accel/amdxdna: Return error when setting clock failed for npu1
[drm/drm-misc.git] / tools / perf / tests / pmu.c
blob6a681e3fb552d628b89bfc02d57f6ed70a2c7a7e
1 // SPDX-License-Identifier: GPL-2.0
2 #include "evlist.h"
3 #include "evsel.h"
4 #include "parse-events.h"
5 #include "pmu.h"
6 #include "pmus.h"
7 #include "tests.h"
8 #include "debug.h"
9 #include "fncache.h"
10 #include <api/fs/fs.h>
11 #include <ctype.h>
12 #include <dirent.h>
13 #include <errno.h>
14 #include <fcntl.h>
15 #include <stdio.h>
16 #include <stdlib.h>
17 #include <unistd.h>
18 #include <sys/stat.h>
19 #include <sys/types.h>
21 /* Cleanup test PMU directory. */
22 static int test_pmu_put(const char *dir, struct perf_pmu *pmu)
24 char buf[PATH_MAX + 20];
25 int ret;
27 if (scnprintf(buf, sizeof(buf), "rm -fr %s", dir) < 0) {
28 pr_err("Failure to set up buffer for \"%s\"\n", dir);
29 return -EINVAL;
31 ret = system(buf);
32 if (ret)
33 pr_err("Failure to \"%s\"\n", buf);
35 list_del(&pmu->list);
36 perf_pmu__delete(pmu);
37 return ret;
41 * Prepare test PMU directory data, normally exported by kernel at
42 * /sys/bus/event_source/devices/<pmu>/. Give as input a buffer to hold the file
43 * path, the result is PMU loaded using that directory.
45 static struct perf_pmu *test_pmu_get(char *dir, size_t sz)
47 /* Simulated format definitions. */
48 const struct test_format {
49 const char *name;
50 const char *value;
51 } test_formats[] = {
52 { "krava01", "config:0-1,62-63\n", },
53 { "krava02", "config:10-17\n", },
54 { "krava03", "config:5\n", },
55 { "krava11", "config1:0,2,4,6,8,20-28\n", },
56 { "krava12", "config1:63\n", },
57 { "krava13", "config1:45-47\n", },
58 { "krava21", "config2:0-3,10-13,20-23,30-33,40-43,50-53,60-63\n", },
59 { "krava22", "config2:8,18,48,58\n", },
60 { "krava23", "config2:28-29,38\n", },
62 const char *test_event = "krava01=15,krava02=170,krava03=1,krava11=27,krava12=1,"
63 "krava13=2,krava21=119,krava22=11,krava23=2\n";
65 char name[PATH_MAX];
66 int dirfd, file;
67 struct perf_pmu *pmu = NULL;
68 ssize_t len;
70 /* Create equivalent of sysfs mount point. */
71 scnprintf(dir, sz, "/tmp/perf-pmu-test-XXXXXX");
72 if (!mkdtemp(dir)) {
73 pr_err("mkdtemp failed\n");
74 dir[0] = '\0';
75 return NULL;
77 dirfd = open(dir, O_DIRECTORY);
78 if (dirfd < 0) {
79 pr_err("Failed to open test directory \"%s\"\n", dir);
80 goto err_out;
83 /* Create the test PMU directory and give it a perf_event_attr type number. */
84 if (mkdirat(dirfd, "perf-pmu-test", 0755) < 0) {
85 pr_err("Failed to mkdir PMU directory\n");
86 goto err_out;
88 file = openat(dirfd, "perf-pmu-test/type", O_WRONLY | O_CREAT, 0600);
89 if (!file) {
90 pr_err("Failed to open for writing file \"type\"\n");
91 goto err_out;
93 len = strlen("9999");
94 if (write(file, "9999\n", len) < len) {
95 close(file);
96 pr_err("Failed to write to 'type' file\n");
97 goto err_out;
99 close(file);
101 /* Create format directory and files. */
102 if (mkdirat(dirfd, "perf-pmu-test/format", 0755) < 0) {
103 pr_err("Failed to mkdir PMU format directory\n)");
104 goto err_out;
106 for (size_t i = 0; i < ARRAY_SIZE(test_formats); i++) {
107 const struct test_format *format = &test_formats[i];
109 if (scnprintf(name, PATH_MAX, "perf-pmu-test/format/%s", format->name) < 0) {
110 pr_err("Failure to set up path for \"%s\"\n", format->name);
111 goto err_out;
113 file = openat(dirfd, name, O_WRONLY | O_CREAT, 0600);
114 if (!file) {
115 pr_err("Failed to open for writing file \"%s\"\n", name);
116 goto err_out;
119 if (write(file, format->value, strlen(format->value)) < 0) {
120 pr_err("Failed to write to file \"%s\"\n", name);
121 close(file);
122 goto err_out;
124 close(file);
127 /* Create test event. */
128 if (mkdirat(dirfd, "perf-pmu-test/events", 0755) < 0) {
129 pr_err("Failed to mkdir PMU events directory\n");
130 goto err_out;
132 file = openat(dirfd, "perf-pmu-test/events/test-event", O_WRONLY | O_CREAT, 0600);
133 if (!file) {
134 pr_err("Failed to open for writing file \"type\"\n");
135 goto err_out;
137 len = strlen(test_event);
138 if (write(file, test_event, len) < len) {
139 close(file);
140 pr_err("Failed to write to 'test-event' file\n");
141 goto err_out;
143 close(file);
145 /* Make the PMU reading the files created above. */
146 pmu = perf_pmus__add_test_pmu(dirfd, "perf-pmu-test");
147 if (!pmu)
148 pr_err("Test PMU creation failed\n");
150 err_out:
151 if (!pmu)
152 test_pmu_put(dir, pmu);
153 if (dirfd >= 0)
154 close(dirfd);
155 return pmu;
158 static int test__pmu_format(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
160 char dir[PATH_MAX];
161 struct perf_event_attr attr;
162 struct parse_events_terms terms;
163 int ret = TEST_FAIL;
164 struct perf_pmu *pmu = test_pmu_get(dir, sizeof(dir));
166 if (!pmu)
167 return TEST_FAIL;
169 parse_events_terms__init(&terms);
170 if (parse_events_terms(&terms,
171 "krava01=15,krava02=170,krava03=1,krava11=27,krava12=1,"
172 "krava13=2,krava21=119,krava22=11,krava23=2",
173 NULL)) {
174 pr_err("Term parsing failed\n");
175 goto err_out;
178 memset(&attr, 0, sizeof(attr));
179 ret = perf_pmu__config_terms(pmu, &attr, &terms, /*zero=*/false,
180 /*apply_hardcoded=*/false, /*err=*/NULL);
181 if (ret) {
182 pr_err("perf_pmu__config_terms failed");
183 goto err_out;
186 if (attr.config != 0xc00000000002a823) {
187 pr_err("Unexpected config value %llx\n", attr.config);
188 goto err_out;
190 if (attr.config1 != 0x8000400000000145) {
191 pr_err("Unexpected config1 value %llx\n", attr.config1);
192 goto err_out;
194 if (attr.config2 != 0x0400000020041d07) {
195 pr_err("Unexpected config2 value %llx\n", attr.config2);
196 goto err_out;
199 ret = TEST_OK;
200 err_out:
201 parse_events_terms__exit(&terms);
202 test_pmu_put(dir, pmu);
203 return ret;
206 static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
208 char dir[PATH_MAX];
209 struct parse_events_error err;
210 struct evlist *evlist;
211 struct evsel *evsel;
212 struct perf_event_attr *attr;
213 int ret = TEST_FAIL;
214 struct perf_pmu *pmu = test_pmu_get(dir, sizeof(dir));
215 const char *event = "perf-pmu-test/test-event/";
218 if (!pmu)
219 return TEST_FAIL;
221 evlist = evlist__new();
222 if (evlist == NULL) {
223 pr_err("Failed allocation");
224 goto err_out;
226 parse_events_error__init(&err);
227 ret = parse_events(evlist, event, &err);
228 if (ret) {
229 pr_debug("failed to parse event '%s', err %d\n", event, ret);
230 parse_events_error__print(&err, event);
231 if (parse_events_error__contains(&err, "can't access trace events"))
232 ret = TEST_SKIP;
233 goto err_out;
235 evsel = evlist__first(evlist);
236 attr = &evsel->core.attr;
237 if (attr->config != 0xc00000000002a823) {
238 pr_err("Unexpected config value %llx\n", attr->config);
239 goto err_out;
241 if (attr->config1 != 0x8000400000000145) {
242 pr_err("Unexpected config1 value %llx\n", attr->config1);
243 goto err_out;
245 if (attr->config2 != 0x0400000020041d07) {
246 pr_err("Unexpected config2 value %llx\n", attr->config2);
247 goto err_out;
250 ret = TEST_OK;
251 err_out:
252 parse_events_error__exit(&err);
253 evlist__delete(evlist);
254 test_pmu_put(dir, pmu);
255 return ret;
258 static bool permitted_event_name(const char *name)
260 bool has_lower = false, has_upper = false;
261 __u64 config;
263 for (size_t i = 0; i < strlen(name); i++) {
264 char c = name[i];
266 if (islower(c)) {
267 if (has_upper)
268 goto check_legacy;
269 has_lower = true;
270 continue;
272 if (isupper(c)) {
273 if (has_lower)
274 goto check_legacy;
275 has_upper = true;
276 continue;
278 if (!isdigit(c) && c != '.' && c != '_' && c != '-')
279 goto check_legacy;
281 return true;
282 check_legacy:
284 * If the event name matches a legacy cache name the legacy encoding
285 * will still be used. This isn't quite WAI as sysfs events should take
286 * priority, but this case happens on PowerPC and matches the behavior
287 * in older perf tools where legacy events were the priority. Be
288 * permissive and assume later PMU drivers will use all lower or upper
289 * case names.
291 if (parse_events__decode_legacy_cache(name, /*extended_pmu_type=*/0, &config) == 0) {
292 pr_warning("sysfs event '%s' should be all lower/upper case, it will be matched using legacy encoding.",
293 name);
294 return true;
296 return false;
299 static int test__pmu_event_names(struct test_suite *test __maybe_unused,
300 int subtest __maybe_unused)
302 char path[PATH_MAX];
303 DIR *pmu_dir, *event_dir;
304 struct dirent *pmu_dent, *event_dent;
305 const char *sysfs = sysfs__mountpoint();
306 int ret = TEST_OK;
308 if (!sysfs) {
309 pr_err("Sysfs not mounted\n");
310 return TEST_FAIL;
313 snprintf(path, sizeof(path), "%s/bus/event_source/devices/", sysfs);
314 pmu_dir = opendir(path);
315 if (!pmu_dir) {
316 pr_err("Error opening \"%s\"\n", path);
317 return TEST_FAIL;
319 while ((pmu_dent = readdir(pmu_dir))) {
320 if (!strcmp(pmu_dent->d_name, ".") ||
321 !strcmp(pmu_dent->d_name, ".."))
322 continue;
324 snprintf(path, sizeof(path), "%s/bus/event_source/devices/%s/type",
325 sysfs, pmu_dent->d_name);
327 /* Does it look like a PMU? */
328 if (!file_available(path))
329 continue;
331 /* Process events. */
332 snprintf(path, sizeof(path), "%s/bus/event_source/devices/%s/events",
333 sysfs, pmu_dent->d_name);
335 event_dir = opendir(path);
336 if (!event_dir) {
337 pr_debug("Skipping as no event directory \"%s\"\n", path);
338 continue;
340 while ((event_dent = readdir(event_dir))) {
341 const char *event_name = event_dent->d_name;
343 if (!strcmp(event_name, ".") || !strcmp(event_name, ".."))
344 continue;
346 if (!permitted_event_name(event_name)) {
347 pr_err("Invalid sysfs event name: %s/%s\n",
348 pmu_dent->d_name, event_name);
349 ret = TEST_FAIL;
352 closedir(event_dir);
354 closedir(pmu_dir);
355 return ret;
358 static const char * const uncore_chas[] = {
359 "uncore_cha_0",
360 "uncore_cha_1",
361 "uncore_cha_2",
362 "uncore_cha_3",
363 "uncore_cha_4",
364 "uncore_cha_5",
365 "uncore_cha_6",
366 "uncore_cha_7",
367 "uncore_cha_8",
368 "uncore_cha_9",
369 "uncore_cha_10",
370 "uncore_cha_11",
371 "uncore_cha_12",
372 "uncore_cha_13",
373 "uncore_cha_14",
374 "uncore_cha_15",
375 "uncore_cha_16",
376 "uncore_cha_17",
377 "uncore_cha_18",
378 "uncore_cha_19",
379 "uncore_cha_20",
380 "uncore_cha_21",
381 "uncore_cha_22",
382 "uncore_cha_23",
383 "uncore_cha_24",
384 "uncore_cha_25",
385 "uncore_cha_26",
386 "uncore_cha_27",
387 "uncore_cha_28",
388 "uncore_cha_29",
389 "uncore_cha_30",
390 "uncore_cha_31",
393 static const char * const mrvl_ddrs[] = {
394 "mrvl_ddr_pmu_87e1b0000000",
395 "mrvl_ddr_pmu_87e1b1000000",
396 "mrvl_ddr_pmu_87e1b2000000",
397 "mrvl_ddr_pmu_87e1b3000000",
398 "mrvl_ddr_pmu_87e1b4000000",
399 "mrvl_ddr_pmu_87e1b5000000",
400 "mrvl_ddr_pmu_87e1b6000000",
401 "mrvl_ddr_pmu_87e1b7000000",
402 "mrvl_ddr_pmu_87e1b8000000",
403 "mrvl_ddr_pmu_87e1b9000000",
404 "mrvl_ddr_pmu_87e1ba000000",
405 "mrvl_ddr_pmu_87e1bb000000",
406 "mrvl_ddr_pmu_87e1bc000000",
407 "mrvl_ddr_pmu_87e1bd000000",
408 "mrvl_ddr_pmu_87e1be000000",
409 "mrvl_ddr_pmu_87e1bf000000",
412 static int test__name_len(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
414 TEST_ASSERT_VAL("cpu", pmu_name_len_no_suffix("cpu") == strlen("cpu"));
415 TEST_ASSERT_VAL("i915", pmu_name_len_no_suffix("i915") == strlen("i915"));
416 TEST_ASSERT_VAL("cpum_cf", pmu_name_len_no_suffix("cpum_cf") == strlen("cpum_cf"));
417 for (size_t i = 0; i < ARRAY_SIZE(uncore_chas); i++) {
418 TEST_ASSERT_VAL("Strips uncore_cha suffix",
419 pmu_name_len_no_suffix(uncore_chas[i]) ==
420 strlen("uncore_cha"));
422 for (size_t i = 0; i < ARRAY_SIZE(mrvl_ddrs); i++) {
423 TEST_ASSERT_VAL("Strips mrvl_ddr_pmu suffix",
424 pmu_name_len_no_suffix(mrvl_ddrs[i]) ==
425 strlen("mrvl_ddr_pmu"));
427 return TEST_OK;
430 static int test__name_cmp(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
432 TEST_ASSERT_EQUAL("cpu", pmu_name_cmp("cpu", "cpu"), 0);
433 TEST_ASSERT_EQUAL("i915", pmu_name_cmp("i915", "i915"), 0);
434 TEST_ASSERT_EQUAL("cpum_cf", pmu_name_cmp("cpum_cf", "cpum_cf"), 0);
435 TEST_ASSERT_VAL("i915", pmu_name_cmp("cpu", "i915") < 0);
436 TEST_ASSERT_VAL("i915", pmu_name_cmp("i915", "cpu") > 0);
437 TEST_ASSERT_VAL("cpum_cf", pmu_name_cmp("cpum_cf", "cpum_ce") > 0);
438 TEST_ASSERT_VAL("cpum_cf", pmu_name_cmp("cpum_cf", "cpum_d0") < 0);
439 for (size_t i = 1; i < ARRAY_SIZE(uncore_chas); i++) {
440 TEST_ASSERT_VAL("uncore_cha suffixes ordered lt",
441 pmu_name_cmp(uncore_chas[i-1], uncore_chas[i]) < 0);
442 TEST_ASSERT_VAL("uncore_cha suffixes ordered gt",
443 pmu_name_cmp(uncore_chas[i], uncore_chas[i-1]) > 0);
445 for (size_t i = 1; i < ARRAY_SIZE(mrvl_ddrs); i++) {
446 TEST_ASSERT_VAL("mrvl_ddr_pmu suffixes ordered lt",
447 pmu_name_cmp(mrvl_ddrs[i-1], mrvl_ddrs[i]) < 0);
448 TEST_ASSERT_VAL("mrvl_ddr_pmu suffixes ordered gt",
449 pmu_name_cmp(mrvl_ddrs[i], mrvl_ddrs[i-1]) > 0);
451 return TEST_OK;
455 * Test perf_pmu__match() that's used to search for a PMU given a name passed
456 * on the command line. The name that's passed may also be a filename type glob
457 * match. If the name does not match, perf_pmu__match() attempts to match the
458 * alias of the PMU, if provided.
460 static int test__pmu_match(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
462 struct perf_pmu test_pmu = {
463 .name = "pmuname",
466 TEST_ASSERT_EQUAL("Exact match", perf_pmu__match(&test_pmu, "pmuname"), true);
467 TEST_ASSERT_EQUAL("Longer token", perf_pmu__match(&test_pmu, "longertoken"), false);
468 TEST_ASSERT_EQUAL("Shorter token", perf_pmu__match(&test_pmu, "pmu"), false);
470 test_pmu.name = "pmuname_10";
471 TEST_ASSERT_EQUAL("Diff suffix_", perf_pmu__match(&test_pmu, "pmuname_2"), false);
472 TEST_ASSERT_EQUAL("Sub suffix_", perf_pmu__match(&test_pmu, "pmuname_1"), true);
473 TEST_ASSERT_EQUAL("Same suffix_", perf_pmu__match(&test_pmu, "pmuname_10"), true);
474 TEST_ASSERT_EQUAL("No suffix_", perf_pmu__match(&test_pmu, "pmuname"), true);
475 TEST_ASSERT_EQUAL("Underscore_", perf_pmu__match(&test_pmu, "pmuname_"), true);
476 TEST_ASSERT_EQUAL("Substring_", perf_pmu__match(&test_pmu, "pmuna"), false);
478 test_pmu.name = "pmuname_ab23";
479 TEST_ASSERT_EQUAL("Diff suffix hex_", perf_pmu__match(&test_pmu, "pmuname_2"), false);
480 TEST_ASSERT_EQUAL("Sub suffix hex_", perf_pmu__match(&test_pmu, "pmuname_ab"), true);
481 TEST_ASSERT_EQUAL("Same suffix hex_", perf_pmu__match(&test_pmu, "pmuname_ab23"), true);
482 TEST_ASSERT_EQUAL("No suffix hex_", perf_pmu__match(&test_pmu, "pmuname"), true);
483 TEST_ASSERT_EQUAL("Underscore hex_", perf_pmu__match(&test_pmu, "pmuname_"), true);
484 TEST_ASSERT_EQUAL("Substring hex_", perf_pmu__match(&test_pmu, "pmuna"), false);
486 test_pmu.name = "pmuname10";
487 TEST_ASSERT_EQUAL("Diff suffix", perf_pmu__match(&test_pmu, "pmuname2"), false);
488 TEST_ASSERT_EQUAL("Sub suffix", perf_pmu__match(&test_pmu, "pmuname1"), true);
489 TEST_ASSERT_EQUAL("Same suffix", perf_pmu__match(&test_pmu, "pmuname10"), true);
490 TEST_ASSERT_EQUAL("No suffix", perf_pmu__match(&test_pmu, "pmuname"), true);
491 TEST_ASSERT_EQUAL("Underscore", perf_pmu__match(&test_pmu, "pmuname_"), false);
492 TEST_ASSERT_EQUAL("Substring", perf_pmu__match(&test_pmu, "pmuna"), false);
494 test_pmu.name = "pmunameab23";
495 TEST_ASSERT_EQUAL("Diff suffix hex", perf_pmu__match(&test_pmu, "pmuname2"), false);
496 TEST_ASSERT_EQUAL("Sub suffix hex", perf_pmu__match(&test_pmu, "pmunameab"), true);
497 TEST_ASSERT_EQUAL("Same suffix hex", perf_pmu__match(&test_pmu, "pmunameab23"), true);
498 TEST_ASSERT_EQUAL("No suffix hex", perf_pmu__match(&test_pmu, "pmuname"), true);
499 TEST_ASSERT_EQUAL("Underscore hex", perf_pmu__match(&test_pmu, "pmuname_"), false);
500 TEST_ASSERT_EQUAL("Substring hex", perf_pmu__match(&test_pmu, "pmuna"), false);
503 * 2 hex chars or less are not considered suffixes so it shouldn't be
504 * possible to wildcard by skipping the suffix. Therefore there are more
505 * false results here than above.
507 test_pmu.name = "pmuname_a3";
508 TEST_ASSERT_EQUAL("Diff suffix 2 hex_", perf_pmu__match(&test_pmu, "pmuname_2"), false);
510 * This one should be false, but because pmuname_a3 ends in 3 which is
511 * decimal, it's not possible to determine if it's a short hex suffix or
512 * a normal decimal suffix following text. And we want to match on any
513 * length of decimal suffix. Run the test anyway and expect the wrong
514 * result. And slightly fuzzy matching shouldn't do too much harm.
516 TEST_ASSERT_EQUAL("Sub suffix 2 hex_", perf_pmu__match(&test_pmu, "pmuname_a"), true);
517 TEST_ASSERT_EQUAL("Same suffix 2 hex_", perf_pmu__match(&test_pmu, "pmuname_a3"), true);
518 TEST_ASSERT_EQUAL("No suffix 2 hex_", perf_pmu__match(&test_pmu, "pmuname"), false);
519 TEST_ASSERT_EQUAL("Underscore 2 hex_", perf_pmu__match(&test_pmu, "pmuname_"), false);
520 TEST_ASSERT_EQUAL("Substring 2 hex_", perf_pmu__match(&test_pmu, "pmuna"), false);
522 test_pmu.name = "pmuname_5";
523 TEST_ASSERT_EQUAL("Glob 1", perf_pmu__match(&test_pmu, "pmu*"), true);
524 TEST_ASSERT_EQUAL("Glob 2", perf_pmu__match(&test_pmu, "nomatch*"), false);
525 TEST_ASSERT_EQUAL("Seq 1", perf_pmu__match(&test_pmu, "pmuname_[12345]"), true);
526 TEST_ASSERT_EQUAL("Seq 2", perf_pmu__match(&test_pmu, "pmuname_[67890]"), false);
527 TEST_ASSERT_EQUAL("? 1", perf_pmu__match(&test_pmu, "pmuname_?"), true);
528 TEST_ASSERT_EQUAL("? 2", perf_pmu__match(&test_pmu, "pmuname_1?"), false);
530 return TEST_OK;
533 static struct test_case tests__pmu[] = {
534 TEST_CASE("Parsing with PMU format directory", pmu_format),
535 TEST_CASE("Parsing with PMU event", pmu_events),
536 TEST_CASE("PMU event names", pmu_event_names),
537 TEST_CASE("PMU name combining", name_len),
538 TEST_CASE("PMU name comparison", name_cmp),
539 TEST_CASE("PMU cmdline match", pmu_match),
540 { .name = NULL, }
543 struct test_suite suite__pmu = {
544 .desc = "Sysfs PMU tests",
545 .test_cases = tests__pmu,