stat-display.c

   1#include <stdlib.h>
   2#include <stdio.h>
   3#include <inttypes.h>
   4#include <linux/string.h>
   5#include <linux/time64.h>
   6#include <math.h>
   7#include <perf/cpumap.h>
   8#include "color.h"
   9#include "counts.h"
  10#include "debug.h"
  11#include "evlist.h"
  12#include "evsel.h"
  13#include "stat.h"
  14#include "top.h"
  15#include "thread_map.h"
  16#include "cpumap.h"
  17#include "string2.h"
  18#include <linux/ctype.h>
  19#include "cgroup.h"
  20#include <api/fs/fs.h>
  21#include "util.h"
  22#include "iostat.h"
  23#include "pmu.h"
  24#include "pmus.h"
  25#include "tool_pmu.h"
  26
  27#define CNTR_NOT_SUPPORTED	"<not supported>"
  28#define CNTR_NOT_COUNTED	"<not counted>"
  29
  30#define MGROUP_LEN   50
  31#define METRIC_LEN   38
  32#define EVNAME_LEN   32
  33#define COUNTS_LEN   18
  34#define INTERVAL_LEN 16
  35#define CGROUP_LEN   16
  36#define COMM_LEN     16
  37#define PID_LEN       7
  38#define CPUS_LEN      4
  39
  40static int aggr_header_lens[] = {
  41	[AGGR_CORE] 	= 18,
  42	[AGGR_CACHE]	= 22,
  43	[AGGR_CLUSTER]	= 20,
  44	[AGGR_DIE] 	= 12,
  45	[AGGR_SOCKET] 	= 6,
  46	[AGGR_NODE] 	= 6,
  47	[AGGR_NONE] 	= 6,
  48	[AGGR_THREAD] 	= 16,
  49	[AGGR_GLOBAL] 	= 0,
  50};
  51
  52static const char *aggr_header_csv[] = {
  53	[AGGR_CORE]	=	"core,ctrs,",
  54	[AGGR_CACHE]	=	"cache,ctrs,",
  55	[AGGR_CLUSTER]	=	"cluster,ctrs,",
  56	[AGGR_DIE]	=	"die,ctrs,",
  57	[AGGR_SOCKET]	=	"socket,ctrs,",
  58	[AGGR_NONE]	=	"cpu,",
  59	[AGGR_THREAD]	=	"comm-pid,",
  60	[AGGR_NODE]	=	"node,",
  61	[AGGR_GLOBAL]	=	""
  62};
  63
  64static const char *aggr_header_std[] = {
  65	[AGGR_CORE] 	= 	"core",
  66	[AGGR_CACHE] 	= 	"cache",
  67	[AGGR_CLUSTER]	= 	"cluster",
  68	[AGGR_DIE] 	= 	"die",
  69	[AGGR_SOCKET] 	= 	"socket",
  70	[AGGR_NONE] 	= 	"cpu",
  71	[AGGR_THREAD] 	= 	"comm-pid",
  72	[AGGR_NODE] 	= 	"node",
  73	[AGGR_GLOBAL] 	=	""
  74};
  75
  76const char *metric_threshold_classify__color(enum metric_threshold_classify thresh)
  77{
  78	const char * const colors[] = {
  79		"", /* unknown */
  80		PERF_COLOR_RED,     /* bad */
  81		PERF_COLOR_MAGENTA, /* nearly bad */
  82		PERF_COLOR_YELLOW,  /* less good */
  83		PERF_COLOR_GREEN,   /* good */
  84	};
  85	static_assert(ARRAY_SIZE(colors) - 1  == METRIC_THRESHOLD_GOOD, "missing enum value");
  86	return colors[thresh];
  87}
  88
  89static const char *metric_threshold_classify__str(enum metric_threshold_classify thresh)
  90{
  91	const char * const strs[] = {
  92		"unknown",
  93		"bad",
  94		"nearly bad",
  95		"less good",
  96		"good",
  97	};
  98	static_assert(ARRAY_SIZE(strs) - 1  == METRIC_THRESHOLD_GOOD, "missing enum value");
  99	return strs[thresh];
 100}
 101
 102static void print_running_std(struct perf_stat_config *config, u64 run, u64 ena)
 103{
 104	if (run != ena)
 105		fprintf(config->output, "  (%.2f%%)", 100.0 * run / ena);
 106}
 107
 108static void print_running_csv(struct perf_stat_config *config, u64 run, u64 ena)
 109{
 110	double enabled_percent = 100;
 111
 112	if (run != ena)
 113		enabled_percent = 100 * run / ena;
 114	fprintf(config->output, "%s%" PRIu64 "%s%.2f",
 115		config->csv_sep, run, config->csv_sep, enabled_percent);
 116}
 117struct outstate {
 118	/* Std mode: insert a newline before the next metric */
 119	bool newline;
 120	/* JSON mode: track need for comma for a previous field or not */
 121	bool first;
 122	/* Num CSV separators remaining to pad out when not all fields are printed */
 123	int  csv_col_pad;
 124
 125	/*
 126	 * The following don't track state across fields, but are here as a shortcut to
 127	 * pass data to the print functions. The alternative would be to update the
 128	 * function signatures of the entire print stack to pass them through.
 129	 */
 130	/* Place to output to */
 131	FILE * const fh;
 132	/* Lines are timestamped in --interval-print mode */
 133	char timestamp[64];
 134	/* Num items aggregated in current line. See struct perf_stat_aggr.nr */
 135	int aggr_nr;
 136	/* Core/socket/die etc ID for the current line */
 137	struct aggr_cpu_id id;
 138	/* Event for current line */
 139	struct evsel *evsel;
 140	/* Cgroup for current line */
 141	struct cgroup *cgrp;
 142};
 143
 144static const char *json_sep(struct outstate *os)
 145{
 146	const char *sep = os->first ? "" : ", ";
 147
 148	os->first = false;
 149	return sep;
 150}
 151
 152#define json_out(os, format, ...) fprintf((os)->fh, "%s" format, json_sep(os), ##__VA_ARGS__)
 153
 154static void print_running_json(struct outstate *os, u64 run, u64 ena)
 155{
 156	double enabled_percent = 100;
 157
 158	if (run != ena)
 159		enabled_percent = 100 * run / ena;
 160	json_out(os, "\"event-runtime\" : %" PRIu64 ", \"pcnt-running\" : %.2f",
 161		 run, enabled_percent);
 162}
 163
 164static void print_running(struct perf_stat_config *config, struct outstate *os,
 165			  u64 run, u64 ena, bool before_metric)
 166{
 167	if (config->json_output) {
 168		if (before_metric)
 169			print_running_json(os, run, ena);
 170	} else if (config->csv_output) {
 171		if (before_metric)
 172			print_running_csv(config, run, ena);
 173	} else {
 174		if (!before_metric)
 175			print_running_std(config, run, ena);
 176	}
 177}
 178
 179static void print_noise_pct_std(struct perf_stat_config *config,
 180				double pct)
 181{
 182	if (pct)
 183		fprintf(config->output, "  ( +-%6.2f%% )", pct);
 184}
 185
 186static void print_noise_pct_csv(struct perf_stat_config *config,
 187				double pct)
 188{
 189	fprintf(config->output, "%s%.2f%%", config->csv_sep, pct);
 190}
 191
 192static void print_noise_pct_json(struct outstate *os,
 193				 double pct)
 194{
 195	json_out(os, "\"variance\" : %.2f", pct);
 196}
 197
 198static void print_noise_pct(struct perf_stat_config *config, struct outstate *os,
 199			    double total, double avg, bool before_metric)
 200{
 201	double pct = rel_stddev_stats(total, avg);
 202
 203	if (config->json_output) {
 204		if (before_metric)
 205			print_noise_pct_json(os, pct);
 206	} else if (config->csv_output) {
 207		if (before_metric)
 208			print_noise_pct_csv(config, pct);
 209	} else {
 210		if (!before_metric)
 211			print_noise_pct_std(config, pct);
 212	}
 213}
 214
 215static void print_noise(struct perf_stat_config *config, struct outstate *os,
 216			struct evsel *evsel, double avg, bool before_metric)
 217{
 218	struct perf_stat_evsel *ps;
 219
 220	if (config->run_count == 1)
 221		return;
 222
 223	ps = evsel->stats;
 224	print_noise_pct(config, os, stddev_stats(&ps->res_stats), avg, before_metric);
 225}
 226
 227static void print_cgroup_std(struct perf_stat_config *config, const char *cgrp_name)
 228{
 229	fprintf(config->output, " %-*s", CGROUP_LEN, cgrp_name);
 230}
 231
 232static void print_cgroup_csv(struct perf_stat_config *config, const char *cgrp_name)
 233{
 234	fprintf(config->output, "%s%s", config->csv_sep, cgrp_name);
 235}
 236
 237static void print_cgroup_json(struct outstate *os, const char *cgrp_name)
 238{
 239	json_out(os, "\"cgroup\" : \"%s\"", cgrp_name);
 240}
 241
 242static void print_cgroup(struct perf_stat_config *config, struct outstate *os,
 243			 struct cgroup *cgrp)
 244{
 245	if (nr_cgroups || config->cgroup_list) {
 246		const char *cgrp_name = cgrp ? cgrp->name  : "";
 247
 248		if (config->json_output)
 249			print_cgroup_json(os, cgrp_name);
 250		else if (config->csv_output)
 251			print_cgroup_csv(config, cgrp_name);
 252		else
 253			print_cgroup_std(config, cgrp_name);
 254	}
 255}
 256
 257static void print_aggr_id_std(struct perf_stat_config *config,
 258			      struct evsel *evsel, struct aggr_cpu_id id, int aggr_nr)
 259{
 260	FILE *output = config->output;
 261	int idx = config->aggr_mode;
 262	char buf[128];
 263
 264	switch (config->aggr_mode) {
 265	case AGGR_CORE:
 266		snprintf(buf, sizeof(buf), "S%d-D%d-C%d", id.socket, id.die, id.core);
 267		break;
 268	case AGGR_CACHE:
 269		snprintf(buf, sizeof(buf), "S%d-D%d-L%d-ID%d",
 270			 id.socket, id.die, id.cache_lvl, id.cache);
 271		break;
 272	case AGGR_CLUSTER:
 273		snprintf(buf, sizeof(buf), "S%d-D%d-CLS%d", id.socket, id.die, id.cluster);
 274		break;
 275	case AGGR_DIE:
 276		snprintf(buf, sizeof(buf), "S%d-D%d", id.socket, id.die);
 277		break;
 278	case AGGR_SOCKET:
 279		snprintf(buf, sizeof(buf), "S%d", id.socket);
 280		break;
 281	case AGGR_NODE:
 282		snprintf(buf, sizeof(buf), "N%d", id.node);
 283		break;
 284	case AGGR_NONE:
 285		if (evsel->percore && !config->percore_show_thread) {
 286			snprintf(buf, sizeof(buf), "S%d-D%d-C%d ",
 287				id.socket, id.die, id.core);
 288			fprintf(output, "%-*s ",
 289				aggr_header_lens[AGGR_CORE], buf);
 290		} else if (id.cpu.cpu > -1) {
 291			fprintf(output, "CPU%-*d ",
 292				aggr_header_lens[AGGR_NONE] - 3, id.cpu.cpu);
 293		}
 294		return;
 295	case AGGR_THREAD:
 296		fprintf(output, "%*s-%-*d ",
 297			COMM_LEN, perf_thread_map__comm(evsel->core.threads, id.thread_idx),
 298			PID_LEN, perf_thread_map__pid(evsel->core.threads, id.thread_idx));
 299		return;
 300	case AGGR_GLOBAL:
 301	case AGGR_UNSET:
 302	case AGGR_MAX:
 303	default:
 304		return;
 305	}
 306
 307	fprintf(output, "%-*s %*d ", aggr_header_lens[idx], buf, /*strlen("ctrs")*/ 4, aggr_nr);
 308}
 309
 310static void print_aggr_id_csv(struct perf_stat_config *config,
 311			      struct evsel *evsel, struct aggr_cpu_id id, int aggr_nr)
 312{
 313	FILE *output = config->output;
 314	const char *sep = config->csv_sep;
 315
 316	switch (config->aggr_mode) {
 317	case AGGR_CORE:
 318		fprintf(output, "S%d-D%d-C%d%s%d%s",
 319			id.socket, id.die, id.core, sep, aggr_nr, sep);
 320		break;
 321	case AGGR_CACHE:
 322		fprintf(config->output, "S%d-D%d-L%d-ID%d%s%d%s",
 323			id.socket, id.die, id.cache_lvl, id.cache, sep, aggr_nr, sep);
 324		break;
 325	case AGGR_CLUSTER:
 326		fprintf(config->output, "S%d-D%d-CLS%d%s%d%s",
 327			id.socket, id.die, id.cluster, sep, aggr_nr, sep);
 328		break;
 329	case AGGR_DIE:
 330		fprintf(output, "S%d-D%d%s%d%s",
 331			id.socket, id.die, sep, aggr_nr, sep);
 332		break;
 333	case AGGR_SOCKET:
 334		fprintf(output, "S%d%s%d%s",
 335			id.socket, sep, aggr_nr, sep);
 336		break;
 337	case AGGR_NODE:
 338		fprintf(output, "N%d%s%d%s",
 339			id.node, sep, aggr_nr, sep);
 340		break;
 341	case AGGR_NONE:
 342		if (evsel->percore && !config->percore_show_thread) {
 343			fprintf(output, "S%d-D%d-C%d%s",
 344				id.socket, id.die, id.core, sep);
 345		} else if (id.cpu.cpu > -1) {
 346			fprintf(output, "CPU%d%s",
 347				id.cpu.cpu, sep);
 348		}
 349		break;
 350	case AGGR_THREAD:
 351		fprintf(output, "%s-%d%s",
 352			perf_thread_map__comm(evsel->core.threads, id.thread_idx),
 353			perf_thread_map__pid(evsel->core.threads, id.thread_idx),
 354			sep);
 355		break;
 356	case AGGR_GLOBAL:
 357	case AGGR_UNSET:
 358	case AGGR_MAX:
 359	default:
 360		break;
 361	}
 362}
 363
 364static void print_aggr_id_json(struct perf_stat_config *config, struct outstate *os,
 365			       struct evsel *evsel, struct aggr_cpu_id id, int aggr_nr)
 366{
 367	switch (config->aggr_mode) {
 368	case AGGR_CORE:
 369		json_out(os, "\"core\" : \"S%d-D%d-C%d\", \"counters\" : %d",
 370			id.socket, id.die, id.core, aggr_nr);
 371		break;
 372	case AGGR_CACHE:
 373		json_out(os, "\"cache\" : \"S%d-D%d-L%d-ID%d\", \"counters\" : %d",
 374			id.socket, id.die, id.cache_lvl, id.cache, aggr_nr);
 375		break;
 376	case AGGR_CLUSTER:
 377		json_out(os, "\"cluster\" : \"S%d-D%d-CLS%d\", \"counters\" : %d",
 378			id.socket, id.die, id.cluster, aggr_nr);
 379		break;
 380	case AGGR_DIE:
 381		json_out(os, "\"die\" : \"S%d-D%d\", \"counters\" : %d",
 382			id.socket, id.die, aggr_nr);
 383		break;
 384	case AGGR_SOCKET:
 385		json_out(os, "\"socket\" : \"S%d\", \"counters\" : %d",
 386			id.socket, aggr_nr);
 387		break;
 388	case AGGR_NODE:
 389		json_out(os, "\"node\" : \"N%d\", \"counters\" : %d",
 390			id.node, aggr_nr);
 391		break;
 392	case AGGR_NONE:
 393		if (evsel->percore && !config->percore_show_thread) {
 394			json_out(os, "\"core\" : \"S%d-D%d-C%d\"",
 395				id.socket, id.die, id.core);
 396		} else if (id.cpu.cpu > -1) {
 397			json_out(os, "\"cpu\" : \"%d\"",
 398				id.cpu.cpu);
 399		}
 400		break;
 401	case AGGR_THREAD:
 402		json_out(os, "\"thread\" : \"%s-%d\"",
 403			perf_thread_map__comm(evsel->core.threads, id.thread_idx),
 404			perf_thread_map__pid(evsel->core.threads, id.thread_idx));
 405		break;
 406	case AGGR_GLOBAL:
 407	case AGGR_UNSET:
 408	case AGGR_MAX:
 409	default:
 410		break;
 411	}
 412}
 413
 414static void aggr_printout(struct perf_stat_config *config, struct outstate *os,
 415			  struct evsel *evsel, struct aggr_cpu_id id, int aggr_nr)
 416{
 417	if (config->json_output)
 418		print_aggr_id_json(config, os, evsel, id, aggr_nr);
 419	else if (config->csv_output)
 420		print_aggr_id_csv(config, evsel, id, aggr_nr);
 421	else
 422		print_aggr_id_std(config, evsel, id, aggr_nr);
 423}
 424
 425static void new_line_std(struct perf_stat_config *config __maybe_unused,
 426			 void *ctx)
 427{
 428	struct outstate *os = ctx;
 429
 430	os->newline = true;
 431}
 432
 433static inline void __new_line_std_csv(struct perf_stat_config *config,
 434				      struct outstate *os)
 435{
 436	fputc('\n', os->fh);
 437	if (config->interval)
 438		fputs(os->timestamp, os->fh);
 439	aggr_printout(config, os, os->evsel, os->id, os->aggr_nr);
 440}
 441
 442static inline void __new_line_std(struct perf_stat_config *config, struct outstate *os)
 443{
 444	fprintf(os->fh, "%*s", COUNTS_LEN + EVNAME_LEN + config->unit_width + 2, "");
 445}
 446
 447static void do_new_line_std(struct perf_stat_config *config,
 448			    struct outstate *os)
 449{
 450	__new_line_std_csv(config, os);
 451	if (config->aggr_mode == AGGR_NONE)
 452		fprintf(os->fh, "        ");
 453	__new_line_std(config, os);
 454}
 455
 456static void print_metric_std(struct perf_stat_config *config,
 457			     void *ctx, enum metric_threshold_classify thresh,
 458			     const char *fmt, const char *unit, double val)
 459{
 460	struct outstate *os = ctx;
 461	FILE *out = os->fh;
 462	int n;
 463	bool newline = os->newline;
 464	const char *color = metric_threshold_classify__color(thresh);
 465
 466	os->newline = false;
 467
 468	if (unit == NULL || fmt == NULL) {
 469		fprintf(out, "%-*s", METRIC_LEN, "");
 470		return;
 471	}
 472
 473	if (newline)
 474		do_new_line_std(config, os);
 475
 476	n = fprintf(out, " # ");
 477	if (color)
 478		n += color_fprintf(out, color, fmt, val);
 479	else
 480		n += fprintf(out, fmt, val);
 481	fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
 482}
 483
 484static void new_line_csv(struct perf_stat_config *config, void *ctx)
 485{
 486	struct outstate *os = ctx;
 487	int i;
 488
 489	__new_line_std_csv(config, os);
 490	for (i = 0; i < os->csv_col_pad; i++)
 491		fputs(config->csv_sep, os->fh);
 492}
 493
 494static void print_metric_csv(struct perf_stat_config *config __maybe_unused,
 495			     void *ctx,
 496			     enum metric_threshold_classify thresh __maybe_unused,
 497			     const char *fmt, const char *unit, double val)
 498{
 499	struct outstate *os = ctx;
 500	FILE *out = os->fh;
 501	char buf[64], *vals, *ends;
 502
 503	if (unit == NULL || fmt == NULL) {
 504		fprintf(out, "%s%s", config->csv_sep, config->csv_sep);
 505		return;
 506	}
 507	snprintf(buf, sizeof(buf), fmt, val);
 508	ends = vals = skip_spaces(buf);
 509	while (isdigit(*ends) || *ends == '.')
 510		ends++;
 511	*ends = 0;
 512	fprintf(out, "%s%s%s%s", config->csv_sep, vals, config->csv_sep, skip_spaces(unit));
 513}
 514
 515static void print_metric_json(struct perf_stat_config *config __maybe_unused,
 516			     void *ctx,
 517			     enum metric_threshold_classify thresh,
 518			     const char *fmt __maybe_unused,
 519			     const char *unit, double val)
 520{
 521	struct outstate *os = ctx;
 522	FILE *out = os->fh;
 523
 524	if (unit) {
 525		json_out(os, "\"metric-value\" : \"%f\", \"metric-unit\" : \"%s\"", val, unit);
 526		if (thresh != METRIC_THRESHOLD_UNKNOWN) {
 527			json_out(os, "\"metric-threshold\" : \"%s\"",
 528				metric_threshold_classify__str(thresh));
 529		}
 530	}
 531	if (!config->metric_only)
 532		fprintf(out, "}");
 533}
 534
 535static void new_line_json(struct perf_stat_config *config, void *ctx)
 536{
 537	struct outstate *os = ctx;
 538
 539	fputs("\n{", os->fh);
 540	os->first = true;
 541	if (config->interval)
 542		json_out(os, "%s", os->timestamp);
 543
 544	aggr_printout(config, os, os->evsel, os->id, os->aggr_nr);
 545}
 546
 547static void print_metricgroup_header_json(struct perf_stat_config *config,
 548					  void *ctx,
 549					  const char *metricgroup_name)
 550{
 551	if (!metricgroup_name)
 552		return;
 553
 554	json_out((struct outstate *) ctx, "\"metricgroup\" : \"%s\"}", metricgroup_name);
 555	new_line_json(config, ctx);
 556}
 557
 558static void print_metricgroup_header_csv(struct perf_stat_config *config,
 559					 void *ctx,
 560					 const char *metricgroup_name)
 561{
 562	struct outstate *os = ctx;
 563	int i;
 564
 565	if (!metricgroup_name) {
 566		/* Leave space for running and enabling */
 567		for (i = 0; i < os->csv_col_pad - 2; i++)
 568			fputs(config->csv_sep, os->fh);
 569		return;
 570	}
 571
 572	for (i = 0; i < os->csv_col_pad; i++)
 573		fputs(config->csv_sep, os->fh);
 574	fprintf(config->output, "%s", metricgroup_name);
 575	new_line_csv(config, ctx);
 576}
 577
 578static void print_metricgroup_header_std(struct perf_stat_config *config,
 579					 void *ctx,
 580					 const char *metricgroup_name)
 581{
 582	struct outstate *os = ctx;
 583	int n;
 584
 585	if (!metricgroup_name) {
 586		__new_line_std(config, os);
 587		return;
 588	}
 589
 590	n = fprintf(config->output, " %*s", EVNAME_LEN, metricgroup_name);
 591
 592	fprintf(config->output, "%*s", MGROUP_LEN + config->unit_width + 2 - n, "");
 593}
 594
 595static void print_metric_only(struct perf_stat_config *config,
 596			      void *ctx, enum metric_threshold_classify thresh,
 597			      const char *fmt, const char *unit, double val)
 598{
 599	struct outstate *os = ctx;
 600	FILE *out = os->fh;
 601	char str[1024];
 602	unsigned mlen = config->metric_only_len;
 603	const char *color = metric_threshold_classify__color(thresh);
 604
 605	if (!unit)
 606		unit = "";
 607	if (mlen < strlen(unit))
 608		mlen = strlen(unit) + 1;
 609
 610	if (color)
 611		mlen += strlen(color) + sizeof(PERF_COLOR_RESET) - 1;
 612
 613	color_snprintf(str, sizeof(str), color ?: "", fmt ?: "", val);
 614	fprintf(out, "%*s ", mlen, str);
 615	os->first = false;
 616}
 617
 618static void print_metric_only_csv(struct perf_stat_config *config __maybe_unused,
 619				  void *ctx,
 620				  enum metric_threshold_classify thresh __maybe_unused,
 621				  const char *fmt,
 622				  const char *unit __maybe_unused, double val)
 623{
 624	struct outstate *os = ctx;
 625	FILE *out = os->fh;
 626	char buf[64], *vals, *ends;
 627
 628	if (!unit)
 629		return;
 630
 631	snprintf(buf, sizeof(buf), fmt ?: "", val);
 632	ends = vals = skip_spaces(buf);
 633	while (isdigit(*ends) || *ends == '.')
 634		ends++;
 635	*ends = 0;
 636	fprintf(out, "%s%s", vals, config->csv_sep);
 637	os->first = false;
 638}
 639
 640static void print_metric_only_json(struct perf_stat_config *config __maybe_unused,
 641				  void *ctx,
 642				  enum metric_threshold_classify thresh __maybe_unused,
 643				  const char *fmt,
 644				  const char *unit, double val)
 645{
 646	struct outstate *os = ctx;
 647	char buf[64], *ends;
 648	const char *vals;
 649
 650	if (!unit || !unit[0])
 651		return;
 652	snprintf(buf, sizeof(buf), fmt ?: "", val);
 653	vals = ends = skip_spaces(buf);
 654	while (isdigit(*ends) || *ends == '.')
 655		ends++;
 656	*ends = 0;
 657	if (!vals[0])
 658		vals = "none";
 659	json_out(os, "\"%s\" : \"%s\"", unit, vals);
 660}
 661
 662static void print_metric_header(struct perf_stat_config *config,
 663				void *ctx,
 664				enum metric_threshold_classify thresh __maybe_unused,
 665				const char *fmt __maybe_unused,
 666				const char *unit, double val __maybe_unused)
 667{
 668	struct outstate *os = ctx;
 669
 670	/* In case of iostat, print metric header for first root port only */
 671	if (config->iostat_run &&
 672	    os->evsel->priv != os->evsel->evlist->selected->priv)
 673		return;
 674
 675	if (os->evsel->cgrp != os->cgrp)
 676		return;
 677
 678	if (!unit)
 679		return;
 680
 681	if (config->json_output)
 682		return;
 683	else if (config->csv_output)
 684		fprintf(os->fh, "%s%s", unit, config->csv_sep);
 685	else
 686		fprintf(os->fh, "%*s ", config->metric_only_len, unit);
 687}
 688
 689static void print_counter_value_std(struct perf_stat_config *config,
 690				    struct evsel *evsel, double avg, bool ok)
 691{
 692	FILE *output = config->output;
 693	double sc =  evsel->scale;
 694	const char *fmt;
 695	const char *bad_count = evsel->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED;
 696
 697	if (config->big_num)
 698		fmt = floor(sc) != sc ? "%'*.2f " : "%'*.0f ";
 699	else
 700		fmt = floor(sc) != sc ? "%*.2f " : "%*.0f ";
 701
 702	if (ok)
 703		fprintf(output, fmt, COUNTS_LEN, avg);
 704	else
 705		fprintf(output, "%*s ", COUNTS_LEN, bad_count);
 706
 707	if (evsel->unit)
 708		fprintf(output, "%-*s ", config->unit_width, evsel->unit);
 709
 710	fprintf(output, "%-*s", EVNAME_LEN, evsel__name(evsel));
 711}
 712
 713static void print_counter_value_csv(struct perf_stat_config *config,
 714				    struct evsel *evsel, double avg, bool ok)
 715{
 716	FILE *output = config->output;
 717	double sc =  evsel->scale;
 718	const char *sep = config->csv_sep;
 719	const char *fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
 720	const char *bad_count = evsel->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED;
 721
 722	if (ok)
 723		fprintf(output, fmt, avg, sep);
 724	else
 725		fprintf(output, "%s%s", bad_count, sep);
 726
 727	if (evsel->unit)
 728		fprintf(output, "%s%s", evsel->unit, sep);
 729
 730	fprintf(output, "%s", evsel__name(evsel));
 731}
 732
 733static void print_counter_value_json(struct outstate *os,
 734				     struct evsel *evsel, double avg, bool ok)
 735{
 736	const char *bad_count = evsel->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED;
 737
 738	if (ok)
 739		json_out(os, "\"counter-value\" : \"%f\"", avg);
 740	else
 741		json_out(os, "\"counter-value\" : \"%s\"", bad_count);
 742
 743	if (evsel->unit)
 744		json_out(os, "\"unit\" : \"%s\"", evsel->unit);
 745
 746	json_out(os, "\"event\" : \"%s\"", evsel__name(evsel));
 747}
 748
 749static void print_counter_value(struct perf_stat_config *config, struct outstate *os,
 750				struct evsel *evsel, double avg, bool ok)
 751{
 752	if (config->json_output)
 753		print_counter_value_json(os, evsel, avg, ok);
 754	else if (config->csv_output)
 755		print_counter_value_csv(config, evsel, avg, ok);
 756	else
 757		print_counter_value_std(config, evsel, avg, ok);
 758}
 759
 760static void abs_printout(struct perf_stat_config *config,
 761			 struct outstate *os,
 762			 struct aggr_cpu_id id, int aggr_nr,
 763			 struct evsel *evsel, double avg, bool ok)
 764{
 765	aggr_printout(config, os, evsel, id, aggr_nr);
 766	print_counter_value(config, os, evsel, avg, ok);
 767	print_cgroup(config, os, evsel->cgrp);
 768}
 769
 770static bool evlist__has_hybrid_pmus(struct evlist *evlist)
 771{
 772	struct evsel *evsel;
 773	struct perf_pmu *last_core_pmu = NULL;
 774
 775	if (perf_pmus__num_core_pmus() == 1)
 776		return false;
 777
 778	evlist__for_each_entry(evlist, evsel) {
 779		if (evsel->core.is_pmu_core) {
 780			struct perf_pmu *pmu = evsel__find_pmu(evsel);
 781
 782			if (pmu == last_core_pmu)
 783				continue;
 784
 785			if (last_core_pmu == NULL) {
 786				last_core_pmu = pmu;
 787				continue;
 788			}
 789			/* A distinct core PMU. */
 790			return true;
 791		}
 792	}
 793
 794	return false;
 795}
 796
 797static void printout(struct perf_stat_config *config, struct outstate *os,
 798		     double uval, u64 run, u64 ena, double noise, int aggr_idx)
 799{
 800	struct perf_stat_output_ctx out;
 801	print_metric_t pm;
 802	new_line_t nl;
 803	print_metricgroup_header_t pmh;
 804	bool ok = true;
 805	struct evsel *counter = os->evsel;
 806
 807	if (config->csv_output) {
 808		pm = config->metric_only ? print_metric_only_csv : print_metric_csv;
 809		nl = config->metric_only ? NULL : new_line_csv;
 810		pmh = print_metricgroup_header_csv;
 811		os->csv_col_pad = 4 + (counter->cgrp ? 1 : 0);
 812	} else if (config->json_output) {
 813		pm = config->metric_only ? print_metric_only_json : print_metric_json;
 814		nl = config->metric_only ? NULL : new_line_json;
 815		pmh = print_metricgroup_header_json;
 816	} else {
 817		pm = config->metric_only ? print_metric_only : print_metric_std;
 818		nl = config->metric_only ? NULL : new_line_std;
 819		pmh = print_metricgroup_header_std;
 820	}
 821
 822	if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
 823		ok = false;
 824
 825		if (counter->supported) {
 826			if (!evlist__has_hybrid_pmus(counter->evlist)) {
 827				config->print_free_counters_hint = 1;
 828			}
 829		}
 830	}
 831
 832	out.print_metric = pm;
 833	out.new_line = nl;
 834	out.print_metricgroup_header = pmh;
 835	out.ctx = os;
 836	out.force_header = false;
 837
 838	if (!config->metric_only && (!counter->default_metricgroup || counter->default_show_events)) {
 839		abs_printout(config, os, os->id, os->aggr_nr, counter, uval, ok);
 840
 841		print_noise(config, os, counter, noise, /*before_metric=*/true);
 842		print_running(config, os, run, ena, /*before_metric=*/true);
 843	}
 844
 845	if (!config->metric_only && counter->default_metricgroup &&
 846	    !counter->default_show_events) {
 847		void *from = NULL;
 848
 849		aggr_printout(config, os, os->evsel, os->id, os->aggr_nr);
 850		/* Print out all the metricgroup with the same metric event. */
 851		do {
 852			int num = 0;
 853
 854			/* Print out the new line for the next new metricgroup. */
 855			if (from) {
 856				if (config->json_output)
 857					new_line_json(config, (void *)os);
 858				else
 859					__new_line_std_csv(config, os);
 860			}
 861
 862			print_noise(config, os, counter, noise,
 863				    /*before_metric=*/true);
 864			print_running(config, os, run, ena,
 865				      /*before_metric=*/true);
 866			from = perf_stat__print_shadow_stats_metricgroup(
 867				config, counter, aggr_idx, &num, from, &out);
 868		} while (from != NULL);
 869	} else {
 870		perf_stat__print_shadow_stats(config, counter, aggr_idx, &out);
 871	}
 872
 873	if (!config->metric_only) {
 874		print_noise(config, os, counter, noise, /*before_metric=*/false);
 875		print_running(config, os, run, ena, /*before_metric=*/false);
 876	}
 877}
 878
 879/**
 880 * should_skip_zero_count() - Check if the event should print 0 values.
 881 * @config: The perf stat configuration (including aggregation mode).
 882 * @counter: The evsel with its associated cpumap.
 883 * @id: The aggregation id that is being queried.
 884 *
 885 * Due to mismatch between the event cpumap or thread-map and the
 886 * aggregation mode, sometimes it'd iterate the counter with the map
 887 * which does not contain any values.
 888 *
 889 * For example, uncore events have dedicated CPUs to manage them,
 890 * result for other CPUs should be zero and skipped.
 891 *
 892 * Return: %true if the value should NOT be printed, %false if the value
 893 * needs to be printed like "<not counted>" or "<not supported>".
 894 */
 895static bool should_skip_zero_counter(struct perf_stat_config *config,
 896				     struct evsel *counter,
 897				     const struct aggr_cpu_id *id)
 898{
 899	struct perf_cpu cpu;
 900	int idx;
 901
 902	/*
 903	 * Skip unsupported default events when not verbose. (default events
 904	 * are all marked 'skippable').
 905	 */
 906	if (verbose == 0 && counter->skippable && !counter->supported)
 907		return true;
 908
 909	/* Metric only counts won't be displayed but the metric wants to be computed. */
 910	if (config->metric_only)
 911		return false;
 912	/*
 913	 * Skip value 0 when enabling --per-thread globally,
 914	 * otherwise it will have too many 0 output.
 915	 */
 916	if (config->aggr_mode == AGGR_THREAD && config->system_wide)
 917		return true;
 918
 919	/*
 920	 * In per-thread mode the aggr_map and aggr_get_id functions may be
 921	 * NULL, assume all 0 values should be output in that case.
 922	 */
 923	if (!config->aggr_map || !config->aggr_get_id)
 924		return false;
 925
 926	/*
 927	 * Tool events may be gathered on all logical CPUs, for example
 928	 * system_time, but for many the first index is the only one used, for
 929	 * example num_cores. Don't skip for the first index.
 930	 */
 931	if (evsel__is_tool(counter)) {
 932		struct aggr_cpu_id own_id =
 933			config->aggr_get_id(config, (struct perf_cpu){ .cpu = 0 });
 934
 935		return !aggr_cpu_id__equal(id, &own_id);
 936	}
 937	/*
 938	 * Skip value 0 when the counter's cpumask doesn't match the given aggr
 939	 * id.
 940	 */
 941
 942	perf_cpu_map__for_each_cpu(cpu, idx, counter->core.cpus) {
 943		struct aggr_cpu_id own_id = config->aggr_get_id(config, cpu);
 944
 945		if (aggr_cpu_id__equal(id, &own_id))
 946			return false;
 947	}
 948	return true;
 949}
 950
 951static void print_counter_aggrdata(struct perf_stat_config *config,
 952				   struct evsel *counter, int aggr_idx,
 953				   struct outstate *os)
 954{
 955	FILE *output = config->output;
 956	u64 ena, run, val;
 957	double uval;
 958	struct perf_stat_evsel *ps = counter->stats;
 959	struct perf_stat_aggr *aggr = &ps->aggr[aggr_idx];
 960	struct aggr_cpu_id id = config->aggr_map->map[aggr_idx];
 961	double avg = aggr->counts.val;
 962	bool metric_only = config->metric_only;
 963
 964	os->id = id;
 965	os->aggr_nr = aggr->nr;
 966	os->evsel = counter;
 967
 968	/* Skip already merged uncore/hybrid events */
 969	if (config->aggr_mode != AGGR_NONE) {
 970		if (evsel__is_hybrid(counter)) {
 971			if (config->hybrid_merge && counter->first_wildcard_match != NULL)
 972				return;
 973		} else {
 974			if (counter->first_wildcard_match != NULL)
 975				return;
 976		}
 977	}
 978
 979	val = aggr->counts.val;
 980	ena = aggr->counts.ena;
 981	run = aggr->counts.run;
 982
 983	if (perf_stat__skip_metric_event(counter))
 984		return;
 985
 986	if (val == 0 && should_skip_zero_counter(config, counter, &id))
 987		return;
 988
 989	if (!metric_only) {
 990		if (config->json_output) {
 991			os->first = true;
 992			fputc('{', output);
 993		}
 994		if (config->interval) {
 995			if (config->json_output)
 996				json_out(os, "%s", os->timestamp);
 997			else
 998				fprintf(output, "%s", os->timestamp);
 999		} else if (config->summary && config->csv_output &&
1000			   !config->no_csv_summary)
1001			fprintf(output, "%s%s", "summary", config->csv_sep);
1002	}
1003
1004	uval = val * counter->scale;
1005
1006	printout(config, os, uval, run, ena, avg, aggr_idx);
1007
1008	if (!metric_only)
1009		fputc('\n', output);
1010}
1011
1012static void print_metric_begin(struct perf_stat_config *config,
1013			       struct evlist *evlist,
1014			       struct outstate *os, int aggr_idx)
1015{
1016	struct perf_stat_aggr *aggr;
1017	struct aggr_cpu_id id;
1018	struct evsel *evsel;
1019
1020	os->first = true;
1021	if (!config->metric_only)
1022		return;
1023
1024	if (config->json_output)
1025		fputc('{', config->output);
1026
1027	if (config->interval) {
1028		if (config->json_output)
1029			json_out(os, "%s", os->timestamp);
1030		else
1031			fprintf(config->output, "%s", os->timestamp);
1032	}
1033	evsel = evlist__first(evlist);
1034	id = config->aggr_map->map[aggr_idx];
1035	aggr = &evsel->stats->aggr[aggr_idx];
1036	aggr_printout(config, os, evsel, id, aggr->nr);
1037
1038	print_cgroup(config, os, os->cgrp ? : evsel->cgrp);
1039}
1040
1041static void print_metric_end(struct perf_stat_config *config, struct outstate *os)
1042{
1043	FILE *output = config->output;
1044
1045	if (!config->metric_only)
1046		return;
1047
1048	if (config->json_output) {
1049		if (os->first)
1050			fputs("\"metric-value\" : \"none\"", output);
1051		fputc('}', output);
1052	}
1053	fputc('\n', output);
1054}
1055
1056static void print_aggr(struct perf_stat_config *config,
1057		       struct evlist *evlist,
1058		       struct outstate *os)
1059{
1060	struct evsel *counter;
1061	int aggr_idx;
1062
1063	if (!config->aggr_map || !config->aggr_get_id)
1064		return;
1065
1066	/*
1067	 * With metric_only everything is on a single line.
1068	 * Without each counter has its own line.
1069	 */
1070	cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
1071		print_metric_begin(config, evlist, os, aggr_idx);
1072
1073		evlist__for_each_entry(evlist, counter) {
1074			print_counter_aggrdata(config, counter, aggr_idx, os);
1075		}
1076		print_metric_end(config, os);
1077	}
1078}
1079
1080static void print_aggr_cgroup(struct perf_stat_config *config,
1081			      struct evlist *evlist,
1082			      struct outstate *os)
1083{
1084	struct evsel *counter, *evsel;
1085	int aggr_idx;
1086
1087	if (!config->aggr_map || !config->aggr_get_id)
1088		return;
1089
1090	evlist__for_each_entry(evlist, evsel) {
1091		if (os->cgrp == evsel->cgrp)
1092			continue;
1093
1094		os->cgrp = evsel->cgrp;
1095
1096		cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
1097			print_metric_begin(config, evlist, os, aggr_idx);
1098
1099			evlist__for_each_entry(evlist, counter) {
1100				if (counter->cgrp != os->cgrp)
1101					continue;
1102
1103				print_counter_aggrdata(config, counter, aggr_idx, os);
1104			}
1105			print_metric_end(config, os);
1106		}
1107	}
1108}
1109
1110static void print_counter(struct perf_stat_config *config,
1111			  struct evsel *counter, struct outstate *os)
1112{
1113	int aggr_idx;
1114
1115	/* AGGR_THREAD doesn't have config->aggr_get_id */
1116	if (!config->aggr_map)
1117		return;
1118
1119	cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
1120		print_counter_aggrdata(config, counter, aggr_idx, os);
1121	}
1122}
1123
1124static void print_no_aggr_metric(struct perf_stat_config *config,
1125				 struct evlist *evlist,
1126				 struct outstate *os)
1127{
1128	int all_idx;
1129	struct perf_cpu cpu;
1130
1131	perf_cpu_map__for_each_cpu(cpu, all_idx, evlist->core.user_requested_cpus) {
1132		struct evsel *counter;
1133		bool first = true;
1134
1135		evlist__for_each_entry(evlist, counter) {
1136			u64 ena, run, val;
1137			double uval;
1138			struct perf_stat_evsel *ps = counter->stats;
1139			int aggr_idx = 0;
1140
1141			if (!perf_cpu_map__has(evsel__cpus(counter), cpu))
1142				continue;
1143
1144			cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
1145				if (config->aggr_map->map[aggr_idx].cpu.cpu == cpu.cpu)
1146					break;
1147			}
1148
1149			os->evsel = counter;
1150			os->id = aggr_cpu_id__cpu(cpu, /*data=*/NULL);
1151			if (first) {
1152				print_metric_begin(config, evlist, os, aggr_idx);
1153				first = false;
1154			}
1155			val = ps->aggr[aggr_idx].counts.val;
1156			ena = ps->aggr[aggr_idx].counts.ena;
1157			run = ps->aggr[aggr_idx].counts.run;
1158
1159			uval = val * counter->scale;
1160			printout(config, os, uval, run, ena, 1.0, aggr_idx);
1161		}
1162		if (!first)
1163			print_metric_end(config, os);
1164	}
1165}
1166
1167static void print_metric_headers_std(struct perf_stat_config *config,
1168				     bool no_indent)
1169{
1170	fputc(' ', config->output);
1171
1172	if (!no_indent) {
1173		int len = aggr_header_lens[config->aggr_mode];
1174
1175		if (nr_cgroups || config->cgroup_list)
1176			len += CGROUP_LEN + 1;
1177
1178		fprintf(config->output, "%*s", len, "");
1179	}
1180}
1181
1182static void print_metric_headers_csv(struct perf_stat_config *config,
1183				     bool no_indent __maybe_unused)
1184{
1185	const char *p;
1186
1187	if (config->interval)
1188		fprintf(config->output, "time%s", config->csv_sep);
1189	if (config->iostat_run)
1190		return;
1191
1192	p = aggr_header_csv[config->aggr_mode];
1193	while (*p) {
1194		if (*p == ',')
1195			fputs(config->csv_sep, config->output);
1196		else
1197			fputc(*p, config->output);
1198		p++;
1199	}
1200}
1201
1202static void print_metric_headers_json(struct perf_stat_config *config __maybe_unused,
1203				      bool no_indent __maybe_unused)
1204{
1205}
1206
1207static void print_metric_headers(struct perf_stat_config *config,
1208				 struct evlist *evlist, bool no_indent)
1209{
1210	struct evsel *counter;
1211	struct outstate os = {
1212		.fh = config->output
1213	};
1214	struct perf_stat_output_ctx out = {
1215		.ctx = &os,
1216		.print_metric = print_metric_header,
1217		.new_line = NULL,
1218		.force_header = true,
1219	};
1220
1221	if (config->json_output)
1222		print_metric_headers_json(config, no_indent);
1223	else if (config->csv_output)
1224		print_metric_headers_csv(config, no_indent);
1225	else
1226		print_metric_headers_std(config, no_indent);
1227
1228	if (config->iostat_run)
1229		iostat_print_header_prefix(config);
1230
1231	if (config->cgroup_list)
1232		os.cgrp = evlist__first(evlist)->cgrp;
1233
1234	/* Print metrics headers only */
1235	evlist__for_each_entry(evlist, counter) {
1236		if (!config->iostat_run &&
1237		    config->aggr_mode != AGGR_NONE && counter->metric_leader != counter)
1238			continue;
1239
1240		os.evsel = counter;
1241
1242		perf_stat__print_shadow_stats(config, counter, /*aggr_idx=*/0, &out);
1243	}
1244
1245	if (!config->json_output)
1246		fputc('\n', config->output);
1247}
1248
1249static void prepare_timestamp(struct perf_stat_config *config,
1250			      struct outstate *os, struct timespec *ts)
1251{
1252	if (config->iostat_run)
1253		return;
1254
1255	if (config->json_output)
1256		scnprintf(os->timestamp, sizeof(os->timestamp), "\"interval\" : %lu.%09lu",
1257			  (unsigned long) ts->tv_sec, ts->tv_nsec);
1258	else if (config->csv_output)
1259		scnprintf(os->timestamp, sizeof(os->timestamp), "%lu.%09lu%s",
1260			  (unsigned long) ts->tv_sec, ts->tv_nsec, config->csv_sep);
1261	else
1262		scnprintf(os->timestamp, sizeof(os->timestamp), "%6lu.%09lu ",
1263			  (unsigned long) ts->tv_sec, ts->tv_nsec);
1264}
1265
1266static void print_header_interval_std(struct perf_stat_config *config,
1267				      struct target *_target __maybe_unused,
1268				      struct evlist *evlist,
1269				      int argc __maybe_unused,
1270				      const char **argv __maybe_unused)
1271{
1272	FILE *output = config->output;
1273
1274	switch (config->aggr_mode) {
1275	case AGGR_NODE:
1276	case AGGR_SOCKET:
1277	case AGGR_DIE:
1278	case AGGR_CLUSTER:
1279	case AGGR_CACHE:
1280	case AGGR_CORE:
1281		fprintf(output, "#%*s %-*s ctrs",
1282			INTERVAL_LEN - 1, "time",
1283			aggr_header_lens[config->aggr_mode],
1284			aggr_header_std[config->aggr_mode]);
1285		break;
1286	case AGGR_NONE:
1287		fprintf(output, "#%*s %-*s",
1288			INTERVAL_LEN - 1, "time",
1289			aggr_header_lens[config->aggr_mode],
1290			aggr_header_std[config->aggr_mode]);
1291		break;
1292	case AGGR_THREAD:
1293		fprintf(output, "#%*s %*s-%-*s",
1294			INTERVAL_LEN - 1, "time",
1295			COMM_LEN, "comm", PID_LEN, "pid");
1296		break;
1297	case AGGR_GLOBAL:
1298	default:
1299		if (!config->iostat_run)
1300			fprintf(output, "#%*s",
1301				INTERVAL_LEN - 1, "time");
1302	case AGGR_UNSET:
1303	case AGGR_MAX:
1304		break;
1305	}
1306
1307	if (config->metric_only)
1308		print_metric_headers(config, evlist, true);
1309	else
1310		fprintf(output, " %*s %*s events\n",
1311			COUNTS_LEN, "counts", config->unit_width, "unit");
1312}
1313
1314static void print_header_std(struct perf_stat_config *config,
1315			     struct target *_target, struct evlist *evlist,
1316			     int argc, const char **argv)
1317{
1318	FILE *output = config->output;
1319	int i;
1320
1321	fprintf(output, "\n");
1322	fprintf(output, " Performance counter stats for ");
1323	if (_target->bpf_str)
1324		fprintf(output, "\'BPF program(s) %s", _target->bpf_str);
1325	else if (_target->system_wide)
1326		fprintf(output, "\'system wide");
1327	else if (_target->cpu_list)
1328		fprintf(output, "\'CPU(s) %s", _target->cpu_list);
1329	else if (!target__has_task(_target)) {
1330		fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1331		for (i = 1; argv && (i < argc); i++)
1332			fprintf(output, " %s", argv[i]);
1333	} else if (_target->pid)
1334		fprintf(output, "process id \'%s", _target->pid);
1335	else
1336		fprintf(output, "thread id \'%s", _target->tid);
1337
1338	fprintf(output, "\'");
1339	if (config->run_count > 1)
1340		fprintf(output, " (%d runs)", config->run_count);
1341	fprintf(output, ":\n\n");
1342
1343	if (config->metric_only)
1344		print_metric_headers(config, evlist, false);
1345}
1346
1347static void print_header_csv(struct perf_stat_config *config,
1348			     struct target *_target __maybe_unused,
1349			     struct evlist *evlist,
1350			     int argc __maybe_unused,
1351			     const char **argv __maybe_unused)
1352{
1353	if (config->metric_only)
1354		print_metric_headers(config, evlist, true);
1355}
1356static void print_header_json(struct perf_stat_config *config,
1357			      struct target *_target __maybe_unused,
1358			      struct evlist *evlist,
1359			      int argc __maybe_unused,
1360			      const char **argv __maybe_unused)
1361{
1362	if (config->metric_only)
1363		print_metric_headers(config, evlist, true);
1364}
1365
1366static void print_header(struct perf_stat_config *config,
1367			 struct target *_target,
1368			 struct evlist *evlist,
1369			 int argc, const char **argv)
1370{
1371	static int num_print_iv;
1372
1373	fflush(stdout);
1374
1375	if (config->interval_clear)
1376		puts(CONSOLE_CLEAR);
1377
1378	if (num_print_iv == 0 || config->interval_clear) {
1379		if (config->json_output)
1380			print_header_json(config, _target, evlist, argc, argv);
1381		else if (config->csv_output)
1382			print_header_csv(config, _target, evlist, argc, argv);
1383		else if (config->interval)
1384			print_header_interval_std(config, _target, evlist, argc, argv);
1385		else
1386			print_header_std(config, _target, evlist, argc, argv);
1387	}
1388
1389	if (num_print_iv++ == 25)
1390		num_print_iv = 0;
1391}
1392
1393static int get_precision(double num)
1394{
1395	if (num > 1)
1396		return 0;
1397
1398	return lround(ceil(-log10(num)));
1399}
1400
1401static void print_table(struct perf_stat_config *config,
1402			FILE *output, int precision, double avg)
1403{
1404	char tmp[64];
1405	int idx, indent = 0;
1406
1407	scnprintf(tmp, 64, " %17.*f", precision, avg);
1408	while (tmp[indent] == ' ')
1409		indent++;
1410
1411	fprintf(output, "%*s# Table of individual measurements:\n", indent, "");
1412
1413	for (idx = 0; idx < config->run_count; idx++) {
1414		double run = (double) config->walltime_run[idx] / NSEC_PER_SEC;
1415		int h, n = 1 + abs((int) (100.0 * (run - avg)/run) / 5);
1416
1417		fprintf(output, " %17.*f (%+.*f) ",
1418			precision, run, precision, run - avg);
1419
1420		for (h = 0; h < n; h++)
1421			fprintf(output, "#");
1422
1423		fprintf(output, "\n");
1424	}
1425
1426	fprintf(output, "\n%*s# Final result:\n", indent, "");
1427}
1428
1429static double timeval2double(struct timeval *t)
1430{
1431	return t->tv_sec + (double) t->tv_usec/USEC_PER_SEC;
1432}
1433
1434static void print_footer(struct perf_stat_config *config)
1435{
1436	double avg = avg_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
1437	FILE *output = config->output;
1438
1439	if (config->interval || config->csv_output || config->json_output)
1440		return;
1441
1442	if (!config->null_run)
1443		fprintf(output, "\n");
1444
1445	if (config->run_count == 1) {
1446		fprintf(output, " %17.9f seconds time elapsed", avg);
1447
1448		if (config->ru_display) {
1449			double ru_utime = timeval2double(&config->ru_data.ru_utime);
1450			double ru_stime = timeval2double(&config->ru_data.ru_stime);
1451
1452			fprintf(output, "\n\n");
1453			fprintf(output, " %17.9f seconds user\n", ru_utime);
1454			fprintf(output, " %17.9f seconds sys\n", ru_stime);
1455		}
1456	} else {
1457		double sd = stddev_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
1458		/*
1459		 * Display at most 2 more significant
1460		 * digits than the stddev inaccuracy.
1461		 */
1462		int precision = get_precision(sd) + 2;
1463
1464		if (config->walltime_run_table)
1465			print_table(config, output, precision, avg);
1466
1467		fprintf(output, " %17.*f +- %.*f seconds time elapsed",
1468			precision, avg, precision, sd);
1469
1470		print_noise_pct(config, NULL, sd, avg, /*before_metric=*/false);
1471	}
1472	fprintf(output, "\n\n");
1473
1474	if (config->print_free_counters_hint && sysctl__nmi_watchdog_enabled())
1475		fprintf(output,
1476"Some events weren't counted. Try disabling the NMI watchdog:\n"
1477"	echo 0 > /proc/sys/kernel/nmi_watchdog\n"
1478"	perf stat ...\n"
1479"	echo 1 > /proc/sys/kernel/nmi_watchdog\n");
1480}
1481
1482static void print_percore(struct perf_stat_config *config,
1483			  struct evsel *counter, struct outstate *os)
1484{
1485	bool metric_only = config->metric_only;
1486	FILE *output = config->output;
1487	struct cpu_aggr_map *core_map;
1488	int aggr_idx, core_map_len = 0;
1489
1490	if (!config->aggr_map || !config->aggr_get_id)
1491		return;
1492
1493	if (config->percore_show_thread)
1494		return print_counter(config, counter, os);
1495
1496	/*
1497	 * core_map will hold the aggr_cpu_id for the cores that have been
1498	 * printed so that each core is printed just once.
1499	 */
1500	core_map = cpu_aggr_map__empty_new(config->aggr_map->nr);
1501	if (core_map == NULL) {
1502		fprintf(output, "Cannot allocate per-core aggr map for display\n");
1503		return;
1504	}
1505
1506	cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
1507		struct perf_cpu curr_cpu = config->aggr_map->map[aggr_idx].cpu;
1508		struct aggr_cpu_id core_id = aggr_cpu_id__core(curr_cpu, NULL);
1509		bool found = false;
1510
1511		for (int i = 0; i < core_map_len; i++) {
1512			if (aggr_cpu_id__equal(&core_map->map[i], &core_id)) {
1513				found = true;
1514				break;
1515			}
1516		}
1517		if (found)
1518			continue;
1519
1520		print_counter_aggrdata(config, counter, aggr_idx, os);
1521
1522		core_map->map[core_map_len++] = core_id;
1523	}
1524	free(core_map);
1525
1526	if (metric_only)
1527		fputc('\n', output);
1528}
1529
1530static void print_cgroup_counter(struct perf_stat_config *config, struct evlist *evlist,
1531				 struct outstate *os)
1532{
1533	struct evsel *counter;
1534
1535	evlist__for_each_entry(evlist, counter) {
1536		if (os->cgrp != counter->cgrp) {
1537			if (os->cgrp != NULL)
1538				print_metric_end(config, os);
1539
1540			os->cgrp = counter->cgrp;
1541			print_metric_begin(config, evlist, os, /*aggr_idx=*/0);
1542		}
1543
1544		print_counter(config, counter, os);
1545	}
1546	if (os->cgrp)
1547		print_metric_end(config, os);
1548}
1549
1550void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *config,
1551			    struct target *_target, struct timespec *ts,
1552			    int argc, const char **argv)
1553{
1554	bool metric_only = config->metric_only;
1555	struct evsel *counter;
1556	struct outstate os = {
1557		.fh = config->output,
1558		.first = true,
1559	};
1560
1561	evlist__uniquify_evsel_names(evlist, config);
1562
1563	if (config->iostat_run)
1564		evlist->selected = evlist__first(evlist);
1565
1566	if (config->interval)
1567		prepare_timestamp(config, &os, ts);
1568
1569	print_header(config, _target, evlist, argc, argv);
1570
1571	switch (config->aggr_mode) {
1572	case AGGR_CORE:
1573	case AGGR_CACHE:
1574	case AGGR_CLUSTER:
1575	case AGGR_DIE:
1576	case AGGR_SOCKET:
1577	case AGGR_NODE:
1578		if (config->cgroup_list)
1579			print_aggr_cgroup(config, evlist, &os);
1580		else
1581			print_aggr(config, evlist, &os);
1582		break;
1583	case AGGR_THREAD:
1584	case AGGR_GLOBAL:
1585		if (config->iostat_run) {
1586			iostat_print_counters(evlist, config, ts, os.timestamp,
1587					      (iostat_print_counter_t)print_counter, &os);
1588		} else if (config->cgroup_list) {
1589			print_cgroup_counter(config, evlist, &os);
1590		} else {
1591			print_metric_begin(config, evlist, &os, /*aggr_idx=*/0);
1592			evlist__for_each_entry(evlist, counter) {
1593				print_counter(config, counter, &os);
1594			}
1595			print_metric_end(config, &os);
1596		}
1597		break;
1598	case AGGR_NONE:
1599		if (metric_only)
1600			print_no_aggr_metric(config, evlist, &os);
1601		else {
1602			evlist__for_each_entry(evlist, counter) {
1603				if (counter->percore)
1604					print_percore(config, counter, &os);
1605				else
1606					print_counter(config, counter, &os);
1607			}
1608		}
1609		break;
1610	case AGGR_MAX:
1611	case AGGR_UNSET:
1612	default:
1613		break;
1614	}
1615
1616	print_footer(config);
1617
1618	fflush(config->output);
1619}