1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * builtin-report.c
   4 *
   5 * Builtin report command: Analyze the perf.data input file,
   6 * look up and read DSOs and symbol information and display
   7 * a histogram of results, along various sorting keys.
   8 */
   9#include "builtin.h"
  10
  11#include "util/config.h"
  12
  13#include "util/annotate.h"
  14#include "util/color.h"
  15#include "util/dso.h"
  16#include <linux/list.h>
 
  17#include <linux/rbtree.h>
  18#include <linux/err.h>
  19#include <linux/zalloc.h>
  20#include "util/map.h"
  21#include "util/symbol.h"
  22#include "util/map_symbol.h"
  23#include "util/mem-events.h"
  24#include "util/branch.h"
  25#include "util/callchain.h"
 
  26#include "util/values.h"
  27
  28#include "perf.h"
  29#include "util/debug.h"
  30#include "util/evlist.h"
  31#include "util/evsel.h"
  32#include "util/evswitch.h"
  33#include "util/header.h"
  34#include "util/session.h"
  35#include "util/srcline.h"
  36#include "util/tool.h"
  37
  38#include <subcmd/parse-options.h>
  39#include <subcmd/exec-cmd.h>
  40#include "util/parse-events.h"
  41
  42#include "util/thread.h"
  43#include "util/sort.h"
  44#include "util/hist.h"
  45#include "util/data.h"
  46#include "arch/common.h"
  47#include "util/time-utils.h"
  48#include "util/auxtrace.h"
  49#include "util/units.h"
  50#include "util/branch.h"
  51#include "util/util.h" // perf_tip()
  52#include "ui/ui.h"
  53#include "ui/progress.h"
  54
  55#include <dlfcn.h>
  56#include <errno.h>
  57#include <inttypes.h>
  58#include <regex.h>
  59#include <linux/ctype.h>
  60#include <signal.h>
  61#include <linux/bitmap.h>
  62#include <linux/string.h>
  63#include <linux/stringify.h>
  64#include <linux/time64.h>
  65#include <sys/types.h>
  66#include <sys/stat.h>
  67#include <unistd.h>
  68#include <linux/mman.h>
  69
  70struct report {
  71	struct perf_tool	tool;
  72	struct perf_session	*session;
  73	struct evswitch		evswitch;
  74	bool			use_tui, use_gtk, use_stdio;
  75	bool			show_full_info;
  76	bool			show_threads;
  77	bool			inverted_callchain;
  78	bool			mem_mode;
  79	bool			stats_mode;
  80	bool			tasks_mode;
  81	bool			mmaps_mode;
  82	bool			header;
  83	bool			header_only;
  84	bool			nonany_branch_mode;
  85	bool			group_set;
  86	int			max_stack;
  87	struct perf_read_values	show_threads_values;
  88	struct annotation_options annotation_opts;
  89	const char		*pretty_printing_style;
  90	const char		*cpu_list;
  91	const char		*symbol_filter_str;
  92	const char		*time_str;
  93	struct perf_time_interval *ptime_range;
  94	int			range_size;
  95	int			range_num;
  96	float			min_percent;
  97	u64			nr_entries;
  98	u64			queue_size;
  99	int			socket_filter;
 100	DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 101	struct branch_type_stat	brtype_stat;
 102	bool			symbol_ipc;
 103};
 104
 105static int report__config(const char *var, const char *value, void *cb)
 106{
 107	struct report *rep = cb;
 108
 109	if (!strcmp(var, "report.group")) {
 110		symbol_conf.event_group = perf_config_bool(var, value);
 111		return 0;
 112	}
 113	if (!strcmp(var, "report.percent-limit")) {
 114		double pcnt = strtof(value, NULL);
 115
 116		rep->min_percent = pcnt;
 117		callchain_param.min_percent = pcnt;
 118		return 0;
 119	}
 120	if (!strcmp(var, "report.children")) {
 121		symbol_conf.cumulate_callchain = perf_config_bool(var, value);
 122		return 0;
 123	}
 124	if (!strcmp(var, "report.queue-size"))
 125		return perf_config_u64(&rep->queue_size, var, value);
 126
 127	if (!strcmp(var, "report.sort_order")) {
 128		default_sort_order = strdup(value);
 129		return 0;
 130	}
 131
 132	return 0;
 133}
 
 
 
 
 134
 135static int hist_iter__report_callback(struct hist_entry_iter *iter,
 136				      struct addr_location *al, bool single,
 137				      void *arg)
 
 138{
 
 139	int err = 0;
 140	struct report *rep = arg;
 141	struct hist_entry *he = iter->he;
 142	struct evsel *evsel = iter->evsel;
 143	struct perf_sample *sample = iter->sample;
 144	struct mem_info *mi;
 145	struct branch_info *bi;
 146
 147	if (!ui__has_annotation() && !rep->symbol_ipc)
 148		return 0;
 149
 150	if (sort__mode == SORT_MODE__BRANCH) {
 151		bi = he->branch_info;
 152		err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 153		if (err)
 154			goto out;
 
 155
 156		err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 
 
 157
 158	} else if (rep->mem_mode) {
 159		mi = he->mem_info;
 160		err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel);
 161		if (err)
 162			goto out;
 163
 164		err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 165
 166	} else if (symbol_conf.cumulate_callchain) {
 167		if (single)
 168			err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 169	} else {
 170		err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
 171	}
 
 
 
 
 
 
 
 172
 173out:
 174	return err;
 175}
 176
 177static int hist_iter__branch_callback(struct hist_entry_iter *iter,
 178				      struct addr_location *al __maybe_unused,
 179				      bool single __maybe_unused,
 180				      void *arg)
 181{
 182	struct hist_entry *he = iter->he;
 183	struct report *rep = arg;
 184	struct branch_info *bi;
 185	struct perf_sample *sample = iter->sample;
 186	struct evsel *evsel = iter->evsel;
 187	int err;
 188
 189	if (!ui__has_annotation() && !rep->symbol_ipc)
 190		return 0;
 191
 192	bi = he->branch_info;
 193	err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
 194	if (err)
 195		goto out;
 196
 197	err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
 
 
 
 198
 199	branch_type_count(&rep->brtype_stat, &bi->flags,
 200			  bi->from.addr, bi->to.addr);
 201
 
 
 202out:
 203	return err;
 204}
 205
 206static void setup_forced_leader(struct report *report,
 207				struct evlist *evlist)
 208{
 209	if (report->group_set)
 210		perf_evlist__force_leader(evlist);
 211}
 212
 213static int process_feature_event(struct perf_session *session,
 214				 union perf_event *event)
 215{
 216	struct report *rep = container_of(session->tool, struct report, tool);
 217
 218	if (event->feat.feat_id < HEADER_LAST_FEATURE)
 219		return perf_event__process_feature(session, event);
 220
 221	if (event->feat.feat_id != HEADER_LAST_FEATURE) {
 222		pr_err("failed: wrong feature ID: %" PRI_lu64 "\n",
 223		       event->feat.feat_id);
 224		return -1;
 225	}
 226
 227	/*
 228	 * (feat_id = HEADER_LAST_FEATURE) is the end marker which
 229	 * means all features are received, now we can force the
 230	 * group if needed.
 231	 */
 232	setup_forced_leader(rep, session->evlist);
 233	return 0;
 234}
 235
 236static int process_sample_event(struct perf_tool *tool,
 237				union perf_event *event,
 238				struct perf_sample *sample,
 239				struct evsel *evsel,
 240				struct machine *machine)
 241{
 242	struct report *rep = container_of(tool, struct report, tool);
 243	struct addr_location al;
 244	struct hist_entry_iter iter = {
 245		.evsel 			= evsel,
 246		.sample 		= sample,
 247		.hide_unresolved 	= symbol_conf.hide_unresolved,
 248		.add_entry_cb 		= hist_iter__report_callback,
 249	};
 250	int ret = 0;
 251
 252	if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
 253					  sample->time)) {
 254		return 0;
 255	}
 256
 257	if (evswitch__discard(&rep->evswitch, evsel))
 258		return 0;
 259
 260	if (machine__resolve(machine, &al, sample) < 0) {
 261		pr_debug("problem processing %d event, skipping it.\n",
 262			 event->header.type);
 263		return -1;
 264	}
 265
 266	if (symbol_conf.hide_unresolved && al.sym == NULL)
 267		goto out_put;
 268
 269	if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
 270		goto out_put;
 271
 272	if (sort__mode == SORT_MODE__BRANCH) {
 273		/*
 274		 * A non-synthesized event might not have a branch stack if
 275		 * branch stacks have been synthesized (using itrace options).
 276		 */
 277		if (!sample->branch_stack)
 278			goto out_put;
 279
 280		iter.add_entry_cb = hist_iter__branch_callback;
 281		iter.ops = &hist_iter_branch;
 282	} else if (rep->mem_mode) {
 283		iter.ops = &hist_iter_mem;
 284	} else if (symbol_conf.cumulate_callchain) {
 285		iter.ops = &hist_iter_cumulative;
 286	} else {
 287		iter.ops = &hist_iter_normal;
 288	}
 289
 290	if (al.map != NULL)
 291		al.map->dso->hit = 1;
 292
 293	if (ui__has_annotation() || rep->symbol_ipc) {
 294		hist__account_cycles(sample->branch_stack, &al, sample,
 295				     rep->nonany_branch_mode);
 296	}
 297
 298	ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
 299	if (ret < 0)
 300		pr_debug("problem adding hist entry, skipping event\n");
 301out_put:
 302	addr_location__put(&al);
 303	return ret;
 304}
 305
 306static int process_read_event(struct perf_tool *tool,
 307			      union perf_event *event,
 308			      struct perf_sample *sample __maybe_unused,
 309			      struct evsel *evsel,
 310			      struct machine *machine __maybe_unused)
 311{
 312	struct report *rep = container_of(tool, struct report, tool);
 313
 314	if (rep->show_threads) {
 315		const char *name = perf_evsel__name(evsel);
 316		int err = perf_read_values_add_value(&rep->show_threads_values,
 317					   event->read.pid, event->read.tid,
 318					   evsel->idx,
 319					   name,
 320					   event->read.value);
 321
 322		if (err)
 323			return err;
 324	}
 325
 
 
 
 
 326	return 0;
 327}
 328
 329/* For pipe mode, sample_type is not currently set */
 330static int report__setup_sample_type(struct report *rep)
 331{
 332	struct perf_session *session = rep->session;
 333	u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
 334	bool is_pipe = perf_data__is_pipe(session->data);
 335
 336	if (session->itrace_synth_opts->callchain ||
 337	    (!is_pipe &&
 338	     perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
 339	     !session->itrace_synth_opts->set))
 340		sample_type |= PERF_SAMPLE_CALLCHAIN;
 341
 342	if (session->itrace_synth_opts->last_branch)
 343		sample_type |= PERF_SAMPLE_BRANCH_STACK;
 344
 345	if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 346		if (perf_hpp_list.parent) {
 347			ui__error("Selected --sort parent, but no "
 348				    "callchain data. Did you call "
 349				    "'perf record' without -g?\n");
 350			return -EINVAL;
 351		}
 352		if (symbol_conf.use_callchain &&
 353			!symbol_conf.show_branchflag_count) {
 354			ui__error("Selected -g or --branch-history.\n"
 355				  "But no callchain or branch data.\n"
 356				  "Did you call 'perf record' without -g or -b?\n");
 357			return -1;
 358		}
 359	} else if (!callchain_param.enabled &&
 360		   callchain_param.mode != CHAIN_NONE &&
 361		   !symbol_conf.use_callchain) {
 362			symbol_conf.use_callchain = true;
 363			if (callchain_register_param(&callchain_param) < 0) {
 364				ui__error("Can't register callchain params.\n");
 
 365				return -EINVAL;
 366			}
 367	}
 368
 369	if (symbol_conf.cumulate_callchain) {
 370		/* Silently ignore if callchain is missing */
 371		if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 372			symbol_conf.cumulate_callchain = false;
 373			perf_hpp__cancel_cumulate();
 374		}
 375	}
 376
 377	if (sort__mode == SORT_MODE__BRANCH) {
 378		if (!is_pipe &&
 379		    !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 380			ui__error("Selected -b but no branch data. "
 381				  "Did you call perf record without -b?\n");
 382			return -1;
 383		}
 384	}
 385
 386	if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
 387		if ((sample_type & PERF_SAMPLE_REGS_USER) &&
 388		    (sample_type & PERF_SAMPLE_STACK_USER)) {
 389			callchain_param.record_mode = CALLCHAIN_DWARF;
 390			dwarf_callchain_users = true;
 391		} else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
 392			callchain_param.record_mode = CALLCHAIN_LBR;
 393		else
 394			callchain_param.record_mode = CALLCHAIN_FP;
 395	}
 396
 397	/* ??? handle more cases than just ANY? */
 398	if (!(perf_evlist__combined_branch_type(session->evlist) &
 399				PERF_SAMPLE_BRANCH_ANY))
 400		rep->nonany_branch_mode = true;
 401
 402	return 0;
 403}
 404
 405static void sig_handler(int sig __maybe_unused)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 406{
 407	session_done = 1;
 408}
 409
 410static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
 411					      const char *evname, FILE *fp)
 412{
 413	size_t ret;
 414	char unit;
 415	unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
 416	u64 nr_events = hists->stats.total_period;
 417	struct evsel *evsel = hists_to_evsel(hists);
 418	char buf[512];
 419	size_t size = sizeof(buf);
 420	int socked_id = hists->socket_filter;
 421
 422	if (quiet)
 423		return 0;
 424
 425	if (symbol_conf.filter_relative) {
 426		nr_samples = hists->stats.nr_non_filtered_samples;
 427		nr_events = hists->stats.total_non_filtered_period;
 428	}
 429
 430	if (perf_evsel__is_group_event(evsel)) {
 431		struct evsel *pos;
 432
 433		perf_evsel__group_desc(evsel, buf, size);
 434		evname = buf;
 435
 436		for_each_group_member(pos, evsel) {
 437			const struct hists *pos_hists = evsel__hists(pos);
 438
 439			if (symbol_conf.filter_relative) {
 440				nr_samples += pos_hists->stats.nr_non_filtered_samples;
 441				nr_events += pos_hists->stats.total_non_filtered_period;
 442			} else {
 443				nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 444				nr_events += pos_hists->stats.total_period;
 445			}
 446		}
 447	}
 448
 449	nr_samples = convert_unit(nr_samples, &unit);
 450	ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
 451	if (evname != NULL) {
 452		ret += fprintf(fp, " of event%s '%s'",
 453			       evsel->core.nr_members > 1 ? "s" : "", evname);
 454	}
 455
 456	if (rep->time_str)
 457		ret += fprintf(fp, " (time slices: %s)", rep->time_str);
 458
 459	if (symbol_conf.show_ref_callgraph &&
 460	    strstr(evname, "call-graph=no")) {
 461		ret += fprintf(fp, ", show reference callgraph");
 462	}
 463
 464	if (rep->mem_mode) {
 465		ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
 466		ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
 467	} else
 468		ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 469
 470	if (socked_id > -1)
 471		ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
 472
 
 
 
 
 473	return ret + fprintf(fp, "\n#\n");
 474}
 475
 476static int perf_evlist__tty_browse_hists(struct evlist *evlist,
 477					 struct report *rep,
 478					 const char *help)
 479{
 480	struct evsel *pos;
 481
 482	if (!quiet) {
 483		fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
 484			evlist->stats.total_lost_samples);
 485	}
 
 
 486
 487	evlist__for_each_entry(evlist, pos) {
 488		struct hists *hists = evsel__hists(pos);
 489		const char *evname = perf_evsel__name(pos);
 490
 491		if (symbol_conf.event_group &&
 492		    !perf_evsel__is_group_leader(pos))
 493			continue;
 494
 495		hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
 496		hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
 497			       !(symbol_conf.use_callchain ||
 498			         symbol_conf.show_branchflag_count));
 499		fprintf(stdout, "\n\n");
 500	}
 501
 502	if (!quiet)
 
 503		fprintf(stdout, "#\n# (%s)\n#\n", help);
 504
 505	if (rep->show_threads) {
 506		bool style = !strcmp(rep->pretty_printing_style, "raw");
 507		perf_read_values_display(stdout, &rep->show_threads_values,
 508					 style);
 509		perf_read_values_destroy(&rep->show_threads_values);
 
 510	}
 511
 512	if (sort__mode == SORT_MODE__BRANCH)
 513		branch_type_stat_display(stdout, &rep->brtype_stat);
 514
 515	return 0;
 516}
 517
 518static void report__warn_kptr_restrict(const struct report *rep)
 519{
 520	struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
 521	struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 522
 523	if (perf_evlist__exclude_kernel(rep->session->evlist))
 524		return;
 
 
 
 
 
 525
 
 
 526	if (kernel_map == NULL ||
 527	    (kernel_map->dso->hit &&
 528	     (kernel_kmap->ref_reloc_sym == NULL ||
 529	      kernel_kmap->ref_reloc_sym->addr == 0))) {
 530		const char *desc =
 531		    "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
 532		    "can't be resolved.";
 533
 534		if (kernel_map && map__has_symbols(kernel_map)) {
 535			desc = "If some relocation was applied (e.g. "
 536			       "kexec) symbols may be misresolved.";
 537		}
 538
 539		ui__warning(
 540"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
 541"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
 542"Samples in kernel modules can't be resolved as well.\n\n",
 543		desc);
 
 
 
 544	}
 545}
 546
 547static int report__gtk_browse_hists(struct report *rep, const char *help)
 548{
 549	int (*hist_browser)(struct evlist *evlist, const char *help,
 550			    struct hist_browser_timer *timer, float min_pcnt);
 551
 552	hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
 553
 554	if (hist_browser == NULL) {
 555		ui__error("GTK browser not found!\n");
 556		return -1;
 557	}
 558
 559	return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
 560}
 561
 562static int report__browse_hists(struct report *rep)
 563{
 564	int ret;
 565	struct perf_session *session = rep->session;
 566	struct evlist *evlist = session->evlist;
 567	const char *help = perf_tip(system_path(TIPDIR));
 568
 569	if (help == NULL) {
 570		/* fallback for people who don't install perf ;-) */
 571		help = perf_tip(DOCDIR);
 572		if (help == NULL)
 573			help = "Cannot load tips.txt file, please install perf!";
 574	}
 575
 576	switch (use_browser) {
 577	case 1:
 578		ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
 579						    rep->min_percent,
 580						    &session->header.env,
 581						    true, &rep->annotation_opts);
 582		/*
 583		 * Usually "ret" is the last pressed key, and we only
 584		 * care if the key notifies us to switch data file.
 585		 */
 586		if (ret != K_SWITCH_INPUT_DATA)
 587			ret = 0;
 588		break;
 589	case 2:
 590		ret = report__gtk_browse_hists(rep, help);
 591		break;
 592	default:
 593		ret = perf_evlist__tty_browse_hists(evlist, rep, help);
 594		break;
 595	}
 596
 597	return ret;
 598}
 599
 600static int report__collapse_hists(struct report *rep)
 601{
 602	struct ui_progress prog;
 603	struct evsel *pos;
 604	int ret = 0;
 605
 606	ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 607
 608	evlist__for_each_entry(rep->session->evlist, pos) {
 609		struct hists *hists = evsel__hists(pos);
 610
 611		if (pos->idx == 0)
 612			hists->symbol_filter_str = rep->symbol_filter_str;
 
 613
 614		hists->socket_filter = rep->socket_filter;
 615
 616		ret = hists__collapse_resort(hists, &prog);
 617		if (ret < 0)
 618			break;
 619
 620		/* Non-group events are considered as leader */
 621		if (symbol_conf.event_group &&
 622		    !perf_evsel__is_group_leader(pos)) {
 623			struct hists *leader_hists = evsel__hists(pos->leader);
 624
 625			hists__match(leader_hists, hists);
 626			hists__link(leader_hists, hists);
 627		}
 628	}
 629
 630	ui_progress__finish();
 631	return ret;
 632}
 633
 634static int hists__resort_cb(struct hist_entry *he, void *arg)
 635{
 636	struct report *rep = arg;
 637	struct symbol *sym = he->ms.sym;
 638
 639	if (rep->symbol_ipc && sym && !sym->annotate2) {
 640		struct evsel *evsel = hists_to_evsel(he->hists);
 641
 642		symbol__annotate2(sym, he->ms.map, evsel,
 643				  &annotation__default_options, NULL);
 644	}
 645
 646	return 0;
 647}
 648
 649static void report__output_resort(struct report *rep)
 650{
 651	struct ui_progress prog;
 652	struct evsel *pos;
 653
 654	ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
 655
 656	evlist__for_each_entry(rep->session->evlist, pos) {
 657		perf_evsel__output_resort_cb(pos, &prog,
 658					     hists__resort_cb, rep);
 659	}
 660
 661	ui_progress__finish();
 662}
 663
 664static void stats_setup(struct report *rep)
 665{
 666	memset(&rep->tool, 0, sizeof(rep->tool));
 667	rep->tool.no_warn = true;
 668}
 669
 670static int stats_print(struct report *rep)
 671{
 672	struct perf_session *session = rep->session;
 673
 674	perf_session__fprintf_nr_events(session, stdout);
 675	return 0;
 676}
 677
 678static void tasks_setup(struct report *rep)
 679{
 680	memset(&rep->tool, 0, sizeof(rep->tool));
 681	rep->tool.ordered_events = true;
 682	if (rep->mmaps_mode) {
 683		rep->tool.mmap = perf_event__process_mmap;
 684		rep->tool.mmap2 = perf_event__process_mmap2;
 685	}
 686	rep->tool.comm = perf_event__process_comm;
 687	rep->tool.exit = perf_event__process_exit;
 688	rep->tool.fork = perf_event__process_fork;
 689	rep->tool.no_warn = true;
 690}
 691
 692struct task {
 693	struct thread		*thread;
 694	struct list_head	 list;
 695	struct list_head	 children;
 696};
 697
 698static struct task *tasks_list(struct task *task, struct machine *machine)
 699{
 700	struct thread *parent_thread, *thread = task->thread;
 701	struct task   *parent_task;
 702
 703	/* Already listed. */
 704	if (!list_empty(&task->list))
 705		return NULL;
 706
 707	/* Last one in the chain. */
 708	if (thread->ppid == -1)
 709		return task;
 710
 711	parent_thread = machine__find_thread(machine, -1, thread->ppid);
 712	if (!parent_thread)
 713		return ERR_PTR(-ENOENT);
 714
 715	parent_task = thread__priv(parent_thread);
 716	list_add_tail(&task->list, &parent_task->children);
 717	return tasks_list(parent_task, machine);
 718}
 719
 720static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
 721{
 722	size_t printed = 0;
 723	struct rb_node *nd;
 724
 725	for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
 726		struct map *map = rb_entry(nd, struct map, rb_node);
 727
 728		printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
 729				   indent, "", map->start, map->end,
 730				   map->prot & PROT_READ ? 'r' : '-',
 731				   map->prot & PROT_WRITE ? 'w' : '-',
 732				   map->prot & PROT_EXEC ? 'x' : '-',
 733				   map->flags & MAP_SHARED ? 's' : 'p',
 734				   map->pgoff,
 735				   map->ino, map->dso->name);
 736	}
 737
 738	return printed;
 739}
 740
 741static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
 742{
 743	return maps__fprintf_task(&mg->maps, indent, fp);
 744}
 745
 746static void task__print_level(struct task *task, FILE *fp, int level)
 747{
 748	struct thread *thread = task->thread;
 749	struct task *child;
 750	int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
 751				  thread->pid_, thread->tid, thread->ppid,
 752				  level, "");
 753
 754	fprintf(fp, "%s\n", thread__comm_str(thread));
 755
 756	map_groups__fprintf_task(thread->mg, comm_indent, fp);
 757
 758	if (!list_empty(&task->children)) {
 759		list_for_each_entry(child, &task->children, list)
 760			task__print_level(child, fp, level + 1);
 761	}
 762}
 763
 764static int tasks_print(struct report *rep, FILE *fp)
 
 
 765{
 766	struct perf_session *session = rep->session;
 767	struct machine      *machine = &session->machines.host;
 768	struct task *tasks, *task;
 769	unsigned int nr = 0, itask = 0, i;
 770	struct rb_node *nd;
 771	LIST_HEAD(list);
 772
 773	/*
 774	 * No locking needed while accessing machine->threads,
 775	 * because --tasks is single threaded command.
 776	 */
 777
 778	/* Count all the threads. */
 779	for (i = 0; i < THREADS__TABLE_SIZE; i++)
 780		nr += machine->threads[i].nr;
 781
 782	tasks = malloc(sizeof(*tasks) * nr);
 783	if (!tasks)
 784		return -ENOMEM;
 785
 786	for (i = 0; i < THREADS__TABLE_SIZE; i++) {
 787		struct threads *threads = &machine->threads[i];
 788
 789		for (nd = rb_first_cached(&threads->entries); nd;
 790		     nd = rb_next(nd)) {
 791			task = tasks + itask++;
 792
 793			task->thread = rb_entry(nd, struct thread, rb_node);
 794			INIT_LIST_HEAD(&task->children);
 795			INIT_LIST_HEAD(&task->list);
 796			thread__set_priv(task->thread, task);
 797		}
 798	}
 799
 800	/*
 801	 * Iterate every task down to the unprocessed parent
 802	 * and link all in task children list. Task with no
 803	 * parent is added into 'list'.
 804	 */
 805	for (itask = 0; itask < nr; itask++) {
 806		task = tasks + itask;
 807
 808		if (!list_empty(&task->list))
 809			continue;
 810
 811		task = tasks_list(task, machine);
 812		if (IS_ERR(task)) {
 813			pr_err("Error: failed to process tasks\n");
 814			free(tasks);
 815			return PTR_ERR(task);
 816		}
 817
 818		if (task)
 819			list_add_tail(&task->list, &list);
 820	}
 821
 822	fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
 823
 824	list_for_each_entry(task, &list, list)
 825		task__print_level(task, fp, 0);
 826
 827	free(tasks);
 828	return 0;
 829}
 830
 831static int __cmd_report(struct report *rep)
 832{
 833	int ret;
 834	struct perf_session *session = rep->session;
 835	struct evsel *pos;
 836	struct perf_data *data = session->data;
 837
 838	signal(SIGINT, sig_handler);
 839
 840	if (rep->cpu_list) {
 841		ret = perf_session__cpu_bitmap(session, rep->cpu_list,
 842					       rep->cpu_bitmap);
 843		if (ret) {
 844			ui__error("failed to set cpu bitmap\n");
 845			return ret;
 846		}
 847		session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
 848	}
 849
 850	if (rep->show_threads) {
 851		ret = perf_read_values_init(&rep->show_threads_values);
 852		if (ret)
 853			return ret;
 854	}
 855
 856	ret = report__setup_sample_type(rep);
 857	if (ret) {
 858		/* report__setup_sample_type() already showed error message */
 859		return ret;
 860	}
 861
 862	if (rep->stats_mode)
 863		stats_setup(rep);
 864
 865	if (rep->tasks_mode)
 866		tasks_setup(rep);
 867
 868	ret = perf_session__process_events(session);
 869	if (ret) {
 870		ui__error("failed to process sample\n");
 871		return ret;
 872	}
 873
 874	if (rep->stats_mode)
 875		return stats_print(rep);
 876
 877	if (rep->tasks_mode)
 878		return tasks_print(rep, stdout);
 879
 880	report__warn_kptr_restrict(rep);
 881
 882	evlist__for_each_entry(session->evlist, pos)
 883		rep->nr_entries += evsel__hists(pos)->nr_entries;
 884
 885	if (use_browser == 0) {
 886		if (verbose > 3)
 887			perf_session__fprintf(session, stdout);
 888
 889		if (verbose > 2)
 890			perf_session__fprintf_dsos(session, stdout);
 891
 892		if (dump_trace) {
 893			perf_session__fprintf_nr_events(session, stdout);
 894			perf_evlist__fprintf_nr_events(session->evlist, stdout);
 895			return 0;
 896		}
 897	}
 898
 899	ret = report__collapse_hists(rep);
 900	if (ret) {
 901		ui__error("failed to process hist entry\n");
 902		return ret;
 903	}
 904
 905	if (session_done())
 906		return 0;
 907
 908	/*
 909	 * recalculate number of entries after collapsing since it
 910	 * might be changed during the collapse phase.
 911	 */
 912	rep->nr_entries = 0;
 913	evlist__for_each_entry(session->evlist, pos)
 914		rep->nr_entries += evsel__hists(pos)->nr_entries;
 915
 916	if (rep->nr_entries == 0) {
 917		ui__error("The %s data has no samples!\n", data->path);
 918		return 0;
 919	}
 920
 921	report__output_resort(rep);
 
 922
 923	return report__browse_hists(rep);
 924}
 925
 926static int
 927report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 928{
 929	struct callchain_param *callchain = opt->value;
 930
 931	callchain->enabled = !unset;
 932	/*
 933	 * --no-call-graph
 934	 */
 935	if (unset) {
 936		symbol_conf.use_callchain = false;
 937		callchain->mode = CHAIN_NONE;
 938		return 0;
 939	}
 940
 941	return parse_callchain_report_opt(arg);
 942}
 943
 944static int
 945parse_time_quantum(const struct option *opt, const char *arg,
 946		   int unset __maybe_unused)
 947{
 948	unsigned long *time_q = opt->value;
 949	char *end;
 950
 951	*time_q = strtoul(arg, &end, 0);
 952	if (end == arg)
 953		goto parse_err;
 954	if (*time_q == 0) {
 955		pr_err("time quantum cannot be 0");
 956		return -1;
 957	}
 958	end = skip_spaces(end);
 959	if (*end == 0)
 960		return 0;
 961	if (!strcmp(end, "s")) {
 962		*time_q *= NSEC_PER_SEC;
 963		return 0;
 964	}
 965	if (!strcmp(end, "ms")) {
 966		*time_q *= NSEC_PER_MSEC;
 967		return 0;
 968	}
 969	if (!strcmp(end, "us")) {
 970		*time_q *= NSEC_PER_USEC;
 971		return 0;
 972	}
 973	if (!strcmp(end, "ns"))
 974		return 0;
 975parse_err:
 976	pr_err("Cannot parse time quantum `%s'\n", arg);
 977	return -1;
 978}
 979
 980int
 981report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
 982				const char *arg, int unset __maybe_unused)
 983{
 984	if (arg) {
 985		int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
 986		if (err) {
 987			char buf[BUFSIZ];
 988			regerror(err, &ignore_callees_regex, buf, sizeof(buf));
 989			pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
 990			return -1;
 991		}
 992		have_ignore_callees = 1;
 993	}
 994
 
 
 
 
 
 
 
 
 
 
 
 
 995	return 0;
 996}
 997
 998static int
 999parse_branch_mode(const struct option *opt,
1000		  const char *str __maybe_unused, int unset)
1001{
1002	int *branch_mode = opt->value;
1003
1004	*branch_mode = !unset;
1005	return 0;
1006}
1007
1008static int
1009parse_percent_limit(const struct option *opt, const char *str,
1010		    int unset __maybe_unused)
1011{
1012	struct report *rep = opt->value;
1013	double pcnt = strtof(str, NULL);
1014
1015	rep->min_percent = pcnt;
1016	callchain_param.min_percent = pcnt;
1017	return 0;
1018}
1019
1020int cmd_report(int argc, const char **argv)
1021{
1022	struct perf_session *session;
1023	struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
1024	struct stat st;
1025	bool has_br_stack = false;
1026	int branch_mode = -1;
1027	bool branch_call_mode = false;
1028#define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
1029	static const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
1030						    CALLCHAIN_REPORT_HELP
1031						    "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
1032	char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
1033	const char * const report_usage[] = {
1034		"perf report [<options>]",
1035		NULL
1036	};
1037	struct report report = {
1038		.tool = {
1039			.sample		 = process_sample_event,
1040			.mmap		 = perf_event__process_mmap,
1041			.mmap2		 = perf_event__process_mmap2,
1042			.comm		 = perf_event__process_comm,
1043			.namespaces	 = perf_event__process_namespaces,
1044			.exit		 = perf_event__process_exit,
1045			.fork		 = perf_event__process_fork,
1046			.lost		 = perf_event__process_lost,
1047			.read		 = process_read_event,
1048			.attr		 = perf_event__process_attr,
1049			.tracing_data	 = perf_event__process_tracing_data,
1050			.build_id	 = perf_event__process_build_id,
1051			.id_index	 = perf_event__process_id_index,
1052			.auxtrace_info	 = perf_event__process_auxtrace_info,
1053			.auxtrace	 = perf_event__process_auxtrace,
1054			.event_update	 = perf_event__process_event_update,
1055			.feature	 = process_feature_event,
1056			.ordered_events	 = true,
1057			.ordering_requires_timestamps = true,
1058		},
1059		.max_stack		 = PERF_MAX_STACK_DEPTH,
1060		.pretty_printing_style	 = "normal",
1061		.socket_filter		 = -1,
1062		.annotation_opts	 = annotation__default_options,
1063	};
1064	const struct option options[] = {
1065	OPT_STRING('i', "input", &input_name, "file",
1066		    "input file name"),
1067	OPT_INCR('v', "verbose", &verbose,
1068		    "be more verbose (show symbol address, etc)"),
1069	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
1070	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1071		    "dump raw trace in ASCII"),
1072	OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
1073	OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
1074	OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
1075	OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1076		   "file", "vmlinux pathname"),
1077	OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1078                    "don't load vmlinux even if found"),
1079	OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1080		   "file", "kallsyms pathname"),
1081	OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
1082	OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1083		    "load module symbols - WARNING: use only with -k and LIVE kernel"),
1084	OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1085		    "Show a column with the number of samples"),
1086	OPT_BOOLEAN('T', "threads", &report.show_threads,
1087		    "Show per-thread event counters"),
1088	OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
1089		   "pretty printing style key: normal raw"),
1090	OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
1091	OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
1092	OPT_BOOLEAN(0, "stdio", &report.use_stdio,
1093		    "Use the stdio interface"),
1094	OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
1095	OPT_BOOLEAN(0, "header-only", &report.header_only,
1096		    "Show only data header."),
1097	OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1098		   sort_help("sort by key(s):")),
1099	OPT_STRING('F', "fields", &field_order, "key[,keys...]",
1100		   sort_help("output field(s): overhead period sample ")),
1101	OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
1102		    "Show sample percentage for different cpu modes"),
1103	OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
1104		    "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
1105	OPT_STRING('p', "parent", &parent_pattern, "regex",
1106		   "regex filter to identify parent, see: '--sort parent'"),
1107	OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
1108		    "Only display entries with parent-match"),
1109	OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
1110			     "print_type,threshold[,print_limit],order,sort_key[,branch],value",
1111			     report_callchain_help, &report_parse_callchain_opt,
1112			     callchain_default_opt),
1113	OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
1114		    "Accumulate callchains of children and show total overhead as well"),
1115	OPT_INTEGER(0, "max-stack", &report.max_stack,
1116		    "Set the maximum stack depth when parsing the callchain, "
1117		    "anything beyond the specified depth will be ignored. "
1118		    "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
1119	OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
1120		    "alias for inverted call graph"),
1121	OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1122		   "ignore callees of these functions in call graphs",
1123		   report_parse_ignore_callees_opt),
1124	OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1125		   "only consider symbols in these dsos"),
1126	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1127		   "only consider symbols in these comms"),
1128	OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1129		   "only consider symbols in these pids"),
1130	OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1131		   "only consider symbols in these tids"),
1132	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1133		   "only consider these symbols"),
1134	OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
1135		   "only show symbols that (partially) match with this filter"),
1136	OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
1137		   "width[,width...]",
1138		   "don't try to adjust column width, use these fixed values"),
1139	OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1140		   "separator for columns, no spaces will be added between "
1141		   "columns '.' is reserved."),
1142	OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
1143		    "Only display entries resolved to a symbol"),
1144	OPT_CALLBACK(0, "symfs", NULL, "directory",
1145		     "Look for files with symbols relative to this directory",
1146		     symbol__config_symfs),
1147	OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
1148		   "list of cpus to profile"),
1149	OPT_BOOLEAN('I', "show-info", &report.show_full_info,
1150		    "Display extended information about perf.data file"),
1151	OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
1152		    "Interleave source code with assembly code (default)"),
1153	OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
1154		    "Display raw encoding of assembly instructions (default)"),
1155	OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
1156		   "Specify disassembler style (e.g. -M intel for intel syntax)"),
1157	OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1158		    "Show a column with the sum of periods"),
1159	OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
1160		    "Show event group information together"),
1161	OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
1162		    "use branch records for per branch histogram filling",
1163		    parse_branch_mode),
1164	OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
1165		    "add last branch records to call history"),
1166	OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
1167		   "objdump binary to use for disassembly and annotations"),
1168	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
1169		    "Disable symbol demangling"),
1170	OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
1171		    "Enable kernel symbol demangling"),
1172	OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
1173	OPT_INTEGER(0, "samples", &symbol_conf.res_sample,
1174		    "Number of samples to save per histogram entry for individual browsing"),
1175	OPT_CALLBACK(0, "percent-limit", &report, "percent",
1176		     "Don't show entries under that percent", parse_percent_limit),
1177	OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1178		     "how to display percentage of filtered entries", parse_filter_percentage),
1179	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
1180			    "Instruction Tracing options\n" ITRACE_HELP,
1181			    itrace_parse_synth_opts),
1182	OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
1183			"Show full source file name path for source lines"),
1184	OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
1185		    "Show callgraph from reference event"),
1186	OPT_INTEGER(0, "socket-filter", &report.socket_filter,
1187		    "only show processor socket that match with this filter"),
1188	OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
1189		    "Show raw trace event output (do not use print fmt or plugins)"),
1190	OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
1191		    "Show entries in a hierarchy"),
1192	OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
1193			     "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
1194			     stdio__config_color, "always"),
1195	OPT_STRING(0, "time", &report.time_str, "str",
1196		   "Time span of interest (start,stop)"),
1197	OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
1198		    "Show inline function"),
1199	OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
1200		     "Set percent type local/global-period/hits",
1201		     annotate_parse_percent_type),
1202	OPT_BOOLEAN(0, "ns", &symbol_conf.nanosecs, "Show times in nanosecs"),
1203	OPT_CALLBACK(0, "time-quantum", &symbol_conf.time_quantum, "time (ms|us|ns|s)",
1204		     "Set time quantum for time sort key (default 100ms)",
1205		     parse_time_quantum),
1206	OPTS_EVSWITCH(&report.evswitch),
1207	OPT_END()
1208	};
1209	struct perf_data data = {
1210		.mode  = PERF_DATA_MODE_READ,
1211	};
1212	int ret = hists__init();
1213	char sort_tmp[128];
1214
1215	if (ret < 0)
1216		return ret;
1217
1218	ret = perf_config(report__config, &report);
1219	if (ret)
1220		return ret;
1221
 
 
1222	argc = parse_options(argc, argv, options, report_usage, 0);
1223	if (argc) {
1224		/*
1225		 * Special case: if there's an argument left then assume that
1226		 * it's a symbol filter:
1227		 */
1228		if (argc > 1)
1229			usage_with_options(report_usage, options);
1230
1231		report.symbol_filter_str = argv[0];
1232	}
1233
1234	if (report.mmaps_mode)
1235		report.tasks_mode = true;
1236
1237	if (quiet)
1238		perf_quiet_option();
1239
1240	if (symbol_conf.vmlinux_name &&
1241	    access(symbol_conf.vmlinux_name, R_OK)) {
1242		pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
1243		return -EINVAL;
1244	}
1245	if (symbol_conf.kallsyms_name &&
1246	    access(symbol_conf.kallsyms_name, R_OK)) {
1247		pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
1248		return -EINVAL;
1249	}
1250
1251	if (report.inverted_callchain)
1252		callchain_param.order = ORDER_CALLER;
1253	if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
1254		callchain_param.order = ORDER_CALLER;
1255
1256	if (itrace_synth_opts.callchain &&
1257	    (int)itrace_synth_opts.callchain_sz > report.max_stack)
1258		report.max_stack = itrace_synth_opts.callchain_sz;
1259
1260	if (!input_name || !strlen(input_name)) {
1261		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
1262			input_name = "-";
1263		else
1264			input_name = "perf.data";
1265	}
1266
1267	data.path  = input_name;
1268	data.force = symbol_conf.force;
1269
1270repeat:
1271	session = perf_session__new(&data, false, &report.tool);
1272	if (IS_ERR(session))
1273		return PTR_ERR(session);
1274
1275	ret = evswitch__init(&report.evswitch, session->evlist, stderr);
1276	if (ret)
1277		return ret;
1278
1279	if (zstd_init(&(session->zstd_data), 0) < 0)
1280		pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
1281
1282	if (report.queue_size) {
1283		ordered_events__set_alloc_size(&session->ordered_events,
1284					       report.queue_size);
1285	}
1286
1287	session->itrace_synth_opts = &itrace_synth_opts;
1288
1289	report.session = session;
1290
1291	has_br_stack = perf_header__has_feat(&session->header,
1292					     HEADER_BRANCH_STACK);
1293	if (perf_evlist__combined_sample_type(session->evlist) & PERF_SAMPLE_STACK_USER)
1294		has_br_stack = false;
1295
1296	setup_forced_leader(&report, session->evlist);
1297
1298	if (itrace_synth_opts.last_branch)
1299		has_br_stack = true;
1300
1301	if (has_br_stack && branch_call_mode)
1302		symbol_conf.show_branchflag_count = true;
1303
1304	memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
1305
1306	/*
1307	 * Branch mode is a tristate:
1308	 * -1 means default, so decide based on the file having branch data.
1309	 * 0/1 means the user chose a mode.
1310	 */
1311	if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
1312	    !branch_call_mode) {
1313		sort__mode = SORT_MODE__BRANCH;
1314		symbol_conf.cumulate_callchain = false;
1315	}
1316	if (branch_call_mode) {
1317		callchain_param.key = CCKEY_ADDRESS;
1318		callchain_param.branch_callstack = 1;
1319		symbol_conf.use_callchain = true;
1320		callchain_register_param(&callchain_param);
1321		if (sort_order == NULL)
1322			sort_order = "srcline,symbol,dso";
1323	}
1324
1325	if (report.mem_mode) {
1326		if (sort__mode == SORT_MODE__BRANCH) {
1327			pr_err("branch and mem mode incompatible\n");
1328			goto error;
1329		}
1330		sort__mode = SORT_MODE__MEMORY;
1331		symbol_conf.cumulate_callchain = false;
1332	}
1333
1334	if (symbol_conf.report_hierarchy) {
1335		/* disable incompatible options */
1336		symbol_conf.cumulate_callchain = false;
1337
1338		if (field_order) {
1339			pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1340			parse_options_usage(report_usage, options, "F", 1);
1341			parse_options_usage(NULL, options, "hierarchy", 0);
1342			goto error;
1343		}
1344
1345		perf_hpp_list.need_collapse = true;
1346	}
1347
1348	if (report.use_stdio)
1349		use_browser = 0;
1350	else if (report.use_tui)
1351		use_browser = 1;
1352	else if (report.use_gtk)
1353		use_browser = 2;
1354
1355	/* Force tty output for header output and per-thread stat. */
1356	if (report.header || report.header_only || report.show_threads)
1357		use_browser = 0;
1358	if (report.header || report.header_only)
1359		report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
1360	if (report.show_full_info)
1361		report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
1362	if (report.stats_mode || report.tasks_mode)
1363		use_browser = 0;
1364	if (report.stats_mode && report.tasks_mode) {
1365		pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
1366		goto error;
1367	}
1368
1369	if (strcmp(input_name, "-") != 0)
1370		setup_browser(true);
1371	else
1372		use_browser = 0;
1373
1374	if (sort_order && strstr(sort_order, "ipc")) {
1375		parse_options_usage(report_usage, options, "s", 1);
1376		goto error;
1377	}
1378
1379	if (sort_order && strstr(sort_order, "symbol")) {
1380		if (sort__mode == SORT_MODE__BRANCH) {
1381			snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1382				 sort_order, "ipc_lbr");
1383			report.symbol_ipc = true;
1384		} else {
1385			snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
1386				 sort_order, "ipc_null");
1387		}
1388
1389		sort_order = sort_tmp;
1390	}
1391
1392	if (setup_sorting(session->evlist) < 0) {
1393		if (sort_order)
1394			parse_options_usage(report_usage, options, "s", 1);
1395		if (field_order)
1396			parse_options_usage(sort_order ? NULL : report_usage,
1397					    options, "F", 1);
1398		goto error;
1399	}
1400
1401	if ((report.header || report.header_only) && !quiet) {
1402		perf_session__fprintf_info(session, stdout,
1403					   report.show_full_info);
1404		if (report.header_only) {
1405			ret = 0;
1406			goto error;
1407		}
1408	} else if (use_browser == 0 && !quiet &&
1409		   !report.stats_mode && !report.tasks_mode) {
1410		fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
1411		      stdout);
1412	}
1413
1414	/*
1415	 * Only in the TUI browser we are doing integrated annotation,
1416	 * so don't allocate extra space that won't be used in the stdio
1417	 * implementation.
1418	 */
1419	if (ui__has_annotation() || report.symbol_ipc) {
1420		ret = symbol__annotation_init();
1421		if (ret < 0)
1422			goto error;
1423		/*
1424 		 * For searching by name on the "Browse map details".
1425 		 * providing it only in verbose mode not to bloat too
1426 		 * much struct symbol.
1427 		 */
1428		if (verbose > 0) {
1429			/*
1430			 * XXX: Need to provide a less kludgy way to ask for
1431			 * more space per symbol, the u32 is for the index on
1432			 * the ui browser.
1433			 * See symbol__browser_index.
1434			 */
1435			symbol_conf.priv_size += sizeof(u32);
1436			symbol_conf.sort_by_name = true;
1437		}
1438		annotation_config__init();
1439	}
1440
1441	if (symbol__init(&session->header.env) < 0)
1442		goto error;
1443
1444	if (report.time_str) {
1445		ret = perf_time__parse_for_ranges(report.time_str, session,
1446						  &report.ptime_range,
1447						  &report.range_size,
1448						  &report.range_num);
1449		if (ret < 0)
1450			goto error;
1451
1452		itrace_synth_opts__set_time_range(&itrace_synth_opts,
1453						  report.ptime_range,
1454						  report.range_num);
1455	}
1456
1457	if (session->tevent.pevent &&
1458	    tep_set_function_resolver(session->tevent.pevent,
1459				      machine__resolve_kernel_addr,
1460				      &session->machines.host) < 0) {
1461		pr_err("%s: failed to set libtraceevent function resolver\n",
1462		       __func__);
1463		return -1;
1464	}
1465
1466	sort__setup_elide(stdout);
 
 
 
 
1467
1468	ret = __cmd_report(&report);
1469	if (ret == K_SWITCH_INPUT_DATA) {
1470		perf_session__delete(session);
1471		goto repeat;
 
 
 
1472	} else
1473		ret = 0;
1474
1475error:
1476	if (report.ptime_range) {
1477		itrace_synth_opts__clear_time_range(&itrace_synth_opts);
1478		zfree(&report.ptime_range);
1479	}
1480	zstd_fini(&(session->zstd_data));
1481	perf_session__delete(session);
1482	return ret;
 
 
 
1483}