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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
21struct 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
40struct perf_pmu_test_pmu {
41 struct perf_pmu pmu;
42 struct perf_pmu_test_event const *aliases[10];
43};
44
45static 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
57static 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
69static 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
81static 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
93static 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
105static 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
118static 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
128static 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
142static 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
156static 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
170static 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
184static 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
198static 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
212static 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
226static 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
237static 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_pmu0",
249};
250
251static 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_pmu4",
263};
264
265static const struct perf_pmu_test_event sys_cmn_pmu_hnf_cache_miss = {
266 .event = {
267 .name = "sys_cmn_pmu.hnf_cache_miss",
268 .event = "eventid=0x1,type=0x5",
269 .desc = "Counts total cache misses in first lookup result (high priority)",
270 .topic = "uncore",
271 .pmu = "uncore_sys_cmn_pmu",
272 .compat = "(434|436|43c|43a).*",
273 },
274 .alias_str = "eventid=0x1,type=0x5",
275 .alias_long_desc = "Counts total cache misses in first lookup result (high priority)",
276 .matching_pmu = "uncore_sys_cmn_pmu0",
277};
278
279static const struct perf_pmu_test_event *sys_events[] = {
280 &sys_ddr_pmu_write_cycles,
281 &sys_ccn_pmu_read_cycles,
282 &sys_cmn_pmu_hnf_cache_miss,
283 NULL
284};
285
286static bool is_same(const char *reference, const char *test)
287{
288 if (!reference && !test)
289 return true;
290
291 if (reference && !test)
292 return false;
293
294 if (!reference && test)
295 return false;
296
297 return !strcmp(reference, test);
298}
299
300static int compare_pmu_events(const struct pmu_event *e1, const struct pmu_event *e2)
301{
302 if (!is_same(e1->name, e2->name)) {
303 pr_debug2("testing event e1 %s: mismatched name string, %s vs %s\n",
304 e1->name, e1->name, e2->name);
305 return -1;
306 }
307
308 if (!is_same(e1->compat, e2->compat)) {
309 pr_debug2("testing event e1 %s: mismatched compat string, %s vs %s\n",
310 e1->name, e1->compat, e2->compat);
311 return -1;
312 }
313
314 if (!is_same(e1->event, e2->event)) {
315 pr_debug2("testing event e1 %s: mismatched event, %s vs %s\n",
316 e1->name, e1->event, e2->event);
317 return -1;
318 }
319
320 if (!is_same(e1->desc, e2->desc)) {
321 pr_debug2("testing event e1 %s: mismatched desc, %s vs %s\n",
322 e1->name, e1->desc, e2->desc);
323 return -1;
324 }
325
326 if (!is_same(e1->topic, e2->topic)) {
327 pr_debug2("testing event e1 %s: mismatched topic, %s vs %s\n",
328 e1->name, e1->topic, e2->topic);
329 return -1;
330 }
331
332 if (!is_same(e1->long_desc, e2->long_desc)) {
333 pr_debug2("testing event e1 %s: mismatched long_desc, %s vs %s\n",
334 e1->name, e1->long_desc, e2->long_desc);
335 return -1;
336 }
337
338 if (!is_same(e1->pmu, e2->pmu)) {
339 pr_debug2("testing event e1 %s: mismatched pmu string, %s vs %s\n",
340 e1->name, e1->pmu, e2->pmu);
341 return -1;
342 }
343
344 if (!is_same(e1->unit, e2->unit)) {
345 pr_debug2("testing event e1 %s: mismatched unit, %s vs %s\n",
346 e1->name, e1->unit, e2->unit);
347 return -1;
348 }
349
350 if (e1->perpkg != e2->perpkg) {
351 pr_debug2("testing event e1 %s: mismatched perpkg, %d vs %d\n",
352 e1->name, e1->perpkg, e2->perpkg);
353 return -1;
354 }
355
356 if (e1->deprecated != e2->deprecated) {
357 pr_debug2("testing event e1 %s: mismatched deprecated, %d vs %d\n",
358 e1->name, e1->deprecated, e2->deprecated);
359 return -1;
360 }
361
362 return 0;
363}
364
365static int compare_alias_to_test_event(struct pmu_event_info *alias,
366 struct perf_pmu_test_event const *test_event,
367 char const *pmu_name)
368{
369 struct pmu_event const *event = &test_event->event;
370
371 /* An alias was found, ensure everything is in order */
372 if (!is_same(alias->name, event->name)) {
373 pr_debug("testing aliases PMU %s: mismatched name, %s vs %s\n",
374 pmu_name, alias->name, event->name);
375 return -1;
376 }
377
378 if (!is_same(alias->desc, event->desc)) {
379 pr_debug("testing aliases PMU %s: mismatched desc, %s vs %s\n",
380 pmu_name, alias->desc, event->desc);
381 return -1;
382 }
383
384 if (!is_same(alias->long_desc, test_event->alias_long_desc)) {
385 pr_debug("testing aliases PMU %s: mismatched long_desc, %s vs %s\n",
386 pmu_name, alias->long_desc,
387 test_event->alias_long_desc);
388 return -1;
389 }
390
391 if (!is_same(alias->topic, event->topic)) {
392 pr_debug("testing aliases PMU %s: mismatched topic, %s vs %s\n",
393 pmu_name, alias->topic, event->topic);
394 return -1;
395 }
396
397 if (!is_same(alias->str, test_event->alias_str)) {
398 pr_debug("testing aliases PMU %s: mismatched str, %s vs %s\n",
399 pmu_name, alias->str, test_event->alias_str);
400 return -1;
401 }
402
403 if (!is_same(alias->long_desc, test_event->alias_long_desc)) {
404 pr_debug("testing aliases PMU %s: mismatched long desc, %s vs %s\n",
405 pmu_name, alias->str, test_event->alias_long_desc);
406 return -1;
407 }
408
409 if (!is_same(alias->pmu_name, test_event->event.pmu) &&
410 !is_same(alias->pmu_name, "default_core")) {
411 pr_debug("testing aliases PMU %s: mismatched pmu_name, %s vs %s\n",
412 pmu_name, alias->pmu_name, test_event->event.pmu);
413 return -1;
414 }
415
416 return 0;
417}
418
419static int test__pmu_event_table_core_callback(const struct pmu_event *pe,
420 const struct pmu_events_table *table __maybe_unused,
421 void *data)
422{
423 int *map_events = data;
424 struct perf_pmu_test_event const **test_event_table;
425 bool found = false;
426
427 if (strcmp(pe->pmu, "default_core"))
428 test_event_table = &uncore_events[0];
429 else
430 test_event_table = &core_events[0];
431
432 for (; *test_event_table; test_event_table++) {
433 struct perf_pmu_test_event const *test_event = *test_event_table;
434 struct pmu_event const *event = &test_event->event;
435
436 if (strcmp(pe->name, event->name))
437 continue;
438 found = true;
439 (*map_events)++;
440
441 if (compare_pmu_events(pe, event))
442 return -1;
443
444 pr_debug("testing event table %s: pass\n", pe->name);
445 }
446 if (!found) {
447 pr_err("testing event table: could not find event %s\n", pe->name);
448 return -1;
449 }
450 return 0;
451}
452
453static int test__pmu_event_table_sys_callback(const struct pmu_event *pe,
454 const struct pmu_events_table *table __maybe_unused,
455 void *data)
456{
457 int *map_events = data;
458 struct perf_pmu_test_event const **test_event_table;
459 bool found = false;
460
461 test_event_table = &sys_events[0];
462
463 for (; *test_event_table; test_event_table++) {
464 struct perf_pmu_test_event const *test_event = *test_event_table;
465 struct pmu_event const *event = &test_event->event;
466
467 if (strcmp(pe->name, event->name))
468 continue;
469 found = true;
470 (*map_events)++;
471
472 if (compare_pmu_events(pe, event))
473 return TEST_FAIL;
474
475 pr_debug("testing sys event table %s: pass\n", pe->name);
476 }
477 if (!found) {
478 pr_debug("testing sys event table: could not find event %s\n", pe->name);
479 return TEST_FAIL;
480 }
481 return TEST_OK;
482}
483
484/* Verify generated events from pmu-events.c are as expected */
485static int test__pmu_event_table(struct test_suite *test __maybe_unused,
486 int subtest __maybe_unused)
487{
488 const struct pmu_events_table *sys_event_table =
489 find_sys_events_table("pmu_events__test_soc_sys");
490 const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu");
491 int map_events = 0, expected_events, err;
492
493 /* ignore 3x sentinels */
494 expected_events = ARRAY_SIZE(core_events) +
495 ARRAY_SIZE(uncore_events) +
496 ARRAY_SIZE(sys_events) - 3;
497
498 if (!table || !sys_event_table)
499 return -1;
500
501 err = pmu_events_table__for_each_event(table, /*pmu=*/ NULL,
502 test__pmu_event_table_core_callback,
503 &map_events);
504 if (err)
505 return err;
506
507 err = pmu_events_table__for_each_event(sys_event_table, /*pmu=*/ NULL,
508 test__pmu_event_table_sys_callback,
509 &map_events);
510 if (err)
511 return err;
512
513 if (map_events != expected_events) {
514 pr_err("testing event table: found %d, but expected %d\n",
515 map_events, expected_events);
516 return TEST_FAIL;
517 }
518
519 return 0;
520}
521
522struct test_core_pmu_event_aliases_cb_args {
523 struct perf_pmu_test_event const *test_event;
524 int *count;
525};
526
527static int test_core_pmu_event_aliases_cb(void *state, struct pmu_event_info *alias)
528{
529 struct test_core_pmu_event_aliases_cb_args *args = state;
530
531 if (compare_alias_to_test_event(alias, args->test_event, alias->pmu->name))
532 return -1;
533 (*args->count)++;
534 pr_debug2("testing aliases core PMU %s: matched event %s\n",
535 alias->pmu_name, alias->name);
536 return 0;
537}
538
539/* Verify aliases are as expected */
540static int __test_core_pmu_event_aliases(const char *pmu_name, int *count)
541{
542 struct perf_pmu_test_event const **test_event_table;
543 struct perf_pmu *pmu;
544 int res = 0;
545 const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu");
546
547 if (!table)
548 return -1;
549
550 test_event_table = &core_events[0];
551
552 pmu = zalloc(sizeof(*pmu));
553 if (!pmu)
554 return -1;
555
556 INIT_LIST_HEAD(&pmu->format);
557 INIT_LIST_HEAD(&pmu->aliases);
558 INIT_LIST_HEAD(&pmu->caps);
559 INIT_LIST_HEAD(&pmu->list);
560 pmu->name = strdup(pmu_name);
561 pmu->is_core = true;
562
563 pmu->events_table = table;
564 pmu_add_cpu_aliases_table(pmu, table);
565 pmu->cpu_aliases_added = true;
566 pmu->sysfs_aliases_loaded = true;
567
568 res = pmu_events_table__find_event(table, pmu, "bp_l1_btb_correct", NULL, NULL);
569 if (res != 0) {
570 pr_debug("Missing test event in test architecture");
571 return res;
572 }
573 for (; *test_event_table; test_event_table++) {
574 struct perf_pmu_test_event test_event = **test_event_table;
575 struct pmu_event const *event = &test_event.event;
576 struct test_core_pmu_event_aliases_cb_args args = {
577 .test_event = &test_event,
578 .count = count,
579 };
580 int err;
581
582 test_event.event.pmu = pmu_name;
583 err = perf_pmu__find_event(pmu, event->name, &args,
584 test_core_pmu_event_aliases_cb);
585 if (err)
586 res = err;
587 }
588 perf_pmu__delete(pmu);
589
590 return res;
591}
592
593static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu)
594{
595 int alias_count = 0, to_match_count = 0, matched_count = 0;
596 struct perf_pmu_test_event const **table;
597 struct perf_pmu *pmu = &test_pmu->pmu;
598 const char *pmu_name = pmu->name;
599 const struct pmu_events_table *events_table;
600 int res = 0;
601
602 events_table = find_core_events_table("testarch", "testcpu");
603 if (!events_table)
604 return -1;
605 pmu->events_table = events_table;
606 pmu_add_cpu_aliases_table(pmu, events_table);
607 pmu->cpu_aliases_added = true;
608 pmu->sysfs_aliases_loaded = true;
609 pmu_add_sys_aliases(pmu);
610
611 /* Count how many aliases we generated */
612 alias_count = perf_pmu__num_events(pmu);
613
614 /* Count how many aliases we expect from the known table */
615 for (table = &test_pmu->aliases[0]; *table; table++)
616 to_match_count++;
617
618 if (alias_count != to_match_count) {
619 pr_debug("testing aliases uncore PMU %s: mismatch expected aliases (%d) vs found (%d)\n",
620 pmu_name, to_match_count, alias_count);
621 return -1;
622 }
623
624 for (table = &test_pmu->aliases[0]; *table; table++) {
625 struct perf_pmu_test_event test_event = **table;
626 struct pmu_event const *event = &test_event.event;
627 int err;
628 struct test_core_pmu_event_aliases_cb_args args = {
629 .test_event = &test_event,
630 .count = &matched_count,
631 };
632
633 if (strcmp(pmu_name, test_event.matching_pmu)) {
634 pr_debug("testing aliases uncore PMU %s: mismatched matching_pmu, %s vs %s\n",
635 pmu_name, test_event.matching_pmu, pmu_name);
636 return -1;
637 }
638
639 err = perf_pmu__find_event(pmu, event->name, &args,
640 test_core_pmu_event_aliases_cb);
641 if (err) {
642 res = err;
643 pr_debug("testing aliases uncore PMU %s: could not match alias %s\n",
644 pmu_name, event->name);
645 return -1;
646 }
647 }
648
649 if (alias_count != matched_count) {
650 pr_debug("testing aliases uncore PMU %s: mismatch found aliases (%d) vs matched (%d)\n",
651 pmu_name, matched_count, alias_count);
652 res = -1;
653 }
654 return res;
655}
656
657static struct perf_pmu_test_pmu test_pmus[] = {
658 {
659 .pmu = {
660 .name = "hisi_sccl1_ddrc2",
661 .is_uncore = 1,
662 },
663 .aliases = {
664 &uncore_hisi_ddrc_flux_wcmd,
665 },
666 },
667 {
668 .pmu = {
669 .name = "uncore_cbox_0",
670 .is_uncore = 1,
671 },
672 .aliases = {
673 &unc_cbo_xsnp_response_miss_eviction,
674 &uncore_hyphen,
675 &uncore_two_hyph,
676 },
677 },
678 {
679 .pmu = {
680 .name = "hisi_sccl3_l3c7",
681 .is_uncore = 1,
682 },
683 .aliases = {
684 &uncore_hisi_l3c_rd_hit_cpipe,
685 },
686 },
687 {
688 .pmu = {
689 .name = "uncore_imc_free_running_0",
690 .is_uncore = 1,
691 },
692 .aliases = {
693 &uncore_imc_free_running_cache_miss,
694 },
695 },
696 {
697 .pmu = {
698 .name = "uncore_imc_0",
699 .is_uncore = 1,
700 },
701 .aliases = {
702 &uncore_imc_cache_hits,
703 },
704 },
705 {
706 .pmu = {
707 .name = "uncore_sys_ddr_pmu0",
708 .is_uncore = 1,
709 .id = "v8",
710 },
711 .aliases = {
712 &sys_ddr_pmu_write_cycles,
713 },
714 },
715 {
716 .pmu = {
717 .name = "uncore_sys_ccn_pmu4",
718 .is_uncore = 1,
719 .id = "0x01",
720 },
721 .aliases = {
722 &sys_ccn_pmu_read_cycles,
723 },
724 },
725 {
726 .pmu = {
727 .name = (char *)"uncore_sys_cmn_pmu0",
728 .is_uncore = 1,
729 .id = (char *)"43401",
730 },
731 .aliases = {
732 &sys_cmn_pmu_hnf_cache_miss,
733 },
734 },
735 {
736 .pmu = {
737 .name = (char *)"uncore_sys_cmn_pmu0",
738 .is_uncore = 1,
739 .id = (char *)"43602",
740 },
741 .aliases = {
742 &sys_cmn_pmu_hnf_cache_miss,
743 },
744 },
745 {
746 .pmu = {
747 .name = (char *)"uncore_sys_cmn_pmu0",
748 .is_uncore = 1,
749 .id = (char *)"43c03",
750 },
751 .aliases = {
752 &sys_cmn_pmu_hnf_cache_miss,
753 },
754 },
755 {
756 .pmu = {
757 .name = (char *)"uncore_sys_cmn_pmu0",
758 .is_uncore = 1,
759 .id = (char *)"43a01",
760 },
761 .aliases = {
762 &sys_cmn_pmu_hnf_cache_miss,
763 },
764 }
765};
766
767/* Test that aliases generated are as expected */
768static int test__aliases(struct test_suite *test __maybe_unused,
769 int subtest __maybe_unused)
770{
771 struct perf_pmu *pmu = NULL;
772 unsigned long i;
773
774 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
775 int count = 0;
776
777 if (list_empty(&pmu->format)) {
778 pr_debug2("skipping testing core PMU %s\n", pmu->name);
779 continue;
780 }
781
782 if (__test_core_pmu_event_aliases(pmu->name, &count)) {
783 pr_debug("testing core PMU %s aliases: failed\n", pmu->name);
784 return -1;
785 }
786
787 if (count == 0) {
788 pr_debug("testing core PMU %s aliases: no events to match\n",
789 pmu->name);
790 return -1;
791 }
792
793 pr_debug("testing core PMU %s aliases: pass\n", pmu->name);
794 }
795
796 for (i = 0; i < ARRAY_SIZE(test_pmus); i++) {
797 int res;
798
799 INIT_LIST_HEAD(&test_pmus[i].pmu.format);
800 INIT_LIST_HEAD(&test_pmus[i].pmu.aliases);
801 INIT_LIST_HEAD(&test_pmus[i].pmu.caps);
802
803 res = __test_uncore_pmu_event_aliases(&test_pmus[i]);
804 if (res)
805 return res;
806 }
807
808 return 0;
809}
810
811static bool is_number(const char *str)
812{
813 char *end_ptr;
814 double v;
815
816 errno = 0;
817 v = strtod(str, &end_ptr);
818 (void)v; // We're not interested in this value, only if it is valid
819 return errno == 0 && end_ptr != str;
820}
821
822static int check_parse_id(const char *id, struct parse_events_error *error,
823 struct perf_pmu *fake_pmu)
824{
825 struct evlist *evlist;
826 int ret;
827 char *dup, *cur;
828
829 /* Numbers are always valid. */
830 if (is_number(id))
831 return 0;
832
833 evlist = evlist__new();
834 if (!evlist)
835 return -ENOMEM;
836
837 dup = strdup(id);
838 if (!dup)
839 return -ENOMEM;
840
841 for (cur = strchr(dup, '@') ; cur; cur = strchr(++cur, '@'))
842 *cur = '/';
843
844 ret = __parse_events(evlist, dup, /*pmu_filter=*/NULL, error, fake_pmu,
845 /*warn_if_reordered=*/true);
846 free(dup);
847
848 evlist__delete(evlist);
849 return ret;
850}
851
852static int check_parse_fake(const char *id)
853{
854 struct parse_events_error error;
855 int ret;
856
857 parse_events_error__init(&error);
858 ret = check_parse_id(id, &error, &perf_pmu__fake);
859 parse_events_error__exit(&error);
860 return ret;
861}
862
863struct metric {
864 struct list_head list;
865 struct metric_ref metric_ref;
866};
867
868static int test__parsing_callback(const struct pmu_metric *pm,
869 const struct pmu_metrics_table *table,
870 void *data)
871{
872 int *failures = data;
873 int k;
874 struct evlist *evlist;
875 struct perf_cpu_map *cpus;
876 struct evsel *evsel;
877 struct rblist metric_events = {
878 .nr_entries = 0,
879 };
880 int err = 0;
881
882 if (!pm->metric_expr)
883 return 0;
884
885 pr_debug("Found metric '%s'\n", pm->metric_name);
886 (*failures)++;
887
888 /*
889 * We need to prepare evlist for stat mode running on CPU 0
890 * because that's where all the stats are going to be created.
891 */
892 evlist = evlist__new();
893 if (!evlist)
894 return -ENOMEM;
895
896 cpus = perf_cpu_map__new("0");
897 if (!cpus) {
898 evlist__delete(evlist);
899 return -ENOMEM;
900 }
901
902 perf_evlist__set_maps(&evlist->core, cpus, NULL);
903
904 err = metricgroup__parse_groups_test(evlist, table, pm->metric_name, &metric_events);
905 if (err) {
906 if (!strcmp(pm->metric_name, "M1") || !strcmp(pm->metric_name, "M2") ||
907 !strcmp(pm->metric_name, "M3")) {
908 (*failures)--;
909 pr_debug("Expected broken metric %s skipping\n", pm->metric_name);
910 err = 0;
911 }
912 goto out_err;
913 }
914
915 err = evlist__alloc_stats(/*config=*/NULL, evlist, /*alloc_raw=*/false);
916 if (err)
917 goto out_err;
918 /*
919 * Add all ids with a made up value. The value may trigger divide by
920 * zero when subtracted and so try to make them unique.
921 */
922 k = 1;
923 evlist__alloc_aggr_stats(evlist, 1);
924 evlist__for_each_entry(evlist, evsel) {
925 evsel->stats->aggr->counts.val = k;
926 if (evsel__name_is(evsel, "duration_time"))
927 update_stats(&walltime_nsecs_stats, k);
928 k++;
929 }
930 evlist__for_each_entry(evlist, evsel) {
931 struct metric_event *me = metricgroup__lookup(&metric_events, evsel, false);
932
933 if (me != NULL) {
934 struct metric_expr *mexp;
935
936 list_for_each_entry (mexp, &me->head, nd) {
937 if (strcmp(mexp->metric_name, pm->metric_name))
938 continue;
939 pr_debug("Result %f\n", test_generic_metric(mexp, 0));
940 err = 0;
941 (*failures)--;
942 goto out_err;
943 }
944 }
945 }
946 pr_debug("Didn't find parsed metric %s", pm->metric_name);
947 err = 1;
948out_err:
949 if (err)
950 pr_debug("Broken metric %s\n", pm->metric_name);
951
952 /* ... cleanup. */
953 metricgroup__rblist_exit(&metric_events);
954 evlist__free_stats(evlist);
955 perf_cpu_map__put(cpus);
956 evlist__delete(evlist);
957 return err;
958}
959
960static int test__parsing(struct test_suite *test __maybe_unused,
961 int subtest __maybe_unused)
962{
963 int failures = 0;
964
965 pmu_for_each_core_metric(test__parsing_callback, &failures);
966 pmu_for_each_sys_metric(test__parsing_callback, &failures);
967
968 return failures == 0 ? TEST_OK : TEST_FAIL;
969}
970
971struct test_metric {
972 const char *str;
973};
974
975static struct test_metric metrics[] = {
976 { "(unc_p_power_state_occupancy.cores_c0 / unc_p_clockticks) * 100." },
977 { "imx8_ddr0@read\\-cycles@ * 4 * 4", },
978 { "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@ * 4", },
979 { "(cstate_pkg@c2\\-residency@ / msr@tsc@) * 100", },
980 { "(imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@)", },
981};
982
983static int metric_parse_fake(const char *metric_name, const char *str)
984{
985 struct expr_parse_ctx *ctx;
986 struct hashmap_entry *cur;
987 double result;
988 int ret = -1;
989 size_t bkt;
990 int i;
991
992 pr_debug("parsing '%s': '%s'\n", metric_name, str);
993
994 ctx = expr__ctx_new();
995 if (!ctx) {
996 pr_debug("expr__ctx_new failed");
997 return TEST_FAIL;
998 }
999 ctx->sctx.is_test = true;
1000 if (expr__find_ids(str, NULL, ctx) < 0) {
1001 pr_err("expr__find_ids failed\n");
1002 return -1;
1003 }
1004
1005 /*
1006 * Add all ids with a made up value. The value may
1007 * trigger divide by zero when subtracted and so try to
1008 * make them unique.
1009 */
1010 i = 1;
1011 hashmap__for_each_entry(ctx->ids, cur, bkt)
1012 expr__add_id_val(ctx, strdup(cur->pkey), i++);
1013
1014 hashmap__for_each_entry(ctx->ids, cur, bkt) {
1015 if (check_parse_fake(cur->pkey)) {
1016 pr_err("check_parse_fake failed\n");
1017 goto out;
1018 }
1019 }
1020
1021 ret = 0;
1022 if (expr__parse(&result, ctx, str)) {
1023 /*
1024 * Parsing failed, make numbers go from large to small which can
1025 * resolve divide by zero issues.
1026 */
1027 i = 1024;
1028 hashmap__for_each_entry(ctx->ids, cur, bkt)
1029 expr__add_id_val(ctx, strdup(cur->pkey), i--);
1030 if (expr__parse(&result, ctx, str)) {
1031 pr_err("expr__parse failed for %s\n", metric_name);
1032 /* The following have hard to avoid divide by zero. */
1033 if (!strcmp(metric_name, "tma_clears_resteers") ||
1034 !strcmp(metric_name, "tma_mispredicts_resteers"))
1035 ret = 0;
1036 else
1037 ret = -1;
1038 }
1039 }
1040
1041out:
1042 expr__ctx_free(ctx);
1043 return ret;
1044}
1045
1046static int test__parsing_fake_callback(const struct pmu_metric *pm,
1047 const struct pmu_metrics_table *table __maybe_unused,
1048 void *data __maybe_unused)
1049{
1050 return metric_parse_fake(pm->metric_name, pm->metric_expr);
1051}
1052
1053/*
1054 * Parse all the metrics for current architecture,
1055 * or all defined cpus via the 'fake_pmu'
1056 * in parse_events.
1057 */
1058static int test__parsing_fake(struct test_suite *test __maybe_unused,
1059 int subtest __maybe_unused)
1060{
1061 int err = 0;
1062
1063 for (size_t i = 0; i < ARRAY_SIZE(metrics); i++) {
1064 err = metric_parse_fake("", metrics[i].str);
1065 if (err)
1066 return err;
1067 }
1068
1069 err = pmu_for_each_core_metric(test__parsing_fake_callback, NULL);
1070 if (err)
1071 return err;
1072
1073 return pmu_for_each_sys_metric(test__parsing_fake_callback, NULL);
1074}
1075
1076static int test__parsing_threshold_callback(const struct pmu_metric *pm,
1077 const struct pmu_metrics_table *table __maybe_unused,
1078 void *data __maybe_unused)
1079{
1080 if (!pm->metric_threshold)
1081 return 0;
1082 return metric_parse_fake(pm->metric_name, pm->metric_threshold);
1083}
1084
1085static int test__parsing_threshold(struct test_suite *test __maybe_unused,
1086 int subtest __maybe_unused)
1087{
1088 int err = 0;
1089
1090 err = pmu_for_each_core_metric(test__parsing_threshold_callback, NULL);
1091 if (err)
1092 return err;
1093
1094 return pmu_for_each_sys_metric(test__parsing_threshold_callback, NULL);
1095}
1096
1097static struct test_case pmu_events_tests[] = {
1098 TEST_CASE("PMU event table sanity", pmu_event_table),
1099 TEST_CASE("PMU event map aliases", aliases),
1100 TEST_CASE_REASON("Parsing of PMU event table metrics", parsing,
1101 "some metrics failed"),
1102 TEST_CASE("Parsing of PMU event table metrics with fake PMUs", parsing_fake),
1103 TEST_CASE("Parsing of metric thresholds with fake PMUs", parsing_threshold),
1104 { .name = NULL, }
1105};
1106
1107struct test_suite suite__pmu_events = {
1108 .desc = "PMU events",
1109 .test_cases = pmu_events_tests,
1110};