 | fprintf(stderr, "\n"); | |
8ad8db37 | 679 | |
74d5b588 JSR |
680 | if (strlen(syms->alias)) |
681 | sprintf(name, "%s OR %s", syms->symbol, syms->alias); | |
682 | else | |
683 | strcpy(name, syms->symbol); | |
684 | fprintf(stderr, " %-40s [%s]\n", name, | |
86847b62 | 685 | event_type_descriptors[type]); |
8ad8db37 | 686 | |
86847b62 | 687 | prev_type = type; |
8ad8db37 IM |
688 | } |
689 | ||
73c24cb8 JSR |
690 | fprintf(stderr, "\n"); |
691 | for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { | |
692 | for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { | |
693 | /* skip invalid cache type */ | |
694 | if (!is_cache_op_valid(type, op)) | |
695 | continue; | |
696 | ||
697 | for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { | |
698 | fprintf(stderr, " %-40s [%s]\n", | |
699 | event_cache_name(type, op, i), | |
700 | event_type_descriptors[4]); | |
701 | } | |
702 | } | |
703 | } | |
704 | ||
86847b62 | 705 | fprintf(stderr, "\n"); |
74d5b588 | 706 | fprintf(stderr, " %-40s [raw hardware event descriptor]\n", |
86847b62 TG |
707 | "rNNN"); |
708 | fprintf(stderr, "\n"); | |
709 | ||
f6bdafef JB |
710 | print_tracepoint_events(); |
711 | ||
86847b62 | 712 | exit(129); |
8ad8db37 | 713 | } |