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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> |
7a8ef4c4 | 6 | #include <sys/stat.h> |
cd82a32e JO |
7 | #include <unistd.h> |
8 | #include <stdio.h> | |
dc0a6202 | 9 | #include <stdbool.h> |
7d4bdab5 | 10 | #include <stdarg.h> |
cd82a32e | 11 | #include <dirent.h> |
cd0cfad7 | 12 | #include <api/fs/fs.h> |
410136f5 | 13 | #include <locale.h> |
cd82a32e JO |
14 | #include "util.h" |
15 | #include "pmu.h" | |
16 | #include "parse-events.h" | |
7ae92e74 | 17 | #include "cpumap.h" |
933f82ff SB |
18 | #include "header.h" |
19 | #include "pmu-events/pmu-events.h" | |
61eb2eb4 | 20 | #include "cache.h" |
a067558e | 21 | #include "string2.h" |
cd82a32e | 22 | |
ab1bf653 ACM |
23 | struct perf_pmu_format { |
24 | char *name; | |
25 | int value; | |
26 | DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); | |
27 | struct list_head list; | |
28 | }; | |
29 | ||
50a9667c RR |
30 | #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/" |
31 | ||
cd82a32e JO |
32 | int perf_pmu_parse(struct list_head *list, char *name); |
33 | extern FILE *perf_pmu_in; | |
34 | ||
35 | static LIST_HEAD(pmus); | |
36 | ||
37 | /* | |
38 | * Parse & process all the sysfs attributes located under | |
39 | * the directory specified in 'dir' parameter. | |
40 | */ | |
cff7f956 | 41 | int perf_pmu__format_parse(char *dir, struct list_head *head) |
cd82a32e JO |
42 | { |
43 | struct dirent *evt_ent; | |
44 | DIR *format_dir; | |
45 | int ret = 0; | |
46 | ||
47 | format_dir = opendir(dir); | |
48 | if (!format_dir) | |
49 | return -EINVAL; | |
50 | ||
51 | while (!ret && (evt_ent = readdir(format_dir))) { | |
52 | char path[PATH_MAX]; | |
53 | char *name = evt_ent->d_name; | |
54 | FILE *file; | |
55 | ||
56 | if (!strcmp(name, ".") || !strcmp(name, "..")) | |
57 | continue; | |
58 | ||
59 | snprintf(path, PATH_MAX, "%s/%s", dir, name); | |
60 | ||
61 | ret = -EINVAL; | |
62 | file = fopen(path, "r"); | |
63 | if (!file) | |
64 | break; | |
65 | ||
66 | perf_pmu_in = file; | |
67 | ret = perf_pmu_parse(head, name); | |
68 | fclose(file); | |
69 | } | |
70 | ||
71 | closedir(format_dir); | |
72 | return ret; | |
73 | } | |
74 | ||
75 | /* | |
76 | * Reading/parsing the default pmu format definition, which should be | |
77 | * located at: | |
78 | * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes. | |
79 | */ | |
b6b96fb4 | 80 | static int pmu_format(const char *name, struct list_head *format) |
cd82a32e JO |
81 | { |
82 | struct stat st; | |
83 | char path[PATH_MAX]; | |
cf38fada | 84 | const char *sysfs = sysfs__mountpoint(); |
cd82a32e | 85 | |
cd82a32e JO |
86 | if (!sysfs) |
87 | return -1; | |
88 | ||
89 | snprintf(path, PATH_MAX, | |
50a9667c | 90 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name); |
cd82a32e JO |
91 | |
92 | if (stat(path, &st) < 0) | |
9bc8f9fe | 93 | return 0; /* no error if format does not exist */ |
cd82a32e | 94 | |
cff7f956 | 95 | if (perf_pmu__format_parse(path, format)) |
cd82a32e JO |
96 | return -1; |
97 | ||
98 | return 0; | |
99 | } | |
100 | ||
d02fc6bc | 101 | static int convert_scale(const char *scale, char **end, double *sval) |
410136f5 | 102 | { |
ea8f75f9 | 103 | char *lc; |
d02fc6bc | 104 | int ret = 0; |
9ecae065 | 105 | |
410136f5 SE |
106 | /* |
107 | * save current locale | |
108 | */ | |
109 | lc = setlocale(LC_NUMERIC, NULL); | |
110 | ||
f9a5978a JO |
111 | /* |
112 | * The lc string may be allocated in static storage, | |
113 | * so get a dynamic copy to make it survive setlocale | |
114 | * call below. | |
115 | */ | |
116 | lc = strdup(lc); | |
117 | if (!lc) { | |
118 | ret = -ENOMEM; | |
d02fc6bc | 119 | goto out; |
f9a5978a JO |
120 | } |
121 | ||
410136f5 SE |
122 | /* |
123 | * force to C locale to ensure kernel | |
124 | * scale string is converted correctly. | |
125 | * kernel uses default C locale. | |
126 | */ | |
127 | setlocale(LC_NUMERIC, "C"); | |
128 | ||
d02fc6bc | 129 | *sval = strtod(scale, end); |
410136f5 | 130 | |
d02fc6bc | 131 | out: |
410136f5 SE |
132 | /* restore locale */ |
133 | setlocale(LC_NUMERIC, lc); | |
ea8f75f9 | 134 | free(lc); |
d02fc6bc AK |
135 | return ret; |
136 | } | |
137 | ||
138 | static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name) | |
139 | { | |
140 | struct stat st; | |
141 | ssize_t sret; | |
142 | char scale[128]; | |
143 | int fd, ret = -1; | |
144 | char path[PATH_MAX]; | |
145 | ||
9f0fc584 | 146 | scnprintf(path, PATH_MAX, "%s/%s.scale", dir, name); |
d02fc6bc AK |
147 | |
148 | fd = open(path, O_RDONLY); | |
149 | if (fd == -1) | |
150 | return -1; | |
151 | ||
152 | if (fstat(fd, &st) < 0) | |
153 | goto error; | |
154 | ||
155 | sret = read(fd, scale, sizeof(scale)-1); | |
156 | if (sret < 0) | |
157 | goto error; | |
158 | ||
159 | if (scale[sret - 1] == '\n') | |
160 | scale[sret - 1] = '\0'; | |
161 | else | |
162 | scale[sret] = '\0'; | |
f9a5978a | 163 | |
d02fc6bc | 164 | ret = convert_scale(scale, NULL, &alias->scale); |
410136f5 SE |
165 | error: |
166 | close(fd); | |
167 | return ret; | |
168 | } | |
169 | ||
170 | static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name) | |
171 | { | |
172 | char path[PATH_MAX]; | |
173 | ssize_t sret; | |
174 | int fd; | |
175 | ||
9f0fc584 | 176 | scnprintf(path, PATH_MAX, "%s/%s.unit", dir, name); |
410136f5 SE |
177 | |
178 | fd = open(path, O_RDONLY); | |
179 | if (fd == -1) | |
180 | return -1; | |
181 | ||
d85ce830 | 182 | sret = read(fd, alias->unit, UNIT_MAX_LEN); |
410136f5 SE |
183 | if (sret < 0) |
184 | goto error; | |
185 | ||
186 | close(fd); | |
187 | ||
9ecae065 MS |
188 | if (alias->unit[sret - 1] == '\n') |
189 | alias->unit[sret - 1] = '\0'; | |
190 | else | |
191 | alias->unit[sret] = '\0'; | |
410136f5 SE |
192 | |
193 | return 0; | |
194 | error: | |
195 | close(fd); | |
196 | alias->unit[0] = '\0'; | |
197 | return -1; | |
198 | } | |
199 | ||
044330c1 MF |
200 | static int |
201 | perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name) | |
202 | { | |
203 | char path[PATH_MAX]; | |
204 | int fd; | |
205 | ||
9f0fc584 | 206 | scnprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name); |
044330c1 MF |
207 | |
208 | fd = open(path, O_RDONLY); | |
209 | if (fd == -1) | |
210 | return -1; | |
211 | ||
212 | close(fd); | |
213 | ||
214 | alias->per_pkg = true; | |
215 | return 0; | |
216 | } | |
217 | ||
1d9e446b JO |
218 | static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias, |
219 | char *dir, char *name) | |
220 | { | |
221 | char path[PATH_MAX]; | |
222 | int fd; | |
223 | ||
9f0fc584 | 224 | scnprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name); |
1d9e446b JO |
225 | |
226 | fd = open(path, O_RDONLY); | |
227 | if (fd == -1) | |
228 | return -1; | |
229 | ||
230 | alias->snapshot = true; | |
231 | close(fd); | |
232 | return 0; | |
233 | } | |
234 | ||
70c646e0 | 235 | static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name, |
fedb2b51 AK |
236 | char *desc, char *val, |
237 | char *long_desc, char *topic, | |
00636c3b | 238 | char *unit, char *perpkg, |
96284814 AK |
239 | char *metric_expr, |
240 | char *metric_name) | |
a6146d50 | 241 | { |
5c6ccc37 | 242 | struct perf_pmu_alias *alias; |
a6146d50 | 243 | int ret; |
fedb2b51 | 244 | int num; |
a6146d50 | 245 | |
a6146d50 ZY |
246 | alias = malloc(sizeof(*alias)); |
247 | if (!alias) | |
248 | return -ENOMEM; | |
249 | ||
250 | INIT_LIST_HEAD(&alias->terms); | |
410136f5 SE |
251 | alias->scale = 1.0; |
252 | alias->unit[0] = '\0'; | |
044330c1 | 253 | alias->per_pkg = false; |
84530920 | 254 | alias->snapshot = false; |
410136f5 | 255 | |
70c646e0 | 256 | ret = parse_events_terms(&alias->terms, val); |
a6146d50 | 257 | if (ret) { |
70c646e0 | 258 | pr_err("Cannot parse alias %s: %d\n", val, ret); |
a6146d50 ZY |
259 | free(alias); |
260 | return ret; | |
261 | } | |
262 | ||
263 | alias->name = strdup(name); | |
70c646e0 SB |
264 | if (dir) { |
265 | /* | |
266 | * load unit name and scale if available | |
267 | */ | |
268 | perf_pmu__parse_unit(alias, dir, name); | |
269 | perf_pmu__parse_scale(alias, dir, name); | |
270 | perf_pmu__parse_per_pkg(alias, dir, name); | |
271 | perf_pmu__parse_snapshot(alias, dir, name); | |
272 | } | |
410136f5 | 273 | |
00636c3b | 274 | alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL; |
96284814 | 275 | alias->metric_name = metric_name ? strdup(metric_name): NULL; |
08e60ed1 | 276 | alias->desc = desc ? strdup(desc) : NULL; |
c8d6828a SB |
277 | alias->long_desc = long_desc ? strdup(long_desc) : |
278 | desc ? strdup(desc) : NULL; | |
dd5f1036 | 279 | alias->topic = topic ? strdup(topic) : NULL; |
fedb2b51 AK |
280 | if (unit) { |
281 | if (convert_scale(unit, &unit, &alias->scale) < 0) | |
282 | return -1; | |
283 | snprintf(alias->unit, sizeof(alias->unit), "%s", unit); | |
284 | } | |
285 | alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1; | |
f2361024 AK |
286 | alias->str = strdup(val); |
287 | ||
a6146d50 | 288 | list_add_tail(&alias->list, list); |
410136f5 | 289 | |
a6146d50 ZY |
290 | return 0; |
291 | } | |
292 | ||
70c646e0 SB |
293 | static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file) |
294 | { | |
295 | char buf[256]; | |
296 | int ret; | |
297 | ||
298 | ret = fread(buf, 1, sizeof(buf), file); | |
299 | if (ret == 0) | |
300 | return -EINVAL; | |
301 | ||
302 | buf[ret] = 0; | |
303 | ||
fedb2b51 | 304 | return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL, |
96284814 | 305 | NULL, NULL, NULL); |
70c646e0 SB |
306 | } |
307 | ||
46441bdc MF |
308 | static inline bool pmu_alias_info_file(char *name) |
309 | { | |
310 | size_t len; | |
311 | ||
312 | len = strlen(name); | |
313 | if (len > 5 && !strcmp(name + len - 5, ".unit")) | |
314 | return true; | |
315 | if (len > 6 && !strcmp(name + len - 6, ".scale")) | |
316 | return true; | |
044330c1 MF |
317 | if (len > 8 && !strcmp(name + len - 8, ".per-pkg")) |
318 | return true; | |
1d9e446b JO |
319 | if (len > 9 && !strcmp(name + len - 9, ".snapshot")) |
320 | return true; | |
46441bdc MF |
321 | |
322 | return false; | |
323 | } | |
324 | ||
a6146d50 ZY |
325 | /* |
326 | * Process all the sysfs attributes located under the directory | |
327 | * specified in 'dir' parameter. | |
328 | */ | |
329 | static int pmu_aliases_parse(char *dir, struct list_head *head) | |
330 | { | |
331 | struct dirent *evt_ent; | |
332 | DIR *event_dir; | |
a6146d50 ZY |
333 | |
334 | event_dir = opendir(dir); | |
335 | if (!event_dir) | |
336 | return -EINVAL; | |
337 | ||
940db6dc | 338 | while ((evt_ent = readdir(event_dir))) { |
a6146d50 ZY |
339 | char path[PATH_MAX]; |
340 | char *name = evt_ent->d_name; | |
341 | FILE *file; | |
342 | ||
343 | if (!strcmp(name, ".") || !strcmp(name, "..")) | |
344 | continue; | |
345 | ||
410136f5 | 346 | /* |
46441bdc | 347 | * skip info files parsed in perf_pmu__new_alias() |
410136f5 | 348 | */ |
46441bdc | 349 | if (pmu_alias_info_file(name)) |
410136f5 SE |
350 | continue; |
351 | ||
d0c9f9f9 | 352 | scnprintf(path, PATH_MAX, "%s/%s", dir, name); |
a6146d50 | 353 | |
a6146d50 | 354 | file = fopen(path, "r"); |
940db6dc AK |
355 | if (!file) { |
356 | pr_debug("Cannot open %s\n", path); | |
357 | continue; | |
358 | } | |
410136f5 | 359 | |
940db6dc AK |
360 | if (perf_pmu__new_alias(head, dir, name, file) < 0) |
361 | pr_debug("Cannot set up %s\n", name); | |
a6146d50 ZY |
362 | fclose(file); |
363 | } | |
364 | ||
365 | closedir(event_dir); | |
940db6dc | 366 | return 0; |
a6146d50 ZY |
367 | } |
368 | ||
369 | /* | |
370 | * Reading the pmu event aliases definition, which should be located at: | |
371 | * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes. | |
372 | */ | |
b6b96fb4 | 373 | static int pmu_aliases(const char *name, struct list_head *head) |
a6146d50 ZY |
374 | { |
375 | struct stat st; | |
376 | char path[PATH_MAX]; | |
cf38fada | 377 | const char *sysfs = sysfs__mountpoint(); |
a6146d50 | 378 | |
a6146d50 ZY |
379 | if (!sysfs) |
380 | return -1; | |
381 | ||
382 | snprintf(path, PATH_MAX, | |
383 | "%s/bus/event_source/devices/%s/events", sysfs, name); | |
384 | ||
385 | if (stat(path, &st) < 0) | |
3fded963 | 386 | return 0; /* no error if 'events' does not exist */ |
a6146d50 ZY |
387 | |
388 | if (pmu_aliases_parse(path, head)) | |
389 | return -1; | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
5c6ccc37 | 394 | static int pmu_alias_terms(struct perf_pmu_alias *alias, |
a6146d50 ZY |
395 | struct list_head *terms) |
396 | { | |
7c2f8164 | 397 | struct parse_events_term *term, *cloned; |
a6146d50 ZY |
398 | LIST_HEAD(list); |
399 | int ret; | |
400 | ||
401 | list_for_each_entry(term, &alias->terms, list) { | |
7c2f8164 | 402 | ret = parse_events_term__clone(&cloned, term); |
a6146d50 | 403 | if (ret) { |
682dc24c | 404 | parse_events_terms__purge(&list); |
a6146d50 ZY |
405 | return ret; |
406 | } | |
bfb39069 AK |
407 | /* |
408 | * Weak terms don't override command line options, | |
409 | * which we don't want for implicit terms in aliases. | |
410 | */ | |
411 | cloned->weak = true; | |
7c2f8164 | 412 | list_add_tail(&cloned->list, &list); |
a6146d50 ZY |
413 | } |
414 | list_splice(&list, terms); | |
415 | return 0; | |
416 | } | |
417 | ||
cd82a32e JO |
418 | /* |
419 | * Reading/parsing the default pmu type value, which should be | |
420 | * located at: | |
421 | * /sys/bus/event_source/devices/<dev>/type as sysfs attribute. | |
422 | */ | |
b6b96fb4 | 423 | static int pmu_type(const char *name, __u32 *type) |
cd82a32e JO |
424 | { |
425 | struct stat st; | |
426 | char path[PATH_MAX]; | |
cd82a32e JO |
427 | FILE *file; |
428 | int ret = 0; | |
cf38fada | 429 | const char *sysfs = sysfs__mountpoint(); |
cd82a32e | 430 | |
cd82a32e JO |
431 | if (!sysfs) |
432 | return -1; | |
433 | ||
434 | snprintf(path, PATH_MAX, | |
50a9667c | 435 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name); |
cd82a32e JO |
436 | |
437 | if (stat(path, &st) < 0) | |
438 | return -1; | |
439 | ||
440 | file = fopen(path, "r"); | |
441 | if (!file) | |
442 | return -EINVAL; | |
443 | ||
444 | if (1 != fscanf(file, "%u", type)) | |
445 | ret = -1; | |
446 | ||
447 | fclose(file); | |
448 | return ret; | |
449 | } | |
450 | ||
50a9667c RR |
451 | /* Add all pmus in sysfs to pmu list: */ |
452 | static void pmu_read_sysfs(void) | |
453 | { | |
454 | char path[PATH_MAX]; | |
50a9667c RR |
455 | DIR *dir; |
456 | struct dirent *dent; | |
cf38fada | 457 | const char *sysfs = sysfs__mountpoint(); |
50a9667c | 458 | |
50a9667c RR |
459 | if (!sysfs) |
460 | return; | |
461 | ||
462 | snprintf(path, PATH_MAX, | |
463 | "%s" EVENT_SOURCE_DEVICE_PATH, sysfs); | |
464 | ||
465 | dir = opendir(path); | |
466 | if (!dir) | |
467 | return; | |
468 | ||
469 | while ((dent = readdir(dir))) { | |
470 | if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) | |
471 | continue; | |
472 | /* add to static LIST_HEAD(pmus): */ | |
473 | perf_pmu__find(dent->d_name); | |
474 | } | |
475 | ||
476 | closedir(dir); | |
477 | } | |
478 | ||
66ec1191 MR |
479 | static struct cpu_map *__pmu_cpumask(const char *path) |
480 | { | |
481 | FILE *file; | |
482 | struct cpu_map *cpus; | |
483 | ||
484 | file = fopen(path, "r"); | |
485 | if (!file) | |
486 | return NULL; | |
487 | ||
488 | cpus = cpu_map__read(file); | |
489 | fclose(file); | |
490 | return cpus; | |
491 | } | |
492 | ||
493 | /* | |
494 | * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64) | |
495 | * may have a "cpus" file. | |
496 | */ | |
497 | #define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask" | |
498 | #define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus" | |
499 | ||
b6b96fb4 | 500 | static struct cpu_map *pmu_cpumask(const char *name) |
7ae92e74 | 501 | { |
7ae92e74 | 502 | char path[PATH_MAX]; |
7ae92e74 | 503 | struct cpu_map *cpus; |
cf38fada | 504 | const char *sysfs = sysfs__mountpoint(); |
7e3fcffe | 505 | const char *templates[] = { |
66ec1191 MR |
506 | CPUS_TEMPLATE_UNCORE, |
507 | CPUS_TEMPLATE_CPU, | |
508 | NULL | |
7e3fcffe MR |
509 | }; |
510 | const char **template; | |
7ae92e74 | 511 | |
7ae92e74 YZ |
512 | if (!sysfs) |
513 | return NULL; | |
514 | ||
7e3fcffe MR |
515 | for (template = templates; *template; template++) { |
516 | snprintf(path, PATH_MAX, *template, sysfs, name); | |
66ec1191 MR |
517 | cpus = __pmu_cpumask(path); |
518 | if (cpus) | |
519 | return cpus; | |
7e3fcffe | 520 | } |
7ae92e74 | 521 | |
66ec1191 MR |
522 | return NULL; |
523 | } | |
7ae92e74 | 524 | |
66ec1191 MR |
525 | static bool pmu_is_uncore(const char *name) |
526 | { | |
527 | char path[PATH_MAX]; | |
528 | struct cpu_map *cpus; | |
529 | const char *sysfs = sysfs__mountpoint(); | |
7ae92e74 | 530 | |
66ec1191 MR |
531 | snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name); |
532 | cpus = __pmu_cpumask(path); | |
533 | cpu_map__put(cpus); | |
534 | ||
535 | return !!cpus; | |
7ae92e74 YZ |
536 | } |
537 | ||
933f82ff SB |
538 | /* |
539 | * Return the CPU id as a raw string. | |
540 | * | |
541 | * Each architecture should provide a more precise id string that | |
542 | * can be use to match the architecture's "mapfile". | |
543 | */ | |
544 | char * __weak get_cpuid_str(void) | |
545 | { | |
546 | return NULL; | |
547 | } | |
548 | ||
549 | /* | |
550 | * From the pmu_events_map, find the table of PMU events that corresponds | |
551 | * to the current running CPU. Then, add all PMU events from that table | |
552 | * as aliases. | |
553 | */ | |
fedb2b51 | 554 | static void pmu_add_cpu_aliases(struct list_head *head, const char *name) |
933f82ff SB |
555 | { |
556 | int i; | |
557 | struct pmu_events_map *map; | |
558 | struct pmu_event *pe; | |
559 | char *cpuid; | |
fb967063 | 560 | static bool printed; |
933f82ff | 561 | |
fc06e2a5 AK |
562 | cpuid = getenv("PERF_CPUID"); |
563 | if (cpuid) | |
564 | cpuid = strdup(cpuid); | |
565 | if (!cpuid) | |
566 | cpuid = get_cpuid_str(); | |
933f82ff SB |
567 | if (!cpuid) |
568 | return; | |
569 | ||
fb967063 AK |
570 | if (!printed) { |
571 | pr_debug("Using CPUID %s\n", cpuid); | |
572 | printed = true; | |
573 | } | |
fc06e2a5 | 574 | |
933f82ff SB |
575 | i = 0; |
576 | while (1) { | |
577 | map = &pmu_events_map[i++]; | |
578 | if (!map->table) | |
579 | goto out; | |
580 | ||
581 | if (!strcmp(map->cpuid, cpuid)) | |
582 | break; | |
583 | } | |
584 | ||
585 | /* | |
586 | * Found a matching PMU events table. Create aliases | |
587 | */ | |
588 | i = 0; | |
589 | while (1) { | |
fedb2b51 AK |
590 | const char *pname; |
591 | ||
933f82ff SB |
592 | pe = &map->table[i++]; |
593 | if (!pe->name) | |
594 | break; | |
595 | ||
fedb2b51 AK |
596 | pname = pe->pmu ? pe->pmu : "cpu"; |
597 | if (strncmp(pname, name, strlen(pname))) | |
598 | continue; | |
599 | ||
933f82ff SB |
600 | /* need type casts to override 'const' */ |
601 | __perf_pmu__new_alias(head, NULL, (char *)pe->name, | |
c8d6828a | 602 | (char *)pe->desc, (char *)pe->event, |
fedb2b51 | 603 | (char *)pe->long_desc, (char *)pe->topic, |
00636c3b | 604 | (char *)pe->unit, (char *)pe->perpkg, |
96284814 AK |
605 | (char *)pe->metric_expr, |
606 | (char *)pe->metric_name); | |
933f82ff SB |
607 | } |
608 | ||
609 | out: | |
610 | free(cpuid); | |
611 | } | |
612 | ||
c5de47f2 | 613 | struct perf_event_attr * __weak |
dc0a6202 AH |
614 | perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) |
615 | { | |
616 | return NULL; | |
617 | } | |
618 | ||
b6b96fb4 | 619 | static struct perf_pmu *pmu_lookup(const char *name) |
cd82a32e JO |
620 | { |
621 | struct perf_pmu *pmu; | |
622 | LIST_HEAD(format); | |
a6146d50 | 623 | LIST_HEAD(aliases); |
cd82a32e JO |
624 | __u32 type; |
625 | ||
626 | /* | |
627 | * The pmu data we store & need consists of the pmu | |
628 | * type value and format definitions. Load both right | |
629 | * now. | |
630 | */ | |
631 | if (pmu_format(name, &format)) | |
632 | return NULL; | |
633 | ||
15b22ed3 AK |
634 | /* |
635 | * Check the type first to avoid unnecessary work. | |
636 | */ | |
637 | if (pmu_type(name, &type)) | |
3fded963 JO |
638 | return NULL; |
639 | ||
15b22ed3 | 640 | if (pmu_aliases(name, &aliases)) |
cd82a32e JO |
641 | return NULL; |
642 | ||
15b22ed3 | 643 | pmu_add_cpu_aliases(&aliases, name); |
cd82a32e JO |
644 | pmu = zalloc(sizeof(*pmu)); |
645 | if (!pmu) | |
646 | return NULL; | |
647 | ||
7ae92e74 YZ |
648 | pmu->cpus = pmu_cpumask(name); |
649 | ||
66ec1191 MR |
650 | pmu->is_uncore = pmu_is_uncore(name); |
651 | ||
cd82a32e | 652 | INIT_LIST_HEAD(&pmu->format); |
a6146d50 | 653 | INIT_LIST_HEAD(&pmu->aliases); |
cd82a32e | 654 | list_splice(&format, &pmu->format); |
a6146d50 | 655 | list_splice(&aliases, &pmu->aliases); |
cd82a32e JO |
656 | pmu->name = strdup(name); |
657 | pmu->type = type; | |
9bc8f9fe | 658 | list_add_tail(&pmu->list, &pmus); |
dc0a6202 AH |
659 | |
660 | pmu->default_config = perf_pmu__get_default_config(pmu); | |
661 | ||
cd82a32e JO |
662 | return pmu; |
663 | } | |
664 | ||
b6b96fb4 | 665 | static struct perf_pmu *pmu_find(const char *name) |
cd82a32e JO |
666 | { |
667 | struct perf_pmu *pmu; | |
668 | ||
669 | list_for_each_entry(pmu, &pmus, list) | |
670 | if (!strcmp(pmu->name, name)) | |
671 | return pmu; | |
672 | ||
673 | return NULL; | |
674 | } | |
675 | ||
50a9667c RR |
676 | struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu) |
677 | { | |
678 | /* | |
679 | * pmu iterator: If pmu is NULL, we start at the begin, | |
680 | * otherwise return the next pmu. Returns NULL on end. | |
681 | */ | |
682 | if (!pmu) { | |
683 | pmu_read_sysfs(); | |
684 | pmu = list_prepare_entry(pmu, &pmus, list); | |
685 | } | |
686 | list_for_each_entry_continue(pmu, &pmus, list) | |
687 | return pmu; | |
688 | return NULL; | |
689 | } | |
690 | ||
b6b96fb4 | 691 | struct perf_pmu *perf_pmu__find(const char *name) |
cd82a32e JO |
692 | { |
693 | struct perf_pmu *pmu; | |
694 | ||
695 | /* | |
696 | * Once PMU is loaded it stays in the list, | |
697 | * so we keep us from multiple reading/parsing | |
698 | * the pmu format definitions. | |
699 | */ | |
700 | pmu = pmu_find(name); | |
701 | if (pmu) | |
702 | return pmu; | |
703 | ||
704 | return pmu_lookup(name); | |
705 | } | |
706 | ||
5c6ccc37 | 707 | static struct perf_pmu_format * |
09ff6071 | 708 | pmu_find_format(struct list_head *formats, const char *name) |
cd82a32e | 709 | { |
5c6ccc37 | 710 | struct perf_pmu_format *format; |
cd82a32e JO |
711 | |
712 | list_for_each_entry(format, formats, list) | |
713 | if (!strcmp(format->name, name)) | |
714 | return format; | |
715 | ||
716 | return NULL; | |
717 | } | |
718 | ||
09ff6071 AH |
719 | __u64 perf_pmu__format_bits(struct list_head *formats, const char *name) |
720 | { | |
721 | struct perf_pmu_format *format = pmu_find_format(formats, name); | |
722 | __u64 bits = 0; | |
723 | int fbit; | |
724 | ||
725 | if (!format) | |
726 | return 0; | |
727 | ||
728 | for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS) | |
729 | bits |= 1ULL << fbit; | |
730 | ||
731 | return bits; | |
732 | } | |
733 | ||
cd82a32e | 734 | /* |
dc0a6202 | 735 | * Sets value based on the format definition (format parameter) |
cd82a32e | 736 | * and unformated value (value parameter). |
cd82a32e | 737 | */ |
dc0a6202 AH |
738 | static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, |
739 | bool zero) | |
cd82a32e JO |
740 | { |
741 | unsigned long fbit, vbit; | |
cd82a32e JO |
742 | |
743 | for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) { | |
744 | ||
745 | if (!test_bit(fbit, format)) | |
746 | continue; | |
747 | ||
dc0a6202 AH |
748 | if (value & (1llu << vbit++)) |
749 | *v |= (1llu << fbit); | |
750 | else if (zero) | |
751 | *v &= ~(1llu << fbit); | |
cd82a32e | 752 | } |
cd82a32e JO |
753 | } |
754 | ||
0efe6b67 AH |
755 | static __u64 pmu_format_max_value(const unsigned long *format) |
756 | { | |
0c7cd9fe | 757 | int w; |
ac0e2cd5 | 758 | |
0c7cd9fe JO |
759 | w = bitmap_weight(format, PERF_PMU_FORMAT_BITS); |
760 | if (!w) | |
761 | return 0; | |
762 | if (w < 64) | |
763 | return (1ULL << w) - 1; | |
764 | return -1; | |
0efe6b67 AH |
765 | } |
766 | ||
688d4dfc CS |
767 | /* |
768 | * Term is a string term, and might be a param-term. Try to look up it's value | |
769 | * in the remaining terms. | |
770 | * - We have a term like "base-or-format-term=param-term", | |
771 | * - We need to find the value supplied for "param-term" (with param-term named | |
772 | * in a config string) later on in the term list. | |
773 | */ | |
774 | static int pmu_resolve_param_term(struct parse_events_term *term, | |
775 | struct list_head *head_terms, | |
776 | __u64 *value) | |
777 | { | |
778 | struct parse_events_term *t; | |
779 | ||
780 | list_for_each_entry(t, head_terms, list) { | |
781 | if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { | |
782 | if (!strcmp(t->config, term->config)) { | |
783 | t->used = true; | |
784 | *value = t->val.num; | |
785 | return 0; | |
786 | } | |
787 | } | |
788 | } | |
789 | ||
bb963e16 | 790 | if (verbose > 0) |
688d4dfc CS |
791 | printf("Required parameter '%s' not specified\n", term->config); |
792 | ||
793 | return -1; | |
794 | } | |
795 | ||
ffeb883e | 796 | static char *pmu_formats_string(struct list_head *formats) |
e64b020b JO |
797 | { |
798 | struct perf_pmu_format *format; | |
11db4e29 MH |
799 | char *str = NULL; |
800 | struct strbuf buf = STRBUF_INIT; | |
e64b020b JO |
801 | unsigned i = 0; |
802 | ||
ffeb883e | 803 | if (!formats) |
e64b020b JO |
804 | return NULL; |
805 | ||
806 | /* sysfs exported terms */ | |
ffeb883e | 807 | list_for_each_entry(format, formats, list) |
11db4e29 MH |
808 | if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0) |
809 | goto error; | |
e64b020b | 810 | |
ffeb883e | 811 | str = strbuf_detach(&buf, NULL); |
11db4e29 | 812 | error: |
ffeb883e | 813 | strbuf_release(&buf); |
e64b020b | 814 | |
e64b020b | 815 | return str; |
e64b020b JO |
816 | } |
817 | ||
cd82a32e JO |
818 | /* |
819 | * Setup one of config[12] attr members based on the | |
88aca8d9 | 820 | * user input data - term parameter. |
cd82a32e JO |
821 | */ |
822 | static int pmu_config_term(struct list_head *formats, | |
823 | struct perf_event_attr *attr, | |
dc0a6202 | 824 | struct parse_events_term *term, |
688d4dfc | 825 | struct list_head *head_terms, |
e64b020b | 826 | bool zero, struct parse_events_error *err) |
cd82a32e | 827 | { |
5c6ccc37 | 828 | struct perf_pmu_format *format; |
cd82a32e | 829 | __u64 *vp; |
0efe6b67 | 830 | __u64 val, max_val; |
688d4dfc CS |
831 | |
832 | /* | |
833 | * If this is a parameter we've already used for parameterized-eval, | |
834 | * skip it in normal eval. | |
835 | */ | |
836 | if (term->used) | |
837 | return 0; | |
cd82a32e JO |
838 | |
839 | /* | |
cd82a32e JO |
840 | * Hardcoded terms should be already in, so nothing |
841 | * to be done for them. | |
842 | */ | |
843 | if (parse_events__is_hardcoded_term(term)) | |
844 | return 0; | |
845 | ||
cd82a32e | 846 | format = pmu_find_format(formats, term->config); |
688d4dfc | 847 | if (!format) { |
bb963e16 | 848 | if (verbose > 0) |
688d4dfc | 849 | printf("Invalid event/parameter '%s'\n", term->config); |
e64b020b | 850 | if (err) { |
ffeb883e HK |
851 | char *pmu_term = pmu_formats_string(formats); |
852 | ||
e64b020b JO |
853 | err->idx = term->err_term; |
854 | err->str = strdup("unknown term"); | |
ffeb883e HK |
855 | err->help = parse_events_formats_error_string(pmu_term); |
856 | free(pmu_term); | |
e64b020b | 857 | } |
cd82a32e | 858 | return -EINVAL; |
688d4dfc | 859 | } |
cd82a32e JO |
860 | |
861 | switch (format->value) { | |
862 | case PERF_PMU_FORMAT_VALUE_CONFIG: | |
863 | vp = &attr->config; | |
864 | break; | |
865 | case PERF_PMU_FORMAT_VALUE_CONFIG1: | |
866 | vp = &attr->config1; | |
867 | break; | |
868 | case PERF_PMU_FORMAT_VALUE_CONFIG2: | |
869 | vp = &attr->config2; | |
870 | break; | |
871 | default: | |
872 | return -EINVAL; | |
873 | } | |
874 | ||
16fa7e82 | 875 | /* |
688d4dfc CS |
876 | * Either directly use a numeric term, or try to translate string terms |
877 | * using event parameters. | |
16fa7e82 | 878 | */ |
99e7138e JO |
879 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { |
880 | if (term->no_value && | |
881 | bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) { | |
882 | if (err) { | |
883 | err->idx = term->err_val; | |
884 | err->str = strdup("no value assigned for term"); | |
885 | } | |
886 | return -EINVAL; | |
887 | } | |
888 | ||
688d4dfc | 889 | val = term->val.num; |
99e7138e | 890 | } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { |
688d4dfc | 891 | if (strcmp(term->val.str, "?")) { |
bb963e16 | 892 | if (verbose > 0) { |
688d4dfc CS |
893 | pr_info("Invalid sysfs entry %s=%s\n", |
894 | term->config, term->val.str); | |
e64b020b JO |
895 | } |
896 | if (err) { | |
897 | err->idx = term->err_val; | |
898 | err->str = strdup("expected numeric value"); | |
899 | } | |
688d4dfc CS |
900 | return -EINVAL; |
901 | } | |
902 | ||
903 | if (pmu_resolve_param_term(term, head_terms, &val)) | |
904 | return -EINVAL; | |
905 | } else | |
906 | return -EINVAL; | |
907 | ||
0efe6b67 AH |
908 | max_val = pmu_format_max_value(format->bits); |
909 | if (val > max_val) { | |
910 | if (err) { | |
911 | err->idx = term->err_val; | |
912 | if (asprintf(&err->str, | |
913 | "value too big for format, maximum is %llu", | |
914 | (unsigned long long)max_val) < 0) | |
915 | err->str = strdup("value too big for format"); | |
916 | return -EINVAL; | |
917 | } | |
918 | /* | |
919 | * Assume we don't care if !err, in which case the value will be | |
920 | * silently truncated. | |
921 | */ | |
922 | } | |
923 | ||
688d4dfc | 924 | pmu_format_value(format->bits, val, vp, zero); |
cd82a32e JO |
925 | return 0; |
926 | } | |
927 | ||
cff7f956 JO |
928 | int perf_pmu__config_terms(struct list_head *formats, |
929 | struct perf_event_attr *attr, | |
dc0a6202 | 930 | struct list_head *head_terms, |
e64b020b | 931 | bool zero, struct parse_events_error *err) |
cd82a32e | 932 | { |
6cee6cd3 | 933 | struct parse_events_term *term; |
cd82a32e | 934 | |
688d4dfc | 935 | list_for_each_entry(term, head_terms, list) { |
e64b020b JO |
936 | if (pmu_config_term(formats, attr, term, head_terms, |
937 | zero, err)) | |
cd82a32e | 938 | return -EINVAL; |
688d4dfc | 939 | } |
cd82a32e JO |
940 | |
941 | return 0; | |
942 | } | |
943 | ||
944 | /* | |
945 | * Configures event's 'attr' parameter based on the: | |
946 | * 1) users input - specified in terms parameter | |
947 | * 2) pmu format definitions - specified by pmu parameter | |
948 | */ | |
949 | int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, | |
e64b020b JO |
950 | struct list_head *head_terms, |
951 | struct parse_events_error *err) | |
cd82a32e | 952 | { |
dc0a6202 AH |
953 | bool zero = !!pmu->default_config; |
954 | ||
cd82a32e | 955 | attr->type = pmu->type; |
e64b020b JO |
956 | return perf_pmu__config_terms(&pmu->format, attr, head_terms, |
957 | zero, err); | |
cd82a32e JO |
958 | } |
959 | ||
5c6ccc37 ACM |
960 | static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, |
961 | struct parse_events_term *term) | |
a6146d50 | 962 | { |
5c6ccc37 | 963 | struct perf_pmu_alias *alias; |
a6146d50 ZY |
964 | char *name; |
965 | ||
966 | if (parse_events__is_hardcoded_term(term)) | |
967 | return NULL; | |
968 | ||
969 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { | |
970 | if (term->val.num != 1) | |
971 | return NULL; | |
972 | if (pmu_find_format(&pmu->format, term->config)) | |
973 | return NULL; | |
974 | name = term->config; | |
975 | } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { | |
976 | if (strcasecmp(term->config, "event")) | |
977 | return NULL; | |
978 | name = term->val.str; | |
979 | } else { | |
980 | return NULL; | |
981 | } | |
982 | ||
983 | list_for_each_entry(alias, &pmu->aliases, list) { | |
984 | if (!strcasecmp(alias->name, name)) | |
985 | return alias; | |
986 | } | |
987 | return NULL; | |
988 | } | |
989 | ||
410136f5 | 990 | |
1d9e446b JO |
991 | static int check_info_data(struct perf_pmu_alias *alias, |
992 | struct perf_pmu_info *info) | |
410136f5 SE |
993 | { |
994 | /* | |
995 | * Only one term in event definition can | |
1d9e446b JO |
996 | * define unit, scale and snapshot, fail |
997 | * if there's more than one. | |
410136f5 | 998 | */ |
b30a7d1f | 999 | if ((info->unit && alias->unit[0]) || |
1d9e446b JO |
1000 | (info->scale && alias->scale) || |
1001 | (info->snapshot && alias->snapshot)) | |
410136f5 SE |
1002 | return -EINVAL; |
1003 | ||
b30a7d1f | 1004 | if (alias->unit[0]) |
1d9e446b | 1005 | info->unit = alias->unit; |
410136f5 SE |
1006 | |
1007 | if (alias->scale) | |
1d9e446b JO |
1008 | info->scale = alias->scale; |
1009 | ||
1010 | if (alias->snapshot) | |
1011 | info->snapshot = alias->snapshot; | |
410136f5 SE |
1012 | |
1013 | return 0; | |
1014 | } | |
1015 | ||
a6146d50 ZY |
1016 | /* |
1017 | * Find alias in the terms list and replace it with the terms | |
1018 | * defined for the alias | |
1019 | */ | |
410136f5 | 1020 | int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, |
46441bdc | 1021 | struct perf_pmu_info *info) |
a6146d50 | 1022 | { |
6cee6cd3 | 1023 | struct parse_events_term *term, *h; |
5c6ccc37 | 1024 | struct perf_pmu_alias *alias; |
a6146d50 ZY |
1025 | int ret; |
1026 | ||
044330c1 MF |
1027 | info->per_pkg = false; |
1028 | ||
8a398897 SE |
1029 | /* |
1030 | * Mark unit and scale as not set | |
1031 | * (different from default values, see below) | |
1032 | */ | |
1d9e446b JO |
1033 | info->unit = NULL; |
1034 | info->scale = 0.0; | |
1035 | info->snapshot = false; | |
37932c18 | 1036 | info->metric_expr = NULL; |
96284814 | 1037 | info->metric_name = NULL; |
410136f5 | 1038 | |
a6146d50 ZY |
1039 | list_for_each_entry_safe(term, h, head_terms, list) { |
1040 | alias = pmu_find_alias(pmu, term); | |
1041 | if (!alias) | |
1042 | continue; | |
1043 | ret = pmu_alias_terms(alias, &term->list); | |
1044 | if (ret) | |
1045 | return ret; | |
410136f5 | 1046 | |
1d9e446b | 1047 | ret = check_info_data(alias, info); |
410136f5 SE |
1048 | if (ret) |
1049 | return ret; | |
1050 | ||
044330c1 MF |
1051 | if (alias->per_pkg) |
1052 | info->per_pkg = true; | |
37932c18 | 1053 | info->metric_expr = alias->metric_expr; |
96284814 | 1054 | info->metric_name = alias->metric_name; |
044330c1 | 1055 | |
a6146d50 ZY |
1056 | list_del(&term->list); |
1057 | free(term); | |
1058 | } | |
8a398897 SE |
1059 | |
1060 | /* | |
1061 | * if no unit or scale foundin aliases, then | |
1062 | * set defaults as for evsel | |
1063 | * unit cannot left to NULL | |
1064 | */ | |
46441bdc MF |
1065 | if (info->unit == NULL) |
1066 | info->unit = ""; | |
8a398897 | 1067 | |
46441bdc MF |
1068 | if (info->scale == 0.0) |
1069 | info->scale = 1.0; | |
8a398897 | 1070 | |
a6146d50 ZY |
1071 | return 0; |
1072 | } | |
1073 | ||
cd82a32e JO |
1074 | int perf_pmu__new_format(struct list_head *list, char *name, |
1075 | int config, unsigned long *bits) | |
1076 | { | |
5c6ccc37 | 1077 | struct perf_pmu_format *format; |
cd82a32e JO |
1078 | |
1079 | format = zalloc(sizeof(*format)); | |
1080 | if (!format) | |
1081 | return -ENOMEM; | |
1082 | ||
1083 | format->name = strdup(name); | |
1084 | format->value = config; | |
1085 | memcpy(format->bits, bits, sizeof(format->bits)); | |
1086 | ||
1087 | list_add_tail(&format->list, list); | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | void perf_pmu__set_format(unsigned long *bits, long from, long to) | |
1092 | { | |
1093 | long b; | |
1094 | ||
1095 | if (!to) | |
1096 | to = from; | |
1097 | ||
15268138 | 1098 | memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS)); |
cd82a32e JO |
1099 | for (b = from; b <= to; b++) |
1100 | set_bit(b, bits); | |
1101 | } | |
dc098b35 | 1102 | |
1cf043ba NK |
1103 | void perf_pmu__del_formats(struct list_head *formats) |
1104 | { | |
1105 | struct perf_pmu_format *fmt, *tmp; | |
1106 | ||
1107 | list_for_each_entry_safe(fmt, tmp, formats, list) { | |
1108 | list_del(&fmt->list); | |
1109 | free(fmt->name); | |
1110 | free(fmt); | |
1111 | } | |
1112 | } | |
1113 | ||
aaea3617 CS |
1114 | static int sub_non_neg(int a, int b) |
1115 | { | |
1116 | if (b > a) | |
1117 | return 0; | |
1118 | return a - b; | |
1119 | } | |
1120 | ||
dc098b35 AK |
1121 | static char *format_alias(char *buf, int len, struct perf_pmu *pmu, |
1122 | struct perf_pmu_alias *alias) | |
1123 | { | |
aaea3617 CS |
1124 | struct parse_events_term *term; |
1125 | int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name); | |
1126 | ||
1127 | list_for_each_entry(term, &alias->terms, list) { | |
1128 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) | |
1129 | used += snprintf(buf + used, sub_non_neg(len, used), | |
1130 | ",%s=%s", term->config, | |
1131 | term->val.str); | |
1132 | } | |
1133 | ||
1134 | if (sub_non_neg(len, used) > 0) { | |
1135 | buf[used] = '/'; | |
1136 | used++; | |
1137 | } | |
1138 | if (sub_non_neg(len, used) > 0) { | |
1139 | buf[used] = '\0'; | |
1140 | used++; | |
1141 | } else | |
1142 | buf[len - 1] = '\0'; | |
1143 | ||
dc098b35 AK |
1144 | return buf; |
1145 | } | |
1146 | ||
1147 | static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu, | |
1148 | struct perf_pmu_alias *alias) | |
1149 | { | |
1150 | snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name); | |
1151 | return buf; | |
1152 | } | |
1153 | ||
dd5f1036 | 1154 | struct sevent { |
08e60ed1 AK |
1155 | char *name; |
1156 | char *desc; | |
dd5f1036 | 1157 | char *topic; |
f2361024 AK |
1158 | char *str; |
1159 | char *pmu; | |
7f372a63 | 1160 | char *metric_expr; |
96284814 | 1161 | char *metric_name; |
08e60ed1 AK |
1162 | }; |
1163 | ||
dd5f1036 | 1164 | static int cmp_sevent(const void *a, const void *b) |
08e60ed1 | 1165 | { |
dd5f1036 AK |
1166 | const struct sevent *as = a; |
1167 | const struct sevent *bs = b; | |
08e60ed1 AK |
1168 | |
1169 | /* Put extra events last */ | |
1170 | if (!!as->desc != !!bs->desc) | |
1171 | return !!as->desc - !!bs->desc; | |
dd5f1036 AK |
1172 | if (as->topic && bs->topic) { |
1173 | int n = strcmp(as->topic, bs->topic); | |
1174 | ||
1175 | if (n) | |
1176 | return n; | |
1177 | } | |
08e60ed1 AK |
1178 | return strcmp(as->name, bs->name); |
1179 | } | |
1180 | ||
1181 | static void wordwrap(char *s, int start, int max, int corr) | |
dc098b35 | 1182 | { |
08e60ed1 AK |
1183 | int column = start; |
1184 | int n; | |
1185 | ||
1186 | while (*s) { | |
1187 | int wlen = strcspn(s, " \t"); | |
1188 | ||
1189 | if (column + wlen >= max && column > start) { | |
1190 | printf("\n%*s", start, ""); | |
1191 | column = start + corr; | |
1192 | } | |
1193 | n = printf("%s%.*s", column > start ? " " : "", wlen, s); | |
1194 | if (n <= 0) | |
1195 | break; | |
1196 | s += wlen; | |
1197 | column += n; | |
aa4beb10 | 1198 | s = ltrim(s); |
08e60ed1 | 1199 | } |
dc098b35 AK |
1200 | } |
1201 | ||
c8d6828a | 1202 | void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag, |
bf874fcf | 1203 | bool long_desc, bool details_flag) |
dc098b35 AK |
1204 | { |
1205 | struct perf_pmu *pmu; | |
1206 | struct perf_pmu_alias *alias; | |
1207 | char buf[1024]; | |
1208 | int printed = 0; | |
1209 | int len, j; | |
dd5f1036 | 1210 | struct sevent *aliases; |
08e60ed1 | 1211 | int numdesc = 0; |
61eb2eb4 | 1212 | int columns = pager_get_columns(); |
dd5f1036 | 1213 | char *topic = NULL; |
dc098b35 AK |
1214 | |
1215 | pmu = NULL; | |
1216 | len = 0; | |
42634bc7 | 1217 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
dc098b35 AK |
1218 | list_for_each_entry(alias, &pmu->aliases, list) |
1219 | len++; | |
42634bc7 AH |
1220 | if (pmu->selectable) |
1221 | len++; | |
1222 | } | |
dd5f1036 | 1223 | aliases = zalloc(sizeof(struct sevent) * len); |
dc098b35 | 1224 | if (!aliases) |
7e4772dc | 1225 | goto out_enomem; |
dc098b35 AK |
1226 | pmu = NULL; |
1227 | j = 0; | |
42634bc7 | 1228 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
dc098b35 | 1229 | list_for_each_entry(alias, &pmu->aliases, list) { |
08e60ed1 AK |
1230 | char *name = alias->desc ? alias->name : |
1231 | format_alias(buf, sizeof(buf), pmu, alias); | |
dc098b35 AK |
1232 | bool is_cpu = !strcmp(pmu->name, "cpu"); |
1233 | ||
1234 | if (event_glob != NULL && | |
38d14f0c AK |
1235 | !(strglobmatch_nocase(name, event_glob) || |
1236 | (!is_cpu && strglobmatch_nocase(alias->name, | |
67bdc35f AK |
1237 | event_glob)) || |
1238 | (alias->topic && | |
1239 | strglobmatch_nocase(alias->topic, event_glob)))) | |
dc098b35 | 1240 | continue; |
7e4772dc | 1241 | |
08e60ed1 | 1242 | if (is_cpu && !name_only && !alias->desc) |
7e4772dc ACM |
1243 | name = format_alias_or(buf, sizeof(buf), pmu, alias); |
1244 | ||
08e60ed1 AK |
1245 | aliases[j].name = name; |
1246 | if (is_cpu && !name_only && !alias->desc) | |
1247 | aliases[j].name = format_alias_or(buf, | |
1248 | sizeof(buf), | |
1249 | pmu, alias); | |
1250 | aliases[j].name = strdup(aliases[j].name); | |
1251 | if (!aliases[j].name) | |
7e4772dc | 1252 | goto out_enomem; |
08e60ed1 | 1253 | |
c8d6828a SB |
1254 | aliases[j].desc = long_desc ? alias->long_desc : |
1255 | alias->desc; | |
dd5f1036 | 1256 | aliases[j].topic = alias->topic; |
f2361024 AK |
1257 | aliases[j].str = alias->str; |
1258 | aliases[j].pmu = pmu->name; | |
7f372a63 | 1259 | aliases[j].metric_expr = alias->metric_expr; |
96284814 | 1260 | aliases[j].metric_name = alias->metric_name; |
dc098b35 AK |
1261 | j++; |
1262 | } | |
fa52ceab ACM |
1263 | if (pmu->selectable && |
1264 | (event_glob == NULL || strglobmatch(pmu->name, event_glob))) { | |
7e4772dc ACM |
1265 | char *s; |
1266 | if (asprintf(&s, "%s//", pmu->name) < 0) | |
1267 | goto out_enomem; | |
08e60ed1 | 1268 | aliases[j].name = s; |
42634bc7 AH |
1269 | j++; |
1270 | } | |
1271 | } | |
dc098b35 | 1272 | len = j; |
dd5f1036 | 1273 | qsort(aliases, len, sizeof(struct sevent), cmp_sevent); |
dc098b35 | 1274 | for (j = 0; j < len; j++) { |
15b22ed3 AK |
1275 | /* Skip duplicates */ |
1276 | if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name)) | |
1277 | continue; | |
dc098b35 | 1278 | if (name_only) { |
08e60ed1 | 1279 | printf("%s ", aliases[j].name); |
dc098b35 AK |
1280 | continue; |
1281 | } | |
1c5f01fe | 1282 | if (aliases[j].desc && !quiet_flag) { |
08e60ed1 AK |
1283 | if (numdesc++ == 0) |
1284 | printf("\n"); | |
dd5f1036 AK |
1285 | if (aliases[j].topic && (!topic || |
1286 | strcmp(topic, aliases[j].topic))) { | |
1287 | printf("%s%s:\n", topic ? "\n" : "", | |
1288 | aliases[j].topic); | |
1289 | topic = aliases[j].topic; | |
1290 | } | |
08e60ed1 AK |
1291 | printf(" %-50s\n", aliases[j].name); |
1292 | printf("%*s", 8, "["); | |
1293 | wordwrap(aliases[j].desc, 8, columns, 0); | |
1294 | printf("]\n"); | |
bf874fcf | 1295 | if (details_flag) { |
7f372a63 | 1296 | printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str); |
96284814 AK |
1297 | if (aliases[j].metric_name) |
1298 | printf(" MetricName: %s", aliases[j].metric_name); | |
7f372a63 AK |
1299 | if (aliases[j].metric_expr) |
1300 | printf(" MetricExpr: %s", aliases[j].metric_expr); | |
1301 | putchar('\n'); | |
1302 | } | |
08e60ed1 AK |
1303 | } else |
1304 | printf(" %-50s [Kernel PMU event]\n", aliases[j].name); | |
dc098b35 AK |
1305 | printed++; |
1306 | } | |
dfc431cb | 1307 | if (printed && pager_in_use()) |
dc098b35 | 1308 | printf("\n"); |
7e4772dc ACM |
1309 | out_free: |
1310 | for (j = 0; j < len; j++) | |
08e60ed1 | 1311 | zfree(&aliases[j].name); |
7e4772dc ACM |
1312 | zfree(&aliases); |
1313 | return; | |
1314 | ||
1315 | out_enomem: | |
1316 | printf("FATAL: not enough memory to print PMU events\n"); | |
1317 | if (aliases) | |
1318 | goto out_free; | |
dc098b35 | 1319 | } |
4cabc3d1 AK |
1320 | |
1321 | bool pmu_have_event(const char *pname, const char *name) | |
1322 | { | |
1323 | struct perf_pmu *pmu; | |
1324 | struct perf_pmu_alias *alias; | |
1325 | ||
1326 | pmu = NULL; | |
1327 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { | |
1328 | if (strcmp(pname, pmu->name)) | |
1329 | continue; | |
1330 | list_for_each_entry(alias, &pmu->aliases, list) | |
1331 | if (!strcmp(alias->name, name)) | |
1332 | return true; | |
1333 | } | |
1334 | return false; | |
1335 | } | |
7d4bdab5 AH |
1336 | |
1337 | static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name) | |
1338 | { | |
1339 | struct stat st; | |
1340 | char path[PATH_MAX]; | |
1341 | const char *sysfs; | |
1342 | ||
1343 | sysfs = sysfs__mountpoint(); | |
1344 | if (!sysfs) | |
1345 | return NULL; | |
1346 | ||
1347 | snprintf(path, PATH_MAX, | |
1348 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name); | |
1349 | ||
1350 | if (stat(path, &st) < 0) | |
1351 | return NULL; | |
1352 | ||
1353 | return fopen(path, "r"); | |
1354 | } | |
1355 | ||
1356 | int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, | |
1357 | ...) | |
1358 | { | |
1359 | va_list args; | |
1360 | FILE *file; | |
1361 | int ret = EOF; | |
1362 | ||
1363 | va_start(args, fmt); | |
1364 | file = perf_pmu__open_file(pmu, name); | |
1365 | if (file) { | |
1366 | ret = vfscanf(file, fmt, args); | |
1367 | fclose(file); | |
1368 | } | |
1369 | va_end(args); | |
1370 | return ret; | |
1371 | } |