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perf tools: Add perf_data_file__write function
[linux-2.6-block.git] / tools / perf / util / stat-shadow.c
CommitLineData
f87027b9
JO		 1#include <stdio.h>
2#include "evsel.h"
3#include "stat.h"
4#include "color.h"
fb4605ba 5#include "pmu.h"
37932c18
AK		 6#include "rblist.h"
7#include "evlist.h"
8#include "expr.h"
b18f3e36 9#include "metricgroup.h"
f87027b9
JO		 10
11enum {
12 CTX_BIT_USER = 1 << 0,
13 CTX_BIT_KERNEL = 1 << 1,
14 CTX_BIT_HV = 1 << 2,
15 CTX_BIT_HOST = 1 << 3,
16 CTX_BIT_IDLE = 1 << 4,
17 CTX_BIT_MAX = 1 << 5,
18};
19
20#define NUM_CTX CTX_BIT_MAX
21
44d49a60
AK		 22/*
23 * AGGR_GLOBAL: Use CPU 0
24 * AGGR_SOCKET: Use first CPU of socket
25 * AGGR_CORE: Use first CPU of core
26 * AGGR_NONE: Use matching CPU
27 * AGGR_THREAD: Not supported?
28 */
f87027b9
JO		 29static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
30static struct stats runtime_cycles_stats[NUM_CTX][MAX_NR_CPUS];
31static struct stats runtime_stalled_cycles_front_stats[NUM_CTX][MAX_NR_CPUS];
32static struct stats runtime_stalled_cycles_back_stats[NUM_CTX][MAX_NR_CPUS];
33static struct stats runtime_branches_stats[NUM_CTX][MAX_NR_CPUS];
34static struct stats runtime_cacherefs_stats[NUM_CTX][MAX_NR_CPUS];
35static struct stats runtime_l1_dcache_stats[NUM_CTX][MAX_NR_CPUS];
36static struct stats runtime_l1_icache_stats[NUM_CTX][MAX_NR_CPUS];
37static struct stats runtime_ll_cache_stats[NUM_CTX][MAX_NR_CPUS];
38static struct stats runtime_itlb_cache_stats[NUM_CTX][MAX_NR_CPUS];
39static struct stats runtime_dtlb_cache_stats[NUM_CTX][MAX_NR_CPUS];
40static struct stats runtime_cycles_in_tx_stats[NUM_CTX][MAX_NR_CPUS];
41static struct stats runtime_transaction_stats[NUM_CTX][MAX_NR_CPUS];
42static struct stats runtime_elision_stats[NUM_CTX][MAX_NR_CPUS];
239bd47f
AK		 43static struct stats runtime_topdown_total_slots[NUM_CTX][MAX_NR_CPUS];
44static struct stats runtime_topdown_slots_issued[NUM_CTX][MAX_NR_CPUS];
45static struct stats runtime_topdown_slots_retired[NUM_CTX][MAX_NR_CPUS];
46static struct stats runtime_topdown_fetch_bubbles[NUM_CTX][MAX_NR_CPUS];
47static struct stats runtime_topdown_recovery_bubbles[NUM_CTX][MAX_NR_CPUS];
daefd0bc
KL		 48static struct stats runtime_smi_num_stats[NUM_CTX][MAX_NR_CPUS];
49static struct stats runtime_aperf_stats[NUM_CTX][MAX_NR_CPUS];
37932c18 50static struct rblist runtime_saved_values;
fb4605ba 51static bool have_frontend_stalled;
f87027b9
JO		 52
53struct stats walltime_nsecs_stats;
54
37932c18
AK		 55struct saved_value {
56 struct rb_node rb_node;
57 struct perf_evsel *evsel;
58 int cpu;
37932c18
AK		 59 struct stats stats;
60};
61
62static int saved_value_cmp(struct rb_node *rb_node, const void *entry)
63{
64 struct saved_value *a = container_of(rb_node,
65 struct saved_value,
66 rb_node);
67 const struct saved_value *b = entry;
68
37932c18
AK		 69 if (a->cpu != b->cpu)
70 return a->cpu - b->cpu;
5e97665f
AK		 71 if (a->evsel == b->evsel)
72 return 0;
73 if ((char *)a->evsel < (char *)b->evsel)
74 return -1;
75 return +1;
37932c18
AK		 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 struct saved_value *saved_value_lookup(struct perf_evsel *evsel,
4e1a0963 90 int cpu,
37932c18
AK		 91 bool create)
92{
93 struct rb_node *nd;
94 struct saved_value dm = {
95 .cpu = cpu,
37932c18
AK		 96 .evsel = evsel,
97 };
98 nd = rblist__find(&runtime_saved_values, &dm);
99 if (nd)
100 return container_of(nd, struct saved_value, rb_node);
101 if (create) {
102 rblist__add_node(&runtime_saved_values, &dm);
103 nd = rblist__find(&runtime_saved_values, &dm);
104 if (nd)
105 return container_of(nd, struct saved_value, rb_node);
106 }
107 return NULL;
108}
109
fb4605ba
AK		 110void perf_stat__init_shadow_stats(void)
111{
112 have_frontend_stalled = pmu_have_event("cpu", "stalled-cycles-frontend");
37932c18
AK		 113 rblist__init(&runtime_saved_values);
114 runtime_saved_values.node_cmp = saved_value_cmp;
115 runtime_saved_values.node_new = saved_value_new;
116 /* No delete for now */
fb4605ba
AK		 117}
118
f87027b9
JO		 119static int evsel_context(struct perf_evsel *evsel)
120{
121 int ctx = 0;
122
123 if (evsel->attr.exclude_kernel)
124 ctx |= CTX_BIT_KERNEL;
125 if (evsel->attr.exclude_user)
126 ctx |= CTX_BIT_USER;
127 if (evsel->attr.exclude_hv)
128 ctx |= CTX_BIT_HV;
129 if (evsel->attr.exclude_host)
130 ctx |= CTX_BIT_HOST;
131 if (evsel->attr.exclude_idle)
132 ctx |= CTX_BIT_IDLE;
133
134 return ctx;
135}
136
137void perf_stat__reset_shadow_stats(void)
138{
37932c18
AK		 139 struct rb_node *pos, *next;
140
f87027b9
JO		 141 memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
142 memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
143 memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
144 memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
145 memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
146 memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
147 memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
148 memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
149 memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
150 memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
151 memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
152 memset(runtime_cycles_in_tx_stats, 0,
153 sizeof(runtime_cycles_in_tx_stats));
154 memset(runtime_transaction_stats, 0,
155 sizeof(runtime_transaction_stats));
156 memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
157 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
239bd47f
AK		 158 memset(runtime_topdown_total_slots, 0, sizeof(runtime_topdown_total_slots));
159 memset(runtime_topdown_slots_retired, 0, sizeof(runtime_topdown_slots_retired));
160 memset(runtime_topdown_slots_issued, 0, sizeof(runtime_topdown_slots_issued));
161 memset(runtime_topdown_fetch_bubbles, 0, sizeof(runtime_topdown_fetch_bubbles));
162 memset(runtime_topdown_recovery_bubbles, 0, sizeof(runtime_topdown_recovery_bubbles));
daefd0bc
KL		 163 memset(runtime_smi_num_stats, 0, sizeof(runtime_smi_num_stats));
164 memset(runtime_aperf_stats, 0, sizeof(runtime_aperf_stats));
37932c18
AK		 165
166 next = rb_first(&runtime_saved_values.entries);
167 while (next) {
168 pos = next;
169 next = rb_next(pos);
170 memset(&container_of(pos, struct saved_value, rb_node)->stats,
171 0,
172 sizeof(struct stats));
173 }
f87027b9
JO		 174}
175
176/*
177 * Update various tracking values we maintain to print
178 * more semantic information such as miss/hit ratios,
179 * instruction rates, etc:
180 */
181void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
182 int cpu)
183{
184 int ctx = evsel_context(counter);
185
daf4f478
NK		 186 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK) ||
187 perf_evsel__match(counter, SOFTWARE, SW_CPU_CLOCK))
f87027b9
JO		 188 update_stats(&runtime_nsecs_stats[cpu], count[0]);
189 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
190 update_stats(&runtime_cycles_stats[ctx][cpu], count[0]);
191 else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
54976285 192 update_stats(&runtime_cycles_in_tx_stats[ctx][cpu], count[0]);
f87027b9
JO		 193 else if (perf_stat_evsel__is(counter, TRANSACTION_START))
194 update_stats(&runtime_transaction_stats[ctx][cpu], count[0]);
195 else if (perf_stat_evsel__is(counter, ELISION_START))
196 update_stats(&runtime_elision_stats[ctx][cpu], count[0]);
239bd47f
AK		 197 else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS))
198 update_stats(&runtime_topdown_total_slots[ctx][cpu], count[0]);
199 else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED))
200 update_stats(&runtime_topdown_slots_issued[ctx][cpu], count[0]);
201 else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED))
202 update_stats(&runtime_topdown_slots_retired[ctx][cpu], count[0]);
203 else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES))
204 update_stats(&runtime_topdown_fetch_bubbles[ctx][cpu],count[0]);
205 else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES))
206 update_stats(&runtime_topdown_recovery_bubbles[ctx][cpu], count[0]);
f87027b9
JO		 207 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
208 update_stats(&runtime_stalled_cycles_front_stats[ctx][cpu], count[0]);
209 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
210 update_stats(&runtime_stalled_cycles_back_stats[ctx][cpu], count[0]);
211 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
212 update_stats(&runtime_branches_stats[ctx][cpu], count[0]);
213 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
214 update_stats(&runtime_cacherefs_stats[ctx][cpu], count[0]);
215 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
216 update_stats(&runtime_l1_dcache_stats[ctx][cpu], count[0]);
217 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
218 update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]);
219 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
220 update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]);
221 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
222 update_stats(&runtime_dtlb_cache_stats[ctx][cpu], count[0]);
223 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
224 update_stats(&runtime_itlb_cache_stats[ctx][cpu], count[0]);
daefd0bc
KL		 225 else if (perf_stat_evsel__is(counter, SMI_NUM))
226 update_stats(&runtime_smi_num_stats[ctx][cpu], count[0]);
227 else if (perf_stat_evsel__is(counter, APERF))
228 update_stats(&runtime_aperf_stats[ctx][cpu], count[0]);
37932c18
AK		 229
230 if (counter->collect_stat) {
4e1a0963 231 struct saved_value *v = saved_value_lookup(counter, cpu, true);
37932c18
AK		 232 update_stats(&v->stats, count[0]);
233 }
f87027b9
JO		 234}
235
236/* used for get_ratio_color() */
237enum grc_type {
238 GRC_STALLED_CYCLES_FE,
239 GRC_STALLED_CYCLES_BE,
240 GRC_CACHE_MISSES,
241 GRC_MAX_NR
242};
243
244static const char *get_ratio_color(enum grc_type type, double ratio)
245{
246 static const double grc_table[GRC_MAX_NR][3] = {
247 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
248 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
249 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
250 };
251 const char *color = PERF_COLOR_NORMAL;
252
253 if (ratio > grc_table[type][0])
254 color = PERF_COLOR_RED;
255 else if (ratio > grc_table[type][1])
256 color = PERF_COLOR_MAGENTA;
257 else if (ratio > grc_table[type][2])
258 color = PERF_COLOR_YELLOW;
259
260 return color;
261}
262
37932c18
AK		 263static struct perf_evsel *perf_stat__find_event(struct perf_evlist *evsel_list,
264 const char *name)
265{
266 struct perf_evsel *c2;
267
268 evlist__for_each_entry (evsel_list, c2) {
269 if (!strcasecmp(c2->name, name))
270 return c2;
271 }
272 return NULL;
273}
274
275/* Mark MetricExpr target events and link events using them to them. */
276void perf_stat__collect_metric_expr(struct perf_evlist *evsel_list)
277{
278 struct perf_evsel *counter, *leader, **metric_events, *oc;
279 bool found;
280 const char **metric_names;
281 int i;
282 int num_metric_names;
283
284 evlist__for_each_entry(evsel_list, counter) {
285 bool invalid = false;
286
287 leader = counter->leader;
288 if (!counter->metric_expr)
289 continue;
290 metric_events = counter->metric_events;
291 if (!metric_events) {
292 if (expr__find_other(counter->metric_expr, counter->name,
293 &metric_names, &num_metric_names) < 0)
294 continue;
295
296 metric_events = calloc(sizeof(struct perf_evsel *),
297 num_metric_names + 1);
298 if (!metric_events)
299 return;
300 counter->metric_events = metric_events;
301 }
302
303 for (i = 0; i < num_metric_names; i++) {
304 found = false;
305 if (leader) {
306 /* Search in group */
307 for_each_group_member (oc, leader) {
308 if (!strcasecmp(oc->name, metric_names[i])) {
309 found = true;
310 break;
311 }
312 }
313 }
314 if (!found) {
315 /* Search ignoring groups */
316 oc = perf_stat__find_event(evsel_list, metric_names[i]);
317 }
318 if (!oc) {
319 /* Deduping one is good enough to handle duplicated PMUs. */
320 static char *printed;
321
322 /*
323 * Adding events automatically would be difficult, because
324 * it would risk creating groups that are not schedulable.
325 * perf stat doesn't understand all the scheduling constraints
326 * of events. So we ask the user instead to add the missing
327 * events.
328 */
329 if (!printed || strcasecmp(printed, metric_names[i])) {
330 fprintf(stderr,
331 "Add %s event to groups to get metric expression for %s\n",
332 metric_names[i],
333 counter->name);
334 printed = strdup(metric_names[i]);
335 }
336 invalid = true;
337 continue;
338 }
339 metric_events[i] = oc;
340 oc->collect_stat = true;
341 }
342 metric_events[i] = NULL;
343 free(metric_names);
344 if (invalid) {
345 free(metric_events);
346 counter->metric_events = NULL;
347 counter->metric_expr = NULL;
348 }
349 }
350}
351
140aeadc 352static void print_stalled_cycles_frontend(int cpu,
b8f8eb84 353 struct perf_evsel *evsel, double avg,
140aeadc 354 struct perf_stat_output_ctx *out)
f87027b9
JO		 355{
356 double total, ratio = 0.0;
357 const char *color;
358 int ctx = evsel_context(evsel);
359
360 total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
361
362 if (total)
363 ratio = avg / total * 100.0;
364
365 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
366
140aeadc
AK		 367 if (ratio)
368 out->print_metric(out->ctx, color, "%7.2f%%", "frontend cycles idle",
369 ratio);
370 else
371 out->print_metric(out->ctx, NULL, NULL, "frontend cycles idle", 0);
f87027b9
JO		 372}
373
140aeadc 374static void print_stalled_cycles_backend(int cpu,
b8f8eb84 375 struct perf_evsel *evsel, double avg,
140aeadc 376 struct perf_stat_output_ctx *out)
f87027b9
JO		 377{
378 double total, ratio = 0.0;
379 const char *color;
380 int ctx = evsel_context(evsel);
381
382 total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
383
384 if (total)
385 ratio = avg / total * 100.0;
386
387 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
388
b0404be8 389 out->print_metric(out->ctx, color, "%7.2f%%", "backend cycles idle", ratio);
f87027b9
JO		 390}
391
140aeadc 392static void print_branch_misses(int cpu,
b8f8eb84 393 struct perf_evsel *evsel,
140aeadc
AK		 394 double avg,
395 struct perf_stat_output_ctx *out)
f87027b9
JO		 396{
397 double total, ratio = 0.0;
398 const char *color;
399 int ctx = evsel_context(evsel);
400
401 total = avg_stats(&runtime_branches_stats[ctx][cpu]);
402
403 if (total)
404 ratio = avg / total * 100.0;
405
406 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
407
140aeadc 408 out->print_metric(out->ctx, color, "%7.2f%%", "of all branches", ratio);
f87027b9
JO		 409}
410
140aeadc 411static void print_l1_dcache_misses(int cpu,
b8f8eb84 412 struct perf_evsel *evsel,
140aeadc
AK		 413 double avg,
414 struct perf_stat_output_ctx *out)
f87027b9
JO		 415{
416 double total, ratio = 0.0;
417 const char *color;
418 int ctx = evsel_context(evsel);
419
420 total = avg_stats(&runtime_l1_dcache_stats[ctx][cpu]);
421
422 if (total)
423 ratio = avg / total * 100.0;
424
425 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
426
140aeadc 427 out->print_metric(out->ctx, color, "%7.2f%%", "of all L1-dcache hits", ratio);
f87027b9
JO		 428}
429
140aeadc 430static void print_l1_icache_misses(int cpu,
b8f8eb84 431 struct perf_evsel *evsel,
140aeadc
AK		 432 double avg,
433 struct perf_stat_output_ctx *out)
f87027b9
JO		 434{
435 double total, ratio = 0.0;
436 const char *color;
437 int ctx = evsel_context(evsel);
438
439 total = avg_stats(&runtime_l1_icache_stats[ctx][cpu]);
440
441 if (total)
442 ratio = avg / total * 100.0;
443
444 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
140aeadc 445 out->print_metric(out->ctx, color, "%7.2f%%", "of all L1-icache hits", ratio);
f87027b9
JO		 446}
447
140aeadc 448static void print_dtlb_cache_misses(int cpu,
b8f8eb84 449 struct perf_evsel *evsel,
140aeadc
AK		 450 double avg,
451 struct perf_stat_output_ctx *out)
f87027b9
JO		 452{
453 double total, ratio = 0.0;
454 const char *color;
455 int ctx = evsel_context(evsel);
456
457 total = avg_stats(&runtime_dtlb_cache_stats[ctx][cpu]);
458
459 if (total)
460 ratio = avg / total * 100.0;
461
462 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
140aeadc 463 out->print_metric(out->ctx, color, "%7.2f%%", "of all dTLB cache hits", ratio);
f87027b9
JO		 464}
465
140aeadc 466static void print_itlb_cache_misses(int cpu,
b8f8eb84 467 struct perf_evsel *evsel,
140aeadc
AK		 468 double avg,
469 struct perf_stat_output_ctx *out)
f87027b9
JO		 470{
471 double total, ratio = 0.0;
472 const char *color;
473 int ctx = evsel_context(evsel);
474
475 total = avg_stats(&runtime_itlb_cache_stats[ctx][cpu]);
476
477 if (total)
478 ratio = avg / total * 100.0;
479
480 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
140aeadc 481 out->print_metric(out->ctx, color, "%7.2f%%", "of all iTLB cache hits", ratio);
f87027b9
JO		 482}
483
140aeadc 484static void print_ll_cache_misses(int cpu,
b8f8eb84 485 struct perf_evsel *evsel,
140aeadc
AK		 486 double avg,
487 struct perf_stat_output_ctx *out)
f87027b9
JO		 488{
489 double total, ratio = 0.0;
490 const char *color;
491 int ctx = evsel_context(evsel);
492
493 total = avg_stats(&runtime_ll_cache_stats[ctx][cpu]);
494
495 if (total)
496 ratio = avg / total * 100.0;
497
498 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
140aeadc 499 out->print_metric(out->ctx, color, "%7.2f%%", "of all LL-cache hits", ratio);
f87027b9
JO		 500}
501
239bd47f
AK		 502/*
503 * High level "TopDown" CPU core pipe line bottleneck break down.
504 *
505 * Basic concept following
506 * Yasin, A Top Down Method for Performance analysis and Counter architecture
507 * ISPASS14
508 *
509 * The CPU pipeline is divided into 4 areas that can be bottlenecks:
510 *
511 * Frontend -> Backend -> Retiring
512 * BadSpeculation in addition means out of order execution that is thrown away
513 * (for example branch mispredictions)
514 * Frontend is instruction decoding.
515 * Backend is execution, like computation and accessing data in memory
516 * Retiring is good execution that is not directly bottlenecked
517 *
518 * The formulas are computed in slots.
519 * A slot is an entry in the pipeline each for the pipeline width
520 * (for example a 4-wide pipeline has 4 slots for each cycle)
521 *
522 * Formulas:
523 * BadSpeculation = ((SlotsIssued - SlotsRetired) + RecoveryBubbles) /
524 * TotalSlots
525 * Retiring = SlotsRetired / TotalSlots
526 * FrontendBound = FetchBubbles / TotalSlots
527 * BackendBound = 1.0 - BadSpeculation - Retiring - FrontendBound
528 *
529 * The kernel provides the mapping to the low level CPU events and any scaling
530 * needed for the CPU pipeline width, for example:
531 *
532 * TotalSlots = Cycles * 4
533 *
534 * The scaling factor is communicated in the sysfs unit.
535 *
536 * In some cases the CPU may not be able to measure all the formulas due to
537 * missing events. In this case multiple formulas are combined, as possible.
538 *
539 * Full TopDown supports more levels to sub-divide each area: for example
540 * BackendBound into computing bound and memory bound. For now we only
541 * support Level 1 TopDown.
542 */
543
544static double sanitize_val(double x)
545{
546 if (x < 0 && x >= -0.02)
547 return 0.0;
548 return x;
549}
550
551static double td_total_slots(int ctx, int cpu)
552{
553 return avg_stats(&runtime_topdown_total_slots[ctx][cpu]);
554}
555
556static double td_bad_spec(int ctx, int cpu)
557{
558 double bad_spec = 0;
559 double total_slots;
560 double total;
561
562 total = avg_stats(&runtime_topdown_slots_issued[ctx][cpu]) -
563 avg_stats(&runtime_topdown_slots_retired[ctx][cpu]) +
564 avg_stats(&runtime_topdown_recovery_bubbles[ctx][cpu]);
565 total_slots = td_total_slots(ctx, cpu);
566 if (total_slots)
567 bad_spec = total / total_slots;
568 return sanitize_val(bad_spec);
569}
570
571static double td_retiring(int ctx, int cpu)
572{
573 double retiring = 0;
574 double total_slots = td_total_slots(ctx, cpu);
575 double ret_slots = avg_stats(&runtime_topdown_slots_retired[ctx][cpu]);
576
577 if (total_slots)
578 retiring = ret_slots / total_slots;
579 return retiring;
580}
581
582static double td_fe_bound(int ctx, int cpu)
583{
584 double fe_bound = 0;
585 double total_slots = td_total_slots(ctx, cpu);
586 double fetch_bub = avg_stats(&runtime_topdown_fetch_bubbles[ctx][cpu]);
587
588 if (total_slots)
589 fe_bound = fetch_bub / total_slots;
590 return fe_bound;
591}
592
593static double td_be_bound(int ctx, int cpu)
594{
595 double sum = (td_fe_bound(ctx, cpu) +
596 td_bad_spec(ctx, cpu) +
597 td_retiring(ctx, cpu));
598 if (sum == 0)
599 return 0;
600 return sanitize_val(1.0 - sum);
601}
602
daefd0bc
KL		 603static void print_smi_cost(int cpu, struct perf_evsel *evsel,
604 struct perf_stat_output_ctx *out)
605{
606 double smi_num, aperf, cycles, cost = 0.0;
607 int ctx = evsel_context(evsel);
608 const char *color = NULL;
609
610 smi_num = avg_stats(&runtime_smi_num_stats[ctx][cpu]);
611 aperf = avg_stats(&runtime_aperf_stats[ctx][cpu]);
612 cycles = avg_stats(&runtime_cycles_stats[ctx][cpu]);
613
614 if ((cycles == 0) || (aperf == 0))
615 return;
616
617 if (smi_num)
618 cost = (aperf - cycles) / aperf * 100.00;
619
620 if (cost > 10)
621 color = PERF_COLOR_RED;
622 out->print_metric(out->ctx, color, "%8.1f%%", "SMI cycles%", cost);
623 out->print_metric(out->ctx, NULL, "%4.0f", "SMI#", smi_num);
624}
625
bba49af8
AK		 626static void generic_metric(const char *metric_expr,
627 struct perf_evsel **metric_events,
628 char *name,
629 const char *metric_name,
630 double avg,
631 int cpu,
bba49af8
AK		 632 struct perf_stat_output_ctx *out)
633{
634 print_metric_t print_metric = out->print_metric;
635 struct parse_ctx pctx;
636 double ratio;
637 int i;
638 void *ctxp = out->ctx;
639
640 expr__ctx_init(&pctx);
641 expr__add_id(&pctx, name, avg);
642 for (i = 0; metric_events[i]; i++) {
643 struct saved_value *v;
fd48aad9
AK		 644 struct stats *stats;
645 double scale;
646
647 if (!strcmp(metric_events[i]->name, "duration_time")) {
648 stats = &walltime_nsecs_stats;
649 scale = 1e-9;
650 } else {
651 v = saved_value_lookup(metric_events[i], cpu, false);
652 if (!v)
653 break;
654 stats = &v->stats;
655 scale = 1.0;
656 }
657 expr__add_id(&pctx, metric_events[i]->name, avg_stats(stats)*scale);
bba49af8
AK		 658 }
659 if (!metric_events[i]) {
660 const char *p = metric_expr;
661
662 if (expr__parse(&ratio, &pctx, &p) == 0)
663 print_metric(ctxp, NULL, "%8.1f",
664 metric_name ?
665 metric_name :
666 out->force_header ? name : "",
667 ratio);
668 else
4ed962eb
AK		 669 print_metric(ctxp, NULL, NULL,
670 out->force_header ?
671 (metric_name ? metric_name : name) : "", 0);
bba49af8
AK		 672 } else
673 print_metric(ctxp, NULL, NULL, "", 0);
674}
675
140aeadc
AK		 676void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
677 double avg, int cpu,
b18f3e36
AK		 678 struct perf_stat_output_ctx *out,
679 struct rblist *metric_events)
f87027b9 680{
140aeadc
AK		 681 void *ctxp = out->ctx;
682 print_metric_t print_metric = out->print_metric;
f87027b9 683 double total, ratio = 0.0, total2;
239bd47f 684 const char *color = NULL;
f87027b9 685 int ctx = evsel_context(evsel);
b18f3e36
AK		 686 struct metric_event *me;
687 int num = 1;
f87027b9
JO		 688
689 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
690 total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
691 if (total) {
692 ratio = avg / total;
140aeadc
AK		 693 print_metric(ctxp, NULL, "%7.2f ",
694 "insn per cycle", ratio);
f87027b9 695 } else {
140aeadc 696 print_metric(ctxp, NULL, NULL, "insn per cycle", 0);
f87027b9
JO		 697 }
698 total = avg_stats(&runtime_stalled_cycles_front_stats[ctx][cpu]);
699 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[ctx][cpu]));
700
701 if (total && avg) {
92a61f64 702 out->new_line(ctxp);
f87027b9 703 ratio = total / avg;
140aeadc
AK		 704 print_metric(ctxp, NULL, "%7.2f ",
705 "stalled cycles per insn",
706 ratio);
fb4605ba 707 } else if (have_frontend_stalled) {
140aeadc
AK		 708 print_metric(ctxp, NULL, NULL,
709 "stalled cycles per insn", 0);
f87027b9 710 }
140aeadc
AK		 711 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) {
712 if (runtime_branches_stats[ctx][cpu].n != 0)
713 print_branch_misses(cpu, evsel, avg, out);
714 else
715 print_metric(ctxp, NULL, NULL, "of all branches", 0);
f87027b9
JO		 716 } else if (
717 evsel->attr.type == PERF_TYPE_HW_CACHE &&
718 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
719 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
140aeadc
AK		 720 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
721 if (runtime_l1_dcache_stats[ctx][cpu].n != 0)
722 print_l1_dcache_misses(cpu, evsel, avg, out);
723 else
724 print_metric(ctxp, NULL, NULL, "of all L1-dcache hits", 0);
f87027b9
JO		 725 } else if (
726 evsel->attr.type == PERF_TYPE_HW_CACHE &&
727 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
728 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
140aeadc
AK		 729 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
730 if (runtime_l1_icache_stats[ctx][cpu].n != 0)
731 print_l1_icache_misses(cpu, evsel, avg, out);
732 else
733 print_metric(ctxp, NULL, NULL, "of all L1-icache hits", 0);
f87027b9
JO		 734 } else if (
735 evsel->attr.type == PERF_TYPE_HW_CACHE &&
736 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
737 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
140aeadc
AK		 738 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
739 if (runtime_dtlb_cache_stats[ctx][cpu].n != 0)
740 print_dtlb_cache_misses(cpu, evsel, avg, out);
741 else
742 print_metric(ctxp, NULL, NULL, "of all dTLB cache hits", 0);
f87027b9
JO		 743 } else if (
744 evsel->attr.type == PERF_TYPE_HW_CACHE &&
745 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
746 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
140aeadc
AK		 747 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
748 if (runtime_itlb_cache_stats[ctx][cpu].n != 0)
749 print_itlb_cache_misses(cpu, evsel, avg, out);
750 else
751 print_metric(ctxp, NULL, NULL, "of all iTLB cache hits", 0);
f87027b9
JO		 752 } else if (
753 evsel->attr.type == PERF_TYPE_HW_CACHE &&
754 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
755 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
140aeadc
AK		 756 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
757 if (runtime_ll_cache_stats[ctx][cpu].n != 0)
758 print_ll_cache_misses(cpu, evsel, avg, out);
759 else
760 print_metric(ctxp, NULL, NULL, "of all LL-cache hits", 0);
761 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) {
f87027b9
JO		 762 total = avg_stats(&runtime_cacherefs_stats[ctx][cpu]);
763
764 if (total)
765 ratio = avg * 100 / total;
766
140aeadc
AK		 767 if (runtime_cacherefs_stats[ctx][cpu].n != 0)
768 print_metric(ctxp, NULL, "%8.3f %%",
769 "of all cache refs", ratio);
770 else
771 print_metric(ctxp, NULL, NULL, "of all cache refs", 0);
f87027b9 772 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
140aeadc 773 print_stalled_cycles_frontend(cpu, evsel, avg, out);
f87027b9 774 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
140aeadc 775 print_stalled_cycles_backend(cpu, evsel, avg, out);
f87027b9
JO		 776 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
777 total = avg_stats(&runtime_nsecs_stats[cpu]);
778
779 if (total) {
780 ratio = avg / total;
140aeadc 781 print_metric(ctxp, NULL, "%8.3f", "GHz", ratio);
f87027b9 782 } else {
140aeadc 783 print_metric(ctxp, NULL, NULL, "Ghz", 0);
f87027b9
JO		 784 }
785 } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX)) {
786 total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
787 if (total)
140aeadc
AK		 788 print_metric(ctxp, NULL,
789 "%7.2f%%", "transactional cycles",
790 100.0 * (avg / total));
791 else
792 print_metric(ctxp, NULL, NULL, "transactional cycles",
793 0);
f87027b9
JO		 794 } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX_CP)) {
795 total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
796 total2 = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
797 if (total2 < avg)
798 total2 = avg;
799 if (total)
140aeadc 800 print_metric(ctxp, NULL, "%7.2f%%", "aborted cycles",
f87027b9 801 100.0 * ((total2-avg) / total));
140aeadc
AK		 802 else
803 print_metric(ctxp, NULL, NULL, "aborted cycles", 0);
804 } else if (perf_stat_evsel__is(evsel, TRANSACTION_START)) {
f87027b9
JO		 805 total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
806
54976285 807 if (avg)
f87027b9
JO		 808 ratio = total / avg;
809
140aeadc
AK		 810 if (runtime_cycles_in_tx_stats[ctx][cpu].n != 0)
811 print_metric(ctxp, NULL, "%8.0f",
812 "cycles / transaction", ratio);
813 else
814 print_metric(ctxp, NULL, NULL, "cycles / transaction",
815 0);
816 } else if (perf_stat_evsel__is(evsel, ELISION_START)) {
f87027b9
JO		 817 total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
818
54976285 819 if (avg)
f87027b9
JO		 820 ratio = total / avg;
821
140aeadc 822 print_metric(ctxp, NULL, "%8.0f", "cycles / elision", ratio);
daf4f478
NK		 823 } else if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK) ||
824 perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK)) {
4579ecc8 825 if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0)
140aeadc
AK		 826 print_metric(ctxp, NULL, "%8.3f", "CPUs utilized",
827 avg / ratio);
4579ecc8 828 else
140aeadc 829 print_metric(ctxp, NULL, NULL, "CPUs utilized", 0);
239bd47f
AK		 830 } else if (perf_stat_evsel__is(evsel, TOPDOWN_FETCH_BUBBLES)) {
831 double fe_bound = td_fe_bound(ctx, cpu);
832
833 if (fe_bound > 0.2)
834 color = PERF_COLOR_RED;
835 print_metric(ctxp, color, "%8.1f%%", "frontend bound",
836 fe_bound * 100.);
837 } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_RETIRED)) {
838 double retiring = td_retiring(ctx, cpu);
839
840 if (retiring > 0.7)
841 color = PERF_COLOR_GREEN;
842 print_metric(ctxp, color, "%8.1f%%", "retiring",
843 retiring * 100.);
844 } else if (perf_stat_evsel__is(evsel, TOPDOWN_RECOVERY_BUBBLES)) {
845 double bad_spec = td_bad_spec(ctx, cpu);
846
847 if (bad_spec > 0.1)
848 color = PERF_COLOR_RED;
849 print_metric(ctxp, color, "%8.1f%%", "bad speculation",
850 bad_spec * 100.);
851 } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_ISSUED)) {
852 double be_bound = td_be_bound(ctx, cpu);
853 const char *name = "backend bound";
854 static int have_recovery_bubbles = -1;
855
856 /* In case the CPU does not support topdown-recovery-bubbles */
857 if (have_recovery_bubbles < 0)
858 have_recovery_bubbles = pmu_have_event("cpu",
859 "topdown-recovery-bubbles");
860 if (!have_recovery_bubbles)
861 name = "backend bound/bad spec";
862
863 if (be_bound > 0.2)
864 color = PERF_COLOR_RED;
865 if (td_total_slots(ctx, cpu) > 0)
866 print_metric(ctxp, color, "%8.1f%%", name,
867 be_bound * 100.);
868 else
869 print_metric(ctxp, NULL, NULL, name, 0);
37932c18 870 } else if (evsel->metric_expr) {
bba49af8 871 generic_metric(evsel->metric_expr, evsel->metric_events, evsel->name,
4e1a0963 872 evsel->metric_name, avg, cpu, out);
f87027b9
JO		 873 } else if (runtime_nsecs_stats[cpu].n != 0) {
874 char unit = 'M';
140aeadc 875 char unit_buf[10];
f87027b9
JO		 876
877 total = avg_stats(&runtime_nsecs_stats[cpu]);
878
879 if (total)
880 ratio = 1000.0 * avg / total;
881 if (ratio < 0.001) {
882 ratio *= 1000;
883 unit = 'K';
884 }
140aeadc
AK		 885 snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);
886 print_metric(ctxp, NULL, "%8.3f", unit_buf, ratio);
daefd0bc
KL		 887 } else if (perf_stat_evsel__is(evsel, SMI_NUM)) {
888 print_smi_cost(cpu, evsel, out);
f87027b9 889 } else {
b18f3e36 890 num = 0;
f87027b9 891 }
b18f3e36
AK		 892
893 if ((me = metricgroup__lookup(metric_events, evsel, false)) != NULL) {
894 struct metric_expr *mexp;
895
896 list_for_each_entry (mexp, &me->head, nd) {
897 if (num++ > 0)
898 out->new_line(ctxp);
899 generic_metric(mexp->metric_expr, mexp->metric_events,
900 evsel->name, mexp->metric_name,
4e1a0963 901 avg, cpu, out);
b18f3e36
AK		 902 }
903 }
904 if (num == 0)
905 print_metric(ctxp, NULL, NULL, NULL, 0);
f87027b9 906}
Linux 6.x block layer and io_uring tree(s)