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v4.6
 
   1/*
   2 * builtin-stat.c
   3 *
   4 * Builtin stat command: Give a precise performance counters summary
   5 * overview about any workload, CPU or specific PID.
   6 *
   7 * Sample output:
   8
   9   $ perf stat ./hackbench 10
  10
  11  Time: 0.118
  12
  13  Performance counter stats for './hackbench 10':
  14
  15       1708.761321 task-clock                #   11.037 CPUs utilized
  16            41,190 context-switches          #    0.024 M/sec
  17             6,735 CPU-migrations            #    0.004 M/sec
  18            17,318 page-faults               #    0.010 M/sec
  19     5,205,202,243 cycles                    #    3.046 GHz
  20     3,856,436,920 stalled-cycles-frontend   #   74.09% frontend cycles idle
  21     1,600,790,871 stalled-cycles-backend    #   30.75% backend  cycles idle
  22     2,603,501,247 instructions              #    0.50  insns per cycle
  23                                             #    1.48  stalled cycles per insn
  24       484,357,498 branches                  #  283.455 M/sec
  25         6,388,934 branch-misses             #    1.32% of all branches
  26
  27        0.154822978  seconds time elapsed
  28
  29 *
  30 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
  31 *
  32 * Improvements and fixes by:
  33 *
  34 *   Arjan van de Ven <arjan@linux.intel.com>
  35 *   Yanmin Zhang <yanmin.zhang@intel.com>
  36 *   Wu Fengguang <fengguang.wu@intel.com>
  37 *   Mike Galbraith <efault@gmx.de>
  38 *   Paul Mackerras <paulus@samba.org>
  39 *   Jaswinder Singh Rajput <jaswinder@kernel.org>
  40 *
  41 * Released under the GPL v2. (and only v2, not any later version)
  42 */
  43
  44#include "perf.h"
  45#include "builtin.h"
 
  46#include "util/cgroup.h"
  47#include "util/util.h"
  48#include <subcmd/parse-options.h>
  49#include "util/parse-events.h"
  50#include "util/pmu.h"
  51#include "util/event.h"
  52#include "util/evlist.h"
 
  53#include "util/evsel.h"
  54#include "util/debug.h"
  55#include "util/color.h"
  56#include "util/stat.h"
  57#include "util/header.h"
  58#include "util/cpumap.h"
  59#include "util/thread.h"
  60#include "util/thread_map.h"
  61#include "util/counts.h"
 
  62#include "util/session.h"
  63#include "util/tool.h"
 
 
 
 
 
 
 
 
 
 
 
  64#include "asm/bug.h"
  65
 
 
 
 
 
  66#include <stdlib.h>
  67#include <sys/prctl.h>
 
  68#include <locale.h>
 
 
 
 
 
 
 
 
 
 
 
 
  69
  70#define DEFAULT_SEPARATOR	" "
  71#define CNTR_NOT_SUPPORTED	"<not supported>"
  72#define CNTR_NOT_COUNTED	"<not counted>"
  73
  74static void print_counters(struct timespec *ts, int argc, const char **argv);
  75
  76/* Default events used for perf stat -T */
  77static const char *transaction_attrs = {
  78	"task-clock,"
  79	"{"
  80	"instructions,"
  81	"cycles,"
  82	"cpu/cycles-t/,"
  83	"cpu/tx-start/,"
  84	"cpu/el-start/,"
  85	"cpu/cycles-ct/"
  86	"}"
  87};
  88
  89/* More limited version when the CPU does not have all events. */
  90static const char * transaction_limited_attrs = {
  91	"task-clock,"
  92	"{"
  93	"instructions,"
  94	"cycles,"
  95	"cpu/cycles-t/,"
  96	"cpu/tx-start/"
  97	"}"
  98};
  99
 100static struct perf_evlist	*evsel_list;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 101
 102static struct target target = {
 103	.uid	= UINT_MAX,
 104};
 105
 106typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
 107
 108static int			run_count			=  1;
 109static bool			no_inherit			= false;
 110static volatile pid_t		child_pid			= -1;
 111static bool			null_run			=  false;
 112static int			detailed_run			=  0;
 113static bool			transaction_run;
 114static bool			big_num				=  true;
 
 
 115static int			big_num_opt			=  -1;
 116static const char		*csv_sep			= NULL;
 117static bool			csv_output			= false;
 118static bool			group				= false;
 119static const char		*pre_cmd			= NULL;
 120static const char		*post_cmd			= NULL;
 121static bool			sync_run			= false;
 122static unsigned int		initial_delay			= 0;
 123static unsigned int		unit_width			= 4; /* strlen("unit") */
 124static bool			forever				= false;
 125static bool			metric_only			= false;
 126static struct timespec		ref_time;
 127static struct cpu_map		*aggr_map;
 128static aggr_get_id_t		aggr_get_id;
 129static bool			append_file;
 
 130static const char		*output_name;
 131static int			output_fd;
 
 132
 133struct perf_stat {
 134	bool			 record;
 135	struct perf_data_file	 file;
 136	struct perf_session	*session;
 137	u64			 bytes_written;
 138	struct perf_tool	 tool;
 139	bool			 maps_allocated;
 140	struct cpu_map		*cpus;
 141	struct thread_map	*threads;
 142	enum aggr_mode		 aggr_mode;
 143};
 144
 145static struct perf_stat		perf_stat;
 146#define STAT_RECORD		perf_stat.record
 147
 148static volatile int done = 0;
 149
 150static struct perf_stat_config stat_config = {
 151	.aggr_mode	= AGGR_GLOBAL,
 152	.scale		= true,
 
 
 
 
 
 
 
 
 
 153};
 154
 155static inline void diff_timespec(struct timespec *r, struct timespec *a,
 156				 struct timespec *b)
 157{
 158	r->tv_sec = a->tv_sec - b->tv_sec;
 159	if (a->tv_nsec < b->tv_nsec) {
 160		r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
 161		r->tv_sec--;
 162	} else {
 163		r->tv_nsec = a->tv_nsec - b->tv_nsec ;
 
 
 
 
 
 
 
 164	}
 165}
 166
 167static void perf_stat__reset_stats(void)
 168{
 169	perf_evlist__reset_stats(evsel_list);
 170	perf_stat__reset_shadow_stats();
 171}
 172
 173static int create_perf_stat_counter(struct perf_evsel *evsel)
 174{
 175	struct perf_event_attr *attr = &evsel->attr;
 176
 177	if (stat_config.scale)
 178		attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
 179				    PERF_FORMAT_TOTAL_TIME_RUNNING;
 180
 181	attr->inherit = !no_inherit;
 
 182
 183	/*
 184	 * Some events get initialized with sample_(period/type) set,
 185	 * like tracepoints. Clear it up for counting.
 186	 */
 187	attr->sample_period = 0;
 188
 189	/*
 190	 * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
 191	 * while avoiding that older tools show confusing messages.
 192	 *
 193	 * However for pipe sessions we need to keep it zero,
 194	 * because script's perf_evsel__check_attr is triggered
 195	 * by attr->sample_type != 0, and we can't run it on
 196	 * stat sessions.
 197	 */
 198	if (!(STAT_RECORD && perf_stat.file.is_pipe))
 199		attr->sample_type = PERF_SAMPLE_IDENTIFIER;
 200
 201	/*
 202	 * Disabling all counters initially, they will be enabled
 203	 * either manually by us or by kernel via enable_on_exec
 204	 * set later.
 205	 */
 206	if (perf_evsel__is_group_leader(evsel)) {
 207		attr->disabled = 1;
 
 
 
 
 208
 209		/*
 210		 * In case of initial_delay we enable tracee
 211		 * events manually.
 212		 */
 213		if (target__none(&target) && !initial_delay)
 214			attr->enable_on_exec = 1;
 215	}
 216
 217	if (target__has_cpu(&target))
 218		return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
 219
 220	return perf_evsel__open_per_thread(evsel, evsel_list->threads);
 221}
 222
 223/*
 224 * Does the counter have nsecs as a unit?
 225 */
 226static inline int nsec_counter(struct perf_evsel *evsel)
 227{
 228	if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
 229	    perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
 230		return 1;
 
 
 
 
 
 231
 232	return 0;
 
 
 
 233}
 234
 235static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
 236				     union perf_event *event,
 237				     struct perf_sample *sample __maybe_unused,
 238				     struct machine *machine __maybe_unused)
 239{
 240	if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) {
 241		pr_err("failed to write perf data, error: %m\n");
 242		return -1;
 243	}
 244
 245	perf_stat.bytes_written += event->header.size;
 246	return 0;
 247}
 248
 249static int write_stat_round_event(u64 tm, u64 type)
 250{
 251	return perf_event__synthesize_stat_round(NULL, tm, type,
 252						 process_synthesized_event,
 253						 NULL);
 254}
 255
 256#define WRITE_STAT_ROUND_EVENT(time, interval) \
 257	write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
 258
 259#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
 260
 261static int
 262perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
 263			     struct perf_counts_values *count)
 264{
 265	struct perf_sample_id *sid = SID(counter, cpu, thread);
 
 266
 267	return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
 268					   process_synthesized_event, NULL);
 269}
 270
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 271/*
 272 * Read out the results of a single counter:
 273 * do not aggregate counts across CPUs in system-wide mode
 274 */
 275static int read_counter(struct perf_evsel *counter)
 276{
 277	int nthreads = thread_map__nr(evsel_list->threads);
 278	int ncpus = perf_evsel__nr_cpus(counter);
 279	int cpu, thread;
 280
 281	if (!counter->supported)
 282		return -ENOENT;
 283
 284	if (counter->system_wide)
 285		nthreads = 1;
 286
 287	for (thread = 0; thread < nthreads; thread++) {
 288		for (cpu = 0; cpu < ncpus; cpu++) {
 289			struct perf_counts_values *count;
 290
 291			count = perf_counts(counter->counts, cpu, thread);
 292			if (perf_evsel__read(counter, cpu, thread, count))
 293				return -1;
 294
 295			if (STAT_RECORD) {
 296				if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
 297					pr_err("failed to write stat event\n");
 298					return -1;
 299				}
 
 
 
 
 
 
 
 
 
 
 
 
 
 300			}
 301		}
 
 
 
 
 
 
 
 
 
 302	}
 303
 304	return 0;
 305}
 306
 307static void read_counters(bool close_counters)
 308{
 309	struct perf_evsel *counter;
 
 310
 311	evlist__for_each(evsel_list, counter) {
 312		if (read_counter(counter))
 313			pr_debug("failed to read counter %s\n", counter->name);
 314
 315		if (perf_stat_process_counter(&stat_config, counter))
 316			pr_warning("failed to process counter %s\n", counter->name);
 
 
 
 
 
 
 
 
 
 
 317
 318		if (close_counters) {
 319			perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
 320					     thread_map__nr(evsel_list->threads));
 321		}
 322	}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 323}
 324
 325static void process_interval(void)
 326{
 327	struct timespec ts, rs;
 328
 329	read_counters(false);
 330
 331	clock_gettime(CLOCK_MONOTONIC, &ts);
 332	diff_timespec(&rs, &ts, &ref_time);
 333
 
 
 
 
 
 
 334	if (STAT_RECORD) {
 335		if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSECS_PER_SEC + rs.tv_nsec, INTERVAL))
 336			pr_err("failed to write stat round event\n");
 337	}
 338
 
 
 339	print_counters(&rs, 0, NULL);
 340}
 341
 342static void enable_counters(void)
 
 
 
 
 
 
 
 
 
 
 343{
 344	if (initial_delay)
 345		usleep(initial_delay * 1000);
 
 
 
 
 
 
 
 
 
 346
 347	/*
 348	 * We need to enable counters only if:
 349	 * - we don't have tracee (attaching to task or cpu)
 350	 * - we have initial delay configured
 351	 */
 352	if (!target__none(&target) || initial_delay)
 353		perf_evlist__enable(evsel_list);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 354}
 355
 356static volatile int workload_exec_errno;
 357
 358/*
 359 * perf_evlist__prepare_workload will send a SIGUSR1
 360 * if the fork fails, since we asked by setting its
 361 * want_signal to true.
 362 */
 363static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
 364					void *ucontext __maybe_unused)
 365{
 366	workload_exec_errno = info->si_value.sival_int;
 367}
 368
 369static bool has_unit(struct perf_evsel *counter)
 370{
 371	return counter->unit && *counter->unit;
 372}
 373
 374static bool has_scale(struct perf_evsel *counter)
 
 375{
 376	return counter->scale != 1;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 377}
 378
 379static int perf_stat_synthesize_config(bool is_pipe)
 380{
 381	struct perf_evsel *counter;
 382	int err;
 383
 384	if (is_pipe) {
 385		err = perf_event__synthesize_attrs(NULL, perf_stat.session,
 386						   process_synthesized_event);
 387		if (err < 0) {
 388			pr_err("Couldn't synthesize attrs.\n");
 389			return err;
 
 
 
 
 
 
 
 
 
 
 390		}
 391	}
 
 392
 393	/*
 394	 * Synthesize other events stuff not carried within
 395	 * attr event - unit, scale, name
 396	 */
 397	evlist__for_each(evsel_list, counter) {
 398		if (!counter->supported)
 399			continue;
 400
 401		/*
 402		 * Synthesize unit and scale only if it's defined.
 403		 */
 404		if (has_unit(counter)) {
 405			err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
 406			if (err < 0) {
 407				pr_err("Couldn't synthesize evsel unit.\n");
 408				return err;
 409			}
 410		}
 411
 412		if (has_scale(counter)) {
 413			err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
 414			if (err < 0) {
 415				pr_err("Couldn't synthesize evsel scale.\n");
 416				return err;
 417			}
 418		}
 419
 420		if (counter->own_cpus) {
 421			err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
 422			if (err < 0) {
 423				pr_err("Couldn't synthesize evsel scale.\n");
 424				return err;
 425			}
 426		}
 427
 428		/*
 429		 * Name is needed only for pipe output,
 430		 * perf.data carries event names.
 431		 */
 432		if (is_pipe) {
 433			err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
 434			if (err < 0) {
 435				pr_err("Couldn't synthesize evsel name.\n");
 436				return err;
 437			}
 438		}
 439	}
 440
 441	err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
 442						process_synthesized_event,
 443						NULL);
 444	if (err < 0) {
 445		pr_err("Couldn't synthesize thread map.\n");
 446		return err;
 447	}
 448
 449	err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
 450					     process_synthesized_event, NULL);
 451	if (err < 0) {
 452		pr_err("Couldn't synthesize thread map.\n");
 453		return err;
 454	}
 455
 456	err = perf_event__synthesize_stat_config(NULL, &stat_config,
 457						 process_synthesized_event, NULL);
 458	if (err < 0) {
 459		pr_err("Couldn't synthesize config.\n");
 460		return err;
 461	}
 462
 463	return 0;
 464}
 
 
 
 
 465
 466#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
 467
 468static int __store_counter_ids(struct perf_evsel *counter,
 469			       struct cpu_map *cpus,
 470			       struct thread_map *threads)
 471{
 472	int cpu, thread;
 473
 474	for (cpu = 0; cpu < cpus->nr; cpu++) {
 475		for (thread = 0; thread < threads->nr; thread++) {
 476			int fd = FD(counter, cpu, thread);
 477
 478			if (perf_evlist__id_add_fd(evsel_list, counter,
 479						   cpu, thread, fd) < 0)
 480				return -1;
 
 
 
 
 
 
 481		}
 482	}
 483
 484	return 0;
 485}
 486
 487static int store_counter_ids(struct perf_evsel *counter)
 
 
 
 
 
 
 488{
 489	struct cpu_map *cpus = counter->cpus;
 490	struct thread_map *threads = counter->threads;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 491
 492	if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
 493		return -ENOMEM;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 494
 495	return __store_counter_ids(counter, cpus, threads);
 
 
 
 
 
 496}
 497
 498static int __run_perf_stat(int argc, const char **argv)
 499{
 500	int interval = stat_config.interval;
 501	char msg[512];
 
 
 502	unsigned long long t0, t1;
 503	struct perf_evsel *counter;
 504	struct timespec ts;
 505	size_t l;
 506	int status = 0;
 507	const bool forks = (argc > 0);
 508	bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false;
 509
 510	if (interval) {
 511		ts.tv_sec  = interval / 1000;
 512		ts.tv_nsec = (interval % 1000) * 1000000;
 513	} else {
 514		ts.tv_sec  = 1;
 515		ts.tv_nsec = 0;
 516	}
 517
 518	if (forks) {
 519		if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
 520						  workload_exec_failed_signal) < 0) {
 521			perror("failed to prepare workload");
 522			return -1;
 523		}
 524		child_pid = evsel_list->workload.pid;
 525	}
 526
 527	if (group)
 528		perf_evlist__set_leader(evsel_list);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 529
 530	evlist__for_each(evsel_list, counter) {
 
 
 
 531try_again:
 532		if (create_perf_stat_counter(counter) < 0) {
 
 
 533			/*
 534			 * PPC returns ENXIO for HW counters until 2.6.37
 535			 * (behavior changed with commit b0a873e).
 
 
 
 536			 */
 537			if (errno == EINVAL || errno == ENOSYS ||
 538			    errno == ENOENT || errno == EOPNOTSUPP ||
 539			    errno == ENXIO) {
 540				if (verbose)
 541					ui__warning("%s event is not supported by the kernel.\n",
 542						    perf_evsel__name(counter));
 543				counter->supported = false;
 544
 545				if ((counter->leader != counter) ||
 546				    !(counter->leader->nr_members > 1))
 547					continue;
 548			} else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
 549                                if (verbose)
 550                                        ui__warning("%s\n", msg);
 551                                goto try_again;
 552                        }
 553
 554			perf_evsel__open_strerror(counter, &target,
 555						  errno, msg, sizeof(msg));
 556			ui__error("%s\n", msg);
 557
 558			if (child_pid != -1)
 559				kill(child_pid, SIGTERM);
 
 
 
 
 
 
 
 
 560
 561			return -1;
 562		}
 563		counter->supported = true;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 564
 565		l = strlen(counter->unit);
 566		if (l > unit_width)
 567			unit_width = l;
 568
 569		if (STAT_RECORD && store_counter_ids(counter))
 
 570			return -1;
 571	}
 572
 573	if (perf_evlist__apply_filters(evsel_list, &counter)) {
 574		error("failed to set filter \"%s\" on event %s with %d (%s)\n",
 575			counter->filter, perf_evsel__name(counter), errno,
 576			strerror_r(errno, msg, sizeof(msg)));
 577		return -1;
 578	}
 579
 580	if (STAT_RECORD) {
 581		int err, fd = perf_data_file__fd(&perf_stat.file);
 582
 583		if (is_pipe) {
 584			err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file));
 585		} else {
 586			err = perf_session__write_header(perf_stat.session, evsel_list,
 587							 fd, false);
 588		}
 589
 590		if (err < 0)
 591			return err;
 592
 593		err = perf_stat_synthesize_config(is_pipe);
 
 594		if (err < 0)
 595			return err;
 596	}
 597
 598	/*
 599	 * Enable counters and exec the command:
 600	 */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 601	t0 = rdclock();
 602	clock_gettime(CLOCK_MONOTONIC, &ref_time);
 603
 604	if (forks) {
 605		perf_evlist__start_workload(evsel_list);
 606		enable_counters();
 607
 608		if (interval) {
 609			while (!waitpid(child_pid, &status, WNOHANG)) {
 610				nanosleep(&ts, NULL);
 611				process_interval();
 612			}
 613		}
 614		wait(&status);
 615
 616		if (workload_exec_errno) {
 617			const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
 618			pr_err("Workload failed: %s\n", emsg);
 619			return -1;
 620		}
 621
 622		if (WIFSIGNALED(status))
 623			psignal(WTERMSIG(status), argv[0]);
 624	} else {
 625		enable_counters();
 626		while (!done) {
 627			nanosleep(&ts, NULL);
 628			if (interval)
 629				process_interval();
 630		}
 631	}
 632
 
 
 633	t1 = rdclock();
 634
 635	update_stats(&walltime_nsecs_stats, t1 - t0);
 
 636
 637	read_counters(true);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 638
 639	return WEXITSTATUS(status);
 640}
 641
 642static int run_perf_stat(int argc, const char **argv)
 643{
 644	int ret;
 645
 646	if (pre_cmd) {
 647		ret = system(pre_cmd);
 648		if (ret)
 649			return ret;
 650	}
 651
 652	if (sync_run)
 653		sync();
 654
 655	ret = __run_perf_stat(argc, argv);
 656	if (ret)
 657		return ret;
 658
 659	if (post_cmd) {
 660		ret = system(post_cmd);
 661		if (ret)
 662			return ret;
 663	}
 664
 665	return ret;
 666}
 667
 668static void print_running(u64 run, u64 ena)
 669{
 670	if (csv_output) {
 671		fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
 672					csv_sep,
 673					run,
 674					csv_sep,
 675					ena ? 100.0 * run / ena : 100.0);
 676	} else if (run != ena) {
 677		fprintf(stat_config.output, "  (%.2f%%)", 100.0 * run / ena);
 678	}
 679}
 680
 681static void print_noise_pct(double total, double avg)
 682{
 683	double pct = rel_stddev_stats(total, avg);
 684
 685	if (csv_output)
 686		fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
 687	else if (pct)
 688		fprintf(stat_config.output, "  ( +-%6.2f%% )", pct);
 689}
 690
 691static void print_noise(struct perf_evsel *evsel, double avg)
 692{
 693	struct perf_stat_evsel *ps;
 694
 695	if (run_count == 1)
 696		return;
 697
 698	ps = evsel->priv;
 699	print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
 700}
 701
 702static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
 703{
 704	switch (stat_config.aggr_mode) {
 705	case AGGR_CORE:
 706		fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
 707			cpu_map__id_to_socket(id),
 708			csv_output ? 0 : -8,
 709			cpu_map__id_to_cpu(id),
 710			csv_sep,
 711			csv_output ? 0 : 4,
 712			nr,
 713			csv_sep);
 714		break;
 715	case AGGR_SOCKET:
 716		fprintf(stat_config.output, "S%*d%s%*d%s",
 717			csv_output ? 0 : -5,
 718			id,
 719			csv_sep,
 720			csv_output ? 0 : 4,
 721			nr,
 722			csv_sep);
 723			break;
 724	case AGGR_NONE:
 725		fprintf(stat_config.output, "CPU%*d%s",
 726			csv_output ? 0 : -4,
 727			perf_evsel__cpus(evsel)->map[id], csv_sep);
 728		break;
 729	case AGGR_THREAD:
 730		fprintf(stat_config.output, "%*s-%*d%s",
 731			csv_output ? 0 : 16,
 732			thread_map__comm(evsel->threads, id),
 733			csv_output ? 0 : -8,
 734			thread_map__pid(evsel->threads, id),
 735			csv_sep);
 736		break;
 737	case AGGR_GLOBAL:
 738	case AGGR_UNSET:
 739	default:
 740		break;
 741	}
 742}
 743
 744struct outstate {
 745	FILE *fh;
 746	bool newline;
 747	const char *prefix;
 748	int  nfields;
 749	int  id, nr;
 750	struct perf_evsel *evsel;
 751};
 752
 753#define METRIC_LEN  35
 754
 755static void new_line_std(void *ctx)
 756{
 757	struct outstate *os = ctx;
 758
 759	os->newline = true;
 760}
 761
 762static void do_new_line_std(struct outstate *os)
 763{
 764	fputc('\n', os->fh);
 765	fputs(os->prefix, os->fh);
 766	aggr_printout(os->evsel, os->id, os->nr);
 767	if (stat_config.aggr_mode == AGGR_NONE)
 768		fprintf(os->fh, "        ");
 769	fprintf(os->fh, "                                                 ");
 770}
 771
 772static void print_metric_std(void *ctx, const char *color, const char *fmt,
 773			     const char *unit, double val)
 774{
 775	struct outstate *os = ctx;
 776	FILE *out = os->fh;
 777	int n;
 778	bool newline = os->newline;
 779
 780	os->newline = false;
 781
 782	if (unit == NULL || fmt == NULL) {
 783		fprintf(out, "%-*s", METRIC_LEN, "");
 784		return;
 785	}
 786
 787	if (newline)
 788		do_new_line_std(os);
 789
 790	n = fprintf(out, " # ");
 791	if (color)
 792		n += color_fprintf(out, color, fmt, val);
 793	else
 794		n += fprintf(out, fmt, val);
 795	fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
 796}
 797
 798static void new_line_csv(void *ctx)
 799{
 800	struct outstate *os = ctx;
 801	int i;
 802
 803	fputc('\n', os->fh);
 804	if (os->prefix)
 805		fprintf(os->fh, "%s%s", os->prefix, csv_sep);
 806	aggr_printout(os->evsel, os->id, os->nr);
 807	for (i = 0; i < os->nfields; i++)
 808		fputs(csv_sep, os->fh);
 809}
 810
 811static void print_metric_csv(void *ctx,
 812			     const char *color __maybe_unused,
 813			     const char *fmt, const char *unit, double val)
 814{
 815	struct outstate *os = ctx;
 816	FILE *out = os->fh;
 817	char buf[64], *vals, *ends;
 818
 819	if (unit == NULL || fmt == NULL) {
 820		fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
 821		return;
 822	}
 823	snprintf(buf, sizeof(buf), fmt, val);
 824	vals = buf;
 825	while (isspace(*vals))
 826		vals++;
 827	ends = vals;
 828	while (isdigit(*ends) || *ends == '.')
 829		ends++;
 830	*ends = 0;
 831	while (isspace(*unit))
 832		unit++;
 833	fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
 834}
 835
 836#define METRIC_ONLY_LEN 20
 837
 838/* Filter out some columns that don't work well in metrics only mode */
 839
 840static bool valid_only_metric(const char *unit)
 841{
 842	if (!unit)
 843		return false;
 844	if (strstr(unit, "/sec") ||
 845	    strstr(unit, "hz") ||
 846	    strstr(unit, "Hz") ||
 847	    strstr(unit, "CPUs utilized"))
 848		return false;
 849	return true;
 850}
 851
 852static const char *fixunit(char *buf, struct perf_evsel *evsel,
 853			   const char *unit)
 854{
 855	if (!strncmp(unit, "of all", 6)) {
 856		snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
 857			 unit);
 858		return buf;
 859	}
 860	return unit;
 861}
 862
 863static void print_metric_only(void *ctx, const char *color, const char *fmt,
 864			      const char *unit, double val)
 865{
 866	struct outstate *os = ctx;
 867	FILE *out = os->fh;
 868	int n;
 869	char buf[1024];
 870	unsigned mlen = METRIC_ONLY_LEN;
 871
 872	if (!valid_only_metric(unit))
 873		return;
 874	unit = fixunit(buf, os->evsel, unit);
 875	if (color)
 876		n = color_fprintf(out, color, fmt, val);
 877	else
 878		n = fprintf(out, fmt, val);
 879	if (n > METRIC_ONLY_LEN)
 880		n = METRIC_ONLY_LEN;
 881	if (mlen < strlen(unit))
 882		mlen = strlen(unit) + 1;
 883	fprintf(out, "%*s", mlen - n, "");
 884}
 885
 886static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
 887				  const char *fmt,
 888				  const char *unit, double val)
 889{
 890	struct outstate *os = ctx;
 891	FILE *out = os->fh;
 892	char buf[64], *vals, *ends;
 893	char tbuf[1024];
 894
 895	if (!valid_only_metric(unit))
 896		return;
 897	unit = fixunit(tbuf, os->evsel, unit);
 898	snprintf(buf, sizeof buf, fmt, val);
 899	vals = buf;
 900	while (isspace(*vals))
 901		vals++;
 902	ends = vals;
 903	while (isdigit(*ends) || *ends == '.')
 904		ends++;
 905	*ends = 0;
 906	fprintf(out, "%s%s", vals, csv_sep);
 907}
 908
 909static void new_line_metric(void *ctx __maybe_unused)
 910{
 911}
 912
 913static void print_metric_header(void *ctx, const char *color __maybe_unused,
 914				const char *fmt __maybe_unused,
 915				const char *unit, double val __maybe_unused)
 916{
 917	struct outstate *os = ctx;
 918	char tbuf[1024];
 919
 920	if (!valid_only_metric(unit))
 921		return;
 922	unit = fixunit(tbuf, os->evsel, unit);
 923	if (csv_output)
 924		fprintf(os->fh, "%s%s", unit, csv_sep);
 925	else
 926		fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
 927}
 928
 929static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
 930{
 931	FILE *output = stat_config.output;
 932	double msecs = avg / 1e6;
 933	const char *fmt_v, *fmt_n;
 934	char name[25];
 935
 936	fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
 937	fmt_n = csv_output ? "%s" : "%-25s";
 938
 939	aggr_printout(evsel, id, nr);
 940
 941	scnprintf(name, sizeof(name), "%s%s",
 942		  perf_evsel__name(evsel), csv_output ? "" : " (msec)");
 943
 944	fprintf(output, fmt_v, msecs, csv_sep);
 945
 946	if (csv_output)
 947		fprintf(output, "%s%s", evsel->unit, csv_sep);
 948	else
 949		fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
 950
 951	fprintf(output, fmt_n, name);
 952
 953	if (evsel->cgrp)
 954		fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
 955}
 956
 957static int first_shadow_cpu(struct perf_evsel *evsel, int id)
 958{
 959	int i;
 960
 961	if (!aggr_get_id)
 962		return 0;
 963
 964	if (stat_config.aggr_mode == AGGR_NONE)
 965		return id;
 966
 967	if (stat_config.aggr_mode == AGGR_GLOBAL)
 968		return 0;
 969
 970	for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
 971		int cpu2 = perf_evsel__cpus(evsel)->map[i];
 972
 973		if (aggr_get_id(evsel_list->cpus, cpu2) == id)
 974			return cpu2;
 975	}
 976	return 0;
 977}
 978
 979static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
 980{
 981	FILE *output = stat_config.output;
 982	double sc =  evsel->scale;
 983	const char *fmt;
 984
 985	if (csv_output) {
 986		fmt = sc != 1.0 ?  "%.2f%s" : "%.0f%s";
 987	} else {
 988		if (big_num)
 989			fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s";
 990		else
 991			fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
 992	}
 993
 994	aggr_printout(evsel, id, nr);
 995
 996	fprintf(output, fmt, avg, csv_sep);
 997
 998	if (evsel->unit)
 999		fprintf(output, "%-*s%s",
1000			csv_output ? 0 : unit_width,
1001			evsel->unit, csv_sep);
1002
1003	fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1004
1005	if (evsel->cgrp)
1006		fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1007}
1008
1009static void printout(int id, int nr, struct perf_evsel *counter, double uval,
1010		     char *prefix, u64 run, u64 ena, double noise)
1011{
1012	struct perf_stat_output_ctx out;
1013	struct outstate os = {
1014		.fh = stat_config.output,
1015		.prefix = prefix ? prefix : "",
1016		.id = id,
1017		.nr = nr,
1018		.evsel = counter,
1019	};
1020	print_metric_t pm = print_metric_std;
1021	void (*nl)(void *);
1022
1023	if (metric_only) {
1024		nl = new_line_metric;
1025		if (csv_output)
1026			pm = print_metric_only_csv;
1027		else
1028			pm = print_metric_only;
1029	} else
1030		nl = new_line_std;
1031
1032	if (csv_output && !metric_only) {
1033		static int aggr_fields[] = {
1034			[AGGR_GLOBAL] = 0,
1035			[AGGR_THREAD] = 1,
1036			[AGGR_NONE] = 1,
1037			[AGGR_SOCKET] = 2,
1038			[AGGR_CORE] = 2,
1039		};
1040
1041		pm = print_metric_csv;
1042		nl = new_line_csv;
1043		os.nfields = 3;
1044		os.nfields += aggr_fields[stat_config.aggr_mode];
1045		if (counter->cgrp)
1046			os.nfields++;
1047	}
1048	if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
1049		if (metric_only) {
1050			pm(&os, NULL, "", "", 0);
1051			return;
1052		}
1053		aggr_printout(counter, id, nr);
1054
1055		fprintf(stat_config.output, "%*s%s",
1056			csv_output ? 0 : 18,
1057			counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1058			csv_sep);
1059
1060		fprintf(stat_config.output, "%-*s%s",
1061			csv_output ? 0 : unit_width,
1062			counter->unit, csv_sep);
1063
1064		fprintf(stat_config.output, "%*s",
1065			csv_output ? 0 : -25,
1066			perf_evsel__name(counter));
1067
1068		if (counter->cgrp)
1069			fprintf(stat_config.output, "%s%s",
1070				csv_sep, counter->cgrp->name);
1071
1072		if (!csv_output)
1073			pm(&os, NULL, NULL, "", 0);
1074		print_noise(counter, noise);
1075		print_running(run, ena);
1076		if (csv_output)
1077			pm(&os, NULL, NULL, "", 0);
1078		return;
1079	}
1080
1081	if (metric_only)
1082		/* nothing */;
1083	else if (nsec_counter(counter))
1084		nsec_printout(id, nr, counter, uval);
1085	else
1086		abs_printout(id, nr, counter, uval);
1087
1088	out.print_metric = pm;
1089	out.new_line = nl;
1090	out.ctx = &os;
1091
1092	if (csv_output && !metric_only) {
1093		print_noise(counter, noise);
1094		print_running(run, ena);
1095	}
1096
1097	perf_stat__print_shadow_stats(counter, uval,
1098				first_shadow_cpu(counter, id),
1099				&out);
1100	if (!csv_output && !metric_only) {
1101		print_noise(counter, noise);
1102		print_running(run, ena);
1103	}
1104}
1105
1106static void aggr_update_shadow(void)
1107{
1108	int cpu, s2, id, s;
1109	u64 val;
1110	struct perf_evsel *counter;
1111
1112	for (s = 0; s < aggr_map->nr; s++) {
1113		id = aggr_map->map[s];
1114		evlist__for_each(evsel_list, counter) {
1115			val = 0;
1116			for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1117				s2 = aggr_get_id(evsel_list->cpus, cpu);
1118				if (s2 != id)
1119					continue;
1120				val += perf_counts(counter->counts, cpu, 0)->val;
1121			}
1122			val = val * counter->scale;
1123			perf_stat__update_shadow_stats(counter, &val,
1124						       first_shadow_cpu(counter, id));
1125		}
1126	}
1127}
1128
1129static void print_aggr(char *prefix)
1130{
1131	FILE *output = stat_config.output;
1132	struct perf_evsel *counter;
1133	int cpu, s, s2, id, nr;
1134	double uval;
1135	u64 ena, run, val;
1136	bool first;
1137
1138	if (!(aggr_map || aggr_get_id))
1139		return;
1140
1141	aggr_update_shadow();
1142
1143	/*
1144	 * With metric_only everything is on a single line.
1145	 * Without each counter has its own line.
1146	 */
1147	for (s = 0; s < aggr_map->nr; s++) {
1148		if (prefix && metric_only)
1149			fprintf(output, "%s", prefix);
1150
1151		id = aggr_map->map[s];
1152		first = true;
1153		evlist__for_each(evsel_list, counter) {
1154			val = ena = run = 0;
1155			nr = 0;
1156			for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1157				s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
1158				if (s2 != id)
1159					continue;
1160				val += perf_counts(counter->counts, cpu, 0)->val;
1161				ena += perf_counts(counter->counts, cpu, 0)->ena;
1162				run += perf_counts(counter->counts, cpu, 0)->run;
1163				nr++;
1164			}
1165			if (first && metric_only) {
1166				first = false;
1167				aggr_printout(counter, id, nr);
1168			}
1169			if (prefix && !metric_only)
1170				fprintf(output, "%s", prefix);
1171
1172			uval = val * counter->scale;
1173			printout(id, nr, counter, uval, prefix, run, ena, 1.0);
1174			if (!metric_only)
1175				fputc('\n', output);
1176		}
1177		if (metric_only)
1178			fputc('\n', output);
1179	}
1180}
1181
1182static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
1183{
1184	FILE *output = stat_config.output;
1185	int nthreads = thread_map__nr(counter->threads);
1186	int ncpus = cpu_map__nr(counter->cpus);
1187	int cpu, thread;
1188	double uval;
1189
1190	for (thread = 0; thread < nthreads; thread++) {
1191		u64 ena = 0, run = 0, val = 0;
1192
1193		for (cpu = 0; cpu < ncpus; cpu++) {
1194			val += perf_counts(counter->counts, cpu, thread)->val;
1195			ena += perf_counts(counter->counts, cpu, thread)->ena;
1196			run += perf_counts(counter->counts, cpu, thread)->run;
1197		}
1198
1199		if (prefix)
1200			fprintf(output, "%s", prefix);
1201
1202		uval = val * counter->scale;
1203		printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
1204		fputc('\n', output);
1205	}
1206}
1207
1208/*
1209 * Print out the results of a single counter:
1210 * aggregated counts in system-wide mode
1211 */
1212static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1213{
1214	FILE *output = stat_config.output;
1215	struct perf_stat_evsel *ps = counter->priv;
1216	double avg = avg_stats(&ps->res_stats[0]);
1217	double uval;
1218	double avg_enabled, avg_running;
1219
1220	avg_enabled = avg_stats(&ps->res_stats[1]);
1221	avg_running = avg_stats(&ps->res_stats[2]);
1222
1223	if (prefix && !metric_only)
1224		fprintf(output, "%s", prefix);
1225
1226	uval = avg * counter->scale;
1227	printout(-1, 0, counter, uval, prefix, avg_running, avg_enabled, avg);
1228	if (!metric_only)
1229		fprintf(output, "\n");
1230}
1231
1232/*
1233 * Print out the results of a single counter:
1234 * does not use aggregated count in system-wide
1235 */
1236static void print_counter(struct perf_evsel *counter, char *prefix)
1237{
1238	FILE *output = stat_config.output;
1239	u64 ena, run, val;
1240	double uval;
1241	int cpu;
1242
1243	for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1244		val = perf_counts(counter->counts, cpu, 0)->val;
1245		ena = perf_counts(counter->counts, cpu, 0)->ena;
1246		run = perf_counts(counter->counts, cpu, 0)->run;
1247
1248		if (prefix)
1249			fprintf(output, "%s", prefix);
1250
1251		uval = val * counter->scale;
1252		printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1253
1254		fputc('\n', output);
1255	}
1256}
1257
1258static void print_no_aggr_metric(char *prefix)
1259{
1260	int cpu;
1261	int nrcpus = 0;
1262	struct perf_evsel *counter;
1263	u64 ena, run, val;
1264	double uval;
1265
1266	nrcpus = evsel_list->cpus->nr;
1267	for (cpu = 0; cpu < nrcpus; cpu++) {
1268		bool first = true;
1269
1270		if (prefix)
1271			fputs(prefix, stat_config.output);
1272		evlist__for_each(evsel_list, counter) {
1273			if (first) {
1274				aggr_printout(counter, cpu, 0);
1275				first = false;
1276			}
1277			val = perf_counts(counter->counts, cpu, 0)->val;
1278			ena = perf_counts(counter->counts, cpu, 0)->ena;
1279			run = perf_counts(counter->counts, cpu, 0)->run;
1280
1281			uval = val * counter->scale;
1282			printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1283		}
1284		fputc('\n', stat_config.output);
1285	}
1286}
1287
1288static int aggr_header_lens[] = {
1289	[AGGR_CORE] = 18,
1290	[AGGR_SOCKET] = 12,
1291	[AGGR_NONE] = 6,
1292	[AGGR_THREAD] = 24,
1293	[AGGR_GLOBAL] = 0,
1294};
1295
1296static void print_metric_headers(char *prefix)
1297{
1298	struct perf_stat_output_ctx out;
1299	struct perf_evsel *counter;
1300	struct outstate os = {
1301		.fh = stat_config.output
1302	};
1303
1304	if (prefix)
1305		fprintf(stat_config.output, "%s", prefix);
1306
1307	if (!csv_output)
1308		fprintf(stat_config.output, "%*s",
1309			aggr_header_lens[stat_config.aggr_mode], "");
1310
1311	/* Print metrics headers only */
1312	evlist__for_each(evsel_list, counter) {
1313		os.evsel = counter;
1314		out.ctx = &os;
1315		out.print_metric = print_metric_header;
1316		out.new_line = new_line_metric;
1317		os.evsel = counter;
1318		perf_stat__print_shadow_stats(counter, 0,
1319					      0,
1320					      &out);
1321	}
1322	fputc('\n', stat_config.output);
1323}
1324
1325static void print_interval(char *prefix, struct timespec *ts)
1326{
1327	FILE *output = stat_config.output;
1328	static int num_print_interval;
1329
1330	sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
1331
1332	if (num_print_interval == 0 && !csv_output && !metric_only) {
1333		switch (stat_config.aggr_mode) {
1334		case AGGR_SOCKET:
1335			fprintf(output, "#           time socket cpus             counts %*s events\n", unit_width, "unit");
1336			break;
1337		case AGGR_CORE:
1338			fprintf(output, "#           time core         cpus             counts %*s events\n", unit_width, "unit");
1339			break;
1340		case AGGR_NONE:
1341			fprintf(output, "#           time CPU                counts %*s events\n", unit_width, "unit");
1342			break;
1343		case AGGR_THREAD:
1344			fprintf(output, "#           time             comm-pid                  counts %*s events\n", unit_width, "unit");
1345			break;
1346		case AGGR_GLOBAL:
1347		default:
1348			fprintf(output, "#           time             counts %*s events\n", unit_width, "unit");
1349		case AGGR_UNSET:
1350			break;
1351		}
1352	}
1353
1354	if (++num_print_interval == 25)
1355		num_print_interval = 0;
1356}
1357
1358static void print_header(int argc, const char **argv)
1359{
1360	FILE *output = stat_config.output;
1361	int i;
1362
1363	fflush(stdout);
1364
1365	if (!csv_output) {
1366		fprintf(output, "\n");
1367		fprintf(output, " Performance counter stats for ");
1368		if (target.system_wide)
1369			fprintf(output, "\'system wide");
1370		else if (target.cpu_list)
1371			fprintf(output, "\'CPU(s) %s", target.cpu_list);
1372		else if (!target__has_task(&target)) {
1373			fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1374			for (i = 1; argv && (i < argc); i++)
1375				fprintf(output, " %s", argv[i]);
1376		} else if (target.pid)
1377			fprintf(output, "process id \'%s", target.pid);
1378		else
1379			fprintf(output, "thread id \'%s", target.tid);
1380
1381		fprintf(output, "\'");
1382		if (run_count > 1)
1383			fprintf(output, " (%d runs)", run_count);
1384		fprintf(output, ":\n\n");
1385	}
1386}
1387
1388static void print_footer(void)
1389{
1390	FILE *output = stat_config.output;
1391
1392	if (!null_run)
1393		fprintf(output, "\n");
1394	fprintf(output, " %17.9f seconds time elapsed",
1395			avg_stats(&walltime_nsecs_stats)/1e9);
1396	if (run_count > 1) {
1397		fprintf(output, "                                        ");
1398		print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1399				avg_stats(&walltime_nsecs_stats));
1400	}
1401	fprintf(output, "\n\n");
1402}
1403
1404static void print_counters(struct timespec *ts, int argc, const char **argv)
1405{
1406	int interval = stat_config.interval;
1407	struct perf_evsel *counter;
1408	char buf[64], *prefix = NULL;
1409
1410	/* Do not print anything if we record to the pipe. */
1411	if (STAT_RECORD && perf_stat.file.is_pipe)
 
 
1412		return;
1413
1414	if (interval)
1415		print_interval(prefix = buf, ts);
1416	else
1417		print_header(argc, argv);
1418
1419	if (metric_only) {
1420		static int num_print_iv;
1421
1422		if (num_print_iv == 0)
1423			print_metric_headers(prefix);
1424		if (num_print_iv++ == 25)
1425			num_print_iv = 0;
1426		if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
1427			fprintf(stat_config.output, "%s", prefix);
1428	}
1429
1430	switch (stat_config.aggr_mode) {
1431	case AGGR_CORE:
1432	case AGGR_SOCKET:
1433		print_aggr(prefix);
1434		break;
1435	case AGGR_THREAD:
1436		evlist__for_each(evsel_list, counter)
1437			print_aggr_thread(counter, prefix);
1438		break;
1439	case AGGR_GLOBAL:
1440		evlist__for_each(evsel_list, counter)
1441			print_counter_aggr(counter, prefix);
1442		if (metric_only)
1443			fputc('\n', stat_config.output);
1444		break;
1445	case AGGR_NONE:
1446		if (metric_only)
1447			print_no_aggr_metric(prefix);
1448		else {
1449			evlist__for_each(evsel_list, counter)
1450				print_counter(counter, prefix);
1451		}
1452		break;
1453	case AGGR_UNSET:
1454	default:
1455		break;
1456	}
1457
1458	if (!interval && !csv_output)
1459		print_footer();
1460
1461	fflush(stat_config.output);
1462}
1463
1464static volatile int signr = -1;
1465
1466static void skip_signal(int signo)
1467{
1468	if ((child_pid == -1) || stat_config.interval)
1469		done = 1;
1470
1471	signr = signo;
1472	/*
1473	 * render child_pid harmless
1474	 * won't send SIGTERM to a random
1475	 * process in case of race condition
1476	 * and fast PID recycling
1477	 */
1478	child_pid = -1;
1479}
1480
1481static void sig_atexit(void)
1482{
1483	sigset_t set, oset;
1484
1485	/*
1486	 * avoid race condition with SIGCHLD handler
1487	 * in skip_signal() which is modifying child_pid
1488	 * goal is to avoid send SIGTERM to a random
1489	 * process
1490	 */
1491	sigemptyset(&set);
1492	sigaddset(&set, SIGCHLD);
1493	sigprocmask(SIG_BLOCK, &set, &oset);
1494
1495	if (child_pid != -1)
1496		kill(child_pid, SIGTERM);
1497
1498	sigprocmask(SIG_SETMASK, &oset, NULL);
1499
1500	if (signr == -1)
1501		return;
1502
1503	signal(signr, SIG_DFL);
1504	kill(getpid(), signr);
1505}
1506
 
 
 
 
 
 
 
 
 
 
1507static int stat__set_big_num(const struct option *opt __maybe_unused,
1508			     const char *s __maybe_unused, int unset)
1509{
1510	big_num_opt = unset ? 0 : 1;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1511	return 0;
1512}
1513
1514static const struct option stat_options[] = {
1515	OPT_BOOLEAN('T', "transaction", &transaction_run,
1516		    "hardware transaction statistics"),
1517	OPT_CALLBACK('e', "event", &evsel_list, "event",
1518		     "event selector. use 'perf list' to list available events",
1519		     parse_events_option),
1520	OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1521		     "event filter", parse_filter),
1522	OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1523		    "child tasks do not inherit counters"),
1524	OPT_STRING('p', "pid", &target.pid, "pid",
1525		   "stat events on existing process id"),
1526	OPT_STRING('t', "tid", &target.tid, "tid",
1527		   "stat events on existing thread id"),
 
 
 
 
 
 
 
 
1528	OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1529		    "system-wide collection from all CPUs"),
1530	OPT_BOOLEAN('g', "group", &group,
1531		    "put the counters into a counter group"),
1532	OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
1533	OPT_INCR('v', "verbose", &verbose,
1534		    "be more verbose (show counter open errors, etc)"),
1535	OPT_INTEGER('r', "repeat", &run_count,
1536		    "repeat command and print average + stddev (max: 100, forever: 0)"),
1537	OPT_BOOLEAN('n', "null", &null_run,
 
 
1538		    "null run - dont start any counters"),
1539	OPT_INCR('d', "detailed", &detailed_run,
1540		    "detailed run - start a lot of events"),
1541	OPT_BOOLEAN('S', "sync", &sync_run,
1542		    "call sync() before starting a run"),
1543	OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1544			   "print large numbers with thousands\' separators",
1545			   stat__set_big_num),
1546	OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1547		    "list of cpus to monitor in system-wide"),
1548	OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1549		    "disable CPU count aggregation", AGGR_NONE),
1550	OPT_STRING('x', "field-separator", &csv_sep, "separator",
 
 
 
1551		   "print counts with custom separator"),
 
 
1552	OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1553		     "monitor event in cgroup name only", parse_cgroups),
 
 
1554	OPT_STRING('o', "output", &output_name, "file", "output file name"),
1555	OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1556	OPT_INTEGER(0, "log-fd", &output_fd,
1557		    "log output to fd, instead of stderr"),
1558	OPT_STRING(0, "pre", &pre_cmd, "command",
1559			"command to run prior to the measured command"),
1560	OPT_STRING(0, "post", &post_cmd, "command",
1561			"command to run after to the measured command"),
1562	OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1563		    "print counts at regular interval in ms (>= 10)"),
 
 
 
 
 
 
 
1564	OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1565		     "aggregate counts per processor socket", AGGR_SOCKET),
 
 
1566	OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1567		     "aggregate counts per physical processor core", AGGR_CORE),
1568	OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1569		     "aggregate counts per thread", AGGR_THREAD),
1570	OPT_UINTEGER('D', "delay", &initial_delay,
1571		     "ms to wait before starting measurement after program start"),
1572	OPT_BOOLEAN(0, "metric-only", &metric_only,
1573			"Only print computed metrics. No raw values"),
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1574	OPT_END()
1575};
1576
1577static int perf_stat__get_socket(struct cpu_map *map, int cpu)
 
 
 
 
 
 
 
 
 
 
 
 
1578{
1579	return cpu_map__get_socket(map, cpu, NULL);
1580}
1581
1582static int perf_stat__get_core(struct cpu_map *map, int cpu)
 
1583{
1584	return cpu_map__get_core(map, cpu, NULL);
1585}
1586
1587static int cpu_map__get_max(struct cpu_map *map)
 
1588{
1589	int i, max = -1;
 
1590
1591	for (i = 0; i < map->nr; i++) {
1592		if (map->map[i] > max)
1593			max = map->map[i];
1594	}
 
1595
1596	return max;
 
 
 
1597}
1598
1599static struct cpu_map *cpus_aggr_map;
 
 
 
 
1600
1601static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
 
1602{
1603	int cpu;
1604
1605	if (idx >= map->nr)
1606		return -1;
 
1607
1608	cpu = map->map[idx];
 
1609
1610	if (cpus_aggr_map->map[cpu] == -1)
1611		cpus_aggr_map->map[cpu] = get_id(map, idx);
 
1612
1613	return cpus_aggr_map->map[cpu];
 
 
 
1614}
1615
1616static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
 
1617{
1618	return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
1619}
1620
1621static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
 
1622{
1623	return perf_stat__get_aggr(perf_stat__get_core, map, idx);
1624}
1625
1626static int perf_stat_init_aggr_mode(void)
 
1627{
1628	int nr;
 
 
 
 
 
 
 
 
 
 
 
 
 
1629
1630	switch (stat_config.aggr_mode) {
 
 
1631	case AGGR_SOCKET:
1632		if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1633			perror("cannot build socket map");
1634			return -1;
1635		}
1636		aggr_get_id = perf_stat__get_socket_cached;
1637		break;
1638	case AGGR_CORE:
1639		if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1640			perror("cannot build core map");
1641			return -1;
1642		}
1643		aggr_get_id = perf_stat__get_core_cached;
1644		break;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1645	case AGGR_NONE:
 
1646	case AGGR_GLOBAL:
 
1647	case AGGR_THREAD:
1648	case AGGR_UNSET:
 
1649	default:
1650		break;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1651	}
1652
1653	/*
1654	 * The evsel_list->cpus is the base we operate on,
1655	 * taking the highest cpu number to be the size of
1656	 * the aggregation translate cpumap.
1657	 */
1658	nr = cpu_map__get_max(evsel_list->cpus);
1659	cpus_aggr_map = cpu_map__empty_new(nr + 1);
1660	return cpus_aggr_map ? 0 : -ENOMEM;
 
 
 
1661}
1662
1663static void perf_stat__exit_aggr_mode(void)
1664{
1665	cpu_map__put(aggr_map);
1666	cpu_map__put(cpus_aggr_map);
1667	aggr_map = NULL;
1668	cpus_aggr_map = NULL;
 
1669}
1670
1671static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
1672{
1673	int cpu;
 
 
1674
1675	if (idx > map->nr)
1676		return -1;
 
 
 
 
 
1677
1678	cpu = map->map[idx];
 
 
 
1679
1680	if (cpu >= env->nr_cpus_online)
1681		return -1;
1682
1683	return cpu;
1684}
1685
1686static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
1687{
1688	struct perf_env *env = data;
1689	int cpu = perf_env__get_cpu(env, map, idx);
1690
1691	return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
 
 
 
 
 
 
 
 
 
 
1692}
1693
1694static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
1695{
1696	struct perf_env *env = data;
1697	int core = -1, cpu = perf_env__get_cpu(env, map, idx);
1698
1699	if (cpu != -1) {
1700		int socket_id = env->cpu[cpu].socket_id;
 
 
 
 
 
 
 
 
 
 
 
1701
 
 
 
 
 
 
1702		/*
1703		 * Encode socket in upper 16 bits
1704		 * core_id is relative to socket, and
1705		 * we need a global id. So we combine
1706		 * socket + core id.
1707		 */
1708		core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
 
 
 
1709	}
1710
1711	return core;
 
 
 
 
 
 
 
 
1712}
1713
1714static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
1715				      struct cpu_map **sockp)
1716{
1717	return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
 
 
 
 
1718}
1719
1720static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
1721				    struct cpu_map **corep)
 
 
 
 
 
1722{
1723	return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1724}
1725
1726static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
 
1727{
1728	return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1729}
1730
1731static int perf_stat__get_core_file(struct cpu_map *map, int idx)
 
1732{
1733	return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1734}
1735
1736static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
 
1737{
1738	struct perf_env *env = &st->session->header.env;
 
1739
1740	switch (stat_config.aggr_mode) {
 
 
 
 
 
 
 
 
1741	case AGGR_SOCKET:
1742		if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
1743			perror("cannot build socket map");
1744			return -1;
1745		}
1746		aggr_get_id = perf_stat__get_socket_file;
1747		break;
1748	case AGGR_CORE:
1749		if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
1750			perror("cannot build core map");
1751			return -1;
1752		}
1753		aggr_get_id = perf_stat__get_core_file;
1754		break;
1755	case AGGR_NONE:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1756	case AGGR_GLOBAL:
 
 
 
1757	case AGGR_THREAD:
1758	case AGGR_UNSET:
 
1759	default:
1760		break;
1761	}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1762
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1763	return 0;
1764}
1765
1766/*
1767 * Add default attributes, if there were no attributes specified or
1768 * if -d/--detailed, -d -d or -d -d -d is used:
1769 */
1770static int add_default_attributes(void)
1771{
 
1772	struct perf_event_attr default_attrs0[] = {
1773
1774  { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK		},
1775  { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES	},
1776  { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS		},
1777  { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS		},
1778
1779  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES		},
1780};
1781	struct perf_event_attr frontend_attrs[] = {
1782  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND	},
1783};
1784	struct perf_event_attr backend_attrs[] = {
1785  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND	},
1786};
1787	struct perf_event_attr default_attrs1[] = {
1788  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS		},
1789  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS	},
1790  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES		},
1791
1792};
1793
1794/*
1795 * Detailed stats (-d), covering the L1 and last level data caches:
1796 */
1797	struct perf_event_attr detailed_attrs[] = {
1798
1799  { .type = PERF_TYPE_HW_CACHE,
1800    .config =
1801	 PERF_COUNT_HW_CACHE_L1D		<<  0  |
1802	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1803	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1804
1805  { .type = PERF_TYPE_HW_CACHE,
1806    .config =
1807	 PERF_COUNT_HW_CACHE_L1D		<<  0  |
1808	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1809	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1810
1811  { .type = PERF_TYPE_HW_CACHE,
1812    .config =
1813	 PERF_COUNT_HW_CACHE_LL			<<  0  |
1814	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1815	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1816
1817  { .type = PERF_TYPE_HW_CACHE,
1818    .config =
1819	 PERF_COUNT_HW_CACHE_LL			<<  0  |
1820	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1821	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1822};
1823
1824/*
1825 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1826 */
1827	struct perf_event_attr very_detailed_attrs[] = {
1828
1829  { .type = PERF_TYPE_HW_CACHE,
1830    .config =
1831	 PERF_COUNT_HW_CACHE_L1I		<<  0  |
1832	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1833	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1834
1835  { .type = PERF_TYPE_HW_CACHE,
1836    .config =
1837	 PERF_COUNT_HW_CACHE_L1I		<<  0  |
1838	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1839	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1840
1841  { .type = PERF_TYPE_HW_CACHE,
1842    .config =
1843	 PERF_COUNT_HW_CACHE_DTLB		<<  0  |
1844	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1845	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1846
1847  { .type = PERF_TYPE_HW_CACHE,
1848    .config =
1849	 PERF_COUNT_HW_CACHE_DTLB		<<  0  |
1850	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1851	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1852
1853  { .type = PERF_TYPE_HW_CACHE,
1854    .config =
1855	 PERF_COUNT_HW_CACHE_ITLB		<<  0  |
1856	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1857	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1858
1859  { .type = PERF_TYPE_HW_CACHE,
1860    .config =
1861	 PERF_COUNT_HW_CACHE_ITLB		<<  0  |
1862	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1863	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1864
1865};
1866
1867/*
1868 * Very, very detailed stats (-d -d -d), adding prefetch events:
1869 */
1870	struct perf_event_attr very_very_detailed_attrs[] = {
1871
1872  { .type = PERF_TYPE_HW_CACHE,
1873    .config =
1874	 PERF_COUNT_HW_CACHE_L1D		<<  0  |
1875	(PERF_COUNT_HW_CACHE_OP_PREFETCH	<<  8) |
1876	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1877
1878  { .type = PERF_TYPE_HW_CACHE,
1879    .config =
1880	 PERF_COUNT_HW_CACHE_L1D		<<  0  |
1881	(PERF_COUNT_HW_CACHE_OP_PREFETCH	<<  8) |
1882	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1883};
1884
 
 
1885	/* Set attrs if no event is selected and !null_run: */
1886	if (null_run)
1887		return 0;
1888
1889	if (transaction_run) {
1890		int err;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1891		if (pmu_have_event("cpu", "cycles-ct") &&
1892		    pmu_have_event("cpu", "el-start"))
1893			err = parse_events(evsel_list, transaction_attrs, NULL);
 
1894		else
1895			err = parse_events(evsel_list, transaction_limited_attrs, NULL);
 
 
1896		if (err) {
1897			fprintf(stderr, "Cannot set up transaction events\n");
 
 
 
 
 
 
 
 
 
 
 
 
1898			return -1;
1899		}
1900		return 0;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1901	}
1902
1903	if (!evsel_list->nr_entries) {
1904		if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
 
 
 
 
 
 
1905			return -1;
1906		if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
1907			if (perf_evlist__add_default_attrs(evsel_list,
1908						frontend_attrs) < 0)
1909				return -1;
1910		}
1911		if (pmu_have_event("cpu", "stalled-cycles-backend")) {
1912			if (perf_evlist__add_default_attrs(evsel_list,
1913						backend_attrs) < 0)
1914				return -1;
1915		}
1916		if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
 
 
 
1917			return -1;
1918	}
1919
1920	/* Detailed events get appended to the event list: */
1921
1922	if (detailed_run <  1)
1923		return 0;
1924
1925	/* Append detailed run extra attributes: */
1926	if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1927		return -1;
1928
1929	if (detailed_run < 2)
1930		return 0;
1931
1932	/* Append very detailed run extra attributes: */
1933	if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1934		return -1;
1935
1936	if (detailed_run < 3)
1937		return 0;
1938
1939	/* Append very, very detailed run extra attributes: */
1940	return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1941}
1942
1943static const char * const stat_record_usage[] = {
1944	"perf stat record [<options>]",
1945	NULL,
1946};
1947
1948static void init_features(struct perf_session *session)
1949{
1950	int feat;
1951
1952	for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
1953		perf_header__set_feat(&session->header, feat);
1954
 
1955	perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
1956	perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
1957	perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
1958	perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
1959}
1960
1961static int __cmd_record(int argc, const char **argv)
1962{
1963	struct perf_session *session;
1964	struct perf_data_file *file = &perf_stat.file;
1965
1966	argc = parse_options(argc, argv, stat_options, stat_record_usage,
1967			     PARSE_OPT_STOP_AT_NON_OPTION);
1968
1969	if (output_name)
1970		file->path = output_name;
1971
1972	if (run_count != 1 || forever) {
1973		pr_err("Cannot use -r option with perf stat record.\n");
1974		return -1;
1975	}
1976
1977	session = perf_session__new(file, false, NULL);
1978	if (session == NULL) {
1979		pr_err("Perf session creation failed.\n");
1980		return -1;
1981	}
1982
1983	init_features(session);
1984
1985	session->evlist   = evsel_list;
1986	perf_stat.session = session;
1987	perf_stat.record  = true;
1988	return argc;
1989}
1990
1991static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
1992				    union perf_event *event,
1993				    struct perf_session *session)
1994{
1995	struct stat_round_event *round = &event->stat_round;
1996	struct perf_evsel *counter;
1997	struct timespec tsh, *ts = NULL;
1998	const char **argv = session->header.env.cmdline_argv;
1999	int argc = session->header.env.nr_cmdline;
2000
2001	evlist__for_each(evsel_list, counter)
2002		perf_stat_process_counter(&stat_config, counter);
2003
2004	if (round->type == PERF_STAT_ROUND_TYPE__FINAL)
2005		update_stats(&walltime_nsecs_stats, round->time);
2006
2007	if (stat_config.interval && round->time) {
2008		tsh.tv_sec  = round->time / NSECS_PER_SEC;
2009		tsh.tv_nsec = round->time % NSECS_PER_SEC;
2010		ts = &tsh;
2011	}
2012
2013	print_counters(ts, argc, argv);
2014	return 0;
2015}
2016
2017static
2018int process_stat_config_event(struct perf_tool *tool __maybe_unused,
2019			      union perf_event *event,
2020			      struct perf_session *session __maybe_unused)
2021{
 
2022	struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2023
2024	perf_event__read_stat_config(&stat_config, &event->stat_config);
2025
2026	if (cpu_map__empty(st->cpus)) {
2027		if (st->aggr_mode != AGGR_UNSET)
2028			pr_warning("warning: processing task data, aggregation mode not set\n");
2029		return 0;
2030	}
2031
2032	if (st->aggr_mode != AGGR_UNSET)
2033		stat_config.aggr_mode = st->aggr_mode;
 
2034
2035	if (perf_stat.file.is_pipe)
2036		perf_stat_init_aggr_mode();
2037	else
2038		perf_stat_init_aggr_mode_file(st);
2039
 
 
 
 
 
 
 
 
2040	return 0;
2041}
2042
2043static int set_maps(struct perf_stat *st)
2044{
2045	if (!st->cpus || !st->threads)
2046		return 0;
2047
2048	if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2049		return -EINVAL;
2050
2051	perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
2052
2053	if (perf_evlist__alloc_stats(evsel_list, true))
2054		return -ENOMEM;
2055
2056	st->maps_allocated = true;
2057	return 0;
2058}
2059
2060static
2061int process_thread_map_event(struct perf_tool *tool __maybe_unused,
2062			     union perf_event *event,
2063			     struct perf_session *session __maybe_unused)
2064{
 
2065	struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2066
2067	if (st->threads) {
2068		pr_warning("Extra thread map event, ignoring.\n");
2069		return 0;
2070	}
2071
2072	st->threads = thread_map__new_event(&event->thread_map);
2073	if (!st->threads)
2074		return -ENOMEM;
2075
2076	return set_maps(st);
2077}
2078
2079static
2080int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
2081			  union perf_event *event,
2082			  struct perf_session *session __maybe_unused)
2083{
 
2084	struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2085	struct cpu_map *cpus;
2086
2087	if (st->cpus) {
2088		pr_warning("Extra cpu map event, ignoring.\n");
2089		return 0;
2090	}
2091
2092	cpus = cpu_map__new_data(&event->cpu_map.data);
2093	if (!cpus)
2094		return -ENOMEM;
2095
2096	st->cpus = cpus;
2097	return set_maps(st);
2098}
2099
2100static const char * const stat_report_usage[] = {
2101	"perf stat report [<options>]",
2102	NULL,
2103};
2104
2105static struct perf_stat perf_stat = {
2106	.tool = {
2107		.attr		= perf_event__process_attr,
2108		.event_update	= perf_event__process_event_update,
2109		.thread_map	= process_thread_map_event,
2110		.cpu_map	= process_cpu_map_event,
2111		.stat_config	= process_stat_config_event,
2112		.stat		= perf_event__process_stat_event,
2113		.stat_round	= process_stat_round_event,
2114	},
2115	.aggr_mode = AGGR_UNSET,
2116};
2117
2118static int __cmd_report(int argc, const char **argv)
2119{
2120	struct perf_session *session;
2121	const struct option options[] = {
2122	OPT_STRING('i', "input", &input_name, "file", "input file name"),
2123	OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2124		     "aggregate counts per processor socket", AGGR_SOCKET),
 
 
2125	OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2126		     "aggregate counts per physical processor core", AGGR_CORE),
 
 
2127	OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2128		     "disable CPU count aggregation", AGGR_NONE),
2129	OPT_END()
2130	};
2131	struct stat st;
2132	int ret;
2133
2134	argc = parse_options(argc, argv, options, stat_report_usage, 0);
2135
2136	if (!input_name || !strlen(input_name)) {
2137		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2138			input_name = "-";
2139		else
2140			input_name = "perf.data";
2141	}
2142
2143	perf_stat.file.path = input_name;
2144	perf_stat.file.mode = PERF_DATA_MODE_READ;
 
 
2145
2146	session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);
2147	if (session == NULL)
2148		return -1;
2149
2150	perf_stat.session  = session;
2151	stat_config.output = stderr;
2152	evsel_list         = session->evlist;
2153
2154	ret = perf_session__process_events(session);
2155	if (ret)
2156		return ret;
2157
2158	perf_session__delete(session);
2159	return 0;
2160}
2161
2162int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2163{
2164	const char * const stat_usage[] = {
2165		"perf stat [<options>] [<command>]",
2166		NULL
2167	};
2168	int status = -EINVAL, run_idx;
2169	const char *mode;
2170	FILE *output = stderr;
2171	unsigned int interval;
2172	const char * const stat_subcommands[] = { "record", "report" };
 
2173
2174	setlocale(LC_ALL, "");
2175
2176	evsel_list = perf_evlist__new();
2177	if (evsel_list == NULL)
2178		return -ENOMEM;
2179
2180	parse_events__shrink_config_terms();
 
 
 
 
 
 
2181	argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2182					(const char **) stat_usage,
2183					PARSE_OPT_STOP_AT_NON_OPTION);
2184	perf_stat__init_shadow_stats();
2185
2186	if (csv_sep) {
2187		csv_output = true;
2188		if (!strcmp(csv_sep, "\\t"))
2189			csv_sep = "\t";
2190	} else
2191		csv_sep = DEFAULT_SEPARATOR;
2192
2193	if (argc && !strncmp(argv[0], "rec", 3)) {
2194		argc = __cmd_record(argc, argv);
2195		if (argc < 0)
2196			return -1;
2197	} else if (argc && !strncmp(argv[0], "rep", 3))
2198		return __cmd_report(argc, argv);
2199
2200	interval = stat_config.interval;
 
2201
2202	/*
2203	 * For record command the -o is already taken care of.
2204	 */
2205	if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2206		output = NULL;
2207
2208	if (output_name && output_fd) {
2209		fprintf(stderr, "cannot use both --output and --log-fd\n");
2210		parse_options_usage(stat_usage, stat_options, "o", 1);
2211		parse_options_usage(NULL, stat_options, "log-fd", 0);
2212		goto out;
2213	}
2214
2215	if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2216		fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2217		goto out;
2218	}
2219
2220	if (metric_only && run_count > 1) {
2221		fprintf(stderr, "--metric-only is not supported with -r\n");
2222		goto out;
2223	}
2224
 
 
 
 
 
 
 
2225	if (output_fd < 0) {
2226		fprintf(stderr, "argument to --log-fd must be a > 0\n");
2227		parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2228		goto out;
2229	}
2230
2231	if (!output) {
2232		struct timespec tm;
2233		mode = append_file ? "a" : "w";
2234
2235		output = fopen(output_name, mode);
2236		if (!output) {
2237			perror("failed to create output file");
2238			return -1;
2239		}
2240		clock_gettime(CLOCK_REALTIME, &tm);
2241		fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2242	} else if (output_fd > 0) {
2243		mode = append_file ? "a" : "w";
2244		output = fdopen(output_fd, mode);
2245		if (!output) {
2246			perror("Failed opening logfd");
2247			return -errno;
2248		}
2249	}
2250
 
 
 
 
 
 
 
 
2251	stat_config.output = output;
2252
2253	/*
2254	 * let the spreadsheet do the pretty-printing
2255	 */
2256	if (csv_output) {
2257		/* User explicitly passed -B? */
2258		if (big_num_opt == 1) {
2259			fprintf(stderr, "-B option not supported with -x\n");
2260			parse_options_usage(stat_usage, stat_options, "B", 1);
2261			parse_options_usage(NULL, stat_options, "x", 1);
2262			goto out;
2263		} else /* Nope, so disable big number formatting */
2264			big_num = false;
2265	} else if (big_num_opt == 0) /* User passed --no-big-num */
2266		big_num = false;
2267
2268	if (!argc && target__none(&target))
2269		usage_with_options(stat_usage, stat_options);
 
 
 
 
 
2270
2271	if (run_count < 0) {
 
 
 
 
 
 
 
2272		pr_err("Run count must be a positive number\n");
2273		parse_options_usage(stat_usage, stat_options, "r", 1);
2274		goto out;
2275	} else if (run_count == 0) {
2276		forever = true;
2277		run_count = 1;
2278	}
2279
2280	if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
2281		fprintf(stderr, "The --per-thread option is only available "
2282			"when monitoring via -p -t options.\n");
2283		parse_options_usage(NULL, stat_options, "p", 1);
2284		parse_options_usage(NULL, stat_options, "t", 1);
2285		goto out;
 
 
 
 
 
 
 
 
 
 
 
 
2286	}
2287
2288	/*
2289	 * no_aggr, cgroup are for system-wide only
2290	 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2291	 */
2292	if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2293	      stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
 
2294	    !target__has_cpu(&target)) {
2295		fprintf(stderr, "both cgroup and no-aggregation "
2296			"modes only available in system-wide mode\n");
2297
2298		parse_options_usage(stat_usage, stat_options, "G", 1);
2299		parse_options_usage(NULL, stat_options, "A", 1);
2300		parse_options_usage(NULL, stat_options, "a", 1);
 
2301		goto out;
2302	}
2303
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2304	if (add_default_attributes())
2305		goto out;
2306
2307	target__validate(&target);
 
 
 
 
 
 
2308
2309	if (perf_evlist__create_maps(evsel_list, &target) < 0) {
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2310		if (target__has_task(&target)) {
2311			pr_err("Problems finding threads of monitor\n");
2312			parse_options_usage(stat_usage, stat_options, "p", 1);
2313			parse_options_usage(NULL, stat_options, "t", 1);
2314		} else if (target__has_cpu(&target)) {
2315			perror("failed to parse CPUs map");
2316			parse_options_usage(stat_usage, stat_options, "C", 1);
2317			parse_options_usage(NULL, stat_options, "a", 1);
2318		}
2319		goto out;
2320	}
2321
 
 
2322	/*
2323	 * Initialize thread_map with comm names,
2324	 * so we could print it out on output.
2325	 */
2326	if (stat_config.aggr_mode == AGGR_THREAD)
2327		thread_map__read_comms(evsel_list->threads);
 
 
 
 
2328
2329	if (interval && interval < 100) {
2330		if (interval < 10) {
2331			pr_err("print interval must be >= 10ms\n");
2332			parse_options_usage(stat_usage, stat_options, "I", 1);
 
 
 
 
 
 
 
 
 
 
2333			goto out;
2334		} else
2335			pr_warning("print interval < 100ms. "
2336				   "The overhead percentage could be high in some cases. "
2337				   "Please proceed with caution.\n");
2338	}
2339
2340	if (perf_evlist__alloc_stats(evsel_list, interval))
 
 
2341		goto out;
 
2342
2343	if (perf_stat_init_aggr_mode())
2344		goto out;
2345
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2346	/*
2347	 * We dont want to block the signals - that would cause
2348	 * child tasks to inherit that and Ctrl-C would not work.
2349	 * What we want is for Ctrl-C to work in the exec()-ed
2350	 * task, but being ignored by perf stat itself:
2351	 */
2352	atexit(sig_atexit);
2353	if (!forever)
2354		signal(SIGINT,  skip_signal);
2355	signal(SIGCHLD, skip_signal);
2356	signal(SIGALRM, skip_signal);
2357	signal(SIGABRT, skip_signal);
2358
 
 
 
 
 
2359	status = 0;
2360	for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
2361		if (run_count != 1 && verbose)
2362			fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2363				run_idx + 1);
2364
2365		status = run_perf_stat(argc, argv);
2366		if (forever && status != -1) {
 
 
 
2367			print_counters(NULL, argc, argv);
2368			perf_stat__reset_stats();
2369		}
2370	}
2371
2372	if (!forever && status != -1 && !interval)
2373		print_counters(NULL, argc, argv);
2374
 
 
2375	if (STAT_RECORD) {
2376		/*
2377		 * We synthesize the kernel mmap record just so that older tools
2378		 * don't emit warnings about not being able to resolve symbols
2379		 * due to /proc/sys/kernel/kptr_restrict settings and instear provide
2380		 * a saner message about no samples being in the perf.data file.
2381		 *
2382		 * This also serves to suppress a warning about f_header.data.size == 0
2383		 * in header.c at the moment 'perf stat record' gets introduced, which
2384		 * is not really needed once we start adding the stat specific PERF_RECORD_
2385		 * records, but the need to suppress the kptr_restrict messages in older
2386		 * tools remain  -acme
2387		 */
2388		int fd = perf_data_file__fd(&perf_stat.file);
2389		int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2390							     process_synthesized_event,
2391							     &perf_stat.session->machines.host);
 
2392		if (err) {
2393			pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2394				   "older tools may produce warnings about this file\n.");
2395		}
2396
2397		if (!interval) {
2398			if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2399				pr_err("failed to write stat round event\n");
2400		}
2401
2402		if (!perf_stat.file.is_pipe) {
2403			perf_stat.session->header.data_size += perf_stat.bytes_written;
2404			perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2405		}
2406
 
2407		perf_session__delete(perf_stat.session);
2408	}
2409
2410	perf_stat__exit_aggr_mode();
2411	perf_evlist__free_stats(evsel_list);
2412out:
2413	perf_evlist__delete(evsel_list);
 
 
 
 
 
 
 
 
 
 
 
 
 
2414	return status;
2415}
v6.2
   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * builtin-stat.c
   4 *
   5 * Builtin stat command: Give a precise performance counters summary
   6 * overview about any workload, CPU or specific PID.
   7 *
   8 * Sample output:
   9
  10   $ perf stat ./hackbench 10
  11
  12  Time: 0.118
  13
  14  Performance counter stats for './hackbench 10':
  15
  16       1708.761321 task-clock                #   11.037 CPUs utilized
  17            41,190 context-switches          #    0.024 M/sec
  18             6,735 CPU-migrations            #    0.004 M/sec
  19            17,318 page-faults               #    0.010 M/sec
  20     5,205,202,243 cycles                    #    3.046 GHz
  21     3,856,436,920 stalled-cycles-frontend   #   74.09% frontend cycles idle
  22     1,600,790,871 stalled-cycles-backend    #   30.75% backend  cycles idle
  23     2,603,501,247 instructions              #    0.50  insns per cycle
  24                                             #    1.48  stalled cycles per insn
  25       484,357,498 branches                  #  283.455 M/sec
  26         6,388,934 branch-misses             #    1.32% of all branches
  27
  28        0.154822978  seconds time elapsed
  29
  30 *
  31 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
  32 *
  33 * Improvements and fixes by:
  34 *
  35 *   Arjan van de Ven <arjan@linux.intel.com>
  36 *   Yanmin Zhang <yanmin.zhang@intel.com>
  37 *   Wu Fengguang <fengguang.wu@intel.com>
  38 *   Mike Galbraith <efault@gmx.de>
  39 *   Paul Mackerras <paulus@samba.org>
  40 *   Jaswinder Singh Rajput <jaswinder@kernel.org>
 
 
  41 */
  42
 
  43#include "builtin.h"
  44#include "perf.h"
  45#include "util/cgroup.h"
 
  46#include <subcmd/parse-options.h>
  47#include "util/parse-events.h"
  48#include "util/pmu.h"
  49#include "util/event.h"
  50#include "util/evlist.h"
  51#include "util/evlist-hybrid.h"
  52#include "util/evsel.h"
  53#include "util/debug.h"
  54#include "util/color.h"
  55#include "util/stat.h"
  56#include "util/header.h"
  57#include "util/cpumap.h"
 
  58#include "util/thread_map.h"
  59#include "util/counts.h"
  60#include "util/topdown.h"
  61#include "util/session.h"
  62#include "util/tool.h"
  63#include "util/string2.h"
  64#include "util/metricgroup.h"
  65#include "util/synthetic-events.h"
  66#include "util/target.h"
  67#include "util/time-utils.h"
  68#include "util/top.h"
  69#include "util/affinity.h"
  70#include "util/pfm.h"
  71#include "util/bpf_counter.h"
  72#include "util/iostat.h"
  73#include "util/pmu-hybrid.h"
  74#include "asm/bug.h"
  75
  76#include <linux/time64.h>
  77#include <linux/zalloc.h>
  78#include <api/fs/fs.h>
  79#include <errno.h>
  80#include <signal.h>
  81#include <stdlib.h>
  82#include <sys/prctl.h>
  83#include <inttypes.h>
  84#include <locale.h>
  85#include <math.h>
  86#include <sys/types.h>
  87#include <sys/stat.h>
  88#include <sys/wait.h>
  89#include <unistd.h>
  90#include <sys/time.h>
  91#include <sys/resource.h>
  92#include <linux/err.h>
  93
  94#include <linux/ctype.h>
  95#include <perf/evlist.h>
  96#include <internal/threadmap.h>
  97
  98#define DEFAULT_SEPARATOR	" "
  99#define FREEZE_ON_SMI_PATH	"devices/cpu/freeze_on_smi"
 
 100
 101static void print_counters(struct timespec *ts, int argc, const char **argv);
 102
 103/* Default events used for perf stat -T */
 104static const char *transaction_attrs = {
 105	"task-clock,"
 106	"{"
 107	"instructions,"
 108	"cycles,"
 109	"cpu/cycles-t/,"
 110	"cpu/tx-start/,"
 111	"cpu/el-start/,"
 112	"cpu/cycles-ct/"
 113	"}"
 114};
 115
 116/* More limited version when the CPU does not have all events. */
 117static const char * transaction_limited_attrs = {
 118	"task-clock,"
 119	"{"
 120	"instructions,"
 121	"cycles,"
 122	"cpu/cycles-t/,"
 123	"cpu/tx-start/"
 124	"}"
 125};
 126
 127static const char * topdown_attrs[] = {
 128	"topdown-total-slots",
 129	"topdown-slots-retired",
 130	"topdown-recovery-bubbles",
 131	"topdown-fetch-bubbles",
 132	"topdown-slots-issued",
 133	NULL,
 134};
 135
 136static const char *topdown_metric_attrs[] = {
 137	"slots",
 138	"topdown-retiring",
 139	"topdown-bad-spec",
 140	"topdown-fe-bound",
 141	"topdown-be-bound",
 142	NULL,
 143};
 144
 145static const char *topdown_metric_L2_attrs[] = {
 146	"slots",
 147	"topdown-retiring",
 148	"topdown-bad-spec",
 149	"topdown-fe-bound",
 150	"topdown-be-bound",
 151	"topdown-heavy-ops",
 152	"topdown-br-mispredict",
 153	"topdown-fetch-lat",
 154	"topdown-mem-bound",
 155	NULL,
 156};
 157
 158#define TOPDOWN_MAX_LEVEL			2
 159
 160static const char *smi_cost_attrs = {
 161	"{"
 162	"msr/aperf/,"
 163	"msr/smi/,"
 164	"cycles"
 165	"}"
 166};
 167
 168static struct evlist	*evsel_list;
 169static bool all_counters_use_bpf = true;
 170
 171static struct target target = {
 172	.uid	= UINT_MAX,
 173};
 174
 175#define METRIC_ONLY_LEN 20
 176
 177static volatile sig_atomic_t	child_pid			= -1;
 
 
 
 178static int			detailed_run			=  0;
 179static bool			transaction_run;
 180static bool			topdown_run			= false;
 181static bool			smi_cost			= false;
 182static bool			smi_reset			= false;
 183static int			big_num_opt			=  -1;
 
 
 
 184static const char		*pre_cmd			= NULL;
 185static const char		*post_cmd			= NULL;
 186static bool			sync_run			= false;
 
 
 187static bool			forever				= false;
 188static bool			force_metric_only		= false;
 189static struct timespec		ref_time;
 
 
 190static bool			append_file;
 191static bool			interval_count;
 192static const char		*output_name;
 193static int			output_fd;
 194static char			*metrics;
 195
 196struct perf_stat {
 197	bool			 record;
 198	struct perf_data	 data;
 199	struct perf_session	*session;
 200	u64			 bytes_written;
 201	struct perf_tool	 tool;
 202	bool			 maps_allocated;
 203	struct perf_cpu_map	*cpus;
 204	struct perf_thread_map *threads;
 205	enum aggr_mode		 aggr_mode;
 206};
 207
 208static struct perf_stat		perf_stat;
 209#define STAT_RECORD		perf_stat.record
 210
 211static volatile sig_atomic_t done = 0;
 212
 213static struct perf_stat_config stat_config = {
 214	.aggr_mode		= AGGR_GLOBAL,
 215	.scale			= true,
 216	.unit_width		= 4, /* strlen("unit") */
 217	.run_count		= 1,
 218	.metric_only_len	= METRIC_ONLY_LEN,
 219	.walltime_nsecs_stats	= &walltime_nsecs_stats,
 220	.ru_stats		= &ru_stats,
 221	.big_num		= true,
 222	.ctl_fd			= -1,
 223	.ctl_fd_ack		= -1,
 224	.iostat_run		= false,
 225};
 226
 227static bool cpus_map_matched(struct evsel *a, struct evsel *b)
 
 228{
 229	if (!a->core.cpus && !b->core.cpus)
 230		return true;
 231
 232	if (!a->core.cpus || !b->core.cpus)
 233		return false;
 234
 235	if (perf_cpu_map__nr(a->core.cpus) != perf_cpu_map__nr(b->core.cpus))
 236		return false;
 237
 238	for (int i = 0; i < perf_cpu_map__nr(a->core.cpus); i++) {
 239		if (perf_cpu_map__cpu(a->core.cpus, i).cpu !=
 240		    perf_cpu_map__cpu(b->core.cpus, i).cpu)
 241			return false;
 242	}
 
 243
 244	return true;
 
 
 
 245}
 246
 247static void evlist__check_cpu_maps(struct evlist *evlist)
 248{
 249	struct evsel *evsel, *pos, *leader;
 250	char buf[1024];
 
 
 
 251
 252	if (evlist__has_hybrid(evlist))
 253		evlist__warn_hybrid_group(evlist);
 254
 255	evlist__for_each_entry(evlist, evsel) {
 256		leader = evsel__leader(evsel);
 
 
 
 257
 258		/* Check that leader matches cpus with each member. */
 259		if (leader == evsel)
 260			continue;
 261		if (cpus_map_matched(leader, evsel))
 262			continue;
 
 
 
 
 
 
 263
 264		/* If there's mismatch disable the group and warn user. */
 265		WARN_ONCE(1, "WARNING: grouped events cpus do not match, disabling group:\n");
 266		evsel__group_desc(leader, buf, sizeof(buf));
 267		pr_warning("  %s\n", buf);
 268
 269		if (verbose > 0) {
 270			cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));
 271			pr_warning("     %s: %s\n", leader->name, buf);
 272			cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));
 273			pr_warning("     %s: %s\n", evsel->name, buf);
 274		}
 275
 276		for_each_group_evsel(pos, leader)
 277			evsel__remove_from_group(pos, leader);
 
 
 
 
 278	}
 
 
 
 
 
 279}
 280
 281static inline void diff_timespec(struct timespec *r, struct timespec *a,
 282				 struct timespec *b)
 
 
 283{
 284	r->tv_sec = a->tv_sec - b->tv_sec;
 285	if (a->tv_nsec < b->tv_nsec) {
 286		r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
 287		r->tv_sec--;
 288	} else {
 289		r->tv_nsec = a->tv_nsec - b->tv_nsec ;
 290	}
 291}
 292
 293static void perf_stat__reset_stats(void)
 294{
 295	evlist__reset_stats(evsel_list);
 296	perf_stat__reset_shadow_stats();
 297}
 298
 299static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
 300				     union perf_event *event,
 301				     struct perf_sample *sample __maybe_unused,
 302				     struct machine *machine __maybe_unused)
 303{
 304	if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {
 305		pr_err("failed to write perf data, error: %m\n");
 306		return -1;
 307	}
 308
 309	perf_stat.bytes_written += event->header.size;
 310	return 0;
 311}
 312
 313static int write_stat_round_event(u64 tm, u64 type)
 314{
 315	return perf_event__synthesize_stat_round(NULL, tm, type,
 316						 process_synthesized_event,
 317						 NULL);
 318}
 319
 320#define WRITE_STAT_ROUND_EVENT(time, interval) \
 321	write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
 322
 323#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)
 324
 325static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread,
 326				   struct perf_counts_values *count)
 
 327{
 328	struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread);
 329	struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx);
 330
 331	return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
 332					   process_synthesized_event, NULL);
 333}
 334
 335static int read_single_counter(struct evsel *counter, int cpu_map_idx,
 336			       int thread, struct timespec *rs)
 337{
 338	switch(counter->tool_event) {
 339		case PERF_TOOL_DURATION_TIME: {
 340			u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL;
 341			struct perf_counts_values *count =
 342				perf_counts(counter->counts, cpu_map_idx, thread);
 343			count->ena = count->run = val;
 344			count->val = val;
 345			return 0;
 346		}
 347		case PERF_TOOL_USER_TIME:
 348		case PERF_TOOL_SYSTEM_TIME: {
 349			u64 val;
 350			struct perf_counts_values *count =
 351				perf_counts(counter->counts, cpu_map_idx, thread);
 352			if (counter->tool_event == PERF_TOOL_USER_TIME)
 353				val = ru_stats.ru_utime_usec_stat.mean;
 354			else
 355				val = ru_stats.ru_stime_usec_stat.mean;
 356			count->ena = count->run = val;
 357			count->val = val;
 358			return 0;
 359		}
 360		default:
 361		case PERF_TOOL_NONE:
 362			return evsel__read_counter(counter, cpu_map_idx, thread);
 363		case PERF_TOOL_MAX:
 364			/* This should never be reached */
 365			return 0;
 366	}
 367}
 368
 369/*
 370 * Read out the results of a single counter:
 371 * do not aggregate counts across CPUs in system-wide mode
 372 */
 373static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu_map_idx)
 374{
 375	int nthreads = perf_thread_map__nr(evsel_list->core.threads);
 376	int thread;
 
 377
 378	if (!counter->supported)
 379		return -ENOENT;
 380
 
 
 
 381	for (thread = 0; thread < nthreads; thread++) {
 382		struct perf_counts_values *count;
 
 383
 384		count = perf_counts(counter->counts, cpu_map_idx, thread);
 
 
 385
 386		/*
 387		 * The leader's group read loads data into its group members
 388		 * (via evsel__read_counter()) and sets their count->loaded.
 389		 */
 390		if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) &&
 391		    read_single_counter(counter, cpu_map_idx, thread, rs)) {
 392			counter->counts->scaled = -1;
 393			perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0;
 394			perf_counts(counter->counts, cpu_map_idx, thread)->run = 0;
 395			return -1;
 396		}
 397
 398		perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false);
 399
 400		if (STAT_RECORD) {
 401			if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) {
 402				pr_err("failed to write stat event\n");
 403				return -1;
 404			}
 405		}
 406
 407		if (verbose > 1) {
 408			fprintf(stat_config.output,
 409				"%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
 410					evsel__name(counter),
 411					perf_cpu_map__cpu(evsel__cpus(counter),
 412							  cpu_map_idx).cpu,
 413					count->val, count->ena, count->run);
 414		}
 415	}
 416
 417	return 0;
 418}
 419
 420static int read_affinity_counters(struct timespec *rs)
 421{
 422	struct evlist_cpu_iterator evlist_cpu_itr;
 423	struct affinity saved_affinity, *affinity;
 424
 425	if (all_counters_use_bpf)
 426		return 0;
 
 427
 428	if (!target__has_cpu(&target) || target__has_per_thread(&target))
 429		affinity = NULL;
 430	else if (affinity__setup(&saved_affinity) < 0)
 431		return -1;
 432	else
 433		affinity = &saved_affinity;
 434
 435	evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
 436		struct evsel *counter = evlist_cpu_itr.evsel;
 437
 438		if (evsel__is_bpf(counter))
 439			continue;
 440
 441		if (!counter->err) {
 442			counter->err = read_counter_cpu(counter, rs,
 443							evlist_cpu_itr.cpu_map_idx);
 444		}
 445	}
 446	if (affinity)
 447		affinity__cleanup(&saved_affinity);
 448
 449	return 0;
 450}
 451
 452static int read_bpf_map_counters(void)
 453{
 454	struct evsel *counter;
 455	int err;
 456
 457	evlist__for_each_entry(evsel_list, counter) {
 458		if (!evsel__is_bpf(counter))
 459			continue;
 460
 461		err = bpf_counter__read(counter);
 462		if (err)
 463			return err;
 464	}
 465	return 0;
 466}
 467
 468static int read_counters(struct timespec *rs)
 469{
 470	if (!stat_config.stop_read_counter) {
 471		if (read_bpf_map_counters() ||
 472		    read_affinity_counters(rs))
 473			return -1;
 474	}
 475	return 0;
 476}
 477
 478static void process_counters(void)
 479{
 480	struct evsel *counter;
 481
 482	evlist__for_each_entry(evsel_list, counter) {
 483		if (counter->err)
 484			pr_debug("failed to read counter %s\n", counter->name);
 485		if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))
 486			pr_warning("failed to process counter %s\n", counter->name);
 487		counter->err = 0;
 488	}
 489
 490	perf_stat_merge_counters(&stat_config, evsel_list);
 491	perf_stat_process_percore(&stat_config, evsel_list);
 492	perf_stat_process_shadow_stats(&stat_config, evsel_list);
 493}
 494
 495static void process_interval(void)
 496{
 497	struct timespec ts, rs;
 498
 
 
 499	clock_gettime(CLOCK_MONOTONIC, &ts);
 500	diff_timespec(&rs, &ts, &ref_time);
 501
 502	perf_stat__reset_shadow_per_stat(&rt_stat);
 503	evlist__reset_aggr_stats(evsel_list);
 504
 505	if (read_counters(&rs) == 0)
 506		process_counters();
 507
 508	if (STAT_RECORD) {
 509		if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
 510			pr_err("failed to write stat round event\n");
 511	}
 512
 513	init_stats(&walltime_nsecs_stats);
 514	update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL);
 515	print_counters(&rs, 0, NULL);
 516}
 517
 518static bool handle_interval(unsigned int interval, int *times)
 519{
 520	if (interval) {
 521		process_interval();
 522		if (interval_count && !(--(*times)))
 523			return true;
 524	}
 525	return false;
 526}
 527
 528static int enable_counters(void)
 529{
 530	struct evsel *evsel;
 531	int err;
 532
 533	evlist__for_each_entry(evsel_list, evsel) {
 534		if (!evsel__is_bpf(evsel))
 535			continue;
 536
 537		err = bpf_counter__enable(evsel);
 538		if (err)
 539			return err;
 540	}
 541
 542	/*
 543	 * We need to enable counters only if:
 544	 * - we don't have tracee (attaching to task or cpu)
 545	 * - we have initial delay configured
 546	 */
 547	if (!target__none(&target)) {
 548		if (!all_counters_use_bpf)
 549			evlist__enable(evsel_list);
 550	}
 551	return 0;
 552}
 553
 554static void disable_counters(void)
 555{
 556	struct evsel *counter;
 557
 558	/*
 559	 * If we don't have tracee (attaching to task or cpu), counters may
 560	 * still be running. To get accurate group ratios, we must stop groups
 561	 * from counting before reading their constituent counters.
 562	 */
 563	if (!target__none(&target)) {
 564		evlist__for_each_entry(evsel_list, counter)
 565			bpf_counter__disable(counter);
 566		if (!all_counters_use_bpf)
 567			evlist__disable(evsel_list);
 568	}
 569}
 570
 571static volatile sig_atomic_t workload_exec_errno;
 572
 573/*
 574 * evlist__prepare_workload will send a SIGUSR1
 575 * if the fork fails, since we asked by setting its
 576 * want_signal to true.
 577 */
 578static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
 579					void *ucontext __maybe_unused)
 580{
 581	workload_exec_errno = info->si_value.sival_int;
 582}
 583
 584static bool evsel__should_store_id(struct evsel *counter)
 585{
 586	return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;
 587}
 588
 589static bool is_target_alive(struct target *_target,
 590			    struct perf_thread_map *threads)
 591{
 592	struct stat st;
 593	int i;
 594
 595	if (!target__has_task(_target))
 596		return true;
 597
 598	for (i = 0; i < threads->nr; i++) {
 599		char path[PATH_MAX];
 600
 601		scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),
 602			  threads->map[i].pid);
 603
 604		if (!stat(path, &st))
 605			return true;
 606	}
 607
 608	return false;
 609}
 610
 611static void process_evlist(struct evlist *evlist, unsigned int interval)
 612{
 613	enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
 
 614
 615	if (evlist__ctlfd_process(evlist, &cmd) > 0) {
 616		switch (cmd) {
 617		case EVLIST_CTL_CMD_ENABLE:
 618			__fallthrough;
 619		case EVLIST_CTL_CMD_DISABLE:
 620			if (interval)
 621				process_interval();
 622			break;
 623		case EVLIST_CTL_CMD_SNAPSHOT:
 624		case EVLIST_CTL_CMD_ACK:
 625		case EVLIST_CTL_CMD_UNSUPPORTED:
 626		case EVLIST_CTL_CMD_EVLIST:
 627		case EVLIST_CTL_CMD_STOP:
 628		case EVLIST_CTL_CMD_PING:
 629		default:
 630			break;
 631		}
 632	}
 633}
 634
 635static void compute_tts(struct timespec *time_start, struct timespec *time_stop,
 636			int *time_to_sleep)
 637{
 638	int tts = *time_to_sleep;
 639	struct timespec time_diff;
 
 
 640
 641	diff_timespec(&time_diff, time_stop, time_start);
 
 
 
 
 
 
 
 
 
 642
 643	tts -= time_diff.tv_sec * MSEC_PER_SEC +
 644	       time_diff.tv_nsec / NSEC_PER_MSEC;
 
 
 
 
 
 645
 646	if (tts < 0)
 647		tts = 0;
 
 
 
 
 
 648
 649	*time_to_sleep = tts;
 650}
 
 
 
 
 
 
 
 
 
 
 651
 652static int dispatch_events(bool forks, int timeout, int interval, int *times)
 653{
 654	int child_exited = 0, status = 0;
 655	int time_to_sleep, sleep_time;
 656	struct timespec time_start, time_stop;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 657
 658	if (interval)
 659		sleep_time = interval;
 660	else if (timeout)
 661		sleep_time = timeout;
 662	else
 663		sleep_time = 1000;
 664
 665	time_to_sleep = sleep_time;
 666
 667	while (!done) {
 668		if (forks)
 669			child_exited = waitpid(child_pid, &status, WNOHANG);
 670		else
 671			child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;
 672
 673		if (child_exited)
 674			break;
 
 675
 676		clock_gettime(CLOCK_MONOTONIC, &time_start);
 677		if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */
 678			if (timeout || handle_interval(interval, times))
 679				break;
 680			time_to_sleep = sleep_time;
 681		} else { /* fd revent */
 682			process_evlist(evsel_list, interval);
 683			clock_gettime(CLOCK_MONOTONIC, &time_stop);
 684			compute_tts(&time_start, &time_stop, &time_to_sleep);
 685		}
 686	}
 687
 688	return status;
 689}
 690
 691enum counter_recovery {
 692	COUNTER_SKIP,
 693	COUNTER_RETRY,
 694	COUNTER_FATAL,
 695};
 696
 697static enum counter_recovery stat_handle_error(struct evsel *counter)
 698{
 699	char msg[BUFSIZ];
 700	/*
 701	 * PPC returns ENXIO for HW counters until 2.6.37
 702	 * (behavior changed with commit b0a873e).
 703	 */
 704	if (errno == EINVAL || errno == ENOSYS ||
 705	    errno == ENOENT || errno == EOPNOTSUPP ||
 706	    errno == ENXIO) {
 707		if (verbose > 0)
 708			ui__warning("%s event is not supported by the kernel.\n",
 709				    evsel__name(counter));
 710		counter->supported = false;
 711		/*
 712		 * errored is a sticky flag that means one of the counter's
 713		 * cpu event had a problem and needs to be reexamined.
 714		 */
 715		counter->errored = true;
 716
 717		if ((evsel__leader(counter) != counter) ||
 718		    !(counter->core.leader->nr_members > 1))
 719			return COUNTER_SKIP;
 720	} else if (evsel__fallback(counter, errno, msg, sizeof(msg))) {
 721		if (verbose > 0)
 722			ui__warning("%s\n", msg);
 723		return COUNTER_RETRY;
 724	} else if (target__has_per_thread(&target) &&
 725		   evsel_list->core.threads &&
 726		   evsel_list->core.threads->err_thread != -1) {
 727		/*
 728		 * For global --per-thread case, skip current
 729		 * error thread.
 730		 */
 731		if (!thread_map__remove(evsel_list->core.threads,
 732					evsel_list->core.threads->err_thread)) {
 733			evsel_list->core.threads->err_thread = -1;
 734			return COUNTER_RETRY;
 735		}
 736	}
 737
 738	evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
 739	ui__error("%s\n", msg);
 740
 741	if (child_pid != -1)
 742		kill(child_pid, SIGTERM);
 743	return COUNTER_FATAL;
 744}
 745
 746static int __run_perf_stat(int argc, const char **argv, int run_idx)
 747{
 748	int interval = stat_config.interval;
 749	int times = stat_config.times;
 750	int timeout = stat_config.timeout;
 751	char msg[BUFSIZ];
 752	unsigned long long t0, t1;
 753	struct evsel *counter;
 
 754	size_t l;
 755	int status = 0;
 756	const bool forks = (argc > 0);
 757	bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
 758	struct evlist_cpu_iterator evlist_cpu_itr;
 759	struct affinity saved_affinity, *affinity = NULL;
 760	int err;
 761	bool second_pass = false;
 
 
 
 
 762
 763	if (forks) {
 764		if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {
 
 765			perror("failed to prepare workload");
 766			return -1;
 767		}
 768		child_pid = evsel_list->workload.pid;
 769	}
 770
 771	if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) {
 772		if (affinity__setup(&saved_affinity) < 0)
 773			return -1;
 774		affinity = &saved_affinity;
 775	}
 776
 777	evlist__for_each_entry(evsel_list, counter) {
 778		counter->reset_group = false;
 779		if (bpf_counter__load(counter, &target))
 780			return -1;
 781		if (!evsel__is_bpf(counter))
 782			all_counters_use_bpf = false;
 783	}
 784
 785	evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
 786		counter = evlist_cpu_itr.evsel;
 787
 788		/*
 789		 * bperf calls evsel__open_per_cpu() in bperf__load(), so
 790		 * no need to call it again here.
 791		 */
 792		if (target.use_bpf)
 793			break;
 794
 795		if (counter->reset_group || counter->errored)
 796			continue;
 797		if (evsel__is_bpf(counter))
 798			continue;
 799try_again:
 800		if (create_perf_stat_counter(counter, &stat_config, &target,
 801					     evlist_cpu_itr.cpu_map_idx) < 0) {
 802
 803			/*
 804			 * Weak group failed. We cannot just undo this here
 805			 * because earlier CPUs might be in group mode, and the kernel
 806			 * doesn't support mixing group and non group reads. Defer
 807			 * it to later.
 808			 * Don't close here because we're in the wrong affinity.
 809			 */
 810			if ((errno == EINVAL || errno == EBADF) &&
 811				evsel__leader(counter) != counter &&
 812				counter->weak_group) {
 813				evlist__reset_weak_group(evsel_list, counter, false);
 814				assert(counter->reset_group);
 815				second_pass = true;
 816				continue;
 817			}
 
 
 
 
 
 
 
 
 
 
 
 
 818
 819			switch (stat_handle_error(counter)) {
 820			case COUNTER_FATAL:
 821				return -1;
 822			case COUNTER_RETRY:
 823				goto try_again;
 824			case COUNTER_SKIP:
 825				continue;
 826			default:
 827				break;
 828			}
 829
 
 830		}
 831		counter->supported = true;
 832	}
 833
 834	if (second_pass) {
 835		/*
 836		 * Now redo all the weak group after closing them,
 837		 * and also close errored counters.
 838		 */
 839
 840		/* First close errored or weak retry */
 841		evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
 842			counter = evlist_cpu_itr.evsel;
 843
 844			if (!counter->reset_group && !counter->errored)
 845				continue;
 846
 847			perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx);
 848		}
 849		/* Now reopen weak */
 850		evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
 851			counter = evlist_cpu_itr.evsel;
 852
 853			if (!counter->reset_group)
 854				continue;
 855try_again_reset:
 856			pr_debug2("reopening weak %s\n", evsel__name(counter));
 857			if (create_perf_stat_counter(counter, &stat_config, &target,
 858						     evlist_cpu_itr.cpu_map_idx) < 0) {
 859
 860				switch (stat_handle_error(counter)) {
 861				case COUNTER_FATAL:
 862					return -1;
 863				case COUNTER_RETRY:
 864					goto try_again_reset;
 865				case COUNTER_SKIP:
 866					continue;
 867				default:
 868					break;
 869				}
 870			}
 871			counter->supported = true;
 872		}
 873	}
 874	affinity__cleanup(affinity);
 875
 876	evlist__for_each_entry(evsel_list, counter) {
 877		if (!counter->supported) {
 878			perf_evsel__free_fd(&counter->core);
 879			continue;
 880		}
 881
 882		l = strlen(counter->unit);
 883		if (l > stat_config.unit_width)
 884			stat_config.unit_width = l;
 885
 886		if (evsel__should_store_id(counter) &&
 887		    evsel__store_ids(counter, evsel_list))
 888			return -1;
 889	}
 890
 891	if (evlist__apply_filters(evsel_list, &counter)) {
 892		pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
 893			counter->filter, evsel__name(counter), errno,
 894			str_error_r(errno, msg, sizeof(msg)));
 895		return -1;
 896	}
 897
 898	if (STAT_RECORD) {
 899		int fd = perf_data__fd(&perf_stat.data);
 900
 901		if (is_pipe) {
 902			err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
 903		} else {
 904			err = perf_session__write_header(perf_stat.session, evsel_list,
 905							 fd, false);
 906		}
 907
 908		if (err < 0)
 909			return err;
 910
 911		err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,
 912							 process_synthesized_event, is_pipe);
 913		if (err < 0)
 914			return err;
 915	}
 916
 917	if (stat_config.initial_delay) {
 918		pr_info(EVLIST_DISABLED_MSG);
 919	} else {
 920		err = enable_counters();
 921		if (err)
 922			return -1;
 923	}
 924
 925	/* Exec the command, if any */
 926	if (forks)
 927		evlist__start_workload(evsel_list);
 928
 929	if (stat_config.initial_delay > 0) {
 930		usleep(stat_config.initial_delay * USEC_PER_MSEC);
 931		err = enable_counters();
 932		if (err)
 933			return -1;
 934
 935		pr_info(EVLIST_ENABLED_MSG);
 936	}
 937
 938	t0 = rdclock();
 939	clock_gettime(CLOCK_MONOTONIC, &ref_time);
 940
 941	if (forks) {
 942		if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
 943			status = dispatch_events(forks, timeout, interval, &times);
 944		if (child_pid != -1) {
 945			if (timeout)
 946				kill(child_pid, SIGTERM);
 947			wait4(child_pid, &status, 0, &stat_config.ru_data);
 
 
 948		}
 
 949
 950		if (workload_exec_errno) {
 951			const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
 952			pr_err("Workload failed: %s\n", emsg);
 953			return -1;
 954		}
 955
 956		if (WIFSIGNALED(status))
 957			psignal(WTERMSIG(status), argv[0]);
 958	} else {
 959		status = dispatch_events(forks, timeout, interval, &times);
 
 
 
 
 
 960	}
 961
 962	disable_counters();
 963
 964	t1 = rdclock();
 965
 966	if (stat_config.walltime_run_table)
 967		stat_config.walltime_run[run_idx] = t1 - t0;
 968
 969	if (interval && stat_config.summary) {
 970		stat_config.interval = 0;
 971		stat_config.stop_read_counter = true;
 972		init_stats(&walltime_nsecs_stats);
 973		update_stats(&walltime_nsecs_stats, t1 - t0);
 974
 975		evlist__copy_prev_raw_counts(evsel_list);
 976		evlist__reset_prev_raw_counts(evsel_list);
 977		evlist__reset_aggr_stats(evsel_list);
 978		perf_stat__reset_shadow_per_stat(&rt_stat);
 979	} else {
 980		update_stats(&walltime_nsecs_stats, t1 - t0);
 981		update_rusage_stats(&ru_stats, &stat_config.ru_data);
 982	}
 983
 984	/*
 985	 * Closing a group leader splits the group, and as we only disable
 986	 * group leaders, results in remaining events becoming enabled. To
 987	 * avoid arbitrary skew, we must read all counters before closing any
 988	 * group leaders.
 989	 */
 990	if (read_counters(&(struct timespec) { .tv_nsec = t1-t0 }) == 0)
 991		process_counters();
 992
 993	/*
 994	 * We need to keep evsel_list alive, because it's processed
 995	 * later the evsel_list will be closed after.
 996	 */
 997	if (!STAT_RECORD)
 998		evlist__close(evsel_list);
 999
1000	return WEXITSTATUS(status);
1001}
1002
1003static int run_perf_stat(int argc, const char **argv, int run_idx)
1004{
1005	int ret;
1006
1007	if (pre_cmd) {
1008		ret = system(pre_cmd);
1009		if (ret)
1010			return ret;
1011	}
1012
1013	if (sync_run)
1014		sync();
1015
1016	ret = __run_perf_stat(argc, argv, run_idx);
1017	if (ret)
1018		return ret;
1019
1020	if (post_cmd) {
1021		ret = system(post_cmd);
1022		if (ret)
1023			return ret;
1024	}
1025
1026	return ret;
1027}
1028
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1029static void print_counters(struct timespec *ts, int argc, const char **argv)
1030{
 
 
 
 
1031	/* Do not print anything if we record to the pipe. */
1032	if (STAT_RECORD && perf_stat.data.is_pipe)
1033		return;
1034	if (quiet)
1035		return;
1036
1037	evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1038}
1039
1040static volatile sig_atomic_t signr = -1;
1041
1042static void skip_signal(int signo)
1043{
1044	if ((child_pid == -1) || stat_config.interval)
1045		done = 1;
1046
1047	signr = signo;
1048	/*
1049	 * render child_pid harmless
1050	 * won't send SIGTERM to a random
1051	 * process in case of race condition
1052	 * and fast PID recycling
1053	 */
1054	child_pid = -1;
1055}
1056
1057static void sig_atexit(void)
1058{
1059	sigset_t set, oset;
1060
1061	/*
1062	 * avoid race condition with SIGCHLD handler
1063	 * in skip_signal() which is modifying child_pid
1064	 * goal is to avoid send SIGTERM to a random
1065	 * process
1066	 */
1067	sigemptyset(&set);
1068	sigaddset(&set, SIGCHLD);
1069	sigprocmask(SIG_BLOCK, &set, &oset);
1070
1071	if (child_pid != -1)
1072		kill(child_pid, SIGTERM);
1073
1074	sigprocmask(SIG_SETMASK, &oset, NULL);
1075
1076	if (signr == -1)
1077		return;
1078
1079	signal(signr, SIG_DFL);
1080	kill(getpid(), signr);
1081}
1082
1083void perf_stat__set_big_num(int set)
1084{
1085	stat_config.big_num = (set != 0);
1086}
1087
1088void perf_stat__set_no_csv_summary(int set)
1089{
1090	stat_config.no_csv_summary = (set != 0);
1091}
1092
1093static int stat__set_big_num(const struct option *opt __maybe_unused,
1094			     const char *s __maybe_unused, int unset)
1095{
1096	big_num_opt = unset ? 0 : 1;
1097	perf_stat__set_big_num(!unset);
1098	return 0;
1099}
1100
1101static int enable_metric_only(const struct option *opt __maybe_unused,
1102			      const char *s __maybe_unused, int unset)
1103{
1104	force_metric_only = true;
1105	stat_config.metric_only = !unset;
1106	return 0;
1107}
1108
1109static int append_metric_groups(const struct option *opt __maybe_unused,
1110			       const char *str,
1111			       int unset __maybe_unused)
1112{
1113	if (metrics) {
1114		char *tmp;
1115
1116		if (asprintf(&tmp, "%s,%s", metrics, str) < 0)
1117			return -ENOMEM;
1118		free(metrics);
1119		metrics = tmp;
1120	} else {
1121		metrics = strdup(str);
1122		if (!metrics)
1123			return -ENOMEM;
1124	}
1125	return 0;
1126}
1127
1128static int parse_control_option(const struct option *opt,
1129				const char *str,
1130				int unset __maybe_unused)
1131{
1132	struct perf_stat_config *config = opt->value;
1133
1134	return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);
1135}
1136
1137static int parse_stat_cgroups(const struct option *opt,
1138			      const char *str, int unset)
1139{
1140	if (stat_config.cgroup_list) {
1141		pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
1142		return -1;
1143	}
1144
1145	return parse_cgroups(opt, str, unset);
1146}
1147
1148static int parse_hybrid_type(const struct option *opt,
1149			     const char *str,
1150			     int unset __maybe_unused)
1151{
1152	struct evlist *evlist = *(struct evlist **)opt->value;
1153
1154	if (!list_empty(&evlist->core.entries)) {
1155		fprintf(stderr, "Must define cputype before events/metrics\n");
1156		return -1;
1157	}
1158
1159	evlist->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu(str);
1160	if (!evlist->hybrid_pmu_name) {
1161		fprintf(stderr, "--cputype %s is not supported!\n", str);
1162		return -1;
1163	}
1164
1165	return 0;
1166}
1167
1168static struct option stat_options[] = {
1169	OPT_BOOLEAN('T', "transaction", &transaction_run,
1170		    "hardware transaction statistics"),
1171	OPT_CALLBACK('e', "event", &evsel_list, "event",
1172		     "event selector. use 'perf list' to list available events",
1173		     parse_events_option),
1174	OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1175		     "event filter", parse_filter),
1176	OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,
1177		    "child tasks do not inherit counters"),
1178	OPT_STRING('p', "pid", &target.pid, "pid",
1179		   "stat events on existing process id"),
1180	OPT_STRING('t', "tid", &target.tid, "tid",
1181		   "stat events on existing thread id"),
1182#ifdef HAVE_BPF_SKEL
1183	OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",
1184		   "stat events on existing bpf program id"),
1185	OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,
1186		    "use bpf program to count events"),
1187	OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",
1188		   "path to perf_event_attr map"),
1189#endif
1190	OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1191		    "system-wide collection from all CPUs"),
1192	OPT_BOOLEAN(0, "scale", &stat_config.scale,
1193		    "Use --no-scale to disable counter scaling for multiplexing"),
 
1194	OPT_INCR('v', "verbose", &verbose,
1195		    "be more verbose (show counter open errors, etc)"),
1196	OPT_INTEGER('r', "repeat", &stat_config.run_count,
1197		    "repeat command and print average + stddev (max: 100, forever: 0)"),
1198	OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,
1199		    "display details about each run (only with -r option)"),
1200	OPT_BOOLEAN('n', "null", &stat_config.null_run,
1201		    "null run - dont start any counters"),
1202	OPT_INCR('d', "detailed", &detailed_run,
1203		    "detailed run - start a lot of events"),
1204	OPT_BOOLEAN('S', "sync", &sync_run,
1205		    "call sync() before starting a run"),
1206	OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1207			   "print large numbers with thousands\' separators",
1208			   stat__set_big_num),
1209	OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1210		    "list of cpus to monitor in system-wide"),
1211	OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1212		    "disable CPU count aggregation", AGGR_NONE),
1213	OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"),
1214	OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge,
1215		    "Merge identical named hybrid events"),
1216	OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
1217		   "print counts with custom separator"),
1218	OPT_BOOLEAN('j', "json-output", &stat_config.json_output,
1219		   "print counts in JSON format"),
1220	OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1221		     "monitor event in cgroup name only", parse_stat_cgroups),
1222	OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",
1223		    "expand events for each cgroup"),
1224	OPT_STRING('o', "output", &output_name, "file", "output file name"),
1225	OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1226	OPT_INTEGER(0, "log-fd", &output_fd,
1227		    "log output to fd, instead of stderr"),
1228	OPT_STRING(0, "pre", &pre_cmd, "command",
1229			"command to run prior to the measured command"),
1230	OPT_STRING(0, "post", &post_cmd, "command",
1231			"command to run after to the measured command"),
1232	OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1233		    "print counts at regular interval in ms "
1234		    "(overhead is possible for values <= 100ms)"),
1235	OPT_INTEGER(0, "interval-count", &stat_config.times,
1236		    "print counts for fixed number of times"),
1237	OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,
1238		    "clear screen in between new interval"),
1239	OPT_UINTEGER(0, "timeout", &stat_config.timeout,
1240		    "stop workload and print counts after a timeout period in ms (>= 10ms)"),
1241	OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1242		     "aggregate counts per processor socket", AGGR_SOCKET),
1243	OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode,
1244		     "aggregate counts per processor die", AGGR_DIE),
1245	OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1246		     "aggregate counts per physical processor core", AGGR_CORE),
1247	OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1248		     "aggregate counts per thread", AGGR_THREAD),
1249	OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode,
1250		     "aggregate counts per numa node", AGGR_NODE),
1251	OPT_INTEGER('D', "delay", &stat_config.initial_delay,
1252		    "ms to wait before starting measurement after program start (-1: start with events disabled)"),
1253	OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
1254			"Only print computed metrics. No raw values", enable_metric_only),
1255	OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,
1256		       "don't group metric events, impacts multiplexing"),
1257	OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
1258		       "don't try to share events between metrics in a group"),
1259	OPT_BOOLEAN(0, "topdown", &topdown_run,
1260			"measure top-down statistics"),
1261	OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
1262			"Set the metrics level for the top-down statistics (0: max level)"),
1263	OPT_BOOLEAN(0, "smi-cost", &smi_cost,
1264			"measure SMI cost"),
1265	OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
1266		     "monitor specified metrics or metric groups (separated by ,)",
1267		     append_metric_groups),
1268	OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,
1269			 "Configure all used events to run in kernel space.",
1270			 PARSE_OPT_EXCLUSIVE),
1271	OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,
1272			 "Configure all used events to run in user space.",
1273			 PARSE_OPT_EXCLUSIVE),
1274	OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,
1275		    "Use with 'percore' event qualifier to show the event "
1276		    "counts of one hardware thread by sum up total hardware "
1277		    "threads of same physical core"),
1278	OPT_BOOLEAN(0, "summary", &stat_config.summary,
1279		       "print summary for interval mode"),
1280	OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
1281		       "don't print 'summary' for CSV summary output"),
1282	OPT_BOOLEAN(0, "quiet", &quiet,
1283			"don't print any output, messages or warnings (useful with record)"),
1284	OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
1285		     "Only enable events on applying cpu with this type "
1286		     "for hybrid platform (e.g. core or atom)",
1287		     parse_hybrid_type),
1288#ifdef HAVE_LIBPFM
1289	OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
1290		"libpfm4 event selector. use 'perf list' to list available events",
1291		parse_libpfm_events_option),
1292#endif
1293	OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",
1294		     "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"
1295		     "\t\t\t  Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"
1296		     "\t\t\t  Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",
1297		      parse_control_option),
1298	OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",
1299			    "measure I/O performance metrics provided by arch/platform",
1300			    iostat_parse),
1301	OPT_END()
1302};
1303
1304static const char *const aggr_mode__string[] = {
1305	[AGGR_CORE] = "core",
1306	[AGGR_DIE] = "die",
1307	[AGGR_GLOBAL] = "global",
1308	[AGGR_NODE] = "node",
1309	[AGGR_NONE] = "none",
1310	[AGGR_SOCKET] = "socket",
1311	[AGGR_THREAD] = "thread",
1312	[AGGR_UNSET] = "unset",
1313};
1314
1315static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
1316						struct perf_cpu cpu)
1317{
1318	return aggr_cpu_id__socket(cpu, /*data=*/NULL);
1319}
1320
1321static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
1322					     struct perf_cpu cpu)
1323{
1324	return aggr_cpu_id__die(cpu, /*data=*/NULL);
1325}
1326
1327static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
1328					      struct perf_cpu cpu)
1329{
1330	return aggr_cpu_id__core(cpu, /*data=*/NULL);
1331}
1332
1333static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
1334					      struct perf_cpu cpu)
1335{
1336	return aggr_cpu_id__node(cpu, /*data=*/NULL);
1337}
1338
1339static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused,
1340						struct perf_cpu cpu)
1341{
1342	return aggr_cpu_id__global(cpu, /*data=*/NULL);
1343}
1344
1345static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused,
1346					     struct perf_cpu cpu)
1347{
1348	return aggr_cpu_id__cpu(cpu, /*data=*/NULL);
1349}
1350
1351static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
1352					      aggr_get_id_t get_id, struct perf_cpu cpu)
1353{
1354	struct aggr_cpu_id id;
1355
1356	/* per-process mode - should use global aggr mode */
1357	if (cpu.cpu == -1)
1358		return get_id(config, cpu);
1359
1360	if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu]))
1361		config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu);
1362
1363	id = config->cpus_aggr_map->map[cpu.cpu];
1364	return id;
1365}
1366
1367static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
1368						       struct perf_cpu cpu)
1369{
1370	return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);
1371}
1372
1373static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
1374						    struct perf_cpu cpu)
1375{
1376	return perf_stat__get_aggr(config, perf_stat__get_die, cpu);
1377}
1378
1379static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
1380						     struct perf_cpu cpu)
1381{
1382	return perf_stat__get_aggr(config, perf_stat__get_core, cpu);
1383}
1384
1385static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
1386						     struct perf_cpu cpu)
1387{
1388	return perf_stat__get_aggr(config, perf_stat__get_node, cpu);
1389}
1390
1391static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config,
1392						       struct perf_cpu cpu)
1393{
1394	return perf_stat__get_aggr(config, perf_stat__get_global, cpu);
1395}
1396
1397static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config,
1398						    struct perf_cpu cpu)
1399{
1400	return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu);
1401}
1402
1403static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode)
1404{
1405	switch (aggr_mode) {
1406	case AGGR_SOCKET:
1407		return aggr_cpu_id__socket;
1408	case AGGR_DIE:
1409		return aggr_cpu_id__die;
 
 
 
1410	case AGGR_CORE:
1411		return aggr_cpu_id__core;
1412	case AGGR_NODE:
1413		return aggr_cpu_id__node;
1414	case AGGR_NONE:
1415		return aggr_cpu_id__cpu;
1416	case AGGR_GLOBAL:
1417		return aggr_cpu_id__global;
1418	case AGGR_THREAD:
1419	case AGGR_UNSET:
1420	case AGGR_MAX:
1421	default:
1422		return NULL;
1423	}
1424}
1425
1426static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode)
1427{
1428	switch (aggr_mode) {
1429	case AGGR_SOCKET:
1430		return perf_stat__get_socket_cached;
1431	case AGGR_DIE:
1432		return perf_stat__get_die_cached;
1433	case AGGR_CORE:
1434		return perf_stat__get_core_cached;
1435	case AGGR_NODE:
1436		return perf_stat__get_node_cached;
1437	case AGGR_NONE:
1438		return perf_stat__get_cpu_cached;
1439	case AGGR_GLOBAL:
1440		return perf_stat__get_global_cached;
1441	case AGGR_THREAD:
1442	case AGGR_UNSET:
1443	case AGGR_MAX:
1444	default:
1445		return NULL;
1446	}
1447}
1448
1449static int perf_stat_init_aggr_mode(void)
1450{
1451	int nr;
1452	aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode);
1453
1454	if (get_id) {
1455		bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1456		stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1457							 get_id, /*data=*/NULL, needs_sort);
1458		if (!stat_config.aggr_map) {
1459			pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]);
1460			return -1;
1461		}
1462		stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode);
1463	}
1464
1465	if (stat_config.aggr_mode == AGGR_THREAD) {
1466		nr = perf_thread_map__nr(evsel_list->core.threads);
1467		stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1468		if (stat_config.aggr_map == NULL)
1469			return -ENOMEM;
1470
1471		for (int s = 0; s < nr; s++) {
1472			struct aggr_cpu_id id = aggr_cpu_id__empty();
1473
1474			id.thread_idx = s;
1475			stat_config.aggr_map->map[s] = id;
1476		}
1477		return 0;
1478	}
1479
1480	/*
1481	 * The evsel_list->cpus is the base we operate on,
1482	 * taking the highest cpu number to be the size of
1483	 * the aggregation translate cpumap.
1484	 */
1485	if (evsel_list->core.user_requested_cpus)
1486		nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
1487	else
1488		nr = 0;
1489	stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
1490	return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
1491}
1492
1493static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
1494{
1495	if (map) {
1496		WARN_ONCE(refcount_read(&map->refcnt) != 0,
1497			  "cpu_aggr_map refcnt unbalanced\n");
1498		free(map);
1499	}
1500}
1501
1502static void cpu_aggr_map__put(struct cpu_aggr_map *map)
1503{
1504	if (map && refcount_dec_and_test(&map->refcnt))
1505		cpu_aggr_map__delete(map);
1506}
1507
1508static void perf_stat__exit_aggr_mode(void)
1509{
1510	cpu_aggr_map__put(stat_config.aggr_map);
1511	cpu_aggr_map__put(stat_config.cpus_aggr_map);
1512	stat_config.aggr_map = NULL;
1513	stat_config.cpus_aggr_map = NULL;
1514}
1515
1516static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data)
1517{
1518	struct perf_env *env = data;
1519	struct aggr_cpu_id id = aggr_cpu_id__empty();
1520
1521	if (cpu.cpu != -1)
1522		id.socket = env->cpu[cpu.cpu].socket_id;
1523
1524	return id;
1525}
1526
1527static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data)
1528{
1529	struct perf_env *env = data;
1530	struct aggr_cpu_id id = aggr_cpu_id__empty();
1531
1532	if (cpu.cpu != -1) {
1533		/*
1534		 * die_id is relative to socket, so start
1535		 * with the socket ID and then add die to
1536		 * make a unique ID.
1537		 */
1538		id.socket = env->cpu[cpu.cpu].socket_id;
1539		id.die = env->cpu[cpu.cpu].die_id;
1540	}
1541
1542	return id;
1543}
1544
1545static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data)
1546{
1547	struct perf_env *env = data;
1548	struct aggr_cpu_id id = aggr_cpu_id__empty();
1549
1550	if (cpu.cpu != -1) {
1551		/*
1552		 * core_id is relative to socket and die,
1553		 * we need a global id. So we set
1554		 * socket, die id and core id
1555		 */
1556		id.socket = env->cpu[cpu.cpu].socket_id;
1557		id.die = env->cpu[cpu.cpu].die_id;
1558		id.core = env->cpu[cpu.cpu].core_id;
1559	}
1560
1561	return id;
1562}
1563
1564static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data)
1565{
1566	struct perf_env *env = data;
1567	struct aggr_cpu_id id = aggr_cpu_id__empty();
1568
1569	if (cpu.cpu != -1) {
1570		/*
1571		 * core_id is relative to socket and die,
1572		 * we need a global id. So we set
1573		 * socket, die id and core id
 
1574		 */
1575		id.socket = env->cpu[cpu.cpu].socket_id;
1576		id.die = env->cpu[cpu.cpu].die_id;
1577		id.core = env->cpu[cpu.cpu].core_id;
1578		id.cpu = cpu;
1579	}
1580
1581	return id;
1582}
1583
1584static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data)
1585{
1586	struct aggr_cpu_id id = aggr_cpu_id__empty();
1587
1588	id.node = perf_env__numa_node(data, cpu);
1589	return id;
1590}
1591
1592static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused,
1593							   void *data __maybe_unused)
1594{
1595	struct aggr_cpu_id id = aggr_cpu_id__empty();
1596
1597	/* it always aggregates to the cpu 0 */
1598	id.cpu = (struct perf_cpu){ .cpu = 0 };
1599	return id;
1600}
1601
1602static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
1603						     struct perf_cpu cpu)
1604{
1605	return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1606}
1607static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
1608						  struct perf_cpu cpu)
1609{
1610	return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1611}
1612
1613static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
1614						   struct perf_cpu cpu)
1615{
1616	return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1617}
1618
1619static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused,
1620						  struct perf_cpu cpu)
1621{
1622	return perf_env__get_cpu_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1623}
1624
1625static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
1626						   struct perf_cpu cpu)
1627{
1628	return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1629}
1630
1631static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused,
1632						     struct perf_cpu cpu)
1633{
1634	return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1635}
1636
1637static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode)
1638{
1639	switch (aggr_mode) {
1640	case AGGR_SOCKET:
1641		return perf_env__get_socket_aggr_by_cpu;
1642	case AGGR_DIE:
1643		return perf_env__get_die_aggr_by_cpu;
 
 
 
1644	case AGGR_CORE:
1645		return perf_env__get_core_aggr_by_cpu;
1646	case AGGR_NODE:
1647		return perf_env__get_node_aggr_by_cpu;
1648	case AGGR_GLOBAL:
1649		return perf_env__get_global_aggr_by_cpu;
 
1650	case AGGR_NONE:
1651		return perf_env__get_cpu_aggr_by_cpu;
1652	case AGGR_THREAD:
1653	case AGGR_UNSET:
1654	case AGGR_MAX:
1655	default:
1656		return NULL;
1657	}
1658}
1659
1660static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode)
1661{
1662	switch (aggr_mode) {
1663	case AGGR_SOCKET:
1664		return perf_stat__get_socket_file;
1665	case AGGR_DIE:
1666		return perf_stat__get_die_file;
1667	case AGGR_CORE:
1668		return perf_stat__get_core_file;
1669	case AGGR_NODE:
1670		return perf_stat__get_node_file;
1671	case AGGR_GLOBAL:
1672		return perf_stat__get_global_file;
1673	case AGGR_NONE:
1674		return perf_stat__get_cpu_file;
1675	case AGGR_THREAD:
1676	case AGGR_UNSET:
1677	case AGGR_MAX:
1678	default:
1679		return NULL;
1680	}
1681}
1682
1683static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1684{
1685	struct perf_env *env = &st->session->header.env;
1686	aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode);
1687	bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1688
1689	if (stat_config.aggr_mode == AGGR_THREAD) {
1690		int nr = perf_thread_map__nr(evsel_list->core.threads);
1691
1692		stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1693		if (stat_config.aggr_map == NULL)
1694			return -ENOMEM;
1695
1696		for (int s = 0; s < nr; s++) {
1697			struct aggr_cpu_id id = aggr_cpu_id__empty();
1698
1699			id.thread_idx = s;
1700			stat_config.aggr_map->map[s] = id;
1701		}
1702		return 0;
1703	}
1704
1705	if (!get_id)
1706		return 0;
1707
1708	stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1709						 get_id, env, needs_sort);
1710	if (!stat_config.aggr_map) {
1711		pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]);
1712		return -1;
1713	}
1714	stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode);
1715	return 0;
1716}
1717
1718/*
1719 * Add default attributes, if there were no attributes specified or
1720 * if -d/--detailed, -d -d or -d -d -d is used:
1721 */
1722static int add_default_attributes(void)
1723{
1724	int err;
1725	struct perf_event_attr default_attrs0[] = {
1726
1727  { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK		},
1728  { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES	},
1729  { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS		},
1730  { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS		},
1731
1732  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES		},
1733};
1734	struct perf_event_attr frontend_attrs[] = {
1735  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND	},
1736};
1737	struct perf_event_attr backend_attrs[] = {
1738  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND	},
1739};
1740	struct perf_event_attr default_attrs1[] = {
1741  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS		},
1742  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS	},
1743  { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES		},
1744
1745};
1746
1747/*
1748 * Detailed stats (-d), covering the L1 and last level data caches:
1749 */
1750	struct perf_event_attr detailed_attrs[] = {
1751
1752  { .type = PERF_TYPE_HW_CACHE,
1753    .config =
1754	 PERF_COUNT_HW_CACHE_L1D		<<  0  |
1755	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1756	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1757
1758  { .type = PERF_TYPE_HW_CACHE,
1759    .config =
1760	 PERF_COUNT_HW_CACHE_L1D		<<  0  |
1761	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1762	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1763
1764  { .type = PERF_TYPE_HW_CACHE,
1765    .config =
1766	 PERF_COUNT_HW_CACHE_LL			<<  0  |
1767	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1768	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1769
1770  { .type = PERF_TYPE_HW_CACHE,
1771    .config =
1772	 PERF_COUNT_HW_CACHE_LL			<<  0  |
1773	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1774	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1775};
1776
1777/*
1778 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1779 */
1780	struct perf_event_attr very_detailed_attrs[] = {
1781
1782  { .type = PERF_TYPE_HW_CACHE,
1783    .config =
1784	 PERF_COUNT_HW_CACHE_L1I		<<  0  |
1785	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1786	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1787
1788  { .type = PERF_TYPE_HW_CACHE,
1789    .config =
1790	 PERF_COUNT_HW_CACHE_L1I		<<  0  |
1791	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1792	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1793
1794  { .type = PERF_TYPE_HW_CACHE,
1795    .config =
1796	 PERF_COUNT_HW_CACHE_DTLB		<<  0  |
1797	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1798	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1799
1800  { .type = PERF_TYPE_HW_CACHE,
1801    .config =
1802	 PERF_COUNT_HW_CACHE_DTLB		<<  0  |
1803	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1804	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1805
1806  { .type = PERF_TYPE_HW_CACHE,
1807    .config =
1808	 PERF_COUNT_HW_CACHE_ITLB		<<  0  |
1809	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1810	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1811
1812  { .type = PERF_TYPE_HW_CACHE,
1813    .config =
1814	 PERF_COUNT_HW_CACHE_ITLB		<<  0  |
1815	(PERF_COUNT_HW_CACHE_OP_READ		<<  8) |
1816	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1817
1818};
1819
1820/*
1821 * Very, very detailed stats (-d -d -d), adding prefetch events:
1822 */
1823	struct perf_event_attr very_very_detailed_attrs[] = {
1824
1825  { .type = PERF_TYPE_HW_CACHE,
1826    .config =
1827	 PERF_COUNT_HW_CACHE_L1D		<<  0  |
1828	(PERF_COUNT_HW_CACHE_OP_PREFETCH	<<  8) |
1829	(PERF_COUNT_HW_CACHE_RESULT_ACCESS	<< 16)				},
1830
1831  { .type = PERF_TYPE_HW_CACHE,
1832    .config =
1833	 PERF_COUNT_HW_CACHE_L1D		<<  0  |
1834	(PERF_COUNT_HW_CACHE_OP_PREFETCH	<<  8) |
1835	(PERF_COUNT_HW_CACHE_RESULT_MISS	<< 16)				},
1836};
1837
1838	struct perf_event_attr default_null_attrs[] = {};
1839
1840	/* Set attrs if no event is selected and !null_run: */
1841	if (stat_config.null_run)
1842		return 0;
1843
1844	if (transaction_run) {
1845		struct parse_events_error errinfo;
1846		/* Handle -T as -M transaction. Once platform specific metrics
1847		 * support has been added to the json files, all architectures
1848		 * will use this approach. To determine transaction support
1849		 * on an architecture test for such a metric name.
1850		 */
1851		if (metricgroup__has_metric("transaction")) {
1852			return metricgroup__parse_groups(evsel_list, "transaction",
1853							 stat_config.metric_no_group,
1854							 stat_config.metric_no_merge,
1855							 stat_config.user_requested_cpu_list,
1856							 stat_config.system_wide,
1857							 &stat_config.metric_events);
1858		}
1859
1860		parse_events_error__init(&errinfo);
1861		if (pmu_have_event("cpu", "cycles-ct") &&
1862		    pmu_have_event("cpu", "el-start"))
1863			err = parse_events(evsel_list, transaction_attrs,
1864					   &errinfo);
1865		else
1866			err = parse_events(evsel_list,
1867					   transaction_limited_attrs,
1868					   &errinfo);
1869		if (err) {
1870			fprintf(stderr, "Cannot set up transaction events\n");
1871			parse_events_error__print(&errinfo, transaction_attrs);
1872		}
1873		parse_events_error__exit(&errinfo);
1874		return err ? -1 : 0;
1875	}
1876
1877	if (smi_cost) {
1878		struct parse_events_error errinfo;
1879		int smi;
1880
1881		if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
1882			fprintf(stderr, "freeze_on_smi is not supported.\n");
1883			return -1;
1884		}
1885
1886		if (!smi) {
1887			if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
1888				fprintf(stderr, "Failed to set freeze_on_smi.\n");
1889				return -1;
1890			}
1891			smi_reset = true;
1892		}
1893
1894		if (!pmu_have_event("msr", "aperf") ||
1895		    !pmu_have_event("msr", "smi")) {
1896			fprintf(stderr, "To measure SMI cost, it needs "
1897				"msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
1898			return -1;
1899		}
1900		if (!force_metric_only)
1901			stat_config.metric_only = true;
1902
1903		parse_events_error__init(&errinfo);
1904		err = parse_events(evsel_list, smi_cost_attrs, &errinfo);
1905		if (err) {
1906			parse_events_error__print(&errinfo, smi_cost_attrs);
1907			fprintf(stderr, "Cannot set up SMI cost events\n");
1908		}
1909		parse_events_error__exit(&errinfo);
1910		return err ? -1 : 0;
1911	}
1912
1913	if (topdown_run) {
1914		const char **metric_attrs = topdown_metric_attrs;
1915		unsigned int max_level = 1;
1916		char *str = NULL;
1917		bool warn = false;
1918		const char *pmu_name = arch_get_topdown_pmu_name(evsel_list, true);
1919
1920		if (!force_metric_only)
1921			stat_config.metric_only = true;
1922
1923		if (pmu_have_event(pmu_name, topdown_metric_L2_attrs[5])) {
1924			metric_attrs = topdown_metric_L2_attrs;
1925			max_level = 2;
1926		}
1927
1928		if (stat_config.topdown_level > max_level) {
1929			pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
1930			return -1;
1931		} else if (!stat_config.topdown_level)
1932			stat_config.topdown_level = max_level;
1933
1934		if (topdown_filter_events(metric_attrs, &str, 1, pmu_name) < 0) {
1935			pr_err("Out of memory\n");
1936			return -1;
1937		}
1938
1939		if (metric_attrs[0] && str) {
1940			if (!stat_config.interval && !stat_config.metric_only) {
1941				fprintf(stat_config.output,
1942					"Topdown accuracy may decrease when measuring long periods.\n"
1943					"Please print the result regularly, e.g. -I1000\n");
1944			}
1945			goto setup_metrics;
1946		}
1947
1948		zfree(&str);
1949
1950		if (stat_config.aggr_mode != AGGR_GLOBAL &&
1951		    stat_config.aggr_mode != AGGR_CORE) {
1952			pr_err("top down event configuration requires --per-core mode\n");
1953			return -1;
1954		}
1955		stat_config.aggr_mode = AGGR_CORE;
1956		if (nr_cgroups || !target__has_cpu(&target)) {
1957			pr_err("top down event configuration requires system-wide mode (-a)\n");
1958			return -1;
1959		}
1960
1961		if (topdown_filter_events(topdown_attrs, &str,
1962				arch_topdown_check_group(&warn),
1963				pmu_name) < 0) {
1964			pr_err("Out of memory\n");
1965			return -1;
1966		}
1967
1968		if (topdown_attrs[0] && str) {
1969			struct parse_events_error errinfo;
1970			if (warn)
1971				arch_topdown_group_warn();
1972setup_metrics:
1973			parse_events_error__init(&errinfo);
1974			err = parse_events(evsel_list, str, &errinfo);
1975			if (err) {
1976				fprintf(stderr,
1977					"Cannot set up top down events %s: %d\n",
1978					str, err);
1979				parse_events_error__print(&errinfo, str);
1980				parse_events_error__exit(&errinfo);
1981				free(str);
1982				return -1;
1983			}
1984			parse_events_error__exit(&errinfo);
1985		} else {
1986			fprintf(stderr, "System does not support topdown\n");
1987			return -1;
1988		}
1989		free(str);
1990	}
1991
1992	if (!stat_config.topdown_level)
1993		stat_config.topdown_level = TOPDOWN_MAX_LEVEL;
1994
1995	if (!evsel_list->core.nr_entries) {
1996		if (target__has_cpu(&target))
1997			default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
1998
1999		if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
2000			return -1;
2001		if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
2002			if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0)
 
2003				return -1;
2004		}
2005		if (pmu_have_event("cpu", "stalled-cycles-backend")) {
2006			if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0)
 
2007				return -1;
2008		}
2009		if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
2010			return -1;
2011		/* Platform specific attrs */
2012		if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0)
2013			return -1;
2014	}
2015
2016	/* Detailed events get appended to the event list: */
2017
2018	if (detailed_run <  1)
2019		return 0;
2020
2021	/* Append detailed run extra attributes: */
2022	if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
2023		return -1;
2024
2025	if (detailed_run < 2)
2026		return 0;
2027
2028	/* Append very detailed run extra attributes: */
2029	if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
2030		return -1;
2031
2032	if (detailed_run < 3)
2033		return 0;
2034
2035	/* Append very, very detailed run extra attributes: */
2036	return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
2037}
2038
2039static const char * const stat_record_usage[] = {
2040	"perf stat record [<options>]",
2041	NULL,
2042};
2043
2044static void init_features(struct perf_session *session)
2045{
2046	int feat;
2047
2048	for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2049		perf_header__set_feat(&session->header, feat);
2050
2051	perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
2052	perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2053	perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2054	perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2055	perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2056}
2057
2058static int __cmd_record(int argc, const char **argv)
2059{
2060	struct perf_session *session;
2061	struct perf_data *data = &perf_stat.data;
2062
2063	argc = parse_options(argc, argv, stat_options, stat_record_usage,
2064			     PARSE_OPT_STOP_AT_NON_OPTION);
2065
2066	if (output_name)
2067		data->path = output_name;
2068
2069	if (stat_config.run_count != 1 || forever) {
2070		pr_err("Cannot use -r option with perf stat record.\n");
2071		return -1;
2072	}
2073
2074	session = perf_session__new(data, NULL);
2075	if (IS_ERR(session)) {
2076		pr_err("Perf session creation failed\n");
2077		return PTR_ERR(session);
2078	}
2079
2080	init_features(session);
2081
2082	session->evlist   = evsel_list;
2083	perf_stat.session = session;
2084	perf_stat.record  = true;
2085	return argc;
2086}
2087
2088static int process_stat_round_event(struct perf_session *session,
2089				    union perf_event *event)
 
2090{
2091	struct perf_record_stat_round *stat_round = &event->stat_round;
 
2092	struct timespec tsh, *ts = NULL;
2093	const char **argv = session->header.env.cmdline_argv;
2094	int argc = session->header.env.nr_cmdline;
2095
2096	process_counters();
 
2097
2098	if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2099		update_stats(&walltime_nsecs_stats, stat_round->time);
2100
2101	if (stat_config.interval && stat_round->time) {
2102		tsh.tv_sec  = stat_round->time / NSEC_PER_SEC;
2103		tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2104		ts = &tsh;
2105	}
2106
2107	print_counters(ts, argc, argv);
2108	return 0;
2109}
2110
2111static
2112int process_stat_config_event(struct perf_session *session,
2113			      union perf_event *event)
 
2114{
2115	struct perf_tool *tool = session->tool;
2116	struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2117
2118	perf_event__read_stat_config(&stat_config, &event->stat_config);
2119
2120	if (perf_cpu_map__empty(st->cpus)) {
2121		if (st->aggr_mode != AGGR_UNSET)
2122			pr_warning("warning: processing task data, aggregation mode not set\n");
2123	} else if (st->aggr_mode != AGGR_UNSET) {
 
 
 
2124		stat_config.aggr_mode = st->aggr_mode;
2125	}
2126
2127	if (perf_stat.data.is_pipe)
2128		perf_stat_init_aggr_mode();
2129	else
2130		perf_stat_init_aggr_mode_file(st);
2131
2132	if (stat_config.aggr_map) {
2133		int nr_aggr = stat_config.aggr_map->nr;
2134
2135		if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) {
2136			pr_err("cannot allocate aggr counts\n");
2137			return -1;
2138		}
2139	}
2140	return 0;
2141}
2142
2143static int set_maps(struct perf_stat *st)
2144{
2145	if (!st->cpus || !st->threads)
2146		return 0;
2147
2148	if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2149		return -EINVAL;
2150
2151	perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);
2152
2153	if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true))
2154		return -ENOMEM;
2155
2156	st->maps_allocated = true;
2157	return 0;
2158}
2159
2160static
2161int process_thread_map_event(struct perf_session *session,
2162			     union perf_event *event)
 
2163{
2164	struct perf_tool *tool = session->tool;
2165	struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2166
2167	if (st->threads) {
2168		pr_warning("Extra thread map event, ignoring.\n");
2169		return 0;
2170	}
2171
2172	st->threads = thread_map__new_event(&event->thread_map);
2173	if (!st->threads)
2174		return -ENOMEM;
2175
2176	return set_maps(st);
2177}
2178
2179static
2180int process_cpu_map_event(struct perf_session *session,
2181			  union perf_event *event)
 
2182{
2183	struct perf_tool *tool = session->tool;
2184	struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2185	struct perf_cpu_map *cpus;
2186
2187	if (st->cpus) {
2188		pr_warning("Extra cpu map event, ignoring.\n");
2189		return 0;
2190	}
2191
2192	cpus = cpu_map__new_data(&event->cpu_map.data);
2193	if (!cpus)
2194		return -ENOMEM;
2195
2196	st->cpus = cpus;
2197	return set_maps(st);
2198}
2199
2200static const char * const stat_report_usage[] = {
2201	"perf stat report [<options>]",
2202	NULL,
2203};
2204
2205static struct perf_stat perf_stat = {
2206	.tool = {
2207		.attr		= perf_event__process_attr,
2208		.event_update	= perf_event__process_event_update,
2209		.thread_map	= process_thread_map_event,
2210		.cpu_map	= process_cpu_map_event,
2211		.stat_config	= process_stat_config_event,
2212		.stat		= perf_event__process_stat_event,
2213		.stat_round	= process_stat_round_event,
2214	},
2215	.aggr_mode = AGGR_UNSET,
2216};
2217
2218static int __cmd_report(int argc, const char **argv)
2219{
2220	struct perf_session *session;
2221	const struct option options[] = {
2222	OPT_STRING('i', "input", &input_name, "file", "input file name"),
2223	OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2224		     "aggregate counts per processor socket", AGGR_SOCKET),
2225	OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,
2226		     "aggregate counts per processor die", AGGR_DIE),
2227	OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2228		     "aggregate counts per physical processor core", AGGR_CORE),
2229	OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,
2230		     "aggregate counts per numa node", AGGR_NODE),
2231	OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2232		     "disable CPU count aggregation", AGGR_NONE),
2233	OPT_END()
2234	};
2235	struct stat st;
2236	int ret;
2237
2238	argc = parse_options(argc, argv, options, stat_report_usage, 0);
2239
2240	if (!input_name || !strlen(input_name)) {
2241		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2242			input_name = "-";
2243		else
2244			input_name = "perf.data";
2245	}
2246
2247	perf_stat__init_shadow_stats();
2248
2249	perf_stat.data.path = input_name;
2250	perf_stat.data.mode = PERF_DATA_MODE_READ;
2251
2252	session = perf_session__new(&perf_stat.data, &perf_stat.tool);
2253	if (IS_ERR(session))
2254		return PTR_ERR(session);
2255
2256	perf_stat.session  = session;
2257	stat_config.output = stderr;
2258	evsel_list         = session->evlist;
2259
2260	ret = perf_session__process_events(session);
2261	if (ret)
2262		return ret;
2263
2264	perf_session__delete(session);
2265	return 0;
2266}
2267
2268static void setup_system_wide(int forks)
2269{
2270	/*
2271	 * Make system wide (-a) the default target if
2272	 * no target was specified and one of following
2273	 * conditions is met:
2274	 *
2275	 *   - there's no workload specified
2276	 *   - there is workload specified but all requested
2277	 *     events are system wide events
2278	 */
2279	if (!target__none(&target))
2280		return;
2281
2282	if (!forks)
2283		target.system_wide = true;
2284	else {
2285		struct evsel *counter;
2286
2287		evlist__for_each_entry(evsel_list, counter) {
2288			if (!counter->core.requires_cpu &&
2289			    strcmp(counter->name, "duration_time")) {
2290				return;
2291			}
2292		}
2293
2294		if (evsel_list->core.nr_entries)
2295			target.system_wide = true;
2296	}
2297}
2298
2299int cmd_stat(int argc, const char **argv)
2300{
2301	const char * const stat_usage[] = {
2302		"perf stat [<options>] [<command>]",
2303		NULL
2304	};
2305	int status = -EINVAL, run_idx, err;
2306	const char *mode;
2307	FILE *output = stderr;
2308	unsigned int interval, timeout;
2309	const char * const stat_subcommands[] = { "record", "report" };
2310	char errbuf[BUFSIZ];
2311
2312	setlocale(LC_ALL, "");
2313
2314	evsel_list = evlist__new();
2315	if (evsel_list == NULL)
2316		return -ENOMEM;
2317
2318	parse_events__shrink_config_terms();
2319
2320	/* String-parsing callback-based options would segfault when negated */
2321	set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);
2322	set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);
2323	set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);
2324
2325	argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2326					(const char **) stat_usage,
2327					PARSE_OPT_STOP_AT_NON_OPTION);
 
2328
2329	if (stat_config.csv_sep) {
2330		stat_config.csv_output = true;
2331		if (!strcmp(stat_config.csv_sep, "\\t"))
2332			stat_config.csv_sep = "\t";
2333	} else
2334		stat_config.csv_sep = DEFAULT_SEPARATOR;
2335
2336	if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {
2337		argc = __cmd_record(argc, argv);
2338		if (argc < 0)
2339			return -1;
2340	} else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0]))
2341		return __cmd_report(argc, argv);
2342
2343	interval = stat_config.interval;
2344	timeout = stat_config.timeout;
2345
2346	/*
2347	 * For record command the -o is already taken care of.
2348	 */
2349	if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2350		output = NULL;
2351
2352	if (output_name && output_fd) {
2353		fprintf(stderr, "cannot use both --output and --log-fd\n");
2354		parse_options_usage(stat_usage, stat_options, "o", 1);
2355		parse_options_usage(NULL, stat_options, "log-fd", 0);
2356		goto out;
2357	}
2358
2359	if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2360		fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2361		goto out;
2362	}
2363
2364	if (stat_config.metric_only && stat_config.run_count > 1) {
2365		fprintf(stderr, "--metric-only is not supported with -r\n");
2366		goto out;
2367	}
2368
2369	if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
2370		fprintf(stderr, "--table is only supported with -r\n");
2371		parse_options_usage(stat_usage, stat_options, "r", 1);
2372		parse_options_usage(NULL, stat_options, "table", 0);
2373		goto out;
2374	}
2375
2376	if (output_fd < 0) {
2377		fprintf(stderr, "argument to --log-fd must be a > 0\n");
2378		parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2379		goto out;
2380	}
2381
2382	if (!output && !quiet) {
2383		struct timespec tm;
2384		mode = append_file ? "a" : "w";
2385
2386		output = fopen(output_name, mode);
2387		if (!output) {
2388			perror("failed to create output file");
2389			return -1;
2390		}
2391		clock_gettime(CLOCK_REALTIME, &tm);
2392		fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2393	} else if (output_fd > 0) {
2394		mode = append_file ? "a" : "w";
2395		output = fdopen(output_fd, mode);
2396		if (!output) {
2397			perror("Failed opening logfd");
2398			return -errno;
2399		}
2400	}
2401
2402	if (stat_config.interval_clear && !isatty(fileno(output))) {
2403		fprintf(stderr, "--interval-clear does not work with output\n");
2404		parse_options_usage(stat_usage, stat_options, "o", 1);
2405		parse_options_usage(NULL, stat_options, "log-fd", 0);
2406		parse_options_usage(NULL, stat_options, "interval-clear", 0);
2407		return -1;
2408	}
2409
2410	stat_config.output = output;
2411
2412	/*
2413	 * let the spreadsheet do the pretty-printing
2414	 */
2415	if (stat_config.csv_output) {
2416		/* User explicitly passed -B? */
2417		if (big_num_opt == 1) {
2418			fprintf(stderr, "-B option not supported with -x\n");
2419			parse_options_usage(stat_usage, stat_options, "B", 1);
2420			parse_options_usage(NULL, stat_options, "x", 1);
2421			goto out;
2422		} else /* Nope, so disable big number formatting */
2423			stat_config.big_num = false;
2424	} else if (big_num_opt == 0) /* User passed --no-big-num */
2425		stat_config.big_num = false;
2426
2427	err = target__validate(&target);
2428	if (err) {
2429		target__strerror(&target, err, errbuf, BUFSIZ);
2430		pr_warning("%s\n", errbuf);
2431	}
2432
2433	setup_system_wide(argc);
2434
2435	/*
2436	 * Display user/system times only for single
2437	 * run and when there's specified tracee.
2438	 */
2439	if ((stat_config.run_count == 1) && target__none(&target))
2440		stat_config.ru_display = true;
2441
2442	if (stat_config.run_count < 0) {
2443		pr_err("Run count must be a positive number\n");
2444		parse_options_usage(stat_usage, stat_options, "r", 1);
2445		goto out;
2446	} else if (stat_config.run_count == 0) {
2447		forever = true;
2448		stat_config.run_count = 1;
2449	}
2450
2451	if (stat_config.walltime_run_table) {
2452		stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));
2453		if (!stat_config.walltime_run) {
2454			pr_err("failed to setup -r option");
2455			goto out;
2456		}
2457	}
2458
2459	if ((stat_config.aggr_mode == AGGR_THREAD) &&
2460		!target__has_task(&target)) {
2461		if (!target.system_wide || target.cpu_list) {
2462			fprintf(stderr, "The --per-thread option is only "
2463				"available when monitoring via -p -t -a "
2464				"options or only --per-thread.\n");
2465			parse_options_usage(NULL, stat_options, "p", 1);
2466			parse_options_usage(NULL, stat_options, "t", 1);
2467			goto out;
2468		}
2469	}
2470
2471	/*
2472	 * no_aggr, cgroup are for system-wide only
2473	 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2474	 */
2475	if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2476	      stat_config.aggr_mode != AGGR_THREAD) ||
2477	     (nr_cgroups || stat_config.cgroup_list)) &&
2478	    !target__has_cpu(&target)) {
2479		fprintf(stderr, "both cgroup and no-aggregation "
2480			"modes only available in system-wide mode\n");
2481
2482		parse_options_usage(stat_usage, stat_options, "G", 1);
2483		parse_options_usage(NULL, stat_options, "A", 1);
2484		parse_options_usage(NULL, stat_options, "a", 1);
2485		parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2486		goto out;
2487	}
2488
2489	if (stat_config.iostat_run) {
2490		status = iostat_prepare(evsel_list, &stat_config);
2491		if (status)
2492			goto out;
2493		if (iostat_mode == IOSTAT_LIST) {
2494			iostat_list(evsel_list, &stat_config);
2495			goto out;
2496		} else if (verbose > 0)
2497			iostat_list(evsel_list, &stat_config);
2498		if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))
2499			target.system_wide = true;
2500	}
2501
2502	if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2503		target.per_thread = true;
2504
2505	stat_config.system_wide = target.system_wide;
2506	if (target.cpu_list) {
2507		stat_config.user_requested_cpu_list = strdup(target.cpu_list);
2508		if (!stat_config.user_requested_cpu_list) {
2509			status = -ENOMEM;
2510			goto out;
2511		}
2512	}
2513
2514	/*
2515	 * Metric parsing needs to be delayed as metrics may optimize events
2516	 * knowing the target is system-wide.
2517	 */
2518	if (metrics) {
2519		metricgroup__parse_groups(evsel_list, metrics,
2520					stat_config.metric_no_group,
2521					stat_config.metric_no_merge,
2522					stat_config.user_requested_cpu_list,
2523					stat_config.system_wide,
2524					&stat_config.metric_events);
2525		zfree(&metrics);
2526	}
2527	perf_stat__collect_metric_expr(evsel_list);
2528	perf_stat__init_shadow_stats();
2529
2530	if (add_default_attributes())
2531		goto out;
2532
2533	if (stat_config.cgroup_list) {
2534		if (nr_cgroups > 0) {
2535			pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
2536			parse_options_usage(stat_usage, stat_options, "G", 1);
2537			parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2538			goto out;
2539		}
2540
2541		if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
2542					  &stat_config.metric_events, true) < 0) {
2543			parse_options_usage(stat_usage, stat_options,
2544					    "for-each-cgroup", 0);
2545			goto out;
2546		}
2547	}
2548
2549	if (evlist__fix_hybrid_cpus(evsel_list, target.cpu_list)) {
2550		pr_err("failed to use cpu list %s\n", target.cpu_list);
2551		goto out;
2552	}
2553
2554	target.hybrid = perf_pmu__has_hybrid();
2555	if (evlist__create_maps(evsel_list, &target) < 0) {
2556		if (target__has_task(&target)) {
2557			pr_err("Problems finding threads of monitor\n");
2558			parse_options_usage(stat_usage, stat_options, "p", 1);
2559			parse_options_usage(NULL, stat_options, "t", 1);
2560		} else if (target__has_cpu(&target)) {
2561			perror("failed to parse CPUs map");
2562			parse_options_usage(stat_usage, stat_options, "C", 1);
2563			parse_options_usage(NULL, stat_options, "a", 1);
2564		}
2565		goto out;
2566	}
2567
2568	evlist__check_cpu_maps(evsel_list);
2569
2570	/*
2571	 * Initialize thread_map with comm names,
2572	 * so we could print it out on output.
2573	 */
2574	if (stat_config.aggr_mode == AGGR_THREAD) {
2575		thread_map__read_comms(evsel_list->core.threads);
2576	}
2577
2578	if (stat_config.aggr_mode == AGGR_NODE)
2579		cpu__setup_cpunode_map();
2580
2581	if (stat_config.times && interval)
2582		interval_count = true;
2583	else if (stat_config.times && !interval) {
2584		pr_err("interval-count option should be used together with "
2585				"interval-print.\n");
2586		parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2587		parse_options_usage(stat_usage, stat_options, "I", 1);
2588		goto out;
2589	}
2590
2591	if (timeout && timeout < 100) {
2592		if (timeout < 10) {
2593			pr_err("timeout must be >= 10ms.\n");
2594			parse_options_usage(stat_usage, stat_options, "timeout", 0);
2595			goto out;
2596		} else
2597			pr_warning("timeout < 100ms. "
2598				   "The overhead percentage could be high in some cases. "
2599				   "Please proceed with caution.\n");
2600	}
2601	if (timeout && interval) {
2602		pr_err("timeout option is not supported with interval-print.\n");
2603		parse_options_usage(stat_usage, stat_options, "timeout", 0);
2604		parse_options_usage(stat_usage, stat_options, "I", 1);
2605		goto out;
2606	}
2607
2608	if (perf_stat_init_aggr_mode())
2609		goto out;
2610
2611	if (evlist__alloc_stats(&stat_config, evsel_list, interval))
2612		goto out;
2613
2614	/*
2615	 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
2616	 * while avoiding that older tools show confusing messages.
2617	 *
2618	 * However for pipe sessions we need to keep it zero,
2619	 * because script's perf_evsel__check_attr is triggered
2620	 * by attr->sample_type != 0, and we can't run it on
2621	 * stat sessions.
2622	 */
2623	stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);
2624
2625	/*
2626	 * We dont want to block the signals - that would cause
2627	 * child tasks to inherit that and Ctrl-C would not work.
2628	 * What we want is for Ctrl-C to work in the exec()-ed
2629	 * task, but being ignored by perf stat itself:
2630	 */
2631	atexit(sig_atexit);
2632	if (!forever)
2633		signal(SIGINT,  skip_signal);
2634	signal(SIGCHLD, skip_signal);
2635	signal(SIGALRM, skip_signal);
2636	signal(SIGABRT, skip_signal);
2637
2638	if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))
2639		goto out;
2640
2641	/* Enable ignoring missing threads when -p option is defined. */
2642	evlist__first(evsel_list)->ignore_missing_thread = target.pid;
2643	status = 0;
2644	for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {
2645		if (stat_config.run_count != 1 && verbose > 0)
2646			fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2647				run_idx + 1);
2648
2649		if (run_idx != 0)
2650			evlist__reset_prev_raw_counts(evsel_list);
2651
2652		status = run_perf_stat(argc, argv, run_idx);
2653		if (forever && status != -1 && !interval) {
2654			print_counters(NULL, argc, argv);
2655			perf_stat__reset_stats();
2656		}
2657	}
2658
2659	if (!forever && status != -1 && (!interval || stat_config.summary))
2660		print_counters(NULL, argc, argv);
2661
2662	evlist__finalize_ctlfd(evsel_list);
2663
2664	if (STAT_RECORD) {
2665		/*
2666		 * We synthesize the kernel mmap record just so that older tools
2667		 * don't emit warnings about not being able to resolve symbols
2668		 * due to /proc/sys/kernel/kptr_restrict settings and instead provide
2669		 * a saner message about no samples being in the perf.data file.
2670		 *
2671		 * This also serves to suppress a warning about f_header.data.size == 0
2672		 * in header.c at the moment 'perf stat record' gets introduced, which
2673		 * is not really needed once we start adding the stat specific PERF_RECORD_
2674		 * records, but the need to suppress the kptr_restrict messages in older
2675		 * tools remain  -acme
2676		 */
2677		int fd = perf_data__fd(&perf_stat.data);
2678
2679		err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2680							 process_synthesized_event,
2681							 &perf_stat.session->machines.host);
2682		if (err) {
2683			pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2684				   "older tools may produce warnings about this file\n.");
2685		}
2686
2687		if (!interval) {
2688			if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2689				pr_err("failed to write stat round event\n");
2690		}
2691
2692		if (!perf_stat.data.is_pipe) {
2693			perf_stat.session->header.data_size += perf_stat.bytes_written;
2694			perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2695		}
2696
2697		evlist__close(evsel_list);
2698		perf_session__delete(perf_stat.session);
2699	}
2700
2701	perf_stat__exit_aggr_mode();
2702	evlist__free_stats(evsel_list);
2703out:
2704	if (stat_config.iostat_run)
2705		iostat_release(evsel_list);
2706
2707	zfree(&stat_config.walltime_run);
2708	zfree(&stat_config.user_requested_cpu_list);
2709
2710	if (smi_cost && smi_reset)
2711		sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
2712
2713	evlist__delete(evsel_list);
2714
2715	metricgroup__rblist_exit(&stat_config.metric_events);
2716	evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
2717
2718	return status;
2719}