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