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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 { | |
9cffa8d5 PM |
17 | u8 type; |
18 | u64 config; | |
a21ca2ca | 19 | char *symbol; |
74d5b588 | 20 | 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 | ||
54 | static 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 | ||
64 | static 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 | ||
c0c22dbf | 76 | static 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 | ||
c0c22dbf | 85 | static 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 | ||
c0c22dbf | 91 | static 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 | ||
161 | static char *tracepoint_id_to_name(u64 config) | |
162 | { | |
163 | static char tracepoint_name[2 * MAX_EVENT_LENGTH]; | |
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)) |
f6bdafef JB |
173 | return "unkown"; |
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); | |
200 | snprintf(tracepoint_name, 2 * MAX_EVENT_LENGTH, | |
201 | "%s:%s", sys_dirent.d_name, | |
202 | evt_dirent.d_name); | |
203 | return tracepoint_name; | |
204 | } | |
205 | } | |
206 | closedir(evt_dir); | |
207 | } | |
208 | ||
209 | cleanup: | |
210 | closedir(sys_dir); | |
211 | return "unkown"; | |
212 | } | |
213 | ||
06813f6c JSR |
214 | static int is_cache_op_valid(u8 cache_type, u8 cache_op) |
215 | { | |
216 | if (hw_cache_stat[cache_type] & COP(cache_op)) | |
217 | return 1; /* valid */ | |
218 | else | |
219 | return 0; /* invalid */ | |
220 | } | |
221 | ||
e5c59547 JSR |
222 | static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result) |
223 | { | |
224 | static char name[50]; | |
225 | ||
226 | if (cache_result) { | |
227 | sprintf(name, "%s-%s-%s", hw_cache[cache_type][0], | |
228 | hw_cache_op[cache_op][0], | |
229 | hw_cache_result[cache_result][0]); | |
230 | } else { | |
231 | sprintf(name, "%s-%s", hw_cache[cache_type][0], | |
232 | hw_cache_op[cache_op][1]); | |
233 | } | |
234 | ||
235 | return name; | |
236 | } | |
237 | ||
a21ca2ca | 238 | char *event_name(int counter) |
5242519b | 239 | { |
9cffa8d5 | 240 | u64 config = attrs[counter].config; |
a21ca2ca | 241 | int type = attrs[counter].type; |
8f18aec5 PZ |
242 | |
243 | return __event_name(type, config); | |
244 | } | |
245 | ||
246 | char *__event_name(int type, u64 config) | |
247 | { | |
5242519b IM |
248 | static char buf[32]; |
249 | ||
8f18aec5 | 250 | if (type == PERF_TYPE_RAW) { |
a21ca2ca | 251 | sprintf(buf, "raw 0x%llx", config); |
5242519b IM |
252 | return buf; |
253 | } | |
254 | ||
255 | switch (type) { | |
256 | case PERF_TYPE_HARDWARE: | |
f4dbfa8f | 257 | if (config < PERF_COUNT_HW_MAX) |
a21ca2ca | 258 | return hw_event_names[config]; |
5242519b IM |
259 | return "unknown-hardware"; |
260 | ||
8326f44d | 261 | case PERF_TYPE_HW_CACHE: { |
9cffa8d5 | 262 | u8 cache_type, cache_op, cache_result; |
8326f44d IM |
263 | |
264 | cache_type = (config >> 0) & 0xff; | |
265 | if (cache_type > PERF_COUNT_HW_CACHE_MAX) | |
266 | return "unknown-ext-hardware-cache-type"; | |
267 | ||
268 | cache_op = (config >> 8) & 0xff; | |
8faf3b54 IM |
269 | if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX) |
270 | return "unknown-ext-hardware-cache-op"; | |
8326f44d IM |
271 | |
272 | cache_result = (config >> 16) & 0xff; | |
8faf3b54 IM |
273 | if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX) |
274 | return "unknown-ext-hardware-cache-result"; | |
8326f44d | 275 | |
06813f6c JSR |
276 | if (!is_cache_op_valid(cache_type, cache_op)) |
277 | return "invalid-cache"; | |
8326f44d | 278 | |
e5c59547 | 279 | return event_cache_name(cache_type, cache_op, cache_result); |
8326f44d IM |
280 | } |
281 | ||
5242519b | 282 | case PERF_TYPE_SOFTWARE: |
f4dbfa8f | 283 | if (config < PERF_COUNT_SW_MAX) |
a21ca2ca | 284 | return sw_event_names[config]; |
5242519b IM |
285 | return "unknown-software"; |
286 | ||
f6bdafef JB |
287 | case PERF_TYPE_TRACEPOINT: |
288 | return tracepoint_id_to_name(config); | |
289 | ||
5242519b IM |
290 | default: |
291 | break; | |
292 | } | |
293 | ||
294 | return "unknown"; | |
295 | } | |
296 | ||
61c45981 | 297 | static int parse_aliases(const char **str, char *names[][MAX_ALIASES], int size) |
8326f44d IM |
298 | { |
299 | int i, j; | |
61c45981 | 300 | int n, longest = -1; |
8326f44d IM |
301 | |
302 | for (i = 0; i < size; i++) { | |
61c45981 PM |
303 | for (j = 0; j < MAX_ALIASES && names[i][j]; j++) { |
304 | n = strlen(names[i][j]); | |
305 | if (n > longest && !strncasecmp(*str, names[i][j], n)) | |
306 | longest = n; | |
307 | } | |
308 | if (longest > 0) { | |
309 | *str += longest; | |
310 | return i; | |
8326f44d IM |
311 | } |
312 | } | |
313 | ||
8953645f | 314 | return -1; |
8326f44d IM |
315 | } |
316 | ||
c0c22dbf | 317 | static int |
61c45981 | 318 | parse_generic_hw_event(const char **str, struct perf_counter_attr *attr) |
8326f44d | 319 | { |
61c45981 PM |
320 | const char *s = *str; |
321 | int cache_type = -1, cache_op = -1, cache_result = -1; | |
8326f44d | 322 | |
61c45981 | 323 | cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX); |
8326f44d IM |
324 | /* |
325 | * No fallback - if we cannot get a clear cache type | |
326 | * then bail out: | |
327 | */ | |
328 | if (cache_type == -1) | |
61c45981 PM |
329 | return 0; |
330 | ||
331 | while ((cache_op == -1 || cache_result == -1) && *s == '-') { | |
332 | ++s; | |
333 | ||
334 | if (cache_op == -1) { | |
335 | cache_op = parse_aliases(&s, hw_cache_op, | |
336 | PERF_COUNT_HW_CACHE_OP_MAX); | |
337 | if (cache_op >= 0) { | |
338 | if (!is_cache_op_valid(cache_type, cache_op)) | |
339 | return 0; | |
340 | continue; | |
341 | } | |
342 | } | |
343 | ||
344 | if (cache_result == -1) { | |
345 | cache_result = parse_aliases(&s, hw_cache_result, | |
346 | PERF_COUNT_HW_CACHE_RESULT_MAX); | |
347 | if (cache_result >= 0) | |
348 | continue; | |
349 | } | |
350 | ||
351 | /* | |
352 | * Can't parse this as a cache op or result, so back up | |
353 | * to the '-'. | |
354 | */ | |
355 | --s; | |
356 | break; | |
357 | } | |
8326f44d | 358 | |
8326f44d IM |
359 | /* |
360 | * Fall back to reads: | |
361 | */ | |
8953645f IM |
362 | if (cache_op == -1) |
363 | cache_op = PERF_COUNT_HW_CACHE_OP_READ; | |
8326f44d | 364 | |
8326f44d IM |
365 | /* |
366 | * Fall back to accesses: | |
367 | */ | |
368 | if (cache_result == -1) | |
369 | cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; | |
370 | ||
371 | attr->config = cache_type | (cache_op << 8) | (cache_result << 16); | |
372 | attr->type = PERF_TYPE_HW_CACHE; | |
373 | ||
61c45981 PM |
374 | *str = s; |
375 | return 1; | |
8326f44d IM |
376 | } |
377 | ||
f6bdafef JB |
378 | static int parse_tracepoint_event(const char **strp, |
379 | struct perf_counter_attr *attr) | |
380 | { | |
381 | const char *evt_name; | |
382 | char sys_name[MAX_EVENT_LENGTH]; | |
383 | char id_buf[4]; | |
384 | int fd; | |
385 | unsigned int sys_length, evt_length; | |
386 | u64 id; | |
387 | char evt_path[MAXPATHLEN]; | |
388 | ||
5beeded1 | 389 | if (valid_debugfs_mount(debugfs_path)) |
f6bdafef JB |
390 | return 0; |
391 | ||
392 | evt_name = strchr(*strp, ':'); | |
393 | if (!evt_name) | |
394 | return 0; | |
395 | ||
396 | sys_length = evt_name - *strp; | |
397 | if (sys_length >= MAX_EVENT_LENGTH) | |
398 | return 0; | |
399 | ||
400 | strncpy(sys_name, *strp, sys_length); | |
401 | sys_name[sys_length] = '\0'; | |
402 | evt_name = evt_name + 1; | |
403 | evt_length = strlen(evt_name); | |
404 | if (evt_length >= MAX_EVENT_LENGTH) | |
405 | return 0; | |
406 | ||
5beeded1 JB |
407 | snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, |
408 | sys_name, evt_name); | |
f6bdafef JB |
409 | fd = open(evt_path, O_RDONLY); |
410 | if (fd < 0) | |
411 | return 0; | |
412 | ||
413 | if (read(fd, id_buf, sizeof(id_buf)) < 0) { | |
414 | close(fd); | |
415 | return 0; | |
416 | } | |
417 | close(fd); | |
418 | id = atoll(id_buf); | |
419 | attr->config = id; | |
420 | attr->type = PERF_TYPE_TRACEPOINT; | |
421 | *strp = evt_name + evt_length; | |
422 | return 1; | |
423 | } | |
424 | ||
74d5b588 JSR |
425 | static int check_events(const char *str, unsigned int i) |
426 | { | |
61c45981 | 427 | int n; |
74d5b588 | 428 | |
61c45981 PM |
429 | n = strlen(event_symbols[i].symbol); |
430 | if (!strncmp(str, event_symbols[i].symbol, n)) | |
431 | return n; | |
432 | ||
433 | n = strlen(event_symbols[i].alias); | |
434 | if (n) | |
435 | if (!strncmp(str, event_symbols[i].alias, n)) | |
436 | return n; | |
74d5b588 JSR |
437 | return 0; |
438 | } | |
439 | ||
61c45981 PM |
440 | static int |
441 | parse_symbolic_event(const char **strp, struct perf_counter_attr *attr) | |
8ad8db37 | 442 | { |
61c45981 | 443 | const char *str = *strp; |
8ad8db37 | 444 | unsigned int i; |
61c45981 | 445 | int n; |
8ad8db37 | 446 | |
61c45981 PM |
447 | for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { |
448 | n = check_events(str, i); | |
449 | if (n > 0) { | |
450 | attr->type = event_symbols[i].type; | |
451 | attr->config = event_symbols[i].config; | |
452 | *strp = str + n; | |
453 | return 1; | |
454 | } | |
455 | } | |
456 | return 0; | |
457 | } | |
458 | ||
459 | static int parse_raw_event(const char **strp, struct perf_counter_attr *attr) | |
460 | { | |
461 | const char *str = *strp; | |
462 | u64 config; | |
463 | int n; | |
a21ca2ca | 464 | |
61c45981 | 465 | if (*str != 'r') |
a21ca2ca | 466 | return 0; |
61c45981 PM |
467 | n = hex2u64(str + 1, &config); |
468 | if (n > 0) { | |
469 | *strp = str + n + 1; | |
470 | attr->type = PERF_TYPE_RAW; | |
471 | attr->config = config; | |
472 | return 1; | |
a21ca2ca | 473 | } |
61c45981 PM |
474 | return 0; |
475 | } | |
8ad8db37 | 476 | |
61c45981 PM |
477 | static int |
478 | parse_numeric_event(const char **strp, struct perf_counter_attr *attr) | |
479 | { | |
480 | const char *str = *strp; | |
481 | char *endp; | |
482 | unsigned long type; | |
483 | u64 config; | |
484 | ||
485 | type = strtoul(str, &endp, 0); | |
486 | if (endp > str && type < PERF_TYPE_MAX && *endp == ':') { | |
487 | str = endp + 1; | |
488 | config = strtoul(str, &endp, 0); | |
489 | if (endp > str) { | |
490 | attr->type = type; | |
491 | attr->config = config; | |
492 | *strp = endp; | |
493 | return 1; | |
a0055ae2 | 494 | } |
61c45981 PM |
495 | } |
496 | return 0; | |
497 | } | |
498 | ||
499 | static int | |
500 | parse_event_modifier(const char **strp, struct perf_counter_attr *attr) | |
501 | { | |
502 | const char *str = *strp; | |
503 | int eu = 1, ek = 1, eh = 1; | |
a21ca2ca | 504 | |
61c45981 | 505 | if (*str++ != ':') |
a21ca2ca | 506 | return 0; |
61c45981 PM |
507 | while (*str) { |
508 | if (*str == 'u') | |
509 | eu = 0; | |
510 | else if (*str == 'k') | |
511 | ek = 0; | |
512 | else if (*str == 'h') | |
513 | eh = 0; | |
514 | else | |
515 | break; | |
516 | ++str; | |
5242519b | 517 | } |
61c45981 PM |
518 | if (str >= *strp + 2) { |
519 | *strp = str; | |
520 | attr->exclude_user = eu; | |
521 | attr->exclude_kernel = ek; | |
522 | attr->exclude_hv = eh; | |
523 | return 1; | |
524 | } | |
525 | return 0; | |
526 | } | |
8ad8db37 | 527 | |
61c45981 PM |
528 | /* |
529 | * Each event can have multiple symbolic names. | |
530 | * Symbolic names are (almost) exactly matched. | |
531 | */ | |
532 | static int parse_event_symbols(const char **str, struct perf_counter_attr *attr) | |
533 | { | |
f6bdafef JB |
534 | if (!(parse_tracepoint_event(str, attr) || |
535 | parse_raw_event(str, attr) || | |
61c45981 PM |
536 | parse_numeric_event(str, attr) || |
537 | parse_symbolic_event(str, attr) || | |
538 | parse_generic_hw_event(str, attr))) | |
539 | return 0; | |
a21ca2ca | 540 | |
61c45981 | 541 | parse_event_modifier(str, attr); |
8ad8db37 | 542 | |
61c45981 | 543 | return 1; |
8ad8db37 IM |
544 | } |
545 | ||
f37a291c | 546 | int parse_events(const struct option *opt __used, const char *str, int unset __used) |
8ad8db37 | 547 | { |
a21ca2ca | 548 | struct perf_counter_attr attr; |
8ad8db37 | 549 | |
61c45981 PM |
550 | for (;;) { |
551 | if (nr_counters == MAX_COUNTERS) | |
552 | return -1; | |
553 | ||
554 | memset(&attr, 0, sizeof(attr)); | |
555 | if (!parse_event_symbols(&str, &attr)) | |
556 | return -1; | |
8ad8db37 | 557 | |
61c45981 PM |
558 | if (!(*str == 0 || *str == ',' || isspace(*str))) |
559 | return -1; | |
8ad8db37 | 560 | |
61c45981 PM |
561 | attrs[nr_counters] = attr; |
562 | nr_counters++; | |
8ad8db37 | 563 | |
61c45981 PM |
564 | if (*str == 0) |
565 | break; | |
566 | if (*str == ',') | |
567 | ++str; | |
568 | while (isspace(*str)) | |
569 | ++str; | |
8ad8db37 IM |
570 | } |
571 | ||
572 | return 0; | |
573 | } | |
574 | ||
86847b62 TG |
575 | static const char * const event_type_descriptors[] = { |
576 | "", | |
577 | "Hardware event", | |
578 | "Software event", | |
579 | "Tracepoint event", | |
580 | "Hardware cache event", | |
581 | }; | |
582 | ||
f6bdafef JB |
583 | /* |
584 | * Print the events from <debugfs_mount_point>/tracing/events | |
585 | */ | |
586 | ||
587 | static void print_tracepoint_events(void) | |
588 | { | |
589 | DIR *sys_dir, *evt_dir; | |
590 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
591 | struct stat st; | |
592 | char evt_path[MAXPATHLEN]; | |
593 | ||
5beeded1 | 594 | if (valid_debugfs_mount(debugfs_path)) |
f6bdafef JB |
595 | return; |
596 | ||
5beeded1 | 597 | sys_dir = opendir(debugfs_path); |
f6bdafef JB |
598 | if (!sys_dir) |
599 | goto cleanup; | |
600 | ||
601 | for_each_subsystem(sys_dir, sys_dirent, sys_next, evt_path, st) { | |
602 | evt_dir = opendir(evt_path); | |
603 | if (!evt_dir) | |
604 | goto cleanup; | |
605 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, | |
606 | evt_path, st) { | |
607 | snprintf(evt_path, MAXPATHLEN, "%s:%s", | |
608 | sys_dirent.d_name, evt_dirent.d_name); | |
609 | fprintf(stderr, " %-40s [%s]\n", evt_path, | |
610 | event_type_descriptors[PERF_TYPE_TRACEPOINT+1]); | |
611 | } | |
612 | closedir(evt_dir); | |
613 | } | |
614 | ||
615 | cleanup: | |
616 | closedir(sys_dir); | |
617 | } | |
618 | ||
8ad8db37 | 619 | /* |
86847b62 | 620 | * Print the help text for the event symbols: |
8ad8db37 | 621 | */ |
86847b62 | 622 | void print_events(void) |
8ad8db37 | 623 | { |
86847b62 | 624 | struct event_symbol *syms = event_symbols; |
73c24cb8 | 625 | unsigned int i, type, op, prev_type = -1; |
74d5b588 | 626 | char name[40]; |
8ad8db37 | 627 | |
86847b62 TG |
628 | fprintf(stderr, "\n"); |
629 | fprintf(stderr, "List of pre-defined events (to be used in -e):\n"); | |
8ad8db37 | 630 | |
86847b62 TG |
631 | for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) { |
632 | type = syms->type + 1; | |
23cdb5d5 | 633 | if (type >= ARRAY_SIZE(event_type_descriptors)) |
86847b62 | 634 | type = 0; |
8ad8db37 | 635 | |
86847b62 TG |
636 | if (type != prev_type) |
637 | fprintf(stderr, "\n"); | |
8ad8db37 | 638 | |
74d5b588 JSR |
639 | if (strlen(syms->alias)) |
640 | sprintf(name, "%s OR %s", syms->symbol, syms->alias); | |
641 | else | |
642 | strcpy(name, syms->symbol); | |
643 | fprintf(stderr, " %-40s [%s]\n", name, | |
86847b62 | 644 | event_type_descriptors[type]); |
8ad8db37 | 645 | |
86847b62 | 646 | prev_type = type; |
8ad8db37 IM |
647 | } |
648 | ||
73c24cb8 JSR |
649 | fprintf(stderr, "\n"); |
650 | for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { | |
651 | for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { | |
652 | /* skip invalid cache type */ | |
653 | if (!is_cache_op_valid(type, op)) | |
654 | continue; | |
655 | ||
656 | for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { | |
657 | fprintf(stderr, " %-40s [%s]\n", | |
658 | event_cache_name(type, op, i), | |
659 | event_type_descriptors[4]); | |
660 | } | |
661 | } | |
662 | } | |
663 | ||
86847b62 | 664 | fprintf(stderr, "\n"); |
74d5b588 | 665 | fprintf(stderr, " %-40s [raw hardware event descriptor]\n", |
86847b62 TG |
666 | "rNNN"); |
667 | fprintf(stderr, "\n"); | |
668 | ||
f6bdafef JB |
669 | print_tracepoint_events(); |
670 | ||
86847b62 | 671 | exit(129); |
8ad8db37 | 672 | } |