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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
cd82a32e | 2 | #include <linux/list.h> |
c5de47f2 | 3 | #include <linux/compiler.h> |
cd82a32e | 4 | #include <sys/types.h> |
a43783ae | 5 | #include <errno.h> |
c23c2a0f | 6 | #include <fcntl.h> |
7a8ef4c4 | 7 | #include <sys/stat.h> |
cd82a32e JO |
8 | #include <unistd.h> |
9 | #include <stdio.h> | |
dc0a6202 | 10 | #include <stdbool.h> |
7d4bdab5 | 11 | #include <stdarg.h> |
cd82a32e | 12 | #include <dirent.h> |
cd0cfad7 | 13 | #include <api/fs/fs.h> |
410136f5 | 14 | #include <locale.h> |
fbc2844e | 15 | #include <regex.h> |
cd82a32e JO |
16 | #include "util.h" |
17 | #include "pmu.h" | |
18 | #include "parse-events.h" | |
7ae92e74 | 19 | #include "cpumap.h" |
933f82ff SB |
20 | #include "header.h" |
21 | #include "pmu-events/pmu-events.h" | |
61eb2eb4 | 22 | #include "cache.h" |
a067558e | 23 | #include "string2.h" |
cd82a32e | 24 | |
ab1bf653 ACM |
25 | struct perf_pmu_format { |
26 | char *name; | |
27 | int value; | |
28 | DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); | |
29 | struct list_head list; | |
30 | }; | |
31 | ||
50a9667c RR |
32 | #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/" |
33 | ||
cd82a32e JO |
34 | int perf_pmu_parse(struct list_head *list, char *name); |
35 | extern FILE *perf_pmu_in; | |
36 | ||
37 | static LIST_HEAD(pmus); | |
38 | ||
39 | /* | |
40 | * Parse & process all the sysfs attributes located under | |
41 | * the directory specified in 'dir' parameter. | |
42 | */ | |
cff7f956 | 43 | int perf_pmu__format_parse(char *dir, struct list_head *head) |
cd82a32e JO |
44 | { |
45 | struct dirent *evt_ent; | |
46 | DIR *format_dir; | |
47 | int ret = 0; | |
48 | ||
49 | format_dir = opendir(dir); | |
50 | if (!format_dir) | |
51 | return -EINVAL; | |
52 | ||
53 | while (!ret && (evt_ent = readdir(format_dir))) { | |
54 | char path[PATH_MAX]; | |
55 | char *name = evt_ent->d_name; | |
56 | FILE *file; | |
57 | ||
58 | if (!strcmp(name, ".") || !strcmp(name, "..")) | |
59 | continue; | |
60 | ||
61 | snprintf(path, PATH_MAX, "%s/%s", dir, name); | |
62 | ||
63 | ret = -EINVAL; | |
64 | file = fopen(path, "r"); | |
65 | if (!file) | |
66 | break; | |
67 | ||
68 | perf_pmu_in = file; | |
69 | ret = perf_pmu_parse(head, name); | |
70 | fclose(file); | |
71 | } | |
72 | ||
73 | closedir(format_dir); | |
74 | return ret; | |
75 | } | |
76 | ||
77 | /* | |
78 | * Reading/parsing the default pmu format definition, which should be | |
79 | * located at: | |
80 | * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes. | |
81 | */ | |
b6b96fb4 | 82 | static int pmu_format(const char *name, struct list_head *format) |
cd82a32e JO |
83 | { |
84 | struct stat st; | |
85 | char path[PATH_MAX]; | |
cf38fada | 86 | const char *sysfs = sysfs__mountpoint(); |
cd82a32e | 87 | |
cd82a32e JO |
88 | if (!sysfs) |
89 | return -1; | |
90 | ||
91 | snprintf(path, PATH_MAX, | |
50a9667c | 92 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name); |
cd82a32e JO |
93 | |
94 | if (stat(path, &st) < 0) | |
9bc8f9fe | 95 | return 0; /* no error if format does not exist */ |
cd82a32e | 96 | |
cff7f956 | 97 | if (perf_pmu__format_parse(path, format)) |
cd82a32e JO |
98 | return -1; |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
d02fc6bc | 103 | static int convert_scale(const char *scale, char **end, double *sval) |
410136f5 | 104 | { |
ea8f75f9 | 105 | char *lc; |
d02fc6bc | 106 | int ret = 0; |
9ecae065 | 107 | |
410136f5 SE |
108 | /* |
109 | * save current locale | |
110 | */ | |
111 | lc = setlocale(LC_NUMERIC, NULL); | |
112 | ||
f9a5978a JO |
113 | /* |
114 | * The lc string may be allocated in static storage, | |
115 | * so get a dynamic copy to make it survive setlocale | |
116 | * call below. | |
117 | */ | |
118 | lc = strdup(lc); | |
119 | if (!lc) { | |
120 | ret = -ENOMEM; | |
d02fc6bc | 121 | goto out; |
f9a5978a JO |
122 | } |
123 | ||
410136f5 SE |
124 | /* |
125 | * force to C locale to ensure kernel | |
126 | * scale string is converted correctly. | |
127 | * kernel uses default C locale. | |
128 | */ | |
129 | setlocale(LC_NUMERIC, "C"); | |
130 | ||
d02fc6bc | 131 | *sval = strtod(scale, end); |
410136f5 | 132 | |
d02fc6bc | 133 | out: |
410136f5 SE |
134 | /* restore locale */ |
135 | setlocale(LC_NUMERIC, lc); | |
ea8f75f9 | 136 | free(lc); |
d02fc6bc AK |
137 | return ret; |
138 | } | |
139 | ||
140 | static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name) | |
141 | { | |
142 | struct stat st; | |
143 | ssize_t sret; | |
144 | char scale[128]; | |
145 | int fd, ret = -1; | |
146 | char path[PATH_MAX]; | |
147 | ||
148 | snprintf(path, PATH_MAX, "%s/%s.scale", dir, name); | |
149 | ||
150 | fd = open(path, O_RDONLY); | |
151 | if (fd == -1) | |
152 | return -1; | |
153 | ||
154 | if (fstat(fd, &st) < 0) | |
155 | goto error; | |
156 | ||
157 | sret = read(fd, scale, sizeof(scale)-1); | |
158 | if (sret < 0) | |
159 | goto error; | |
160 | ||
161 | if (scale[sret - 1] == '\n') | |
162 | scale[sret - 1] = '\0'; | |
163 | else | |
164 | scale[sret] = '\0'; | |
f9a5978a | 165 | |
d02fc6bc | 166 | ret = convert_scale(scale, NULL, &alias->scale); |
410136f5 SE |
167 | error: |
168 | close(fd); | |
169 | return ret; | |
170 | } | |
171 | ||
172 | static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name) | |
173 | { | |
174 | char path[PATH_MAX]; | |
175 | ssize_t sret; | |
176 | int fd; | |
177 | ||
178 | snprintf(path, PATH_MAX, "%s/%s.unit", dir, name); | |
179 | ||
180 | fd = open(path, O_RDONLY); | |
181 | if (fd == -1) | |
182 | return -1; | |
183 | ||
d85ce830 | 184 | sret = read(fd, alias->unit, UNIT_MAX_LEN); |
410136f5 SE |
185 | if (sret < 0) |
186 | goto error; | |
187 | ||
188 | close(fd); | |
189 | ||
9ecae065 MS |
190 | if (alias->unit[sret - 1] == '\n') |
191 | alias->unit[sret - 1] = '\0'; | |
192 | else | |
193 | alias->unit[sret] = '\0'; | |
410136f5 SE |
194 | |
195 | return 0; | |
196 | error: | |
197 | close(fd); | |
198 | alias->unit[0] = '\0'; | |
199 | return -1; | |
200 | } | |
201 | ||
044330c1 MF |
202 | static int |
203 | perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name) | |
204 | { | |
205 | char path[PATH_MAX]; | |
206 | int fd; | |
207 | ||
208 | snprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name); | |
209 | ||
210 | fd = open(path, O_RDONLY); | |
211 | if (fd == -1) | |
212 | return -1; | |
213 | ||
214 | close(fd); | |
215 | ||
216 | alias->per_pkg = true; | |
217 | return 0; | |
218 | } | |
219 | ||
1d9e446b JO |
220 | static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias, |
221 | char *dir, char *name) | |
222 | { | |
223 | char path[PATH_MAX]; | |
224 | int fd; | |
225 | ||
226 | snprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name); | |
227 | ||
228 | fd = open(path, O_RDONLY); | |
229 | if (fd == -1) | |
230 | return -1; | |
231 | ||
232 | alias->snapshot = true; | |
233 | close(fd); | |
234 | return 0; | |
235 | } | |
236 | ||
70c646e0 | 237 | static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name, |
fedb2b51 AK |
238 | char *desc, char *val, |
239 | char *long_desc, char *topic, | |
00636c3b | 240 | char *unit, char *perpkg, |
96284814 AK |
241 | char *metric_expr, |
242 | char *metric_name) | |
a6146d50 | 243 | { |
5c6ccc37 | 244 | struct perf_pmu_alias *alias; |
a6146d50 | 245 | int ret; |
fedb2b51 | 246 | int num; |
a6146d50 | 247 | |
a6146d50 ZY |
248 | alias = malloc(sizeof(*alias)); |
249 | if (!alias) | |
250 | return -ENOMEM; | |
251 | ||
252 | INIT_LIST_HEAD(&alias->terms); | |
410136f5 SE |
253 | alias->scale = 1.0; |
254 | alias->unit[0] = '\0'; | |
044330c1 | 255 | alias->per_pkg = false; |
84530920 | 256 | alias->snapshot = false; |
410136f5 | 257 | |
70c646e0 | 258 | ret = parse_events_terms(&alias->terms, val); |
a6146d50 | 259 | if (ret) { |
70c646e0 | 260 | pr_err("Cannot parse alias %s: %d\n", val, ret); |
a6146d50 ZY |
261 | free(alias); |
262 | return ret; | |
263 | } | |
264 | ||
265 | alias->name = strdup(name); | |
70c646e0 SB |
266 | if (dir) { |
267 | /* | |
268 | * load unit name and scale if available | |
269 | */ | |
270 | perf_pmu__parse_unit(alias, dir, name); | |
271 | perf_pmu__parse_scale(alias, dir, name); | |
272 | perf_pmu__parse_per_pkg(alias, dir, name); | |
273 | perf_pmu__parse_snapshot(alias, dir, name); | |
274 | } | |
410136f5 | 275 | |
00636c3b | 276 | alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL; |
96284814 | 277 | alias->metric_name = metric_name ? strdup(metric_name): NULL; |
08e60ed1 | 278 | alias->desc = desc ? strdup(desc) : NULL; |
c8d6828a SB |
279 | alias->long_desc = long_desc ? strdup(long_desc) : |
280 | desc ? strdup(desc) : NULL; | |
dd5f1036 | 281 | alias->topic = topic ? strdup(topic) : NULL; |
fedb2b51 AK |
282 | if (unit) { |
283 | if (convert_scale(unit, &unit, &alias->scale) < 0) | |
284 | return -1; | |
285 | snprintf(alias->unit, sizeof(alias->unit), "%s", unit); | |
286 | } | |
287 | alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1; | |
f2361024 AK |
288 | alias->str = strdup(val); |
289 | ||
a6146d50 | 290 | list_add_tail(&alias->list, list); |
410136f5 | 291 | |
a6146d50 ZY |
292 | return 0; |
293 | } | |
294 | ||
70c646e0 SB |
295 | static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file) |
296 | { | |
297 | char buf[256]; | |
298 | int ret; | |
299 | ||
300 | ret = fread(buf, 1, sizeof(buf), file); | |
301 | if (ret == 0) | |
302 | return -EINVAL; | |
303 | ||
304 | buf[ret] = 0; | |
305 | ||
ea23ac73 TR |
306 | /* Remove trailing newline from sysfs file */ |
307 | rtrim(buf); | |
308 | ||
fedb2b51 | 309 | return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL, |
96284814 | 310 | NULL, NULL, NULL); |
70c646e0 SB |
311 | } |
312 | ||
46441bdc MF |
313 | static inline bool pmu_alias_info_file(char *name) |
314 | { | |
315 | size_t len; | |
316 | ||
317 | len = strlen(name); | |
318 | if (len > 5 && !strcmp(name + len - 5, ".unit")) | |
319 | return true; | |
320 | if (len > 6 && !strcmp(name + len - 6, ".scale")) | |
321 | return true; | |
044330c1 MF |
322 | if (len > 8 && !strcmp(name + len - 8, ".per-pkg")) |
323 | return true; | |
1d9e446b JO |
324 | if (len > 9 && !strcmp(name + len - 9, ".snapshot")) |
325 | return true; | |
46441bdc MF |
326 | |
327 | return false; | |
328 | } | |
329 | ||
a6146d50 ZY |
330 | /* |
331 | * Process all the sysfs attributes located under the directory | |
332 | * specified in 'dir' parameter. | |
333 | */ | |
334 | static int pmu_aliases_parse(char *dir, struct list_head *head) | |
335 | { | |
336 | struct dirent *evt_ent; | |
337 | DIR *event_dir; | |
a6146d50 ZY |
338 | |
339 | event_dir = opendir(dir); | |
340 | if (!event_dir) | |
341 | return -EINVAL; | |
342 | ||
940db6dc | 343 | while ((evt_ent = readdir(event_dir))) { |
a6146d50 ZY |
344 | char path[PATH_MAX]; |
345 | char *name = evt_ent->d_name; | |
346 | FILE *file; | |
347 | ||
348 | if (!strcmp(name, ".") || !strcmp(name, "..")) | |
349 | continue; | |
350 | ||
410136f5 | 351 | /* |
46441bdc | 352 | * skip info files parsed in perf_pmu__new_alias() |
410136f5 | 353 | */ |
46441bdc | 354 | if (pmu_alias_info_file(name)) |
410136f5 SE |
355 | continue; |
356 | ||
77f18153 | 357 | scnprintf(path, PATH_MAX, "%s/%s", dir, name); |
a6146d50 | 358 | |
a6146d50 | 359 | file = fopen(path, "r"); |
940db6dc AK |
360 | if (!file) { |
361 | pr_debug("Cannot open %s\n", path); | |
362 | continue; | |
363 | } | |
410136f5 | 364 | |
940db6dc AK |
365 | if (perf_pmu__new_alias(head, dir, name, file) < 0) |
366 | pr_debug("Cannot set up %s\n", name); | |
a6146d50 ZY |
367 | fclose(file); |
368 | } | |
369 | ||
370 | closedir(event_dir); | |
940db6dc | 371 | return 0; |
a6146d50 ZY |
372 | } |
373 | ||
374 | /* | |
375 | * Reading the pmu event aliases definition, which should be located at: | |
376 | * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes. | |
377 | */ | |
b6b96fb4 | 378 | static int pmu_aliases(const char *name, struct list_head *head) |
a6146d50 ZY |
379 | { |
380 | struct stat st; | |
381 | char path[PATH_MAX]; | |
cf38fada | 382 | const char *sysfs = sysfs__mountpoint(); |
a6146d50 | 383 | |
a6146d50 ZY |
384 | if (!sysfs) |
385 | return -1; | |
386 | ||
387 | snprintf(path, PATH_MAX, | |
388 | "%s/bus/event_source/devices/%s/events", sysfs, name); | |
389 | ||
390 | if (stat(path, &st) < 0) | |
3fded963 | 391 | return 0; /* no error if 'events' does not exist */ |
a6146d50 ZY |
392 | |
393 | if (pmu_aliases_parse(path, head)) | |
394 | return -1; | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
5c6ccc37 | 399 | static int pmu_alias_terms(struct perf_pmu_alias *alias, |
a6146d50 ZY |
400 | struct list_head *terms) |
401 | { | |
7c2f8164 | 402 | struct parse_events_term *term, *cloned; |
a6146d50 ZY |
403 | LIST_HEAD(list); |
404 | int ret; | |
405 | ||
406 | list_for_each_entry(term, &alias->terms, list) { | |
7c2f8164 | 407 | ret = parse_events_term__clone(&cloned, term); |
a6146d50 | 408 | if (ret) { |
682dc24c | 409 | parse_events_terms__purge(&list); |
a6146d50 ZY |
410 | return ret; |
411 | } | |
c2f1cead AK |
412 | /* |
413 | * Weak terms don't override command line options, | |
414 | * which we don't want for implicit terms in aliases. | |
415 | */ | |
416 | cloned->weak = true; | |
7c2f8164 | 417 | list_add_tail(&cloned->list, &list); |
a6146d50 ZY |
418 | } |
419 | list_splice(&list, terms); | |
420 | return 0; | |
421 | } | |
422 | ||
cd82a32e JO |
423 | /* |
424 | * Reading/parsing the default pmu type value, which should be | |
425 | * located at: | |
426 | * /sys/bus/event_source/devices/<dev>/type as sysfs attribute. | |
427 | */ | |
b6b96fb4 | 428 | static int pmu_type(const char *name, __u32 *type) |
cd82a32e JO |
429 | { |
430 | struct stat st; | |
431 | char path[PATH_MAX]; | |
cd82a32e JO |
432 | FILE *file; |
433 | int ret = 0; | |
cf38fada | 434 | const char *sysfs = sysfs__mountpoint(); |
cd82a32e | 435 | |
cd82a32e JO |
436 | if (!sysfs) |
437 | return -1; | |
438 | ||
439 | snprintf(path, PATH_MAX, | |
50a9667c | 440 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name); |
cd82a32e JO |
441 | |
442 | if (stat(path, &st) < 0) | |
443 | return -1; | |
444 | ||
445 | file = fopen(path, "r"); | |
446 | if (!file) | |
447 | return -EINVAL; | |
448 | ||
449 | if (1 != fscanf(file, "%u", type)) | |
450 | ret = -1; | |
451 | ||
452 | fclose(file); | |
453 | return ret; | |
454 | } | |
455 | ||
50a9667c RR |
456 | /* Add all pmus in sysfs to pmu list: */ |
457 | static void pmu_read_sysfs(void) | |
458 | { | |
459 | char path[PATH_MAX]; | |
50a9667c RR |
460 | DIR *dir; |
461 | struct dirent *dent; | |
cf38fada | 462 | const char *sysfs = sysfs__mountpoint(); |
50a9667c | 463 | |
50a9667c RR |
464 | if (!sysfs) |
465 | return; | |
466 | ||
467 | snprintf(path, PATH_MAX, | |
468 | "%s" EVENT_SOURCE_DEVICE_PATH, sysfs); | |
469 | ||
470 | dir = opendir(path); | |
471 | if (!dir) | |
472 | return; | |
473 | ||
474 | while ((dent = readdir(dir))) { | |
475 | if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) | |
476 | continue; | |
477 | /* add to static LIST_HEAD(pmus): */ | |
478 | perf_pmu__find(dent->d_name); | |
479 | } | |
480 | ||
481 | closedir(dir); | |
482 | } | |
483 | ||
66ec1191 MR |
484 | static struct cpu_map *__pmu_cpumask(const char *path) |
485 | { | |
486 | FILE *file; | |
487 | struct cpu_map *cpus; | |
488 | ||
489 | file = fopen(path, "r"); | |
490 | if (!file) | |
491 | return NULL; | |
492 | ||
493 | cpus = cpu_map__read(file); | |
494 | fclose(file); | |
495 | return cpus; | |
496 | } | |
497 | ||
498 | /* | |
499 | * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64) | |
500 | * may have a "cpus" file. | |
501 | */ | |
502 | #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask" | |
503 | #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus" | |
504 | ||
b6b96fb4 | 505 | static struct cpu_map *pmu_cpumask(const char *name) |
7ae92e74 | 506 | { |
7ae92e74 | 507 | char path[PATH_MAX]; |
7ae92e74 | 508 | struct cpu_map *cpus; |
cf38fada | 509 | const char *sysfs = sysfs__mountpoint(); |
7e3fcffe | 510 | const char *templates[] = { |
66ec1191 MR |
511 | CPUS_TEMPLATE_UNCORE, |
512 | CPUS_TEMPLATE_CPU, | |
513 | NULL | |
7e3fcffe MR |
514 | }; |
515 | const char **template; | |
7ae92e74 | 516 | |
7ae92e74 YZ |
517 | if (!sysfs) |
518 | return NULL; | |
519 | ||
7e3fcffe MR |
520 | for (template = templates; *template; template++) { |
521 | snprintf(path, PATH_MAX, *template, sysfs, name); | |
66ec1191 MR |
522 | cpus = __pmu_cpumask(path); |
523 | if (cpus) | |
524 | return cpus; | |
7e3fcffe | 525 | } |
7ae92e74 | 526 | |
66ec1191 MR |
527 | return NULL; |
528 | } | |
7ae92e74 | 529 | |
66ec1191 MR |
530 | static bool pmu_is_uncore(const char *name) |
531 | { | |
532 | char path[PATH_MAX]; | |
533 | struct cpu_map *cpus; | |
534 | const char *sysfs = sysfs__mountpoint(); | |
7ae92e74 | 535 | |
66ec1191 MR |
536 | snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name); |
537 | cpus = __pmu_cpumask(path); | |
538 | cpu_map__put(cpus); | |
539 | ||
540 | return !!cpus; | |
7ae92e74 YZ |
541 | } |
542 | ||
14b22ae0 GK |
543 | /* |
544 | * PMU CORE devices have different name other than cpu in sysfs on some | |
292c34c1 KL |
545 | * platforms. |
546 | * Looking for possible sysfs files to identify the arm core device. | |
14b22ae0 | 547 | */ |
292c34c1 | 548 | static int is_arm_pmu_core(const char *name) |
14b22ae0 GK |
549 | { |
550 | struct stat st; | |
551 | char path[PATH_MAX]; | |
552 | const char *sysfs = sysfs__mountpoint(); | |
553 | ||
554 | if (!sysfs) | |
555 | return 0; | |
556 | ||
14b22ae0 GK |
557 | /* Look for cpu sysfs (specific to arm) */ |
558 | scnprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/cpus", | |
559 | sysfs, name); | |
560 | if (stat(path, &st) == 0) | |
561 | return 1; | |
562 | ||
038586c3 TR |
563 | /* Look for cpu sysfs (specific to s390) */ |
564 | scnprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s", | |
565 | sysfs, name); | |
566 | if (stat(path, &st) == 0 && !strncmp(name, "cpum_", 5)) | |
567 | return 1; | |
568 | ||
14b22ae0 GK |
569 | return 0; |
570 | } | |
571 | ||
933f82ff SB |
572 | /* |
573 | * Return the CPU id as a raw string. | |
574 | * | |
575 | * Each architecture should provide a more precise id string that | |
576 | * can be use to match the architecture's "mapfile". | |
577 | */ | |
54e32dc0 | 578 | char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused) |
933f82ff SB |
579 | { |
580 | return NULL; | |
581 | } | |
582 | ||
4cb7d3ec TR |
583 | /* Return zero when the cpuid from the mapfile.csv matches the |
584 | * cpuid string generated on this platform. | |
585 | * Otherwise return non-zero. | |
586 | */ | |
ce04abfb | 587 | int strcmp_cpuid_str(const char *mapcpuid, const char *cpuid) |
4cb7d3ec TR |
588 | { |
589 | regex_t re; | |
590 | regmatch_t pmatch[1]; | |
591 | int match; | |
592 | ||
593 | if (regcomp(&re, mapcpuid, REG_EXTENDED) != 0) { | |
594 | /* Warn unable to generate match particular string. */ | |
595 | pr_info("Invalid regular expression %s\n", mapcpuid); | |
596 | return 1; | |
597 | } | |
598 | ||
599 | match = !regexec(&re, cpuid, 1, pmatch, 0); | |
600 | regfree(&re); | |
601 | if (match) { | |
602 | size_t match_len = (pmatch[0].rm_eo - pmatch[0].rm_so); | |
603 | ||
604 | /* Verify the entire string matched. */ | |
605 | if (match_len == strlen(cpuid)) | |
606 | return 0; | |
607 | } | |
608 | return 1; | |
609 | } | |
610 | ||
54e32dc0 | 611 | static char *perf_pmu__getcpuid(struct perf_pmu *pmu) |
933f82ff | 612 | { |
933f82ff | 613 | char *cpuid; |
fb967063 | 614 | static bool printed; |
933f82ff | 615 | |
fc06e2a5 AK |
616 | cpuid = getenv("PERF_CPUID"); |
617 | if (cpuid) | |
618 | cpuid = strdup(cpuid); | |
619 | if (!cpuid) | |
54e32dc0 | 620 | cpuid = get_cpuid_str(pmu); |
933f82ff | 621 | if (!cpuid) |
d77ade9f | 622 | return NULL; |
933f82ff | 623 | |
fb967063 AK |
624 | if (!printed) { |
625 | pr_debug("Using CPUID %s\n", cpuid); | |
626 | printed = true; | |
627 | } | |
d77ade9f AK |
628 | return cpuid; |
629 | } | |
630 | ||
54e32dc0 | 631 | struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu) |
d77ade9f AK |
632 | { |
633 | struct pmu_events_map *map; | |
54e32dc0 | 634 | char *cpuid = perf_pmu__getcpuid(pmu); |
d77ade9f | 635 | int i; |
fc06e2a5 | 636 | |
de3d0f12 GK |
637 | /* on some platforms which uses cpus map, cpuid can be NULL for |
638 | * PMUs other than CORE PMUs. | |
639 | */ | |
640 | if (!cpuid) | |
641 | return NULL; | |
642 | ||
933f82ff | 643 | i = 0; |
d77ade9f | 644 | for (;;) { |
933f82ff | 645 | map = &pmu_events_map[i++]; |
d77ade9f AK |
646 | if (!map->table) { |
647 | map = NULL; | |
648 | break; | |
649 | } | |
933f82ff | 650 | |
4cb7d3ec | 651 | if (!strcmp_cpuid_str(map->cpuid, cpuid)) |
933f82ff SB |
652 | break; |
653 | } | |
d77ade9f AK |
654 | free(cpuid); |
655 | return map; | |
656 | } | |
657 | ||
658 | /* | |
659 | * From the pmu_events_map, find the table of PMU events that corresponds | |
660 | * to the current running CPU. Then, add all PMU events from that table | |
661 | * as aliases. | |
662 | */ | |
54e32dc0 | 663 | static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu) |
d77ade9f AK |
664 | { |
665 | int i; | |
666 | struct pmu_events_map *map; | |
667 | struct pmu_event *pe; | |
54e32dc0 | 668 | const char *name = pmu->name; |
292c34c1 | 669 | const char *pname; |
d77ade9f | 670 | |
54e32dc0 | 671 | map = perf_pmu__find_map(pmu); |
d77ade9f AK |
672 | if (!map) |
673 | return; | |
933f82ff SB |
674 | |
675 | /* | |
676 | * Found a matching PMU events table. Create aliases | |
677 | */ | |
678 | i = 0; | |
679 | while (1) { | |
fedb2b51 | 680 | |
933f82ff | 681 | pe = &map->table[i++]; |
b18f3e36 AK |
682 | if (!pe->name) { |
683 | if (pe->metric_group || pe->metric_name) | |
684 | continue; | |
933f82ff | 685 | break; |
b18f3e36 | 686 | } |
933f82ff | 687 | |
292c34c1 KL |
688 | if (!is_arm_pmu_core(name)) { |
689 | pname = pe->pmu ? pe->pmu : "cpu"; | |
690 | if (strncmp(pname, name, strlen(pname))) | |
14b22ae0 GK |
691 | continue; |
692 | } | |
fedb2b51 | 693 | |
933f82ff SB |
694 | /* need type casts to override 'const' */ |
695 | __perf_pmu__new_alias(head, NULL, (char *)pe->name, | |
c8d6828a | 696 | (char *)pe->desc, (char *)pe->event, |
fedb2b51 | 697 | (char *)pe->long_desc, (char *)pe->topic, |
00636c3b | 698 | (char *)pe->unit, (char *)pe->perpkg, |
96284814 AK |
699 | (char *)pe->metric_expr, |
700 | (char *)pe->metric_name); | |
933f82ff | 701 | } |
933f82ff SB |
702 | } |
703 | ||
c5de47f2 | 704 | struct perf_event_attr * __weak |
dc0a6202 AH |
705 | perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) |
706 | { | |
707 | return NULL; | |
708 | } | |
709 | ||
b6b96fb4 | 710 | static struct perf_pmu *pmu_lookup(const char *name) |
cd82a32e JO |
711 | { |
712 | struct perf_pmu *pmu; | |
713 | LIST_HEAD(format); | |
a6146d50 | 714 | LIST_HEAD(aliases); |
cd82a32e JO |
715 | __u32 type; |
716 | ||
717 | /* | |
718 | * The pmu data we store & need consists of the pmu | |
719 | * type value and format definitions. Load both right | |
720 | * now. | |
721 | */ | |
722 | if (pmu_format(name, &format)) | |
723 | return NULL; | |
724 | ||
15b22ed3 AK |
725 | /* |
726 | * Check the type first to avoid unnecessary work. | |
727 | */ | |
728 | if (pmu_type(name, &type)) | |
3fded963 JO |
729 | return NULL; |
730 | ||
15b22ed3 | 731 | if (pmu_aliases(name, &aliases)) |
cd82a32e JO |
732 | return NULL; |
733 | ||
734 | pmu = zalloc(sizeof(*pmu)); | |
735 | if (!pmu) | |
736 | return NULL; | |
737 | ||
7ae92e74 | 738 | pmu->cpus = pmu_cpumask(name); |
54e32dc0 GK |
739 | pmu->name = strdup(name); |
740 | pmu->type = type; | |
66ec1191 | 741 | pmu->is_uncore = pmu_is_uncore(name); |
54e32dc0 | 742 | pmu_add_cpu_aliases(&aliases, pmu); |
66ec1191 | 743 | |
cd82a32e | 744 | INIT_LIST_HEAD(&pmu->format); |
a6146d50 | 745 | INIT_LIST_HEAD(&pmu->aliases); |
cd82a32e | 746 | list_splice(&format, &pmu->format); |
a6146d50 | 747 | list_splice(&aliases, &pmu->aliases); |
9bc8f9fe | 748 | list_add_tail(&pmu->list, &pmus); |
dc0a6202 AH |
749 | |
750 | pmu->default_config = perf_pmu__get_default_config(pmu); | |
751 | ||
cd82a32e JO |
752 | return pmu; |
753 | } | |
754 | ||
b6b96fb4 | 755 | static struct perf_pmu *pmu_find(const char *name) |
cd82a32e JO |
756 | { |
757 | struct perf_pmu *pmu; | |
758 | ||
759 | list_for_each_entry(pmu, &pmus, list) | |
760 | if (!strcmp(pmu->name, name)) | |
761 | return pmu; | |
762 | ||
763 | return NULL; | |
764 | } | |
765 | ||
50a9667c RR |
766 | struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu) |
767 | { | |
768 | /* | |
769 | * pmu iterator: If pmu is NULL, we start at the begin, | |
770 | * otherwise return the next pmu. Returns NULL on end. | |
771 | */ | |
772 | if (!pmu) { | |
773 | pmu_read_sysfs(); | |
774 | pmu = list_prepare_entry(pmu, &pmus, list); | |
775 | } | |
776 | list_for_each_entry_continue(pmu, &pmus, list) | |
777 | return pmu; | |
778 | return NULL; | |
779 | } | |
780 | ||
b6b96fb4 | 781 | struct perf_pmu *perf_pmu__find(const char *name) |
cd82a32e JO |
782 | { |
783 | struct perf_pmu *pmu; | |
784 | ||
785 | /* | |
786 | * Once PMU is loaded it stays in the list, | |
787 | * so we keep us from multiple reading/parsing | |
788 | * the pmu format definitions. | |
789 | */ | |
790 | pmu = pmu_find(name); | |
791 | if (pmu) | |
792 | return pmu; | |
793 | ||
794 | return pmu_lookup(name); | |
795 | } | |
796 | ||
5c6ccc37 | 797 | static struct perf_pmu_format * |
09ff6071 | 798 | pmu_find_format(struct list_head *formats, const char *name) |
cd82a32e | 799 | { |
5c6ccc37 | 800 | struct perf_pmu_format *format; |
cd82a32e JO |
801 | |
802 | list_for_each_entry(format, formats, list) | |
803 | if (!strcmp(format->name, name)) | |
804 | return format; | |
805 | ||
806 | return NULL; | |
807 | } | |
808 | ||
09ff6071 AH |
809 | __u64 perf_pmu__format_bits(struct list_head *formats, const char *name) |
810 | { | |
811 | struct perf_pmu_format *format = pmu_find_format(formats, name); | |
812 | __u64 bits = 0; | |
813 | int fbit; | |
814 | ||
815 | if (!format) | |
816 | return 0; | |
817 | ||
818 | for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS) | |
819 | bits |= 1ULL << fbit; | |
820 | ||
821 | return bits; | |
822 | } | |
823 | ||
cd82a32e | 824 | /* |
dc0a6202 | 825 | * Sets value based on the format definition (format parameter) |
cd82a32e | 826 | * and unformated value (value parameter). |
cd82a32e | 827 | */ |
dc0a6202 AH |
828 | static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, |
829 | bool zero) | |
cd82a32e JO |
830 | { |
831 | unsigned long fbit, vbit; | |
cd82a32e JO |
832 | |
833 | for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) { | |
834 | ||
835 | if (!test_bit(fbit, format)) | |
836 | continue; | |
837 | ||
dc0a6202 AH |
838 | if (value & (1llu << vbit++)) |
839 | *v |= (1llu << fbit); | |
840 | else if (zero) | |
841 | *v &= ~(1llu << fbit); | |
cd82a32e | 842 | } |
cd82a32e JO |
843 | } |
844 | ||
0efe6b67 AH |
845 | static __u64 pmu_format_max_value(const unsigned long *format) |
846 | { | |
ac0e2cd5 KL |
847 | __u64 w = 0; |
848 | int fbit; | |
0efe6b67 | 849 | |
ac0e2cd5 KL |
850 | for_each_set_bit(fbit, format, PERF_PMU_FORMAT_BITS) |
851 | w |= (1ULL << fbit); | |
852 | ||
853 | return w; | |
0efe6b67 AH |
854 | } |
855 | ||
688d4dfc CS |
856 | /* |
857 | * Term is a string term, and might be a param-term. Try to look up it's value | |
858 | * in the remaining terms. | |
859 | * - We have a term like "base-or-format-term=param-term", | |
860 | * - We need to find the value supplied for "param-term" (with param-term named | |
861 | * in a config string) later on in the term list. | |
862 | */ | |
863 | static int pmu_resolve_param_term(struct parse_events_term *term, | |
864 | struct list_head *head_terms, | |
865 | __u64 *value) | |
866 | { | |
867 | struct parse_events_term *t; | |
868 | ||
869 | list_for_each_entry(t, head_terms, list) { | |
870 | if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { | |
871 | if (!strcmp(t->config, term->config)) { | |
872 | t->used = true; | |
873 | *value = t->val.num; | |
874 | return 0; | |
875 | } | |
876 | } | |
877 | } | |
878 | ||
bb963e16 | 879 | if (verbose > 0) |
688d4dfc CS |
880 | printf("Required parameter '%s' not specified\n", term->config); |
881 | ||
882 | return -1; | |
883 | } | |
884 | ||
ffeb883e | 885 | static char *pmu_formats_string(struct list_head *formats) |
e64b020b JO |
886 | { |
887 | struct perf_pmu_format *format; | |
11db4e29 MH |
888 | char *str = NULL; |
889 | struct strbuf buf = STRBUF_INIT; | |
e64b020b JO |
890 | unsigned i = 0; |
891 | ||
ffeb883e | 892 | if (!formats) |
e64b020b JO |
893 | return NULL; |
894 | ||
895 | /* sysfs exported terms */ | |
ffeb883e | 896 | list_for_each_entry(format, formats, list) |
11db4e29 MH |
897 | if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0) |
898 | goto error; | |
e64b020b | 899 | |
ffeb883e | 900 | str = strbuf_detach(&buf, NULL); |
11db4e29 | 901 | error: |
ffeb883e | 902 | strbuf_release(&buf); |
e64b020b | 903 | |
e64b020b | 904 | return str; |
e64b020b JO |
905 | } |
906 | ||
cd82a32e JO |
907 | /* |
908 | * Setup one of config[12] attr members based on the | |
88aca8d9 | 909 | * user input data - term parameter. |
cd82a32e JO |
910 | */ |
911 | static int pmu_config_term(struct list_head *formats, | |
912 | struct perf_event_attr *attr, | |
dc0a6202 | 913 | struct parse_events_term *term, |
688d4dfc | 914 | struct list_head *head_terms, |
e64b020b | 915 | bool zero, struct parse_events_error *err) |
cd82a32e | 916 | { |
5c6ccc37 | 917 | struct perf_pmu_format *format; |
cd82a32e | 918 | __u64 *vp; |
0efe6b67 | 919 | __u64 val, max_val; |
688d4dfc CS |
920 | |
921 | /* | |
922 | * If this is a parameter we've already used for parameterized-eval, | |
923 | * skip it in normal eval. | |
924 | */ | |
925 | if (term->used) | |
926 | return 0; | |
cd82a32e JO |
927 | |
928 | /* | |
cd82a32e JO |
929 | * Hardcoded terms should be already in, so nothing |
930 | * to be done for them. | |
931 | */ | |
932 | if (parse_events__is_hardcoded_term(term)) | |
933 | return 0; | |
934 | ||
cd82a32e | 935 | format = pmu_find_format(formats, term->config); |
688d4dfc | 936 | if (!format) { |
bb963e16 | 937 | if (verbose > 0) |
688d4dfc | 938 | printf("Invalid event/parameter '%s'\n", term->config); |
e64b020b | 939 | if (err) { |
ffeb883e HK |
940 | char *pmu_term = pmu_formats_string(formats); |
941 | ||
e64b020b JO |
942 | err->idx = term->err_term; |
943 | err->str = strdup("unknown term"); | |
ffeb883e HK |
944 | err->help = parse_events_formats_error_string(pmu_term); |
945 | free(pmu_term); | |
e64b020b | 946 | } |
cd82a32e | 947 | return -EINVAL; |
688d4dfc | 948 | } |
cd82a32e JO |
949 | |
950 | switch (format->value) { | |
951 | case PERF_PMU_FORMAT_VALUE_CONFIG: | |
952 | vp = &attr->config; | |
953 | break; | |
954 | case PERF_PMU_FORMAT_VALUE_CONFIG1: | |
955 | vp = &attr->config1; | |
956 | break; | |
957 | case PERF_PMU_FORMAT_VALUE_CONFIG2: | |
958 | vp = &attr->config2; | |
959 | break; | |
960 | default: | |
961 | return -EINVAL; | |
962 | } | |
963 | ||
16fa7e82 | 964 | /* |
688d4dfc CS |
965 | * Either directly use a numeric term, or try to translate string terms |
966 | * using event parameters. | |
16fa7e82 | 967 | */ |
99e7138e JO |
968 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { |
969 | if (term->no_value && | |
970 | bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) { | |
971 | if (err) { | |
972 | err->idx = term->err_val; | |
973 | err->str = strdup("no value assigned for term"); | |
974 | } | |
975 | return -EINVAL; | |
976 | } | |
977 | ||
688d4dfc | 978 | val = term->val.num; |
99e7138e | 979 | } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { |
688d4dfc | 980 | if (strcmp(term->val.str, "?")) { |
bb963e16 | 981 | if (verbose > 0) { |
688d4dfc CS |
982 | pr_info("Invalid sysfs entry %s=%s\n", |
983 | term->config, term->val.str); | |
e64b020b JO |
984 | } |
985 | if (err) { | |
986 | err->idx = term->err_val; | |
987 | err->str = strdup("expected numeric value"); | |
988 | } | |
688d4dfc CS |
989 | return -EINVAL; |
990 | } | |
991 | ||
992 | if (pmu_resolve_param_term(term, head_terms, &val)) | |
993 | return -EINVAL; | |
994 | } else | |
995 | return -EINVAL; | |
996 | ||
0efe6b67 AH |
997 | max_val = pmu_format_max_value(format->bits); |
998 | if (val > max_val) { | |
999 | if (err) { | |
1000 | err->idx = term->err_val; | |
1001 | if (asprintf(&err->str, | |
1002 | "value too big for format, maximum is %llu", | |
1003 | (unsigned long long)max_val) < 0) | |
1004 | err->str = strdup("value too big for format"); | |
1005 | return -EINVAL; | |
1006 | } | |
1007 | /* | |
1008 | * Assume we don't care if !err, in which case the value will be | |
1009 | * silently truncated. | |
1010 | */ | |
1011 | } | |
1012 | ||
688d4dfc | 1013 | pmu_format_value(format->bits, val, vp, zero); |
cd82a32e JO |
1014 | return 0; |
1015 | } | |
1016 | ||
cff7f956 JO |
1017 | int perf_pmu__config_terms(struct list_head *formats, |
1018 | struct perf_event_attr *attr, | |
dc0a6202 | 1019 | struct list_head *head_terms, |
e64b020b | 1020 | bool zero, struct parse_events_error *err) |
cd82a32e | 1021 | { |
6cee6cd3 | 1022 | struct parse_events_term *term; |
cd82a32e | 1023 | |
688d4dfc | 1024 | list_for_each_entry(term, head_terms, list) { |
e64b020b JO |
1025 | if (pmu_config_term(formats, attr, term, head_terms, |
1026 | zero, err)) | |
cd82a32e | 1027 | return -EINVAL; |
688d4dfc | 1028 | } |
cd82a32e JO |
1029 | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * Configures event's 'attr' parameter based on the: | |
1035 | * 1) users input - specified in terms parameter | |
1036 | * 2) pmu format definitions - specified by pmu parameter | |
1037 | */ | |
1038 | int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, | |
e64b020b JO |
1039 | struct list_head *head_terms, |
1040 | struct parse_events_error *err) | |
cd82a32e | 1041 | { |
dc0a6202 AH |
1042 | bool zero = !!pmu->default_config; |
1043 | ||
cd82a32e | 1044 | attr->type = pmu->type; |
e64b020b JO |
1045 | return perf_pmu__config_terms(&pmu->format, attr, head_terms, |
1046 | zero, err); | |
cd82a32e JO |
1047 | } |
1048 | ||
5c6ccc37 ACM |
1049 | static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, |
1050 | struct parse_events_term *term) | |
a6146d50 | 1051 | { |
5c6ccc37 | 1052 | struct perf_pmu_alias *alias; |
a6146d50 ZY |
1053 | char *name; |
1054 | ||
1055 | if (parse_events__is_hardcoded_term(term)) | |
1056 | return NULL; | |
1057 | ||
1058 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { | |
1059 | if (term->val.num != 1) | |
1060 | return NULL; | |
1061 | if (pmu_find_format(&pmu->format, term->config)) | |
1062 | return NULL; | |
1063 | name = term->config; | |
1064 | } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { | |
1065 | if (strcasecmp(term->config, "event")) | |
1066 | return NULL; | |
1067 | name = term->val.str; | |
1068 | } else { | |
1069 | return NULL; | |
1070 | } | |
1071 | ||
1072 | list_for_each_entry(alias, &pmu->aliases, list) { | |
1073 | if (!strcasecmp(alias->name, name)) | |
1074 | return alias; | |
1075 | } | |
1076 | return NULL; | |
1077 | } | |
1078 | ||
410136f5 | 1079 | |
1d9e446b JO |
1080 | static int check_info_data(struct perf_pmu_alias *alias, |
1081 | struct perf_pmu_info *info) | |
410136f5 SE |
1082 | { |
1083 | /* | |
1084 | * Only one term in event definition can | |
1d9e446b JO |
1085 | * define unit, scale and snapshot, fail |
1086 | * if there's more than one. | |
410136f5 | 1087 | */ |
b30a7d1f | 1088 | if ((info->unit && alias->unit[0]) || |
1d9e446b JO |
1089 | (info->scale && alias->scale) || |
1090 | (info->snapshot && alias->snapshot)) | |
410136f5 SE |
1091 | return -EINVAL; |
1092 | ||
b30a7d1f | 1093 | if (alias->unit[0]) |
1d9e446b | 1094 | info->unit = alias->unit; |
410136f5 SE |
1095 | |
1096 | if (alias->scale) | |
1d9e446b JO |
1097 | info->scale = alias->scale; |
1098 | ||
1099 | if (alias->snapshot) | |
1100 | info->snapshot = alias->snapshot; | |
410136f5 SE |
1101 | |
1102 | return 0; | |
1103 | } | |
1104 | ||
a6146d50 ZY |
1105 | /* |
1106 | * Find alias in the terms list and replace it with the terms | |
1107 | * defined for the alias | |
1108 | */ | |
410136f5 | 1109 | int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, |
46441bdc | 1110 | struct perf_pmu_info *info) |
a6146d50 | 1111 | { |
6cee6cd3 | 1112 | struct parse_events_term *term, *h; |
5c6ccc37 | 1113 | struct perf_pmu_alias *alias; |
a6146d50 ZY |
1114 | int ret; |
1115 | ||
044330c1 MF |
1116 | info->per_pkg = false; |
1117 | ||
8a398897 SE |
1118 | /* |
1119 | * Mark unit and scale as not set | |
1120 | * (different from default values, see below) | |
1121 | */ | |
1d9e446b JO |
1122 | info->unit = NULL; |
1123 | info->scale = 0.0; | |
1124 | info->snapshot = false; | |
37932c18 | 1125 | info->metric_expr = NULL; |
96284814 | 1126 | info->metric_name = NULL; |
410136f5 | 1127 | |
a6146d50 ZY |
1128 | list_for_each_entry_safe(term, h, head_terms, list) { |
1129 | alias = pmu_find_alias(pmu, term); | |
1130 | if (!alias) | |
1131 | continue; | |
1132 | ret = pmu_alias_terms(alias, &term->list); | |
1133 | if (ret) | |
1134 | return ret; | |
410136f5 | 1135 | |
1d9e446b | 1136 | ret = check_info_data(alias, info); |
410136f5 SE |
1137 | if (ret) |
1138 | return ret; | |
1139 | ||
044330c1 MF |
1140 | if (alias->per_pkg) |
1141 | info->per_pkg = true; | |
37932c18 | 1142 | info->metric_expr = alias->metric_expr; |
96284814 | 1143 | info->metric_name = alias->metric_name; |
044330c1 | 1144 | |
a6146d50 ZY |
1145 | list_del(&term->list); |
1146 | free(term); | |
1147 | } | |
8a398897 SE |
1148 | |
1149 | /* | |
1150 | * if no unit or scale foundin aliases, then | |
1151 | * set defaults as for evsel | |
1152 | * unit cannot left to NULL | |
1153 | */ | |
46441bdc MF |
1154 | if (info->unit == NULL) |
1155 | info->unit = ""; | |
8a398897 | 1156 | |
46441bdc MF |
1157 | if (info->scale == 0.0) |
1158 | info->scale = 1.0; | |
8a398897 | 1159 | |
a6146d50 ZY |
1160 | return 0; |
1161 | } | |
1162 | ||
cd82a32e JO |
1163 | int perf_pmu__new_format(struct list_head *list, char *name, |
1164 | int config, unsigned long *bits) | |
1165 | { | |
5c6ccc37 | 1166 | struct perf_pmu_format *format; |
cd82a32e JO |
1167 | |
1168 | format = zalloc(sizeof(*format)); | |
1169 | if (!format) | |
1170 | return -ENOMEM; | |
1171 | ||
1172 | format->name = strdup(name); | |
1173 | format->value = config; | |
1174 | memcpy(format->bits, bits, sizeof(format->bits)); | |
1175 | ||
1176 | list_add_tail(&format->list, list); | |
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | void perf_pmu__set_format(unsigned long *bits, long from, long to) | |
1181 | { | |
1182 | long b; | |
1183 | ||
1184 | if (!to) | |
1185 | to = from; | |
1186 | ||
15268138 | 1187 | memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS)); |
cd82a32e JO |
1188 | for (b = from; b <= to; b++) |
1189 | set_bit(b, bits); | |
1190 | } | |
dc098b35 | 1191 | |
aaea3617 CS |
1192 | static int sub_non_neg(int a, int b) |
1193 | { | |
1194 | if (b > a) | |
1195 | return 0; | |
1196 | return a - b; | |
1197 | } | |
1198 | ||
dc098b35 AK |
1199 | static char *format_alias(char *buf, int len, struct perf_pmu *pmu, |
1200 | struct perf_pmu_alias *alias) | |
1201 | { | |
aaea3617 CS |
1202 | struct parse_events_term *term; |
1203 | int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name); | |
1204 | ||
1205 | list_for_each_entry(term, &alias->terms, list) { | |
1206 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) | |
1207 | used += snprintf(buf + used, sub_non_neg(len, used), | |
1208 | ",%s=%s", term->config, | |
1209 | term->val.str); | |
1210 | } | |
1211 | ||
1212 | if (sub_non_neg(len, used) > 0) { | |
1213 | buf[used] = '/'; | |
1214 | used++; | |
1215 | } | |
1216 | if (sub_non_neg(len, used) > 0) { | |
1217 | buf[used] = '\0'; | |
1218 | used++; | |
1219 | } else | |
1220 | buf[len - 1] = '\0'; | |
1221 | ||
dc098b35 AK |
1222 | return buf; |
1223 | } | |
1224 | ||
1225 | static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu, | |
1226 | struct perf_pmu_alias *alias) | |
1227 | { | |
1228 | snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name); | |
1229 | return buf; | |
1230 | } | |
1231 | ||
dd5f1036 | 1232 | struct sevent { |
08e60ed1 AK |
1233 | char *name; |
1234 | char *desc; | |
dd5f1036 | 1235 | char *topic; |
f2361024 AK |
1236 | char *str; |
1237 | char *pmu; | |
7f372a63 | 1238 | char *metric_expr; |
96284814 | 1239 | char *metric_name; |
08e60ed1 AK |
1240 | }; |
1241 | ||
dd5f1036 | 1242 | static int cmp_sevent(const void *a, const void *b) |
08e60ed1 | 1243 | { |
dd5f1036 AK |
1244 | const struct sevent *as = a; |
1245 | const struct sevent *bs = b; | |
08e60ed1 AK |
1246 | |
1247 | /* Put extra events last */ | |
1248 | if (!!as->desc != !!bs->desc) | |
1249 | return !!as->desc - !!bs->desc; | |
dd5f1036 AK |
1250 | if (as->topic && bs->topic) { |
1251 | int n = strcmp(as->topic, bs->topic); | |
1252 | ||
1253 | if (n) | |
1254 | return n; | |
1255 | } | |
08e60ed1 AK |
1256 | return strcmp(as->name, bs->name); |
1257 | } | |
1258 | ||
1259 | static void wordwrap(char *s, int start, int max, int corr) | |
dc098b35 | 1260 | { |
08e60ed1 AK |
1261 | int column = start; |
1262 | int n; | |
1263 | ||
1264 | while (*s) { | |
1265 | int wlen = strcspn(s, " \t"); | |
1266 | ||
1267 | if (column + wlen >= max && column > start) { | |
1268 | printf("\n%*s", start, ""); | |
1269 | column = start + corr; | |
1270 | } | |
1271 | n = printf("%s%.*s", column > start ? " " : "", wlen, s); | |
1272 | if (n <= 0) | |
1273 | break; | |
1274 | s += wlen; | |
1275 | column += n; | |
aa4beb10 | 1276 | s = ltrim(s); |
08e60ed1 | 1277 | } |
dc098b35 AK |
1278 | } |
1279 | ||
c8d6828a | 1280 | void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag, |
bf874fcf | 1281 | bool long_desc, bool details_flag) |
dc098b35 AK |
1282 | { |
1283 | struct perf_pmu *pmu; | |
1284 | struct perf_pmu_alias *alias; | |
1285 | char buf[1024]; | |
1286 | int printed = 0; | |
1287 | int len, j; | |
dd5f1036 | 1288 | struct sevent *aliases; |
08e60ed1 | 1289 | int numdesc = 0; |
61eb2eb4 | 1290 | int columns = pager_get_columns(); |
dd5f1036 | 1291 | char *topic = NULL; |
dc098b35 AK |
1292 | |
1293 | pmu = NULL; | |
1294 | len = 0; | |
42634bc7 | 1295 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
dc098b35 AK |
1296 | list_for_each_entry(alias, &pmu->aliases, list) |
1297 | len++; | |
42634bc7 AH |
1298 | if (pmu->selectable) |
1299 | len++; | |
1300 | } | |
dd5f1036 | 1301 | aliases = zalloc(sizeof(struct sevent) * len); |
dc098b35 | 1302 | if (!aliases) |
7e4772dc | 1303 | goto out_enomem; |
dc098b35 AK |
1304 | pmu = NULL; |
1305 | j = 0; | |
42634bc7 | 1306 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
dc098b35 | 1307 | list_for_each_entry(alias, &pmu->aliases, list) { |
08e60ed1 AK |
1308 | char *name = alias->desc ? alias->name : |
1309 | format_alias(buf, sizeof(buf), pmu, alias); | |
dc098b35 AK |
1310 | bool is_cpu = !strcmp(pmu->name, "cpu"); |
1311 | ||
1312 | if (event_glob != NULL && | |
38d14f0c AK |
1313 | !(strglobmatch_nocase(name, event_glob) || |
1314 | (!is_cpu && strglobmatch_nocase(alias->name, | |
67bdc35f AK |
1315 | event_glob)) || |
1316 | (alias->topic && | |
1317 | strglobmatch_nocase(alias->topic, event_glob)))) | |
dc098b35 | 1318 | continue; |
7e4772dc | 1319 | |
08e60ed1 | 1320 | if (is_cpu && !name_only && !alias->desc) |
7e4772dc ACM |
1321 | name = format_alias_or(buf, sizeof(buf), pmu, alias); |
1322 | ||
08e60ed1 AK |
1323 | aliases[j].name = name; |
1324 | if (is_cpu && !name_only && !alias->desc) | |
1325 | aliases[j].name = format_alias_or(buf, | |
1326 | sizeof(buf), | |
1327 | pmu, alias); | |
1328 | aliases[j].name = strdup(aliases[j].name); | |
1329 | if (!aliases[j].name) | |
7e4772dc | 1330 | goto out_enomem; |
08e60ed1 | 1331 | |
c8d6828a SB |
1332 | aliases[j].desc = long_desc ? alias->long_desc : |
1333 | alias->desc; | |
dd5f1036 | 1334 | aliases[j].topic = alias->topic; |
f2361024 AK |
1335 | aliases[j].str = alias->str; |
1336 | aliases[j].pmu = pmu->name; | |
7f372a63 | 1337 | aliases[j].metric_expr = alias->metric_expr; |
96284814 | 1338 | aliases[j].metric_name = alias->metric_name; |
dc098b35 AK |
1339 | j++; |
1340 | } | |
fa52ceab ACM |
1341 | if (pmu->selectable && |
1342 | (event_glob == NULL || strglobmatch(pmu->name, event_glob))) { | |
7e4772dc ACM |
1343 | char *s; |
1344 | if (asprintf(&s, "%s//", pmu->name) < 0) | |
1345 | goto out_enomem; | |
08e60ed1 | 1346 | aliases[j].name = s; |
42634bc7 AH |
1347 | j++; |
1348 | } | |
1349 | } | |
dc098b35 | 1350 | len = j; |
dd5f1036 | 1351 | qsort(aliases, len, sizeof(struct sevent), cmp_sevent); |
dc098b35 | 1352 | for (j = 0; j < len; j++) { |
15b22ed3 AK |
1353 | /* Skip duplicates */ |
1354 | if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name)) | |
1355 | continue; | |
dc098b35 | 1356 | if (name_only) { |
08e60ed1 | 1357 | printf("%s ", aliases[j].name); |
dc098b35 AK |
1358 | continue; |
1359 | } | |
1c5f01fe | 1360 | if (aliases[j].desc && !quiet_flag) { |
08e60ed1 AK |
1361 | if (numdesc++ == 0) |
1362 | printf("\n"); | |
dd5f1036 AK |
1363 | if (aliases[j].topic && (!topic || |
1364 | strcmp(topic, aliases[j].topic))) { | |
1365 | printf("%s%s:\n", topic ? "\n" : "", | |
1366 | aliases[j].topic); | |
1367 | topic = aliases[j].topic; | |
1368 | } | |
08e60ed1 AK |
1369 | printf(" %-50s\n", aliases[j].name); |
1370 | printf("%*s", 8, "["); | |
1371 | wordwrap(aliases[j].desc, 8, columns, 0); | |
1372 | printf("]\n"); | |
bf874fcf | 1373 | if (details_flag) { |
7f372a63 | 1374 | printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str); |
96284814 AK |
1375 | if (aliases[j].metric_name) |
1376 | printf(" MetricName: %s", aliases[j].metric_name); | |
7f372a63 AK |
1377 | if (aliases[j].metric_expr) |
1378 | printf(" MetricExpr: %s", aliases[j].metric_expr); | |
1379 | putchar('\n'); | |
1380 | } | |
08e60ed1 AK |
1381 | } else |
1382 | printf(" %-50s [Kernel PMU event]\n", aliases[j].name); | |
dc098b35 AK |
1383 | printed++; |
1384 | } | |
dfc431cb | 1385 | if (printed && pager_in_use()) |
dc098b35 | 1386 | printf("\n"); |
7e4772dc ACM |
1387 | out_free: |
1388 | for (j = 0; j < len; j++) | |
08e60ed1 | 1389 | zfree(&aliases[j].name); |
7e4772dc ACM |
1390 | zfree(&aliases); |
1391 | return; | |
1392 | ||
1393 | out_enomem: | |
1394 | printf("FATAL: not enough memory to print PMU events\n"); | |
1395 | if (aliases) | |
1396 | goto out_free; | |
dc098b35 | 1397 | } |
4cabc3d1 AK |
1398 | |
1399 | bool pmu_have_event(const char *pname, const char *name) | |
1400 | { | |
1401 | struct perf_pmu *pmu; | |
1402 | struct perf_pmu_alias *alias; | |
1403 | ||
1404 | pmu = NULL; | |
1405 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { | |
1406 | if (strcmp(pname, pmu->name)) | |
1407 | continue; | |
1408 | list_for_each_entry(alias, &pmu->aliases, list) | |
1409 | if (!strcmp(alias->name, name)) | |
1410 | return true; | |
1411 | } | |
1412 | return false; | |
1413 | } | |
7d4bdab5 AH |
1414 | |
1415 | static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name) | |
1416 | { | |
1417 | struct stat st; | |
1418 | char path[PATH_MAX]; | |
1419 | const char *sysfs; | |
1420 | ||
1421 | sysfs = sysfs__mountpoint(); | |
1422 | if (!sysfs) | |
1423 | return NULL; | |
1424 | ||
1425 | snprintf(path, PATH_MAX, | |
1426 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name); | |
1427 | ||
1428 | if (stat(path, &st) < 0) | |
1429 | return NULL; | |
1430 | ||
1431 | return fopen(path, "r"); | |
1432 | } | |
1433 | ||
1434 | int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, | |
1435 | ...) | |
1436 | { | |
1437 | va_list args; | |
1438 | FILE *file; | |
1439 | int ret = EOF; | |
1440 | ||
1441 | va_start(args, fmt); | |
1442 | file = perf_pmu__open_file(pmu, name); | |
1443 | if (file) { | |
1444 | ret = vfscanf(file, fmt, args); | |
1445 | fclose(file); | |
1446 | } | |
1447 | va_end(args); | |
1448 | return ret; | |
1449 | } |