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 /*
26 * Note: For when PublicDescription does not exist in the JSON, we
27 * will have no long_desc in pmu_event.long_desc, but long_desc may
28 * be set in the alias.
29 */
30 const char *alias_long_desc;
31
32 /* PMU which we should match against */
33 const char *matching_pmu;
34};
35
36struct perf_pmu_test_pmu {
37 const char *pmu_name;
38 bool pmu_is_uncore;
39 const char *pmu_id;
40 struct perf_pmu_test_event const *aliases[10];
41};
42
43static const struct perf_pmu_test_event bp_l1_btb_correct = {
44 .event = {
45 .pmu = "default_core",
46 .name = "bp_l1_btb_correct",
47 .event = "event=0x8a",
48 .desc = "L1 BTB Correction",
49 .topic = "branch",
50 },
51};
52
53static const struct perf_pmu_test_event bp_l2_btb_correct = {
54 .event = {
55 .pmu = "default_core",
56 .name = "bp_l2_btb_correct",
57 .event = "event=0x8b",
58 .desc = "L2 BTB Correction",
59 .topic = "branch",
60 },
61};
62
63static const struct perf_pmu_test_event segment_reg_loads_any = {
64 .event = {
65 .pmu = "default_core",
66 .name = "segment_reg_loads.any",
67 .event = "event=6,period=200000,umask=0x80",
68 .desc = "Number of segment register loads",
69 .topic = "other",
70 },
71};
72
73static const struct perf_pmu_test_event dispatch_blocked_any = {
74 .event = {
75 .pmu = "default_core",
76 .name = "dispatch_blocked.any",
77 .event = "event=9,period=200000,umask=0x20",
78 .desc = "Memory cluster signals to block micro-op dispatch for any reason",
79 .topic = "other",
80 },
81};
82
83static const struct perf_pmu_test_event eist_trans = {
84 .event = {
85 .pmu = "default_core",
86 .name = "eist_trans",
87 .event = "event=0x3a,period=200000",
88 .desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
89 .topic = "other",
90 },
91};
92
93static const struct perf_pmu_test_event l3_cache_rd = {
94 .event = {
95 .pmu = "default_core",
96 .name = "l3_cache_rd",
97 .event = "event=0x40",
98 .desc = "L3 cache access, read",
99 .long_desc = "Attributable Level 3 cache access, read",
100 .topic = "cache",
101 },
102 .alias_long_desc = "Attributable Level 3 cache access, read",
103};
104
105static const struct perf_pmu_test_event *core_events[] = {
106 &bp_l1_btb_correct,
107 &bp_l2_btb_correct,
108 &segment_reg_loads_any,
109 &dispatch_blocked_any,
110 &eist_trans,
111 &l3_cache_rd,
112 NULL
113};
114
115static const struct perf_pmu_test_event uncore_hisi_ddrc_flux_wcmd = {
116 .event = {
117 .name = "uncore_hisi_ddrc.flux_wcmd",
118 .event = "event=2",
119 .desc = "DDRC write commands",
120 .topic = "uncore",
121 .pmu = "hisi_sccl,ddrc",
122 },
123 .matching_pmu = "hisi_sccl1_ddrc2",
124};
125
126static const struct perf_pmu_test_event unc_cbo_xsnp_response_miss_eviction = {
127 .event = {
128 .name = "unc_cbo_xsnp_response.miss_eviction",
129 .event = "event=0x22,umask=0x81",
130 .desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
131 .topic = "uncore",
132 .pmu = "uncore_cbox",
133 },
134 .matching_pmu = "uncore_cbox_0",
135};
136
137static const struct perf_pmu_test_event uncore_hyphen = {
138 .event = {
139 .name = "event-hyphen",
140 .event = "event=0xe0",
141 .desc = "UNC_CBO_HYPHEN",
142 .topic = "uncore",
143 .pmu = "uncore_cbox",
144 },
145 .matching_pmu = "uncore_cbox_0",
146};
147
148static const struct perf_pmu_test_event uncore_two_hyph = {
149 .event = {
150 .name = "event-two-hyph",
151 .event = "event=0xc0",
152 .desc = "UNC_CBO_TWO_HYPH",
153 .topic = "uncore",
154 .pmu = "uncore_cbox",
155 },
156 .matching_pmu = "uncore_cbox_0",
157};
158
159static const struct perf_pmu_test_event uncore_hisi_l3c_rd_hit_cpipe = {
160 .event = {
161 .name = "uncore_hisi_l3c.rd_hit_cpipe",
162 .event = "event=7",
163 .desc = "Total read hits",
164 .topic = "uncore",
165 .pmu = "hisi_sccl,l3c",
166 },
167 .matching_pmu = "hisi_sccl3_l3c7",
168};
169
170static const struct perf_pmu_test_event uncore_imc_free_running_cache_miss = {
171 .event = {
172 .name = "uncore_imc_free_running.cache_miss",
173 .event = "event=0x12",
174 .desc = "Total cache misses",
175 .topic = "uncore",
176 .pmu = "uncore_imc_free_running",
177 },
178 .matching_pmu = "uncore_imc_free_running_0",
179};
180
181static const struct perf_pmu_test_event uncore_imc_cache_hits = {
182 .event = {
183 .name = "uncore_imc.cache_hits",
184 .event = "event=0x34",
185 .desc = "Total cache hits",
186 .topic = "uncore",
187 .pmu = "uncore_imc",
188 },
189 .matching_pmu = "uncore_imc_0",
190};
191
192static const struct perf_pmu_test_event *uncore_events[] = {
193 &uncore_hisi_ddrc_flux_wcmd,
194 &unc_cbo_xsnp_response_miss_eviction,
195 &uncore_hyphen,
196 &uncore_two_hyph,
197 &uncore_hisi_l3c_rd_hit_cpipe,
198 &uncore_imc_free_running_cache_miss,
199 &uncore_imc_cache_hits,
200 NULL
201};
202
203static const struct perf_pmu_test_event sys_ddr_pmu_write_cycles = {
204 .event = {
205 .name = "sys_ddr_pmu.write_cycles",
206 .event = "event=0x2b",
207 .desc = "ddr write-cycles event",
208 .topic = "uncore",
209 .pmu = "uncore_sys_ddr_pmu",
210 .compat = "v8",
211 },
212 .matching_pmu = "uncore_sys_ddr_pmu0",
213};
214
215static const struct perf_pmu_test_event sys_ccn_pmu_read_cycles = {
216 .event = {
217 .name = "sys_ccn_pmu.read_cycles",
218 .event = "config=0x2c",
219 .desc = "ccn read-cycles event",
220 .topic = "uncore",
221 .pmu = "uncore_sys_ccn_pmu",
222 .compat = "0x01",
223 },
224 .matching_pmu = "uncore_sys_ccn_pmu4",
225};
226
227static const struct perf_pmu_test_event sys_cmn_pmu_hnf_cache_miss = {
228 .event = {
229 .name = "sys_cmn_pmu.hnf_cache_miss",
230 .event = "eventid=1,type=5",
231 .desc = "Counts total cache misses in first lookup result (high priority)",
232 .topic = "uncore",
233 .pmu = "uncore_sys_cmn_pmu",
234 .compat = "(434|436|43c|43a).*",
235 },
236 .matching_pmu = "uncore_sys_cmn_pmu0",
237};
238
239static const struct perf_pmu_test_event *sys_events[] = {
240 &sys_ddr_pmu_write_cycles,
241 &sys_ccn_pmu_read_cycles,
242 &sys_cmn_pmu_hnf_cache_miss,
243 NULL
244};
245
246static bool is_same(const char *reference, const char *test)
247{
248 if (!reference && !test)
249 return true;
250
251 if (reference && !test)
252 return false;
253
254 if (!reference && test)
255 return false;
256
257 return !strcmp(reference, test);
258}
259
260static int compare_pmu_events(const struct pmu_event *e1, const struct pmu_event *e2)
261{
262 if (!is_same(reference: e1->name, test: e2->name)) {
263 pr_debug2("testing event e1 %s: mismatched name string, %s vs %s\n",
264 e1->name, e1->name, e2->name);
265 return -1;
266 }
267
268 if (!is_same(reference: e1->compat, test: e2->compat)) {
269 pr_debug2("testing event e1 %s: mismatched compat string, %s vs %s\n",
270 e1->name, e1->compat, e2->compat);
271 return -1;
272 }
273
274 if (!is_same(reference: e1->event, test: e2->event)) {
275 pr_debug2("testing event e1 %s: mismatched event, %s vs %s\n",
276 e1->name, e1->event, e2->event);
277 return -1;
278 }
279
280 if (!is_same(reference: e1->desc, test: e2->desc)) {
281 pr_debug2("testing event e1 %s: mismatched desc, %s vs %s\n",
282 e1->name, e1->desc, e2->desc);
283 return -1;
284 }
285
286 if (!is_same(reference: e1->topic, test: e2->topic)) {
287 pr_debug2("testing event e1 %s: mismatched topic, %s vs %s\n",
288 e1->name, e1->topic, e2->topic);
289 return -1;
290 }
291
292 if (!is_same(reference: e1->long_desc, test: e2->long_desc)) {
293 pr_debug2("testing event e1 %s: mismatched long_desc, %s vs %s\n",
294 e1->name, e1->long_desc, e2->long_desc);
295 return -1;
296 }
297
298 if (!is_same(reference: e1->pmu, test: e2->pmu)) {
299 pr_debug2("testing event e1 %s: mismatched pmu string, %s vs %s\n",
300 e1->name, e1->pmu, e2->pmu);
301 return -1;
302 }
303
304 if (!is_same(reference: e1->unit, test: e2->unit)) {
305 pr_debug2("testing event e1 %s: mismatched unit, %s vs %s\n",
306 e1->name, e1->unit, e2->unit);
307 return -1;
308 }
309
310 if (e1->perpkg != e2->perpkg) {
311 pr_debug2("testing event e1 %s: mismatched perpkg, %d vs %d\n",
312 e1->name, e1->perpkg, e2->perpkg);
313 return -1;
314 }
315
316 if (e1->deprecated != e2->deprecated) {
317 pr_debug2("testing event e1 %s: mismatched deprecated, %d vs %d\n",
318 e1->name, e1->deprecated, e2->deprecated);
319 return -1;
320 }
321
322 return 0;
323}
324
325static int compare_alias_to_test_event(struct pmu_event_info *alias,
326 struct perf_pmu_test_event const *test_event,
327 char const *pmu_name)
328{
329 struct pmu_event const *event = &test_event->event;
330
331 /* An alias was found, ensure everything is in order */
332 if (!is_same(reference: alias->name, test: event->name)) {
333 pr_debug("testing aliases PMU %s: mismatched name, %s vs %s\n",
334 pmu_name, alias->name, event->name);
335 return -1;
336 }
337
338 if (!is_same(reference: alias->desc, test: event->desc)) {
339 pr_debug("testing aliases PMU %s: mismatched desc, %s vs %s\n",
340 pmu_name, alias->desc, event->desc);
341 return -1;
342 }
343
344 if (!is_same(reference: alias->long_desc, test: test_event->alias_long_desc)) {
345 pr_debug("testing aliases PMU %s: mismatched long_desc, %s vs %s\n",
346 pmu_name, alias->long_desc,
347 test_event->alias_long_desc);
348 return -1;
349 }
350
351 if (!is_same(reference: alias->topic, test: event->topic)) {
352 pr_debug("testing aliases PMU %s: mismatched topic, %s vs %s\n",
353 pmu_name, alias->topic, event->topic);
354 return -1;
355 }
356
357 if (!is_same(reference: alias->str, test: test_event->event.event)) {
358 pr_debug("testing aliases PMU %s: mismatched str, %s vs %s\n",
359 pmu_name, alias->str, test_event->event.event);
360 return -1;
361 }
362
363 if (!is_same(reference: alias->long_desc, test: test_event->alias_long_desc)) {
364 pr_debug("testing aliases PMU %s: mismatched long desc, %s vs %s\n",
365 pmu_name, alias->str, test_event->alias_long_desc);
366 return -1;
367 }
368
369 if (!is_same(reference: alias->pmu_name, test: test_event->event.pmu) &&
370 !is_same(reference: alias->pmu_name, test: "default_core")) {
371 pr_debug("testing aliases PMU %s: mismatched pmu_name, %s vs %s\n",
372 pmu_name, alias->pmu_name, test_event->event.pmu);
373 return -1;
374 }
375
376 return 0;
377}
378
379static int test__pmu_event_table_core_callback(const struct pmu_event *pe,
380 const struct pmu_events_table *table __maybe_unused,
381 void *data)
382{
383 int *map_events = data;
384 struct perf_pmu_test_event const **test_event_table;
385 bool found = false;
386
387 if (strcmp(pe->pmu, "default_core"))
388 test_event_table = &uncore_events[0];
389 else
390 test_event_table = &core_events[0];
391
392 for (; *test_event_table; test_event_table++) {
393 struct perf_pmu_test_event const *test_event = *test_event_table;
394 struct pmu_event const *event = &test_event->event;
395
396 if (strcmp(pe->name, event->name))
397 continue;
398 found = true;
399 (*map_events)++;
400
401 if (compare_pmu_events(e1: pe, e2: event))
402 return -1;
403
404 pr_debug("testing event table %s: pass\n", pe->name);
405 }
406 if (!found) {
407 pr_err("testing event table: could not find event %s\n", pe->name);
408 return -1;
409 }
410 return 0;
411}
412
413static int test__pmu_event_table_sys_callback(const struct pmu_event *pe,
414 const struct pmu_events_table *table __maybe_unused,
415 void *data)
416{
417 int *map_events = data;
418 struct perf_pmu_test_event const **test_event_table;
419 bool found = false;
420
421 test_event_table = &sys_events[0];
422
423 for (; *test_event_table; test_event_table++) {
424 struct perf_pmu_test_event const *test_event = *test_event_table;
425 struct pmu_event const *event = &test_event->event;
426
427 if (strcmp(pe->name, event->name))
428 continue;
429 found = true;
430 (*map_events)++;
431
432 if (compare_pmu_events(e1: pe, e2: event))
433 return TEST_FAIL;
434
435 pr_debug("testing sys event table %s: pass\n", pe->name);
436 }
437 if (!found) {
438 pr_debug("testing sys event table: could not find event %s\n", pe->name);
439 return TEST_FAIL;
440 }
441 return TEST_OK;
442}
443
444/* Verify generated events from pmu-events.c are as expected */
445static int test__pmu_event_table(struct test_suite *test __maybe_unused,
446 int subtest __maybe_unused)
447{
448 const struct pmu_events_table *sys_event_table =
449 find_sys_events_table(name: "pmu_events__test_soc_sys");
450 const struct pmu_events_table *table = find_core_events_table(arch: "testarch", cpuid: "testcpu");
451 int map_events = 0, expected_events, err;
452
453 /* ignore 3x sentinels */
454 expected_events = ARRAY_SIZE(core_events) +
455 ARRAY_SIZE(uncore_events) +
456 ARRAY_SIZE(sys_events) - 3;
457
458 if (!table || !sys_event_table)
459 return -1;
460
461 err = pmu_events_table__for_each_event(table, /*pmu=*/ NULL,
462 fn: test__pmu_event_table_core_callback,
463 data: &map_events);
464 if (err)
465 return err;
466
467 err = pmu_events_table__for_each_event(table: sys_event_table, /*pmu=*/ NULL,
468 fn: test__pmu_event_table_sys_callback,
469 data: &map_events);
470 if (err)
471 return err;
472
473 if (map_events != expected_events) {
474 pr_err("testing event table: found %d, but expected %d\n",
475 map_events, expected_events);
476 return TEST_FAIL;
477 }
478
479 return 0;
480}
481
482struct test_core_pmu_event_aliases_cb_args {
483 struct perf_pmu_test_event const *test_event;
484 int *count;
485};
486
487static int test_core_pmu_event_aliases_cb(void *state, struct pmu_event_info *alias)
488{
489 struct test_core_pmu_event_aliases_cb_args *args = state;
490
491 if (compare_alias_to_test_event(alias, test_event: args->test_event, pmu_name: alias->pmu->name))
492 return -1;
493 (*args->count)++;
494 pr_debug2("testing aliases core PMU %s: matched event %s\n",
495 alias->pmu_name, alias->name);
496 return 0;
497}
498
499/* Verify aliases are as expected */
500static int __test_core_pmu_event_aliases(const char *pmu_name, int *count)
501{
502 struct perf_pmu_test_event const **test_event_table;
503 struct perf_pmu *pmu;
504 int res = 0;
505 const struct pmu_events_table *table = find_core_events_table(arch: "testarch", cpuid: "testcpu");
506
507 if (!table)
508 return -1;
509
510 test_event_table = &core_events[0];
511
512 pmu = zalloc(sizeof(*pmu));
513 if (!pmu)
514 return -1;
515
516 if (perf_pmu__init(pmu, PERF_PMU_TYPE_FAKE, pmu_name) != 0) {
517 perf_pmu__delete(pmu);
518 return -1;
519 }
520 pmu->is_core = true;
521
522 pmu->events_table = table;
523 pmu_add_cpu_aliases_table(pmu, table);
524 pmu->cpu_aliases_added = true;
525 pmu->sysfs_aliases_loaded = true;
526
527 res = pmu_events_table__find_event(table, pmu, name: "bp_l1_btb_correct", NULL, NULL);
528 if (res != 0) {
529 pr_debug("Missing test event in test architecture");
530 return res;
531 }
532 for (; *test_event_table; test_event_table++) {
533 struct perf_pmu_test_event test_event = **test_event_table;
534 struct pmu_event const *event = &test_event.event;
535 struct test_core_pmu_event_aliases_cb_args args = {
536 .test_event = &test_event,
537 .count = count,
538 };
539 int err;
540
541 test_event.event.pmu = pmu_name;
542 err = perf_pmu__find_event(pmu, event->name, &args,
543 test_core_pmu_event_aliases_cb);
544 if (err)
545 res = err;
546 }
547 perf_pmu__delete(pmu);
548
549 return res;
550}
551
552static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu)
553{
554 int alias_count = 0, to_match_count = 0, matched_count = 0;
555 struct perf_pmu_test_event const **table;
556 struct perf_pmu *pmu;
557 const struct pmu_events_table *events_table;
558 int res = 0;
559
560 events_table = find_core_events_table(arch: "testarch", cpuid: "testcpu");
561 if (!events_table)
562 return -1;
563
564 pmu = zalloc(sizeof(*pmu));
565 if (!pmu)
566 return -1;
567
568 if (perf_pmu__init(pmu, PERF_PMU_TYPE_FAKE, test_pmu->pmu_name) != 0) {
569 perf_pmu__delete(pmu);
570 return -1;
571 }
572 pmu->is_uncore = test_pmu->pmu_is_uncore;
573 if (test_pmu->pmu_id) {
574 pmu->id = strdup(test_pmu->pmu_id);
575 if (!pmu->id) {
576 perf_pmu__delete(pmu);
577 return -1;
578 }
579 }
580 pmu->events_table = events_table;
581 pmu_add_cpu_aliases_table(pmu, events_table);
582 pmu->cpu_aliases_added = true;
583 pmu->sysfs_aliases_loaded = true;
584 pmu_add_sys_aliases(pmu);
585
586 /* Count how many aliases we generated */
587 alias_count = perf_pmu__num_events(pmu);
588
589 /* Count how many aliases we expect from the known table */
590 for (table = &test_pmu->aliases[0]; *table; table++)
591 to_match_count++;
592
593 if (alias_count != to_match_count) {
594 pr_debug("testing aliases uncore PMU %s: mismatch expected aliases (%d) vs found (%d)\n",
595 pmu->name, to_match_count, alias_count);
596 perf_pmu__delete(pmu);
597 return -1;
598 }
599
600 for (table = &test_pmu->aliases[0]; *table; table++) {
601 struct perf_pmu_test_event test_event = **table;
602 struct pmu_event const *event = &test_event.event;
603 int err;
604 struct test_core_pmu_event_aliases_cb_args args = {
605 .test_event = &test_event,
606 .count = &matched_count,
607 };
608
609 if (strcmp(pmu->name, test_event.matching_pmu)) {
610 pr_debug("testing aliases uncore PMU %s: mismatched matching_pmu, %s vs %s\n",
611 pmu->name, test_event.matching_pmu, pmu->name);
612 perf_pmu__delete(pmu);
613 return -1;
614 }
615
616 err = perf_pmu__find_event(pmu, event->name, &args,
617 test_core_pmu_event_aliases_cb);
618 if (err) {
619 res = err;
620 pr_debug("testing aliases uncore PMU %s: could not match alias %s\n",
621 pmu->name, event->name);
622 perf_pmu__delete(pmu);
623 return -1;
624 }
625 }
626
627 if (alias_count != matched_count) {
628 pr_debug("testing aliases uncore PMU %s: mismatch found aliases (%d) vs matched (%d)\n",
629 pmu->name, matched_count, alias_count);
630 res = -1;
631 }
632 perf_pmu__delete(pmu);
633 return res;
634}
635
636static struct perf_pmu_test_pmu test_pmus[] = {
637 {
638 .pmu_name = "hisi_sccl1_ddrc2",
639 .pmu_is_uncore = 1,
640 .aliases = {
641 &uncore_hisi_ddrc_flux_wcmd,
642 },
643 },
644 {
645 .pmu_name = "uncore_cbox_0",
646 .pmu_is_uncore = 1,
647 .aliases = {
648 &unc_cbo_xsnp_response_miss_eviction,
649 &uncore_hyphen,
650 &uncore_two_hyph,
651 },
652 },
653 {
654 .pmu_name = "hisi_sccl3_l3c7",
655 .pmu_is_uncore = 1,
656 .aliases = {
657 &uncore_hisi_l3c_rd_hit_cpipe,
658 },
659 },
660 {
661 .pmu_name = "uncore_imc_free_running_0",
662 .pmu_is_uncore = 1,
663 .aliases = {
664 &uncore_imc_free_running_cache_miss,
665 },
666 },
667 {
668 .pmu_name = "uncore_imc_0",
669 .pmu_is_uncore = 1,
670 .aliases = {
671 &uncore_imc_cache_hits,
672 },
673 },
674 {
675 .pmu_name = "uncore_sys_ddr_pmu0",
676 .pmu_is_uncore = 1,
677 .pmu_id = "v8",
678 .aliases = {
679 &sys_ddr_pmu_write_cycles,
680 },
681 },
682 {
683 .pmu_name = "uncore_sys_ccn_pmu4",
684 .pmu_is_uncore = 1,
685 .pmu_id = "0x01",
686 .aliases = {
687 &sys_ccn_pmu_read_cycles,
688 },
689 },
690 {
691 .pmu_name = "uncore_sys_cmn_pmu0",
692 .pmu_is_uncore = 1,
693 .pmu_id = "43401",
694 .aliases = {
695 &sys_cmn_pmu_hnf_cache_miss,
696 },
697 },
698 {
699 .pmu_name = "uncore_sys_cmn_pmu0",
700 .pmu_is_uncore = 1,
701 .pmu_id = "43602",
702 .aliases = {
703 &sys_cmn_pmu_hnf_cache_miss,
704 },
705 },
706 {
707 .pmu_name = "uncore_sys_cmn_pmu0",
708 .pmu_is_uncore = 1,
709 .pmu_id = "43c03",
710 .aliases = {
711 &sys_cmn_pmu_hnf_cache_miss,
712 },
713 },
714 {
715 .pmu_name = "uncore_sys_cmn_pmu0",
716 .pmu_is_uncore = 1,
717 .pmu_id = "43a01",
718 .aliases = {
719 &sys_cmn_pmu_hnf_cache_miss,
720 },
721 }
722};
723
724/* Test that aliases generated are as expected */
725static int test__aliases(struct test_suite *test __maybe_unused,
726 int subtest __maybe_unused)
727{
728 struct perf_pmu *pmu = NULL;
729 unsigned long i;
730
731 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
732 int count = 0;
733
734 if (list_empty(&pmu->format)) {
735 pr_debug2("skipping testing core PMU %s\n", pmu->name);
736 continue;
737 }
738
739 if (__test_core_pmu_event_aliases(pmu_name: pmu->name, count: &count)) {
740 pr_debug("testing core PMU %s aliases: failed\n", pmu->name);
741 return -1;
742 }
743
744 if (count == 0) {
745 pr_debug("testing core PMU %s aliases: no events to match\n",
746 pmu->name);
747 return -1;
748 }
749
750 pr_debug("testing core PMU %s aliases: pass\n", pmu->name);
751 }
752
753 for (i = 0; i < ARRAY_SIZE(test_pmus); i++) {
754 int res;
755
756 res = __test_uncore_pmu_event_aliases(test_pmu: &test_pmus[i]);
757 if (res)
758 return res;
759 }
760
761 return 0;
762}
763
764static bool is_number(const char *str)
765{
766 char *end_ptr;
767 double v;
768
769 errno = 0;
770 v = strtod(str, &end_ptr);
771 (void)v; // We're not interested in this value, only if it is valid
772 return errno == 0 && end_ptr != str;
773}
774
775static int check_parse_id(const char *id, struct parse_events_error *error)
776{
777 struct evlist *evlist;
778 int ret;
779 char *dup, *cur;
780
781 /* Numbers are always valid. */
782 if (is_number(str: id))
783 return 0;
784
785 evlist = evlist__new();
786 if (!evlist)
787 return -ENOMEM;
788
789 dup = strdup(id);
790 if (!dup)
791 return -ENOMEM;
792
793 for (cur = strchr(dup, '@') ; cur; cur = strchr(++cur, '@'))
794 *cur = '/';
795
796 ret = __parse_events(evlist, dup, /*pmu_filter=*/NULL, error, /*fake_pmu=*/true,
797 /*warn_if_reordered=*/true, /*fake_tp=*/false);
798 free(dup);
799
800 evlist__delete(evlist);
801 return ret;
802}
803
804static int check_parse_fake(const char *id)
805{
806 struct parse_events_error error;
807 int ret;
808
809 parse_events_error__init(&error);
810 ret = check_parse_id(id, error: &error);
811 parse_events_error__exit(&error);
812 return ret;
813}
814
815struct metric {
816 struct list_head list;
817 struct metric_ref metric_ref;
818};
819
820static int test__parsing_callback(const struct pmu_metric *pm,
821 const struct pmu_metrics_table *table,
822 void *data)
823{
824 int *failures = data;
825 int k;
826 struct evlist *evlist;
827 struct perf_cpu_map *cpus;
828 struct evsel *evsel;
829 int err = 0;
830
831 if (!pm->metric_expr)
832 return 0;
833
834 pr_debug("Found metric '%s'\n", pm->metric_name);
835 (*failures)++;
836
837 /*
838 * We need to prepare evlist for stat mode running on CPU 0
839 * because that's where all the stats are going to be created.
840 */
841 evlist = evlist__new();
842 if (!evlist)
843 return -ENOMEM;
844
845 cpus = perf_cpu_map__new("0");
846 if (!cpus) {
847 evlist__delete(evlist);
848 return -ENOMEM;
849 }
850
851 perf_evlist__set_maps(&evlist->core, cpus, NULL);
852
853 err = metricgroup__parse_groups_test(evlist, table, pm->metric_name);
854 if (err) {
855 if (!strcmp(pm->metric_name, "M1") || !strcmp(pm->metric_name, "M2") ||
856 !strcmp(pm->metric_name, "M3")) {
857 (*failures)--;
858 pr_debug("Expected broken metric %s skipping\n", pm->metric_name);
859 err = 0;
860 }
861 goto out_err;
862 }
863
864 err = evlist__alloc_stats(/*config=*/NULL, evlist, /*alloc_raw=*/false);
865 if (err)
866 goto out_err;
867 /*
868 * Add all ids with a made up value. The value may trigger divide by
869 * zero when subtracted and so try to make them unique.
870 */
871 k = 1;
872 evlist__alloc_aggr_stats(evlist, 1);
873 evlist__for_each_entry(evlist, evsel) {
874 evsel->stats->aggr->counts.val = k;
875 k++;
876 }
877 evlist__for_each_entry(evlist, evsel) {
878 struct metric_event *me = metricgroup__lookup(&evlist->metric_events, evsel, false);
879
880 if (me != NULL) {
881 struct metric_expr *mexp;
882
883 list_for_each_entry (mexp, &me->head, nd) {
884 if (strcmp(mexp->metric_name, pm->metric_name))
885 continue;
886 pr_debug("Result %f\n", test_generic_metric(mexp, 0));
887 err = 0;
888 (*failures)--;
889 goto out_err;
890 }
891 }
892 }
893 pr_debug("Didn't find parsed metric %s", pm->metric_name);
894 err = 1;
895out_err:
896 if (err)
897 pr_debug("Broken metric %s\n", pm->metric_name);
898
899 /* ... cleanup. */
900 evlist__free_stats(evlist);
901 perf_cpu_map__put(cpus);
902 evlist__delete(evlist);
903 return err;
904}
905
906static int test__parsing(struct test_suite *test __maybe_unused,
907 int subtest __maybe_unused)
908{
909 int failures = 0;
910
911 pmu_for_each_core_metric(fn: test__parsing_callback, data: &failures);
912 pmu_for_each_sys_metric(fn: test__parsing_callback, data: &failures);
913
914 return failures == 0 ? TEST_OK : TEST_FAIL;
915}
916
917struct test_metric {
918 const char *str;
919};
920
921static struct test_metric metrics[] = {
922 { "(unc_p_power_state_occupancy.cores_c0 / unc_p_clockticks) * 100." },
923 { "imx8_ddr0@read\\-cycles@ * 4 * 4", },
924 { "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@ * 4", },
925 { "(cstate_pkg@c2\\-residency@ / msr@tsc@) * 100", },
926 { "(imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@)", },
927};
928
929static int metric_parse_fake(const char *metric_name, const char *str)
930{
931 struct expr_parse_ctx *ctx;
932 struct hashmap_entry *cur;
933 double result;
934 int ret = -1;
935 size_t bkt;
936 int i;
937
938 pr_debug("parsing '%s': '%s'\n", metric_name, str);
939
940 ctx = expr__ctx_new();
941 if (!ctx) {
942 pr_debug("expr__ctx_new failed");
943 return TEST_FAIL;
944 }
945 ctx->sctx.is_test = true;
946 if (expr__find_ids(str, NULL, ctx) < 0) {
947 pr_err("expr__find_ids failed\n");
948 return -1;
949 }
950
951 /*
952 * Add all ids with a made up value. The value may
953 * trigger divide by zero when subtracted and so try to
954 * make them unique.
955 */
956 i = 1;
957 hashmap__for_each_entry(ctx->ids, cur, bkt)
958 expr__add_id_val(ctx, strdup(cur->pkey), i++);
959
960 hashmap__for_each_entry(ctx->ids, cur, bkt) {
961 if (check_parse_fake(id: cur->pkey)) {
962 pr_err("check_parse_fake failed\n");
963 goto out;
964 }
965 }
966
967 ret = 0;
968 if (expr__parse(&result, ctx, str)) {
969 /*
970 * Parsing failed, make numbers go from large to small which can
971 * resolve divide by zero issues.
972 */
973 i = 1024;
974 hashmap__for_each_entry(ctx->ids, cur, bkt)
975 expr__add_id_val(ctx, strdup(cur->pkey), i--);
976 if (expr__parse(&result, ctx, str)) {
977 pr_err("expr__parse failed for %s\n", metric_name);
978 /* The following have hard to avoid divide by zero. */
979 if (!strcmp(metric_name, "tma_clears_resteers") ||
980 !strcmp(metric_name, "tma_mispredicts_resteers"))
981 ret = 0;
982 else
983 ret = -1;
984 }
985 }
986
987out:
988 expr__ctx_free(ctx);
989 return ret;
990}
991
992static int test__parsing_fake_callback(const struct pmu_metric *pm,
993 const struct pmu_metrics_table *table __maybe_unused,
994 void *data __maybe_unused)
995{
996 return metric_parse_fake(metric_name: pm->metric_name, str: pm->metric_expr);
997}
998
999/*
1000 * Parse all the metrics for current architecture, or all defined cpus via the
1001 * 'fake_pmu' in parse_events.
1002 */
1003static int test__parsing_fake(struct test_suite *test __maybe_unused,
1004 int subtest __maybe_unused)
1005{
1006 int err = 0;
1007
1008 for (size_t i = 0; i < ARRAY_SIZE(metrics); i++) {
1009 err = metric_parse_fake(metric_name: "", str: metrics[i].str);
1010 if (err)
1011 return err;
1012 }
1013
1014 err = pmu_for_each_core_metric(fn: test__parsing_fake_callback, NULL);
1015 if (err)
1016 return err;
1017
1018 return pmu_for_each_sys_metric(fn: test__parsing_fake_callback, NULL);
1019}
1020
1021static int test__parsing_threshold_callback(const struct pmu_metric *pm,
1022 const struct pmu_metrics_table *table __maybe_unused,
1023 void *data __maybe_unused)
1024{
1025 if (!pm->metric_threshold)
1026 return 0;
1027 return metric_parse_fake(metric_name: pm->metric_name, str: pm->metric_threshold);
1028}
1029
1030static int test__parsing_threshold(struct test_suite *test __maybe_unused,
1031 int subtest __maybe_unused)
1032{
1033 int err = 0;
1034
1035 err = pmu_for_each_core_metric(fn: test__parsing_threshold_callback, NULL);
1036 if (err)
1037 return err;
1038
1039 return pmu_for_each_sys_metric(fn: test__parsing_threshold_callback, NULL);
1040}
1041
1042static struct test_case pmu_events_tests[] = {
1043 TEST_CASE("PMU event table sanity", pmu_event_table),
1044 TEST_CASE("PMU event map aliases", aliases),
1045 TEST_CASE_REASON("Parsing of PMU event table metrics", parsing,
1046 "some metrics failed"),
1047 TEST_CASE("Parsing of PMU event table metrics with fake PMUs", parsing_fake),
1048 TEST_CASE("Parsing of metric thresholds with fake PMUs", parsing_threshold),
1049 { .name = NULL, }
1050};
1051
1052struct test_suite suite__pmu_events = {
1053 .desc = "PMU JSON event tests",
1054 .test_cases = pmu_events_tests,
1055};
1056

source code of linux/tools/perf/tests/pmu-events.c