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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#include <linux/zalloc.h>
12
13/*
14 * AGGR_GLOBAL: Use CPU 0
15 * AGGR_SOCKET: Use first CPU of socket
16 * AGGR_DIE: Use first CPU of die
17 * AGGR_CORE: Use first CPU of core
18 * AGGR_NONE: Use matching CPU
19 * AGGR_THREAD: Not supported?
20 */
21static bool have_frontend_stalled;
22
23struct runtime_stat rt_stat;
24struct stats walltime_nsecs_stats;
25
26struct saved_value {
27 struct rb_node rb_node;
28 struct evsel *evsel;
29 enum stat_type type;
30 int ctx;
31 int cpu;
32 struct runtime_stat *stat;
33 struct stats stats;
34 u64 metric_total;
35 int metric_other;
36};
37
38static int saved_value_cmp(struct rb_node *rb_node, const void *entry)
39{
40 struct saved_value *a = container_of(rb_node,
41 struct saved_value,
42 rb_node);
43 const struct saved_value *b = entry;
44
45 if (a->cpu != b->cpu)
46 return a->cpu - b->cpu;
47
48 /*
49 * Previously the rbtree was used to link generic metrics.
50 * The keys were evsel/cpu. Now the rbtree is extended to support
51 * per-thread shadow stats. For shadow stats case, the keys
52 * are cpu/type/ctx/stat (evsel is NULL). For generic metrics
53 * case, the keys are still evsel/cpu (type/ctx/stat are 0 or NULL).
54 */
55 if (a->type != b->type)
56 return a->type - b->type;
57
58 if (a->ctx != b->ctx)
59 return a->ctx - b->ctx;
60
61 if (a->evsel == NULL && b->evsel == NULL) {
62 if (a->stat == b->stat)
63 return 0;
64
65 if ((char *)a->stat < (char *)b->stat)
66 return -1;
67
68 return 1;
69 }
70
71 if (a->evsel == b->evsel)
72 return 0;
73 if ((char *)a->evsel < (char *)b->evsel)
74 return -1;
75 return +1;
76}
77
78static struct rb_node *saved_value_new(struct rblist *rblist __maybe_unused,
79 const void *entry)
80{
81 struct saved_value *nd = malloc(sizeof(struct saved_value));
82
83 if (!nd)
84 return NULL;
85 memcpy(nd, entry, sizeof(struct saved_value));
86 return &nd->rb_node;
87}
88
89static void saved_value_delete(struct rblist *rblist __maybe_unused,
90 struct rb_node *rb_node)
91{
92 struct saved_value *v;
93
94 BUG_ON(!rb_node);
95 v = container_of(rb_node, struct saved_value, rb_node);
96 free(v);
97}
98
99static struct saved_value *saved_value_lookup(struct evsel *evsel,
100 int cpu,
101 bool create,
102 enum stat_type type,
103 int ctx,
104 struct runtime_stat *st)
105{
106 struct rblist *rblist;
107 struct rb_node *nd;
108 struct saved_value dm = {
109 .cpu = cpu,
110 .evsel = evsel,
111 .type = type,
112 .ctx = ctx,
113 .stat = st,
114 };
115
116 rblist = &st->value_list;
117
118 nd = rblist__find(rblist, &dm);
119 if (nd)
120 return container_of(nd, struct saved_value, rb_node);
121 if (create) {
122 rblist__add_node(rblist, &dm);
123 nd = rblist__find(rblist, &dm);
124 if (nd)
125 return container_of(nd, struct saved_value, rb_node);
126 }
127 return NULL;
128}
129
130void runtime_stat__init(struct runtime_stat *st)
131{
132 struct rblist *rblist = &st->value_list;
133
134 rblist__init(rblist);
135 rblist->node_cmp = saved_value_cmp;
136 rblist->node_new = saved_value_new;
137 rblist->node_delete = saved_value_delete;
138}
139
140void runtime_stat__exit(struct runtime_stat *st)
141{
142 rblist__exit(&st->value_list);
143}
144
145void perf_stat__init_shadow_stats(void)
146{
147 have_frontend_stalled = pmu_have_event("cpu", "stalled-cycles-frontend");
148 runtime_stat__init(&rt_stat);
149}
150
151static int evsel_context(struct evsel *evsel)
152{
153 int ctx = 0;
154
155 if (evsel->core.attr.exclude_kernel)
156 ctx |= CTX_BIT_KERNEL;
157 if (evsel->core.attr.exclude_user)
158 ctx |= CTX_BIT_USER;
159 if (evsel->core.attr.exclude_hv)
160 ctx |= CTX_BIT_HV;
161 if (evsel->core.attr.exclude_host)
162 ctx |= CTX_BIT_HOST;
163 if (evsel->core.attr.exclude_idle)
164 ctx |= CTX_BIT_IDLE;
165
166 return ctx;
167}
168
169static void reset_stat(struct runtime_stat *st)
170{
171 struct rblist *rblist;
172 struct rb_node *pos, *next;
173
174 rblist = &st->value_list;
175 next = rb_first_cached(&rblist->entries);
176 while (next) {
177 pos = next;
178 next = rb_next(pos);
179 memset(&container_of(pos, struct saved_value, rb_node)->stats,
180 0,
181 sizeof(struct stats));
182 }
183}
184
185void perf_stat__reset_shadow_stats(void)
186{
187 reset_stat(&rt_stat);
188 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
189}
190
191void perf_stat__reset_shadow_per_stat(struct runtime_stat *st)
192{
193 reset_stat(st);
194}
195
196static void update_runtime_stat(struct runtime_stat *st,
197 enum stat_type type,
198 int ctx, int cpu, u64 count)
199{
200 struct saved_value *v = saved_value_lookup(NULL, cpu, true,
201 type, ctx, st);
202
203 if (v)
204 update_stats(&v->stats, count);
205}
206
207/*
208 * Update various tracking values we maintain to print
209 * more semantic information such as miss/hit ratios,
210 * instruction rates, etc:
211 */
212void perf_stat__update_shadow_stats(struct evsel *counter, u64 count,
213 int cpu, struct runtime_stat *st)
214{
215 int ctx = evsel_context(counter);
216 u64 count_ns = count;
217 struct saved_value *v;
218
219 count *= counter->scale;
220
221 if (perf_evsel__is_clock(counter))
222 update_runtime_stat(st, STAT_NSECS, 0, cpu, count_ns);
223 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
224 update_runtime_stat(st, STAT_CYCLES, ctx, cpu, count);
225 else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
226 update_runtime_stat(st, STAT_CYCLES_IN_TX, ctx, cpu, count);
227 else if (perf_stat_evsel__is(counter, TRANSACTION_START))
228 update_runtime_stat(st, STAT_TRANSACTION, ctx, cpu, count);
229 else if (perf_stat_evsel__is(counter, ELISION_START))
230 update_runtime_stat(st, STAT_ELISION, ctx, cpu, count);
231 else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS))
232 update_runtime_stat(st, STAT_TOPDOWN_TOTAL_SLOTS,
233 ctx, cpu, count);
234 else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED))
235 update_runtime_stat(st, STAT_TOPDOWN_SLOTS_ISSUED,
236 ctx, cpu, count);
237 else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED))
238 update_runtime_stat(st, STAT_TOPDOWN_SLOTS_RETIRED,
239 ctx, cpu, count);
240 else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES))
241 update_runtime_stat(st, STAT_TOPDOWN_FETCH_BUBBLES,
242 ctx, cpu, count);
243 else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES))
244 update_runtime_stat(st, STAT_TOPDOWN_RECOVERY_BUBBLES,
245 ctx, cpu, count);
246 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
247 update_runtime_stat(st, STAT_STALLED_CYCLES_FRONT,
248 ctx, cpu, count);
249 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
250 update_runtime_stat(st, STAT_STALLED_CYCLES_BACK,
251 ctx, cpu, count);
252 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
253 update_runtime_stat(st, STAT_BRANCHES, ctx, cpu, count);
254 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
255 update_runtime_stat(st, STAT_CACHEREFS, ctx, cpu, count);
256 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
257 update_runtime_stat(st, STAT_L1_DCACHE, ctx, cpu, count);
258 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
259 update_runtime_stat(st, STAT_L1_ICACHE, ctx, cpu, count);
260 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
261 update_runtime_stat(st, STAT_LL_CACHE, ctx, cpu, count);
262 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
263 update_runtime_stat(st, STAT_DTLB_CACHE, ctx, cpu, count);
264 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
265 update_runtime_stat(st, STAT_ITLB_CACHE, ctx, cpu, count);
266 else if (perf_stat_evsel__is(counter, SMI_NUM))
267 update_runtime_stat(st, STAT_SMI_NUM, ctx, cpu, count);
268 else if (perf_stat_evsel__is(counter, APERF))
269 update_runtime_stat(st, STAT_APERF, ctx, cpu, count);
270
271 if (counter->collect_stat) {
272 v = saved_value_lookup(counter, cpu, true, STAT_NONE, 0, st);
273 update_stats(&v->stats, count);
274 if (counter->metric_leader)
275 v->metric_total += count;
276 } else if (counter->metric_leader) {
277 v = saved_value_lookup(counter->metric_leader,
278 cpu, true, STAT_NONE, 0, st);
279 v->metric_total += count;
280 v->metric_other++;
281 }
282}
283
284/* used for get_ratio_color() */
285enum grc_type {
286 GRC_STALLED_CYCLES_FE,
287 GRC_STALLED_CYCLES_BE,
288 GRC_CACHE_MISSES,
289 GRC_MAX_NR
290};
291
292static const char *get_ratio_color(enum grc_type type, double ratio)
293{
294 static const double grc_table[GRC_MAX_NR][3] = {
295 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
296 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
297 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
298 };
299 const char *color = PERF_COLOR_NORMAL;
300
301 if (ratio > grc_table[type][0])
302 color = PERF_COLOR_RED;
303 else if (ratio > grc_table[type][1])
304 color = PERF_COLOR_MAGENTA;
305 else if (ratio > grc_table[type][2])
306 color = PERF_COLOR_YELLOW;
307
308 return color;
309}
310
311static struct evsel *perf_stat__find_event(struct evlist *evsel_list,
312 const char *name)
313{
314 struct evsel *c2;
315
316 evlist__for_each_entry (evsel_list, c2) {
317 if (!strcasecmp(c2->name, name) && !c2->collect_stat)
318 return c2;
319 }
320 return NULL;
321}
322
323/* Mark MetricExpr target events and link events using them to them. */
324void perf_stat__collect_metric_expr(struct evlist *evsel_list)
325{
326 struct evsel *counter, *leader, **metric_events, *oc;
327 bool found;
328 const char **metric_names;
329 int i;
330 int num_metric_names;
331
332 evlist__for_each_entry(evsel_list, counter) {
333 bool invalid = false;
334
335 leader = counter->leader;
336 if (!counter->metric_expr)
337 continue;
338 metric_events = counter->metric_events;
339 if (!metric_events) {
340 if (expr__find_other(counter->metric_expr, counter->name,
341 &metric_names, &num_metric_names) < 0)
342 continue;
343
344 metric_events = calloc(sizeof(struct evsel *),
345 num_metric_names + 1);
346 if (!metric_events)
347 return;
348 counter->metric_events = metric_events;
349 }
350
351 for (i = 0; i < num_metric_names; i++) {
352 found = false;
353 if (leader) {
354 /* Search in group */
355 for_each_group_member (oc, leader) {
356 if (!strcasecmp(oc->name, metric_names[i]) &&
357 !oc->collect_stat) {
358 found = true;
359 break;
360 }
361 }
362 }
363 if (!found) {
364 /* Search ignoring groups */
365 oc = perf_stat__find_event(evsel_list, metric_names[i]);
366 }
367 if (!oc) {
368 /* Deduping one is good enough to handle duplicated PMUs. */
369 static char *printed;
370
371 /*
372 * Adding events automatically would be difficult, because
373 * it would risk creating groups that are not schedulable.
374 * perf stat doesn't understand all the scheduling constraints
375 * of events. So we ask the user instead to add the missing
376 * events.
377 */
378 if (!printed || strcasecmp(printed, metric_names[i])) {
379 fprintf(stderr,
380 "Add %s event to groups to get metric expression for %s\n",
381 metric_names[i],
382 counter->name);
383 printed = strdup(metric_names[i]);
384 }
385 invalid = true;
386 continue;
387 }
388 metric_events[i] = oc;
389 oc->collect_stat = true;
390 }
391 metric_events[i] = NULL;
392 free(metric_names);
393 if (invalid) {
394 free(metric_events);
395 counter->metric_events = NULL;
396 counter->metric_expr = NULL;
397 }
398 }
399}
400
401static double runtime_stat_avg(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 avg_stats(&v->stats);
411}
412
413static double runtime_stat_n(struct runtime_stat *st,
414 enum stat_type type, int ctx, int cpu)
415{
416 struct saved_value *v;
417
418 v = saved_value_lookup(NULL, cpu, false, type, ctx, st);
419 if (!v)
420 return 0.0;
421
422 return v->stats.n;
423}
424
425static void print_stalled_cycles_frontend(struct perf_stat_config *config,
426 int cpu,
427 struct evsel *evsel, double avg,
428 struct perf_stat_output_ctx *out,
429 struct runtime_stat *st)
430{
431 double total, ratio = 0.0;
432 const char *color;
433 int ctx = evsel_context(evsel);
434
435 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
436
437 if (total)
438 ratio = avg / total * 100.0;
439
440 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
441
442 if (ratio)
443 out->print_metric(config, out->ctx, color, "%7.2f%%", "frontend cycles idle",
444 ratio);
445 else
446 out->print_metric(config, out->ctx, NULL, NULL, "frontend cycles idle", 0);
447}
448
449static void print_stalled_cycles_backend(struct perf_stat_config *config,
450 int cpu,
451 struct evsel *evsel, double avg,
452 struct perf_stat_output_ctx *out,
453 struct runtime_stat *st)
454{
455 double total, ratio = 0.0;
456 const char *color;
457 int ctx = evsel_context(evsel);
458
459 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
460
461 if (total)
462 ratio = avg / total * 100.0;
463
464 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
465
466 out->print_metric(config, out->ctx, color, "%7.2f%%", "backend cycles idle", ratio);
467}
468
469static void print_branch_misses(struct perf_stat_config *config,
470 int cpu,
471 struct evsel *evsel,
472 double avg,
473 struct perf_stat_output_ctx *out,
474 struct runtime_stat *st)
475{
476 double total, ratio = 0.0;
477 const char *color;
478 int ctx = evsel_context(evsel);
479
480 total = runtime_stat_avg(st, STAT_BRANCHES, ctx, cpu);
481
482 if (total)
483 ratio = avg / total * 100.0;
484
485 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
486
487 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all branches", ratio);
488}
489
490static void print_l1_dcache_misses(struct perf_stat_config *config,
491 int cpu,
492 struct evsel *evsel,
493 double avg,
494 struct perf_stat_output_ctx *out,
495 struct runtime_stat *st)
496
497{
498 double total, ratio = 0.0;
499 const char *color;
500 int ctx = evsel_context(evsel);
501
502 total = runtime_stat_avg(st, STAT_L1_DCACHE, ctx, cpu);
503
504 if (total)
505 ratio = avg / total * 100.0;
506
507 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
508
509 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-dcache hits", ratio);
510}
511
512static void print_l1_icache_misses(struct perf_stat_config *config,
513 int cpu,
514 struct evsel *evsel,
515 double avg,
516 struct perf_stat_output_ctx *out,
517 struct runtime_stat *st)
518
519{
520 double total, ratio = 0.0;
521 const char *color;
522 int ctx = evsel_context(evsel);
523
524 total = runtime_stat_avg(st, STAT_L1_ICACHE, ctx, cpu);
525
526 if (total)
527 ratio = avg / total * 100.0;
528
529 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
530 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-icache hits", ratio);
531}
532
533static void print_dtlb_cache_misses(struct perf_stat_config *config,
534 int cpu,
535 struct evsel *evsel,
536 double avg,
537 struct perf_stat_output_ctx *out,
538 struct runtime_stat *st)
539{
540 double total, ratio = 0.0;
541 const char *color;
542 int ctx = evsel_context(evsel);
543
544 total = runtime_stat_avg(st, STAT_DTLB_CACHE, ctx, cpu);
545
546 if (total)
547 ratio = avg / total * 100.0;
548
549 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
550 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all dTLB cache hits", ratio);
551}
552
553static void print_itlb_cache_misses(struct perf_stat_config *config,
554 int cpu,
555 struct 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_ITLB_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(config, out->ctx, color, "%7.2f%%", "of all iTLB cache hits", ratio);
571}
572
573static void print_ll_cache_misses(struct perf_stat_config *config,
574 int cpu,
575 struct evsel *evsel,
576 double avg,
577 struct perf_stat_output_ctx *out,
578 struct runtime_stat *st)
579{
580 double total, ratio = 0.0;
581 const char *color;
582 int ctx = evsel_context(evsel);
583
584 total = runtime_stat_avg(st, STAT_LL_CACHE, ctx, cpu);
585
586 if (total)
587 ratio = avg / total * 100.0;
588
589 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
590 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all LL-cache hits", ratio);
591}
592
593/*
594 * High level "TopDown" CPU core pipe line bottleneck break down.
595 *
596 * Basic concept following
597 * Yasin, A Top Down Method for Performance analysis and Counter architecture
598 * ISPASS14
599 *
600 * The CPU pipeline is divided into 4 areas that can be bottlenecks:
601 *
602 * Frontend -> Backend -> Retiring
603 * BadSpeculation in addition means out of order execution that is thrown away
604 * (for example branch mispredictions)
605 * Frontend is instruction decoding.
606 * Backend is execution, like computation and accessing data in memory
607 * Retiring is good execution that is not directly bottlenecked
608 *
609 * The formulas are computed in slots.
610 * A slot is an entry in the pipeline each for the pipeline width
611 * (for example a 4-wide pipeline has 4 slots for each cycle)
612 *
613 * Formulas:
614 * BadSpeculation = ((SlotsIssued - SlotsRetired) + RecoveryBubbles) /
615 * TotalSlots
616 * Retiring = SlotsRetired / TotalSlots
617 * FrontendBound = FetchBubbles / TotalSlots
618 * BackendBound = 1.0 - BadSpeculation - Retiring - FrontendBound
619 *
620 * The kernel provides the mapping to the low level CPU events and any scaling
621 * needed for the CPU pipeline width, for example:
622 *
623 * TotalSlots = Cycles * 4
624 *
625 * The scaling factor is communicated in the sysfs unit.
626 *
627 * In some cases the CPU may not be able to measure all the formulas due to
628 * missing events. In this case multiple formulas are combined, as possible.
629 *
630 * Full TopDown supports more levels to sub-divide each area: for example
631 * BackendBound into computing bound and memory bound. For now we only
632 * support Level 1 TopDown.
633 */
634
635static double sanitize_val(double x)
636{
637 if (x < 0 && x >= -0.02)
638 return 0.0;
639 return x;
640}
641
642static double td_total_slots(int ctx, int cpu, struct runtime_stat *st)
643{
644 return runtime_stat_avg(st, STAT_TOPDOWN_TOTAL_SLOTS, ctx, cpu);
645}
646
647static double td_bad_spec(int ctx, int cpu, struct runtime_stat *st)
648{
649 double bad_spec = 0;
650 double total_slots;
651 double total;
652
653 total = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_ISSUED, ctx, cpu) -
654 runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED, ctx, cpu) +
655 runtime_stat_avg(st, STAT_TOPDOWN_RECOVERY_BUBBLES, ctx, cpu);
656
657 total_slots = td_total_slots(ctx, cpu, st);
658 if (total_slots)
659 bad_spec = total / total_slots;
660 return sanitize_val(bad_spec);
661}
662
663static double td_retiring(int ctx, int cpu, struct runtime_stat *st)
664{
665 double retiring = 0;
666 double total_slots = td_total_slots(ctx, cpu, st);
667 double ret_slots = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED,
668 ctx, cpu);
669
670 if (total_slots)
671 retiring = ret_slots / total_slots;
672 return retiring;
673}
674
675static double td_fe_bound(int ctx, int cpu, struct runtime_stat *st)
676{
677 double fe_bound = 0;
678 double total_slots = td_total_slots(ctx, cpu, st);
679 double fetch_bub = runtime_stat_avg(st, STAT_TOPDOWN_FETCH_BUBBLES,
680 ctx, cpu);
681
682 if (total_slots)
683 fe_bound = fetch_bub / total_slots;
684 return fe_bound;
685}
686
687static double td_be_bound(int ctx, int cpu, struct runtime_stat *st)
688{
689 double sum = (td_fe_bound(ctx, cpu, st) +
690 td_bad_spec(ctx, cpu, st) +
691 td_retiring(ctx, cpu, st));
692 if (sum == 0)
693 return 0;
694 return sanitize_val(1.0 - sum);
695}
696
697static void print_smi_cost(struct perf_stat_config *config,
698 int cpu, struct evsel *evsel,
699 struct perf_stat_output_ctx *out,
700 struct runtime_stat *st)
701{
702 double smi_num, aperf, cycles, cost = 0.0;
703 int ctx = evsel_context(evsel);
704 const char *color = NULL;
705
706 smi_num = runtime_stat_avg(st, STAT_SMI_NUM, ctx, cpu);
707 aperf = runtime_stat_avg(st, STAT_APERF, ctx, cpu);
708 cycles = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
709
710 if ((cycles == 0) || (aperf == 0))
711 return;
712
713 if (smi_num)
714 cost = (aperf - cycles) / aperf * 100.00;
715
716 if (cost > 10)
717 color = PERF_COLOR_RED;
718 out->print_metric(config, out->ctx, color, "%8.1f%%", "SMI cycles%", cost);
719 out->print_metric(config, out->ctx, NULL, "%4.0f", "SMI#", smi_num);
720}
721
722static void generic_metric(struct perf_stat_config *config,
723 const char *metric_expr,
724 struct evsel **metric_events,
725 char *name,
726 const char *metric_name,
727 const char *metric_unit,
728 double avg,
729 int cpu,
730 struct perf_stat_output_ctx *out,
731 struct runtime_stat *st)
732{
733 print_metric_t print_metric = out->print_metric;
734 struct parse_ctx pctx;
735 double ratio, scale;
736 int i;
737 void *ctxp = out->ctx;
738 char *n, *pn;
739
740 expr__ctx_init(&pctx);
741 /* Must be first id entry */
742 expr__add_id(&pctx, name, avg);
743 for (i = 0; metric_events[i]; i++) {
744 struct saved_value *v;
745 struct stats *stats;
746 u64 metric_total = 0;
747
748 if (!strcmp(metric_events[i]->name, "duration_time")) {
749 stats = &walltime_nsecs_stats;
750 scale = 1e-9;
751 } else {
752 v = saved_value_lookup(metric_events[i], cpu, false,
753 STAT_NONE, 0, st);
754 if (!v)
755 break;
756 stats = &v->stats;
757 scale = 1.0;
758
759 if (v->metric_other)
760 metric_total = v->metric_total;
761 }
762
763 n = strdup(metric_events[i]->name);
764 if (!n)
765 return;
766 /*
767 * This display code with --no-merge adds [cpu] postfixes.
768 * These are not supported by the parser. Remove everything
769 * after the space.
770 */
771 pn = strchr(n, ' ');
772 if (pn)
773 *pn = 0;
774
775 if (metric_total)
776 expr__add_id(&pctx, n, metric_total);
777 else
778 expr__add_id(&pctx, n, avg_stats(stats)*scale);
779 }
780
781 if (!metric_events[i]) {
782 const char *p = metric_expr;
783
784 if (expr__parse(&ratio, &pctx, &p) == 0) {
785 char *unit;
786 char metric_bf[64];
787
788 if (metric_unit && metric_name) {
789 if (perf_pmu__convert_scale(metric_unit,
790 &unit, &scale) >= 0) {
791 ratio *= scale;
792 }
793
794 scnprintf(metric_bf, sizeof(metric_bf),
795 "%s %s", unit, metric_name);
796 print_metric(config, ctxp, NULL, "%8.1f",
797 metric_bf, ratio);
798 } else {
799 print_metric(config, ctxp, NULL, "%8.1f",
800 metric_name ?
801 metric_name :
802 out->force_header ? name : "",
803 ratio);
804 }
805 } else {
806 print_metric(config, ctxp, NULL, NULL,
807 out->force_header ?
808 (metric_name ? metric_name : name) : "", 0);
809 }
810 } else
811 print_metric(config, ctxp, NULL, NULL, "", 0);
812
813 for (i = 1; i < pctx.num_ids; i++)
814 zfree(&pctx.ids[i].name);
815}
816
817void perf_stat__print_shadow_stats(struct perf_stat_config *config,
818 struct evsel *evsel,
819 double avg, int cpu,
820 struct perf_stat_output_ctx *out,
821 struct rblist *metric_events,
822 struct runtime_stat *st)
823{
824 void *ctxp = out->ctx;
825 print_metric_t print_metric = out->print_metric;
826 double total, ratio = 0.0, total2;
827 const char *color = NULL;
828 int ctx = evsel_context(evsel);
829 struct metric_event *me;
830 int num = 1;
831
832 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
833 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
834
835 if (total) {
836 ratio = avg / total;
837 print_metric(config, ctxp, NULL, "%7.2f ",
838 "insn per cycle", ratio);
839 } else {
840 print_metric(config, ctxp, NULL, NULL, "insn per cycle", 0);
841 }
842
843 total = runtime_stat_avg(st, STAT_STALLED_CYCLES_FRONT,
844 ctx, cpu);
845
846 total = max(total, runtime_stat_avg(st,
847 STAT_STALLED_CYCLES_BACK,
848 ctx, cpu));
849
850 if (total && avg) {
851 out->new_line(config, ctxp);
852 ratio = total / avg;
853 print_metric(config, ctxp, NULL, "%7.2f ",
854 "stalled cycles per insn",
855 ratio);
856 } else if (have_frontend_stalled) {
857 out->new_line(config, ctxp);
858 print_metric(config, ctxp, NULL, "%7.2f ",
859 "stalled cycles per insn", 0);
860 }
861 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) {
862 if (runtime_stat_n(st, STAT_BRANCHES, ctx, cpu) != 0)
863 print_branch_misses(config, cpu, evsel, avg, out, st);
864 else
865 print_metric(config, ctxp, NULL, NULL, "of all branches", 0);
866 } else if (
867 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
868 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_L1D |
869 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
870 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
871
872 if (runtime_stat_n(st, STAT_L1_DCACHE, ctx, cpu) != 0)
873 print_l1_dcache_misses(config, cpu, evsel, avg, out, st);
874 else
875 print_metric(config, ctxp, NULL, NULL, "of all L1-dcache hits", 0);
876 } else if (
877 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
878 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_L1I |
879 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
880 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
881
882 if (runtime_stat_n(st, STAT_L1_ICACHE, ctx, cpu) != 0)
883 print_l1_icache_misses(config, cpu, evsel, avg, out, st);
884 else
885 print_metric(config, ctxp, NULL, NULL, "of all L1-icache hits", 0);
886 } else if (
887 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
888 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
889 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
890 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
891
892 if (runtime_stat_n(st, STAT_DTLB_CACHE, ctx, cpu) != 0)
893 print_dtlb_cache_misses(config, cpu, evsel, avg, out, st);
894 else
895 print_metric(config, ctxp, NULL, NULL, "of all dTLB cache hits", 0);
896 } else if (
897 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
898 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
899 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
900 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
901
902 if (runtime_stat_n(st, STAT_ITLB_CACHE, ctx, cpu) != 0)
903 print_itlb_cache_misses(config, cpu, evsel, avg, out, st);
904 else
905 print_metric(config, ctxp, NULL, NULL, "of all iTLB cache hits", 0);
906 } else if (
907 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
908 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_LL |
909 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
910 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
911
912 if (runtime_stat_n(st, STAT_LL_CACHE, ctx, cpu) != 0)
913 print_ll_cache_misses(config, cpu, evsel, avg, out, st);
914 else
915 print_metric(config, ctxp, NULL, NULL, "of all LL-cache hits", 0);
916 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) {
917 total = runtime_stat_avg(st, STAT_CACHEREFS, ctx, cpu);
918
919 if (total)
920 ratio = avg * 100 / total;
921
922 if (runtime_stat_n(st, STAT_CACHEREFS, ctx, cpu) != 0)
923 print_metric(config, ctxp, NULL, "%8.3f %%",
924 "of all cache refs", ratio);
925 else
926 print_metric(config, ctxp, NULL, NULL, "of all cache refs", 0);
927 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
928 print_stalled_cycles_frontend(config, cpu, evsel, avg, out, st);
929 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
930 print_stalled_cycles_backend(config, cpu, evsel, avg, out, st);
931 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
932 total = runtime_stat_avg(st, STAT_NSECS, 0, cpu);
933
934 if (total) {
935 ratio = avg / total;
936 print_metric(config, ctxp, NULL, "%8.3f", "GHz", ratio);
937 } else {
938 print_metric(config, ctxp, NULL, NULL, "Ghz", 0);
939 }
940 } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX)) {
941 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
942
943 if (total)
944 print_metric(config, ctxp, NULL,
945 "%7.2f%%", "transactional cycles",
946 100.0 * (avg / total));
947 else
948 print_metric(config, ctxp, NULL, NULL, "transactional cycles",
949 0);
950 } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX_CP)) {
951 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
952 total2 = runtime_stat_avg(st, STAT_CYCLES_IN_TX, ctx, cpu);
953
954 if (total2 < avg)
955 total2 = avg;
956 if (total)
957 print_metric(config, ctxp, NULL, "%7.2f%%", "aborted cycles",
958 100.0 * ((total2-avg) / total));
959 else
960 print_metric(config, ctxp, NULL, NULL, "aborted cycles", 0);
961 } else if (perf_stat_evsel__is(evsel, TRANSACTION_START)) {
962 total = runtime_stat_avg(st, STAT_CYCLES_IN_TX,
963 ctx, cpu);
964
965 if (avg)
966 ratio = total / avg;
967
968 if (runtime_stat_n(st, STAT_CYCLES_IN_TX, ctx, cpu) != 0)
969 print_metric(config, ctxp, NULL, "%8.0f",
970 "cycles / transaction", ratio);
971 else
972 print_metric(config, ctxp, NULL, NULL, "cycles / transaction",
973 0);
974 } else if (perf_stat_evsel__is(evsel, ELISION_START)) {
975 total = runtime_stat_avg(st, STAT_CYCLES_IN_TX,
976 ctx, cpu);
977
978 if (avg)
979 ratio = total / avg;
980
981 print_metric(config, ctxp, NULL, "%8.0f", "cycles / elision", ratio);
982 } else if (perf_evsel__is_clock(evsel)) {
983 if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0)
984 print_metric(config, ctxp, NULL, "%8.3f", "CPUs utilized",
985 avg / (ratio * evsel->scale));
986 else
987 print_metric(config, ctxp, NULL, NULL, "CPUs utilized", 0);
988 } else if (perf_stat_evsel__is(evsel, TOPDOWN_FETCH_BUBBLES)) {
989 double fe_bound = td_fe_bound(ctx, cpu, st);
990
991 if (fe_bound > 0.2)
992 color = PERF_COLOR_RED;
993 print_metric(config, ctxp, color, "%8.1f%%", "frontend bound",
994 fe_bound * 100.);
995 } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_RETIRED)) {
996 double retiring = td_retiring(ctx, cpu, st);
997
998 if (retiring > 0.7)
999 color = PERF_COLOR_GREEN;
1000 print_metric(config, ctxp, color, "%8.1f%%", "retiring",
1001 retiring * 100.);
1002 } else if (perf_stat_evsel__is(evsel, TOPDOWN_RECOVERY_BUBBLES)) {
1003 double bad_spec = td_bad_spec(ctx, cpu, st);
1004
1005 if (bad_spec > 0.1)
1006 color = PERF_COLOR_RED;
1007 print_metric(config, ctxp, color, "%8.1f%%", "bad speculation",
1008 bad_spec * 100.);
1009 } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_ISSUED)) {
1010 double be_bound = td_be_bound(ctx, cpu, st);
1011 const char *name = "backend bound";
1012 static int have_recovery_bubbles = -1;
1013
1014 /* In case the CPU does not support topdown-recovery-bubbles */
1015 if (have_recovery_bubbles < 0)
1016 have_recovery_bubbles = pmu_have_event("cpu",
1017 "topdown-recovery-bubbles");
1018 if (!have_recovery_bubbles)
1019 name = "backend bound/bad spec";
1020
1021 if (be_bound > 0.2)
1022 color = PERF_COLOR_RED;
1023 if (td_total_slots(ctx, cpu, st) > 0)
1024 print_metric(config, ctxp, color, "%8.1f%%", name,
1025 be_bound * 100.);
1026 else
1027 print_metric(config, ctxp, NULL, NULL, name, 0);
1028 } else if (evsel->metric_expr) {
1029 generic_metric(config, evsel->metric_expr, evsel->metric_events, evsel->name,
1030 evsel->metric_name, NULL, avg, cpu, out, st);
1031 } else if (runtime_stat_n(st, STAT_NSECS, 0, cpu) != 0) {
1032 char unit = 'M';
1033 char unit_buf[10];
1034
1035 total = runtime_stat_avg(st, STAT_NSECS, 0, cpu);
1036
1037 if (total)
1038 ratio = 1000.0 * avg / total;
1039 if (ratio < 0.001) {
1040 ratio *= 1000;
1041 unit = 'K';
1042 }
1043 snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);
1044 print_metric(config, ctxp, NULL, "%8.3f", unit_buf, ratio);
1045 } else if (perf_stat_evsel__is(evsel, SMI_NUM)) {
1046 print_smi_cost(config, cpu, evsel, out, st);
1047 } else {
1048 num = 0;
1049 }
1050
1051 if ((me = metricgroup__lookup(metric_events, evsel, false)) != NULL) {
1052 struct metric_expr *mexp;
1053
1054 list_for_each_entry (mexp, &me->head, nd) {
1055 if (num++ > 0)
1056 out->new_line(config, ctxp);
1057 generic_metric(config, mexp->metric_expr, mexp->metric_events,
1058 evsel->name, mexp->metric_name,
1059 mexp->metric_unit, avg, cpu, out, st);
1060 }
1061 }
1062 if (num == 0)
1063 print_metric(config, ctxp, NULL, NULL, NULL, 0);
1064}