summaryrefslogtreecommitdiff
path: root/tools/perf/builtin-report.c
blob: 2b86651615cd7d831e3bbe860c5171da6611a3a0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
// SPDX-License-Identifier: GPL-2.0
/*
 * builtin-report.c
 *
 * Builtin report command: Analyze the perf.data input file,
 * look up and read DSOs and symbol information and display
 * a histogram of results, along various sorting keys.
 */
#include "builtin.h"

#include "util/config.h"

#include "util/annotate.h"
#include "util/color.h"
#include "util/dso.h"
#include <linux/list.h>
#include <linux/rbtree.h>
#include <linux/err.h>
#include <linux/zalloc.h>
#include "util/map.h"
#include "util/symbol.h"
#include "util/map_symbol.h"
#include "util/mem-events.h"
#include "util/branch.h"
#include "util/callchain.h"
#include "util/values.h"

#include "perf.h"
#include "util/debug.h"
#include "util/evlist.h"
#include "util/evsel.h"
#include "util/evswitch.h"
#include "util/header.h"
#include "util/session.h"
#include "util/srcline.h"
#include "util/tool.h"

#include <subcmd/parse-options.h>
#include <subcmd/exec-cmd.h>
#include "util/parse-events.h"

#include "util/thread.h"
#include "util/sort.h"
#include "util/hist.h"
#include "util/data.h"
#include "arch/common.h"
#include "util/time-utils.h"
#include "util/auxtrace.h"
#include "util/units.h"
#include "util/util.h" // perf_tip()
#include "ui/ui.h"
#include "ui/progress.h"
#include "util/block-info.h"

#include <dlfcn.h>
#include <errno.h>
#include <inttypes.h>
#include <regex.h>
#include <linux/ctype.h>
#include <signal.h>
#include <linux/bitmap.h>
#include <linux/string.h>
#include <linux/stringify.h>
#include <linux/time64.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <linux/mman.h>

#ifdef HAVE_LIBTRACEEVENT
#include <traceevent/event-parse.h>
#endif

struct report {
	struct perf_tool	tool;
	struct perf_session	*session;
	struct evswitch		evswitch;
#ifdef HAVE_SLANG_SUPPORT
	bool			use_tui;
#endif
#ifdef HAVE_GTK2_SUPPORT
	bool			use_gtk;
#endif
	bool			use_stdio;
	bool			show_full_info;
	bool			show_threads;
	bool			inverted_callchain;
	bool			mem_mode;
	bool			stats_mode;
	bool			tasks_mode;
	bool			mmaps_mode;
	bool			header;
	bool			header_only;
	bool			nonany_branch_mode;
	bool			group_set;
	bool			stitch_lbr;
	bool			disable_order;
	bool			skip_empty;
	int			max_stack;
	struct perf_read_values	show_threads_values;
	const char		*pretty_printing_style;
	const char		*cpu_list;
	const char		*symbol_filter_str;
	const char		*time_str;
	struct perf_time_interval *ptime_range;
	int			range_size;
	int			range_num;
	float			min_percent;
	u64			nr_entries;
	u64			queue_size;
	u64			total_cycles;
	int			socket_filter;
	DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
	struct branch_type_stat	brtype_stat;
	bool			symbol_ipc;
	bool			total_cycles_mode;
	struct block_report	*block_reports;
	int			nr_block_reports;
};

static int report__config(const char *var, const char *value, void *cb)
{
	struct report *rep = cb;

	if (!strcmp(var, "report.group")) {
		symbol_conf.event_group = perf_config_bool(var, value);
		return 0;
	}
	if (!strcmp(var, "report.percent-limit")) {
		double pcnt = strtof(value, NULL);

		rep->min_percent = pcnt;
		callchain_param.min_percent = pcnt;
		return 0;
	}
	if (!strcmp(var, "report.children")) {
		symbol_conf.cumulate_callchain = perf_config_bool(var, value);
		return 0;
	}
	if (!strcmp(var, "report.queue-size"))
		return perf_config_u64(&rep->queue_size, var, value);

	if (!strcmp(var, "report.sort_order")) {
		default_sort_order = strdup(value);
		if (!default_sort_order) {
			pr_err("Not enough memory for report.sort_order\n");
			return -1;
		}
		return 0;
	}

	if (!strcmp(var, "report.skip-empty")) {
		rep->skip_empty = perf_config_bool(var, value);
		return 0;
	}

	pr_debug("%s variable unknown, ignoring...", var);
	return 0;
}

static int hist_iter__report_callback(struct hist_entry_iter *iter,
				      struct addr_location *al, bool single,
				      void *arg)
{
	int err = 0;
	struct report *rep = arg;
	struct hist_entry *he = iter->he;
	struct evsel *evsel = iter->evsel;
	struct perf_sample *sample = iter->sample;
	struct mem_info *mi;
	struct branch_info *bi;

	if (!ui__has_annotation() && !rep->symbol_ipc)
		return 0;

	if (sort__mode == SORT_MODE__BRANCH) {
		bi = he->branch_info;
		err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
		if (err)
			goto out;

		err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);

	} else if (rep->mem_mode) {
		mi = he->mem_info;
		err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel);
		if (err)
			goto out;

		err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);

	} else if (symbol_conf.cumulate_callchain) {
		if (single)
			err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
	} else {
		err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
	}

out:
	return err;
}

static int hist_iter__branch_callback(struct hist_entry_iter *iter,
				      struct addr_location *al __maybe_unused,
				      bool single __maybe_unused,
				      void *arg)
{
	struct hist_entry *he = iter->he;
	struct report *rep = arg;
	struct branch_info *bi = he->branch_info;
	struct perf_sample *sample = iter->sample;
	struct evsel *evsel = iter->evsel;
	int err;

	branch_type_count(&rep->brtype_stat, &bi->flags,
			  bi->from.addr, bi->to.addr);

	if (!ui__has_annotation() && !rep->symbol_ipc)
		return 0;

	err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
	if (err)
		goto out;

	err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);

out:
	return err;
}

static void setup_forced_leader(struct report *report,
				struct evlist *evlist)
{
	if (report->group_set)
		evlist__force_leader(evlist);
}

static int process_feature_event(struct perf_session *session,
				 union perf_event *event)
{
	struct report *rep = container_of(session->tool, struct report, tool);

	if (event->feat.feat_id < HEADER_LAST_FEATURE)
		return perf_event__process_feature(session, event);

	if (event->feat.feat_id != HEADER_LAST_FEATURE) {
		pr_err("failed: wrong feature ID: %" PRI_lu64 "\n",
		       event->feat.feat_id);
		return -1;
	} else if (rep->header_only) {
		session_done = 1;
	}

	/*
	 * (feat_id = HEADER_LAST_FEATURE) is the end marker which
	 * means all features are received, now we can force the
	 * group if needed.
	 */
	setup_forced_leader(rep, session->evlist);
	return 0;
}

static int process_sample_event(struct perf_tool *tool,
				union perf_event *event,
				struct perf_sample *sample,
				struct evsel *evsel,
				struct machine *machine)
{
	struct report *rep = container_of(tool, struct report, tool);
	struct addr_location al;
	struct hist_entry_iter iter = {
		.evsel 			= evsel,
		.sample 		= sample,
		.hide_unresolved 	= symbol_conf.hide_unresolved,
		.add_entry_cb 		= hist_iter__report_callback,
	};
	int ret = 0;

	if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
					  sample->time)) {
		return 0;
	}

	if (evswitch__discard(&rep->evswitch, evsel))
		return 0;

	addr_location__init(&al);
	if (machine__resolve(machine, &al, sample) < 0) {
		pr_debug("problem processing %d event, skipping it.\n",
			 event->header.type);
		ret = -1;
		goto out_put;
	}

	if (rep->stitch_lbr)
		thread__set_lbr_stitch_enable(al.thread, true);

	if (symbol_conf.hide_unresolved && al.sym == NULL)
		goto out_put;

	if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
		goto out_put;

	if (sort__mode == SORT_MODE__BRANCH) {
		/*
		 * A non-synthesized event might not have a branch stack if
		 * branch stacks have been synthesized (using itrace options).
		 */
		if (!sample->branch_stack)
			goto out_put;

		iter.add_entry_cb = hist_iter__branch_callback;
		iter.ops = &hist_iter_branch;
	} else if (rep->mem_mode) {
		iter.ops = &hist_iter_mem;
	} else if (symbol_conf.cumulate_callchain) {
		iter.ops = &hist_iter_cumulative;
	} else {
		iter.ops = &hist_iter_normal;
	}

	if (al.map != NULL)
		map__dso(al.map)->hit = 1;

	if (ui__has_annotation() || rep->symbol_ipc || rep->total_cycles_mode) {
		hist__account_cycles(sample->branch_stack, &al, sample,
				     rep->nonany_branch_mode,
				     &rep->total_cycles);
	}

	ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
	if (ret < 0)
		pr_debug("problem adding hist entry, skipping event\n");
out_put:
	addr_location__exit(&al);
	return ret;
}

static int process_read_event(struct perf_tool *tool,
			      union perf_event *event,
			      struct perf_sample *sample __maybe_unused,
			      struct evsel *evsel,
			      struct machine *machine __maybe_unused)
{
	struct report *rep = container_of(tool, struct report, tool);

	if (rep->show_threads) {
		const char *name = evsel__name(evsel);
		int err = perf_read_values_add_value(&rep->show_threads_values,
					   event->read.pid, event->read.tid,
					   evsel->core.idx,
					   name,
					   event->read.value);

		if (err)
			return err;
	}

	return 0;
}

/* For pipe mode, sample_type is not currently set */
static int report__setup_sample_type(struct report *rep)
{
	struct perf_session *session = rep->session;
	u64 sample_type = evlist__combined_sample_type(session->evlist);
	bool is_pipe = perf_data__is_pipe(session->data);
	struct evsel *evsel;

	if (session->itrace_synth_opts->callchain ||
	    session->itrace_synth_opts->add_callchain ||
	    (!is_pipe &&
	     perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
	     !session->itrace_synth_opts->set))
		sample_type |= PERF_SAMPLE_CALLCHAIN;

	if (session->itrace_synth_opts->last_branch ||
	    session->itrace_synth_opts->add_last_branch)
		sample_type |= PERF_SAMPLE_BRANCH_STACK;

	if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
		if (perf_hpp_list.parent) {
			ui__error("Selected --sort parent, but no "
				    "callchain data. Did you call "
				    "'perf record' without -g?\n");
			return -EINVAL;
		}
		if (symbol_conf.use_callchain &&
			!symbol_conf.show_branchflag_count) {
			ui__error("Selected -g or --branch-history.\n"
				  "But no callchain or branch data.\n"
				  "Did you call 'perf record' without -g or -b?\n");
			return -1;
		}
	} else if (!callchain_param.enabled &&
		   callchain_param.mode != CHAIN_NONE &&
		   !symbol_conf.use_callchain) {
			symbol_conf.use_callchain = true;
			if (callchain_register_param(&callchain_param) < 0) {
				ui__error("Can't register callchain params.\n");
				return -EINVAL;
			}
	}

	if (symbol_conf.cumulate_callchain) {
		/* Silently ignore if callchain is missing */
		if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
			symbol_conf.cumulate_callchain = false;
			perf_hpp__cancel_cumulate();
		}
	}

	if (sort__mode == SORT_MODE__BRANCH) {
		if (!is_pipe &&
		    !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
			ui__error("Selected -b but no branch data. "
				  "Did you call perf record without -b?\n");
			return -1;
		}
	}

	if (sort__mode == SORT_MODE__MEMORY) {
		/*
		 * FIXUP: prior to kernel 5.18, Arm SPE missed to set
		 * PERF_SAMPLE_DATA_SRC bit in sample type.  For backward
		 * compatibility, set the bit if it's an old perf data file.
		 */
		evlist__for_each_entry(session->evlist, evsel) {
			if (strstr(evsel->name, "arm_spe") &&
				!(sample_type & PERF_SAMPLE_DATA_SRC)) {
				evsel->core.attr.sample_type |= PERF_SAMPLE_DATA_SRC;
				sample_type |= PERF_SAMPLE_DATA_SRC;
			}
		}

		if (!is_pipe && !(sample_type & PERF_SAMPLE_DATA_SRC)) {
			ui__error("Selected --mem-mode but no mem data. "
				  "Did you call perf record without -d?\n");
			return -1;
		}
	}

	callchain_param_setup(sample_type, perf_env__arch(&rep->session->header.env));

	if (rep->stitch_lbr && (callchain_param.record_mode != CALLCHAIN_LBR)) {
		ui__warning("Can't find LBR callchain. Switch off --stitch-lbr.\n"
			    "Please apply --call-graph lbr when recording.\n");
		rep->stitch_lbr = false;
	}

	/* ??? handle more cases than just ANY? */
	if (!(evlist__combined_branch_type(session->evlist) & PERF_SAMPLE_BRANCH_ANY))
		rep->nonany_branch_mode = true;

#if !defined(HAVE_LIBUNWIND_SUPPORT) && !defined(HAVE_DWARF_SUPPORT)
	if (dwarf_callchain_users) {
		ui__warning("Please install libunwind or libdw "
			    "development packages during the perf build.\n");
	}
#endif

	return 0;
}

static void sig_handler(int sig __maybe_unused)
{
	session_done = 1;
}

static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
					      const char *evname, FILE *fp)
{
	size_t ret;
	char unit;
	unsigned long nr_samples = hists->stats.nr_samples;
	u64 nr_events = hists->stats.total_period;
	struct evsel *evsel = hists_to_evsel(hists);
	char buf[512];
	size_t size = sizeof(buf);
	int socked_id = hists->socket_filter;

	if (quiet)
		return 0;

	if (symbol_conf.filter_relative) {
		nr_samples = hists->stats.nr_non_filtered_samples;
		nr_events = hists->stats.total_non_filtered_period;
	}

	if (evsel__is_group_event(evsel)) {
		struct evsel *pos;

		evsel__group_desc(evsel, buf, size);
		evname = buf;

		for_each_group_member(pos, evsel) {
			const struct hists *pos_hists = evsel__hists(pos);

			if (symbol_conf.filter_relative) {
				nr_samples += pos_hists->stats.nr_non_filtered_samples;
				nr_events += pos_hists->stats.total_non_filtered_period;
			} else {
				nr_samples += pos_hists->stats.nr_samples;
				nr_events += pos_hists->stats.total_period;
			}
		}
	}

	nr_samples = convert_unit(nr_samples, &unit);
	ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
	if (evname != NULL) {
		ret += fprintf(fp, " of event%s '%s'",
			       evsel->core.nr_members > 1 ? "s" : "", evname);
	}

	if (rep->time_str)
		ret += fprintf(fp, " (time slices: %s)", rep->time_str);

	if (symbol_conf.show_ref_callgraph && evname && strstr(evname, "call-graph=no")) {
		ret += fprintf(fp, ", show reference callgraph");
	}

	if (rep->mem_mode) {
		ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
		ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
	} else
		ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);

	if (socked_id > -1)
		ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);

	return ret + fprintf(fp, "\n#\n");
}

static int evlist__tui_block_hists_browse(struct evlist *evlist, struct report *rep)
{
	struct evsel *pos;
	int i = 0, ret;

	evlist__for_each_entry(evlist, pos) {
		ret = report__browse_block_hists(&rep->block_reports[i++].hist,
						 rep->min_percent, pos,
						 &rep->session->header.env,
						 &annotate_opts);
		if (ret != 0)
			return ret;
	}

	return 0;
}

static int evlist__tty_browse_hists(struct evlist *evlist, struct report *rep, const char *help)
{
	struct evsel *pos;
	int i = 0;

	if (!quiet) {
		fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
			evlist->stats.total_lost_samples);
	}

	evlist__for_each_entry(evlist, pos) {
		struct hists *hists = evsel__hists(pos);
		const char *evname = evsel__name(pos);

		if (symbol_conf.event_group && !evsel__is_group_leader(pos))
			continue;

		if (rep->skip_empty && !hists->stats.nr_samples)
			continue;

		hists__fprintf_nr_sample_events(hists, rep, evname, stdout);

		if (rep->total_cycles_mode) {
			report__browse_block_hists(&rep->block_reports[i++].hist,
						   rep->min_percent, pos,
						   NULL, NULL);
			continue;
		}

		hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
			       !(symbol_conf.use_callchain ||
			         symbol_conf.show_branchflag_count));
		fprintf(stdout, "\n\n");
	}

	if (!quiet)
		fprintf(stdout, "#\n# (%s)\n#\n", help);

	if (rep->show_threads) {
		bool style = !strcmp(rep->pretty_printing_style, "raw");
		perf_read_values_display(stdout, &rep->show_threads_values,
					 style);
		perf_read_values_destroy(&rep->show_threads_values);
	}

	if (sort__mode == SORT_MODE__BRANCH)
		branch_type_stat_display(stdout, &rep->brtype_stat);

	return 0;
}

static void report__warn_kptr_restrict(const struct report *rep)
{
	struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
	struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;

	if (evlist__exclude_kernel(rep->session->evlist))
		return;

	if (kernel_map == NULL ||
	     (map__dso(kernel_map)->hit &&
	     (kernel_kmap->ref_reloc_sym == NULL ||
	      kernel_kmap->ref_reloc_sym->addr == 0))) {
		const char *desc =
		    "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
		    "can't be resolved.";

		if (kernel_map && map__has_symbols(kernel_map)) {
			desc = "If some relocation was applied (e.g. "
			       "kexec) symbols may be misresolved.";
		}

		ui__warning(
"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
"Samples in kernel modules can't be resolved as well.\n\n",
		desc);
	}
}

static int report__gtk_browse_hists(struct report *rep, const char *help)
{
	int (*hist_browser)(struct evlist *evlist, const char *help,
			    struct hist_browser_timer *timer, float min_pcnt);

	hist_browser = dlsym(perf_gtk_handle, "evlist__gtk_browse_hists");

	if (hist_browser == NULL) {
		ui__error("GTK browser not found!\n");
		return -1;
	}

	return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
}

static int report__browse_hists(struct report *rep)
{
	int ret;
	struct perf_session *session = rep->session;
	struct evlist *evlist = session->evlist;
	char *help = NULL, *path = NULL;

	path = system_path(TIPDIR);
	if (perf_tip(&help, path) || help == NULL) {
		/* fallback for people who don't install perf ;-) */
		free(path);
		path = system_path(DOCDIR);
		if (perf_tip(&help, path) || help == NULL)
			help = strdup("Cannot load tips.txt file, please install perf!");
	}
	free(path);

	switch (use_browser) {
	case 1:
		if (rep->total_cycles_mode) {
			ret = evlist__tui_block_hists_browse(evlist, rep);
			break;
		}

		ret = evlist__tui_browse_hists(evlist, help, NULL, rep->min_percent,
					       &session->header.env, true, &annotate_opts);
		/*
		 * Usually "ret" is the last pressed key, and we only
		 * care if the key notifies us to switch data file.
		 */
		if (ret != K_SWITCH_INPUT_DATA && ret != K_RELOAD)
			ret = 0;
		break;
	case 2:
		ret = report__gtk_browse_hists(rep, help);
		break;
	default:
		ret = evlist__tty_browse_hists(evlist, rep, help);
		break;
	}
	free(help);
	return ret;
}

static int report__collapse_hists(struct report *rep)
{
	struct perf_session *session = rep->session;
	struct evlist *evlist = session->evlist;
	struct ui_progress prog;
	struct evsel *pos;
	int ret = 0;

	/*
	 * The pipe data needs to setup hierarchy hpp formats now, because it
	 * cannot know about evsels in the data before reading the data.  The
	 * normal file data saves the event (attribute) info in the header
	 * section, but pipe does not have the luxury.
	 */
	if (perf_data__is_pipe(session->data)) {
		if (perf_hpp__setup_hists_formats(&perf_hpp_list, evlist) < 0) {
			ui__error("Failed to setup hierarchy output formats\n");
			return -1;
		}
	}

	ui_progress__init(&prog, rep->nr_entries, "Merging related events...");

	evlist__for_each_entry(rep->session->evlist, pos) {
		struct hists *hists = evsel__hists(pos);

		if (pos->core.idx == 0)
			hists->symbol_filter_str = rep->symbol_filter_str;

		hists->socket_filter = rep->socket_filter;

		ret = hists__collapse_resort(hists, &prog);
		if (ret < 0)
			break;

		/* Non-group events are considered as leader */
		if (symbol_conf.event_group && !evsel__is_group_leader(pos)) {
			struct hists *leader_hists = evsel__hists(evsel__leader(pos));

			hists__match(leader_hists, hists);
			hists__link(leader_hists, hists);
		}
	}

	ui_progress__finish();
	return ret;
}

static int hists__resort_cb(struct hist_entry *he, void *arg)
{
	struct report *rep = arg;
	struct symbol *sym = he->ms.sym;

	if (rep->symbol_ipc && sym && !sym->annotate2) {
		struct evsel *evsel = hists_to_evsel(he->hists);

		symbol__annotate2(&he->ms, evsel, NULL);
	}

	return 0;
}

static void report__output_resort(struct report *rep)
{
	struct ui_progress prog;
	struct evsel *pos;

	ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");

	evlist__for_each_entry(rep->session->evlist, pos) {
		evsel__output_resort_cb(pos, &prog, hists__resort_cb, rep);
	}

	ui_progress__finish();
}

static int count_sample_event(struct perf_tool *tool __maybe_unused,
			      union perf_event *event __maybe_unused,
			      struct perf_sample *sample __maybe_unused,
			      struct evsel *evsel,
			      struct machine *machine __maybe_unused)
{
	struct hists *hists = evsel__hists(evsel);

	hists__inc_nr_events(hists);
	return 0;
}

static int count_lost_samples_event(struct perf_tool *tool,
				    union perf_event *event,
				    struct perf_sample *sample,
				    struct machine *machine __maybe_unused)
{
	struct report *rep = container_of(tool, struct report, tool);
	struct evsel *evsel;

	evsel = evlist__id2evsel(rep->session->evlist, sample->id);
	if (evsel) {
		hists__inc_nr_lost_samples(evsel__hists(evsel),
					   event->lost_samples.lost);
	}
	return 0;
}

static int process_attr(struct perf_tool *tool __maybe_unused,
			union perf_event *event,
			struct evlist **pevlist);

static void stats_setup(struct report *rep)
{
	memset(&rep->tool, 0, sizeof(rep->tool));
	rep->tool.attr = process_attr;
	rep->tool.sample = count_sample_event;
	rep->tool.lost_samples = count_lost_samples_event;
	rep->tool.no_warn = true;
}

static int stats_print(struct report *rep)
{
	struct perf_session *session = rep->session;

	perf_session__fprintf_nr_events(session, stdout, rep->skip_empty);
	evlist__fprintf_nr_events(session->evlist, stdout, rep->skip_empty);
	return 0;
}

static void tasks_setup(struct report *rep)
{
	memset(&rep->tool, 0, sizeof(rep->tool));
	rep->tool.ordered_events = true;
	if (rep->mmaps_mode) {
		rep->tool.mmap = perf_event__process_mmap;
		rep->tool.mmap2 = perf_event__process_mmap2;
	}
	rep->tool.attr = process_attr;
	rep->tool.comm = perf_event__process_comm;
	rep->tool.exit = perf_event__process_exit;
	rep->tool.fork = perf_event__process_fork;
	rep->tool.no_warn = true;
}

struct task {
	struct thread		*thread;
	struct list_head	 list;
	struct list_head	 children;
};

static struct task *tasks_list(struct task *task, struct machine *machine)
{
	struct thread *parent_thread, *thread = task->thread;
	struct task   *parent_task;

	/* Already listed. */
	if (!list_empty(&task->list))
		return NULL;

	/* Last one in the chain. */
	if (thread__ppid(thread) == -1)
		return task;

	parent_thread = machine__find_thread(machine, -1, thread__ppid(thread));
	if (!parent_thread)
		return ERR_PTR(-ENOENT);

	parent_task = thread__priv(parent_thread);
	thread__put(parent_thread);
	list_add_tail(&task->list, &parent_task->children);
	return tasks_list(parent_task, machine);
}

static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
{
	size_t printed = 0;
	struct map_rb_node *rb_node;

	maps__for_each_entry(maps, rb_node) {
		struct map *map = rb_node->map;
		const struct dso *dso = map__dso(map);
		u32 prot = map__prot(map);

		printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
				   indent, "", map__start(map), map__end(map),
				   prot & PROT_READ ? 'r' : '-',
				   prot & PROT_WRITE ? 'w' : '-',
				   prot & PROT_EXEC ? 'x' : '-',
				   map__flags(map) ? 's' : 'p',
				   map__pgoff(map),
				   dso->id.ino, dso->name);
	}

	return printed;
}

static void task__print_level(struct task *task, FILE *fp, int level)
{
	struct thread *thread = task->thread;
	struct task *child;
	int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
				  thread__pid(thread), thread__tid(thread),
				  thread__ppid(thread), level, "");

	fprintf(fp, "%s\n", thread__comm_str(thread));

	maps__fprintf_task(thread__maps(thread), comm_indent, fp);

	if (!list_empty(&task->children)) {
		list_for_each_entry(child, &task->children, list)
			task__print_level(child, fp, level + 1);
	}
}

static int tasks_print(struct report *rep, FILE *fp)
{
	struct perf_session *session = rep->session;
	struct machine      *machine = &session->machines.host;
	struct task *tasks, *task;
	unsigned int nr = 0, itask = 0, i;
	struct rb_node *nd;
	LIST_HEAD(list);

	/*
	 * No locking needed while accessing machine->threads,
	 * because --tasks is single threaded command.
	 */

	/* Count all the threads. */
	for (i = 0; i < THREADS__TABLE_SIZE; i++)
		nr += machine->threads[i].nr;

	tasks = malloc(sizeof(*tasks) * nr);
	if (!tasks)
		return -ENOMEM;

	for (i = 0; i < THREADS__TABLE_SIZE; i++) {
		struct threads *threads = &machine->threads[i];

		for (nd = rb_first_cached(&threads->entries); nd;
		     nd = rb_next(nd)) {
			task = tasks + itask++;

			task->thread = rb_entry(nd, struct thread_rb_node, rb_node)->thread;
			INIT_LIST_HEAD(&task->children);
			INIT_LIST_HEAD(&task->list);
			thread__set_priv(task->thread, task);
		}
	}

	/*
	 * Iterate every task down to the unprocessed parent
	 * and link all in task children list. Task with no
	 * parent is added into 'list'.
	 */
	for (itask = 0; itask < nr; itask++) {
		task = tasks + itask;

		if (!list_empty(&task->list))
			continue;

		task = tasks_list(task, machine);
		if (IS_ERR(task)) {
			pr_err("Error: failed to process tasks\n");
			free(tasks);
			return PTR_ERR(task);
		}

		if (task)
			list_add_tail(&task->list, &list);
	}

	fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");

	list_for_each_entry(task, &list, list)
		task__print_level(task, fp, 0);

	free(tasks);
	return 0;
}

static int __cmd_report(struct report *rep)
{
	int ret;
	struct perf_session *session = rep->session;
	struct evsel *pos;
	struct perf_data *data = session->data;

	signal(SIGINT, sig_handler);

	if (rep->cpu_list) {
		ret = perf_session__cpu_bitmap(session, rep->cpu_list,
					       rep->cpu_bitmap);
		if (ret) {
			ui__error("failed to set cpu bitmap\n");
			return ret;
		}
		session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
	}

	if (rep->show_threads) {
		ret = perf_read_values_init(&rep->show_threads_values);
		if (ret)
			return ret;
	}

	ret = report__setup_sample_type(rep);
	if (ret) {
		/* report__setup_sample_type() already showed error message */
		return ret;
	}

	if (rep->stats_mode)
		stats_setup(rep);

	if (rep->tasks_mode)
		tasks_setup(rep);

	ret = perf_session__process_events(session);
	if (ret) {
		ui__error("failed to process sample\n");
		return ret;
	}

	evlist__check_mem_load_aux(session->evlist);

	if (rep->stats_mode)
		return stats_print(rep);

	if (rep->tasks_mode)
		return tasks_print(rep, stdout);

	report__warn_kptr_restrict(rep);

	evlist__for_each_entry(session->evlist, pos)
		rep->nr_entries += evsel__hists(pos)->nr_entries;

	if (use_browser == 0) {
		if (verbose > 3)
			perf_session__fprintf(session, stdout);

		if (verbose > 2)
			perf_session__fprintf_dsos(session, stdout);

		if (dump_trace) {
			perf_session__fprintf_nr_events(session, stdout,
							rep->skip_empty);
			evlist__fprintf_nr_events(session->evlist, stdout,
						  rep->skip_empty);
			return 0;
		}
	}

	ret = report__collapse_hists(rep);
	if (ret) {
		ui__error("failed to process hist entry\n");
		return ret;
	}

	if (session_done())
		return 0;

	/*
	 * recalculate number of entries after collapsing since it
	 * might be changed during the collapse phase.
	 */
	rep->nr_entries = 0;
	evlist__for_each_entry(session->evlist, pos)
		rep->nr_entries += evsel__hists(pos)->nr_entries;

	if (rep->nr_entries == 0) {
		ui__error("The %s data has no samples!\n", data->path);
		return 0;
	}

	report__output_resort(rep);

	if (rep->total_cycles_mode) {
		int block_hpps[6] = {
			PERF_HPP_REPORT__BLOCK_TOTAL_CYCLES_PCT,
			PERF_HPP_REPORT__BLOCK_LBR_CYCLES,
			PERF_HPP_REPORT__BLOCK_CYCLES_PCT,
			PERF_HPP_REPORT__BLOCK_AVG_CYCLES,
			PERF_HPP_REPORT__BLOCK_RANGE,
			PERF_HPP_REPORT__BLOCK_DSO,
		};

		rep->block_reports = block_info__create_report(session->evlist,
							       rep->total_cycles,
							       block_hpps, 6,
							       &rep->nr_block_reports);
		if (!rep->block_reports)
			return -1;
	}

	return report__browse_hists(rep);
}

static int
report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
{
	struct callchain_param *callchain = opt->value;

	callchain->enabled = !unset;
	/*
	 * --no-call-graph
	 */
	if (unset) {
		symbol_conf.use_callchain = false;
		callchain->mode = CHAIN_NONE;
		return 0;
	}

	return parse_callchain_report_opt(arg);
}

static int
parse_time_quantum(const struct option *opt, const char *arg,
		   int unset __maybe_unused)
{
	unsigned long *time_q = opt->value;
	char *end;

	*time_q = strtoul(arg, &end, 0);
	if (end == arg)
		goto parse_err;
	if (*time_q == 0) {
		pr_err("time quantum cannot be 0");
		return -1;
	}
	end = skip_spaces(end);
	if (*end == 0)
		return 0;
	if (!strcmp(end, "s")) {
		*time_q *= NSEC_PER_SEC;
		return 0;
	}
	if (!strcmp(end, "ms")) {
		*time_q *= NSEC_PER_MSEC;
		return 0;
	}
	if (!strcmp(end, "us")) {
		*time_q *= NSEC_PER_USEC;
		return 0;
	}
	if (!strcmp(end, "ns"))
		return 0;
parse_err:
	pr_err("Cannot parse time quantum `%s'\n", arg);
	return -1;
}

int
report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
				const char *arg, int unset __maybe_unused)
{
	if (arg) {
		int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
		if (err) {
			char buf[BUFSIZ];
			regerror(err, &ignore_callees_regex, buf, sizeof(buf));
			pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
			return -1;
		}
		have_ignore_callees = 1;
	}

	return 0;
}

static int
parse_branch_mode(const struct option *opt,
		  const char *str __maybe_unused, int unset)
{
	int *branch_mode = opt->value;

	*branch_mode = !unset;
	return 0;
}

static int
parse_percent_limit(const struct option *opt, const char *str,
		    int unset __maybe_unused)
{
	struct report *rep = opt->value;
	double pcnt = strtof(str, NULL);

	rep->min_percent = pcnt;
	callchain_param.min_percent = pcnt;
	return 0;
}

static int process_attr(struct perf_tool *tool __maybe_unused,
			union perf_event *event,
			struct evlist **pevlist)
{
	u64 sample_type;
	int err;

	err = perf_event__process_attr(tool, event, pevlist);
	if (err)
		return err;

	/*
	 * Check if we need to enable callchains based
	 * on events sample_type.
	 */
	sample_type = evlist__combined_sample_type(*pevlist);
	callchain_param_setup(sample_type, perf_env__arch((*pevlist)->env));
	return 0;
}

int cmd_report(int argc, const char **argv)
{
	struct perf_session *session;
	struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
	struct stat st;
	bool has_br_stack = false;
	int branch_mode = -1;
	int last_key = 0;
	bool branch_call_mode = false;
#define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
	static const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
						    CALLCHAIN_REPORT_HELP
						    "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
	char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
	const char * const report_usage[] = {
		"perf report [<options>]",
		NULL
	};
	struct report report = {
		.tool = {
			.sample		 = process_sample_event,
			.mmap		 = perf_event__process_mmap,
			.mmap2		 = perf_event__process_mmap2,
			.comm		 = perf_event__process_comm,
			.namespaces	 = perf_event__process_namespaces,
			.cgroup		 = perf_event__process_cgroup,
			.exit		 = perf_event__process_exit,
			.fork		 = perf_event__process_fork,
			.lost		 = perf_event__process_lost,
			.read		 = process_read_event,
			.attr		 = process_attr,
#ifdef HAVE_LIBTRACEEVENT
			.tracing_data	 = perf_event__process_tracing_data,
#endif
			.build_id	 = perf_event__process_build_id,
			.id_index	 = perf_event__process_id_index,
			.auxtrace_info	 = perf_event__process_auxtrace_info,
			.auxtrace	 = perf_event__process_auxtrace,
			.event_update	 = perf_event__process_event_update,
			.feature	 = process_feature_event,
			.ordered_events	 = true,
			.ordering_requires_timestamps = true,
		},
		.max_stack		 = PERF_MAX_STACK_DEPTH,
		.pretty_printing_style	 = "normal",
		.socket_filter		 = -1,
		.skip_empty		 = true,
	};
	char *sort_order_help = sort_help("sort by key(s):");
	char *field_order_help = sort_help("output field(s): overhead period sample ");
	const char *disassembler_style = NULL, *objdump_path = NULL, *addr2line_path = NULL;
	const struct option options[] = {
	OPT_STRING('i', "input", &input_name, "file",
		    "input file name"),
	OPT_INCR('v', "verbose", &verbose,
		    "be more verbose (show symbol address, etc)"),
	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any warnings or messages"),
	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
		    "dump raw trace in ASCII"),
	OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
	OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
	OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
	OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
		   "file", "vmlinux pathname"),
	OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
                    "don't load vmlinux even if found"),
	OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
		   "file", "kallsyms pathname"),
	OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
	OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
		    "load module symbols - WARNING: use only with -k and LIVE kernel"),
	OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
		    "Show a column with the number of samples"),
	OPT_BOOLEAN('T', "threads", &report.show_threads,
		    "Show per-thread event counters"),
	OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
		   "pretty printing style key: normal raw"),
#ifdef HAVE_SLANG_SUPPORT
	OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
#endif
#ifdef HAVE_GTK2_SUPPORT
	OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
#endif
	OPT_BOOLEAN(0, "stdio", &report.use_stdio,
		    "Use the stdio interface"),
	OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
	OPT_BOOLEAN(0, "header-only", &report.header_only,
		    "Show only data header."),
	OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
		   sort_order_help),
	OPT_STRING('F', "fields", &field_order, "key[,keys...]",
		   field_order_help),
	OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
		    "Show sample percentage for different cpu modes"),
	OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
		    "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
	OPT_STRING('p', "parent", &parent_pattern, "regex",
		   "regex filter to identify parent, see: '--sort parent'"),
	OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
		    "Only display entries with parent-match"),
	OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
			     "print_type,threshold[,print_limit],order,sort_key[,branch],value",
			     report_callchain_help, &report_parse_callchain_opt,
			     callchain_default_opt),
	OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
		    "Accumulate callchains of children and show total overhead as well. "
		    "Enabled by default, use --no-children to disable."),
	OPT_INTEGER(0, "max-stack", &report.max_stack,
		    "Set the maximum stack depth when parsing the callchain, "
		    "anything beyond the specified depth will be ignored. "
		    "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
	OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
		    "alias for inverted call graph"),
	OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
		   "ignore callees of these functions in call graphs",
		   report_parse_ignore_callees_opt),
	OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
		   "only consider symbols in these dsos"),
	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
		   "only consider symbols in these comms"),
	OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
		   "only consider symbols in these pids"),
	OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
		   "only consider symbols in these tids"),
	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
		   "only consider these symbols"),
	OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
		   "only show symbols that (partially) match with this filter"),
	OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
		   "width[,width...]",
		   "don't try to adjust column width, use these fixed values"),
	OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
		   "separator for columns, no spaces will be added between "
		   "columns '.' is reserved."),
	OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
		    "Only display entries resolved to a symbol"),
	OPT_CALLBACK(0, "symfs", NULL, "directory",
		     "Look for files with symbols relative to this directory",
		     symbol__config_symfs),
	OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
		   "list of cpus to profile"),
	OPT_BOOLEAN('I', "show-info", &report.show_full_info,
		    "Display extended information about perf.data file"),
	OPT_BOOLEAN(0, "source", &annotate_opts.annotate_src,
		    "Interleave source code with assembly code (default)"),
	OPT_BOOLEAN(0, "asm-raw", &annotate_opts.show_asm_raw,
		    "Display raw encoding of assembly instructions (default)"),
	OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
		   "Specify disassembler style (e.g. -M intel for intel syntax)"),
	OPT_STRING(0, "prefix", &annotate_opts.prefix, "prefix",
		    "Add prefix to source file path names in programs (with --prefix-strip)"),
	OPT_STRING(0, "prefix-strip", &annotate_opts.prefix_strip, "N",
		    "Strip first N entries of source file path name in programs (with --prefix)"),
	OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
		    "Show a column with the sum of periods"),
	OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
		    "Show event group information together"),
	OPT_INTEGER(0, "group-sort-idx", &symbol_conf.group_sort_idx,
		    "Sort the output by the event at the index n in group. "
		    "If n is invalid, sort by the first event. "
		    "WARNING: should be used on grouped events."),
	OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
		    "use branch records for per branch histogram filling",
		    parse_branch_mode),
	OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
		    "add last branch records to call history"),
	OPT_STRING(0, "objdump", &objdump_path, "path",
		   "objdump binary to use for disassembly and annotations"),
	OPT_STRING(0, "addr2line", &addr2line_path, "path",
		   "addr2line binary to use for line numbers"),
	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
		    "Disable symbol demangling"),
	OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
		    "Enable kernel symbol demangling"),
	OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
	OPT_INTEGER(0, "samples", &symbol_conf.res_sample,
		    "Number of samples to save per histogram entry for individual browsing"),
	OPT_CALLBACK(0, "percent-limit", &report, "percent",
		     "Don't show entries under that percent", parse_percent_limit),
	OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
		     "how to display percentage of filtered entries", parse_filter_percentage),
	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
			    "Instruction Tracing options\n" ITRACE_HELP,
			    itrace_parse_synth_opts),
	OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
			"Show full source file name path for source lines"),
	OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
		    "Show callgraph from reference event"),
	OPT_BOOLEAN(0, "stitch-lbr", &report.stitch_lbr,
		    "Enable LBR callgraph stitching approach"),
	OPT_INTEGER(0, "socket-filter", &report.socket_filter,
		    "only show processor socket that match with this filter"),
	OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
		    "Show raw trace event output (do not use print fmt or plugins)"),
	OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
		    "Show entries in a hierarchy"),
	OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
			     "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
			     stdio__config_color, "always"),
	OPT_STRING(0, "time", &report.time_str, "str",
		   "Time span of interest (start,stop)"),
	OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
		    "Show inline function"),
	OPT_CALLBACK(0, "percent-type", &annotate_opts, "local-period",
		     "Set percent type local/global-period/hits",
		     annotate_parse_percent_type),
	OPT_BOOLEAN(0, "ns", &symbol_conf.nanosecs, "Show times in nanosecs"),
	OPT_CALLBACK(0, "time-quantum", &symbol_conf.time_quantum, "time (ms|us|ns|s)",
		     "Set time quantum for time sort key (default 100ms)",
		     parse_time_quantum),
	OPTS_EVSWITCH(&report.evswitch),
	OPT_BOOLEAN(0, "total-cycles", &report.total_cycles_mode,
		    "Sort all blocks by 'Sampled Cycles%'"),
	OPT_BOOLEAN(0, "disable-order", &report.disable_order,
		    "Disable raw trace ordering"),
	OPT_BOOLEAN(0, "skip-empty", &report.skip_empty,
		    "Do not display empty (or dummy) events in the output"),
	OPT_END()
	};
	struct perf_data data = {
		.mode  = PERF_DATA_MODE_READ,
	};
	int ret = hists__init();
	char sort_tmp[128];

	if (ret < 0)
		goto exit;

	/*
	 * tasks_mode require access to exited threads to list those that are in
	 * the data file. Off-cpu events are synthesized after other events and
	 * reference exited threads.
	 */
	symbol_conf.keep_exited_threads = true;

	annotation_options__init(&annotate_opts);

	ret = perf_config(report__config, &report);
	if (ret)
		goto exit;

	argc = parse_options(argc, argv, options, report_usage, 0);
	if (argc) {
		/*
		 * Special case: if there's an argument left then assume that
		 * it's a symbol filter:
		 */
		if (argc > 1)
			usage_with_options(report_usage, options);

		report.symbol_filter_str = argv[0];
	}

	if (disassembler_style) {
		annotate_opts.disassembler_style = strdup(disassembler_style);
		if (!annotate_opts.disassembler_style)
			return -ENOMEM;
	}
	if (objdump_path) {
		annotate_opts.objdump_path = strdup(objdump_path);
		if (!annotate_opts.objdump_path)
			return -ENOMEM;
	}
	if (addr2line_path) {
		symbol_conf.addr2line_path = strdup(addr2line_path);
		if (!symbol_conf.addr2line_path)
			return -ENOMEM;
	}

	if (annotate_check_args(&annotate_opts) < 0) {
		ret = -EINVAL;
		goto exit;
	}

	if (report.mmaps_mode)
		report.tasks_mode = true;

	if (dump_trace && report.disable_order)
		report.tool.ordered_events = false;

	if (quiet)
		perf_quiet_option();

	ret = symbol__validate_sym_arguments();
	if (ret)
		goto exit;

	if (report.inverted_callchain)
		callchain_param.order = ORDER_CALLER;
	if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
		callchain_param.order = ORDER_CALLER;

	if ((itrace_synth_opts.callchain || itrace_synth_opts.add_callchain) &&
	    (int)itrace_synth_opts.callchain_sz > report.max_stack)
		report.max_stack = itrace_synth_opts.callchain_sz;

	if (!input_name || !strlen(input_name)) {
		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
			input_name = "-";
		else
			input_name = "perf.data";
	}

	data.path  = input_name;
	data.force = symbol_conf.force;

repeat:
	session = perf_session__new(&data, &report.tool);
	if (IS_ERR(session)) {
		ret = PTR_ERR(session);
		goto exit;
	}

	ret = evswitch__init(&report.evswitch, session->evlist, stderr);
	if (ret)
		goto exit;

	if (zstd_init(&(session->zstd_data), 0) < 0)
		pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");

	if (report.queue_size) {
		ordered_events__set_alloc_size(&session->ordered_events,
					       report.queue_size);
	}

	session->itrace_synth_opts = &itrace_synth_opts;

	report.session = session;

	has_br_stack = perf_header__has_feat(&session->header,
					     HEADER_BRANCH_STACK);
	if (evlist__combined_sample_type(session->evlist) & PERF_SAMPLE_STACK_USER)
		has_br_stack = false;

	setup_forced_leader(&report, session->evlist);

	if (symbol_conf.group_sort_idx && evlist__nr_groups(session->evlist) == 0) {
		parse_options_usage(NULL, options, "group-sort-idx", 0);
		ret = -EINVAL;
		goto error;
	}

	if (itrace_synth_opts.last_branch || itrace_synth_opts.add_last_branch)
		has_br_stack = true;

	if (has_br_stack && branch_call_mode)
		symbol_conf.show_branchflag_count = true;

	memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));

	/*
	 * Branch mode is a tristate:
	 * -1 means default, so decide based on the file having branch data.
	 * 0/1 means the user chose a mode.
	 */
	if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
	    !branch_call_mode) {
		sort__mode = SORT_MODE__BRANCH;
		symbol_conf.cumulate_callchain = false;
	}
	if (branch_call_mode) {
		callchain_param.key = CCKEY_ADDRESS;
		callchain_param.branch_callstack = true;
		symbol_conf.use_callchain = true;
		callchain_register_param(&callchain_param);
		if (sort_order == NULL)
			sort_order = "srcline,symbol,dso";
	}

	if (report.mem_mode) {
		if (sort__mode == SORT_MODE__BRANCH) {
			pr_err("branch and mem mode incompatible\n");
			goto error;
		}
		sort__mode = SORT_MODE__MEMORY;
		symbol_conf.cumulate_callchain = false;
	}

	if (symbol_conf.report_hierarchy) {
		/* disable incompatible options */
		symbol_conf.cumulate_callchain = false;

		if (field_order) {
			pr_err("Error: --hierarchy and --fields options cannot be used together\n");
			parse_options_usage(report_usage, options, "F", 1);
			parse_options_usage(NULL, options, "hierarchy", 0);
			goto error;
		}

		perf_hpp_list.need_collapse = true;
	}

	if (report.use_stdio)
		use_browser = 0;
#ifdef HAVE_SLANG_SUPPORT
	else if (report.use_tui)
		use_browser = 1;
#endif
#ifdef HAVE_GTK2_SUPPORT
	else if (report.use_gtk)
		use_browser = 2;
#endif

	/* Force tty output for header output and per-thread stat. */
	if (report.header || report.header_only || report.show_threads)
		use_browser = 0;
	if (report.header || report.header_only)
		report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
	if (report.show_full_info)
		report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
	if (report.stats_mode || report.tasks_mode)
		use_browser = 0;
	if (report.stats_mode && report.tasks_mode) {
		pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
		goto error;
	}

	if (report.total_cycles_mode) {
		if (sort__mode != SORT_MODE__BRANCH)
			report.total_cycles_mode = false;
		else
			sort_order = NULL;
	}

	if (strcmp(input_name, "-") != 0)
		setup_browser(true);
	else
		use_browser = 0;

	if (sort_order && strstr(sort_order, "ipc")) {
		parse_options_usage(report_usage, options, "s", 1);
		goto error;
	}

	if (sort_order && strstr(sort_order, "symbol")) {
		if (sort__mode == SORT_MODE__BRANCH) {
			snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
				 sort_order, "ipc_lbr");
			report.symbol_ipc = true;
		} else {
			snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
				 sort_order, "ipc_null");
		}

		sort_order = sort_tmp;
	}

	if ((last_key != K_SWITCH_INPUT_DATA && last_key != K_RELOAD) &&
	    (setup_sorting(session->evlist) < 0)) {
		if (sort_order)
			parse_options_usage(report_usage, options, "s", 1);
		if (field_order)
			parse_options_usage(sort_order ? NULL : report_usage,
					    options, "F", 1);
		goto error;
	}

	if ((report.header || report.header_only) && !quiet) {
		perf_session__fprintf_info(session, stdout,
					   report.show_full_info);
		if (report.header_only) {
			if (data.is_pipe) {
				/*
				 * we need to process first few records
				 * which contains PERF_RECORD_HEADER_FEATURE.
				 */
				perf_session__process_events(session);
			}
			ret = 0;
			goto error;
		}
	} else if (use_browser == 0 && !quiet &&
		   !report.stats_mode && !report.tasks_mode) {
		fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
		      stdout);
	}

	/*
	 * Only in the TUI browser we are doing integrated annotation,
	 * so don't allocate extra space that won't be used in the stdio
	 * implementation.
	 */
	if (ui__has_annotation() || report.symbol_ipc ||
	    report.total_cycles_mode) {
		ret = symbol__annotation_init();
		if (ret < 0)
			goto error;
		/*
 		 * For searching by name on the "Browse map details".
 		 * providing it only in verbose mode not to bloat too
 		 * much struct symbol.
 		 */
		if (verbose > 0) {
			/*
			 * XXX: Need to provide a less kludgy way to ask for
			 * more space per symbol, the u32 is for the index on
			 * the ui browser.
			 * See symbol__browser_index.
			 */
			symbol_conf.priv_size += sizeof(u32);
		}
		annotation_config__init(&annotate_opts);
	}

	if (symbol__init(&session->header.env) < 0)
		goto error;

	if (report.time_str) {
		ret = perf_time__parse_for_ranges(report.time_str, session,
						  &report.ptime_range,
						  &report.range_size,
						  &report.range_num);
		if (ret < 0)
			goto error;

		itrace_synth_opts__set_time_range(&itrace_synth_opts,
						  report.ptime_range,
						  report.range_num);
	}

#ifdef HAVE_LIBTRACEEVENT
	if (session->tevent.pevent &&
	    tep_set_function_resolver(session->tevent.pevent,
				      machine__resolve_kernel_addr,
				      &session->machines.host) < 0) {
		pr_err("%s: failed to set libtraceevent function resolver\n",
		       __func__);
		return -1;
	}
#endif
	sort__setup_elide(stdout);

	ret = __cmd_report(&report);
	if (ret == K_SWITCH_INPUT_DATA || ret == K_RELOAD) {
		perf_session__delete(session);
		last_key = K_SWITCH_INPUT_DATA;
		goto repeat;
	} else
		ret = 0;

error:
	if (report.ptime_range) {
		itrace_synth_opts__clear_time_range(&itrace_synth_opts);
		zfree(&report.ptime_range);
	}

	if (report.block_reports) {
		block_info__free_report(report.block_reports,
					report.nr_block_reports);
		report.block_reports = NULL;
	}

	zstd_fini(&(session->zstd_data));
	perf_session__delete(session);
exit:
	annotation_options__exit(&annotate_opts);
	free(sort_order_help);
	free(field_order_help);
	return ret;
}