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}