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1// SPDX-License-Identifier: GPL-2.0
2#include <stdio.h>
3#include "evsel.h"
4#include "stat.h"
5#include "color.h"
6#include "pmu.h"
7#include "rblist.h"
8#include "evlist.h"
9#include "expr.h"
10#include "metricgroup.h"
11
12/*
13 * AGGR_GLOBAL: Use CPU 0
14 * AGGR_SOCKET: Use first CPU of socket
15 * AGGR_CORE: Use first CPU of core
16 * AGGR_NONE: Use matching CPU
17 * AGGR_THREAD: Not supported?
18 */
19static bool have_frontend_stalled;
20
21struct runtime_stat rt_stat;
22struct stats walltime_nsecs_stats;
23
24struct saved_value {
25 struct rb_node rb_node;
26 struct perf_evsel *evsel;
27 enum stat_type type;
28 int ctx;
29 int cpu;
30 struct runtime_stat *stat;
31 struct stats stats;
32};
33
34static int saved_value_cmp(struct rb_node *rb_node, const void *entry)
35{
36 struct saved_value *a = container_of(rb_node,
37 struct saved_value,
38 rb_node);
39 const struct saved_value *b = entry;
40
41 if (a->cpu != b->cpu)
42 return a->cpu - b->cpu;
43
44 /*
45 * Previously the rbtree was used to link generic metrics.
46 * The keys were evsel/cpu. Now the rbtree is extended to support
47 * per-thread shadow stats. For shadow stats case, the keys
48 * are cpu/type/ctx/stat (evsel is NULL). For generic metrics
49 * case, the keys are still evsel/cpu (type/ctx/stat are 0 or NULL).
50 */
51 if (a->type != b->type)
52 return a->type - b->type;
53
54 if (a->ctx != b->ctx)
55 return a->ctx - b->ctx;
56
57 if (a->evsel == NULL && b->evsel == NULL) {
58 if (a->stat == b->stat)
59 return 0;
60
61 if ((char *)a->stat < (char *)b->stat)
62 return -1;
63
64 return 1;
65 }
66
67 if (a->evsel == b->evsel)
68 return 0;
69 if ((char *)a->evsel < (char *)b->evsel)
70 return -1;
71 return +1;
72}
73
74static struct rb_node *saved_value_new(struct rblist *rblist __maybe_unused,
75 const void *entry)
76{
77 struct saved_value *nd = malloc(sizeof(struct saved_value));
78
79 if (!nd)
80 return NULL;
81 memcpy(nd, entry, sizeof(struct saved_value));
82 return &nd->rb_node;
83}
84
85static void saved_value_delete(struct rblist *rblist __maybe_unused,
86 struct rb_node *rb_node)
87{
88 struct saved_value *v;
89
90 BUG_ON(!rb_node);
91 v = container_of(rb_node, struct saved_value, rb_node);
92 free(v);
93}
94
95static struct saved_value *saved_value_lookup(struct perf_evsel *evsel,
96 int cpu,
97 bool create,
98 enum stat_type type,
99 int ctx,
100 struct runtime_stat *st)
101{
102 struct rblist *rblist;
103 struct rb_node *nd;
104 struct saved_value dm = {
105 .cpu = cpu,
106 .evsel = evsel,
107 .type = type,
108 .ctx = ctx,
109 .stat = st,
110 };
111
112 rblist = &st->value_list;
113
114 nd = rblist__find(rblist, &dm);
115 if (nd)
116 return container_of(nd, struct saved_value, rb_node);
117 if (create) {
118 rblist__add_node(rblist, &dm);
119 nd = rblist__find(rblist, &dm);
120 if (nd)
121 return container_of(nd, struct saved_value, rb_node);
122 }
123 return NULL;
124}
125
126void runtime_stat__init(struct runtime_stat *st)
127{
128 struct rblist *rblist = &st->value_list;
129
130 rblist__init(rblist);
131 rblist->node_cmp = saved_value_cmp;
132 rblist->node_new = saved_value_new;
133 rblist->node_delete = saved_value_delete;
134}
135
136void runtime_stat__exit(struct runtime_stat *st)
137{
138 rblist__exit(&st->value_list);
139}
140
141void perf_stat__init_shadow_stats(void)
142{
143 have_frontend_stalled = pmu_have_event("cpu", "stalled-cycles-frontend");
144 runtime_stat__init(&rt_stat);
145}
146
147static int evsel_context(struct perf_evsel *evsel)
148{
149 int ctx = 0;
150
151 if (evsel->attr.exclude_kernel)
152 ctx |= CTX_BIT_KERNEL;
153 if (evsel->attr.exclude_user)
154 ctx |= CTX_BIT_USER;
155 if (evsel->attr.exclude_hv)
156 ctx |= CTX_BIT_HV;
157 if (evsel->attr.exclude_host)
158 ctx |= CTX_BIT_HOST;
159 if (evsel->attr.exclude_idle)
160 ctx |= CTX_BIT_IDLE;
161
162 return ctx;
163}
164
165static void reset_stat(struct runtime_stat *st)
166{
167 struct rblist *rblist;
168 struct rb_node *pos, *next;
169
170 rblist = &st->value_list;
171 next = rb_first(&rblist->entries);
172 while (next) {
173 pos = next;
174 next = rb_next(pos);
175 memset(&container_of(pos, struct saved_value, rb_node)->stats,
176 0,
177 sizeof(struct stats));
178 }
179}
180
181void perf_stat__reset_shadow_stats(void)
182{
183 reset_stat(&rt_stat);
184 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
185}
186
187void perf_stat__reset_shadow_per_stat(struct runtime_stat *st)
188{
189 reset_stat(st);
190}
191
192static void update_runtime_stat(struct runtime_stat *st,
193 enum stat_type type,
194 int ctx, int cpu, u64 count)
195{
196 struct saved_value *v = saved_value_lookup(NULL, cpu, true,
197 type, ctx, st);
198
199 if (v)
200 update_stats(&v->stats, count);
201}
202
203/*
204 * Update various tracking values we maintain to print
205 * more semantic information such as miss/hit ratios,
206 * instruction rates, etc:
207 */
208void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 count,
209 int cpu, struct runtime_stat *st)
210{
211 int ctx = evsel_context(counter);
212
213 count *= counter->scale;
214
215 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK) ||
216 perf_evsel__match(counter, SOFTWARE, SW_CPU_CLOCK))
217 update_runtime_stat(st, STAT_NSECS, 0, cpu, count);
218 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
219 update_runtime_stat(st, STAT_CYCLES, ctx, cpu, count);
220 else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
221 update_runtime_stat(st, STAT_CYCLES_IN_TX, ctx, cpu, count);
222 else if (perf_stat_evsel__is(counter, TRANSACTION_START))
223 update_runtime_stat(st, STAT_TRANSACTION, ctx, cpu, count);
224 else if (perf_stat_evsel__is(counter, ELISION_START))
225 update_runtime_stat(st, STAT_ELISION, ctx, cpu, count);
226 else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS))
227 update_runtime_stat(st, STAT_TOPDOWN_TOTAL_SLOTS,
228 ctx, cpu, count);
229 else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED))
230 update_runtime_stat(st, STAT_TOPDOWN_SLOTS_ISSUED,
231 ctx, cpu, count);
232 else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED))
233 update_runtime_stat(st, STAT_TOPDOWN_SLOTS_RETIRED,
234 ctx, cpu, count);
235 else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES))
236 update_runtime_stat(st, STAT_TOPDOWN_FETCH_BUBBLES,
237 ctx, cpu, count);
238 else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES))
239 update_runtime_stat(st, STAT_TOPDOWN_RECOVERY_BUBBLES,
240 ctx, cpu, count);
241 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
242 update_runtime_stat(st, STAT_STALLED_CYCLES_FRONT,
243 ctx, cpu, count);
244 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
245 update_runtime_stat(st, STAT_STALLED_CYCLES_BACK,
246 ctx, cpu, count);
247 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
248 update_runtime_stat(st, STAT_BRANCHES, ctx, cpu, count);
249 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
250 update_runtime_stat(st, STAT_CACHEREFS, ctx, cpu, count);
251 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
252 update_runtime_stat(st, STAT_L1_DCACHE, ctx, cpu, count);
253 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
254 update_runtime_stat(st, STAT_L1_ICACHE, ctx, cpu, count);
255 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
256 update_runtime_stat(st, STAT_LL_CACHE, ctx, cpu, count);
257 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
258 update_runtime_stat(st, STAT_DTLB_CACHE, ctx, cpu, count);
259 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
260 update_runtime_stat(st, STAT_ITLB_CACHE, ctx, cpu, count);
261 else if (perf_stat_evsel__is(counter, SMI_NUM))
262 update_runtime_stat(st, STAT_SMI_NUM, ctx, cpu, count);
263 else if (perf_stat_evsel__is(counter, APERF))
264 update_runtime_stat(st, STAT_APERF, ctx, cpu, count);
265
266 if (counter->collect_stat) {
267 struct saved_value *v = saved_value_lookup(counter, cpu, true,
268 STAT_NONE, 0, st);
269 update_stats(&v->stats, count);
270 }
271}
272
273/* used for get_ratio_color() */
274enum grc_type {
275 GRC_STALLED_CYCLES_FE,
276 GRC_STALLED_CYCLES_BE,
277 GRC_CACHE_MISSES,
278 GRC_MAX_NR
279};
280
281static const char *get_ratio_color(enum grc_type type, double ratio)
282{
283 static const double grc_table[GRC_MAX_NR][3] = {
284 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
285 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
286 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
287 };
288 const char *color = PERF_COLOR_NORMAL;
289
290 if (ratio > grc_table[type][0])
291 color = PERF_COLOR_RED;
292 else if (ratio > grc_table[type][1])
293 color = PERF_COLOR_MAGENTA;
294 else if (ratio > grc_table[type][2])
295 color = PERF_COLOR_YELLOW;
296
297 return color;
298}
299
300static struct perf_evsel *perf_stat__find_event(struct perf_evlist *evsel_list,
301 const char *name)
302{
303 struct perf_evsel *c2;
304
305 evlist__for_each_entry (evsel_list, c2) {
306 if (!strcasecmp(c2->name, name))
307 return c2;
308 }
309 return NULL;
310}
311
312/* Mark MetricExpr target events and link events using them to them. */
313void perf_stat__collect_metric_expr(struct perf_evlist *evsel_list)
314{
315 struct perf_evsel *counter, *leader, **metric_events, *oc;
316 bool found;
317 const char **metric_names;
318 int i;
319 int num_metric_names;
320
321 evlist__for_each_entry(evsel_list, counter) {
322 bool invalid = false;
323
324 leader = counter->leader;
325 if (!counter->metric_expr)
326 continue;
327 metric_events = counter->metric_events;
328 if (!metric_events) {
329 if (expr__find_other(counter->metric_expr, counter->name,
330 &metric_names, &num_metric_names) < 0)
331 continue;
332
333 metric_events = calloc(sizeof(struct perf_evsel *),
334 num_metric_names + 1);
335 if (!metric_events)
336 return;
337 counter->metric_events = metric_events;
338 }
339
340 for (i = 0; i < num_metric_names; i++) {
341 found = false;
342 if (leader) {
343 /* Search in group */
344 for_each_group_member (oc, leader) {
345 if (!strcasecmp(oc->name, metric_names[i])) {
346 found = true;
347 break;
348 }
349 }
350 }
351 if (!found) {
352 /* Search ignoring groups */
353 oc = perf_stat__find_event(evsel_list, metric_names[i]);
354 }
355 if (!oc) {
356 /* Deduping one is good enough to handle duplicated PMUs. */
357 static char *printed;
358
359 /*
360 * Adding events automatically would be difficult, because
361 * it would risk creating groups that are not schedulable.
362 * perf stat doesn't understand all the scheduling constraints
363 * of events. So we ask the user instead to add the missing
364 * events.
365 */
366 if (!printed || strcasecmp(printed, metric_names[i])) {
367 fprintf(stderr,
368 "Add %s event to groups to get metric expression for %s\n",
369 metric_names[i],
370 counter->name);
371 printed = strdup(metric_names[i]);
372 }
373 invalid = true;
374 continue;
375 }
376 metric_events[i] = oc;
377 oc->collect_stat = true;
378 }
379 metric_events[i] = NULL;
380 free(metric_names);
381 if (invalid) {
382 free(metric_events);
383 counter->metric_events = NULL;
384 counter->metric_expr = NULL;
385 }
386 }
387}
388
389static double runtime_stat_avg(struct runtime_stat *st,
390 enum stat_type type, int ctx, int cpu)
391{
392 struct saved_value *v;
393
394 v = saved_value_lookup(NULL, cpu, false, type, ctx, st);
395 if (!v)
396 return 0.0;
397
398 return avg_stats(&v->stats);
399}
400
401static double runtime_stat_n(struct runtime_stat *st,
402 enum stat_type type, int ctx, int cpu)
403{
404 struct saved_value *v;
405
406 v = saved_value_lookup(NULL, cpu, false, type, ctx, st);
407 if (!v)
408 return 0.0;
409
410 return v->stats.n;
411}
412
413static void print_stalled_cycles_frontend(int cpu,
414 struct perf_evsel *evsel, double avg,
415 struct perf_stat_output_ctx *out,
416 struct runtime_stat *st)
417{
418 double total, ratio = 0.0;
419 const char *color;
420 int ctx = evsel_context(evsel);
421
422 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
423
424 if (total)
425 ratio = avg / total * 100.0;
426
427 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
428
429 if (ratio)
430 out->print_metric(out->ctx, color, "%7.2f%%", "frontend cycles idle",
431 ratio);
432 else
433 out->print_metric(out->ctx, NULL, NULL, "frontend cycles idle", 0);
434}
435
436static void print_stalled_cycles_backend(int cpu,
437 struct perf_evsel *evsel, double avg,
438 struct perf_stat_output_ctx *out,
439 struct runtime_stat *st)
440{
441 double total, ratio = 0.0;
442 const char *color;
443 int ctx = evsel_context(evsel);
444
445 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
446
447 if (total)
448 ratio = avg / total * 100.0;
449
450 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
451
452 out->print_metric(out->ctx, color, "%7.2f%%", "backend cycles idle", ratio);
453}
454
455static void print_branch_misses(int cpu,
456 struct perf_evsel *evsel,
457 double avg,
458 struct perf_stat_output_ctx *out,
459 struct runtime_stat *st)
460{
461 double total, ratio = 0.0;
462 const char *color;
463 int ctx = evsel_context(evsel);
464
465 total = runtime_stat_avg(st, STAT_BRANCHES, ctx, cpu);
466
467 if (total)
468 ratio = avg / total * 100.0;
469
470 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
471
472 out->print_metric(out->ctx, color, "%7.2f%%", "of all branches", ratio);
473}
474
475static void print_l1_dcache_misses(int cpu,
476 struct perf_evsel *evsel,
477 double avg,
478 struct perf_stat_output_ctx *out,
479 struct runtime_stat *st)
480
481{
482 double total, ratio = 0.0;
483 const char *color;
484 int ctx = evsel_context(evsel);
485
486 total = runtime_stat_avg(st, STAT_L1_DCACHE, ctx, cpu);
487
488 if (total)
489 ratio = avg / total * 100.0;
490
491 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
492
493 out->print_metric(out->ctx, color, "%7.2f%%", "of all L1-dcache hits", ratio);
494}
495
496static void print_l1_icache_misses(int cpu,
497 struct perf_evsel *evsel,
498 double avg,
499 struct perf_stat_output_ctx *out,
500 struct runtime_stat *st)
501
502{
503 double total, ratio = 0.0;
504 const char *color;
505 int ctx = evsel_context(evsel);
506
507 total = runtime_stat_avg(st, STAT_L1_ICACHE, ctx, cpu);
508
509 if (total)
510 ratio = avg / total * 100.0;
511
512 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
513 out->print_metric(out->ctx, color, "%7.2f%%", "of all L1-icache hits", ratio);
514}
515
516static void print_dtlb_cache_misses(int cpu,
517 struct perf_evsel *evsel,
518 double avg,
519 struct perf_stat_output_ctx *out,
520 struct runtime_stat *st)
521{
522 double total, ratio = 0.0;
523 const char *color;
524 int ctx = evsel_context(evsel);
525
526 total = runtime_stat_avg(st, STAT_DTLB_CACHE, ctx, cpu);
527
528 if (total)
529 ratio = avg / total * 100.0;
530
531 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
532 out->print_metric(out->ctx, color, "%7.2f%%", "of all dTLB cache hits", ratio);
533}
534
535static void print_itlb_cache_misses(int cpu,
536 struct perf_evsel *evsel,
537 double avg,
538 struct perf_stat_output_ctx *out,
539 struct runtime_stat *st)
540{
541 double total, ratio = 0.0;
542 const char *color;
543 int ctx = evsel_context(evsel);
544
545 total = runtime_stat_avg(st, STAT_ITLB_CACHE, ctx, cpu);
546
547 if (total)
548 ratio = avg / total * 100.0;
549
550 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
551 out->print_metric(out->ctx, color, "%7.2f%%", "of all iTLB cache hits", ratio);
552}
553
554static void print_ll_cache_misses(int cpu,
555 struct perf_evsel *evsel,
556 double avg,
557 struct perf_stat_output_ctx *out,
558 struct runtime_stat *st)
559{
560 double total, ratio = 0.0;
561 const char *color;
562 int ctx = evsel_context(evsel);
563
564 total = runtime_stat_avg(st, STAT_LL_CACHE, ctx, cpu);
565
566 if (total)
567 ratio = avg / total * 100.0;
568
569 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
570 out->print_metric(out->ctx, color, "%7.2f%%", "of all LL-cache hits", ratio);
571}
572
573/*
574 * High level "TopDown" CPU core pipe line bottleneck break down.
575 *
576 * Basic concept following
577 * Yasin, A Top Down Method for Performance analysis and Counter architecture
578 * ISPASS14
579 *
580 * The CPU pipeline is divided into 4 areas that can be bottlenecks:
581 *
582 * Frontend -> Backend -> Retiring
583 * BadSpeculation in addition means out of order execution that is thrown away
584 * (for example branch mispredictions)
585 * Frontend is instruction decoding.
586 * Backend is execution, like computation and accessing data in memory
587 * Retiring is good execution that is not directly bottlenecked
588 *
589 * The formulas are computed in slots.
590 * A slot is an entry in the pipeline each for the pipeline width
591 * (for example a 4-wide pipeline has 4 slots for each cycle)
592 *
593 * Formulas:
594 * BadSpeculation = ((SlotsIssued - SlotsRetired) + RecoveryBubbles) /
595 * TotalSlots
596 * Retiring = SlotsRetired / TotalSlots
597 * FrontendBound = FetchBubbles / TotalSlots
598 * BackendBound = 1.0 - BadSpeculation - Retiring - FrontendBound
599 *
600 * The kernel provides the mapping to the low level CPU events and any scaling
601 * needed for the CPU pipeline width, for example:
602 *
603 * TotalSlots = Cycles * 4
604 *
605 * The scaling factor is communicated in the sysfs unit.
606 *
607 * In some cases the CPU may not be able to measure all the formulas due to
608 * missing events. In this case multiple formulas are combined, as possible.
609 *
610 * Full TopDown supports more levels to sub-divide each area: for example
611 * BackendBound into computing bound and memory bound. For now we only
612 * support Level 1 TopDown.
613 */
614
615static double sanitize_val(double x)
616{
617 if (x < 0 && x >= -0.02)
618 return 0.0;
619 return x;
620}
621
622static double td_total_slots(int ctx, int cpu, struct runtime_stat *st)
623{
624 return runtime_stat_avg(st, STAT_TOPDOWN_TOTAL_SLOTS, ctx, cpu);
625}
626
627static double td_bad_spec(int ctx, int cpu, struct runtime_stat *st)
628{
629 double bad_spec = 0;
630 double total_slots;
631 double total;
632
633 total = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_ISSUED, ctx, cpu) -
634 runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED, ctx, cpu) +
635 runtime_stat_avg(st, STAT_TOPDOWN_RECOVERY_BUBBLES, ctx, cpu);
636
637 total_slots = td_total_slots(ctx, cpu, st);
638 if (total_slots)
639 bad_spec = total / total_slots;
640 return sanitize_val(bad_spec);
641}
642
643static double td_retiring(int ctx, int cpu, struct runtime_stat *st)
644{
645 double retiring = 0;
646 double total_slots = td_total_slots(ctx, cpu, st);
647 double ret_slots = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED,
648 ctx, cpu);
649
650 if (total_slots)
651 retiring = ret_slots / total_slots;
652 return retiring;
653}
654
655static double td_fe_bound(int ctx, int cpu, struct runtime_stat *st)
656{
657 double fe_bound = 0;
658 double total_slots = td_total_slots(ctx, cpu, st);
659 double fetch_bub = runtime_stat_avg(st, STAT_TOPDOWN_FETCH_BUBBLES,
660 ctx, cpu);
661
662 if (total_slots)
663 fe_bound = fetch_bub / total_slots;
664 return fe_bound;
665}
666
667static double td_be_bound(int ctx, int cpu, struct runtime_stat *st)
668{
669 double sum = (td_fe_bound(ctx, cpu, st) +
670 td_bad_spec(ctx, cpu, st) +
671 td_retiring(ctx, cpu, st));
672 if (sum == 0)
673 return 0;
674 return sanitize_val(1.0 - sum);
675}
676
677static void print_smi_cost(int cpu, struct perf_evsel *evsel,
678 struct perf_stat_output_ctx *out,
679 struct runtime_stat *st)
680{
681 double smi_num, aperf, cycles, cost = 0.0;
682 int ctx = evsel_context(evsel);
683 const char *color = NULL;
684
685 smi_num = runtime_stat_avg(st, STAT_SMI_NUM, ctx, cpu);
686 aperf = runtime_stat_avg(st, STAT_APERF, ctx, cpu);
687 cycles = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
688
689 if ((cycles == 0) || (aperf == 0))
690 return;
691
692 if (smi_num)
693 cost = (aperf - cycles) / aperf * 100.00;
694
695 if (cost > 10)
696 color = PERF_COLOR_RED;
697 out->print_metric(out->ctx, color, "%8.1f%%", "SMI cycles%", cost);
698 out->print_metric(out->ctx, NULL, "%4.0f", "SMI#", smi_num);
699}
700
701static void generic_metric(const char *metric_expr,
702 struct perf_evsel **metric_events,
703 char *name,
704 const char *metric_name,
705 double avg,
706 int cpu,
707 struct perf_stat_output_ctx *out,
708 struct runtime_stat *st)
709{
710 print_metric_t print_metric = out->print_metric;
711 struct parse_ctx pctx;
712 double ratio;
713 int i;
714 void *ctxp = out->ctx;
715
716 expr__ctx_init(&pctx);
717 expr__add_id(&pctx, name, avg);
718 for (i = 0; metric_events[i]; i++) {
719 struct saved_value *v;
720 struct stats *stats;
721 double scale;
722
723 if (!strcmp(metric_events[i]->name, "duration_time")) {
724 stats = &walltime_nsecs_stats;
725 scale = 1e-9;
726 } else {
727 v = saved_value_lookup(metric_events[i], cpu, false,
728 STAT_NONE, 0, st);
729 if (!v)
730 break;
731 stats = &v->stats;
732 scale = 1.0;
733 }
734 expr__add_id(&pctx, metric_events[i]->name, avg_stats(stats)*scale);
735 }
736 if (!metric_events[i]) {
737 const char *p = metric_expr;
738
739 if (expr__parse(&ratio, &pctx, &p) == 0)
740 print_metric(ctxp, NULL, "%8.1f",
741 metric_name ?
742 metric_name :
743 out->force_header ? name : "",
744 ratio);
745 else
746 print_metric(ctxp, NULL, NULL,
747 out->force_header ?
748 (metric_name ? metric_name : name) : "", 0);
749 } else
750 print_metric(ctxp, NULL, NULL, "", 0);
751}
752
753void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
754 double avg, int cpu,
755 struct perf_stat_output_ctx *out,
756 struct rblist *metric_events,
757 struct runtime_stat *st)
758{
759 void *ctxp = out->ctx;
760 print_metric_t print_metric = out->print_metric;
761 double total, ratio = 0.0, total2;
762 const char *color = NULL;
763 int ctx = evsel_context(evsel);
764 struct metric_event *me;
765 int num = 1;
766
767 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
768 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
769
770 if (total) {
771 ratio = avg / total;
772 print_metric(ctxp, NULL, "%7.2f ",
773 "insn per cycle", ratio);
774 } else {
775 print_metric(ctxp, NULL, NULL, "insn per cycle", 0);
776 }
777
778 total = runtime_stat_avg(st, STAT_STALLED_CYCLES_FRONT,
779 ctx, cpu);
780
781 total = max(total, runtime_stat_avg(st,
782 STAT_STALLED_CYCLES_BACK,
783 ctx, cpu));
784
785 if (total && avg) {
786 out->new_line(ctxp);
787 ratio = total / avg;
788 print_metric(ctxp, NULL, "%7.2f ",
789 "stalled cycles per insn",
790 ratio);
791 } else if (have_frontend_stalled) {
792 print_metric(ctxp, NULL, NULL,
793 "stalled cycles per insn", 0);
794 }
795 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) {
796 if (runtime_stat_n(st, STAT_BRANCHES, ctx, cpu) != 0)
797 print_branch_misses(cpu, evsel, avg, out, st);
798 else
799 print_metric(ctxp, NULL, NULL, "of all branches", 0);
800 } else if (
801 evsel->attr.type == PERF_TYPE_HW_CACHE &&
802 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
803 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
804 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
805
806 if (runtime_stat_n(st, STAT_L1_DCACHE, ctx, cpu) != 0)
807 print_l1_dcache_misses(cpu, evsel, avg, out, st);
808 else
809 print_metric(ctxp, NULL, NULL, "of all L1-dcache hits", 0);
810 } else if (
811 evsel->attr.type == PERF_TYPE_HW_CACHE &&
812 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
813 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
814 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
815
816 if (runtime_stat_n(st, STAT_L1_ICACHE, ctx, cpu) != 0)
817 print_l1_icache_misses(cpu, evsel, avg, out, st);
818 else
819 print_metric(ctxp, NULL, NULL, "of all L1-icache hits", 0);
820 } else if (
821 evsel->attr.type == PERF_TYPE_HW_CACHE &&
822 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
823 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
824 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
825
826 if (runtime_stat_n(st, STAT_DTLB_CACHE, ctx, cpu) != 0)
827 print_dtlb_cache_misses(cpu, evsel, avg, out, st);
828 else
829 print_metric(ctxp, NULL, NULL, "of all dTLB cache hits", 0);
830 } else if (
831 evsel->attr.type == PERF_TYPE_HW_CACHE &&
832 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
833 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
834 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
835
836 if (runtime_stat_n(st, STAT_ITLB_CACHE, ctx, cpu) != 0)
837 print_itlb_cache_misses(cpu, evsel, avg, out, st);
838 else
839 print_metric(ctxp, NULL, NULL, "of all iTLB cache hits", 0);
840 } else if (
841 evsel->attr.type == PERF_TYPE_HW_CACHE &&
842 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
843 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
844 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
845
846 if (runtime_stat_n(st, STAT_LL_CACHE, ctx, cpu) != 0)
847 print_ll_cache_misses(cpu, evsel, avg, out, st);
848 else
849 print_metric(ctxp, NULL, NULL, "of all LL-cache hits", 0);
850 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) {
851 total = runtime_stat_avg(st, STAT_CACHEREFS, ctx, cpu);
852
853 if (total)
854 ratio = avg * 100 / total;
855
856 if (runtime_stat_n(st, STAT_CACHEREFS, ctx, cpu) != 0)
857 print_metric(ctxp, NULL, "%8.3f %%",
858 "of all cache refs", ratio);
859 else
860 print_metric(ctxp, NULL, NULL, "of all cache refs", 0);
861 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
862 print_stalled_cycles_frontend(cpu, evsel, avg, out, st);
863 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
864 print_stalled_cycles_backend(cpu, evsel, avg, out, st);
865 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
866 total = runtime_stat_avg(st, STAT_NSECS, 0, cpu);
867
868 if (total) {
869 ratio = avg / total;
870 print_metric(ctxp, NULL, "%8.3f", "GHz", ratio);
871 } else {
872 print_metric(ctxp, NULL, NULL, "Ghz", 0);
873 }
874 } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX)) {
875 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
876
877 if (total)
878 print_metric(ctxp, NULL,
879 "%7.2f%%", "transactional cycles",
880 100.0 * (avg / total));
881 else
882 print_metric(ctxp, NULL, NULL, "transactional cycles",
883 0);
884 } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX_CP)) {
885 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
886 total2 = runtime_stat_avg(st, STAT_CYCLES_IN_TX, ctx, cpu);
887
888 if (total2 < avg)
889 total2 = avg;
890 if (total)
891 print_metric(ctxp, NULL, "%7.2f%%", "aborted cycles",
892 100.0 * ((total2-avg) / total));
893 else
894 print_metric(ctxp, NULL, NULL, "aborted cycles", 0);
895 } else if (perf_stat_evsel__is(evsel, TRANSACTION_START)) {
896 total = runtime_stat_avg(st, STAT_CYCLES_IN_TX,
897 ctx, cpu);
898
899 if (avg)
900 ratio = total / avg;
901
902 if (runtime_stat_n(st, STAT_CYCLES_IN_TX, ctx, cpu) != 0)
903 print_metric(ctxp, NULL, "%8.0f",
904 "cycles / transaction", ratio);
905 else
906 print_metric(ctxp, NULL, NULL, "cycles / transaction",
907 0);
908 } else if (perf_stat_evsel__is(evsel, ELISION_START)) {
909 total = runtime_stat_avg(st, STAT_CYCLES_IN_TX,
910 ctx, cpu);
911
912 if (avg)
913 ratio = total / avg;
914
915 print_metric(ctxp, NULL, "%8.0f", "cycles / elision", ratio);
916 } else if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK) ||
917 perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK)) {
918 if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0)
919 print_metric(ctxp, NULL, "%8.3f", "CPUs utilized",
920 avg / ratio);
921 else
922 print_metric(ctxp, NULL, NULL, "CPUs utilized", 0);
923 } else if (perf_stat_evsel__is(evsel, TOPDOWN_FETCH_BUBBLES)) {
924 double fe_bound = td_fe_bound(ctx, cpu, st);
925
926 if (fe_bound > 0.2)
927 color = PERF_COLOR_RED;
928 print_metric(ctxp, color, "%8.1f%%", "frontend bound",
929 fe_bound * 100.);
930 } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_RETIRED)) {
931 double retiring = td_retiring(ctx, cpu, st);
932
933 if (retiring > 0.7)
934 color = PERF_COLOR_GREEN;
935 print_metric(ctxp, color, "%8.1f%%", "retiring",
936 retiring * 100.);
937 } else if (perf_stat_evsel__is(evsel, TOPDOWN_RECOVERY_BUBBLES)) {
938 double bad_spec = td_bad_spec(ctx, cpu, st);
939
940 if (bad_spec > 0.1)
941 color = PERF_COLOR_RED;
942 print_metric(ctxp, color, "%8.1f%%", "bad speculation",
943 bad_spec * 100.);
944 } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_ISSUED)) {
945 double be_bound = td_be_bound(ctx, cpu, st);
946 const char *name = "backend bound";
947 static int have_recovery_bubbles = -1;
948
949 /* In case the CPU does not support topdown-recovery-bubbles */
950 if (have_recovery_bubbles < 0)
951 have_recovery_bubbles = pmu_have_event("cpu",
952 "topdown-recovery-bubbles");
953 if (!have_recovery_bubbles)
954 name = "backend bound/bad spec";
955
956 if (be_bound > 0.2)
957 color = PERF_COLOR_RED;
958 if (td_total_slots(ctx, cpu, st) > 0)
959 print_metric(ctxp, color, "%8.1f%%", name,
960 be_bound * 100.);
961 else
962 print_metric(ctxp, NULL, NULL, name, 0);
963 } else if (evsel->metric_expr) {
964 generic_metric(evsel->metric_expr, evsel->metric_events, evsel->name,
965 evsel->metric_name, avg, cpu, out, st);
966 } else if (runtime_stat_n(st, STAT_NSECS, 0, cpu) != 0) {
967 char unit = 'M';
968 char unit_buf[10];
969
970 total = runtime_stat_avg(st, STAT_NSECS, 0, cpu);
971
972 if (total)
973 ratio = 1000.0 * avg / total;
974 if (ratio < 0.001) {
975 ratio *= 1000;
976 unit = 'K';
977 }
978 snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);
979 print_metric(ctxp, NULL, "%8.3f", unit_buf, ratio);
980 } else if (perf_stat_evsel__is(evsel, SMI_NUM)) {
981 print_smi_cost(cpu, evsel, out, st);
982 } else {
983 num = 0;
984 }
985
986 if ((me = metricgroup__lookup(metric_events, evsel, false)) != NULL) {
987 struct metric_expr *mexp;
988
989 list_for_each_entry (mexp, &me->head, nd) {
990 if (num++ > 0)
991 out->new_line(ctxp);
992 generic_metric(mexp->metric_expr, mexp->metric_events,
993 evsel->name, mexp->metric_name,
994 avg, cpu, out, st);
995 }
996 }
997 if (num == 0)
998 print_metric(ctxp, NULL, NULL, NULL, 0);
999}
1// SPDX-License-Identifier: GPL-2.0
2#include <math.h>
3#include <stdio.h>
4#include "evsel.h"
5#include "stat.h"
6#include "color.h"
7#include "debug.h"
8#include "pmu.h"
9#include "rblist.h"
10#include "evlist.h"
11#include "expr.h"
12#include "metricgroup.h"
13#include "cgroup.h"
14#include "units.h"
15#include <linux/zalloc.h>
16#include "iostat.h"
17#include "util/hashmap.h"
18
19struct stats walltime_nsecs_stats;
20struct rusage_stats ru_stats;
21
22enum {
23 CTX_BIT_USER = 1 << 0,
24 CTX_BIT_KERNEL = 1 << 1,
25 CTX_BIT_HV = 1 << 2,
26 CTX_BIT_HOST = 1 << 3,
27 CTX_BIT_IDLE = 1 << 4,
28 CTX_BIT_MAX = 1 << 5,
29};
30
31enum stat_type {
32 STAT_NONE = 0,
33 STAT_NSECS,
34 STAT_CYCLES,
35 STAT_INSTRUCTIONS,
36 STAT_STALLED_CYCLES_FRONT,
37 STAT_STALLED_CYCLES_BACK,
38 STAT_BRANCHES,
39 STAT_BRANCH_MISS,
40 STAT_CACHE_REFS,
41 STAT_CACHE_MISSES,
42 STAT_L1_DCACHE,
43 STAT_L1_ICACHE,
44 STAT_LL_CACHE,
45 STAT_ITLB_CACHE,
46 STAT_DTLB_CACHE,
47 STAT_L1D_MISS,
48 STAT_L1I_MISS,
49 STAT_LL_MISS,
50 STAT_DTLB_MISS,
51 STAT_ITLB_MISS,
52 STAT_MAX
53};
54
55static int evsel_context(const struct evsel *evsel)
56{
57 int ctx = 0;
58
59 if (evsel->core.attr.exclude_kernel)
60 ctx |= CTX_BIT_KERNEL;
61 if (evsel->core.attr.exclude_user)
62 ctx |= CTX_BIT_USER;
63 if (evsel->core.attr.exclude_hv)
64 ctx |= CTX_BIT_HV;
65 if (evsel->core.attr.exclude_host)
66 ctx |= CTX_BIT_HOST;
67 if (evsel->core.attr.exclude_idle)
68 ctx |= CTX_BIT_IDLE;
69
70 return ctx;
71}
72
73void perf_stat__reset_shadow_stats(void)
74{
75 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
76 memset(&ru_stats, 0, sizeof(ru_stats));
77}
78
79static enum stat_type evsel__stat_type(const struct evsel *evsel)
80{
81 /* Fake perf_hw_cache_op_id values for use with evsel__match. */
82 u64 PERF_COUNT_hw_cache_l1d_miss = PERF_COUNT_HW_CACHE_L1D |
83 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
84 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);
85 u64 PERF_COUNT_hw_cache_l1i_miss = PERF_COUNT_HW_CACHE_L1I |
86 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
87 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);
88 u64 PERF_COUNT_hw_cache_ll_miss = PERF_COUNT_HW_CACHE_LL |
89 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
90 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);
91 u64 PERF_COUNT_hw_cache_dtlb_miss = PERF_COUNT_HW_CACHE_DTLB |
92 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
93 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);
94 u64 PERF_COUNT_hw_cache_itlb_miss = PERF_COUNT_HW_CACHE_ITLB |
95 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
96 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);
97
98 if (evsel__is_clock(evsel))
99 return STAT_NSECS;
100 else if (evsel__match(evsel, HARDWARE, HW_CPU_CYCLES))
101 return STAT_CYCLES;
102 else if (evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS))
103 return STAT_INSTRUCTIONS;
104 else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
105 return STAT_STALLED_CYCLES_FRONT;
106 else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND))
107 return STAT_STALLED_CYCLES_BACK;
108 else if (evsel__match(evsel, HARDWARE, HW_BRANCH_INSTRUCTIONS))
109 return STAT_BRANCHES;
110 else if (evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES))
111 return STAT_BRANCH_MISS;
112 else if (evsel__match(evsel, HARDWARE, HW_CACHE_REFERENCES))
113 return STAT_CACHE_REFS;
114 else if (evsel__match(evsel, HARDWARE, HW_CACHE_MISSES))
115 return STAT_CACHE_MISSES;
116 else if (evsel__match(evsel, HW_CACHE, HW_CACHE_L1D))
117 return STAT_L1_DCACHE;
118 else if (evsel__match(evsel, HW_CACHE, HW_CACHE_L1I))
119 return STAT_L1_ICACHE;
120 else if (evsel__match(evsel, HW_CACHE, HW_CACHE_LL))
121 return STAT_LL_CACHE;
122 else if (evsel__match(evsel, HW_CACHE, HW_CACHE_DTLB))
123 return STAT_DTLB_CACHE;
124 else if (evsel__match(evsel, HW_CACHE, HW_CACHE_ITLB))
125 return STAT_ITLB_CACHE;
126 else if (evsel__match(evsel, HW_CACHE, hw_cache_l1d_miss))
127 return STAT_L1D_MISS;
128 else if (evsel__match(evsel, HW_CACHE, hw_cache_l1i_miss))
129 return STAT_L1I_MISS;
130 else if (evsel__match(evsel, HW_CACHE, hw_cache_ll_miss))
131 return STAT_LL_MISS;
132 else if (evsel__match(evsel, HW_CACHE, hw_cache_dtlb_miss))
133 return STAT_DTLB_MISS;
134 else if (evsel__match(evsel, HW_CACHE, hw_cache_itlb_miss))
135 return STAT_ITLB_MISS;
136 return STAT_NONE;
137}
138
139static const char *get_ratio_color(const double ratios[3], double val)
140{
141 const char *color = PERF_COLOR_NORMAL;
142
143 if (val > ratios[0])
144 color = PERF_COLOR_RED;
145 else if (val > ratios[1])
146 color = PERF_COLOR_MAGENTA;
147 else if (val > ratios[2])
148 color = PERF_COLOR_YELLOW;
149
150 return color;
151}
152
153static double find_stat(const struct evsel *evsel, int aggr_idx, enum stat_type type)
154{
155 const struct evsel *cur;
156 int evsel_ctx = evsel_context(evsel);
157
158 evlist__for_each_entry(evsel->evlist, cur) {
159 struct perf_stat_aggr *aggr;
160
161 /* Ignore the evsel that is being searched from. */
162 if (evsel == cur)
163 continue;
164
165 /* Ignore evsels that are part of different groups. */
166 if (evsel->core.leader->nr_members > 1 &&
167 evsel->core.leader != cur->core.leader)
168 continue;
169 /* Ignore evsels with mismatched modifiers. */
170 if (evsel_ctx != evsel_context(cur))
171 continue;
172 /* Ignore if not the cgroup we're looking for. */
173 if (evsel->cgrp != cur->cgrp)
174 continue;
175 /* Ignore if not the stat we're looking for. */
176 if (type != evsel__stat_type(cur))
177 continue;
178
179 aggr = &cur->stats->aggr[aggr_idx];
180 if (type == STAT_NSECS)
181 return aggr->counts.val;
182 return aggr->counts.val * cur->scale;
183 }
184 return 0.0;
185}
186
187static void print_ratio(struct perf_stat_config *config,
188 const struct evsel *evsel, int aggr_idx,
189 double numerator, struct perf_stat_output_ctx *out,
190 enum stat_type denominator_type,
191 const double color_ratios[3], const char *unit)
192{
193 double denominator = find_stat(evsel, aggr_idx, denominator_type);
194
195 if (numerator && denominator) {
196 double ratio = numerator / denominator * 100.0;
197 const char *color = get_ratio_color(color_ratios, ratio);
198
199 out->print_metric(config, out->ctx, color, "%7.2f%%", unit, ratio);
200 } else
201 out->print_metric(config, out->ctx, NULL, NULL, unit, 0);
202}
203
204static void print_stalled_cycles_front(struct perf_stat_config *config,
205 const struct evsel *evsel,
206 int aggr_idx, double stalled,
207 struct perf_stat_output_ctx *out)
208{
209 static const double color_ratios[3] = {50.0, 30.0, 10.0};
210
211 print_ratio(config, evsel, aggr_idx, stalled, out, STAT_CYCLES, color_ratios,
212 "frontend cycles idle");
213}
214
215static void print_stalled_cycles_back(struct perf_stat_config *config,
216 const struct evsel *evsel,
217 int aggr_idx, double stalled,
218 struct perf_stat_output_ctx *out)
219{
220 static const double color_ratios[3] = {75.0, 50.0, 20.0};
221
222 print_ratio(config, evsel, aggr_idx, stalled, out, STAT_CYCLES, color_ratios,
223 "backend cycles idle");
224}
225
226static void print_branch_miss(struct perf_stat_config *config,
227 const struct evsel *evsel,
228 int aggr_idx, double misses,
229 struct perf_stat_output_ctx *out)
230{
231 static const double color_ratios[3] = {20.0, 10.0, 5.0};
232
233 print_ratio(config, evsel, aggr_idx, misses, out, STAT_BRANCHES, color_ratios,
234 "of all branches");
235}
236
237static void print_l1d_miss(struct perf_stat_config *config,
238 const struct evsel *evsel,
239 int aggr_idx, double misses,
240 struct perf_stat_output_ctx *out)
241{
242 static const double color_ratios[3] = {20.0, 10.0, 5.0};
243
244 print_ratio(config, evsel, aggr_idx, misses, out, STAT_L1_DCACHE, color_ratios,
245 "of all L1-dcache accesses");
246}
247
248static void print_l1i_miss(struct perf_stat_config *config,
249 const struct evsel *evsel,
250 int aggr_idx, double misses,
251 struct perf_stat_output_ctx *out)
252{
253 static const double color_ratios[3] = {20.0, 10.0, 5.0};
254
255 print_ratio(config, evsel, aggr_idx, misses, out, STAT_L1_ICACHE, color_ratios,
256 "of all L1-icache accesses");
257}
258
259static void print_ll_miss(struct perf_stat_config *config,
260 const struct evsel *evsel,
261 int aggr_idx, double misses,
262 struct perf_stat_output_ctx *out)
263{
264 static const double color_ratios[3] = {20.0, 10.0, 5.0};
265
266 print_ratio(config, evsel, aggr_idx, misses, out, STAT_LL_CACHE, color_ratios,
267 "of all LL-cache accesses");
268}
269
270static void print_dtlb_miss(struct perf_stat_config *config,
271 const struct evsel *evsel,
272 int aggr_idx, double misses,
273 struct perf_stat_output_ctx *out)
274{
275 static const double color_ratios[3] = {20.0, 10.0, 5.0};
276
277 print_ratio(config, evsel, aggr_idx, misses, out, STAT_DTLB_CACHE, color_ratios,
278 "of all dTLB cache accesses");
279}
280
281static void print_itlb_miss(struct perf_stat_config *config,
282 const struct evsel *evsel,
283 int aggr_idx, double misses,
284 struct perf_stat_output_ctx *out)
285{
286 static const double color_ratios[3] = {20.0, 10.0, 5.0};
287
288 print_ratio(config, evsel, aggr_idx, misses, out, STAT_ITLB_CACHE, color_ratios,
289 "of all iTLB cache accesses");
290}
291
292static void print_cache_miss(struct perf_stat_config *config,
293 const struct evsel *evsel,
294 int aggr_idx, double misses,
295 struct perf_stat_output_ctx *out)
296{
297 static const double color_ratios[3] = {20.0, 10.0, 5.0};
298
299 print_ratio(config, evsel, aggr_idx, misses, out, STAT_CACHE_REFS, color_ratios,
300 "of all cache refs");
301}
302
303static void print_instructions(struct perf_stat_config *config,
304 const struct evsel *evsel,
305 int aggr_idx, double instructions,
306 struct perf_stat_output_ctx *out)
307{
308 print_metric_t print_metric = out->print_metric;
309 void *ctxp = out->ctx;
310 double cycles = find_stat(evsel, aggr_idx, STAT_CYCLES);
311 double max_stalled = max(find_stat(evsel, aggr_idx, STAT_STALLED_CYCLES_FRONT),
312 find_stat(evsel, aggr_idx, STAT_STALLED_CYCLES_BACK));
313
314 if (cycles) {
315 print_metric(config, ctxp, NULL, "%7.2f ", "insn per cycle",
316 instructions / cycles);
317 } else
318 print_metric(config, ctxp, NULL, NULL, "insn per cycle", 0);
319
320 if (max_stalled && instructions) {
321 out->new_line(config, ctxp);
322 print_metric(config, ctxp, NULL, "%7.2f ", "stalled cycles per insn",
323 max_stalled / instructions);
324 }
325}
326
327static void print_cycles(struct perf_stat_config *config,
328 const struct evsel *evsel,
329 int aggr_idx, double cycles,
330 struct perf_stat_output_ctx *out)
331{
332 double nsecs = find_stat(evsel, aggr_idx, STAT_NSECS);
333
334 if (cycles && nsecs) {
335 double ratio = cycles / nsecs;
336
337 out->print_metric(config, out->ctx, NULL, "%8.3f", "GHz", ratio);
338 } else
339 out->print_metric(config, out->ctx, NULL, NULL, "GHz", 0);
340}
341
342static void print_nsecs(struct perf_stat_config *config,
343 const struct evsel *evsel,
344 int aggr_idx __maybe_unused, double nsecs,
345 struct perf_stat_output_ctx *out)
346{
347 print_metric_t print_metric = out->print_metric;
348 void *ctxp = out->ctx;
349 double wall_time = avg_stats(&walltime_nsecs_stats);
350
351 if (wall_time) {
352 print_metric(config, ctxp, NULL, "%8.3f", "CPUs utilized",
353 nsecs / (wall_time * evsel->scale));
354 } else
355 print_metric(config, ctxp, NULL, NULL, "CPUs utilized", 0);
356}
357
358static int prepare_metric(struct evsel **metric_events,
359 struct metric_ref *metric_refs,
360 struct expr_parse_ctx *pctx,
361 int aggr_idx)
362{
363 int i;
364
365 for (i = 0; metric_events[i]; i++) {
366 char *n;
367 double val;
368 int source_count = 0;
369
370 if (evsel__is_tool(metric_events[i])) {
371 struct stats *stats;
372 double scale;
373
374 switch (metric_events[i]->tool_event) {
375 case PERF_TOOL_DURATION_TIME:
376 stats = &walltime_nsecs_stats;
377 scale = 1e-9;
378 break;
379 case PERF_TOOL_USER_TIME:
380 stats = &ru_stats.ru_utime_usec_stat;
381 scale = 1e-6;
382 break;
383 case PERF_TOOL_SYSTEM_TIME:
384 stats = &ru_stats.ru_stime_usec_stat;
385 scale = 1e-6;
386 break;
387 case PERF_TOOL_NONE:
388 pr_err("Invalid tool event 'none'");
389 abort();
390 case PERF_TOOL_MAX:
391 pr_err("Invalid tool event 'max'");
392 abort();
393 default:
394 pr_err("Unknown tool event '%s'", evsel__name(metric_events[i]));
395 abort();
396 }
397 val = avg_stats(stats) * scale;
398 source_count = 1;
399 } else {
400 struct perf_stat_evsel *ps = metric_events[i]->stats;
401 struct perf_stat_aggr *aggr = &ps->aggr[aggr_idx];
402
403 if (!aggr)
404 break;
405
406 if (!metric_events[i]->supported) {
407 /*
408 * Not supported events will have a count of 0,
409 * which can be confusing in a
410 * metric. Explicitly set the value to NAN. Not
411 * counted events (enable time of 0) are read as
412 * 0.
413 */
414 val = NAN;
415 source_count = 0;
416 } else {
417 /*
418 * If an event was scaled during stat gathering,
419 * reverse the scale before computing the
420 * metric.
421 */
422 val = aggr->counts.val * (1.0 / metric_events[i]->scale);
423 source_count = evsel__source_count(metric_events[i]);
424 }
425 }
426 n = strdup(evsel__metric_id(metric_events[i]));
427 if (!n)
428 return -ENOMEM;
429
430 expr__add_id_val_source_count(pctx, n, val, source_count);
431 }
432
433 for (int j = 0; metric_refs && metric_refs[j].metric_name; j++) {
434 int ret = expr__add_ref(pctx, &metric_refs[j]);
435
436 if (ret)
437 return ret;
438 }
439
440 return i;
441}
442
443static void generic_metric(struct perf_stat_config *config,
444 const char *metric_expr,
445 const char *metric_threshold,
446 struct evsel **metric_events,
447 struct metric_ref *metric_refs,
448 char *name,
449 const char *metric_name,
450 const char *metric_unit,
451 int runtime,
452 int aggr_idx,
453 struct perf_stat_output_ctx *out)
454{
455 print_metric_t print_metric = out->print_metric;
456 struct expr_parse_ctx *pctx;
457 double ratio, scale, threshold;
458 int i;
459 void *ctxp = out->ctx;
460 const char *color = NULL;
461
462 pctx = expr__ctx_new();
463 if (!pctx)
464 return;
465
466 if (config->user_requested_cpu_list)
467 pctx->sctx.user_requested_cpu_list = strdup(config->user_requested_cpu_list);
468 pctx->sctx.runtime = runtime;
469 pctx->sctx.system_wide = config->system_wide;
470 i = prepare_metric(metric_events, metric_refs, pctx, aggr_idx);
471 if (i < 0) {
472 expr__ctx_free(pctx);
473 return;
474 }
475 if (!metric_events[i]) {
476 if (expr__parse(&ratio, pctx, metric_expr) == 0) {
477 char *unit;
478 char metric_bf[64];
479
480 if (metric_threshold &&
481 expr__parse(&threshold, pctx, metric_threshold) == 0 &&
482 !isnan(threshold)) {
483 color = fpclassify(threshold) == FP_ZERO
484 ? PERF_COLOR_GREEN : PERF_COLOR_RED;
485 }
486
487 if (metric_unit && metric_name) {
488 if (perf_pmu__convert_scale(metric_unit,
489 &unit, &scale) >= 0) {
490 ratio *= scale;
491 }
492 if (strstr(metric_expr, "?"))
493 scnprintf(metric_bf, sizeof(metric_bf),
494 "%s %s_%d", unit, metric_name, runtime);
495 else
496 scnprintf(metric_bf, sizeof(metric_bf),
497 "%s %s", unit, metric_name);
498
499 print_metric(config, ctxp, color, "%8.1f",
500 metric_bf, ratio);
501 } else {
502 print_metric(config, ctxp, color, "%8.2f",
503 metric_name ?
504 metric_name :
505 out->force_header ? name : "",
506 ratio);
507 }
508 } else {
509 print_metric(config, ctxp, color, /*unit=*/NULL,
510 out->force_header ?
511 (metric_name ? metric_name : name) : "", 0);
512 }
513 } else {
514 print_metric(config, ctxp, color, /*unit=*/NULL,
515 out->force_header ?
516 (metric_name ? metric_name : name) : "", 0);
517 }
518
519 expr__ctx_free(pctx);
520}
521
522double test_generic_metric(struct metric_expr *mexp, int aggr_idx)
523{
524 struct expr_parse_ctx *pctx;
525 double ratio = 0.0;
526
527 pctx = expr__ctx_new();
528 if (!pctx)
529 return NAN;
530
531 if (prepare_metric(mexp->metric_events, mexp->metric_refs, pctx, aggr_idx) < 0)
532 goto out;
533
534 if (expr__parse(&ratio, pctx, mexp->metric_expr))
535 ratio = 0.0;
536
537out:
538 expr__ctx_free(pctx);
539 return ratio;
540}
541
542static void perf_stat__print_metricgroup_header(struct perf_stat_config *config,
543 struct evsel *evsel,
544 void *ctxp,
545 const char *name,
546 struct perf_stat_output_ctx *out)
547{
548 bool need_full_name = perf_pmus__num_core_pmus() > 1;
549 static const char *last_name;
550 static const char *last_pmu;
551 char full_name[64];
552
553 /*
554 * A metricgroup may have several metric events,
555 * e.g.,TopdownL1 on e-core of ADL.
556 * The name has been output by the first metric
557 * event. Only align with other metics from
558 * different metric events.
559 */
560 if (last_name && !strcmp(last_name, name)) {
561 if (!need_full_name || !strcmp(last_pmu, evsel->pmu_name)) {
562 out->print_metricgroup_header(config, ctxp, NULL);
563 return;
564 }
565 }
566
567 if (need_full_name)
568 scnprintf(full_name, sizeof(full_name), "%s (%s)", name, evsel->pmu_name);
569 else
570 scnprintf(full_name, sizeof(full_name), "%s", name);
571
572 out->print_metricgroup_header(config, ctxp, full_name);
573
574 last_name = name;
575 last_pmu = evsel->pmu_name;
576}
577
578/**
579 * perf_stat__print_shadow_stats_metricgroup - Print out metrics associated with the evsel
580 * For the non-default, all metrics associated
581 * with the evsel are printed.
582 * For the default mode, only the metrics from
583 * the same metricgroup and the name of the
584 * metricgroup are printed. To print the metrics
585 * from the next metricgroup (if available),
586 * invoke the function with correspoinding
587 * metric_expr.
588 */
589void *perf_stat__print_shadow_stats_metricgroup(struct perf_stat_config *config,
590 struct evsel *evsel,
591 int aggr_idx,
592 int *num,
593 void *from,
594 struct perf_stat_output_ctx *out,
595 struct rblist *metric_events)
596{
597 struct metric_event *me;
598 struct metric_expr *mexp = from;
599 void *ctxp = out->ctx;
600 bool header_printed = false;
601 const char *name = NULL;
602
603 me = metricgroup__lookup(metric_events, evsel, false);
604 if (me == NULL)
605 return NULL;
606
607 if (!mexp)
608 mexp = list_first_entry(&me->head, typeof(*mexp), nd);
609
610 list_for_each_entry_from(mexp, &me->head, nd) {
611 /* Print the display name of the Default metricgroup */
612 if (!config->metric_only && me->is_default) {
613 if (!name)
614 name = mexp->default_metricgroup_name;
615 /*
616 * Two or more metricgroup may share the same metric
617 * event, e.g., TopdownL1 and TopdownL2 on SPR.
618 * Return and print the prefix, e.g., noise, running
619 * for the next metricgroup.
620 */
621 if (strcmp(name, mexp->default_metricgroup_name))
622 return (void *)mexp;
623 /* Only print the name of the metricgroup once */
624 if (!header_printed) {
625 header_printed = true;
626 perf_stat__print_metricgroup_header(config, evsel, ctxp,
627 name, out);
628 }
629 }
630
631 if ((*num)++ > 0)
632 out->new_line(config, ctxp);
633 generic_metric(config, mexp->metric_expr, mexp->metric_threshold,
634 mexp->metric_events, mexp->metric_refs, evsel->name,
635 mexp->metric_name, mexp->metric_unit, mexp->runtime,
636 aggr_idx, out);
637 }
638
639 return NULL;
640}
641
642void perf_stat__print_shadow_stats(struct perf_stat_config *config,
643 struct evsel *evsel,
644 double avg, int aggr_idx,
645 struct perf_stat_output_ctx *out,
646 struct rblist *metric_events)
647{
648 typedef void (*stat_print_function_t)(struct perf_stat_config *config,
649 const struct evsel *evsel,
650 int aggr_idx, double misses,
651 struct perf_stat_output_ctx *out);
652 static const stat_print_function_t stat_print_function[STAT_MAX] = {
653 [STAT_INSTRUCTIONS] = print_instructions,
654 [STAT_BRANCH_MISS] = print_branch_miss,
655 [STAT_L1D_MISS] = print_l1d_miss,
656 [STAT_L1I_MISS] = print_l1i_miss,
657 [STAT_DTLB_MISS] = print_dtlb_miss,
658 [STAT_ITLB_MISS] = print_itlb_miss,
659 [STAT_LL_MISS] = print_ll_miss,
660 [STAT_CACHE_MISSES] = print_cache_miss,
661 [STAT_STALLED_CYCLES_FRONT] = print_stalled_cycles_front,
662 [STAT_STALLED_CYCLES_BACK] = print_stalled_cycles_back,
663 [STAT_CYCLES] = print_cycles,
664 [STAT_NSECS] = print_nsecs,
665 };
666 print_metric_t print_metric = out->print_metric;
667 void *ctxp = out->ctx;
668 int num = 1;
669
670 if (config->iostat_run) {
671 iostat_print_metric(config, evsel, out);
672 } else {
673 stat_print_function_t fn = stat_print_function[evsel__stat_type(evsel)];
674
675 if (fn)
676 fn(config, evsel, aggr_idx, avg, out);
677 else {
678 double nsecs = find_stat(evsel, aggr_idx, STAT_NSECS);
679
680 if (nsecs) {
681 char unit = ' ';
682 char unit_buf[10] = "/sec";
683 double ratio = convert_unit_double(1000000000.0 * avg / nsecs,
684 &unit);
685
686 if (unit != ' ')
687 snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);
688 print_metric(config, ctxp, NULL, "%8.3f", unit_buf, ratio);
689 } else
690 num = 0;
691 }
692 }
693
694 perf_stat__print_shadow_stats_metricgroup(config, evsel, aggr_idx,
695 &num, NULL, out, metric_events);
696
697 if (num == 0)
698 print_metric(config, ctxp, NULL, NULL, NULL, 0);
699}
700
701/**
702 * perf_stat__skip_metric_event - Skip the evsel in the Default metricgroup,
703 * if it's not running or not the metric event.
704 */
705bool perf_stat__skip_metric_event(struct evsel *evsel,
706 struct rblist *metric_events,
707 u64 ena, u64 run)
708{
709 if (!evsel->default_metricgroup)
710 return false;
711
712 if (!ena || !run)
713 return true;
714
715 return !metricgroup__lookup(metric_events, evsel, false);
716}