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