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d2709c7c | 1 | #include <linux/hw_breakpoint.h> |
8dd2a131 | 2 | #include <linux/err.h> |
8ad8db37 | 3 | #include "util.h" |
6b58e7f1 | 4 | #include "../perf.h" |
361c99a6 | 5 | #include "evlist.h" |
69aad6f1 | 6 | #include "evsel.h" |
4b6ab94e | 7 | #include <subcmd/parse-options.h> |
8ad8db37 | 8 | #include "parse-events.h" |
4b6ab94e | 9 | #include <subcmd/exec-cmd.h> |
42f60c2d | 10 | #include "string.h" |
5aab621b | 11 | #include "symbol.h" |
5beeded1 | 12 | #include "cache.h" |
8755a8f2 | 13 | #include "header.h" |
84c86ca1 | 14 | #include "bpf-loader.h" |
6e81c74c | 15 | #include "debug.h" |
592d5a6b | 16 | #include <api/fs/tracing_path.h> |
ac20de6f | 17 | #include "parse-events-bison.h" |
90e2b22d | 18 | #define YY_EXTRA_TYPE int |
89812fc8 | 19 | #include "parse-events-flex.h" |
5f537a26 | 20 | #include "pmu.h" |
b41f1cec | 21 | #include "thread_map.h" |
f30a79b0 | 22 | #include "cpumap.h" |
b39b8393 | 23 | #include "asm/bug.h" |
89812fc8 JO |
24 | |
25 | #define MAX_NAME_LEN 100 | |
8ad8db37 | 26 | |
82ba1f2f JO |
27 | #ifdef PARSER_DEBUG |
28 | extern int parse_events_debug; | |
29 | #endif | |
ac20de6f | 30 | int parse_events_parse(void *data, void *scanner); |
e637d177 HK |
31 | static int get_config_terms(struct list_head *head_config, |
32 | struct list_head *head_terms __maybe_unused); | |
bcd3279f | 33 | |
dcb4e102 KL |
34 | static struct perf_pmu_event_symbol *perf_pmu_events_list; |
35 | /* | |
36 | * The variable indicates the number of supported pmu event symbols. | |
37 | * 0 means not initialized and ready to init | |
38 | * -1 means failed to init, don't try anymore | |
39 | * >0 is the number of supported pmu event symbols | |
40 | */ | |
41 | static int perf_pmu_events_list_num; | |
42 | ||
705750f2 | 43 | struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { |
1dc12760 JO |
44 | [PERF_COUNT_HW_CPU_CYCLES] = { |
45 | .symbol = "cpu-cycles", | |
46 | .alias = "cycles", | |
47 | }, | |
48 | [PERF_COUNT_HW_INSTRUCTIONS] = { | |
49 | .symbol = "instructions", | |
50 | .alias = "", | |
51 | }, | |
52 | [PERF_COUNT_HW_CACHE_REFERENCES] = { | |
53 | .symbol = "cache-references", | |
54 | .alias = "", | |
55 | }, | |
56 | [PERF_COUNT_HW_CACHE_MISSES] = { | |
57 | .symbol = "cache-misses", | |
58 | .alias = "", | |
59 | }, | |
60 | [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { | |
61 | .symbol = "branch-instructions", | |
62 | .alias = "branches", | |
63 | }, | |
64 | [PERF_COUNT_HW_BRANCH_MISSES] = { | |
65 | .symbol = "branch-misses", | |
66 | .alias = "", | |
67 | }, | |
68 | [PERF_COUNT_HW_BUS_CYCLES] = { | |
69 | .symbol = "bus-cycles", | |
70 | .alias = "", | |
71 | }, | |
72 | [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { | |
73 | .symbol = "stalled-cycles-frontend", | |
74 | .alias = "idle-cycles-frontend", | |
75 | }, | |
76 | [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { | |
77 | .symbol = "stalled-cycles-backend", | |
78 | .alias = "idle-cycles-backend", | |
79 | }, | |
80 | [PERF_COUNT_HW_REF_CPU_CYCLES] = { | |
81 | .symbol = "ref-cycles", | |
82 | .alias = "", | |
83 | }, | |
84 | }; | |
85 | ||
705750f2 | 86 | struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { |
1dc12760 JO |
87 | [PERF_COUNT_SW_CPU_CLOCK] = { |
88 | .symbol = "cpu-clock", | |
89 | .alias = "", | |
90 | }, | |
91 | [PERF_COUNT_SW_TASK_CLOCK] = { | |
92 | .symbol = "task-clock", | |
93 | .alias = "", | |
94 | }, | |
95 | [PERF_COUNT_SW_PAGE_FAULTS] = { | |
96 | .symbol = "page-faults", | |
97 | .alias = "faults", | |
98 | }, | |
99 | [PERF_COUNT_SW_CONTEXT_SWITCHES] = { | |
100 | .symbol = "context-switches", | |
101 | .alias = "cs", | |
102 | }, | |
103 | [PERF_COUNT_SW_CPU_MIGRATIONS] = { | |
104 | .symbol = "cpu-migrations", | |
105 | .alias = "migrations", | |
106 | }, | |
107 | [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { | |
108 | .symbol = "minor-faults", | |
109 | .alias = "", | |
110 | }, | |
111 | [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { | |
112 | .symbol = "major-faults", | |
113 | .alias = "", | |
114 | }, | |
115 | [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { | |
116 | .symbol = "alignment-faults", | |
117 | .alias = "", | |
118 | }, | |
119 | [PERF_COUNT_SW_EMULATION_FAULTS] = { | |
120 | .symbol = "emulation-faults", | |
121 | .alias = "", | |
122 | }, | |
d22d1a2a AH |
123 | [PERF_COUNT_SW_DUMMY] = { |
124 | .symbol = "dummy", | |
125 | .alias = "", | |
126 | }, | |
bae9cc41 ACM |
127 | [PERF_COUNT_SW_BPF_OUTPUT] = { |
128 | .symbol = "bpf-output", | |
129 | .alias = "", | |
130 | }, | |
8ad8db37 IM |
131 | }; |
132 | ||
cdd6c482 IM |
133 | #define __PERF_EVENT_FIELD(config, name) \ |
134 | ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) | |
5242519b | 135 | |
1fc570ad | 136 | #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW) |
cdd6c482 | 137 | #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG) |
1fc570ad | 138 | #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE) |
cdd6c482 | 139 | #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT) |
5242519b | 140 | |
6b58e7f1 | 141 | #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \ |
f6bdafef | 142 | while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \ |
6b58e7f1 | 143 | if (sys_dirent.d_type == DT_DIR && \ |
f6bdafef JB |
144 | (strcmp(sys_dirent.d_name, ".")) && \ |
145 | (strcmp(sys_dirent.d_name, ".."))) | |
146 | ||
ae07b63f PZ |
147 | static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir) |
148 | { | |
149 | char evt_path[MAXPATHLEN]; | |
150 | int fd; | |
151 | ||
ebf294bf | 152 | snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path, |
ae07b63f PZ |
153 | sys_dir->d_name, evt_dir->d_name); |
154 | fd = open(evt_path, O_RDONLY); | |
155 | if (fd < 0) | |
156 | return -EINVAL; | |
157 | close(fd); | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
6b58e7f1 | 162 | #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \ |
f6bdafef | 163 | while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \ |
6b58e7f1 | 164 | if (evt_dirent.d_type == DT_DIR && \ |
f6bdafef | 165 | (strcmp(evt_dirent.d_name, ".")) && \ |
ae07b63f PZ |
166 | (strcmp(evt_dirent.d_name, "..")) && \ |
167 | (!tp_event_has_id(&sys_dirent, &evt_dirent))) | |
f6bdafef | 168 | |
270bbbe8 | 169 | #define MAX_EVENT_LENGTH 512 |
f6bdafef | 170 | |
f6bdafef | 171 | |
1ef2ed10 | 172 | struct tracepoint_path *tracepoint_id_to_path(u64 config) |
f6bdafef | 173 | { |
1ef2ed10 | 174 | struct tracepoint_path *path = NULL; |
f6bdafef JB |
175 | DIR *sys_dir, *evt_dir; |
176 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
8aa8a7c8 | 177 | char id_buf[24]; |
725b1368 | 178 | int fd; |
f6bdafef JB |
179 | u64 id; |
180 | char evt_path[MAXPATHLEN]; | |
725b1368 | 181 | char dir_path[MAXPATHLEN]; |
f6bdafef | 182 | |
ebf294bf | 183 | sys_dir = opendir(tracing_events_path); |
f6bdafef | 184 | if (!sys_dir) |
725b1368 | 185 | return NULL; |
6b58e7f1 UD |
186 | |
187 | for_each_subsystem(sys_dir, sys_dirent, sys_next) { | |
725b1368 | 188 | |
ebf294bf | 189 | snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path, |
725b1368 ED |
190 | sys_dirent.d_name); |
191 | evt_dir = opendir(dir_path); | |
192 | if (!evt_dir) | |
6b58e7f1 | 193 | continue; |
725b1368 | 194 | |
6b58e7f1 | 195 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { |
725b1368 ED |
196 | |
197 | snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, | |
f6bdafef | 198 | evt_dirent.d_name); |
725b1368 | 199 | fd = open(evt_path, O_RDONLY); |
f6bdafef JB |
200 | if (fd < 0) |
201 | continue; | |
202 | if (read(fd, id_buf, sizeof(id_buf)) < 0) { | |
203 | close(fd); | |
204 | continue; | |
205 | } | |
206 | close(fd); | |
207 | id = atoll(id_buf); | |
208 | if (id == config) { | |
209 | closedir(evt_dir); | |
210 | closedir(sys_dir); | |
59b4caeb | 211 | path = zalloc(sizeof(*path)); |
1ef2ed10 FW |
212 | path->system = malloc(MAX_EVENT_LENGTH); |
213 | if (!path->system) { | |
214 | free(path); | |
215 | return NULL; | |
216 | } | |
217 | path->name = malloc(MAX_EVENT_LENGTH); | |
218 | if (!path->name) { | |
74cf249d | 219 | zfree(&path->system); |
1ef2ed10 FW |
220 | free(path); |
221 | return NULL; | |
222 | } | |
223 | strncpy(path->system, sys_dirent.d_name, | |
224 | MAX_EVENT_LENGTH); | |
225 | strncpy(path->name, evt_dirent.d_name, | |
226 | MAX_EVENT_LENGTH); | |
227 | return path; | |
f6bdafef JB |
228 | } |
229 | } | |
230 | closedir(evt_dir); | |
231 | } | |
232 | ||
f6bdafef | 233 | closedir(sys_dir); |
1ef2ed10 FW |
234 | return NULL; |
235 | } | |
236 | ||
e7c93f09 NK |
237 | struct tracepoint_path *tracepoint_name_to_path(const char *name) |
238 | { | |
239 | struct tracepoint_path *path = zalloc(sizeof(*path)); | |
240 | char *str = strchr(name, ':'); | |
241 | ||
242 | if (path == NULL || str == NULL) { | |
243 | free(path); | |
244 | return NULL; | |
245 | } | |
246 | ||
247 | path->system = strndup(name, str - name); | |
248 | path->name = strdup(str+1); | |
249 | ||
250 | if (path->system == NULL || path->name == NULL) { | |
74cf249d ACM |
251 | zfree(&path->system); |
252 | zfree(&path->name); | |
e7c93f09 NK |
253 | free(path); |
254 | path = NULL; | |
255 | } | |
256 | ||
257 | return path; | |
258 | } | |
259 | ||
1424dc96 DA |
260 | const char *event_type(int type) |
261 | { | |
262 | switch (type) { | |
263 | case PERF_TYPE_HARDWARE: | |
264 | return "hardware"; | |
265 | ||
266 | case PERF_TYPE_SOFTWARE: | |
267 | return "software"; | |
268 | ||
269 | case PERF_TYPE_TRACEPOINT: | |
270 | return "tracepoint"; | |
271 | ||
272 | case PERF_TYPE_HW_CACHE: | |
273 | return "hardware-cache"; | |
274 | ||
275 | default: | |
276 | break; | |
277 | } | |
278 | ||
279 | return "unknown"; | |
280 | } | |
281 | ||
7ae92e74 YZ |
282 | |
283 | ||
410136f5 SE |
284 | static struct perf_evsel * |
285 | __add_event(struct list_head *list, int *idx, | |
286 | struct perf_event_attr *attr, | |
930a2e29 JO |
287 | char *name, struct cpu_map *cpus, |
288 | struct list_head *config_terms) | |
89812fc8 JO |
289 | { |
290 | struct perf_evsel *evsel; | |
291 | ||
292 | event_attr_init(attr); | |
293 | ||
ef503831 | 294 | evsel = perf_evsel__new_idx(attr, (*idx)++); |
c5cd8ac0 | 295 | if (!evsel) |
410136f5 | 296 | return NULL; |
89812fc8 | 297 | |
fce4d296 AH |
298 | evsel->cpus = cpu_map__get(cpus); |
299 | evsel->own_cpus = cpu_map__get(cpus); | |
f30a79b0 | 300 | |
9db1763c ACM |
301 | if (name) |
302 | evsel->name = strdup(name); | |
930a2e29 JO |
303 | |
304 | if (config_terms) | |
305 | list_splice(config_terms, &evsel->config_terms); | |
306 | ||
b847cbdc | 307 | list_add_tail(&evsel->node, list); |
410136f5 | 308 | return evsel; |
89812fc8 JO |
309 | } |
310 | ||
c5cd8ac0 | 311 | static int add_event(struct list_head *list, int *idx, |
930a2e29 JO |
312 | struct perf_event_attr *attr, char *name, |
313 | struct list_head *config_terms) | |
7ae92e74 | 314 | { |
930a2e29 | 315 | return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM; |
7ae92e74 YZ |
316 | } |
317 | ||
0b668bc9 | 318 | static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size) |
8326f44d IM |
319 | { |
320 | int i, j; | |
61c45981 | 321 | int n, longest = -1; |
8326f44d IM |
322 | |
323 | for (i = 0; i < size; i++) { | |
0b668bc9 | 324 | for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) { |
61c45981 | 325 | n = strlen(names[i][j]); |
89812fc8 | 326 | if (n > longest && !strncasecmp(str, names[i][j], n)) |
61c45981 PM |
327 | longest = n; |
328 | } | |
89812fc8 | 329 | if (longest > 0) |
61c45981 | 330 | return i; |
8326f44d IM |
331 | } |
332 | ||
8953645f | 333 | return -1; |
8326f44d IM |
334 | } |
335 | ||
c5cd8ac0 | 336 | int parse_events_add_cache(struct list_head *list, int *idx, |
89812fc8 | 337 | char *type, char *op_result1, char *op_result2) |
8326f44d | 338 | { |
89812fc8 JO |
339 | struct perf_event_attr attr; |
340 | char name[MAX_NAME_LEN]; | |
61c45981 | 341 | int cache_type = -1, cache_op = -1, cache_result = -1; |
89812fc8 JO |
342 | char *op_result[2] = { op_result1, op_result2 }; |
343 | int i, n; | |
8326f44d | 344 | |
8326f44d IM |
345 | /* |
346 | * No fallback - if we cannot get a clear cache type | |
347 | * then bail out: | |
348 | */ | |
0b668bc9 | 349 | cache_type = parse_aliases(type, perf_evsel__hw_cache, |
89812fc8 | 350 | PERF_COUNT_HW_CACHE_MAX); |
8326f44d | 351 | if (cache_type == -1) |
89812fc8 JO |
352 | return -EINVAL; |
353 | ||
354 | n = snprintf(name, MAX_NAME_LEN, "%s", type); | |
61c45981 | 355 | |
89812fc8 JO |
356 | for (i = 0; (i < 2) && (op_result[i]); i++) { |
357 | char *str = op_result[i]; | |
358 | ||
275ef387 | 359 | n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str); |
61c45981 PM |
360 | |
361 | if (cache_op == -1) { | |
0b668bc9 | 362 | cache_op = parse_aliases(str, perf_evsel__hw_cache_op, |
89812fc8 | 363 | PERF_COUNT_HW_CACHE_OP_MAX); |
61c45981 | 364 | if (cache_op >= 0) { |
0b668bc9 | 365 | if (!perf_evsel__is_cache_op_valid(cache_type, cache_op)) |
89812fc8 | 366 | return -EINVAL; |
61c45981 PM |
367 | continue; |
368 | } | |
369 | } | |
370 | ||
371 | if (cache_result == -1) { | |
0b668bc9 ACM |
372 | cache_result = parse_aliases(str, perf_evsel__hw_cache_result, |
373 | PERF_COUNT_HW_CACHE_RESULT_MAX); | |
61c45981 PM |
374 | if (cache_result >= 0) |
375 | continue; | |
376 | } | |
61c45981 | 377 | } |
8326f44d | 378 | |
8326f44d IM |
379 | /* |
380 | * Fall back to reads: | |
381 | */ | |
8953645f IM |
382 | if (cache_op == -1) |
383 | cache_op = PERF_COUNT_HW_CACHE_OP_READ; | |
8326f44d | 384 | |
8326f44d IM |
385 | /* |
386 | * Fall back to accesses: | |
387 | */ | |
388 | if (cache_result == -1) | |
389 | cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; | |
390 | ||
89812fc8 JO |
391 | memset(&attr, 0, sizeof(attr)); |
392 | attr.config = cache_type | (cache_op << 8) | (cache_result << 16); | |
393 | attr.type = PERF_TYPE_HW_CACHE; | |
930a2e29 | 394 | return add_event(list, idx, &attr, name, NULL); |
bcd3279f FW |
395 | } |
396 | ||
272ed29a | 397 | static void tracepoint_error(struct parse_events_error *e, int err, |
19658171 JO |
398 | char *sys, char *name) |
399 | { | |
400 | char help[BUFSIZ]; | |
401 | ||
402 | /* | |
403 | * We get error directly from syscall errno ( > 0), | |
404 | * or from encoded pointer's error ( < 0). | |
405 | */ | |
406 | err = abs(err); | |
407 | ||
408 | switch (err) { | |
409 | case EACCES: | |
272ed29a | 410 | e->str = strdup("can't access trace events"); |
19658171 JO |
411 | break; |
412 | case ENOENT: | |
272ed29a | 413 | e->str = strdup("unknown tracepoint"); |
19658171 JO |
414 | break; |
415 | default: | |
272ed29a | 416 | e->str = strdup("failed to add tracepoint"); |
19658171 JO |
417 | break; |
418 | } | |
419 | ||
420 | tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); | |
272ed29a | 421 | e->help = strdup(help); |
19658171 JO |
422 | } |
423 | ||
c5cd8ac0 | 424 | static int add_tracepoint(struct list_head *list, int *idx, |
e2f9f8ea | 425 | char *sys_name, char *evt_name, |
272ed29a | 426 | struct parse_events_error *err, |
e637d177 | 427 | struct list_head *head_config) |
bcd3279f | 428 | { |
82fe1c29 | 429 | struct perf_evsel *evsel; |
bcd3279f | 430 | |
ef503831 | 431 | evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++); |
19658171 | 432 | if (IS_ERR(evsel)) { |
272ed29a | 433 | tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name); |
8dd2a131 | 434 | return PTR_ERR(evsel); |
19658171 | 435 | } |
bcd3279f | 436 | |
e637d177 HK |
437 | if (head_config) { |
438 | LIST_HEAD(config_terms); | |
439 | ||
440 | if (get_config_terms(head_config, &config_terms)) | |
441 | return -ENOMEM; | |
442 | list_splice(&config_terms, &evsel->config_terms); | |
443 | } | |
444 | ||
82fe1c29 | 445 | list_add_tail(&evsel->node, list); |
82fe1c29 | 446 | return 0; |
8326f44d IM |
447 | } |
448 | ||
c5cd8ac0 | 449 | static int add_tracepoint_multi_event(struct list_head *list, int *idx, |
e2f9f8ea | 450 | char *sys_name, char *evt_name, |
272ed29a | 451 | struct parse_events_error *err, |
e637d177 | 452 | struct list_head *head_config) |
bcd3279f FW |
453 | { |
454 | char evt_path[MAXPATHLEN]; | |
455 | struct dirent *evt_ent; | |
456 | DIR *evt_dir; | |
27bf90bf | 457 | int ret = 0, found = 0; |
bcd3279f | 458 | |
ebf294bf | 459 | snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name); |
bcd3279f | 460 | evt_dir = opendir(evt_path); |
bcd3279f | 461 | if (!evt_dir) { |
272ed29a | 462 | tracepoint_error(err, errno, sys_name, evt_name); |
89812fc8 | 463 | return -1; |
bcd3279f FW |
464 | } |
465 | ||
89812fc8 | 466 | while (!ret && (evt_ent = readdir(evt_dir))) { |
bcd3279f FW |
467 | if (!strcmp(evt_ent->d_name, ".") |
468 | || !strcmp(evt_ent->d_name, "..") | |
469 | || !strcmp(evt_ent->d_name, "enable") | |
470 | || !strcmp(evt_ent->d_name, "filter")) | |
471 | continue; | |
472 | ||
89812fc8 | 473 | if (!strglobmatch(evt_ent->d_name, evt_name)) |
fb1d2edf MH |
474 | continue; |
475 | ||
27bf90bf JO |
476 | found++; |
477 | ||
e637d177 | 478 | ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, |
272ed29a | 479 | err, head_config); |
bcd3279f FW |
480 | } |
481 | ||
27bf90bf JO |
482 | if (!found) { |
483 | tracepoint_error(err, ENOENT, sys_name, evt_name); | |
484 | ret = -1; | |
485 | } | |
486 | ||
0bd3f084 | 487 | closedir(evt_dir); |
89812fc8 | 488 | return ret; |
bcd3279f FW |
489 | } |
490 | ||
c5cd8ac0 | 491 | static int add_tracepoint_event(struct list_head *list, int *idx, |
e2f9f8ea | 492 | char *sys_name, char *evt_name, |
272ed29a | 493 | struct parse_events_error *err, |
e637d177 | 494 | struct list_head *head_config) |
f35488f9 JO |
495 | { |
496 | return strpbrk(evt_name, "*?") ? | |
e637d177 | 497 | add_tracepoint_multi_event(list, idx, sys_name, evt_name, |
272ed29a | 498 | err, head_config) : |
e637d177 | 499 | add_tracepoint(list, idx, sys_name, evt_name, |
272ed29a | 500 | err, head_config); |
f35488f9 JO |
501 | } |
502 | ||
c5cd8ac0 | 503 | static int add_tracepoint_multi_sys(struct list_head *list, int *idx, |
e2f9f8ea | 504 | char *sys_name, char *evt_name, |
272ed29a | 505 | struct parse_events_error *err, |
e637d177 | 506 | struct list_head *head_config) |
f35488f9 JO |
507 | { |
508 | struct dirent *events_ent; | |
509 | DIR *events_dir; | |
510 | int ret = 0; | |
511 | ||
512 | events_dir = opendir(tracing_events_path); | |
513 | if (!events_dir) { | |
272ed29a | 514 | tracepoint_error(err, errno, sys_name, evt_name); |
f35488f9 JO |
515 | return -1; |
516 | } | |
517 | ||
518 | while (!ret && (events_ent = readdir(events_dir))) { | |
519 | if (!strcmp(events_ent->d_name, ".") | |
520 | || !strcmp(events_ent->d_name, "..") | |
521 | || !strcmp(events_ent->d_name, "enable") | |
522 | || !strcmp(events_ent->d_name, "header_event") | |
523 | || !strcmp(events_ent->d_name, "header_page")) | |
524 | continue; | |
525 | ||
526 | if (!strglobmatch(events_ent->d_name, sys_name)) | |
527 | continue; | |
528 | ||
529 | ret = add_tracepoint_event(list, idx, events_ent->d_name, | |
272ed29a | 530 | evt_name, err, head_config); |
f35488f9 JO |
531 | } |
532 | ||
533 | closedir(events_dir); | |
534 | return ret; | |
535 | } | |
536 | ||
4edf30e3 WN |
537 | struct __add_bpf_event_param { |
538 | struct parse_events_evlist *data; | |
539 | struct list_head *list; | |
540 | }; | |
541 | ||
542 | static int add_bpf_event(struct probe_trace_event *tev, int fd, | |
543 | void *_param) | |
544 | { | |
545 | LIST_HEAD(new_evsels); | |
546 | struct __add_bpf_event_param *param = _param; | |
547 | struct parse_events_evlist *evlist = param->data; | |
548 | struct list_head *list = param->list; | |
1f45b1d4 | 549 | struct perf_evsel *pos; |
4edf30e3 WN |
550 | int err; |
551 | ||
552 | pr_debug("add bpf event %s:%s and attach bpf program %d\n", | |
553 | tev->group, tev->event, fd); | |
554 | ||
555 | err = parse_events_add_tracepoint(&new_evsels, &evlist->idx, tev->group, | |
556 | tev->event, evlist->error, NULL); | |
557 | if (err) { | |
558 | struct perf_evsel *evsel, *tmp; | |
559 | ||
560 | pr_debug("Failed to add BPF event %s:%s\n", | |
561 | tev->group, tev->event); | |
562 | list_for_each_entry_safe(evsel, tmp, &new_evsels, node) { | |
563 | list_del(&evsel->node); | |
564 | perf_evsel__delete(evsel); | |
565 | } | |
566 | return err; | |
567 | } | |
568 | pr_debug("adding %s:%s\n", tev->group, tev->event); | |
569 | ||
1f45b1d4 WN |
570 | list_for_each_entry(pos, &new_evsels, node) { |
571 | pr_debug("adding %s:%s to %p\n", | |
572 | tev->group, tev->event, pos); | |
573 | pos->bpf_fd = fd; | |
574 | } | |
4edf30e3 WN |
575 | list_splice(&new_evsels, list); |
576 | return 0; | |
577 | } | |
578 | ||
84c86ca1 WN |
579 | int parse_events_load_bpf_obj(struct parse_events_evlist *data, |
580 | struct list_head *list, | |
581 | struct bpf_object *obj) | |
582 | { | |
583 | int err; | |
584 | char errbuf[BUFSIZ]; | |
4edf30e3 | 585 | struct __add_bpf_event_param param = {data, list}; |
aa3abf30 | 586 | static bool registered_unprobe_atexit = false; |
84c86ca1 WN |
587 | |
588 | if (IS_ERR(obj) || !obj) { | |
589 | snprintf(errbuf, sizeof(errbuf), | |
590 | "Internal error: load bpf obj with NULL"); | |
591 | err = -EINVAL; | |
592 | goto errout; | |
593 | } | |
594 | ||
aa3abf30 WN |
595 | /* |
596 | * Register atexit handler before calling bpf__probe() so | |
597 | * bpf__probe() don't need to unprobe probe points its already | |
598 | * created when failure. | |
599 | */ | |
600 | if (!registered_unprobe_atexit) { | |
601 | atexit(bpf__clear); | |
602 | registered_unprobe_atexit = true; | |
603 | } | |
604 | ||
605 | err = bpf__probe(obj); | |
606 | if (err) { | |
607 | bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf)); | |
608 | goto errout; | |
609 | } | |
610 | ||
1e5e3ee8 WN |
611 | err = bpf__load(obj); |
612 | if (err) { | |
613 | bpf__strerror_load(obj, err, errbuf, sizeof(errbuf)); | |
614 | goto errout; | |
615 | } | |
616 | ||
4edf30e3 WN |
617 | err = bpf__foreach_tev(obj, add_bpf_event, ¶m); |
618 | if (err) { | |
619 | snprintf(errbuf, sizeof(errbuf), | |
620 | "Attach events in BPF object failed"); | |
621 | goto errout; | |
622 | } | |
623 | ||
624 | return 0; | |
84c86ca1 WN |
625 | errout: |
626 | data->error->help = strdup("(add -v to see detail)"); | |
627 | data->error->str = strdup(errbuf); | |
628 | return err; | |
629 | } | |
630 | ||
631 | int parse_events_load_bpf(struct parse_events_evlist *data, | |
632 | struct list_head *list, | |
d509db04 WN |
633 | char *bpf_file_name, |
634 | bool source) | |
84c86ca1 WN |
635 | { |
636 | struct bpf_object *obj; | |
637 | ||
d509db04 | 638 | obj = bpf__prepare_load(bpf_file_name, source); |
6371ca3b | 639 | if (IS_ERR(obj)) { |
84c86ca1 WN |
640 | char errbuf[BUFSIZ]; |
641 | int err; | |
642 | ||
6371ca3b | 643 | err = PTR_ERR(obj); |
84c86ca1 WN |
644 | |
645 | if (err == -ENOTSUP) | |
646 | snprintf(errbuf, sizeof(errbuf), | |
647 | "BPF support is not compiled"); | |
648 | else | |
d3e0ce39 WN |
649 | bpf__strerror_prepare_load(bpf_file_name, |
650 | source, | |
651 | -err, errbuf, | |
652 | sizeof(errbuf)); | |
84c86ca1 WN |
653 | |
654 | data->error->help = strdup("(add -v to see detail)"); | |
655 | data->error->str = strdup(errbuf); | |
656 | return err; | |
657 | } | |
658 | ||
659 | return parse_events_load_bpf_obj(data, list, obj); | |
660 | } | |
661 | ||
89812fc8 JO |
662 | static int |
663 | parse_breakpoint_type(const char *type, struct perf_event_attr *attr) | |
1b290d67 FW |
664 | { |
665 | int i; | |
666 | ||
667 | for (i = 0; i < 3; i++) { | |
89812fc8 | 668 | if (!type || !type[i]) |
1b290d67 FW |
669 | break; |
670 | ||
7582732f JO |
671 | #define CHECK_SET_TYPE(bit) \ |
672 | do { \ | |
673 | if (attr->bp_type & bit) \ | |
674 | return -EINVAL; \ | |
675 | else \ | |
676 | attr->bp_type |= bit; \ | |
677 | } while (0) | |
678 | ||
1b290d67 FW |
679 | switch (type[i]) { |
680 | case 'r': | |
7582732f | 681 | CHECK_SET_TYPE(HW_BREAKPOINT_R); |
1b290d67 FW |
682 | break; |
683 | case 'w': | |
7582732f | 684 | CHECK_SET_TYPE(HW_BREAKPOINT_W); |
1b290d67 FW |
685 | break; |
686 | case 'x': | |
7582732f | 687 | CHECK_SET_TYPE(HW_BREAKPOINT_X); |
1b290d67 FW |
688 | break; |
689 | default: | |
89812fc8 | 690 | return -EINVAL; |
1b290d67 FW |
691 | } |
692 | } | |
89812fc8 | 693 | |
7582732f JO |
694 | #undef CHECK_SET_TYPE |
695 | ||
1b290d67 FW |
696 | if (!attr->bp_type) /* Default */ |
697 | attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; | |
698 | ||
89812fc8 | 699 | return 0; |
1b290d67 FW |
700 | } |
701 | ||
c5cd8ac0 | 702 | int parse_events_add_breakpoint(struct list_head *list, int *idx, |
3741eb9f | 703 | void *ptr, char *type, u64 len) |
1b290d67 | 704 | { |
89812fc8 | 705 | struct perf_event_attr attr; |
1b290d67 | 706 | |
89812fc8 | 707 | memset(&attr, 0, sizeof(attr)); |
9fafd98f | 708 | attr.bp_addr = (unsigned long) ptr; |
1b290d67 | 709 | |
89812fc8 JO |
710 | if (parse_breakpoint_type(type, &attr)) |
711 | return -EINVAL; | |
1b290d67 | 712 | |
3741eb9f JS |
713 | /* Provide some defaults if len is not specified */ |
714 | if (!len) { | |
715 | if (attr.bp_type == HW_BREAKPOINT_X) | |
716 | len = sizeof(long); | |
717 | else | |
718 | len = HW_BREAKPOINT_LEN_4; | |
719 | } | |
720 | ||
721 | attr.bp_len = len; | |
61c45981 | 722 | |
89812fc8 | 723 | attr.type = PERF_TYPE_BREAKPOINT; |
4a841d65 | 724 | attr.sample_period = 1; |
b908debd | 725 | |
930a2e29 | 726 | return add_event(list, idx, &attr, NULL, NULL); |
74d5b588 JSR |
727 | } |
728 | ||
3b0e371c JO |
729 | static int check_type_val(struct parse_events_term *term, |
730 | struct parse_events_error *err, | |
731 | int type) | |
732 | { | |
733 | if (type == term->type_val) | |
734 | return 0; | |
735 | ||
736 | if (err) { | |
737 | err->idx = term->err_val; | |
738 | if (type == PARSE_EVENTS__TERM_TYPE_NUM) | |
739 | err->str = strdup("expected numeric value"); | |
740 | else | |
741 | err->str = strdup("expected string value"); | |
742 | } | |
743 | return -EINVAL; | |
744 | } | |
745 | ||
0b8891a8 HK |
746 | typedef int config_term_func_t(struct perf_event_attr *attr, |
747 | struct parse_events_term *term, | |
748 | struct parse_events_error *err); | |
749 | ||
750 | static int config_term_common(struct perf_event_attr *attr, | |
751 | struct parse_events_term *term, | |
752 | struct parse_events_error *err) | |
8f707d84 | 753 | { |
3b0e371c JO |
754 | #define CHECK_TYPE_VAL(type) \ |
755 | do { \ | |
756 | if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ | |
757 | return -EINVAL; \ | |
16fa7e82 JO |
758 | } while (0) |
759 | ||
760 | switch (term->type_term) { | |
8f707d84 | 761 | case PARSE_EVENTS__TERM_TYPE_CONFIG: |
16fa7e82 | 762 | CHECK_TYPE_VAL(NUM); |
8f707d84 JO |
763 | attr->config = term->val.num; |
764 | break; | |
765 | case PARSE_EVENTS__TERM_TYPE_CONFIG1: | |
16fa7e82 | 766 | CHECK_TYPE_VAL(NUM); |
8f707d84 JO |
767 | attr->config1 = term->val.num; |
768 | break; | |
769 | case PARSE_EVENTS__TERM_TYPE_CONFIG2: | |
16fa7e82 | 770 | CHECK_TYPE_VAL(NUM); |
8f707d84 JO |
771 | attr->config2 = term->val.num; |
772 | break; | |
773 | case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: | |
16fa7e82 | 774 | CHECK_TYPE_VAL(NUM); |
8f707d84 | 775 | break; |
09af2a55 NK |
776 | case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: |
777 | CHECK_TYPE_VAL(NUM); | |
778 | break; | |
8f707d84 JO |
779 | case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: |
780 | /* | |
781 | * TODO uncomment when the field is available | |
782 | * attr->branch_sample_type = term->val.num; | |
783 | */ | |
784 | break; | |
32067712 KL |
785 | case PARSE_EVENTS__TERM_TYPE_TIME: |
786 | CHECK_TYPE_VAL(NUM); | |
787 | if (term->val.num > 1) { | |
788 | err->str = strdup("expected 0 or 1"); | |
789 | err->idx = term->err_val; | |
790 | return -EINVAL; | |
791 | } | |
792 | break; | |
d457c963 KL |
793 | case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: |
794 | CHECK_TYPE_VAL(STR); | |
795 | break; | |
796 | case PARSE_EVENTS__TERM_TYPE_STACKSIZE: | |
797 | CHECK_TYPE_VAL(NUM); | |
798 | break; | |
374ce938 WN |
799 | case PARSE_EVENTS__TERM_TYPE_INHERIT: |
800 | CHECK_TYPE_VAL(NUM); | |
801 | break; | |
802 | case PARSE_EVENTS__TERM_TYPE_NOINHERIT: | |
803 | CHECK_TYPE_VAL(NUM); | |
804 | break; | |
6b5fc39b JO |
805 | case PARSE_EVENTS__TERM_TYPE_NAME: |
806 | CHECK_TYPE_VAL(STR); | |
807 | break; | |
8f707d84 | 808 | default: |
ffeb883e HK |
809 | err->str = strdup("unknown term"); |
810 | err->idx = term->err_term; | |
811 | err->help = parse_events_formats_error_string(NULL); | |
8f707d84 JO |
812 | return -EINVAL; |
813 | } | |
16fa7e82 | 814 | |
8f707d84 | 815 | return 0; |
16fa7e82 | 816 | #undef CHECK_TYPE_VAL |
8f707d84 JO |
817 | } |
818 | ||
0b8891a8 HK |
819 | static int config_term_pmu(struct perf_event_attr *attr, |
820 | struct parse_events_term *term, | |
821 | struct parse_events_error *err) | |
822 | { | |
823 | if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER) | |
824 | /* | |
825 | * Always succeed for sysfs terms, as we dont know | |
826 | * at this point what type they need to have. | |
827 | */ | |
828 | return 0; | |
829 | else | |
830 | return config_term_common(attr, term, err); | |
831 | } | |
832 | ||
e637d177 HK |
833 | static int config_term_tracepoint(struct perf_event_attr *attr, |
834 | struct parse_events_term *term, | |
835 | struct parse_events_error *err) | |
836 | { | |
837 | switch (term->type_term) { | |
838 | case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: | |
839 | case PARSE_EVENTS__TERM_TYPE_STACKSIZE: | |
374ce938 WN |
840 | case PARSE_EVENTS__TERM_TYPE_INHERIT: |
841 | case PARSE_EVENTS__TERM_TYPE_NOINHERIT: | |
e637d177 HK |
842 | return config_term_common(attr, term, err); |
843 | default: | |
844 | if (err) { | |
845 | err->idx = term->err_term; | |
846 | err->str = strdup("unknown term"); | |
847 | err->help = strdup("valid terms: call-graph,stack-size\n"); | |
848 | } | |
849 | return -EINVAL; | |
850 | } | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
8f707d84 | 855 | static int config_attr(struct perf_event_attr *attr, |
3b0e371c | 856 | struct list_head *head, |
0b8891a8 HK |
857 | struct parse_events_error *err, |
858 | config_term_func_t config_term) | |
8f707d84 | 859 | { |
6cee6cd3 | 860 | struct parse_events_term *term; |
8f707d84 JO |
861 | |
862 | list_for_each_entry(term, head, list) | |
3b0e371c | 863 | if (config_term(attr, term, err)) |
8f707d84 JO |
864 | return -EINVAL; |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
930a2e29 JO |
869 | static int get_config_terms(struct list_head *head_config, |
870 | struct list_head *head_terms __maybe_unused) | |
871 | { | |
872 | #define ADD_CONFIG_TERM(__type, __name, __val) \ | |
873 | do { \ | |
874 | struct perf_evsel_config_term *__t; \ | |
875 | \ | |
876 | __t = zalloc(sizeof(*__t)); \ | |
877 | if (!__t) \ | |
878 | return -ENOMEM; \ | |
879 | \ | |
880 | INIT_LIST_HEAD(&__t->list); \ | |
881 | __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \ | |
882 | __t->val.__name = __val; \ | |
883 | list_add_tail(&__t->list, head_terms); \ | |
884 | } while (0) | |
885 | ||
886 | struct parse_events_term *term; | |
887 | ||
888 | list_for_each_entry(term, head_config, list) { | |
889 | switch (term->type_term) { | |
ee4c7588 JO |
890 | case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: |
891 | ADD_CONFIG_TERM(PERIOD, period, term->val.num); | |
32067712 | 892 | break; |
09af2a55 NK |
893 | case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: |
894 | ADD_CONFIG_TERM(FREQ, freq, term->val.num); | |
895 | break; | |
32067712 KL |
896 | case PARSE_EVENTS__TERM_TYPE_TIME: |
897 | ADD_CONFIG_TERM(TIME, time, term->val.num); | |
898 | break; | |
d457c963 KL |
899 | case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: |
900 | ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str); | |
901 | break; | |
902 | case PARSE_EVENTS__TERM_TYPE_STACKSIZE: | |
903 | ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num); | |
904 | break; | |
374ce938 WN |
905 | case PARSE_EVENTS__TERM_TYPE_INHERIT: |
906 | ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0); | |
907 | break; | |
908 | case PARSE_EVENTS__TERM_TYPE_NOINHERIT: | |
909 | ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1); | |
910 | break; | |
930a2e29 JO |
911 | default: |
912 | break; | |
913 | } | |
914 | } | |
915 | #undef ADD_EVSEL_CONFIG | |
916 | return 0; | |
917 | } | |
918 | ||
e637d177 HK |
919 | int parse_events_add_tracepoint(struct list_head *list, int *idx, |
920 | char *sys, char *event, | |
272ed29a | 921 | struct parse_events_error *err, |
e637d177 HK |
922 | struct list_head *head_config) |
923 | { | |
924 | if (head_config) { | |
925 | struct perf_event_attr attr; | |
926 | ||
272ed29a | 927 | if (config_attr(&attr, head_config, err, |
e637d177 HK |
928 | config_term_tracepoint)) |
929 | return -EINVAL; | |
930 | } | |
931 | ||
932 | if (strpbrk(sys, "*?")) | |
933 | return add_tracepoint_multi_sys(list, idx, sys, event, | |
272ed29a | 934 | err, head_config); |
e637d177 HK |
935 | else |
936 | return add_tracepoint_event(list, idx, sys, event, | |
272ed29a | 937 | err, head_config); |
e637d177 HK |
938 | } |
939 | ||
87d650be JO |
940 | int parse_events_add_numeric(struct parse_events_evlist *data, |
941 | struct list_head *list, | |
b527bab5 | 942 | u32 type, u64 config, |
8f707d84 | 943 | struct list_head *head_config) |
8ad8db37 | 944 | { |
89812fc8 | 945 | struct perf_event_attr attr; |
930a2e29 | 946 | LIST_HEAD(config_terms); |
61c45981 | 947 | |
89812fc8 JO |
948 | memset(&attr, 0, sizeof(attr)); |
949 | attr.type = type; | |
950 | attr.config = config; | |
8f707d84 | 951 | |
930a2e29 | 952 | if (head_config) { |
0b8891a8 HK |
953 | if (config_attr(&attr, head_config, data->error, |
954 | config_term_common)) | |
930a2e29 JO |
955 | return -EINVAL; |
956 | ||
957 | if (get_config_terms(head_config, &config_terms)) | |
958 | return -ENOMEM; | |
959 | } | |
8f707d84 | 960 | |
930a2e29 | 961 | return add_event(list, &data->idx, &attr, NULL, &config_terms); |
61c45981 | 962 | } |
8ad8db37 | 963 | |
6cee6cd3 | 964 | static int parse_events__is_name_term(struct parse_events_term *term) |
6b5fc39b JO |
965 | { |
966 | return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME; | |
967 | } | |
968 | ||
9db1763c | 969 | static char *pmu_event_name(struct list_head *head_terms) |
6b5fc39b | 970 | { |
6cee6cd3 | 971 | struct parse_events_term *term; |
6b5fc39b JO |
972 | |
973 | list_for_each_entry(term, head_terms, list) | |
974 | if (parse_events__is_name_term(term)) | |
975 | return term->val.str; | |
976 | ||
9db1763c | 977 | return NULL; |
6b5fc39b JO |
978 | } |
979 | ||
36adec85 JO |
980 | int parse_events_add_pmu(struct parse_events_evlist *data, |
981 | struct list_head *list, char *name, | |
982 | struct list_head *head_config) | |
5f537a26 JO |
983 | { |
984 | struct perf_event_attr attr; | |
46441bdc | 985 | struct perf_pmu_info info; |
5f537a26 | 986 | struct perf_pmu *pmu; |
410136f5 | 987 | struct perf_evsel *evsel; |
930a2e29 | 988 | LIST_HEAD(config_terms); |
5f537a26 JO |
989 | |
990 | pmu = perf_pmu__find(name); | |
991 | if (!pmu) | |
992 | return -EINVAL; | |
993 | ||
dc0a6202 AH |
994 | if (pmu->default_config) { |
995 | memcpy(&attr, pmu->default_config, | |
996 | sizeof(struct perf_event_attr)); | |
997 | } else { | |
998 | memset(&attr, 0, sizeof(attr)); | |
999 | } | |
5f537a26 | 1000 | |
ad962273 AH |
1001 | if (!head_config) { |
1002 | attr.type = pmu->type; | |
930a2e29 | 1003 | evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL); |
ad962273 AH |
1004 | return evsel ? 0 : -ENOMEM; |
1005 | } | |
1006 | ||
46441bdc | 1007 | if (perf_pmu__check_alias(pmu, head_config, &info)) |
a6146d50 ZY |
1008 | return -EINVAL; |
1009 | ||
5f537a26 JO |
1010 | /* |
1011 | * Configure hardcoded terms first, no need to check | |
1012 | * return value when called with fail == 0 ;) | |
1013 | */ | |
0b8891a8 | 1014 | if (config_attr(&attr, head_config, data->error, config_term_pmu)) |
c056ba6a | 1015 | return -EINVAL; |
5f537a26 | 1016 | |
930a2e29 JO |
1017 | if (get_config_terms(head_config, &config_terms)) |
1018 | return -ENOMEM; | |
1019 | ||
e64b020b | 1020 | if (perf_pmu__config(pmu, &attr, head_config, data->error)) |
5f537a26 JO |
1021 | return -EINVAL; |
1022 | ||
36adec85 | 1023 | evsel = __add_event(list, &data->idx, &attr, |
930a2e29 JO |
1024 | pmu_event_name(head_config), pmu->cpus, |
1025 | &config_terms); | |
410136f5 | 1026 | if (evsel) { |
46441bdc MF |
1027 | evsel->unit = info.unit; |
1028 | evsel->scale = info.scale; | |
044330c1 | 1029 | evsel->per_pkg = info.per_pkg; |
1d9e446b | 1030 | evsel->snapshot = info.snapshot; |
410136f5 SE |
1031 | } |
1032 | ||
1033 | return evsel ? 0 : -ENOMEM; | |
5f537a26 JO |
1034 | } |
1035 | ||
6a4bb04c JO |
1036 | int parse_events__modifier_group(struct list_head *list, |
1037 | char *event_mod) | |
89efb029 | 1038 | { |
6a4bb04c JO |
1039 | return parse_events__modifier_event(list, event_mod, true); |
1040 | } | |
1041 | ||
63dab225 | 1042 | void parse_events__set_leader(char *name, struct list_head *list) |
6a4bb04c JO |
1043 | { |
1044 | struct perf_evsel *leader; | |
1045 | ||
854f7363 WN |
1046 | if (list_empty(list)) { |
1047 | WARN_ONCE(true, "WARNING: failed to set leader: empty list"); | |
1048 | return; | |
1049 | } | |
1050 | ||
63dab225 ACM |
1051 | __perf_evlist__set_leader(list); |
1052 | leader = list_entry(list->next, struct perf_evsel, node); | |
6a4bb04c | 1053 | leader->group_name = name ? strdup(name) : NULL; |
89efb029 JO |
1054 | } |
1055 | ||
c5cd8ac0 | 1056 | /* list_event is assumed to point to malloc'ed memory */ |
5d7be90e JO |
1057 | void parse_events_update_lists(struct list_head *list_event, |
1058 | struct list_head *list_all) | |
1059 | { | |
1060 | /* | |
1061 | * Called for single event definition. Update the | |
89efb029 | 1062 | * 'all event' list, and reinit the 'single event' |
5d7be90e JO |
1063 | * list, for next event definition. |
1064 | */ | |
1065 | list_splice_tail(list_event, list_all); | |
b847cbdc | 1066 | free(list_event); |
5d7be90e JO |
1067 | } |
1068 | ||
f5b1135b JO |
1069 | struct event_modifier { |
1070 | int eu; | |
1071 | int ek; | |
1072 | int eh; | |
1073 | int eH; | |
1074 | int eG; | |
a1e12da4 | 1075 | int eI; |
f5b1135b | 1076 | int precise; |
7f94af7a | 1077 | int precise_max; |
f5b1135b | 1078 | int exclude_GH; |
3c176311 | 1079 | int sample_read; |
e9a7c414 | 1080 | int pinned; |
f5b1135b JO |
1081 | }; |
1082 | ||
1083 | static int get_event_modifier(struct event_modifier *mod, char *str, | |
1084 | struct perf_evsel *evsel) | |
61c45981 | 1085 | { |
f5b1135b JO |
1086 | int eu = evsel ? evsel->attr.exclude_user : 0; |
1087 | int ek = evsel ? evsel->attr.exclude_kernel : 0; | |
1088 | int eh = evsel ? evsel->attr.exclude_hv : 0; | |
1089 | int eH = evsel ? evsel->attr.exclude_host : 0; | |
1090 | int eG = evsel ? evsel->attr.exclude_guest : 0; | |
a1e12da4 | 1091 | int eI = evsel ? evsel->attr.exclude_idle : 0; |
f5b1135b | 1092 | int precise = evsel ? evsel->attr.precise_ip : 0; |
7f94af7a | 1093 | int precise_max = 0; |
3c176311 | 1094 | int sample_read = 0; |
e9a7c414 | 1095 | int pinned = evsel ? evsel->attr.pinned : 0; |
a21ca2ca | 1096 | |
f5b1135b JO |
1097 | int exclude = eu | ek | eh; |
1098 | int exclude_GH = evsel ? evsel->exclude_GH : 0; | |
1099 | ||
f5b1135b | 1100 | memset(mod, 0, sizeof(*mod)); |
ceb53fbf | 1101 | |
61c45981 | 1102 | while (*str) { |
ab608344 PZ |
1103 | if (*str == 'u') { |
1104 | if (!exclude) | |
1105 | exclude = eu = ek = eh = 1; | |
61c45981 | 1106 | eu = 0; |
ab608344 PZ |
1107 | } else if (*str == 'k') { |
1108 | if (!exclude) | |
1109 | exclude = eu = ek = eh = 1; | |
61c45981 | 1110 | ek = 0; |
ab608344 PZ |
1111 | } else if (*str == 'h') { |
1112 | if (!exclude) | |
1113 | exclude = eu = ek = eh = 1; | |
61c45981 | 1114 | eh = 0; |
99320cc8 JR |
1115 | } else if (*str == 'G') { |
1116 | if (!exclude_GH) | |
1117 | exclude_GH = eG = eH = 1; | |
1118 | eG = 0; | |
1119 | } else if (*str == 'H') { | |
1120 | if (!exclude_GH) | |
1121 | exclude_GH = eG = eH = 1; | |
1122 | eH = 0; | |
a1e12da4 JO |
1123 | } else if (*str == 'I') { |
1124 | eI = 1; | |
ab608344 PZ |
1125 | } else if (*str == 'p') { |
1126 | precise++; | |
1342798c DA |
1127 | /* use of precise requires exclude_guest */ |
1128 | if (!exclude_GH) | |
1129 | eG = 1; | |
7f94af7a JO |
1130 | } else if (*str == 'P') { |
1131 | precise_max = 1; | |
3c176311 JO |
1132 | } else if (*str == 'S') { |
1133 | sample_read = 1; | |
e9a7c414 ME |
1134 | } else if (*str == 'D') { |
1135 | pinned = 1; | |
ab608344 | 1136 | } else |
61c45981 | 1137 | break; |
ab608344 | 1138 | |
61c45981 | 1139 | ++str; |
5242519b | 1140 | } |
ceb53fbf | 1141 | |
89812fc8 JO |
1142 | /* |
1143 | * precise ip: | |
1144 | * | |
1145 | * 0 - SAMPLE_IP can have arbitrary skid | |
1146 | * 1 - SAMPLE_IP must have constant skid | |
1147 | * 2 - SAMPLE_IP requested to have 0 skid | |
1148 | * 3 - SAMPLE_IP must have 0 skid | |
1149 | * | |
1150 | * See also PERF_RECORD_MISC_EXACT_IP | |
1151 | */ | |
1152 | if (precise > 3) | |
1153 | return -EINVAL; | |
ceb53fbf | 1154 | |
f5b1135b JO |
1155 | mod->eu = eu; |
1156 | mod->ek = ek; | |
1157 | mod->eh = eh; | |
1158 | mod->eH = eH; | |
1159 | mod->eG = eG; | |
a1e12da4 | 1160 | mod->eI = eI; |
f5b1135b | 1161 | mod->precise = precise; |
7f94af7a | 1162 | mod->precise_max = precise_max; |
f5b1135b | 1163 | mod->exclude_GH = exclude_GH; |
3c176311 | 1164 | mod->sample_read = sample_read; |
e9a7c414 ME |
1165 | mod->pinned = pinned; |
1166 | ||
f5b1135b JO |
1167 | return 0; |
1168 | } | |
1169 | ||
534123f4 JO |
1170 | /* |
1171 | * Basic modifier sanity check to validate it contains only one | |
1172 | * instance of any modifier (apart from 'p') present. | |
1173 | */ | |
1174 | static int check_modifier(char *str) | |
1175 | { | |
1176 | char *p = str; | |
1177 | ||
1178 | /* The sizeof includes 0 byte as well. */ | |
7f94af7a | 1179 | if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1)) |
534123f4 JO |
1180 | return -1; |
1181 | ||
1182 | while (*p) { | |
1183 | if (*p != 'p' && strchr(p + 1, *p)) | |
1184 | return -1; | |
1185 | p++; | |
1186 | } | |
1187 | ||
1188 | return 0; | |
1189 | } | |
1190 | ||
f5b1135b JO |
1191 | int parse_events__modifier_event(struct list_head *list, char *str, bool add) |
1192 | { | |
1193 | struct perf_evsel *evsel; | |
1194 | struct event_modifier mod; | |
1195 | ||
1196 | if (str == NULL) | |
1197 | return 0; | |
1198 | ||
534123f4 JO |
1199 | if (check_modifier(str)) |
1200 | return -EINVAL; | |
1201 | ||
f5b1135b JO |
1202 | if (!add && get_event_modifier(&mod, str, NULL)) |
1203 | return -EINVAL; | |
1204 | ||
0050f7aa | 1205 | __evlist__for_each(list, evsel) { |
f5b1135b JO |
1206 | if (add && get_event_modifier(&mod, str, evsel)) |
1207 | return -EINVAL; | |
1208 | ||
1209 | evsel->attr.exclude_user = mod.eu; | |
1210 | evsel->attr.exclude_kernel = mod.ek; | |
1211 | evsel->attr.exclude_hv = mod.eh; | |
1212 | evsel->attr.precise_ip = mod.precise; | |
1213 | evsel->attr.exclude_host = mod.eH; | |
1214 | evsel->attr.exclude_guest = mod.eG; | |
a1e12da4 | 1215 | evsel->attr.exclude_idle = mod.eI; |
f5b1135b | 1216 | evsel->exclude_GH = mod.exclude_GH; |
3c176311 | 1217 | evsel->sample_read = mod.sample_read; |
7f94af7a | 1218 | evsel->precise_max = mod.precise_max; |
e9a7c414 ME |
1219 | |
1220 | if (perf_evsel__is_group_leader(evsel)) | |
1221 | evsel->attr.pinned = mod.pinned; | |
89812fc8 | 1222 | } |
ceb53fbf | 1223 | |
61c45981 PM |
1224 | return 0; |
1225 | } | |
8ad8db37 | 1226 | |
ac2ba9f3 RR |
1227 | int parse_events_name(struct list_head *list, char *name) |
1228 | { | |
1229 | struct perf_evsel *evsel; | |
1230 | ||
0050f7aa | 1231 | __evlist__for_each(list, evsel) { |
ac2ba9f3 RR |
1232 | if (!evsel->name) |
1233 | evsel->name = strdup(name); | |
1234 | } | |
1235 | ||
1236 | return 0; | |
1237 | } | |
1238 | ||
dcb4e102 KL |
1239 | static int |
1240 | comp_pmu(const void *p1, const void *p2) | |
1241 | { | |
1242 | struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1; | |
1243 | struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2; | |
1244 | ||
1245 | return strcmp(pmu1->symbol, pmu2->symbol); | |
1246 | } | |
1247 | ||
1248 | static void perf_pmu__parse_cleanup(void) | |
1249 | { | |
1250 | if (perf_pmu_events_list_num > 0) { | |
1251 | struct perf_pmu_event_symbol *p; | |
1252 | int i; | |
1253 | ||
1254 | for (i = 0; i < perf_pmu_events_list_num; i++) { | |
1255 | p = perf_pmu_events_list + i; | |
1256 | free(p->symbol); | |
1257 | } | |
1258 | free(perf_pmu_events_list); | |
1259 | perf_pmu_events_list = NULL; | |
1260 | perf_pmu_events_list_num = 0; | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | #define SET_SYMBOL(str, stype) \ | |
1265 | do { \ | |
1266 | p->symbol = str; \ | |
1267 | if (!p->symbol) \ | |
1268 | goto err; \ | |
1269 | p->type = stype; \ | |
1270 | } while (0) | |
1271 | ||
1272 | /* | |
1273 | * Read the pmu events list from sysfs | |
1274 | * Save it into perf_pmu_events_list | |
1275 | */ | |
1276 | static void perf_pmu__parse_init(void) | |
1277 | { | |
1278 | ||
1279 | struct perf_pmu *pmu = NULL; | |
1280 | struct perf_pmu_alias *alias; | |
1281 | int len = 0; | |
1282 | ||
1283 | pmu = perf_pmu__find("cpu"); | |
1284 | if ((pmu == NULL) || list_empty(&pmu->aliases)) { | |
1285 | perf_pmu_events_list_num = -1; | |
1286 | return; | |
1287 | } | |
1288 | list_for_each_entry(alias, &pmu->aliases, list) { | |
1289 | if (strchr(alias->name, '-')) | |
1290 | len++; | |
1291 | len++; | |
1292 | } | |
1293 | perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len); | |
1294 | if (!perf_pmu_events_list) | |
1295 | return; | |
1296 | perf_pmu_events_list_num = len; | |
1297 | ||
1298 | len = 0; | |
1299 | list_for_each_entry(alias, &pmu->aliases, list) { | |
1300 | struct perf_pmu_event_symbol *p = perf_pmu_events_list + len; | |
1301 | char *tmp = strchr(alias->name, '-'); | |
1302 | ||
1303 | if (tmp != NULL) { | |
1304 | SET_SYMBOL(strndup(alias->name, tmp - alias->name), | |
1305 | PMU_EVENT_SYMBOL_PREFIX); | |
1306 | p++; | |
1307 | SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX); | |
1308 | len += 2; | |
1309 | } else { | |
1310 | SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL); | |
1311 | len++; | |
1312 | } | |
1313 | } | |
1314 | qsort(perf_pmu_events_list, len, | |
1315 | sizeof(struct perf_pmu_event_symbol), comp_pmu); | |
1316 | ||
1317 | return; | |
1318 | err: | |
1319 | perf_pmu__parse_cleanup(); | |
1320 | } | |
1321 | ||
1322 | enum perf_pmu_event_symbol_type | |
1323 | perf_pmu__parse_check(const char *name) | |
1324 | { | |
1325 | struct perf_pmu_event_symbol p, *r; | |
1326 | ||
1327 | /* scan kernel pmu events from sysfs if needed */ | |
1328 | if (perf_pmu_events_list_num == 0) | |
1329 | perf_pmu__parse_init(); | |
1330 | /* | |
1331 | * name "cpu" could be prefix of cpu-cycles or cpu// events. | |
1332 | * cpu-cycles has been handled by hardcode. | |
1333 | * So it must be cpu// events, not kernel pmu event. | |
1334 | */ | |
1335 | if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu")) | |
1336 | return PMU_EVENT_SYMBOL_ERR; | |
1337 | ||
1338 | p.symbol = strdup(name); | |
1339 | r = bsearch(&p, perf_pmu_events_list, | |
1340 | (size_t) perf_pmu_events_list_num, | |
1341 | sizeof(struct perf_pmu_event_symbol), comp_pmu); | |
1342 | free(p.symbol); | |
1343 | return r ? r->type : PMU_EVENT_SYMBOL_ERR; | |
1344 | } | |
1345 | ||
90e2b22d | 1346 | static int parse_events__scanner(const char *str, void *data, int start_token) |
61c45981 | 1347 | { |
89812fc8 | 1348 | YY_BUFFER_STATE buffer; |
ac20de6f | 1349 | void *scanner; |
46010ab2 | 1350 | int ret; |
bcd3279f | 1351 | |
90e2b22d | 1352 | ret = parse_events_lex_init_extra(start_token, &scanner); |
ac20de6f ZY |
1353 | if (ret) |
1354 | return ret; | |
1355 | ||
1356 | buffer = parse_events__scan_string(str, scanner); | |
a21ca2ca | 1357 | |
82ba1f2f JO |
1358 | #ifdef PARSER_DEBUG |
1359 | parse_events_debug = 1; | |
1360 | #endif | |
ac20de6f ZY |
1361 | ret = parse_events_parse(data, scanner); |
1362 | ||
1363 | parse_events__flush_buffer(buffer, scanner); | |
1364 | parse_events__delete_buffer(buffer, scanner); | |
1365 | parse_events_lex_destroy(scanner); | |
1366 | return ret; | |
1367 | } | |
bcd3279f | 1368 | |
90e2b22d JO |
1369 | /* |
1370 | * parse event config string, return a list of event terms. | |
1371 | */ | |
1372 | int parse_events_terms(struct list_head *terms, const char *str) | |
1373 | { | |
23b6339b | 1374 | struct parse_events_terms data = { |
90e2b22d JO |
1375 | .terms = NULL, |
1376 | }; | |
1377 | int ret; | |
1378 | ||
1379 | ret = parse_events__scanner(str, &data, PE_START_TERMS); | |
1380 | if (!ret) { | |
1381 | list_splice(data.terms, terms); | |
74cf249d | 1382 | zfree(&data.terms); |
90e2b22d JO |
1383 | return 0; |
1384 | } | |
1385 | ||
b2c34fde AH |
1386 | if (data.terms) |
1387 | parse_events__free_terms(data.terms); | |
90e2b22d JO |
1388 | return ret; |
1389 | } | |
1390 | ||
b39b8393 JO |
1391 | int parse_events(struct perf_evlist *evlist, const char *str, |
1392 | struct parse_events_error *err) | |
ac20de6f | 1393 | { |
23b6339b | 1394 | struct parse_events_evlist data = { |
b39b8393 JO |
1395 | .list = LIST_HEAD_INIT(data.list), |
1396 | .idx = evlist->nr_entries, | |
1397 | .error = err, | |
ac20de6f ZY |
1398 | }; |
1399 | int ret; | |
bcd3279f | 1400 | |
90e2b22d | 1401 | ret = parse_events__scanner(str, &data, PE_START_EVENTS); |
dcb4e102 | 1402 | perf_pmu__parse_cleanup(); |
89812fc8 | 1403 | if (!ret) { |
15bfd2cc WN |
1404 | struct perf_evsel *last; |
1405 | ||
854f7363 WN |
1406 | if (list_empty(&data.list)) { |
1407 | WARN_ONCE(true, "WARNING: event parser found nothing"); | |
1408 | return -1; | |
1409 | } | |
1410 | ||
f114d6ef | 1411 | perf_evlist__splice_list_tail(evlist, &data.list); |
97f63e4a | 1412 | evlist->nr_groups += data.nr_groups; |
15bfd2cc WN |
1413 | last = perf_evlist__last(evlist); |
1414 | last->cmdline_group_boundary = true; | |
1415 | ||
89812fc8 JO |
1416 | return 0; |
1417 | } | |
bcd3279f | 1418 | |
5d7be90e JO |
1419 | /* |
1420 | * There are 2 users - builtin-record and builtin-test objects. | |
1421 | * Both call perf_evlist__delete in case of error, so we dont | |
1422 | * need to bother. | |
1423 | */ | |
bcd3279f | 1424 | return ret; |
8ad8db37 IM |
1425 | } |
1426 | ||
b39b8393 JO |
1427 | #define MAX_WIDTH 1000 |
1428 | static int get_term_width(void) | |
1429 | { | |
1430 | struct winsize ws; | |
1431 | ||
1432 | get_term_dimensions(&ws); | |
1433 | return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; | |
1434 | } | |
1435 | ||
1436 | static void parse_events_print_error(struct parse_events_error *err, | |
1437 | const char *event) | |
1438 | { | |
1439 | const char *str = "invalid or unsupported event: "; | |
1440 | char _buf[MAX_WIDTH]; | |
1441 | char *buf = (char *) event; | |
1442 | int idx = 0; | |
1443 | ||
1444 | if (err->str) { | |
1445 | /* -2 for extra '' in the final fprintf */ | |
1446 | int width = get_term_width() - 2; | |
1447 | int len_event = strlen(event); | |
1448 | int len_str, max_len, cut = 0; | |
1449 | ||
1450 | /* | |
1451 | * Maximum error index indent, we will cut | |
1452 | * the event string if it's bigger. | |
1453 | */ | |
141b2d31 | 1454 | int max_err_idx = 13; |
b39b8393 JO |
1455 | |
1456 | /* | |
1457 | * Let's be specific with the message when | |
1458 | * we have the precise error. | |
1459 | */ | |
1460 | str = "event syntax error: "; | |
1461 | len_str = strlen(str); | |
1462 | max_len = width - len_str; | |
1463 | ||
1464 | buf = _buf; | |
1465 | ||
1466 | /* We're cutting from the beggining. */ | |
1467 | if (err->idx > max_err_idx) | |
1468 | cut = err->idx - max_err_idx; | |
1469 | ||
1470 | strncpy(buf, event + cut, max_len); | |
1471 | ||
1472 | /* Mark cut parts with '..' on both sides. */ | |
1473 | if (cut) | |
1474 | buf[0] = buf[1] = '.'; | |
1475 | ||
1476 | if ((len_event - cut) > max_len) { | |
1477 | buf[max_len - 1] = buf[max_len - 2] = '.'; | |
1478 | buf[max_len] = 0; | |
1479 | } | |
1480 | ||
1481 | idx = len_str + err->idx - cut; | |
1482 | } | |
1483 | ||
1484 | fprintf(stderr, "%s'%s'\n", str, buf); | |
1485 | if (idx) { | |
1486 | fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str); | |
1487 | if (err->help) | |
1488 | fprintf(stderr, "\n%s\n", err->help); | |
1489 | free(err->str); | |
1490 | free(err->help); | |
1491 | } | |
1492 | ||
1493 | fprintf(stderr, "Run 'perf list' for a list of valid events\n"); | |
1494 | } | |
1495 | ||
1496 | #undef MAX_WIDTH | |
1497 | ||
f120f9d5 | 1498 | int parse_events_option(const struct option *opt, const char *str, |
1d037ca1 | 1499 | int unset __maybe_unused) |
f120f9d5 JO |
1500 | { |
1501 | struct perf_evlist *evlist = *(struct perf_evlist **)opt->value; | |
b39b8393 JO |
1502 | struct parse_events_error err = { .idx = 0, }; |
1503 | int ret = parse_events(evlist, str, &err); | |
1504 | ||
1505 | if (ret) | |
1506 | parse_events_print_error(&err, str); | |
9175ce1f | 1507 | |
9175ce1f | 1508 | return ret; |
f120f9d5 JO |
1509 | } |
1510 | ||
4ba1faa1 WN |
1511 | static int |
1512 | foreach_evsel_in_last_glob(struct perf_evlist *evlist, | |
1513 | int (*func)(struct perf_evsel *evsel, | |
1514 | const void *arg), | |
1515 | const void *arg) | |
c171b552 | 1516 | { |
69aad6f1 | 1517 | struct perf_evsel *last = NULL; |
4ba1faa1 | 1518 | int err; |
c171b552 | 1519 | |
854f7363 WN |
1520 | /* |
1521 | * Don't return when list_empty, give func a chance to report | |
1522 | * error when it found last == NULL. | |
1523 | * | |
1524 | * So no need to WARN here, let *func do this. | |
1525 | */ | |
361c99a6 | 1526 | if (evlist->nr_entries > 0) |
0c21f736 | 1527 | last = perf_evlist__last(evlist); |
69aad6f1 | 1528 | |
15bfd2cc | 1529 | do { |
4ba1faa1 WN |
1530 | err = (*func)(last, arg); |
1531 | if (err) | |
15bfd2cc | 1532 | return -1; |
4ba1faa1 WN |
1533 | if (!last) |
1534 | return 0; | |
15bfd2cc WN |
1535 | |
1536 | if (last->node.prev == &evlist->entries) | |
1537 | return 0; | |
1538 | last = list_entry(last->node.prev, struct perf_evsel, node); | |
1539 | } while (!last->cmdline_group_boundary); | |
c171b552 LZ |
1540 | |
1541 | return 0; | |
1542 | } | |
1543 | ||
4ba1faa1 WN |
1544 | static int set_filter(struct perf_evsel *evsel, const void *arg) |
1545 | { | |
1546 | const char *str = arg; | |
1547 | ||
1548 | if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) { | |
1549 | fprintf(stderr, | |
1550 | "--filter option should follow a -e tracepoint option\n"); | |
1551 | return -1; | |
1552 | } | |
1553 | ||
1554 | if (perf_evsel__append_filter(evsel, "&&", str) < 0) { | |
1555 | fprintf(stderr, | |
1556 | "not enough memory to hold filter string\n"); | |
1557 | return -1; | |
1558 | } | |
1559 | ||
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | int parse_filter(const struct option *opt, const char *str, | |
1564 | int unset __maybe_unused) | |
1565 | { | |
1566 | struct perf_evlist *evlist = *(struct perf_evlist **)opt->value; | |
1567 | ||
1568 | return foreach_evsel_in_last_glob(evlist, set_filter, | |
1569 | (const void *)str); | |
1570 | } | |
1571 | ||
1572 | static int add_exclude_perf_filter(struct perf_evsel *evsel, | |
1573 | const void *arg __maybe_unused) | |
1574 | { | |
1575 | char new_filter[64]; | |
1576 | ||
1577 | if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) { | |
1578 | fprintf(stderr, | |
1579 | "--exclude-perf option should follow a -e tracepoint option\n"); | |
1580 | return -1; | |
1581 | } | |
1582 | ||
1583 | snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); | |
1584 | ||
1585 | if (perf_evsel__append_filter(evsel, "&&", new_filter) < 0) { | |
1586 | fprintf(stderr, | |
1587 | "not enough memory to hold filter string\n"); | |
1588 | return -1; | |
1589 | } | |
1590 | ||
1591 | return 0; | |
1592 | } | |
1593 | ||
1594 | int exclude_perf(const struct option *opt, | |
1595 | const char *arg __maybe_unused, | |
1596 | int unset __maybe_unused) | |
1597 | { | |
1598 | struct perf_evlist *evlist = *(struct perf_evlist **)opt->value; | |
1599 | ||
1600 | return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, | |
1601 | NULL); | |
1602 | } | |
1603 | ||
86847b62 | 1604 | static const char * const event_type_descriptors[] = { |
86847b62 TG |
1605 | "Hardware event", |
1606 | "Software event", | |
1607 | "Tracepoint event", | |
1608 | "Hardware cache event", | |
41bdcb23 LW |
1609 | "Raw hardware event descriptor", |
1610 | "Hardware breakpoint", | |
86847b62 TG |
1611 | }; |
1612 | ||
ab0e4800 YS |
1613 | static int cmp_string(const void *a, const void *b) |
1614 | { | |
1615 | const char * const *as = a; | |
1616 | const char * const *bs = b; | |
1617 | ||
1618 | return strcmp(*as, *bs); | |
1619 | } | |
1620 | ||
f6bdafef JB |
1621 | /* |
1622 | * Print the events from <debugfs_mount_point>/tracing/events | |
1623 | */ | |
1624 | ||
a3277d2d FW |
1625 | void print_tracepoint_events(const char *subsys_glob, const char *event_glob, |
1626 | bool name_only) | |
f6bdafef JB |
1627 | { |
1628 | DIR *sys_dir, *evt_dir; | |
1629 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
f6bdafef | 1630 | char evt_path[MAXPATHLEN]; |
725b1368 | 1631 | char dir_path[MAXPATHLEN]; |
ab0e4800 YS |
1632 | char **evt_list = NULL; |
1633 | unsigned int evt_i = 0, evt_num = 0; | |
1634 | bool evt_num_known = false; | |
f6bdafef | 1635 | |
ab0e4800 | 1636 | restart: |
ebf294bf | 1637 | sys_dir = opendir(tracing_events_path); |
f6bdafef | 1638 | if (!sys_dir) |
725b1368 | 1639 | return; |
6b58e7f1 | 1640 | |
ab0e4800 YS |
1641 | if (evt_num_known) { |
1642 | evt_list = zalloc(sizeof(char *) * evt_num); | |
1643 | if (!evt_list) | |
1644 | goto out_close_sys_dir; | |
1645 | } | |
1646 | ||
6b58e7f1 | 1647 | for_each_subsystem(sys_dir, sys_dirent, sys_next) { |
48000a1a | 1648 | if (subsys_glob != NULL && |
668b8788 ACM |
1649 | !strglobmatch(sys_dirent.d_name, subsys_glob)) |
1650 | continue; | |
725b1368 | 1651 | |
ebf294bf | 1652 | snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path, |
725b1368 ED |
1653 | sys_dirent.d_name); |
1654 | evt_dir = opendir(dir_path); | |
1655 | if (!evt_dir) | |
6b58e7f1 | 1656 | continue; |
725b1368 | 1657 | |
6b58e7f1 | 1658 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { |
48000a1a | 1659 | if (event_glob != NULL && |
668b8788 ACM |
1660 | !strglobmatch(evt_dirent.d_name, event_glob)) |
1661 | continue; | |
1662 | ||
ab0e4800 YS |
1663 | if (!evt_num_known) { |
1664 | evt_num++; | |
a3277d2d FW |
1665 | continue; |
1666 | } | |
1667 | ||
f6bdafef JB |
1668 | snprintf(evt_path, MAXPATHLEN, "%s:%s", |
1669 | sys_dirent.d_name, evt_dirent.d_name); | |
ab0e4800 YS |
1670 | |
1671 | evt_list[evt_i] = strdup(evt_path); | |
1672 | if (evt_list[evt_i] == NULL) | |
1673 | goto out_close_evt_dir; | |
1674 | evt_i++; | |
f6bdafef JB |
1675 | } |
1676 | closedir(evt_dir); | |
1677 | } | |
f6bdafef | 1678 | closedir(sys_dir); |
ab0e4800 YS |
1679 | |
1680 | if (!evt_num_known) { | |
1681 | evt_num_known = true; | |
1682 | goto restart; | |
1683 | } | |
1684 | qsort(evt_list, evt_num, sizeof(char *), cmp_string); | |
1685 | evt_i = 0; | |
1686 | while (evt_i < evt_num) { | |
1687 | if (name_only) { | |
1688 | printf("%s ", evt_list[evt_i++]); | |
1689 | continue; | |
1690 | } | |
1691 | printf(" %-50s [%s]\n", evt_list[evt_i++], | |
1692 | event_type_descriptors[PERF_TYPE_TRACEPOINT]); | |
1693 | } | |
dfc431cb | 1694 | if (evt_num && pager_in_use()) |
ab0e4800 YS |
1695 | printf("\n"); |
1696 | ||
1697 | out_free: | |
1698 | evt_num = evt_i; | |
1699 | for (evt_i = 0; evt_i < evt_num; evt_i++) | |
1700 | zfree(&evt_list[evt_i]); | |
1701 | zfree(&evt_list); | |
1702 | return; | |
1703 | ||
1704 | out_close_evt_dir: | |
1705 | closedir(evt_dir); | |
1706 | out_close_sys_dir: | |
1707 | closedir(sys_dir); | |
1708 | ||
1709 | printf("FATAL: not enough memory to print %s\n", | |
1710 | event_type_descriptors[PERF_TYPE_TRACEPOINT]); | |
1711 | if (evt_list) | |
1712 | goto out_free; | |
f6bdafef JB |
1713 | } |
1714 | ||
20c457b8 TR |
1715 | /* |
1716 | * Check whether event is in <debugfs_mount_point>/tracing/events | |
1717 | */ | |
1718 | ||
1719 | int is_valid_tracepoint(const char *event_string) | |
1720 | { | |
1721 | DIR *sys_dir, *evt_dir; | |
1722 | struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; | |
1723 | char evt_path[MAXPATHLEN]; | |
1724 | char dir_path[MAXPATHLEN]; | |
1725 | ||
ebf294bf | 1726 | sys_dir = opendir(tracing_events_path); |
20c457b8 TR |
1727 | if (!sys_dir) |
1728 | return 0; | |
1729 | ||
1730 | for_each_subsystem(sys_dir, sys_dirent, sys_next) { | |
1731 | ||
ebf294bf | 1732 | snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path, |
20c457b8 TR |
1733 | sys_dirent.d_name); |
1734 | evt_dir = opendir(dir_path); | |
1735 | if (!evt_dir) | |
1736 | continue; | |
1737 | ||
1738 | for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { | |
1739 | snprintf(evt_path, MAXPATHLEN, "%s:%s", | |
1740 | sys_dirent.d_name, evt_dirent.d_name); | |
1741 | if (!strcmp(evt_path, event_string)) { | |
1742 | closedir(evt_dir); | |
1743 | closedir(sys_dir); | |
1744 | return 1; | |
1745 | } | |
1746 | } | |
1747 | closedir(evt_dir); | |
1748 | } | |
1749 | closedir(sys_dir); | |
1750 | return 0; | |
1751 | } | |
1752 | ||
b41f1cec NK |
1753 | static bool is_event_supported(u8 type, unsigned config) |
1754 | { | |
1755 | bool ret = true; | |
88fee52e | 1756 | int open_return; |
b41f1cec NK |
1757 | struct perf_evsel *evsel; |
1758 | struct perf_event_attr attr = { | |
1759 | .type = type, | |
1760 | .config = config, | |
1761 | .disabled = 1, | |
b41f1cec NK |
1762 | }; |
1763 | struct { | |
1764 | struct thread_map map; | |
1765 | int threads[1]; | |
1766 | } tmap = { | |
1767 | .map.nr = 1, | |
1768 | .threads = { 0 }, | |
1769 | }; | |
1770 | ||
ef503831 | 1771 | evsel = perf_evsel__new(&attr); |
b41f1cec | 1772 | if (evsel) { |
88fee52e VW |
1773 | open_return = perf_evsel__open(evsel, NULL, &tmap.map); |
1774 | ret = open_return >= 0; | |
1775 | ||
1776 | if (open_return == -EACCES) { | |
1777 | /* | |
1778 | * This happens if the paranoid value | |
1779 | * /proc/sys/kernel/perf_event_paranoid is set to 2 | |
1780 | * Re-run with exclude_kernel set; we don't do that | |
1781 | * by default as some ARM machines do not support it. | |
1782 | * | |
1783 | */ | |
1784 | evsel->attr.exclude_kernel = 1; | |
1785 | ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0; | |
1786 | } | |
b41f1cec NK |
1787 | perf_evsel__delete(evsel); |
1788 | } | |
1789 | ||
1790 | return ret; | |
1791 | } | |
1792 | ||
a3277d2d | 1793 | int print_hwcache_events(const char *event_glob, bool name_only) |
668b8788 | 1794 | { |
ab0e4800 | 1795 | unsigned int type, op, i, evt_i = 0, evt_num = 0; |
0b668bc9 | 1796 | char name[64]; |
ab0e4800 YS |
1797 | char **evt_list = NULL; |
1798 | bool evt_num_known = false; | |
1799 | ||
1800 | restart: | |
1801 | if (evt_num_known) { | |
1802 | evt_list = zalloc(sizeof(char *) * evt_num); | |
1803 | if (!evt_list) | |
1804 | goto out_enomem; | |
1805 | } | |
668b8788 ACM |
1806 | |
1807 | for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { | |
1808 | for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { | |
1809 | /* skip invalid cache type */ | |
0b668bc9 | 1810 | if (!perf_evsel__is_cache_op_valid(type, op)) |
668b8788 ACM |
1811 | continue; |
1812 | ||
1813 | for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { | |
0b668bc9 ACM |
1814 | __perf_evsel__hw_cache_type_op_res_name(type, op, i, |
1815 | name, sizeof(name)); | |
947b4ad1 | 1816 | if (event_glob != NULL && !strglobmatch(name, event_glob)) |
668b8788 ACM |
1817 | continue; |
1818 | ||
b41f1cec NK |
1819 | if (!is_event_supported(PERF_TYPE_HW_CACHE, |
1820 | type | (op << 8) | (i << 16))) | |
1821 | continue; | |
1822 | ||
ab0e4800 YS |
1823 | if (!evt_num_known) { |
1824 | evt_num++; | |
1825 | continue; | |
1826 | } | |
1827 | ||
1828 | evt_list[evt_i] = strdup(name); | |
1829 | if (evt_list[evt_i] == NULL) | |
1830 | goto out_enomem; | |
1831 | evt_i++; | |
668b8788 ACM |
1832 | } |
1833 | } | |
1834 | } | |
1835 | ||
ab0e4800 YS |
1836 | if (!evt_num_known) { |
1837 | evt_num_known = true; | |
1838 | goto restart; | |
1839 | } | |
1840 | qsort(evt_list, evt_num, sizeof(char *), cmp_string); | |
1841 | evt_i = 0; | |
1842 | while (evt_i < evt_num) { | |
1843 | if (name_only) { | |
1844 | printf("%s ", evt_list[evt_i++]); | |
1845 | continue; | |
1846 | } | |
1847 | printf(" %-50s [%s]\n", evt_list[evt_i++], | |
1848 | event_type_descriptors[PERF_TYPE_HW_CACHE]); | |
1849 | } | |
dfc431cb | 1850 | if (evt_num && pager_in_use()) |
dc098b35 | 1851 | printf("\n"); |
ab0e4800 YS |
1852 | |
1853 | out_free: | |
1854 | evt_num = evt_i; | |
1855 | for (evt_i = 0; evt_i < evt_num; evt_i++) | |
1856 | zfree(&evt_list[evt_i]); | |
1857 | zfree(&evt_list); | |
1858 | return evt_num; | |
1859 | ||
1860 | out_enomem: | |
1861 | printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]); | |
1862 | if (evt_list) | |
1863 | goto out_free; | |
1864 | return evt_num; | |
668b8788 ACM |
1865 | } |
1866 | ||
705750f2 | 1867 | void print_symbol_events(const char *event_glob, unsigned type, |
a3277d2d FW |
1868 | struct event_symbol *syms, unsigned max, |
1869 | bool name_only) | |
8ad8db37 | 1870 | { |
ab0e4800 | 1871 | unsigned int i, evt_i = 0, evt_num = 0; |
947b4ad1 | 1872 | char name[MAX_NAME_LEN]; |
ab0e4800 YS |
1873 | char **evt_list = NULL; |
1874 | bool evt_num_known = false; | |
1875 | ||
1876 | restart: | |
1877 | if (evt_num_known) { | |
1878 | evt_list = zalloc(sizeof(char *) * evt_num); | |
1879 | if (!evt_list) | |
1880 | goto out_enomem; | |
1881 | syms -= max; | |
1882 | } | |
8ad8db37 | 1883 | |
1dc12760 | 1884 | for (i = 0; i < max; i++, syms++) { |
668b8788 | 1885 | |
e37df6c7 | 1886 | if (event_glob != NULL && syms->symbol != NULL && |
668b8788 ACM |
1887 | !(strglobmatch(syms->symbol, event_glob) || |
1888 | (syms->alias && strglobmatch(syms->alias, event_glob)))) | |
1889 | continue; | |
8ad8db37 | 1890 | |
b41f1cec NK |
1891 | if (!is_event_supported(type, i)) |
1892 | continue; | |
1893 | ||
ab0e4800 YS |
1894 | if (!evt_num_known) { |
1895 | evt_num++; | |
a3277d2d FW |
1896 | continue; |
1897 | } | |
1898 | ||
ab0e4800 | 1899 | if (!name_only && strlen(syms->alias)) |
947b4ad1 | 1900 | snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias); |
74d5b588 | 1901 | else |
947b4ad1 | 1902 | strncpy(name, syms->symbol, MAX_NAME_LEN); |
8ad8db37 | 1903 | |
ab0e4800 YS |
1904 | evt_list[evt_i] = strdup(name); |
1905 | if (evt_list[evt_i] == NULL) | |
1906 | goto out_enomem; | |
1907 | evt_i++; | |
8ad8db37 IM |
1908 | } |
1909 | ||
ab0e4800 YS |
1910 | if (!evt_num_known) { |
1911 | evt_num_known = true; | |
1912 | goto restart; | |
1913 | } | |
1914 | qsort(evt_list, evt_num, sizeof(char *), cmp_string); | |
1915 | evt_i = 0; | |
1916 | while (evt_i < evt_num) { | |
1917 | if (name_only) { | |
1918 | printf("%s ", evt_list[evt_i++]); | |
1919 | continue; | |
1920 | } | |
1921 | printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]); | |
1922 | } | |
dfc431cb | 1923 | if (evt_num && pager_in_use()) |
668b8788 | 1924 | printf("\n"); |
ab0e4800 YS |
1925 | |
1926 | out_free: | |
1927 | evt_num = evt_i; | |
1928 | for (evt_i = 0; evt_i < evt_num; evt_i++) | |
1929 | zfree(&evt_list[evt_i]); | |
1930 | zfree(&evt_list); | |
1931 | return; | |
1932 | ||
1933 | out_enomem: | |
1934 | printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]); | |
1935 | if (evt_list) | |
1936 | goto out_free; | |
1dc12760 JO |
1937 | } |
1938 | ||
1939 | /* | |
1940 | * Print the help text for the event symbols: | |
1941 | */ | |
a3277d2d | 1942 | void print_events(const char *event_glob, bool name_only) |
1dc12760 | 1943 | { |
1dc12760 | 1944 | print_symbol_events(event_glob, PERF_TYPE_HARDWARE, |
a3277d2d | 1945 | event_symbols_hw, PERF_COUNT_HW_MAX, name_only); |
1dc12760 JO |
1946 | |
1947 | print_symbol_events(event_glob, PERF_TYPE_SOFTWARE, | |
a3277d2d | 1948 | event_symbols_sw, PERF_COUNT_SW_MAX, name_only); |
1dc12760 | 1949 | |
a3277d2d | 1950 | print_hwcache_events(event_glob, name_only); |
668b8788 | 1951 | |
dc098b35 AK |
1952 | print_pmu_events(event_glob, name_only); |
1953 | ||
668b8788 ACM |
1954 | if (event_glob != NULL) |
1955 | return; | |
73c24cb8 | 1956 | |
a3277d2d | 1957 | if (!name_only) { |
a3277d2d FW |
1958 | printf(" %-50s [%s]\n", |
1959 | "rNNN", | |
1960 | event_type_descriptors[PERF_TYPE_RAW]); | |
1961 | printf(" %-50s [%s]\n", | |
1962 | "cpu/t1=v1[,t2=v2,t3 ...]/modifier", | |
1963 | event_type_descriptors[PERF_TYPE_RAW]); | |
dfc431cb ACM |
1964 | if (pager_in_use()) |
1965 | printf(" (see 'man perf-list' on how to encode it)\n\n"); | |
a3277d2d FW |
1966 | |
1967 | printf(" %-50s [%s]\n", | |
3741eb9f | 1968 | "mem:<addr>[/len][:access]", |
41bdcb23 | 1969 | event_type_descriptors[PERF_TYPE_BREAKPOINT]); |
dfc431cb ACM |
1970 | if (pager_in_use()) |
1971 | printf("\n"); | |
a3277d2d | 1972 | } |
1b290d67 | 1973 | |
a3277d2d | 1974 | print_tracepoint_events(NULL, NULL, name_only); |
8ad8db37 | 1975 | } |
8f707d84 | 1976 | |
6cee6cd3 | 1977 | int parse_events__is_hardcoded_term(struct parse_events_term *term) |
8f707d84 | 1978 | { |
16fa7e82 | 1979 | return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; |
8f707d84 JO |
1980 | } |
1981 | ||
6cee6cd3 | 1982 | static int new_term(struct parse_events_term **_term, int type_val, |
16fa7e82 | 1983 | int type_term, char *config, |
cecf3a2e | 1984 | char *str, u64 num, int err_term, int err_val) |
8f707d84 | 1985 | { |
6cee6cd3 | 1986 | struct parse_events_term *term; |
8f707d84 JO |
1987 | |
1988 | term = zalloc(sizeof(*term)); | |
1989 | if (!term) | |
1990 | return -ENOMEM; | |
1991 | ||
1992 | INIT_LIST_HEAD(&term->list); | |
16fa7e82 JO |
1993 | term->type_val = type_val; |
1994 | term->type_term = type_term; | |
8f707d84 | 1995 | term->config = config; |
cecf3a2e JO |
1996 | term->err_term = err_term; |
1997 | term->err_val = err_val; | |
8f707d84 | 1998 | |
16fa7e82 | 1999 | switch (type_val) { |
8f707d84 JO |
2000 | case PARSE_EVENTS__TERM_TYPE_NUM: |
2001 | term->val.num = num; | |
2002 | break; | |
2003 | case PARSE_EVENTS__TERM_TYPE_STR: | |
2004 | term->val.str = str; | |
2005 | break; | |
2006 | default: | |
4be8be6b | 2007 | free(term); |
8f707d84 JO |
2008 | return -EINVAL; |
2009 | } | |
2010 | ||
2011 | *_term = term; | |
2012 | return 0; | |
2013 | } | |
2014 | ||
6cee6cd3 | 2015 | int parse_events_term__num(struct parse_events_term **term, |
cecf3a2e | 2016 | int type_term, char *config, u64 num, |
bb78ce7d | 2017 | void *loc_term_, void *loc_val_) |
16fa7e82 | 2018 | { |
bb78ce7d AH |
2019 | YYLTYPE *loc_term = loc_term_; |
2020 | YYLTYPE *loc_val = loc_val_; | |
2021 | ||
16fa7e82 | 2022 | return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term, |
cecf3a2e JO |
2023 | config, NULL, num, |
2024 | loc_term ? loc_term->first_column : 0, | |
2025 | loc_val ? loc_val->first_column : 0); | |
16fa7e82 JO |
2026 | } |
2027 | ||
6cee6cd3 | 2028 | int parse_events_term__str(struct parse_events_term **term, |
cecf3a2e | 2029 | int type_term, char *config, char *str, |
bb78ce7d | 2030 | void *loc_term_, void *loc_val_) |
16fa7e82 | 2031 | { |
bb78ce7d AH |
2032 | YYLTYPE *loc_term = loc_term_; |
2033 | YYLTYPE *loc_val = loc_val_; | |
2034 | ||
16fa7e82 | 2035 | return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term, |
cecf3a2e JO |
2036 | config, str, 0, |
2037 | loc_term ? loc_term->first_column : 0, | |
2038 | loc_val ? loc_val->first_column : 0); | |
16fa7e82 JO |
2039 | } |
2040 | ||
6cee6cd3 | 2041 | int parse_events_term__sym_hw(struct parse_events_term **term, |
1d33d6dc JO |
2042 | char *config, unsigned idx) |
2043 | { | |
2044 | struct event_symbol *sym; | |
2045 | ||
2046 | BUG_ON(idx >= PERF_COUNT_HW_MAX); | |
2047 | sym = &event_symbols_hw[idx]; | |
2048 | ||
2049 | if (config) | |
2050 | return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, | |
2051 | PARSE_EVENTS__TERM_TYPE_USER, config, | |
cecf3a2e | 2052 | (char *) sym->symbol, 0, 0, 0); |
1d33d6dc JO |
2053 | else |
2054 | return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, | |
2055 | PARSE_EVENTS__TERM_TYPE_USER, | |
cecf3a2e JO |
2056 | (char *) "event", (char *) sym->symbol, |
2057 | 0, 0, 0); | |
1d33d6dc JO |
2058 | } |
2059 | ||
6cee6cd3 ACM |
2060 | int parse_events_term__clone(struct parse_events_term **new, |
2061 | struct parse_events_term *term) | |
a6146d50 ZY |
2062 | { |
2063 | return new_term(new, term->type_val, term->type_term, term->config, | |
cecf3a2e JO |
2064 | term->val.str, term->val.num, |
2065 | term->err_term, term->err_val); | |
a6146d50 ZY |
2066 | } |
2067 | ||
8f707d84 JO |
2068 | void parse_events__free_terms(struct list_head *terms) |
2069 | { | |
6cee6cd3 | 2070 | struct parse_events_term *term, *h; |
8f707d84 JO |
2071 | |
2072 | list_for_each_entry_safe(term, h, terms, list) | |
2073 | free(term); | |
8f707d84 | 2074 | } |
b39b8393 JO |
2075 | |
2076 | void parse_events_evlist_error(struct parse_events_evlist *data, | |
2077 | int idx, const char *str) | |
2078 | { | |
2079 | struct parse_events_error *err = data->error; | |
2080 | ||
a6ced2be AH |
2081 | if (!err) |
2082 | return; | |
b39b8393 JO |
2083 | err->idx = idx; |
2084 | err->str = strdup(str); | |
2085 | WARN_ONCE(!err->str, "WARNING: failed to allocate error string"); | |
2086 | } | |
ffeb883e HK |
2087 | |
2088 | /* | |
2089 | * Return string contains valid config terms of an event. | |
2090 | * @additional_terms: For terms such as PMU sysfs terms. | |
2091 | */ | |
2092 | char *parse_events_formats_error_string(char *additional_terms) | |
2093 | { | |
2094 | char *str; | |
2095 | static const char *static_terms = "config,config1,config2,name," | |
2096 | "period,freq,branch_type,time," | |
2097 | "call-graph,stack-size\n"; | |
2098 | ||
2099 | /* valid terms */ | |
2100 | if (additional_terms) { | |
2101 | if (!asprintf(&str, "valid terms: %s,%s", | |
2102 | additional_terms, static_terms)) | |
2103 | goto fail; | |
2104 | } else { | |
2105 | if (!asprintf(&str, "valid terms: %s", static_terms)) | |
2106 | goto fail; | |
2107 | } | |
2108 | return str; | |
2109 | ||
2110 | fail: | |
2111 | return NULL; | |
2112 | } |