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 <perf/evlist.h>
13 #include "util/evlist.h"
14 #include "util/expr.h"
15 #include "util/parse-events.h"
16 #include "metricgroup.h"
17 #include "stat.h"
18
19 struct perf_pmu_test_event {
20 /* used for matching against events from generated pmu-events.c */
21 struct pmu_event event;
22
23 /* used for matching against event aliases */
24 /* extra events for aliases */
25 const char *alias_str;
26
27 /*
28 * Note: For when PublicDescription does not exist in the JSON, we
29 * will have no long_desc in pmu_event.long_desc, but long_desc may
30 * be set in the alias.
31 */
32 const char *alias_long_desc;
33
34 /* PMU which we should match against */
35 const char *matching_pmu;
36 };
37
38 struct perf_pmu_test_pmu {
39 struct perf_pmu pmu;
40 struct perf_pmu_test_event const *aliases[10];
41 };
42
43 static const struct perf_pmu_test_event bp_l1_btb_correct = {
44 .event = {
45 .name = "bp_l1_btb_correct",
46 .event = "event=0x8a",
47 .desc = "L1 BTB Correction",
48 .topic = "branch",
49 },
50 .alias_str = "event=0x8a",
51 .alias_long_desc = "L1 BTB Correction",
52 };
53
54 static const struct perf_pmu_test_event bp_l2_btb_correct = {
55 .event = {
56 .name = "bp_l2_btb_correct",
57 .event = "event=0x8b",
58 .desc = "L2 BTB Correction",
59 .topic = "branch",
60 },
61 .alias_str = "event=0x8b",
62 .alias_long_desc = "L2 BTB Correction",
63 };
64
65 static const struct perf_pmu_test_event segment_reg_loads_any = {
66 .event = {
67 .name = "segment_reg_loads.any",
68 .event = "event=0x6,period=200000,umask=0x80",
69 .desc = "Number of segment register loads",
70 .topic = "other",
71 },
72 .alias_str = "event=0x6,period=0x30d40,umask=0x80",
73 .alias_long_desc = "Number of segment register loads",
74 };
75
76 static const struct perf_pmu_test_event dispatch_blocked_any = {
77 .event = {
78 .name = "dispatch_blocked.any",
79 .event = "event=0x9,period=200000,umask=0x20",
80 .desc = "Memory cluster signals to block micro-op dispatch for any reason",
81 .topic = "other",
82 },
83 .alias_str = "event=0x9,period=0x30d40,umask=0x20",
84 .alias_long_desc = "Memory cluster signals to block micro-op dispatch for any reason",
85 };
86
87 static const struct perf_pmu_test_event eist_trans = {
88 .event = {
89 .name = "eist_trans",
90 .event = "event=0x3a,period=200000,umask=0x0",
91 .desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
92 .topic = "other",
93 },
94 .alias_str = "event=0x3a,period=0x30d40,umask=0",
95 .alias_long_desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
96 };
97
98 static const struct perf_pmu_test_event l3_cache_rd = {
99 .event = {
100 .name = "l3_cache_rd",
101 .event = "event=0x40",
102 .desc = "L3 cache access, read",
103 .long_desc = "Attributable Level 3 cache access, read",
104 .topic = "cache",
105 },
106 .alias_str = "event=0x40",
107 .alias_long_desc = "Attributable Level 3 cache access, read",
108 };
109
110 static const struct perf_pmu_test_event *core_events[] = {
111 &bp_l1_btb_correct,
112 &bp_l2_btb_correct,
113 &segment_reg_loads_any,
114 &dispatch_blocked_any,
115 &eist_trans,
116 &l3_cache_rd,
117 NULL
118 };
119
120 static const struct perf_pmu_test_event uncore_hisi_ddrc_flux_wcmd = {
121 .event = {
122 .name = "uncore_hisi_ddrc.flux_wcmd",
123 .event = "event=0x2",
124 .desc = "DDRC write commands. Unit: hisi_sccl,ddrc ",
125 .topic = "uncore",
126 .long_desc = "DDRC write commands",
127 .pmu = "hisi_sccl,ddrc",
128 },
129 .alias_str = "event=0x2",
130 .alias_long_desc = "DDRC write commands",
131 .matching_pmu = "hisi_sccl1_ddrc2",
132 };
133
134 static const struct perf_pmu_test_event unc_cbo_xsnp_response_miss_eviction = {
135 .event = {
136 .name = "unc_cbo_xsnp_response.miss_eviction",
137 .event = "event=0x22,umask=0x81",
138 .desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core. Unit: uncore_cbox ",
139 .topic = "uncore",
140 .long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
141 .pmu = "uncore_cbox",
142 },
143 .alias_str = "event=0x22,umask=0x81",
144 .alias_long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
145 .matching_pmu = "uncore_cbox_0",
146 };
147
148 static const struct perf_pmu_test_event uncore_hyphen = {
149 .event = {
150 .name = "event-hyphen",
151 .event = "event=0xe0,umask=0x00",
152 .desc = "UNC_CBO_HYPHEN. Unit: uncore_cbox ",
153 .topic = "uncore",
154 .long_desc = "UNC_CBO_HYPHEN",
155 .pmu = "uncore_cbox",
156 },
157 .alias_str = "event=0xe0,umask=0",
158 .alias_long_desc = "UNC_CBO_HYPHEN",
159 .matching_pmu = "uncore_cbox_0",
160 };
161
162 static const struct perf_pmu_test_event uncore_two_hyph = {
163 .event = {
164 .name = "event-two-hyph",
165 .event = "event=0xc0,umask=0x00",
166 .desc = "UNC_CBO_TWO_HYPH. Unit: uncore_cbox ",
167 .topic = "uncore",
168 .long_desc = "UNC_CBO_TWO_HYPH",
169 .pmu = "uncore_cbox",
170 },
171 .alias_str = "event=0xc0,umask=0",
172 .alias_long_desc = "UNC_CBO_TWO_HYPH",
173 .matching_pmu = "uncore_cbox_0",
174 };
175
176 static const struct perf_pmu_test_event uncore_hisi_l3c_rd_hit_cpipe = {
177 .event = {
178 .name = "uncore_hisi_l3c.rd_hit_cpipe",
179 .event = "event=0x7",
180 .desc = "Total read hits. Unit: hisi_sccl,l3c ",
181 .topic = "uncore",
182 .long_desc = "Total read hits",
183 .pmu = "hisi_sccl,l3c",
184 },
185 .alias_str = "event=0x7",
186 .alias_long_desc = "Total read hits",
187 .matching_pmu = "hisi_sccl3_l3c7",
188 };
189
190 static const struct perf_pmu_test_event uncore_imc_free_running_cache_miss = {
191 .event = {
192 .name = "uncore_imc_free_running.cache_miss",
193 .event = "event=0x12",
194 .desc = "Total cache misses. Unit: uncore_imc_free_running ",
195 .topic = "uncore",
196 .long_desc = "Total cache misses",
197 .pmu = "uncore_imc_free_running",
198 },
199 .alias_str = "event=0x12",
200 .alias_long_desc = "Total cache misses",
201 .matching_pmu = "uncore_imc_free_running_0",
202 };
203
204 static const struct perf_pmu_test_event uncore_imc_cache_hits = {
205 .event = {
206 .name = "uncore_imc.cache_hits",
207 .event = "event=0x34",
208 .desc = "Total cache hits. Unit: uncore_imc ",
209 .topic = "uncore",
210 .long_desc = "Total cache hits",
211 .pmu = "uncore_imc",
212 },
213 .alias_str = "event=0x34",
214 .alias_long_desc = "Total cache hits",
215 .matching_pmu = "uncore_imc_0",
216 };
217
218 static const struct perf_pmu_test_event *uncore_events[] = {
219 &uncore_hisi_ddrc_flux_wcmd,
220 &unc_cbo_xsnp_response_miss_eviction,
221 &uncore_hyphen,
222 &uncore_two_hyph,
223 &uncore_hisi_l3c_rd_hit_cpipe,
224 &uncore_imc_free_running_cache_miss,
225 &uncore_imc_cache_hits,
226 NULL
227 };
228
229 static const struct perf_pmu_test_event sys_ddr_pmu_write_cycles = {
230 .event = {
231 .name = "sys_ddr_pmu.write_cycles",
232 .event = "event=0x2b",
233 .desc = "ddr write-cycles event. Unit: uncore_sys_ddr_pmu ",
234 .topic = "uncore",
235 .pmu = "uncore_sys_ddr_pmu",
236 .compat = "v8",
237 },
238 .alias_str = "event=0x2b",
239 .alias_long_desc = "ddr write-cycles event. Unit: uncore_sys_ddr_pmu ",
240 .matching_pmu = "uncore_sys_ddr_pmu",
241 };
242
243 static const struct perf_pmu_test_event sys_ccn_pmu_read_cycles = {
244 .event = {
245 .name = "sys_ccn_pmu.read_cycles",
246 .event = "config=0x2c",
247 .desc = "ccn read-cycles event. Unit: uncore_sys_ccn_pmu ",
248 .topic = "uncore",
249 .pmu = "uncore_sys_ccn_pmu",
250 .compat = "0x01",
251 },
252 .alias_str = "config=0x2c",
253 .alias_long_desc = "ccn read-cycles event. Unit: uncore_sys_ccn_pmu ",
254 .matching_pmu = "uncore_sys_ccn_pmu",
255 };
256
257 static const struct perf_pmu_test_event *sys_events[] = {
258 &sys_ddr_pmu_write_cycles,
259 &sys_ccn_pmu_read_cycles,
260 NULL
261 };
262
is_same(const char * reference,const char * test)263 static bool is_same(const char *reference, const char *test)
264 {
265 if (!reference && !test)
266 return true;
267
268 if (reference && !test)
269 return false;
270
271 if (!reference && test)
272 return false;
273
274 return !strcmp(reference, test);
275 }
276
compare_pmu_events(const struct pmu_event * e1,const struct pmu_event * e2)277 static int compare_pmu_events(const struct pmu_event *e1, const struct pmu_event *e2)
278 {
279 if (!is_same(e1->name, e2->name)) {
280 pr_debug2("testing event e1 %s: mismatched name string, %s vs %s\n",
281 e1->name, e1->name, e2->name);
282 return -1;
283 }
284
285 if (!is_same(e1->compat, e2->compat)) {
286 pr_debug2("testing event e1 %s: mismatched compat string, %s vs %s\n",
287 e1->name, e1->compat, e2->compat);
288 return -1;
289 }
290
291 if (!is_same(e1->event, e2->event)) {
292 pr_debug2("testing event e1 %s: mismatched event, %s vs %s\n",
293 e1->name, e1->event, e2->event);
294 return -1;
295 }
296
297 if (!is_same(e1->desc, e2->desc)) {
298 pr_debug2("testing event e1 %s: mismatched desc, %s vs %s\n",
299 e1->name, e1->desc, e2->desc);
300 return -1;
301 }
302
303 if (!is_same(e1->topic, e2->topic)) {
304 pr_debug2("testing event e1 %s: mismatched topic, %s vs %s\n",
305 e1->name, e1->topic, e2->topic);
306 return -1;
307 }
308
309 if (!is_same(e1->long_desc, e2->long_desc)) {
310 pr_debug2("testing event e1 %s: mismatched long_desc, %s vs %s\n",
311 e1->name, e1->long_desc, e2->long_desc);
312 return -1;
313 }
314
315 if (!is_same(e1->pmu, e2->pmu)) {
316 pr_debug2("testing event e1 %s: mismatched pmu string, %s vs %s\n",
317 e1->name, e1->pmu, e2->pmu);
318 return -1;
319 }
320
321 if (!is_same(e1->unit, e2->unit)) {
322 pr_debug2("testing event e1 %s: mismatched unit, %s vs %s\n",
323 e1->name, e1->unit, e2->unit);
324 return -1;
325 }
326
327 if (!is_same(e1->perpkg, e2->perpkg)) {
328 pr_debug2("testing event e1 %s: mismatched perpkg, %s vs %s\n",
329 e1->name, e1->perpkg, e2->perpkg);
330 return -1;
331 }
332
333 if (!is_same(e1->aggr_mode, e2->aggr_mode)) {
334 pr_debug2("testing event e1 %s: mismatched aggr_mode, %s vs %s\n",
335 e1->name, e1->aggr_mode, e2->aggr_mode);
336 return -1;
337 }
338
339 if (!is_same(e1->metric_expr, e2->metric_expr)) {
340 pr_debug2("testing event e1 %s: mismatched metric_expr, %s vs %s\n",
341 e1->name, e1->metric_expr, e2->metric_expr);
342 return -1;
343 }
344
345 if (!is_same(e1->metric_name, e2->metric_name)) {
346 pr_debug2("testing event e1 %s: mismatched metric_name, %s vs %s\n",
347 e1->name, e1->metric_name, e2->metric_name);
348 return -1;
349 }
350
351 if (!is_same(e1->metric_group, e2->metric_group)) {
352 pr_debug2("testing event e1 %s: mismatched metric_group, %s vs %s\n",
353 e1->name, e1->metric_group, e2->metric_group);
354 return -1;
355 }
356
357 if (!is_same(e1->deprecated, e2->deprecated)) {
358 pr_debug2("testing event e1 %s: mismatched deprecated, %s vs %s\n",
359 e1->name, e1->deprecated, e2->deprecated);
360 return -1;
361 }
362
363 if (!is_same(e1->metric_constraint, e2->metric_constraint)) {
364 pr_debug2("testing event e1 %s: mismatched metric_constant, %s vs %s\n",
365 e1->name, e1->metric_constraint, e2->metric_constraint);
366 return -1;
367 }
368
369 return 0;
370 }
371
compare_alias_to_test_event(struct perf_pmu_alias * alias,struct perf_pmu_test_event const * test_event,char const * pmu_name)372 static int compare_alias_to_test_event(struct perf_pmu_alias *alias,
373 struct perf_pmu_test_event const *test_event,
374 char const *pmu_name)
375 {
376 struct pmu_event const *event = &test_event->event;
377
378 /* An alias was found, ensure everything is in order */
379 if (!is_same(alias->name, event->name)) {
380 pr_debug("testing aliases PMU %s: mismatched name, %s vs %s\n",
381 pmu_name, alias->name, event->name);
382 return -1;
383 }
384
385 if (!is_same(alias->desc, event->desc)) {
386 pr_debug("testing aliases PMU %s: mismatched desc, %s vs %s\n",
387 pmu_name, alias->desc, event->desc);
388 return -1;
389 }
390
391 if (!is_same(alias->long_desc, test_event->alias_long_desc)) {
392 pr_debug("testing aliases PMU %s: mismatched long_desc, %s vs %s\n",
393 pmu_name, alias->long_desc,
394 test_event->alias_long_desc);
395 return -1;
396 }
397
398 if (!is_same(alias->topic, event->topic)) {
399 pr_debug("testing aliases PMU %s: mismatched topic, %s vs %s\n",
400 pmu_name, alias->topic, event->topic);
401 return -1;
402 }
403
404 if (!is_same(alias->str, test_event->alias_str)) {
405 pr_debug("testing aliases PMU %s: mismatched str, %s vs %s\n",
406 pmu_name, alias->str, test_event->alias_str);
407 return -1;
408 }
409
410 if (!is_same(alias->long_desc, test_event->alias_long_desc)) {
411 pr_debug("testing aliases PMU %s: mismatched long desc, %s vs %s\n",
412 pmu_name, alias->str, test_event->alias_long_desc);
413 return -1;
414 }
415
416
417 if (!is_same(alias->pmu_name, test_event->event.pmu)) {
418 pr_debug("testing aliases PMU %s: mismatched pmu_name, %s vs %s\n",
419 pmu_name, alias->pmu_name, test_event->event.pmu);
420 return -1;
421 }
422
423 return 0;
424 }
425
test__pmu_event_table_core_callback(const struct pmu_event * pe,const struct pmu_events_table * table __maybe_unused,void * data)426 static int test__pmu_event_table_core_callback(const struct pmu_event *pe,
427 const struct pmu_events_table *table __maybe_unused,
428 void *data)
429 {
430 int *map_events = data;
431 struct perf_pmu_test_event const **test_event_table;
432 bool found = false;
433
434 if (!pe->name)
435 return 0;
436
437 if (pe->pmu)
438 test_event_table = &uncore_events[0];
439 else
440 test_event_table = &core_events[0];
441
442 for (; *test_event_table; test_event_table++) {
443 struct perf_pmu_test_event const *test_event = *test_event_table;
444 struct pmu_event const *event = &test_event->event;
445
446 if (strcmp(pe->name, event->name))
447 continue;
448 found = true;
449 (*map_events)++;
450
451 if (compare_pmu_events(pe, event))
452 return -1;
453
454 pr_debug("testing event table %s: pass\n", pe->name);
455 }
456 if (!found) {
457 pr_err("testing event table: could not find event %s\n", pe->name);
458 return -1;
459 }
460 return 0;
461 }
462
test__pmu_event_table_sys_callback(const struct pmu_event * pe,const struct pmu_events_table * table __maybe_unused,void * data)463 static int test__pmu_event_table_sys_callback(const struct pmu_event *pe,
464 const struct pmu_events_table *table __maybe_unused,
465 void *data)
466 {
467 int *map_events = data;
468 struct perf_pmu_test_event const **test_event_table;
469 bool found = false;
470
471 test_event_table = &sys_events[0];
472
473 for (; *test_event_table; test_event_table++) {
474 struct perf_pmu_test_event const *test_event = *test_event_table;
475 struct pmu_event const *event = &test_event->event;
476
477 if (strcmp(pe->name, event->name))
478 continue;
479 found = true;
480 (*map_events)++;
481
482 if (compare_pmu_events(pe, event))
483 return TEST_FAIL;
484
485 pr_debug("testing sys event table %s: pass\n", pe->name);
486 }
487 if (!found) {
488 pr_debug("testing sys event table: could not find event %s\n", pe->name);
489 return TEST_FAIL;
490 }
491 return TEST_OK;
492 }
493
494 /* Verify generated events from pmu-events.c are as expected */
test__pmu_event_table(struct test_suite * test __maybe_unused,int subtest __maybe_unused)495 static int test__pmu_event_table(struct test_suite *test __maybe_unused,
496 int subtest __maybe_unused)
497 {
498 const struct pmu_events_table *sys_event_table = find_sys_events_table("pme_test_soc_sys");
499 const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu");
500 int map_events = 0, expected_events, err;
501
502 /* ignore 3x sentinels */
503 expected_events = ARRAY_SIZE(core_events) +
504 ARRAY_SIZE(uncore_events) +
505 ARRAY_SIZE(sys_events) - 3;
506
507 if (!table || !sys_event_table)
508 return -1;
509
510 err = pmu_events_table_for_each_event(table, test__pmu_event_table_core_callback,
511 &map_events);
512 if (err)
513 return err;
514
515 err = pmu_events_table_for_each_event(sys_event_table, test__pmu_event_table_sys_callback,
516 &map_events);
517 if (err)
518 return err;
519
520 if (map_events != expected_events) {
521 pr_err("testing event table: found %d, but expected %d\n",
522 map_events, expected_events);
523 return TEST_FAIL;
524 }
525
526 return 0;
527 }
528
find_alias(const char * test_event,struct list_head * aliases)529 static struct perf_pmu_alias *find_alias(const char *test_event, struct list_head *aliases)
530 {
531 struct perf_pmu_alias *alias;
532
533 list_for_each_entry(alias, aliases, list)
534 if (!strcmp(test_event, alias->name))
535 return alias;
536
537 return NULL;
538 }
539
540 /* Verify aliases are as expected */
__test_core_pmu_event_aliases(char * pmu_name,int * count)541 static int __test_core_pmu_event_aliases(char *pmu_name, int *count)
542 {
543 struct perf_pmu_test_event const **test_event_table;
544 struct perf_pmu *pmu;
545 LIST_HEAD(aliases);
546 int res = 0;
547 const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu");
548 struct perf_pmu_alias *a, *tmp;
549
550 if (!table)
551 return -1;
552
553 test_event_table = &core_events[0];
554
555 pmu = zalloc(sizeof(*pmu));
556 if (!pmu)
557 return -1;
558
559 pmu->name = pmu_name;
560
561 pmu_add_cpu_aliases_table(&aliases, pmu, table);
562
563 for (; *test_event_table; test_event_table++) {
564 struct perf_pmu_test_event const *test_event = *test_event_table;
565 struct pmu_event const *event = &test_event->event;
566 struct perf_pmu_alias *alias = find_alias(event->name, &aliases);
567
568 if (!alias) {
569 pr_debug("testing aliases core PMU %s: no alias, alias_table->name=%s\n",
570 pmu_name, event->name);
571 res = -1;
572 break;
573 }
574
575 if (compare_alias_to_test_event(alias, test_event, pmu_name)) {
576 res = -1;
577 break;
578 }
579
580 (*count)++;
581 pr_debug2("testing aliases core PMU %s: matched event %s\n",
582 pmu_name, alias->name);
583 }
584
585 list_for_each_entry_safe(a, tmp, &aliases, list) {
586 list_del(&a->list);
587 perf_pmu_free_alias(a);
588 }
589 free(pmu);
590 return res;
591 }
592
__test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu * test_pmu)593 static 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 struct perf_pmu_alias *a, *tmp, *alias;
600 const struct pmu_events_table *events_table;
601 LIST_HEAD(aliases);
602 int res = 0;
603
604 events_table = find_core_events_table("testarch", "testcpu");
605 if (!events_table)
606 return -1;
607 pmu_add_cpu_aliases_table(&aliases, pmu, events_table);
608 pmu_add_sys_aliases(&aliases, pmu);
609
610 /* Count how many aliases we generated */
611 list_for_each_entry(alias, &aliases, list)
612 alias_count++;
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 res = -1;
622 goto out;
623 }
624
625 list_for_each_entry(alias, &aliases, list) {
626 bool matched = false;
627
628 for (table = &test_pmu->aliases[0]; *table; table++) {
629 struct perf_pmu_test_event const *test_event = *table;
630 struct pmu_event const *event = &test_event->event;
631
632 if (!strcmp(event->name, alias->name)) {
633 if (compare_alias_to_test_event(alias,
634 test_event,
635 pmu_name)) {
636 continue;
637 }
638 matched = true;
639 matched_count++;
640 }
641 }
642
643 if (matched == false) {
644 pr_debug("testing aliases uncore PMU %s: could not match alias %s\n",
645 pmu_name, alias->name);
646 res = -1;
647 goto out;
648 }
649 }
650
651 if (alias_count != matched_count) {
652 pr_debug("testing aliases uncore PMU %s: mismatch found aliases (%d) vs matched (%d)\n",
653 pmu_name, matched_count, alias_count);
654 res = -1;
655 }
656
657 out:
658 list_for_each_entry_safe(a, tmp, &aliases, list) {
659 list_del(&a->list);
660 perf_pmu_free_alias(a);
661 }
662 return res;
663 }
664
665 static struct perf_pmu_test_pmu test_pmus[] = {
666 {
667 .pmu = {
668 .name = (char *)"hisi_sccl1_ddrc2",
669 .is_uncore = 1,
670 },
671 .aliases = {
672 &uncore_hisi_ddrc_flux_wcmd,
673 },
674 },
675 {
676 .pmu = {
677 .name = (char *)"uncore_cbox_0",
678 .is_uncore = 1,
679 },
680 .aliases = {
681 &unc_cbo_xsnp_response_miss_eviction,
682 &uncore_hyphen,
683 &uncore_two_hyph,
684 },
685 },
686 {
687 .pmu = {
688 .name = (char *)"hisi_sccl3_l3c7",
689 .is_uncore = 1,
690 },
691 .aliases = {
692 &uncore_hisi_l3c_rd_hit_cpipe,
693 },
694 },
695 {
696 .pmu = {
697 .name = (char *)"uncore_imc_free_running_0",
698 .is_uncore = 1,
699 },
700 .aliases = {
701 &uncore_imc_free_running_cache_miss,
702 },
703 },
704 {
705 .pmu = {
706 .name = (char *)"uncore_imc_0",
707 .is_uncore = 1,
708 },
709 .aliases = {
710 &uncore_imc_cache_hits,
711 },
712 },
713 {
714 .pmu = {
715 .name = (char *)"uncore_sys_ddr_pmu0",
716 .is_uncore = 1,
717 .id = (char *)"v8",
718 },
719 .aliases = {
720 &sys_ddr_pmu_write_cycles,
721 },
722 },
723 {
724 .pmu = {
725 .name = (char *)"uncore_sys_ccn_pmu4",
726 .is_uncore = 1,
727 .id = (char *)"0x01",
728 },
729 .aliases = {
730 &sys_ccn_pmu_read_cycles,
731 },
732 },
733 };
734
735 /* Test that aliases generated are as expected */
test__aliases(struct test_suite * test __maybe_unused,int subtest __maybe_unused)736 static int test__aliases(struct test_suite *test __maybe_unused,
737 int subtest __maybe_unused)
738 {
739 struct perf_pmu *pmu = NULL;
740 unsigned long i;
741
742 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
743 int count = 0;
744
745 if (!is_pmu_core(pmu->name))
746 continue;
747
748 if (list_empty(&pmu->format)) {
749 pr_debug2("skipping testing core PMU %s\n", pmu->name);
750 continue;
751 }
752
753 if (__test_core_pmu_event_aliases(pmu->name, &count)) {
754 pr_debug("testing core PMU %s aliases: failed\n", pmu->name);
755 return -1;
756 }
757
758 if (count == 0) {
759 pr_debug("testing core PMU %s aliases: no events to match\n",
760 pmu->name);
761 return -1;
762 }
763
764 pr_debug("testing core PMU %s aliases: pass\n", pmu->name);
765 }
766
767 for (i = 0; i < ARRAY_SIZE(test_pmus); i++) {
768 int res = __test_uncore_pmu_event_aliases(&test_pmus[i]);
769
770 if (res)
771 return res;
772 }
773
774 return 0;
775 }
776
is_number(const char * str)777 static bool is_number(const char *str)
778 {
779 char *end_ptr;
780 double v;
781
782 errno = 0;
783 v = strtod(str, &end_ptr);
784 (void)v; // We're not interested in this value, only if it is valid
785 return errno == 0 && end_ptr != str;
786 }
787
check_parse_id(const char * id,struct parse_events_error * error,struct perf_pmu * fake_pmu)788 static int check_parse_id(const char *id, struct parse_events_error *error,
789 struct perf_pmu *fake_pmu)
790 {
791 struct evlist *evlist;
792 int ret;
793 char *dup, *cur;
794
795 /* Numbers are always valid. */
796 if (is_number(id))
797 return 0;
798
799 evlist = evlist__new();
800 if (!evlist)
801 return -ENOMEM;
802
803 dup = strdup(id);
804 if (!dup)
805 return -ENOMEM;
806
807 for (cur = strchr(dup, '@') ; cur; cur = strchr(++cur, '@'))
808 *cur = '/';
809
810 if (fake_pmu) {
811 /*
812 * Every call to __parse_events will try to initialize the PMU
813 * state from sysfs and then clean it up at the end. Reset the
814 * PMU events to the test state so that we don't pick up
815 * erroneous prefixes and suffixes.
816 */
817 perf_pmu__test_parse_init();
818 }
819 ret = __parse_events(evlist, dup, error, fake_pmu);
820 free(dup);
821
822 evlist__delete(evlist);
823 return ret;
824 }
825
check_parse_fake(const char * id)826 static int check_parse_fake(const char *id)
827 {
828 struct parse_events_error error;
829 int ret;
830
831 parse_events_error__init(&error);
832 ret = check_parse_id(id, &error, &perf_pmu__fake);
833 parse_events_error__exit(&error);
834 return ret;
835 }
836
837 struct metric {
838 struct list_head list;
839 struct metric_ref metric_ref;
840 };
841
test__parsing_callback(const struct pmu_event * pe,const struct pmu_events_table * table,void * data)842 static int test__parsing_callback(const struct pmu_event *pe, const struct pmu_events_table *table,
843 void *data)
844 {
845 int *failures = data;
846 int k;
847 struct evlist *evlist;
848 struct perf_cpu_map *cpus;
849 struct runtime_stat st;
850 struct evsel *evsel;
851 struct rblist metric_events = {
852 .nr_entries = 0,
853 };
854 int err = 0;
855
856 if (!pe->metric_expr)
857 return 0;
858
859 pr_debug("Found metric '%s'\n", pe->metric_name);
860 (*failures)++;
861
862 /*
863 * We need to prepare evlist for stat mode running on CPU 0
864 * because that's where all the stats are going to be created.
865 */
866 evlist = evlist__new();
867 if (!evlist)
868 return -ENOMEM;
869
870 cpus = perf_cpu_map__new("0");
871 if (!cpus) {
872 evlist__delete(evlist);
873 return -ENOMEM;
874 }
875
876 perf_evlist__set_maps(&evlist->core, cpus, NULL);
877 runtime_stat__init(&st);
878
879 err = metricgroup__parse_groups_test(evlist, table, pe->metric_name,
880 false, false,
881 &metric_events);
882 if (err) {
883 if (!strcmp(pe->metric_name, "M1") || !strcmp(pe->metric_name, "M2") ||
884 !strcmp(pe->metric_name, "M3")) {
885 (*failures)--;
886 pr_debug("Expected broken metric %s skipping\n", pe->metric_name);
887 err = 0;
888 }
889 goto out_err;
890 }
891
892 err = evlist__alloc_stats(evlist, false);
893 if (err)
894 goto out_err;
895 /*
896 * Add all ids with a made up value. The value may trigger divide by
897 * zero when subtracted and so try to make them unique.
898 */
899 k = 1;
900 perf_stat__reset_shadow_stats();
901 evlist__for_each_entry(evlist, evsel) {
902 perf_stat__update_shadow_stats(evsel, k, 0, &st);
903 if (!strcmp(evsel->name, "duration_time"))
904 update_stats(&walltime_nsecs_stats, k);
905 k++;
906 }
907 evlist__for_each_entry(evlist, evsel) {
908 struct metric_event *me = metricgroup__lookup(&metric_events, evsel, false);
909
910 if (me != NULL) {
911 struct metric_expr *mexp;
912
913 list_for_each_entry (mexp, &me->head, nd) {
914 if (strcmp(mexp->metric_name, pe->metric_name))
915 continue;
916 pr_debug("Result %f\n", test_generic_metric(mexp, 0, &st));
917 err = 0;
918 (*failures)--;
919 goto out_err;
920 }
921 }
922 }
923 pr_debug("Didn't find parsed metric %s", pe->metric_name);
924 err = 1;
925 out_err:
926 if (err)
927 pr_debug("Broken metric %s\n", pe->metric_name);
928
929 /* ... cleanup. */
930 metricgroup__rblist_exit(&metric_events);
931 runtime_stat__exit(&st);
932 evlist__free_stats(evlist);
933 perf_cpu_map__put(cpus);
934 evlist__delete(evlist);
935 return err;
936 }
937
test__parsing(struct test_suite * test __maybe_unused,int subtest __maybe_unused)938 static int test__parsing(struct test_suite *test __maybe_unused,
939 int subtest __maybe_unused)
940 {
941 int failures = 0;
942
943 pmu_for_each_core_event(test__parsing_callback, &failures);
944 pmu_for_each_sys_event(test__parsing_callback, &failures);
945
946 return failures == 0 ? TEST_OK : TEST_FAIL;
947 }
948
949 struct test_metric {
950 const char *str;
951 };
952
953 static struct test_metric metrics[] = {
954 { "(unc_p_power_state_occupancy.cores_c0 / unc_p_clockticks) * 100." },
955 { "imx8_ddr0@read\\-cycles@ * 4 * 4", },
956 { "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@ * 4", },
957 { "(cstate_pkg@c2\\-residency@ / msr@tsc@) * 100", },
958 { "(imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@)", },
959 };
960
metric_parse_fake(const char * str)961 static int metric_parse_fake(const char *str)
962 {
963 struct expr_parse_ctx *ctx;
964 struct hashmap_entry *cur;
965 double result;
966 int ret = -1;
967 size_t bkt;
968 int i;
969
970 pr_debug("parsing '%s'\n", str);
971
972 ctx = expr__ctx_new();
973 if (!ctx) {
974 pr_debug("expr__ctx_new failed");
975 return TEST_FAIL;
976 }
977 if (expr__find_ids(str, NULL, ctx) < 0) {
978 pr_err("expr__find_ids failed\n");
979 return -1;
980 }
981
982 /*
983 * Add all ids with a made up value. The value may
984 * trigger divide by zero when subtracted and so try to
985 * make them unique.
986 */
987 i = 1;
988 hashmap__for_each_entry(ctx->ids, cur, bkt)
989 expr__add_id_val(ctx, strdup(cur->key), i++);
990
991 hashmap__for_each_entry(ctx->ids, cur, bkt) {
992 if (check_parse_fake(cur->key)) {
993 pr_err("check_parse_fake failed\n");
994 goto out;
995 }
996 }
997
998 ret = 0;
999 if (expr__parse(&result, ctx, str)) {
1000 /*
1001 * Parsing failed, make numbers go from large to small which can
1002 * resolve divide by zero issues.
1003 */
1004 i = 1024;
1005 hashmap__for_each_entry(ctx->ids, cur, bkt)
1006 expr__add_id_val(ctx, strdup(cur->key), i--);
1007 if (expr__parse(&result, ctx, str)) {
1008 pr_err("expr__parse failed\n");
1009 ret = -1;
1010 }
1011 }
1012
1013 out:
1014 expr__ctx_free(ctx);
1015 return ret;
1016 }
1017
test__parsing_fake_callback(const struct pmu_event * pe,const struct pmu_events_table * table __maybe_unused,void * data __maybe_unused)1018 static int test__parsing_fake_callback(const struct pmu_event *pe,
1019 const struct pmu_events_table *table __maybe_unused,
1020 void *data __maybe_unused)
1021 {
1022 if (!pe->metric_expr)
1023 return 0;
1024
1025 return metric_parse_fake(pe->metric_expr);
1026 }
1027
1028 /*
1029 * Parse all the metrics for current architecture,
1030 * or all defined cpus via the 'fake_pmu'
1031 * in parse_events.
1032 */
test__parsing_fake(struct test_suite * test __maybe_unused,int subtest __maybe_unused)1033 static int test__parsing_fake(struct test_suite *test __maybe_unused,
1034 int subtest __maybe_unused)
1035 {
1036 int err = 0;
1037
1038 for (size_t i = 0; i < ARRAY_SIZE(metrics); i++) {
1039 err = metric_parse_fake(metrics[i].str);
1040 if (err)
1041 return err;
1042 }
1043
1044 err = pmu_for_each_core_event(test__parsing_fake_callback, NULL);
1045 if (err)
1046 return err;
1047
1048 return pmu_for_each_sys_event(test__parsing_fake_callback, NULL);
1049 }
1050
1051 static struct test_case pmu_events_tests[] = {
1052 TEST_CASE("PMU event table sanity", pmu_event_table),
1053 TEST_CASE("PMU event map aliases", aliases),
1054 TEST_CASE_REASON("Parsing of PMU event table metrics", parsing,
1055 "some metrics failed"),
1056 TEST_CASE("Parsing of PMU event table metrics with fake PMUs", parsing_fake),
1057 { .name = NULL, }
1058 };
1059
1060 struct test_suite suite__pmu_events = {
1061 .desc = "PMU events",
1062 .test_cases = pmu_events_tests,
1063 };
1064