1 // SPDX-License-Identifier: GPL-2.0
2 #include "math.h"
3 #include "parse-events.h"
4 #include "pmu.h"
5 #include "pmus.h"
6 #include "tests.h"
7 #include <errno.h>
8 #include <stdio.h>
9 #include <linux/kernel.h>
10 #include <linux/zalloc.h>
11 #include "debug.h"
12 #include "../pmu-events/pmu-events.h"
13 #include <perf/evlist.h>
14 #include "util/evlist.h"
15 #include "util/expr.h"
16 #include "util/hashmap.h"
17 #include "util/parse-events.h"
18 #include "metricgroup.h"
19 #include "stat.h"
20
21 struct perf_pmu_test_event {
22 /* used for matching against events from generated pmu-events.c */
23 struct pmu_event event;
24
25 /* used for matching against event aliases */
26 /* extra events for aliases */
27 const char *alias_str;
28
29 /*
30 * Note: For when PublicDescription does not exist in the JSON, we
31 * will have no long_desc in pmu_event.long_desc, but long_desc may
32 * be set in the alias.
33 */
34 const char *alias_long_desc;
35
36 /* PMU which we should match against */
37 const char *matching_pmu;
38 };
39
40 struct perf_pmu_test_pmu {
41 struct perf_pmu pmu;
42 struct perf_pmu_test_event const *aliases[10];
43 };
44
45 static const struct perf_pmu_test_event bp_l1_btb_correct = {
46 .event = {
47 .pmu = "default_core",
48 .name = "bp_l1_btb_correct",
49 .event = "event=0x8a",
50 .desc = "L1 BTB Correction",
51 .topic = "branch",
52 },
53 .alias_str = "event=0x8a",
54 .alias_long_desc = "L1 BTB Correction",
55 };
56
57 static const struct perf_pmu_test_event bp_l2_btb_correct = {
58 .event = {
59 .pmu = "default_core",
60 .name = "bp_l2_btb_correct",
61 .event = "event=0x8b",
62 .desc = "L2 BTB Correction",
63 .topic = "branch",
64 },
65 .alias_str = "event=0x8b",
66 .alias_long_desc = "L2 BTB Correction",
67 };
68
69 static const struct perf_pmu_test_event segment_reg_loads_any = {
70 .event = {
71 .pmu = "default_core",
72 .name = "segment_reg_loads.any",
73 .event = "event=0x6,period=200000,umask=0x80",
74 .desc = "Number of segment register loads",
75 .topic = "other",
76 },
77 .alias_str = "event=0x6,period=0x30d40,umask=0x80",
78 .alias_long_desc = "Number of segment register loads",
79 };
80
81 static const struct perf_pmu_test_event dispatch_blocked_any = {
82 .event = {
83 .pmu = "default_core",
84 .name = "dispatch_blocked.any",
85 .event = "event=0x9,period=200000,umask=0x20",
86 .desc = "Memory cluster signals to block micro-op dispatch for any reason",
87 .topic = "other",
88 },
89 .alias_str = "event=0x9,period=0x30d40,umask=0x20",
90 .alias_long_desc = "Memory cluster signals to block micro-op dispatch for any reason",
91 };
92
93 static const struct perf_pmu_test_event eist_trans = {
94 .event = {
95 .pmu = "default_core",
96 .name = "eist_trans",
97 .event = "event=0x3a,period=200000,umask=0x0",
98 .desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
99 .topic = "other",
100 },
101 .alias_str = "event=0x3a,period=0x30d40,umask=0",
102 .alias_long_desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
103 };
104
105 static const struct perf_pmu_test_event l3_cache_rd = {
106 .event = {
107 .pmu = "default_core",
108 .name = "l3_cache_rd",
109 .event = "event=0x40",
110 .desc = "L3 cache access, read",
111 .long_desc = "Attributable Level 3 cache access, read",
112 .topic = "cache",
113 },
114 .alias_str = "event=0x40",
115 .alias_long_desc = "Attributable Level 3 cache access, read",
116 };
117
118 static const struct perf_pmu_test_event *core_events[] = {
119 &bp_l1_btb_correct,
120 &bp_l2_btb_correct,
121 &segment_reg_loads_any,
122 &dispatch_blocked_any,
123 &eist_trans,
124 &l3_cache_rd,
125 NULL
126 };
127
128 static const struct perf_pmu_test_event uncore_hisi_ddrc_flux_wcmd = {
129 .event = {
130 .name = "uncore_hisi_ddrc.flux_wcmd",
131 .event = "event=0x2",
132 .desc = "DDRC write commands",
133 .topic = "uncore",
134 .long_desc = "DDRC write commands",
135 .pmu = "hisi_sccl,ddrc",
136 },
137 .alias_str = "event=0x2",
138 .alias_long_desc = "DDRC write commands",
139 .matching_pmu = "hisi_sccl1_ddrc2",
140 };
141
142 static const struct perf_pmu_test_event unc_cbo_xsnp_response_miss_eviction = {
143 .event = {
144 .name = "unc_cbo_xsnp_response.miss_eviction",
145 .event = "event=0x22,umask=0x81",
146 .desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
147 .topic = "uncore",
148 .long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
149 .pmu = "uncore_cbox",
150 },
151 .alias_str = "event=0x22,umask=0x81",
152 .alias_long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
153 .matching_pmu = "uncore_cbox_0",
154 };
155
156 static const struct perf_pmu_test_event uncore_hyphen = {
157 .event = {
158 .name = "event-hyphen",
159 .event = "event=0xe0,umask=0x00",
160 .desc = "UNC_CBO_HYPHEN",
161 .topic = "uncore",
162 .long_desc = "UNC_CBO_HYPHEN",
163 .pmu = "uncore_cbox",
164 },
165 .alias_str = "event=0xe0,umask=0",
166 .alias_long_desc = "UNC_CBO_HYPHEN",
167 .matching_pmu = "uncore_cbox_0",
168 };
169
170 static const struct perf_pmu_test_event uncore_two_hyph = {
171 .event = {
172 .name = "event-two-hyph",
173 .event = "event=0xc0,umask=0x00",
174 .desc = "UNC_CBO_TWO_HYPH",
175 .topic = "uncore",
176 .long_desc = "UNC_CBO_TWO_HYPH",
177 .pmu = "uncore_cbox",
178 },
179 .alias_str = "event=0xc0,umask=0",
180 .alias_long_desc = "UNC_CBO_TWO_HYPH",
181 .matching_pmu = "uncore_cbox_0",
182 };
183
184 static const struct perf_pmu_test_event uncore_hisi_l3c_rd_hit_cpipe = {
185 .event = {
186 .name = "uncore_hisi_l3c.rd_hit_cpipe",
187 .event = "event=0x7",
188 .desc = "Total read hits",
189 .topic = "uncore",
190 .long_desc = "Total read hits",
191 .pmu = "hisi_sccl,l3c",
192 },
193 .alias_str = "event=0x7",
194 .alias_long_desc = "Total read hits",
195 .matching_pmu = "hisi_sccl3_l3c7",
196 };
197
198 static const struct perf_pmu_test_event uncore_imc_free_running_cache_miss = {
199 .event = {
200 .name = "uncore_imc_free_running.cache_miss",
201 .event = "event=0x12",
202 .desc = "Total cache misses",
203 .topic = "uncore",
204 .long_desc = "Total cache misses",
205 .pmu = "uncore_imc_free_running",
206 },
207 .alias_str = "event=0x12",
208 .alias_long_desc = "Total cache misses",
209 .matching_pmu = "uncore_imc_free_running_0",
210 };
211
212 static const struct perf_pmu_test_event uncore_imc_cache_hits = {
213 .event = {
214 .name = "uncore_imc.cache_hits",
215 .event = "event=0x34",
216 .desc = "Total cache hits",
217 .topic = "uncore",
218 .long_desc = "Total cache hits",
219 .pmu = "uncore_imc",
220 },
221 .alias_str = "event=0x34",
222 .alias_long_desc = "Total cache hits",
223 .matching_pmu = "uncore_imc_0",
224 };
225
226 static const struct perf_pmu_test_event *uncore_events[] = {
227 &uncore_hisi_ddrc_flux_wcmd,
228 &unc_cbo_xsnp_response_miss_eviction,
229 &uncore_hyphen,
230 &uncore_two_hyph,
231 &uncore_hisi_l3c_rd_hit_cpipe,
232 &uncore_imc_free_running_cache_miss,
233 &uncore_imc_cache_hits,
234 NULL
235 };
236
237 static const struct perf_pmu_test_event sys_ddr_pmu_write_cycles = {
238 .event = {
239 .name = "sys_ddr_pmu.write_cycles",
240 .event = "event=0x2b",
241 .desc = "ddr write-cycles event",
242 .topic = "uncore",
243 .pmu = "uncore_sys_ddr_pmu",
244 .compat = "v8",
245 },
246 .alias_str = "event=0x2b",
247 .alias_long_desc = "ddr write-cycles event",
248 .matching_pmu = "uncore_sys_ddr_pmu",
249 };
250
251 static const struct perf_pmu_test_event sys_ccn_pmu_read_cycles = {
252 .event = {
253 .name = "sys_ccn_pmu.read_cycles",
254 .event = "config=0x2c",
255 .desc = "ccn read-cycles event",
256 .topic = "uncore",
257 .pmu = "uncore_sys_ccn_pmu",
258 .compat = "0x01",
259 },
260 .alias_str = "config=0x2c",
261 .alias_long_desc = "ccn read-cycles event",
262 .matching_pmu = "uncore_sys_ccn_pmu",
263 };
264
265 static const struct perf_pmu_test_event *sys_events[] = {
266 &sys_ddr_pmu_write_cycles,
267 &sys_ccn_pmu_read_cycles,
268 NULL
269 };
270
is_same(const char * reference,const char * test)271 static bool is_same(const char *reference, const char *test)
272 {
273 if (!reference && !test)
274 return true;
275
276 if (reference && !test)
277 return false;
278
279 if (!reference && test)
280 return false;
281
282 return !strcmp(reference, test);
283 }
284
compare_pmu_events(const struct pmu_event * e1,const struct pmu_event * e2)285 static int compare_pmu_events(const struct pmu_event *e1, const struct pmu_event *e2)
286 {
287 if (!is_same(e1->name, e2->name)) {
288 pr_debug2("testing event e1 %s: mismatched name string, %s vs %s\n",
289 e1->name, e1->name, e2->name);
290 return -1;
291 }
292
293 if (!is_same(e1->compat, e2->compat)) {
294 pr_debug2("testing event e1 %s: mismatched compat string, %s vs %s\n",
295 e1->name, e1->compat, e2->compat);
296 return -1;
297 }
298
299 if (!is_same(e1->event, e2->event)) {
300 pr_debug2("testing event e1 %s: mismatched event, %s vs %s\n",
301 e1->name, e1->event, e2->event);
302 return -1;
303 }
304
305 if (!is_same(e1->desc, e2->desc)) {
306 pr_debug2("testing event e1 %s: mismatched desc, %s vs %s\n",
307 e1->name, e1->desc, e2->desc);
308 return -1;
309 }
310
311 if (!is_same(e1->topic, e2->topic)) {
312 pr_debug2("testing event e1 %s: mismatched topic, %s vs %s\n",
313 e1->name, e1->topic, e2->topic);
314 return -1;
315 }
316
317 if (!is_same(e1->long_desc, e2->long_desc)) {
318 pr_debug2("testing event e1 %s: mismatched long_desc, %s vs %s\n",
319 e1->name, e1->long_desc, e2->long_desc);
320 return -1;
321 }
322
323 if (!is_same(e1->pmu, e2->pmu)) {
324 pr_debug2("testing event e1 %s: mismatched pmu string, %s vs %s\n",
325 e1->name, e1->pmu, e2->pmu);
326 return -1;
327 }
328
329 if (!is_same(e1->unit, e2->unit)) {
330 pr_debug2("testing event e1 %s: mismatched unit, %s vs %s\n",
331 e1->name, e1->unit, e2->unit);
332 return -1;
333 }
334
335 if (e1->perpkg != e2->perpkg) {
336 pr_debug2("testing event e1 %s: mismatched perpkg, %d vs %d\n",
337 e1->name, e1->perpkg, e2->perpkg);
338 return -1;
339 }
340
341 if (e1->deprecated != e2->deprecated) {
342 pr_debug2("testing event e1 %s: mismatched deprecated, %d vs %d\n",
343 e1->name, e1->deprecated, e2->deprecated);
344 return -1;
345 }
346
347 return 0;
348 }
349
compare_alias_to_test_event(struct pmu_event_info * alias,struct perf_pmu_test_event const * test_event,char const * pmu_name)350 static int compare_alias_to_test_event(struct pmu_event_info *alias,
351 struct perf_pmu_test_event const *test_event,
352 char const *pmu_name)
353 {
354 struct pmu_event const *event = &test_event->event;
355
356 /* An alias was found, ensure everything is in order */
357 if (!is_same(alias->name, event->name)) {
358 pr_debug("testing aliases PMU %s: mismatched name, %s vs %s\n",
359 pmu_name, alias->name, event->name);
360 return -1;
361 }
362
363 if (!is_same(alias->desc, event->desc)) {
364 pr_debug("testing aliases PMU %s: mismatched desc, %s vs %s\n",
365 pmu_name, alias->desc, event->desc);
366 return -1;
367 }
368
369 if (!is_same(alias->long_desc, test_event->alias_long_desc)) {
370 pr_debug("testing aliases PMU %s: mismatched long_desc, %s vs %s\n",
371 pmu_name, alias->long_desc,
372 test_event->alias_long_desc);
373 return -1;
374 }
375
376 if (!is_same(alias->topic, event->topic)) {
377 pr_debug("testing aliases PMU %s: mismatched topic, %s vs %s\n",
378 pmu_name, alias->topic, event->topic);
379 return -1;
380 }
381
382 if (!is_same(alias->str, test_event->alias_str)) {
383 pr_debug("testing aliases PMU %s: mismatched str, %s vs %s\n",
384 pmu_name, alias->str, test_event->alias_str);
385 return -1;
386 }
387
388 if (!is_same(alias->long_desc, test_event->alias_long_desc)) {
389 pr_debug("testing aliases PMU %s: mismatched long desc, %s vs %s\n",
390 pmu_name, alias->str, test_event->alias_long_desc);
391 return -1;
392 }
393
394 if (!is_same(alias->pmu_name, test_event->event.pmu) &&
395 !is_same(alias->pmu_name, "default_core")) {
396 pr_debug("testing aliases PMU %s: mismatched pmu_name, %s vs %s\n",
397 pmu_name, alias->pmu_name, test_event->event.pmu);
398 return -1;
399 }
400
401 return 0;
402 }
403
test__pmu_event_table_core_callback(const struct pmu_event * pe,const struct pmu_events_table * table __maybe_unused,void * data)404 static int test__pmu_event_table_core_callback(const struct pmu_event *pe,
405 const struct pmu_events_table *table __maybe_unused,
406 void *data)
407 {
408 int *map_events = data;
409 struct perf_pmu_test_event const **test_event_table;
410 bool found = false;
411
412 if (strcmp(pe->pmu, "default_core"))
413 test_event_table = &uncore_events[0];
414 else
415 test_event_table = &core_events[0];
416
417 for (; *test_event_table; test_event_table++) {
418 struct perf_pmu_test_event const *test_event = *test_event_table;
419 struct pmu_event const *event = &test_event->event;
420
421 if (strcmp(pe->name, event->name))
422 continue;
423 found = true;
424 (*map_events)++;
425
426 if (compare_pmu_events(pe, event))
427 return -1;
428
429 pr_debug("testing event table %s: pass\n", pe->name);
430 }
431 if (!found) {
432 pr_err("testing event table: could not find event %s\n", pe->name);
433 return -1;
434 }
435 return 0;
436 }
437
test__pmu_event_table_sys_callback(const struct pmu_event * pe,const struct pmu_events_table * table __maybe_unused,void * data)438 static int test__pmu_event_table_sys_callback(const struct pmu_event *pe,
439 const struct pmu_events_table *table __maybe_unused,
440 void *data)
441 {
442 int *map_events = data;
443 struct perf_pmu_test_event const **test_event_table;
444 bool found = false;
445
446 test_event_table = &sys_events[0];
447
448 for (; *test_event_table; test_event_table++) {
449 struct perf_pmu_test_event const *test_event = *test_event_table;
450 struct pmu_event const *event = &test_event->event;
451
452 if (strcmp(pe->name, event->name))
453 continue;
454 found = true;
455 (*map_events)++;
456
457 if (compare_pmu_events(pe, event))
458 return TEST_FAIL;
459
460 pr_debug("testing sys event table %s: pass\n", pe->name);
461 }
462 if (!found) {
463 pr_debug("testing sys event table: could not find event %s\n", pe->name);
464 return TEST_FAIL;
465 }
466 return TEST_OK;
467 }
468
469 /* Verify generated events from pmu-events.c are as expected */
test__pmu_event_table(struct test_suite * test __maybe_unused,int subtest __maybe_unused)470 static int test__pmu_event_table(struct test_suite *test __maybe_unused,
471 int subtest __maybe_unused)
472 {
473 const struct pmu_events_table *sys_event_table =
474 find_sys_events_table("pmu_events__test_soc_sys");
475 const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu");
476 int map_events = 0, expected_events, err;
477
478 /* ignore 3x sentinels */
479 expected_events = ARRAY_SIZE(core_events) +
480 ARRAY_SIZE(uncore_events) +
481 ARRAY_SIZE(sys_events) - 3;
482
483 if (!table || !sys_event_table)
484 return -1;
485
486 err = pmu_events_table__for_each_event(table, /*pmu=*/ NULL,
487 test__pmu_event_table_core_callback,
488 &map_events);
489 if (err)
490 return err;
491
492 err = pmu_events_table__for_each_event(sys_event_table, /*pmu=*/ NULL,
493 test__pmu_event_table_sys_callback,
494 &map_events);
495 if (err)
496 return err;
497
498 if (map_events != expected_events) {
499 pr_err("testing event table: found %d, but expected %d\n",
500 map_events, expected_events);
501 return TEST_FAIL;
502 }
503
504 return 0;
505 }
506
507 struct test_core_pmu_event_aliases_cb_args {
508 struct perf_pmu_test_event const *test_event;
509 int *count;
510 };
511
test_core_pmu_event_aliases_cb(void * state,struct pmu_event_info * alias)512 static int test_core_pmu_event_aliases_cb(void *state, struct pmu_event_info *alias)
513 {
514 struct test_core_pmu_event_aliases_cb_args *args = state;
515
516 if (compare_alias_to_test_event(alias, args->test_event, alias->pmu->name))
517 return -1;
518 (*args->count)++;
519 pr_debug2("testing aliases core PMU %s: matched event %s\n",
520 alias->pmu_name, alias->name);
521 return 0;
522 }
523
524 /* Verify aliases are as expected */
__test_core_pmu_event_aliases(const char * pmu_name,int * count)525 static int __test_core_pmu_event_aliases(const char *pmu_name, int *count)
526 {
527 struct perf_pmu_test_event const **test_event_table;
528 struct perf_pmu *pmu;
529 int res = 0;
530 const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu");
531
532 if (!table)
533 return -1;
534
535 test_event_table = &core_events[0];
536
537 pmu = zalloc(sizeof(*pmu));
538 if (!pmu)
539 return -1;
540
541 INIT_LIST_HEAD(&pmu->format);
542 INIT_LIST_HEAD(&pmu->aliases);
543 INIT_LIST_HEAD(&pmu->caps);
544 INIT_LIST_HEAD(&pmu->list);
545 pmu->name = strdup(pmu_name);
546 pmu->is_core = true;
547
548 pmu->events_table = table;
549 pmu_add_cpu_aliases_table(pmu, table);
550 pmu->cpu_aliases_added = true;
551 pmu->sysfs_aliases_loaded = true;
552
553 res = pmu_events_table__find_event(table, pmu, "bp_l1_btb_correct", NULL, NULL);
554 if (res != 0) {
555 pr_debug("Missing test event in test architecture");
556 return res;
557 }
558 for (; *test_event_table; test_event_table++) {
559 struct perf_pmu_test_event test_event = **test_event_table;
560 struct pmu_event const *event = &test_event.event;
561 struct test_core_pmu_event_aliases_cb_args args = {
562 .test_event = &test_event,
563 .count = count,
564 };
565 int err;
566
567 test_event.event.pmu = pmu_name;
568 err = perf_pmu__find_event(pmu, event->name, &args,
569 test_core_pmu_event_aliases_cb);
570 if (err)
571 res = err;
572 }
573 perf_pmu__delete(pmu);
574
575 return res;
576 }
577
__test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu * test_pmu)578 static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu)
579 {
580 int alias_count = 0, to_match_count = 0, matched_count = 0;
581 struct perf_pmu_test_event const **table;
582 struct perf_pmu *pmu = &test_pmu->pmu;
583 const char *pmu_name = pmu->name;
584 const struct pmu_events_table *events_table;
585 int res = 0;
586
587 events_table = find_core_events_table("testarch", "testcpu");
588 if (!events_table)
589 return -1;
590 pmu->events_table = events_table;
591 pmu_add_cpu_aliases_table(pmu, events_table);
592 pmu->cpu_aliases_added = true;
593 pmu->sysfs_aliases_loaded = true;
594 pmu_add_sys_aliases(pmu);
595
596 /* Count how many aliases we generated */
597 alias_count = perf_pmu__num_events(pmu);
598
599 /* Count how many aliases we expect from the known table */
600 for (table = &test_pmu->aliases[0]; *table; table++)
601 to_match_count++;
602
603 if (alias_count != to_match_count) {
604 pr_debug("testing aliases uncore PMU %s: mismatch expected aliases (%d) vs found (%d)\n",
605 pmu_name, to_match_count, alias_count);
606 return -1;
607 }
608
609 for (table = &test_pmu->aliases[0]; *table; table++) {
610 struct perf_pmu_test_event test_event = **table;
611 struct pmu_event const *event = &test_event.event;
612 int err;
613 struct test_core_pmu_event_aliases_cb_args args = {
614 .test_event = &test_event,
615 .count = &matched_count,
616 };
617
618 err = perf_pmu__find_event(pmu, event->name, &args,
619 test_core_pmu_event_aliases_cb);
620 if (err) {
621 res = err;
622 pr_debug("testing aliases uncore PMU %s: could not match alias %s\n",
623 pmu_name, event->name);
624 return -1;
625 }
626 }
627
628 if (alias_count != matched_count) {
629 pr_debug("testing aliases uncore PMU %s: mismatch found aliases (%d) vs matched (%d)\n",
630 pmu_name, matched_count, alias_count);
631 res = -1;
632 }
633 return res;
634 }
635
636 static struct perf_pmu_test_pmu test_pmus[] = {
637 {
638 .pmu = {
639 .name = "hisi_sccl1_ddrc2",
640 .is_uncore = 1,
641 },
642 .aliases = {
643 &uncore_hisi_ddrc_flux_wcmd,
644 },
645 },
646 {
647 .pmu = {
648 .name = "uncore_cbox_0",
649 .is_uncore = 1,
650 },
651 .aliases = {
652 &unc_cbo_xsnp_response_miss_eviction,
653 &uncore_hyphen,
654 &uncore_two_hyph,
655 },
656 },
657 {
658 .pmu = {
659 .name = "hisi_sccl3_l3c7",
660 .is_uncore = 1,
661 },
662 .aliases = {
663 &uncore_hisi_l3c_rd_hit_cpipe,
664 },
665 },
666 {
667 .pmu = {
668 .name = "uncore_imc_free_running_0",
669 .is_uncore = 1,
670 },
671 .aliases = {
672 &uncore_imc_free_running_cache_miss,
673 },
674 },
675 {
676 .pmu = {
677 .name = "uncore_imc_0",
678 .is_uncore = 1,
679 },
680 .aliases = {
681 &uncore_imc_cache_hits,
682 },
683 },
684 {
685 .pmu = {
686 .name = "uncore_sys_ddr_pmu0",
687 .is_uncore = 1,
688 .id = "v8",
689 },
690 .aliases = {
691 &sys_ddr_pmu_write_cycles,
692 },
693 },
694 {
695 .pmu = {
696 .name = "uncore_sys_ccn_pmu4",
697 .is_uncore = 1,
698 .id = "0x01",
699 },
700 .aliases = {
701 &sys_ccn_pmu_read_cycles,
702 },
703 },
704 };
705
706 /* Test that aliases generated are as expected */
test__aliases(struct test_suite * test __maybe_unused,int subtest __maybe_unused)707 static int test__aliases(struct test_suite *test __maybe_unused,
708 int subtest __maybe_unused)
709 {
710 struct perf_pmu *pmu = NULL;
711 unsigned long i;
712
713 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
714 int count = 0;
715
716 if (list_empty(&pmu->format)) {
717 pr_debug2("skipping testing core PMU %s\n", pmu->name);
718 continue;
719 }
720
721 if (__test_core_pmu_event_aliases(pmu->name, &count)) {
722 pr_debug("testing core PMU %s aliases: failed\n", pmu->name);
723 return -1;
724 }
725
726 if (count == 0) {
727 pr_debug("testing core PMU %s aliases: no events to match\n",
728 pmu->name);
729 return -1;
730 }
731
732 pr_debug("testing core PMU %s aliases: pass\n", pmu->name);
733 }
734
735 for (i = 0; i < ARRAY_SIZE(test_pmus); i++) {
736 int res;
737
738 INIT_LIST_HEAD(&test_pmus[i].pmu.format);
739 INIT_LIST_HEAD(&test_pmus[i].pmu.aliases);
740 INIT_LIST_HEAD(&test_pmus[i].pmu.caps);
741
742 res = __test_uncore_pmu_event_aliases(&test_pmus[i]);
743 if (res)
744 return res;
745 }
746
747 return 0;
748 }
749
is_number(const char * str)750 static bool is_number(const char *str)
751 {
752 char *end_ptr;
753 double v;
754
755 errno = 0;
756 v = strtod(str, &end_ptr);
757 (void)v; // We're not interested in this value, only if it is valid
758 return errno == 0 && end_ptr != str;
759 }
760
check_parse_id(const char * id,struct parse_events_error * error,struct perf_pmu * fake_pmu)761 static int check_parse_id(const char *id, struct parse_events_error *error,
762 struct perf_pmu *fake_pmu)
763 {
764 struct evlist *evlist;
765 int ret;
766 char *dup, *cur;
767
768 /* Numbers are always valid. */
769 if (is_number(id))
770 return 0;
771
772 evlist = evlist__new();
773 if (!evlist)
774 return -ENOMEM;
775
776 dup = strdup(id);
777 if (!dup)
778 return -ENOMEM;
779
780 for (cur = strchr(dup, '@') ; cur; cur = strchr(++cur, '@'))
781 *cur = '/';
782
783 ret = __parse_events(evlist, dup, /*pmu_filter=*/NULL, error, fake_pmu,
784 /*warn_if_reordered=*/true);
785 free(dup);
786
787 evlist__delete(evlist);
788 return ret;
789 }
790
check_parse_fake(const char * id)791 static int check_parse_fake(const char *id)
792 {
793 struct parse_events_error error;
794 int ret;
795
796 parse_events_error__init(&error);
797 ret = check_parse_id(id, &error, &perf_pmu__fake);
798 parse_events_error__exit(&error);
799 return ret;
800 }
801
802 struct metric {
803 struct list_head list;
804 struct metric_ref metric_ref;
805 };
806
test__parsing_callback(const struct pmu_metric * pm,const struct pmu_metrics_table * table,void * data)807 static int test__parsing_callback(const struct pmu_metric *pm,
808 const struct pmu_metrics_table *table,
809 void *data)
810 {
811 int *failures = data;
812 int k;
813 struct evlist *evlist;
814 struct perf_cpu_map *cpus;
815 struct evsel *evsel;
816 struct rblist metric_events = {
817 .nr_entries = 0,
818 };
819 int err = 0;
820
821 if (!pm->metric_expr)
822 return 0;
823
824 pr_debug("Found metric '%s'\n", pm->metric_name);
825 (*failures)++;
826
827 /*
828 * We need to prepare evlist for stat mode running on CPU 0
829 * because that's where all the stats are going to be created.
830 */
831 evlist = evlist__new();
832 if (!evlist)
833 return -ENOMEM;
834
835 cpus = perf_cpu_map__new("0");
836 if (!cpus) {
837 evlist__delete(evlist);
838 return -ENOMEM;
839 }
840
841 perf_evlist__set_maps(&evlist->core, cpus, NULL);
842
843 err = metricgroup__parse_groups_test(evlist, table, pm->metric_name, &metric_events);
844 if (err) {
845 if (!strcmp(pm->metric_name, "M1") || !strcmp(pm->metric_name, "M2") ||
846 !strcmp(pm->metric_name, "M3")) {
847 (*failures)--;
848 pr_debug("Expected broken metric %s skipping\n", pm->metric_name);
849 err = 0;
850 }
851 goto out_err;
852 }
853
854 err = evlist__alloc_stats(/*config=*/NULL, evlist, /*alloc_raw=*/false);
855 if (err)
856 goto out_err;
857 /*
858 * Add all ids with a made up value. The value may trigger divide by
859 * zero when subtracted and so try to make them unique.
860 */
861 k = 1;
862 evlist__alloc_aggr_stats(evlist, 1);
863 evlist__for_each_entry(evlist, evsel) {
864 evsel->stats->aggr->counts.val = k;
865 if (evsel__name_is(evsel, "duration_time"))
866 update_stats(&walltime_nsecs_stats, k);
867 k++;
868 }
869 evlist__for_each_entry(evlist, evsel) {
870 struct metric_event *me = metricgroup__lookup(&metric_events, evsel, false);
871
872 if (me != NULL) {
873 struct metric_expr *mexp;
874
875 list_for_each_entry (mexp, &me->head, nd) {
876 if (strcmp(mexp->metric_name, pm->metric_name))
877 continue;
878 pr_debug("Result %f\n", test_generic_metric(mexp, 0));
879 err = 0;
880 (*failures)--;
881 goto out_err;
882 }
883 }
884 }
885 pr_debug("Didn't find parsed metric %s", pm->metric_name);
886 err = 1;
887 out_err:
888 if (err)
889 pr_debug("Broken metric %s\n", pm->metric_name);
890
891 /* ... cleanup. */
892 metricgroup__rblist_exit(&metric_events);
893 evlist__free_stats(evlist);
894 perf_cpu_map__put(cpus);
895 evlist__delete(evlist);
896 return err;
897 }
898
test__parsing(struct test_suite * test __maybe_unused,int subtest __maybe_unused)899 static int test__parsing(struct test_suite *test __maybe_unused,
900 int subtest __maybe_unused)
901 {
902 int failures = 0;
903
904 pmu_for_each_core_metric(test__parsing_callback, &failures);
905 pmu_for_each_sys_metric(test__parsing_callback, &failures);
906
907 return failures == 0 ? TEST_OK : TEST_FAIL;
908 }
909
910 struct test_metric {
911 const char *str;
912 };
913
914 static struct test_metric metrics[] = {
915 { "(unc_p_power_state_occupancy.cores_c0 / unc_p_clockticks) * 100." },
916 { "imx8_ddr0@read\\-cycles@ * 4 * 4", },
917 { "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@ * 4", },
918 { "(cstate_pkg@c2\\-residency@ / msr@tsc@) * 100", },
919 { "(imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@)", },
920 };
921
metric_parse_fake(const char * metric_name,const char * str)922 static int metric_parse_fake(const char *metric_name, const char *str)
923 {
924 struct expr_parse_ctx *ctx;
925 struct hashmap_entry *cur;
926 double result;
927 int ret = -1;
928 size_t bkt;
929 int i;
930
931 pr_debug("parsing '%s': '%s'\n", metric_name, str);
932
933 ctx = expr__ctx_new();
934 if (!ctx) {
935 pr_debug("expr__ctx_new failed");
936 return TEST_FAIL;
937 }
938 ctx->sctx.is_test = true;
939 if (expr__find_ids(str, NULL, ctx) < 0) {
940 pr_err("expr__find_ids failed\n");
941 return -1;
942 }
943
944 /*
945 * Add all ids with a made up value. The value may
946 * trigger divide by zero when subtracted and so try to
947 * make them unique.
948 */
949 i = 1;
950 hashmap__for_each_entry(ctx->ids, cur, bkt)
951 expr__add_id_val(ctx, strdup(cur->pkey), i++);
952
953 hashmap__for_each_entry(ctx->ids, cur, bkt) {
954 if (check_parse_fake(cur->pkey)) {
955 pr_err("check_parse_fake failed\n");
956 goto out;
957 }
958 }
959
960 ret = 0;
961 if (expr__parse(&result, ctx, str)) {
962 /*
963 * Parsing failed, make numbers go from large to small which can
964 * resolve divide by zero issues.
965 */
966 i = 1024;
967 hashmap__for_each_entry(ctx->ids, cur, bkt)
968 expr__add_id_val(ctx, strdup(cur->pkey), i--);
969 if (expr__parse(&result, ctx, str)) {
970 pr_err("expr__parse failed for %s\n", metric_name);
971 /* The following have hard to avoid divide by zero. */
972 if (!strcmp(metric_name, "tma_clears_resteers") ||
973 !strcmp(metric_name, "tma_mispredicts_resteers"))
974 ret = 0;
975 else
976 ret = -1;
977 }
978 }
979
980 out:
981 expr__ctx_free(ctx);
982 return ret;
983 }
984
test__parsing_fake_callback(const struct pmu_metric * pm,const struct pmu_metrics_table * table __maybe_unused,void * data __maybe_unused)985 static int test__parsing_fake_callback(const struct pmu_metric *pm,
986 const struct pmu_metrics_table *table __maybe_unused,
987 void *data __maybe_unused)
988 {
989 return metric_parse_fake(pm->metric_name, pm->metric_expr);
990 }
991
992 /*
993 * Parse all the metrics for current architecture,
994 * or all defined cpus via the 'fake_pmu'
995 * in parse_events.
996 */
test__parsing_fake(struct test_suite * test __maybe_unused,int subtest __maybe_unused)997 static int test__parsing_fake(struct test_suite *test __maybe_unused,
998 int subtest __maybe_unused)
999 {
1000 int err = 0;
1001
1002 for (size_t i = 0; i < ARRAY_SIZE(metrics); i++) {
1003 err = metric_parse_fake("", metrics[i].str);
1004 if (err)
1005 return err;
1006 }
1007
1008 err = pmu_for_each_core_metric(test__parsing_fake_callback, NULL);
1009 if (err)
1010 return err;
1011
1012 return pmu_for_each_sys_metric(test__parsing_fake_callback, NULL);
1013 }
1014
test__parsing_threshold_callback(const struct pmu_metric * pm,const struct pmu_metrics_table * table __maybe_unused,void * data __maybe_unused)1015 static int test__parsing_threshold_callback(const struct pmu_metric *pm,
1016 const struct pmu_metrics_table *table __maybe_unused,
1017 void *data __maybe_unused)
1018 {
1019 if (!pm->metric_threshold)
1020 return 0;
1021 return metric_parse_fake(pm->metric_name, pm->metric_threshold);
1022 }
1023
test__parsing_threshold(struct test_suite * test __maybe_unused,int subtest __maybe_unused)1024 static int test__parsing_threshold(struct test_suite *test __maybe_unused,
1025 int subtest __maybe_unused)
1026 {
1027 int err = 0;
1028
1029 err = pmu_for_each_core_metric(test__parsing_threshold_callback, NULL);
1030 if (err)
1031 return err;
1032
1033 return pmu_for_each_sys_metric(test__parsing_threshold_callback, NULL);
1034 }
1035
1036 static struct test_case pmu_events_tests[] = {
1037 TEST_CASE("PMU event table sanity", pmu_event_table),
1038 TEST_CASE("PMU event map aliases", aliases),
1039 TEST_CASE_REASON("Parsing of PMU event table metrics", parsing,
1040 "some metrics failed"),
1041 TEST_CASE("Parsing of PMU event table metrics with fake PMUs", parsing_fake),
1042 TEST_CASE("Parsing of metric thresholds with fake PMUs", parsing_threshold),
1043 { .name = NULL, }
1044 };
1045
1046 struct test_suite suite__pmu_events = {
1047 .desc = "PMU events",
1048 .test_cases = pmu_events_tests,
1049 };
1050