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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 <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 */
21
22struct runtime_stat rt_stat;
23struct stats walltime_nsecs_stats;
24
25struct saved_value {
26 struct rb_node rb_node;
27 struct evsel *evsel;
28 enum stat_type type;
29 int ctx;
30 int cpu;
31 struct runtime_stat *stat;
32 struct stats stats;
33 u64 metric_total;
34 int metric_other;
35};
36
37static int saved_value_cmp(struct rb_node *rb_node, const void *entry)
38{
39 struct saved_value *a = container_of(rb_node,
40 struct saved_value,
41 rb_node);
42 const struct saved_value *b = entry;
43
44 if (a->cpu != b->cpu)
45 return a->cpu - b->cpu;
46
47 /*
48 * Previously the rbtree was used to link generic metrics.
49 * The keys were evsel/cpu. Now the rbtree is extended to support
50 * per-thread shadow stats. For shadow stats case, the keys
51 * are cpu/type/ctx/stat (evsel is NULL). For generic metrics
52 * case, the keys are still evsel/cpu (type/ctx/stat are 0 or NULL).
53 */
54 if (a->type != b->type)
55 return a->type - b->type;
56
57 if (a->ctx != b->ctx)
58 return a->ctx - b->ctx;
59
60 if (a->evsel == NULL && b->evsel == NULL) {
61 if (a->stat == b->stat)
62 return 0;
63
64 if ((char *)a->stat < (char *)b->stat)
65 return -1;
66
67 return 1;
68 }
69
70 if (a->evsel == b->evsel)
71 return 0;
72 if ((char *)a->evsel < (char *)b->evsel)
73 return -1;
74 return +1;
75}
76
77static struct rb_node *saved_value_new(struct rblist *rblist __maybe_unused,
78 const void *entry)
79{
80 struct saved_value *nd = malloc(sizeof(struct saved_value));
81
82 if (!nd)
83 return NULL;
84 memcpy(nd, entry, sizeof(struct saved_value));
85 return &nd->rb_node;
86}
87
88static void saved_value_delete(struct rblist *rblist __maybe_unused,
89 struct rb_node *rb_node)
90{
91 struct saved_value *v;
92
93 BUG_ON(!rb_node);
94 v = container_of(rb_node, struct saved_value, rb_node);
95 free(v);
96}
97
98static struct saved_value *saved_value_lookup(struct evsel *evsel,
99 int cpu,
100 bool create,
101 enum stat_type type,
102 int ctx,
103 struct runtime_stat *st)
104{
105 struct rblist *rblist;
106 struct rb_node *nd;
107 struct saved_value dm = {
108 .cpu = cpu,
109 .evsel = evsel,
110 .type = type,
111 .ctx = ctx,
112 .stat = st,
113 };
114
115 rblist = &st->value_list;
116
117 nd = rblist__find(rblist, &dm);
118 if (nd)
119 return container_of(nd, struct saved_value, rb_node);
120 if (create) {
121 rblist__add_node(rblist, &dm);
122 nd = rblist__find(rblist, &dm);
123 if (nd)
124 return container_of(nd, struct saved_value, rb_node);
125 }
126 return NULL;
127}
128
129void runtime_stat__init(struct runtime_stat *st)
130{
131 struct rblist *rblist = &st->value_list;
132
133 rblist__init(rblist);
134 rblist->node_cmp = saved_value_cmp;
135 rblist->node_new = saved_value_new;
136 rblist->node_delete = saved_value_delete;
137}
138
139void runtime_stat__exit(struct runtime_stat *st)
140{
141 rblist__exit(&st->value_list);
142}
143
144void perf_stat__init_shadow_stats(void)
145{
146 runtime_stat__init(&rt_stat);
147}
148
149static int evsel_context(struct evsel *evsel)
150{
151 int ctx = 0;
152
153 if (evsel->core.attr.exclude_kernel)
154 ctx |= CTX_BIT_KERNEL;
155 if (evsel->core.attr.exclude_user)
156 ctx |= CTX_BIT_USER;
157 if (evsel->core.attr.exclude_hv)
158 ctx |= CTX_BIT_HV;
159 if (evsel->core.attr.exclude_host)
160 ctx |= CTX_BIT_HOST;
161 if (evsel->core.attr.exclude_idle)
162 ctx |= CTX_BIT_IDLE;
163
164 return ctx;
165}
166
167static void reset_stat(struct runtime_stat *st)
168{
169 struct rblist *rblist;
170 struct rb_node *pos, *next;
171
172 rblist = &st->value_list;
173 next = rb_first_cached(&rblist->entries);
174 while (next) {
175 pos = next;
176 next = rb_next(pos);
177 memset(&container_of(pos, struct saved_value, rb_node)->stats,
178 0,
179 sizeof(struct stats));
180 }
181}
182
183void perf_stat__reset_shadow_stats(void)
184{
185 reset_stat(&rt_stat);
186 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
187}
188
189void perf_stat__reset_shadow_per_stat(struct runtime_stat *st)
190{
191 reset_stat(st);
192}
193
194static void update_runtime_stat(struct runtime_stat *st,
195 enum stat_type type,
196 int ctx, int cpu, u64 count)
197{
198 struct saved_value *v = saved_value_lookup(NULL, cpu, true,
199 type, ctx, st);
200
201 if (v)
202 update_stats(&v->stats, count);
203}
204
205/*
206 * Update various tracking values we maintain to print
207 * more semantic information such as miss/hit ratios,
208 * instruction rates, etc:
209 */
210void perf_stat__update_shadow_stats(struct evsel *counter, u64 count,
211 int cpu, struct runtime_stat *st)
212{
213 int ctx = evsel_context(counter);
214 u64 count_ns = count;
215 struct saved_value *v;
216
217 count *= counter->scale;
218
219 if (evsel__is_clock(counter))
220 update_runtime_stat(st, STAT_NSECS, 0, cpu, count_ns);
221 else if (evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
222 update_runtime_stat(st, STAT_CYCLES, ctx, cpu, count);
223 else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
224 update_runtime_stat(st, STAT_CYCLES_IN_TX, ctx, cpu, count);
225 else if (perf_stat_evsel__is(counter, TRANSACTION_START))
226 update_runtime_stat(st, STAT_TRANSACTION, ctx, cpu, count);
227 else if (perf_stat_evsel__is(counter, ELISION_START))
228 update_runtime_stat(st, STAT_ELISION, ctx, cpu, count);
229 else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS))
230 update_runtime_stat(st, STAT_TOPDOWN_TOTAL_SLOTS,
231 ctx, cpu, count);
232 else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED))
233 update_runtime_stat(st, STAT_TOPDOWN_SLOTS_ISSUED,
234 ctx, cpu, count);
235 else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED))
236 update_runtime_stat(st, STAT_TOPDOWN_SLOTS_RETIRED,
237 ctx, cpu, count);
238 else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES))
239 update_runtime_stat(st, STAT_TOPDOWN_FETCH_BUBBLES,
240 ctx, cpu, count);
241 else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES))
242 update_runtime_stat(st, STAT_TOPDOWN_RECOVERY_BUBBLES,
243 ctx, cpu, count);
244 else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
245 update_runtime_stat(st, STAT_STALLED_CYCLES_FRONT,
246 ctx, cpu, count);
247 else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
248 update_runtime_stat(st, STAT_STALLED_CYCLES_BACK,
249 ctx, cpu, count);
250 else if (evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
251 update_runtime_stat(st, STAT_BRANCHES, ctx, cpu, count);
252 else if (evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
253 update_runtime_stat(st, STAT_CACHEREFS, ctx, cpu, count);
254 else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
255 update_runtime_stat(st, STAT_L1_DCACHE, ctx, cpu, count);
256 else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
257 update_runtime_stat(st, STAT_L1_ICACHE, ctx, cpu, count);
258 else if (evsel__match(counter, HW_CACHE, HW_CACHE_LL))
259 update_runtime_stat(st, STAT_LL_CACHE, ctx, cpu, count);
260 else if (evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
261 update_runtime_stat(st, STAT_DTLB_CACHE, ctx, cpu, count);
262 else if (evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
263 update_runtime_stat(st, STAT_ITLB_CACHE, ctx, cpu, count);
264 else if (perf_stat_evsel__is(counter, SMI_NUM))
265 update_runtime_stat(st, STAT_SMI_NUM, ctx, cpu, count);
266 else if (perf_stat_evsel__is(counter, APERF))
267 update_runtime_stat(st, STAT_APERF, ctx, cpu, count);
268
269 if (counter->collect_stat) {
270 v = saved_value_lookup(counter, cpu, true, STAT_NONE, 0, st);
271 update_stats(&v->stats, count);
272 if (counter->metric_leader)
273 v->metric_total += count;
274 } else if (counter->metric_leader) {
275 v = saved_value_lookup(counter->metric_leader,
276 cpu, true, STAT_NONE, 0, st);
277 v->metric_total += count;
278 v->metric_other++;
279 }
280}
281
282/* used for get_ratio_color() */
283enum grc_type {
284 GRC_STALLED_CYCLES_FE,
285 GRC_STALLED_CYCLES_BE,
286 GRC_CACHE_MISSES,
287 GRC_MAX_NR
288};
289
290static const char *get_ratio_color(enum grc_type type, double ratio)
291{
292 static const double grc_table[GRC_MAX_NR][3] = {
293 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
294 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
295 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
296 };
297 const char *color = PERF_COLOR_NORMAL;
298
299 if (ratio > grc_table[type][0])
300 color = PERF_COLOR_RED;
301 else if (ratio > grc_table[type][1])
302 color = PERF_COLOR_MAGENTA;
303 else if (ratio > grc_table[type][2])
304 color = PERF_COLOR_YELLOW;
305
306 return color;
307}
308
309static struct evsel *perf_stat__find_event(struct evlist *evsel_list,
310 const char *name)
311{
312 struct evsel *c2;
313
314 evlist__for_each_entry (evsel_list, c2) {
315 if (!strcasecmp(c2->name, name) && !c2->collect_stat)
316 return c2;
317 }
318 return NULL;
319}
320
321/* Mark MetricExpr target events and link events using them to them. */
322void perf_stat__collect_metric_expr(struct evlist *evsel_list)
323{
324 struct evsel *counter, *leader, **metric_events, *oc;
325 bool found;
326 struct expr_parse_ctx ctx;
327 struct hashmap_entry *cur;
328 size_t bkt;
329 int i;
330
331 expr__ctx_init(&ctx);
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
339 expr__ctx_clear(&ctx);
340 metric_events = counter->metric_events;
341 if (!metric_events) {
342 if (expr__find_other(counter->metric_expr,
343 counter->name,
344 &ctx, 1) < 0)
345 continue;
346
347 metric_events = calloc(sizeof(struct evsel *),
348 hashmap__size(&ctx.ids) + 1);
349 if (!metric_events) {
350 expr__ctx_clear(&ctx);
351 return;
352 }
353 counter->metric_events = metric_events;
354 }
355
356 i = 0;
357 hashmap__for_each_entry((&ctx.ids), cur, bkt) {
358 const char *metric_name = (const char *)cur->key;
359
360 found = false;
361 if (leader) {
362 /* Search in group */
363 for_each_group_member (oc, leader) {
364 if (!strcasecmp(oc->name,
365 metric_name) &&
366 !oc->collect_stat) {
367 found = true;
368 break;
369 }
370 }
371 }
372 if (!found) {
373 /* Search ignoring groups */
374 oc = perf_stat__find_event(evsel_list,
375 metric_name);
376 }
377 if (!oc) {
378 /* Deduping one is good enough to handle duplicated PMUs. */
379 static char *printed;
380
381 /*
382 * Adding events automatically would be difficult, because
383 * it would risk creating groups that are not schedulable.
384 * perf stat doesn't understand all the scheduling constraints
385 * of events. So we ask the user instead to add the missing
386 * events.
387 */
388 if (!printed ||
389 strcasecmp(printed, metric_name)) {
390 fprintf(stderr,
391 "Add %s event to groups to get metric expression for %s\n",
392 metric_name,
393 counter->name);
394 printed = strdup(metric_name);
395 }
396 invalid = true;
397 continue;
398 }
399 metric_events[i++] = oc;
400 oc->collect_stat = true;
401 }
402 metric_events[i] = NULL;
403 if (invalid) {
404 free(metric_events);
405 counter->metric_events = NULL;
406 counter->metric_expr = NULL;
407 }
408 }
409 expr__ctx_clear(&ctx);
410}
411
412static double runtime_stat_avg(struct runtime_stat *st,
413 enum stat_type type, int ctx, int cpu)
414{
415 struct saved_value *v;
416
417 v = saved_value_lookup(NULL, cpu, false, type, ctx, st);
418 if (!v)
419 return 0.0;
420
421 return avg_stats(&v->stats);
422}
423
424static double runtime_stat_n(struct runtime_stat *st,
425 enum stat_type type, int ctx, int cpu)
426{
427 struct saved_value *v;
428
429 v = saved_value_lookup(NULL, cpu, false, type, ctx, st);
430 if (!v)
431 return 0.0;
432
433 return v->stats.n;
434}
435
436static void print_stalled_cycles_frontend(struct perf_stat_config *config,
437 int cpu,
438 struct evsel *evsel, double avg,
439 struct perf_stat_output_ctx *out,
440 struct runtime_stat *st)
441{
442 double total, ratio = 0.0;
443 const char *color;
444 int ctx = evsel_context(evsel);
445
446 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
447
448 if (total)
449 ratio = avg / total * 100.0;
450
451 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
452
453 if (ratio)
454 out->print_metric(config, out->ctx, color, "%7.2f%%", "frontend cycles idle",
455 ratio);
456 else
457 out->print_metric(config, out->ctx, NULL, NULL, "frontend cycles idle", 0);
458}
459
460static void print_stalled_cycles_backend(struct perf_stat_config *config,
461 int cpu,
462 struct evsel *evsel, double avg,
463 struct perf_stat_output_ctx *out,
464 struct runtime_stat *st)
465{
466 double total, ratio = 0.0;
467 const char *color;
468 int ctx = evsel_context(evsel);
469
470 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
471
472 if (total)
473 ratio = avg / total * 100.0;
474
475 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
476
477 out->print_metric(config, out->ctx, color, "%7.2f%%", "backend cycles idle", ratio);
478}
479
480static void print_branch_misses(struct perf_stat_config *config,
481 int cpu,
482 struct evsel *evsel,
483 double avg,
484 struct perf_stat_output_ctx *out,
485 struct runtime_stat *st)
486{
487 double total, ratio = 0.0;
488 const char *color;
489 int ctx = evsel_context(evsel);
490
491 total = runtime_stat_avg(st, STAT_BRANCHES, ctx, cpu);
492
493 if (total)
494 ratio = avg / total * 100.0;
495
496 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
497
498 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all branches", ratio);
499}
500
501static void print_l1_dcache_misses(struct perf_stat_config *config,
502 int cpu,
503 struct evsel *evsel,
504 double avg,
505 struct perf_stat_output_ctx *out,
506 struct runtime_stat *st)
507
508{
509 double total, ratio = 0.0;
510 const char *color;
511 int ctx = evsel_context(evsel);
512
513 total = runtime_stat_avg(st, STAT_L1_DCACHE, ctx, cpu);
514
515 if (total)
516 ratio = avg / total * 100.0;
517
518 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
519
520 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-dcache accesses", ratio);
521}
522
523static void print_l1_icache_misses(struct perf_stat_config *config,
524 int cpu,
525 struct evsel *evsel,
526 double avg,
527 struct perf_stat_output_ctx *out,
528 struct runtime_stat *st)
529
530{
531 double total, ratio = 0.0;
532 const char *color;
533 int ctx = evsel_context(evsel);
534
535 total = runtime_stat_avg(st, STAT_L1_ICACHE, ctx, cpu);
536
537 if (total)
538 ratio = avg / total * 100.0;
539
540 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
541 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-icache accesses", ratio);
542}
543
544static void print_dtlb_cache_misses(struct perf_stat_config *config,
545 int cpu,
546 struct evsel *evsel,
547 double avg,
548 struct perf_stat_output_ctx *out,
549 struct runtime_stat *st)
550{
551 double total, ratio = 0.0;
552 const char *color;
553 int ctx = evsel_context(evsel);
554
555 total = runtime_stat_avg(st, STAT_DTLB_CACHE, ctx, cpu);
556
557 if (total)
558 ratio = avg / total * 100.0;
559
560 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
561 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all dTLB cache accesses", ratio);
562}
563
564static void print_itlb_cache_misses(struct perf_stat_config *config,
565 int cpu,
566 struct evsel *evsel,
567 double avg,
568 struct perf_stat_output_ctx *out,
569 struct runtime_stat *st)
570{
571 double total, ratio = 0.0;
572 const char *color;
573 int ctx = evsel_context(evsel);
574
575 total = runtime_stat_avg(st, STAT_ITLB_CACHE, ctx, cpu);
576
577 if (total)
578 ratio = avg / total * 100.0;
579
580 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
581 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all iTLB cache accesses", ratio);
582}
583
584static void print_ll_cache_misses(struct perf_stat_config *config,
585 int cpu,
586 struct evsel *evsel,
587 double avg,
588 struct perf_stat_output_ctx *out,
589 struct runtime_stat *st)
590{
591 double total, ratio = 0.0;
592 const char *color;
593 int ctx = evsel_context(evsel);
594
595 total = runtime_stat_avg(st, STAT_LL_CACHE, ctx, cpu);
596
597 if (total)
598 ratio = avg / total * 100.0;
599
600 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
601 out->print_metric(config, out->ctx, color, "%7.2f%%", "of all LL-cache accesses", ratio);
602}
603
604/*
605 * High level "TopDown" CPU core pipe line bottleneck break down.
606 *
607 * Basic concept following
608 * Yasin, A Top Down Method for Performance analysis and Counter architecture
609 * ISPASS14
610 *
611 * The CPU pipeline is divided into 4 areas that can be bottlenecks:
612 *
613 * Frontend -> Backend -> Retiring
614 * BadSpeculation in addition means out of order execution that is thrown away
615 * (for example branch mispredictions)
616 * Frontend is instruction decoding.
617 * Backend is execution, like computation and accessing data in memory
618 * Retiring is good execution that is not directly bottlenecked
619 *
620 * The formulas are computed in slots.
621 * A slot is an entry in the pipeline each for the pipeline width
622 * (for example a 4-wide pipeline has 4 slots for each cycle)
623 *
624 * Formulas:
625 * BadSpeculation = ((SlotsIssued - SlotsRetired) + RecoveryBubbles) /
626 * TotalSlots
627 * Retiring = SlotsRetired / TotalSlots
628 * FrontendBound = FetchBubbles / TotalSlots
629 * BackendBound = 1.0 - BadSpeculation - Retiring - FrontendBound
630 *
631 * The kernel provides the mapping to the low level CPU events and any scaling
632 * needed for the CPU pipeline width, for example:
633 *
634 * TotalSlots = Cycles * 4
635 *
636 * The scaling factor is communicated in the sysfs unit.
637 *
638 * In some cases the CPU may not be able to measure all the formulas due to
639 * missing events. In this case multiple formulas are combined, as possible.
640 *
641 * Full TopDown supports more levels to sub-divide each area: for example
642 * BackendBound into computing bound and memory bound. For now we only
643 * support Level 1 TopDown.
644 */
645
646static double sanitize_val(double x)
647{
648 if (x < 0 && x >= -0.02)
649 return 0.0;
650 return x;
651}
652
653static double td_total_slots(int ctx, int cpu, struct runtime_stat *st)
654{
655 return runtime_stat_avg(st, STAT_TOPDOWN_TOTAL_SLOTS, ctx, cpu);
656}
657
658static double td_bad_spec(int ctx, int cpu, struct runtime_stat *st)
659{
660 double bad_spec = 0;
661 double total_slots;
662 double total;
663
664 total = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_ISSUED, ctx, cpu) -
665 runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED, ctx, cpu) +
666 runtime_stat_avg(st, STAT_TOPDOWN_RECOVERY_BUBBLES, ctx, cpu);
667
668 total_slots = td_total_slots(ctx, cpu, st);
669 if (total_slots)
670 bad_spec = total / total_slots;
671 return sanitize_val(bad_spec);
672}
673
674static double td_retiring(int ctx, int cpu, struct runtime_stat *st)
675{
676 double retiring = 0;
677 double total_slots = td_total_slots(ctx, cpu, st);
678 double ret_slots = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED,
679 ctx, cpu);
680
681 if (total_slots)
682 retiring = ret_slots / total_slots;
683 return retiring;
684}
685
686static double td_fe_bound(int ctx, int cpu, struct runtime_stat *st)
687{
688 double fe_bound = 0;
689 double total_slots = td_total_slots(ctx, cpu, st);
690 double fetch_bub = runtime_stat_avg(st, STAT_TOPDOWN_FETCH_BUBBLES,
691 ctx, cpu);
692
693 if (total_slots)
694 fe_bound = fetch_bub / total_slots;
695 return fe_bound;
696}
697
698static double td_be_bound(int ctx, int cpu, struct runtime_stat *st)
699{
700 double sum = (td_fe_bound(ctx, cpu, st) +
701 td_bad_spec(ctx, cpu, st) +
702 td_retiring(ctx, cpu, st));
703 if (sum == 0)
704 return 0;
705 return sanitize_val(1.0 - sum);
706}
707
708static void print_smi_cost(struct perf_stat_config *config,
709 int cpu, struct evsel *evsel,
710 struct perf_stat_output_ctx *out,
711 struct runtime_stat *st)
712{
713 double smi_num, aperf, cycles, cost = 0.0;
714 int ctx = evsel_context(evsel);
715 const char *color = NULL;
716
717 smi_num = runtime_stat_avg(st, STAT_SMI_NUM, ctx, cpu);
718 aperf = runtime_stat_avg(st, STAT_APERF, ctx, cpu);
719 cycles = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
720
721 if ((cycles == 0) || (aperf == 0))
722 return;
723
724 if (smi_num)
725 cost = (aperf - cycles) / aperf * 100.00;
726
727 if (cost > 10)
728 color = PERF_COLOR_RED;
729 out->print_metric(config, out->ctx, color, "%8.1f%%", "SMI cycles%", cost);
730 out->print_metric(config, out->ctx, NULL, "%4.0f", "SMI#", smi_num);
731}
732
733static int prepare_metric(struct evsel **metric_events,
734 struct metric_ref *metric_refs,
735 struct expr_parse_ctx *pctx,
736 int cpu,
737 struct runtime_stat *st)
738{
739 double scale;
740 char *n, *pn;
741 int i, j, ret;
742
743 expr__ctx_init(pctx);
744 for (i = 0; metric_events[i]; i++) {
745 struct saved_value *v;
746 struct stats *stats;
747 u64 metric_total = 0;
748
749 if (!strcmp(metric_events[i]->name, "duration_time")) {
750 stats = &walltime_nsecs_stats;
751 scale = 1e-9;
752 } else {
753 v = saved_value_lookup(metric_events[i], cpu, false,
754 STAT_NONE, 0, st);
755 if (!v)
756 break;
757 stats = &v->stats;
758 scale = 1.0;
759
760 if (v->metric_other)
761 metric_total = v->metric_total;
762 }
763
764 n = strdup(metric_events[i]->name);
765 if (!n)
766 return -ENOMEM;
767 /*
768 * This display code with --no-merge adds [cpu] postfixes.
769 * These are not supported by the parser. Remove everything
770 * after the space.
771 */
772 pn = strchr(n, ' ');
773 if (pn)
774 *pn = 0;
775
776 if (metric_total)
777 expr__add_id_val(pctx, n, metric_total);
778 else
779 expr__add_id_val(pctx, n, avg_stats(stats)*scale);
780 }
781
782 for (j = 0; metric_refs && metric_refs[j].metric_name; j++) {
783 ret = expr__add_ref(pctx, &metric_refs[j]);
784 if (ret)
785 return ret;
786 }
787
788 return i;
789}
790
791static void generic_metric(struct perf_stat_config *config,
792 const char *metric_expr,
793 struct evsel **metric_events,
794 struct metric_ref *metric_refs,
795 char *name,
796 const char *metric_name,
797 const char *metric_unit,
798 int runtime,
799 int cpu,
800 struct perf_stat_output_ctx *out,
801 struct runtime_stat *st)
802{
803 print_metric_t print_metric = out->print_metric;
804 struct expr_parse_ctx pctx;
805 double ratio, scale;
806 int i;
807 void *ctxp = out->ctx;
808
809 i = prepare_metric(metric_events, metric_refs, &pctx, cpu, st);
810 if (i < 0)
811 return;
812
813 if (!metric_events[i]) {
814 if (expr__parse(&ratio, &pctx, metric_expr, runtime) == 0) {
815 char *unit;
816 char metric_bf[64];
817
818 if (metric_unit && metric_name) {
819 if (perf_pmu__convert_scale(metric_unit,
820 &unit, &scale) >= 0) {
821 ratio *= scale;
822 }
823 if (strstr(metric_expr, "?"))
824 scnprintf(metric_bf, sizeof(metric_bf),
825 "%s %s_%d", unit, metric_name, runtime);
826 else
827 scnprintf(metric_bf, sizeof(metric_bf),
828 "%s %s", unit, metric_name);
829
830 print_metric(config, ctxp, NULL, "%8.1f",
831 metric_bf, ratio);
832 } else {
833 print_metric(config, ctxp, NULL, "%8.2f",
834 metric_name ?
835 metric_name :
836 out->force_header ? name : "",
837 ratio);
838 }
839 } else {
840 print_metric(config, ctxp, NULL, NULL,
841 out->force_header ?
842 (metric_name ? metric_name : name) : "", 0);
843 }
844 } else {
845 print_metric(config, ctxp, NULL, NULL,
846 out->force_header ?
847 (metric_name ? metric_name : name) : "", 0);
848 }
849
850 expr__ctx_clear(&pctx);
851}
852
853double test_generic_metric(struct metric_expr *mexp, int cpu, struct runtime_stat *st)
854{
855 struct expr_parse_ctx pctx;
856 double ratio = 0.0;
857
858 if (prepare_metric(mexp->metric_events, mexp->metric_refs, &pctx, cpu, st) < 0)
859 goto out;
860
861 if (expr__parse(&ratio, &pctx, mexp->metric_expr, 1))
862 ratio = 0.0;
863
864out:
865 expr__ctx_clear(&pctx);
866 return ratio;
867}
868
869void perf_stat__print_shadow_stats(struct perf_stat_config *config,
870 struct evsel *evsel,
871 double avg, int cpu,
872 struct perf_stat_output_ctx *out,
873 struct rblist *metric_events,
874 struct runtime_stat *st)
875{
876 void *ctxp = out->ctx;
877 print_metric_t print_metric = out->print_metric;
878 double total, ratio = 0.0, total2;
879 const char *color = NULL;
880 int ctx = evsel_context(evsel);
881 struct metric_event *me;
882 int num = 1;
883
884 if (evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
885 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
886
887 if (total) {
888 ratio = avg / total;
889 print_metric(config, ctxp, NULL, "%7.2f ",
890 "insn per cycle", ratio);
891 } else {
892 print_metric(config, ctxp, NULL, NULL, "insn per cycle", 0);
893 }
894
895 total = runtime_stat_avg(st, STAT_STALLED_CYCLES_FRONT,
896 ctx, cpu);
897
898 total = max(total, runtime_stat_avg(st,
899 STAT_STALLED_CYCLES_BACK,
900 ctx, cpu));
901
902 if (total && avg) {
903 out->new_line(config, ctxp);
904 ratio = total / avg;
905 print_metric(config, ctxp, NULL, "%7.2f ",
906 "stalled cycles per insn",
907 ratio);
908 }
909 } else if (evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) {
910 if (runtime_stat_n(st, STAT_BRANCHES, ctx, cpu) != 0)
911 print_branch_misses(config, cpu, evsel, avg, out, st);
912 else
913 print_metric(config, ctxp, NULL, NULL, "of all branches", 0);
914 } else if (
915 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
916 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_L1D |
917 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
918 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
919
920 if (runtime_stat_n(st, STAT_L1_DCACHE, ctx, cpu) != 0)
921 print_l1_dcache_misses(config, cpu, evsel, avg, out, st);
922 else
923 print_metric(config, ctxp, NULL, NULL, "of all L1-dcache accesses", 0);
924 } else if (
925 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
926 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_L1I |
927 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
928 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
929
930 if (runtime_stat_n(st, STAT_L1_ICACHE, ctx, cpu) != 0)
931 print_l1_icache_misses(config, cpu, evsel, avg, out, st);
932 else
933 print_metric(config, ctxp, NULL, NULL, "of all L1-icache accesses", 0);
934 } else if (
935 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
936 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
937 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
938 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
939
940 if (runtime_stat_n(st, STAT_DTLB_CACHE, ctx, cpu) != 0)
941 print_dtlb_cache_misses(config, cpu, evsel, avg, out, st);
942 else
943 print_metric(config, ctxp, NULL, NULL, "of all dTLB cache accesses", 0);
944 } else if (
945 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
946 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
947 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
948 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
949
950 if (runtime_stat_n(st, STAT_ITLB_CACHE, ctx, cpu) != 0)
951 print_itlb_cache_misses(config, cpu, evsel, avg, out, st);
952 else
953 print_metric(config, ctxp, NULL, NULL, "of all iTLB cache accesses", 0);
954 } else if (
955 evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
956 evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_LL |
957 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
958 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
959
960 if (runtime_stat_n(st, STAT_LL_CACHE, ctx, cpu) != 0)
961 print_ll_cache_misses(config, cpu, evsel, avg, out, st);
962 else
963 print_metric(config, ctxp, NULL, NULL, "of all LL-cache accesses", 0);
964 } else if (evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) {
965 total = runtime_stat_avg(st, STAT_CACHEREFS, ctx, cpu);
966
967 if (total)
968 ratio = avg * 100 / total;
969
970 if (runtime_stat_n(st, STAT_CACHEREFS, ctx, cpu) != 0)
971 print_metric(config, ctxp, NULL, "%8.3f %%",
972 "of all cache refs", ratio);
973 else
974 print_metric(config, ctxp, NULL, NULL, "of all cache refs", 0);
975 } else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
976 print_stalled_cycles_frontend(config, cpu, evsel, avg, out, st);
977 } else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
978 print_stalled_cycles_backend(config, cpu, evsel, avg, out, st);
979 } else if (evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
980 total = runtime_stat_avg(st, STAT_NSECS, 0, cpu);
981
982 if (total) {
983 ratio = avg / total;
984 print_metric(config, ctxp, NULL, "%8.3f", "GHz", ratio);
985 } else {
986 print_metric(config, ctxp, NULL, NULL, "Ghz", 0);
987 }
988 } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX)) {
989 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
990
991 if (total)
992 print_metric(config, ctxp, NULL,
993 "%7.2f%%", "transactional cycles",
994 100.0 * (avg / total));
995 else
996 print_metric(config, ctxp, NULL, NULL, "transactional cycles",
997 0);
998 } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX_CP)) {
999 total = runtime_stat_avg(st, STAT_CYCLES, ctx, cpu);
1000 total2 = runtime_stat_avg(st, STAT_CYCLES_IN_TX, ctx, cpu);
1001
1002 if (total2 < avg)
1003 total2 = avg;
1004 if (total)
1005 print_metric(config, ctxp, NULL, "%7.2f%%", "aborted cycles",
1006 100.0 * ((total2-avg) / total));
1007 else
1008 print_metric(config, ctxp, NULL, NULL, "aborted cycles", 0);
1009 } else if (perf_stat_evsel__is(evsel, TRANSACTION_START)) {
1010 total = runtime_stat_avg(st, STAT_CYCLES_IN_TX,
1011 ctx, cpu);
1012
1013 if (avg)
1014 ratio = total / avg;
1015
1016 if (runtime_stat_n(st, STAT_CYCLES_IN_TX, ctx, cpu) != 0)
1017 print_metric(config, ctxp, NULL, "%8.0f",
1018 "cycles / transaction", ratio);
1019 else
1020 print_metric(config, ctxp, NULL, NULL, "cycles / transaction",
1021 0);
1022 } else if (perf_stat_evsel__is(evsel, ELISION_START)) {
1023 total = runtime_stat_avg(st, STAT_CYCLES_IN_TX,
1024 ctx, cpu);
1025
1026 if (avg)
1027 ratio = total / avg;
1028
1029 print_metric(config, ctxp, NULL, "%8.0f", "cycles / elision", ratio);
1030 } else if (evsel__is_clock(evsel)) {
1031 if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0)
1032 print_metric(config, ctxp, NULL, "%8.3f", "CPUs utilized",
1033 avg / (ratio * evsel->scale));
1034 else
1035 print_metric(config, ctxp, NULL, NULL, "CPUs utilized", 0);
1036 } else if (perf_stat_evsel__is(evsel, TOPDOWN_FETCH_BUBBLES)) {
1037 double fe_bound = td_fe_bound(ctx, cpu, st);
1038
1039 if (fe_bound > 0.2)
1040 color = PERF_COLOR_RED;
1041 print_metric(config, ctxp, color, "%8.1f%%", "frontend bound",
1042 fe_bound * 100.);
1043 } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_RETIRED)) {
1044 double retiring = td_retiring(ctx, cpu, st);
1045
1046 if (retiring > 0.7)
1047 color = PERF_COLOR_GREEN;
1048 print_metric(config, ctxp, color, "%8.1f%%", "retiring",
1049 retiring * 100.);
1050 } else if (perf_stat_evsel__is(evsel, TOPDOWN_RECOVERY_BUBBLES)) {
1051 double bad_spec = td_bad_spec(ctx, cpu, st);
1052
1053 if (bad_spec > 0.1)
1054 color = PERF_COLOR_RED;
1055 print_metric(config, ctxp, color, "%8.1f%%", "bad speculation",
1056 bad_spec * 100.);
1057 } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_ISSUED)) {
1058 double be_bound = td_be_bound(ctx, cpu, st);
1059 const char *name = "backend bound";
1060 static int have_recovery_bubbles = -1;
1061
1062 /* In case the CPU does not support topdown-recovery-bubbles */
1063 if (have_recovery_bubbles < 0)
1064 have_recovery_bubbles = pmu_have_event("cpu",
1065 "topdown-recovery-bubbles");
1066 if (!have_recovery_bubbles)
1067 name = "backend bound/bad spec";
1068
1069 if (be_bound > 0.2)
1070 color = PERF_COLOR_RED;
1071 if (td_total_slots(ctx, cpu, st) > 0)
1072 print_metric(config, ctxp, color, "%8.1f%%", name,
1073 be_bound * 100.);
1074 else
1075 print_metric(config, ctxp, NULL, NULL, name, 0);
1076 } else if (evsel->metric_expr) {
1077 generic_metric(config, evsel->metric_expr, evsel->metric_events, NULL,
1078 evsel->name, evsel->metric_name, NULL, 1, cpu, out, st);
1079 } else if (runtime_stat_n(st, STAT_NSECS, 0, cpu) != 0) {
1080 char unit = 'M';
1081 char unit_buf[10];
1082
1083 total = runtime_stat_avg(st, STAT_NSECS, 0, cpu);
1084
1085 if (total)
1086 ratio = 1000.0 * avg / total;
1087 if (ratio < 0.001) {
1088 ratio *= 1000;
1089 unit = 'K';
1090 }
1091 snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);
1092 print_metric(config, ctxp, NULL, "%8.3f", unit_buf, ratio);
1093 } else if (perf_stat_evsel__is(evsel, SMI_NUM)) {
1094 print_smi_cost(config, cpu, evsel, out, st);
1095 } else {
1096 num = 0;
1097 }
1098
1099 if ((me = metricgroup__lookup(metric_events, evsel, false)) != NULL) {
1100 struct metric_expr *mexp;
1101
1102 list_for_each_entry (mexp, &me->head, nd) {
1103 if (num++ > 0)
1104 out->new_line(config, ctxp);
1105 generic_metric(config, mexp->metric_expr, mexp->metric_events,
1106 mexp->metric_refs, evsel->name, mexp->metric_name,
1107 mexp->metric_unit, mexp->runtime, cpu, out, st);
1108 }
1109 }
1110 if (num == 0)
1111 print_metric(config, ctxp, NULL, NULL, NULL, 0);
1112}