Merge tag 'drivers-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
[linux-2.6-microblaze.git] / tools / perf / tests / pmu-events.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include "math.h"
3 #include "parse-events.h"
4 #include "pmu.h"
5 #include "tests.h"
6 #include <errno.h>
7 #include <stdio.h>
8 #include <linux/kernel.h>
9 #include <linux/zalloc.h>
10 #include "debug.h"
11 #include "../pmu-events/pmu-events.h"
12 #include "util/evlist.h"
13 #include "util/expr.h"
14 #include "util/parse-events.h"
15 #include "metricgroup.h"
16
17 struct perf_pmu_test_event {
18         /* used for matching against events from generated pmu-events.c */
19         struct pmu_event event;
20
21         /* used for matching against event aliases */
22         /* extra events for aliases */
23         const char *alias_str;
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
36 struct perf_pmu_test_pmu {
37         struct perf_pmu pmu;
38         struct perf_pmu_test_event const *aliases[10];
39 };
40
41 static const struct perf_pmu_test_event bp_l1_btb_correct = {
42         .event = {
43                 .name = "bp_l1_btb_correct",
44                 .event = "event=0x8a",
45                 .desc = "L1 BTB Correction",
46                 .topic = "branch",
47         },
48         .alias_str = "event=0x8a",
49         .alias_long_desc = "L1 BTB Correction",
50 };
51
52 static const struct perf_pmu_test_event bp_l2_btb_correct = {
53         .event = {
54                 .name = "bp_l2_btb_correct",
55                 .event = "event=0x8b",
56                 .desc = "L2 BTB Correction",
57                 .topic = "branch",
58         },
59         .alias_str = "event=0x8b",
60         .alias_long_desc = "L2 BTB Correction",
61 };
62
63 static const struct perf_pmu_test_event segment_reg_loads_any = {
64         .event = {
65                 .name = "segment_reg_loads.any",
66                 .event = "umask=0x80,period=200000,event=0x6",
67                 .desc = "Number of segment register loads",
68                 .topic = "other",
69         },
70         .alias_str = "umask=0x80,(null)=0x30d40,event=0x6",
71         .alias_long_desc = "Number of segment register loads",
72 };
73
74 static const struct perf_pmu_test_event dispatch_blocked_any = {
75         .event = {
76                 .name = "dispatch_blocked.any",
77                 .event = "umask=0x20,period=200000,event=0x9",
78                 .desc = "Memory cluster signals to block micro-op dispatch for any reason",
79                 .topic = "other",
80         },
81         .alias_str = "umask=0x20,(null)=0x30d40,event=0x9",
82         .alias_long_desc = "Memory cluster signals to block micro-op dispatch for any reason",
83 };
84
85 static const struct perf_pmu_test_event eist_trans = {
86         .event = {
87                 .name = "eist_trans",
88                 .event = "umask=0x0,period=200000,event=0x3a",
89                 .desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
90                 .topic = "other",
91         },
92         .alias_str = "umask=0,(null)=0x30d40,event=0x3a",
93         .alias_long_desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
94 };
95
96 static const struct perf_pmu_test_event l3_cache_rd = {
97         .event = {
98                 .name = "l3_cache_rd",
99                 .event = "event=0x40",
100                 .desc = "L3 cache access, read",
101                 .long_desc = "Attributable Level 3 cache access, read",
102                 .topic = "cache",
103         },
104         .alias_str = "event=0x40",
105         .alias_long_desc = "Attributable Level 3 cache access, read",
106 };
107
108 static const struct perf_pmu_test_event *core_events[] = {
109         &bp_l1_btb_correct,
110         &bp_l2_btb_correct,
111         &segment_reg_loads_any,
112         &dispatch_blocked_any,
113         &eist_trans,
114         &l3_cache_rd,
115         NULL
116 };
117
118 static const struct perf_pmu_test_event uncore_hisi_ddrc_flux_wcmd = {
119         .event = {
120                 .name = "uncore_hisi_ddrc.flux_wcmd",
121                 .event = "event=0x2",
122                 .desc = "DDRC write commands. Unit: hisi_sccl,ddrc ",
123                 .topic = "uncore",
124                 .long_desc = "DDRC write commands",
125                 .pmu = "hisi_sccl,ddrc",
126         },
127         .alias_str = "event=0x2",
128         .alias_long_desc = "DDRC write commands",
129         .matching_pmu = "hisi_sccl1_ddrc2",
130 };
131
132 static const struct perf_pmu_test_event unc_cbo_xsnp_response_miss_eviction = {
133         .event = {
134                 .name = "unc_cbo_xsnp_response.miss_eviction",
135                 .event = "umask=0x81,event=0x22",
136                 .desc = "Unit: uncore_cbox A cross-core snoop resulted from L3 Eviction which misses in some processor core",
137                 .topic = "uncore",
138                 .long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
139                 .pmu = "uncore_cbox",
140         },
141         .alias_str = "umask=0x81,event=0x22",
142         .alias_long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
143         .matching_pmu = "uncore_cbox_0",
144 };
145
146 static const struct perf_pmu_test_event uncore_hisi_l3c_rd_hit_cpipe = {
147         .event = {
148                 .name = "uncore_hisi_l3c.rd_hit_cpipe",
149                 .event = "event=0x2",
150                 .desc = "Total read hits. Unit: hisi_sccl,l3c ",
151                 .topic = "uncore",
152                 .long_desc = "Total read hits",
153                 .pmu = "hisi_sccl,l3c",
154         },
155         .alias_str = "event=0x7",
156         .alias_long_desc = "Total read hits",
157         .matching_pmu = "hisi_sccl3_l3c7",
158 };
159
160 static const struct perf_pmu_test_event uncore_imc_free_running_cache_miss = {
161         .event = {
162                 .name = "uncore_imc_free_running.cache_miss",
163                 .event = "event=0x12",
164                 .desc = "Total cache misses. Unit: uncore_imc_free_running ",
165                 .topic = "uncore",
166                 .long_desc = "Total cache misses",
167                 .pmu = "uncore_imc_free_running",
168         },
169         .alias_str = "event=0x12",
170         .alias_long_desc = "Total cache misses",
171         .matching_pmu = "uncore_imc_free_running_0",
172 };
173
174 static const struct perf_pmu_test_event uncore_imc_cache_hits = {
175         .event = {
176                 .name = "uncore_imc.cache_hits",
177                 .event = "event=0x34",
178                 .desc = "Total cache hits. Unit: uncore_imc ",
179                 .topic = "uncore",
180                 .long_desc = "Total cache hits",
181                 .pmu = "uncore_imc",
182         },
183         .alias_str = "event=0x34",
184         .alias_long_desc = "Total cache hits",
185         .matching_pmu = "uncore_imc_0",
186 };
187
188 static const struct perf_pmu_test_event *uncore_events[] = {
189         &uncore_hisi_ddrc_flux_wcmd,
190         &unc_cbo_xsnp_response_miss_eviction,
191         &uncore_hisi_l3c_rd_hit_cpipe,
192         &uncore_imc_free_running_cache_miss,
193         &uncore_imc_cache_hits,
194         NULL
195 };
196
197 static const struct perf_pmu_test_event sys_ddr_pmu_write_cycles = {
198         .event = {
199                 .name = "sys_ddr_pmu.write_cycles",
200                 .event = "event=0x2b",
201                 .desc = "ddr write-cycles event. Unit: uncore_sys_ddr_pmu ",
202                 .topic = "uncore",
203                 .pmu = "uncore_sys_ddr_pmu",
204                 .compat = "v8",
205         },
206         .alias_str = "event=0x2b",
207         .alias_long_desc = "ddr write-cycles event. Unit: uncore_sys_ddr_pmu ",
208         .matching_pmu = "uncore_sys_ddr_pmu",
209 };
210
211 static const struct perf_pmu_test_event *sys_events[] = {
212         &sys_ddr_pmu_write_cycles,
213         NULL
214 };
215
216 static bool is_same(const char *reference, const char *test)
217 {
218         if (!reference && !test)
219                 return true;
220
221         if (reference && !test)
222                 return false;
223
224         if (!reference && test)
225                 return false;
226
227         return !strcmp(reference, test);
228 }
229
230 static struct pmu_events_map *__test_pmu_get_events_map(void)
231 {
232         struct pmu_events_map *map;
233
234         for (map = &pmu_events_map[0]; map->cpuid; map++) {
235                 if (!strcmp(map->cpuid, "testcpu"))
236                         return map;
237         }
238
239         pr_err("could not find test events map\n");
240
241         return NULL;
242 }
243
244 static struct pmu_event *__test_pmu_get_sys_events_table(void)
245 {
246         struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
247
248         for ( ; tables->name; tables++) {
249                 if (!strcmp("pme_test_soc_sys", tables->name))
250                         return tables->table;
251         }
252
253         return NULL;
254 }
255
256 static int compare_pmu_events(struct pmu_event *e1, const struct pmu_event *e2)
257 {
258         if (!is_same(e1->desc, e2->desc)) {
259                 pr_debug2("testing event e1 %s: mismatched desc, %s vs %s\n",
260                           e1->name, e1->desc, e2->desc);
261                 return -1;
262         }
263
264         if (!is_same(e1->topic, e2->topic)) {
265                 pr_debug2("testing event e1 %s: mismatched topic, %s vs %s\n",
266                           e1->name, e1->topic, e2->topic);
267                 return -1;
268         }
269
270         if (!is_same(e1->long_desc, e2->long_desc)) {
271                 pr_debug2("testing event e1 %s: mismatched long_desc, %s vs %s\n",
272                           e1->name, e1->long_desc, e2->long_desc);
273                 return -1;
274         }
275
276         if (!is_same(e1->unit, e2->unit)) {
277                 pr_debug2("testing event e1 %s: mismatched unit, %s vs %s\n",
278                           e1->name, e1->unit, e2->unit);
279                 return -1;
280         }
281
282         if (!is_same(e1->perpkg, e2->perpkg)) {
283                 pr_debug2("testing event e1 %s: mismatched perpkg, %s vs %s\n",
284                           e1->name, e1->perpkg, e2->perpkg);
285                 return -1;
286         }
287
288         if (!is_same(e1->metric_expr, e2->metric_expr)) {
289                 pr_debug2("testing event e1 %s: mismatched metric_expr, %s vs %s\n",
290                           e1->name, e1->metric_expr, e2->metric_expr);
291                 return -1;
292         }
293
294         if (!is_same(e1->metric_name, e2->metric_name)) {
295                 pr_debug2("testing event e1 %s: mismatched metric_name, %s vs %s\n",
296                           e1->name,     e1->metric_name, e2->metric_name);
297                 return -1;
298         }
299
300         if (!is_same(e1->deprecated, e2->deprecated)) {
301                 pr_debug2("testing event e1 %s: mismatched deprecated, %s vs %s\n",
302                           e1->name, e1->deprecated, e2->deprecated);
303                 return -1;
304         }
305
306         if (!is_same(e1->pmu, e2->pmu)) {
307                 pr_debug2("testing event e1 %s: mismatched pmu string, %s vs %s\n",
308                           e1->name, e1->pmu, e2->pmu);
309                 return -1;
310         }
311
312         if (!is_same(e1->compat, e2->compat)) {
313                 pr_debug2("testing event e1 %s: mismatched compat string, %s vs %s\n",
314                           e1->name, e1->compat, e2->compat);
315                 return -1;
316         }
317
318         return 0;
319 }
320
321 static int compare_alias_to_test_event(struct perf_pmu_alias *alias,
322                                 struct perf_pmu_test_event const *test_event,
323                                 char const *pmu_name)
324 {
325         struct pmu_event const *event = &test_event->event;
326
327         /* An alias was found, ensure everything is in order */
328         if (!is_same(alias->name, event->name)) {
329                 pr_debug("testing aliases PMU %s: mismatched name, %s vs %s\n",
330                           pmu_name, alias->name, event->name);
331                 return -1;
332         }
333
334         if (!is_same(alias->desc, event->desc)) {
335                 pr_debug("testing aliases PMU %s: mismatched desc, %s vs %s\n",
336                           pmu_name, alias->desc, event->desc);
337                 return -1;
338         }
339
340         if (!is_same(alias->long_desc, test_event->alias_long_desc)) {
341                 pr_debug("testing aliases PMU %s: mismatched long_desc, %s vs %s\n",
342                           pmu_name, alias->long_desc,
343                           test_event->alias_long_desc);
344                 return -1;
345         }
346
347         if (!is_same(alias->topic, event->topic)) {
348                 pr_debug("testing aliases PMU %s: mismatched topic, %s vs %s\n",
349                           pmu_name, alias->topic, event->topic);
350                 return -1;
351         }
352
353         if (!is_same(alias->str, test_event->alias_str)) {
354                 pr_debug("testing aliases PMU %s: mismatched str, %s vs %s\n",
355                           pmu_name, alias->str, test_event->alias_str);
356                 return -1;
357         }
358
359         if (!is_same(alias->long_desc, test_event->alias_long_desc)) {
360                 pr_debug("testing aliases PMU %s: mismatched long desc, %s vs %s\n",
361                           pmu_name, alias->str, test_event->alias_long_desc);
362                 return -1;
363         }
364
365
366         if (!is_same(alias->pmu_name, test_event->event.pmu)) {
367                 pr_debug("testing aliases PMU %s: mismatched pmu_name, %s vs %s\n",
368                           pmu_name, alias->pmu_name, test_event->event.pmu);
369                 return -1;
370         }
371
372         return 0;
373 }
374
375 /* Verify generated events from pmu-events.c are as expected */
376 static int test_pmu_event_table(void)
377 {
378         struct pmu_event *sys_event_tables = __test_pmu_get_sys_events_table();
379         struct pmu_events_map *map = __test_pmu_get_events_map();
380         struct pmu_event *table;
381         int map_events = 0, expected_events;
382
383         /* ignore 3x sentinels */
384         expected_events = ARRAY_SIZE(core_events) +
385                           ARRAY_SIZE(uncore_events) +
386                           ARRAY_SIZE(sys_events) - 3;
387
388         if (!map || !sys_event_tables)
389                 return -1;
390
391         for (table = map->table; table->name; table++) {
392                 struct perf_pmu_test_event const **test_event_table;
393                 bool found = false;
394
395                 if (table->pmu)
396                         test_event_table = &uncore_events[0];
397                 else
398                         test_event_table = &core_events[0];
399
400                 for (; *test_event_table; test_event_table++) {
401                         struct perf_pmu_test_event const *test_event = *test_event_table;
402                         struct pmu_event const *event = &test_event->event;
403
404                         if (strcmp(table->name, event->name))
405                                 continue;
406                         found = true;
407                         map_events++;
408
409                         if (compare_pmu_events(table, event))
410                                 return -1;
411
412                         pr_debug("testing event table %s: pass\n", table->name);
413                 }
414
415                 if (!found) {
416                         pr_err("testing event table: could not find event %s\n",
417                                table->name);
418                         return -1;
419                 }
420         }
421
422         for (table = sys_event_tables; table->name; table++) {
423                 struct perf_pmu_test_event const **test_event_table;
424                 bool found = false;
425
426                 test_event_table = &sys_events[0];
427
428                 for (; *test_event_table; test_event_table++) {
429                         struct perf_pmu_test_event const *test_event = *test_event_table;
430                         struct pmu_event const *event = &test_event->event;
431
432                         if (strcmp(table->name, event->name))
433                                 continue;
434                         found = true;
435                         map_events++;
436
437                         if (compare_pmu_events(table, event))
438                                 return -1;
439
440                         pr_debug("testing sys event table %s: pass\n", table->name);
441                 }
442                 if (!found) {
443                         pr_debug("testing event table: could not find event %s\n",
444                                    table->name);
445                         return -1;
446                 }
447         }
448
449         if (map_events != expected_events) {
450                 pr_err("testing event table: found %d, but expected %d\n",
451                        map_events, expected_events);
452                 return -1;
453         }
454
455         return 0;
456 }
457
458 static struct perf_pmu_alias *find_alias(const char *test_event, struct list_head *aliases)
459 {
460         struct perf_pmu_alias *alias;
461
462         list_for_each_entry(alias, aliases, list)
463                 if (!strcmp(test_event, alias->name))
464                         return alias;
465
466         return NULL;
467 }
468
469 /* Verify aliases are as expected */
470 static int __test_core_pmu_event_aliases(char *pmu_name, int *count)
471 {
472         struct perf_pmu_test_event const **test_event_table;
473         struct perf_pmu *pmu;
474         LIST_HEAD(aliases);
475         int res = 0;
476         struct pmu_events_map *map = __test_pmu_get_events_map();
477         struct perf_pmu_alias *a, *tmp;
478
479         if (!map)
480                 return -1;
481
482         test_event_table = &core_events[0];
483
484         pmu = zalloc(sizeof(*pmu));
485         if (!pmu)
486                 return -1;
487
488         pmu->name = pmu_name;
489
490         pmu_add_cpu_aliases_map(&aliases, pmu, map);
491
492         for (; *test_event_table; test_event_table++) {
493                 struct perf_pmu_test_event const *test_event = *test_event_table;
494                 struct pmu_event const *event = &test_event->event;
495                 struct perf_pmu_alias *alias = find_alias(event->name, &aliases);
496
497                 if (!alias) {
498                         pr_debug("testing aliases core PMU %s: no alias, alias_table->name=%s\n",
499                                   pmu_name, event->name);
500                         res = -1;
501                         break;
502                 }
503
504                 if (compare_alias_to_test_event(alias, test_event, pmu_name)) {
505                         res = -1;
506                         break;
507                 }
508
509                 (*count)++;
510                 pr_debug2("testing aliases core PMU %s: matched event %s\n",
511                           pmu_name, alias->name);
512         }
513
514         list_for_each_entry_safe(a, tmp, &aliases, list) {
515                 list_del(&a->list);
516                 perf_pmu_free_alias(a);
517         }
518         free(pmu);
519         return res;
520 }
521
522 static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu)
523 {
524         int alias_count = 0, to_match_count = 0, matched_count = 0;
525         struct perf_pmu_test_event const **table;
526         struct perf_pmu *pmu = &test_pmu->pmu;
527         const char *pmu_name = pmu->name;
528         struct perf_pmu_alias *a, *tmp, *alias;
529         struct pmu_events_map *map;
530         LIST_HEAD(aliases);
531         int res = 0;
532
533         map = __test_pmu_get_events_map();
534         if (!map)
535                 return -1;
536         pmu_add_cpu_aliases_map(&aliases, pmu, map);
537         pmu_add_sys_aliases(&aliases, pmu);
538
539         /* Count how many aliases we generated */
540         list_for_each_entry(alias, &aliases, list)
541                 alias_count++;
542
543         /* Count how many aliases we expect from the known table */
544         for (table = &test_pmu->aliases[0]; *table; table++)
545                 to_match_count++;
546
547         if (alias_count != to_match_count) {
548                 pr_debug("testing aliases uncore PMU %s: mismatch expected aliases (%d) vs found (%d)\n",
549                          pmu_name, to_match_count, alias_count);
550                 res = -1;
551                 goto out;
552         }
553
554         list_for_each_entry(alias, &aliases, list) {
555                 bool matched = false;
556
557                 for (table = &test_pmu->aliases[0]; *table; table++) {
558                         struct perf_pmu_test_event const *test_event = *table;
559                         struct pmu_event const *event = &test_event->event;
560
561                         if (!strcmp(event->name, alias->name)) {
562                                 if (compare_alias_to_test_event(alias,
563                                                         test_event,
564                                                         pmu_name)) {
565                                         continue;
566                                 }
567                                 matched = true;
568                                 matched_count++;
569                         }
570                 }
571
572                 if (matched == false) {
573                         pr_debug("testing aliases uncore PMU %s: could not match alias %s\n",
574                                  pmu_name, alias->name);
575                         res = -1;
576                         goto out;
577                 }
578         }
579
580         if (alias_count != matched_count) {
581                 pr_debug("testing aliases uncore PMU %s: mismatch found aliases (%d) vs matched (%d)\n",
582                          pmu_name, matched_count, alias_count);
583                 res = -1;
584         }
585
586 out:
587         list_for_each_entry_safe(a, tmp, &aliases, list) {
588                 list_del(&a->list);
589                 perf_pmu_free_alias(a);
590         }
591         return res;
592 }
593
594 static struct perf_pmu_test_pmu test_pmus[] = {
595         {
596                 .pmu = {
597                         .name = (char *)"hisi_sccl1_ddrc2",
598                         .is_uncore = 1,
599                 },
600                 .aliases = {
601                         &uncore_hisi_ddrc_flux_wcmd,
602                 },
603         },
604         {
605                 .pmu = {
606                         .name = (char *)"uncore_cbox_0",
607                         .is_uncore = 1,
608                 },
609                 .aliases = {
610                         &unc_cbo_xsnp_response_miss_eviction,
611                 },
612         },
613         {
614                 .pmu = {
615                         .name = (char *)"hisi_sccl3_l3c7",
616                         .is_uncore = 1,
617                 },
618                 .aliases = {
619                         &uncore_hisi_l3c_rd_hit_cpipe,
620                 },
621         },
622         {
623                 .pmu = {
624                         .name = (char *)"uncore_imc_free_running_0",
625                         .is_uncore = 1,
626                 },
627                 .aliases = {
628                         &uncore_imc_free_running_cache_miss,
629                 },
630         },
631         {
632                 .pmu = {
633                         .name = (char *)"uncore_imc_0",
634                         .is_uncore = 1,
635                 },
636                 .aliases = {
637                         &uncore_imc_cache_hits,
638                 },
639         },
640         {
641                 .pmu = {
642                         .name = (char *)"uncore_sys_ddr_pmu0",
643                         .is_uncore = 1,
644                         .id = (char *)"v8",
645                 },
646                 .aliases = {
647                         &sys_ddr_pmu_write_cycles,
648                 },
649         },
650 };
651
652 /* Test that aliases generated are as expected */
653 static int test_aliases(void)
654 {
655         struct perf_pmu *pmu = NULL;
656         unsigned long i;
657
658         while ((pmu = perf_pmu__scan(pmu)) != NULL) {
659                 int count = 0;
660
661                 if (!is_pmu_core(pmu->name))
662                         continue;
663
664                 if (list_empty(&pmu->format)) {
665                         pr_debug2("skipping testing core PMU %s\n", pmu->name);
666                         continue;
667                 }
668
669                 if (__test_core_pmu_event_aliases(pmu->name, &count)) {
670                         pr_debug("testing core PMU %s aliases: failed\n", pmu->name);
671                         return -1;
672                 }
673
674                 if (count == 0) {
675                         pr_debug("testing core PMU %s aliases: no events to match\n",
676                                   pmu->name);
677                         return -1;
678                 }
679
680                 pr_debug("testing core PMU %s aliases: pass\n", pmu->name);
681         }
682
683         for (i = 0; i < ARRAY_SIZE(test_pmus); i++) {
684                 int res = __test_uncore_pmu_event_aliases(&test_pmus[i]);
685
686                 if (res)
687                         return res;
688         }
689
690         return 0;
691 }
692
693 static bool is_number(const char *str)
694 {
695         char *end_ptr;
696         double v;
697
698         errno = 0;
699         v = strtod(str, &end_ptr);
700         (void)v; // We're not interested in this value, only if it is valid
701         return errno == 0 && end_ptr != str;
702 }
703
704 static int check_parse_id(const char *id, struct parse_events_error *error,
705                           struct perf_pmu *fake_pmu)
706 {
707         struct evlist *evlist;
708         int ret;
709
710         /* Numbers are always valid. */
711         if (is_number(id))
712                 return 0;
713
714         evlist = evlist__new();
715         if (!evlist)
716                 return -ENOMEM;
717         ret = __parse_events(evlist, id, error, fake_pmu);
718         evlist__delete(evlist);
719         return ret;
720 }
721
722 static int check_parse_cpu(const char *id, bool same_cpu, struct pmu_event *pe)
723 {
724         struct parse_events_error error = { .idx = 0, };
725
726         int ret = check_parse_id(id, &error, NULL);
727         if (ret && same_cpu) {
728                 pr_warning("Parse event failed metric '%s' id '%s' expr '%s'\n",
729                         pe->metric_name, id, pe->metric_expr);
730                 pr_warning("Error string '%s' help '%s'\n", error.str,
731                         error.help);
732         } else if (ret) {
733                 pr_debug3("Parse event failed, but for an event that may not be supported by this CPU.\nid '%s' metric '%s' expr '%s'\n",
734                           id, pe->metric_name, pe->metric_expr);
735                 ret = 0;
736         }
737         free(error.str);
738         free(error.help);
739         free(error.first_str);
740         free(error.first_help);
741         return ret;
742 }
743
744 static int check_parse_fake(const char *id)
745 {
746         struct parse_events_error error = { .idx = 0, };
747         int ret = check_parse_id(id, &error, &perf_pmu__fake);
748
749         free(error.str);
750         free(error.help);
751         free(error.first_str);
752         free(error.first_help);
753         return ret;
754 }
755
756 static void expr_failure(const char *msg,
757                          const struct pmu_events_map *map,
758                          const struct pmu_event *pe)
759 {
760         pr_debug("%s for map %s %s %s\n",
761                 msg, map->cpuid, map->version, map->type);
762         pr_debug("On metric %s\n", pe->metric_name);
763         pr_debug("On expression %s\n", pe->metric_expr);
764 }
765
766 struct metric {
767         struct list_head list;
768         struct metric_ref metric_ref;
769 };
770
771 static int resolve_metric_simple(struct expr_parse_ctx *pctx,
772                                  struct list_head *compound_list,
773                                  struct pmu_events_map *map,
774                                  const char *metric_name)
775 {
776         struct hashmap_entry *cur, *cur_tmp;
777         struct metric *metric, *tmp;
778         size_t bkt;
779         bool all;
780         int rc;
781
782         do {
783                 all = true;
784                 hashmap__for_each_entry_safe((&pctx->ids), cur, cur_tmp, bkt) {
785                         struct metric_ref *ref;
786                         struct pmu_event *pe;
787
788                         pe = metricgroup__find_metric(cur->key, map);
789                         if (!pe)
790                                 continue;
791
792                         if (!strcmp(metric_name, (char *)cur->key)) {
793                                 pr_warning("Recursion detected for metric %s\n", metric_name);
794                                 rc = -1;
795                                 goto out_err;
796                         }
797
798                         all = false;
799
800                         /* The metric key itself needs to go out.. */
801                         expr__del_id(pctx, cur->key);
802
803                         metric = malloc(sizeof(*metric));
804                         if (!metric) {
805                                 rc = -ENOMEM;
806                                 goto out_err;
807                         }
808
809                         ref = &metric->metric_ref;
810                         ref->metric_name = pe->metric_name;
811                         ref->metric_expr = pe->metric_expr;
812                         list_add_tail(&metric->list, compound_list);
813
814                         rc = expr__find_other(pe->metric_expr, NULL, pctx, 0);
815                         if (rc)
816                                 goto out_err;
817                         break; /* The hashmap has been modified, so restart */
818                 }
819         } while (!all);
820
821         return 0;
822
823 out_err:
824         list_for_each_entry_safe(metric, tmp, compound_list, list)
825                 free(metric);
826
827         return rc;
828
829 }
830
831 static int test_parsing(void)
832 {
833         struct pmu_events_map *cpus_map = pmu_events_map__find();
834         struct pmu_events_map *map;
835         struct pmu_event *pe;
836         int i, j, k;
837         int ret = 0;
838         struct expr_parse_ctx ctx;
839         double result;
840
841         i = 0;
842         for (;;) {
843                 map = &pmu_events_map[i++];
844                 if (!map->table)
845                         break;
846                 j = 0;
847                 for (;;) {
848                         struct metric *metric, *tmp;
849                         struct hashmap_entry *cur;
850                         LIST_HEAD(compound_list);
851                         size_t bkt;
852
853                         pe = &map->table[j++];
854                         if (!pe->name && !pe->metric_group && !pe->metric_name)
855                                 break;
856                         if (!pe->metric_expr)
857                                 continue;
858                         expr__ctx_init(&ctx);
859                         if (expr__find_other(pe->metric_expr, NULL, &ctx, 0)
860                                   < 0) {
861                                 expr_failure("Parse other failed", map, pe);
862                                 ret++;
863                                 continue;
864                         }
865
866                         if (resolve_metric_simple(&ctx, &compound_list, map,
867                                                   pe->metric_name)) {
868                                 expr_failure("Could not resolve metrics", map, pe);
869                                 ret++;
870                                 goto exit; /* Don't tolerate errors due to severity */
871                         }
872
873                         /*
874                          * Add all ids with a made up value. The value may
875                          * trigger divide by zero when subtracted and so try to
876                          * make them unique.
877                          */
878                         k = 1;
879                         hashmap__for_each_entry((&ctx.ids), cur, bkt)
880                                 expr__add_id_val(&ctx, strdup(cur->key), k++);
881
882                         hashmap__for_each_entry((&ctx.ids), cur, bkt) {
883                                 if (check_parse_cpu(cur->key, map == cpus_map,
884                                                    pe))
885                                         ret++;
886                         }
887
888                         list_for_each_entry_safe(metric, tmp, &compound_list, list) {
889                                 expr__add_ref(&ctx, &metric->metric_ref);
890                                 free(metric);
891                         }
892
893                         if (expr__parse(&result, &ctx, pe->metric_expr, 0)) {
894                                 expr_failure("Parse failed", map, pe);
895                                 ret++;
896                         }
897                         expr__ctx_clear(&ctx);
898                 }
899         }
900         /* TODO: fail when not ok */
901 exit:
902         return ret == 0 ? TEST_OK : TEST_SKIP;
903 }
904
905 struct test_metric {
906         const char *str;
907 };
908
909 static struct test_metric metrics[] = {
910         { "(unc_p_power_state_occupancy.cores_c0 / unc_p_clockticks) * 100." },
911         { "imx8_ddr0@read\\-cycles@ * 4 * 4", },
912         { "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@ * 4", },
913         { "(cstate_pkg@c2\\-residency@ / msr@tsc@) * 100", },
914         { "(imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@)", },
915 };
916
917 static int metric_parse_fake(const char *str)
918 {
919         struct expr_parse_ctx ctx;
920         struct hashmap_entry *cur;
921         double result;
922         int ret = -1;
923         size_t bkt;
924         int i;
925
926         pr_debug("parsing '%s'\n", str);
927
928         expr__ctx_init(&ctx);
929         if (expr__find_other(str, NULL, &ctx, 0) < 0) {
930                 pr_err("expr__find_other failed\n");
931                 return -1;
932         }
933
934         /*
935          * Add all ids with a made up value. The value may
936          * trigger divide by zero when subtracted and so try to
937          * make them unique.
938          */
939         i = 1;
940         hashmap__for_each_entry((&ctx.ids), cur, bkt)
941                 expr__add_id_val(&ctx, strdup(cur->key), i++);
942
943         hashmap__for_each_entry((&ctx.ids), cur, bkt) {
944                 if (check_parse_fake(cur->key)) {
945                         pr_err("check_parse_fake failed\n");
946                         goto out;
947                 }
948         }
949
950         if (expr__parse(&result, &ctx, str, 0))
951                 pr_err("expr__parse failed\n");
952         else
953                 ret = 0;
954
955 out:
956         expr__ctx_clear(&ctx);
957         return ret;
958 }
959
960 /*
961  * Parse all the metrics for current architecture,
962  * or all defined cpus via the 'fake_pmu'
963  * in parse_events.
964  */
965 static int test_parsing_fake(void)
966 {
967         struct pmu_events_map *map;
968         struct pmu_event *pe;
969         unsigned int i, j;
970         int err = 0;
971
972         for (i = 0; i < ARRAY_SIZE(metrics); i++) {
973                 err = metric_parse_fake(metrics[i].str);
974                 if (err)
975                         return err;
976         }
977
978         i = 0;
979         for (;;) {
980                 map = &pmu_events_map[i++];
981                 if (!map->table)
982                         break;
983                 j = 0;
984                 for (;;) {
985                         pe = &map->table[j++];
986                         if (!pe->name && !pe->metric_group && !pe->metric_name)
987                                 break;
988                         if (!pe->metric_expr)
989                                 continue;
990                         err = metric_parse_fake(pe->metric_expr);
991                         if (err)
992                                 return err;
993                 }
994         }
995
996         return 0;
997 }
998
999 static const struct {
1000         int (*func)(void);
1001         const char *desc;
1002 } pmu_events_testcase_table[] = {
1003         {
1004                 .func = test_pmu_event_table,
1005                 .desc = "PMU event table sanity",
1006         },
1007         {
1008                 .func = test_aliases,
1009                 .desc = "PMU event map aliases",
1010         },
1011         {
1012                 .func = test_parsing,
1013                 .desc = "Parsing of PMU event table metrics",
1014         },
1015         {
1016                 .func = test_parsing_fake,
1017                 .desc = "Parsing of PMU event table metrics with fake PMUs",
1018         },
1019 };
1020
1021 const char *test__pmu_events_subtest_get_desc(int subtest)
1022 {
1023         if (subtest < 0 ||
1024             subtest >= (int)ARRAY_SIZE(pmu_events_testcase_table))
1025                 return NULL;
1026         return pmu_events_testcase_table[subtest].desc;
1027 }
1028
1029 const char *test__pmu_events_subtest_skip_reason(int subtest)
1030 {
1031         if (subtest < 0 ||
1032             subtest >= (int)ARRAY_SIZE(pmu_events_testcase_table))
1033                 return NULL;
1034         if (pmu_events_testcase_table[subtest].func != test_parsing)
1035                 return NULL;
1036         return "some metrics failed";
1037 }
1038
1039 int test__pmu_events_subtest_get_nr(void)
1040 {
1041         return (int)ARRAY_SIZE(pmu_events_testcase_table);
1042 }
1043
1044 int test__pmu_events(struct test *test __maybe_unused, int subtest)
1045 {
1046         if (subtest < 0 ||
1047             subtest >= (int)ARRAY_SIZE(pmu_events_testcase_table))
1048                 return TEST_FAIL;
1049         return pmu_events_testcase_table[subtest].func();
1050 }