summaryrefslogtreecommitdiff
path: root/tools/perf/ui/browsers/annotate.c
blob: e81c2493efdf9eb1884a7471821876e370387ecc (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
// SPDX-License-Identifier: GPL-2.0
#include "../browser.h"
#include "../helpline.h"
#include "../ui.h"
#include "../../util/annotate.h"
#include "../../util/debug.h"
#include "../../util/dso.h"
#include "../../util/hist.h"
#include "../../util/sort.h"
#include "../../util/map.h"
#include "../../util/symbol.h"
#include "../../util/evsel.h"
#include "../../util/evlist.h"
#include <inttypes.h>
#include <pthread.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/zalloc.h>
#include <sys/ttydefaults.h>
#include <asm/bug.h>

struct disasm_line_samples {
	double		      percent;
	struct sym_hist_entry he;
};

struct arch;

struct annotate_browser {
	struct ui_browser	    b;
	struct rb_root		    entries;
	struct rb_node		   *curr_hot;
	struct annotation_line	   *selection;
	struct arch		   *arch;
	struct annotation_options  *opts;
	bool			    searching_backwards;
	char			    search_bf[128];
};

static inline struct annotation *browser__annotation(struct ui_browser *browser)
{
	struct map_symbol *ms = browser->priv;
	return symbol__annotation(ms->sym);
}

static bool disasm_line__filter(struct ui_browser *browser, void *entry)
{
	struct annotation *notes = browser__annotation(browser);
	struct annotation_line *al = list_entry(entry, struct annotation_line, node);
	return annotation_line__filter(al, notes);
}

static int ui_browser__jumps_percent_color(struct ui_browser *browser, int nr, bool current)
{
	struct annotation *notes = browser__annotation(browser);

	if (current && (!browser->use_navkeypressed || browser->navkeypressed))
		return HE_COLORSET_SELECTED;
	if (nr == notes->max_jump_sources)
		return HE_COLORSET_TOP;
	if (nr > 1)
		return HE_COLORSET_MEDIUM;
	return HE_COLORSET_NORMAL;
}

static int ui_browser__set_jumps_percent_color(void *browser, int nr, bool current)
{
	 int color = ui_browser__jumps_percent_color(browser, nr, current);
	 return ui_browser__set_color(browser, color);
}

static int annotate_browser__set_color(void *browser, int color)
{
	return ui_browser__set_color(browser, color);
}

static void annotate_browser__write_graph(void *browser, int graph)
{
	ui_browser__write_graph(browser, graph);
}

static void annotate_browser__set_percent_color(void *browser, double percent, bool current)
{
	ui_browser__set_percent_color(browser, percent, current);
}

static void annotate_browser__printf(void *browser, const char *fmt, ...)
{
	va_list args;

	va_start(args, fmt);
	ui_browser__vprintf(browser, fmt, args);
	va_end(args);
}

static void annotate_browser__write(struct ui_browser *browser, void *entry, int row)
{
	struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
	struct annotation *notes = browser__annotation(browser);
	struct annotation_line *al = list_entry(entry, struct annotation_line, node);
	const bool is_current_entry = ui_browser__is_current_entry(browser, row);
	struct annotation_write_ops ops = {
		.first_line		 = row == 0,
		.current_entry		 = is_current_entry,
		.change_color		 = (!notes->options->hide_src_code &&
					    (!is_current_entry ||
					     (browser->use_navkeypressed &&
					      !browser->navkeypressed))),
		.width			 = browser->width,
		.obj			 = browser,
		.set_color		 = annotate_browser__set_color,
		.set_percent_color	 = annotate_browser__set_percent_color,
		.set_jumps_percent_color = ui_browser__set_jumps_percent_color,
		.printf			 = annotate_browser__printf,
		.write_graph		 = annotate_browser__write_graph,
	};

	/* The scroll bar isn't being used */
	if (!browser->navkeypressed)
		ops.width += 1;

	annotation_line__write(al, notes, &ops, ab->opts);

	if (ops.current_entry)
		ab->selection = al;
}

static int is_fused(struct annotate_browser *ab, struct disasm_line *cursor)
{
	struct disasm_line *pos = list_prev_entry(cursor, al.node);
	const char *name;
	int diff = 1;

	while (pos && pos->al.offset == -1) {
		pos = list_prev_entry(pos, al.node);
		if (!ab->opts->hide_src_code)
			diff++;
	}

	if (!pos)
		return 0;

	if (ins__is_lock(&pos->ins))
		name = pos->ops.locked.ins.name;
	else
		name = pos->ins.name;

	if (!name || !cursor->ins.name)
		return 0;

	if (ins__is_fused(ab->arch, name, cursor->ins.name))
		return diff;
	return 0;
}

static void annotate_browser__draw_current_jump(struct ui_browser *browser)
{
	struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
	struct disasm_line *cursor = disasm_line(ab->selection);
	struct annotation_line *target;
	unsigned int from, to;
	struct map_symbol *ms = ab->b.priv;
	struct symbol *sym = ms->sym;
	struct annotation *notes = symbol__annotation(sym);
	u8 pcnt_width = annotation__pcnt_width(notes);
	int width;
	int diff = 0;

	/* PLT symbols contain external offsets */
	if (strstr(sym->name, "@plt"))
		return;

	if (!disasm_line__is_valid_local_jump(cursor, sym))
		return;

	/*
	 * This first was seen with a gcc function, _cpp_lex_token, that
	 * has the usual jumps:
	 *
	 *  │1159e6c: ↓ jne    115aa32 <_cpp_lex_token@@Base+0xf92>
	 *
	 * I.e. jumps to a label inside that function (_cpp_lex_token), and
	 * those works, but also this kind:
	 *
	 *  │1159e8b: ↓ jne    c469be <cpp_named_operator2name@@Base+0xa72>
	 *
	 *  I.e. jumps to another function, outside _cpp_lex_token, which
	 *  are not being correctly handled generating as a side effect references
	 *  to ab->offset[] entries that are set to NULL, so to make this code
	 *  more robust, check that here.
	 *
	 *  A proper fix for will be put in place, looking at the function
	 *  name right after the '<' token and probably treating this like a
	 *  'call' instruction.
	 */
	target = notes->offsets[cursor->ops.target.offset];
	if (target == NULL) {
		ui_helpline__printf("WARN: jump target inconsistency, press 'o', notes->offsets[%#x] = NULL\n",
				    cursor->ops.target.offset);
		return;
	}

	if (notes->options->hide_src_code) {
		from = cursor->al.idx_asm;
		to = target->idx_asm;
	} else {
		from = (u64)cursor->al.idx;
		to = (u64)target->idx;
	}

	width = annotation__cycles_width(notes);

	ui_browser__set_color(browser, HE_COLORSET_JUMP_ARROWS);
	__ui_browser__line_arrow(browser,
				 pcnt_width + 2 + notes->widths.addr + width,
				 from, to);

	diff = is_fused(ab, cursor);
	if (diff > 0) {
		ui_browser__mark_fused(browser,
				       pcnt_width + 3 + notes->widths.addr + width,
				       from - diff, diff, to > from);
	}
}

static unsigned int annotate_browser__refresh(struct ui_browser *browser)
{
	struct annotation *notes = browser__annotation(browser);
	int ret = ui_browser__list_head_refresh(browser);
	int pcnt_width = annotation__pcnt_width(notes);

	if (notes->options->jump_arrows)
		annotate_browser__draw_current_jump(browser);

	ui_browser__set_color(browser, HE_COLORSET_NORMAL);
	__ui_browser__vline(browser, pcnt_width, 0, browser->rows - 1);
	return ret;
}

static double disasm__cmp(struct annotation_line *a, struct annotation_line *b,
						  int percent_type)
{
	int i;

	for (i = 0; i < a->data_nr; i++) {
		if (a->data[i].percent[percent_type] == b->data[i].percent[percent_type])
			continue;
		return a->data[i].percent[percent_type] -
			   b->data[i].percent[percent_type];
	}
	return 0;
}

static void disasm_rb_tree__insert(struct annotate_browser *browser,
				struct annotation_line *al)
{
	struct rb_root *root = &browser->entries;
	struct rb_node **p = &root->rb_node;
	struct rb_node *parent = NULL;
	struct annotation_line *l;

	while (*p != NULL) {
		parent = *p;
		l = rb_entry(parent, struct annotation_line, rb_node);

		if (disasm__cmp(al, l, browser->opts->percent_type) < 0)
			p = &(*p)->rb_left;
		else
			p = &(*p)->rb_right;
	}
	rb_link_node(&al->rb_node, parent, p);
	rb_insert_color(&al->rb_node, root);
}

static void annotate_browser__set_top(struct annotate_browser *browser,
				      struct annotation_line *pos, u32 idx)
{
	struct annotation *notes = browser__annotation(&browser->b);
	unsigned back;

	ui_browser__refresh_dimensions(&browser->b);
	back = browser->b.height / 2;
	browser->b.top_idx = browser->b.index = idx;

	while (browser->b.top_idx != 0 && back != 0) {
		pos = list_entry(pos->node.prev, struct annotation_line, node);

		if (annotation_line__filter(pos, notes))
			continue;

		--browser->b.top_idx;
		--back;
	}

	browser->b.top = pos;
	browser->b.navkeypressed = true;
}

static void annotate_browser__set_rb_top(struct annotate_browser *browser,
					 struct rb_node *nd)
{
	struct annotation *notes = browser__annotation(&browser->b);
	struct annotation_line * pos = rb_entry(nd, struct annotation_line, rb_node);
	u32 idx = pos->idx;

	if (notes->options->hide_src_code)
		idx = pos->idx_asm;
	annotate_browser__set_top(browser, pos, idx);
	browser->curr_hot = nd;
}

static void annotate_browser__calc_percent(struct annotate_browser *browser,
					   struct evsel *evsel)
{
	struct map_symbol *ms = browser->b.priv;
	struct symbol *sym = ms->sym;
	struct annotation *notes = symbol__annotation(sym);
	struct disasm_line *pos;

	browser->entries = RB_ROOT;

	pthread_mutex_lock(&notes->lock);

	symbol__calc_percent(sym, evsel);

	list_for_each_entry(pos, &notes->src->source, al.node) {
		double max_percent = 0.0;
		int i;

		if (pos->al.offset == -1) {
			RB_CLEAR_NODE(&pos->al.rb_node);
			continue;
		}

		for (i = 0; i < pos->al.data_nr; i++) {
			double percent;

			percent = annotation_data__percent(&pos->al.data[i],
							   browser->opts->percent_type);

			if (max_percent < percent)
				max_percent = percent;
		}

		if (max_percent < 0.01 && pos->al.ipc == 0) {
			RB_CLEAR_NODE(&pos->al.rb_node);
			continue;
		}
		disasm_rb_tree__insert(browser, &pos->al);
	}
	pthread_mutex_unlock(&notes->lock);

	browser->curr_hot = rb_last(&browser->entries);
}

static struct annotation_line *annotate_browser__find_next_asm_line(
					struct annotate_browser *browser,
					struct annotation_line *al)
{
	struct annotation_line *it = al;

	/* find next asm line */
	list_for_each_entry_continue(it, browser->b.entries, node) {
		if (it->idx_asm >= 0)
			return it;
	}

	/* no asm line found forwards, try backwards */
	it = al;
	list_for_each_entry_continue_reverse(it, browser->b.entries, node) {
		if (it->idx_asm >= 0)
			return it;
	}

	/* There are no asm lines */
	return NULL;
}

static bool annotate_browser__toggle_source(struct annotate_browser *browser)
{
	struct annotation *notes = browser__annotation(&browser->b);
	struct annotation_line *al;
	off_t offset = browser->b.index - browser->b.top_idx;

	browser->b.seek(&browser->b, offset, SEEK_CUR);
	al = list_entry(browser->b.top, struct annotation_line, node);

	if (notes->options->hide_src_code) {
		if (al->idx_asm < offset)
			offset = al->idx;

		browser->b.nr_entries = notes->nr_entries;
		notes->options->hide_src_code = false;
		browser->b.seek(&browser->b, -offset, SEEK_CUR);
		browser->b.top_idx = al->idx - offset;
		browser->b.index = al->idx;
	} else {
		if (al->idx_asm < 0) {
			/* move cursor to next asm line */
			al = annotate_browser__find_next_asm_line(browser, al);
			if (!al) {
				browser->b.seek(&browser->b, -offset, SEEK_CUR);
				return false;
			}
		}

		if (al->idx_asm < offset)
			offset = al->idx_asm;

		browser->b.nr_entries = notes->nr_asm_entries;
		notes->options->hide_src_code = true;
		browser->b.seek(&browser->b, -offset, SEEK_CUR);
		browser->b.top_idx = al->idx_asm - offset;
		browser->b.index = al->idx_asm;
	}

	return true;
}

#define SYM_TITLE_MAX_SIZE (PATH_MAX + 64)

static void annotate_browser__show_full_location(struct ui_browser *browser)
{
	struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
	struct disasm_line *cursor = disasm_line(ab->selection);
	struct annotation_line *al = &cursor->al;

	if (al->offset != -1)
		ui_helpline__puts("Only available for source code lines.");
	else if (al->fileloc == NULL)
		ui_helpline__puts("No source file location.");
	else {
		char help_line[SYM_TITLE_MAX_SIZE];
		sprintf (help_line, "Source file location: %s", al->fileloc);
		ui_helpline__puts(help_line);
	}
}

static void ui_browser__init_asm_mode(struct ui_browser *browser)
{
	struct annotation *notes = browser__annotation(browser);
	ui_browser__reset_index(browser);
	browser->nr_entries = notes->nr_asm_entries;
}

static int sym_title(struct symbol *sym, struct map *map, char *title,
		     size_t sz, int percent_type)
{
	return snprintf(title, sz, "%s  %s [Percent: %s]", sym->name, map->dso->long_name,
			percent_type_str(percent_type));
}

/*
 * This can be called from external jumps, i.e. jumps from one function
 * to another, like from the kernel's entry_SYSCALL_64 function to the
 * swapgs_restore_regs_and_return_to_usermode() function.
 *
 * So all we check here is that dl->ops.target.sym is set, if it is, just
 * go to that function and when exiting from its disassembly, come back
 * to the calling function.
 */
static bool annotate_browser__callq(struct annotate_browser *browser,
				    struct evsel *evsel,
				    struct hist_browser_timer *hbt)
{
	struct map_symbol *ms = browser->b.priv, target_ms;
	struct disasm_line *dl = disasm_line(browser->selection);
	struct annotation *notes;
	char title[SYM_TITLE_MAX_SIZE];

	if (!dl->ops.target.sym) {
		ui_helpline__puts("The called function was not found.");
		return true;
	}

	notes = symbol__annotation(dl->ops.target.sym);
	pthread_mutex_lock(&notes->lock);

	if (!symbol__hists(dl->ops.target.sym, evsel->evlist->core.nr_entries)) {
		pthread_mutex_unlock(&notes->lock);
		ui__warning("Not enough memory for annotating '%s' symbol!\n",
			    dl->ops.target.sym->name);
		return true;
	}

	target_ms.maps = ms->maps;
	target_ms.map = ms->map;
	target_ms.sym = dl->ops.target.sym;
	pthread_mutex_unlock(&notes->lock);
	symbol__tui_annotate(&target_ms, evsel, hbt, browser->opts);
	sym_title(ms->sym, ms->map, title, sizeof(title), browser->opts->percent_type);
	ui_browser__show_title(&browser->b, title);
	return true;
}

static
struct disasm_line *annotate_browser__find_offset(struct annotate_browser *browser,
					  s64 offset, s64 *idx)
{
	struct annotation *notes = browser__annotation(&browser->b);
	struct disasm_line *pos;

	*idx = 0;
	list_for_each_entry(pos, &notes->src->source, al.node) {
		if (pos->al.offset == offset)
			return pos;
		if (!annotation_line__filter(&pos->al, notes))
			++*idx;
	}

	return NULL;
}

static bool annotate_browser__jump(struct annotate_browser *browser,
				   struct evsel *evsel,
				   struct hist_browser_timer *hbt)
{
	struct disasm_line *dl = disasm_line(browser->selection);
	u64 offset;
	s64 idx;

	if (!ins__is_jump(&dl->ins))
		return false;

	if (dl->ops.target.outside) {
		annotate_browser__callq(browser, evsel, hbt);
		return true;
	}

	offset = dl->ops.target.offset;
	dl = annotate_browser__find_offset(browser, offset, &idx);
	if (dl == NULL) {
		ui_helpline__printf("Invalid jump offset: %" PRIx64, offset);
		return true;
	}

	annotate_browser__set_top(browser, &dl->al, idx);

	return true;
}

static
struct annotation_line *annotate_browser__find_string(struct annotate_browser *browser,
					  char *s, s64 *idx)
{
	struct annotation *notes = browser__annotation(&browser->b);
	struct annotation_line *al = browser->selection;

	*idx = browser->b.index;
	list_for_each_entry_continue(al, &notes->src->source, node) {
		if (annotation_line__filter(al, notes))
			continue;

		++*idx;

		if (al->line && strstr(al->line, s) != NULL)
			return al;
	}

	return NULL;
}

static bool __annotate_browser__search(struct annotate_browser *browser)
{
	struct annotation_line *al;
	s64 idx;

	al = annotate_browser__find_string(browser, browser->search_bf, &idx);
	if (al == NULL) {
		ui_helpline__puts("String not found!");
		return false;
	}

	annotate_browser__set_top(browser, al, idx);
	browser->searching_backwards = false;
	return true;
}

static
struct annotation_line *annotate_browser__find_string_reverse(struct annotate_browser *browser,
						  char *s, s64 *idx)
{
	struct annotation *notes = browser__annotation(&browser->b);
	struct annotation_line *al = browser->selection;

	*idx = browser->b.index;
	list_for_each_entry_continue_reverse(al, &notes->src->source, node) {
		if (annotation_line__filter(al, notes))
			continue;

		--*idx;

		if (al->line && strstr(al->line, s) != NULL)
			return al;
	}

	return NULL;
}

static bool __annotate_browser__search_reverse(struct annotate_browser *browser)
{
	struct annotation_line *al;
	s64 idx;

	al = annotate_browser__find_string_reverse(browser, browser->search_bf, &idx);
	if (al == NULL) {
		ui_helpline__puts("String not found!");
		return false;
	}

	annotate_browser__set_top(browser, al, idx);
	browser->searching_backwards = true;
	return true;
}

static bool annotate_browser__search_window(struct annotate_browser *browser,
					    int delay_secs)
{
	if (ui_browser__input_window("Search", "String: ", browser->search_bf,
				     "ENTER: OK, ESC: Cancel",
				     delay_secs * 2) != K_ENTER ||
	    !*browser->search_bf)
		return false;

	return true;
}

static bool annotate_browser__search(struct annotate_browser *browser, int delay_secs)
{
	if (annotate_browser__search_window(browser, delay_secs))
		return __annotate_browser__search(browser);

	return false;
}

static bool annotate_browser__continue_search(struct annotate_browser *browser,
					      int delay_secs)
{
	if (!*browser->search_bf)
		return annotate_browser__search(browser, delay_secs);

	return __annotate_browser__search(browser);
}

static bool annotate_browser__search_reverse(struct annotate_browser *browser,
					   int delay_secs)
{
	if (annotate_browser__search_window(browser, delay_secs))
		return __annotate_browser__search_reverse(browser);

	return false;
}

static
bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,
					       int delay_secs)
{
	if (!*browser->search_bf)
		return annotate_browser__search_reverse(browser, delay_secs);

	return __annotate_browser__search_reverse(browser);
}

static int annotate_browser__show(struct ui_browser *browser, char *title, const char *help)
{
	struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
	struct map_symbol *ms = browser->priv;
	struct symbol *sym = ms->sym;
	char symbol_dso[SYM_TITLE_MAX_SIZE];

	if (ui_browser__show(browser, title, help) < 0)
		return -1;

	sym_title(sym, ms->map, symbol_dso, sizeof(symbol_dso), ab->opts->percent_type);

	ui_browser__gotorc_title(browser, 0, 0);
	ui_browser__set_color(browser, HE_COLORSET_ROOT);
	ui_browser__write_nstring(browser, symbol_dso, browser->width + 1);
	return 0;
}

static void
switch_percent_type(struct annotation_options *opts, bool base)
{
	switch (opts->percent_type) {
	case PERCENT_HITS_LOCAL:
		if (base)
			opts->percent_type = PERCENT_PERIOD_LOCAL;
		else
			opts->percent_type = PERCENT_HITS_GLOBAL;
		break;
	case PERCENT_HITS_GLOBAL:
		if (base)
			opts->percent_type = PERCENT_PERIOD_GLOBAL;
		else
			opts->percent_type = PERCENT_HITS_LOCAL;
		break;
	case PERCENT_PERIOD_LOCAL:
		if (base)
			opts->percent_type = PERCENT_HITS_LOCAL;
		else
			opts->percent_type = PERCENT_PERIOD_GLOBAL;
		break;
	case PERCENT_PERIOD_GLOBAL:
		if (base)
			opts->percent_type = PERCENT_HITS_GLOBAL;
		else
			opts->percent_type = PERCENT_PERIOD_LOCAL;
		break;
	default:
		WARN_ON(1);
	}
}

static int annotate_browser__run(struct annotate_browser *browser,
				 struct evsel *evsel,
				 struct hist_browser_timer *hbt)
{
	struct rb_node *nd = NULL;
	struct hists *hists = evsel__hists(evsel);
	struct map_symbol *ms = browser->b.priv;
	struct symbol *sym = ms->sym;
	struct annotation *notes = symbol__annotation(ms->sym);
	const char *help = "Press 'h' for help on key bindings";
	int delay_secs = hbt ? hbt->refresh : 0;
	char title[256];
	int key;

	hists__scnprintf_title(hists, title, sizeof(title));
	if (annotate_browser__show(&browser->b, title, help) < 0)
		return -1;

	annotate_browser__calc_percent(browser, evsel);

	if (browser->curr_hot) {
		annotate_browser__set_rb_top(browser, browser->curr_hot);
		browser->b.navkeypressed = false;
	}

	nd = browser->curr_hot;

	while (1) {
		key = ui_browser__run(&browser->b, delay_secs);

		if (delay_secs != 0) {
			annotate_browser__calc_percent(browser, evsel);
			/*
			 * Current line focus got out of the list of most active
			 * lines, NULL it so that if TAB|UNTAB is pressed, we
			 * move to curr_hot (current hottest line).
			 */
			if (nd != NULL && RB_EMPTY_NODE(nd))
				nd = NULL;
		}

		switch (key) {
		case K_TIMER:
			if (hbt)
				hbt->timer(hbt->arg);

			if (delay_secs != 0) {
				symbol__annotate_decay_histogram(sym, evsel->core.idx);
				hists__scnprintf_title(hists, title, sizeof(title));
				annotate_browser__show(&browser->b, title, help);
			}
			continue;
		case K_TAB:
			if (nd != NULL) {
				nd = rb_prev(nd);
				if (nd == NULL)
					nd = rb_last(&browser->entries);
			} else
				nd = browser->curr_hot;
			break;
		case K_UNTAB:
			if (nd != NULL) {
				nd = rb_next(nd);
				if (nd == NULL)
					nd = rb_first(&browser->entries);
			} else
				nd = browser->curr_hot;
			break;
		case K_F1:
		case 'h':
			ui_browser__help_window(&browser->b,
		"UP/DOWN/PGUP\n"
		"PGDN/SPACE    Navigate\n"
		"q/ESC/CTRL+C  Exit\n\n"
		"ENTER         Go to target\n"
		"ESC           Exit\n"
		"H             Go to hottest instruction\n"
		"TAB/shift+TAB Cycle thru hottest instructions\n"
		"j             Toggle showing jump to target arrows\n"
		"J             Toggle showing number of jump sources on targets\n"
		"n             Search next string\n"
		"o             Toggle disassembler output/simplified view\n"
		"O             Bump offset level (jump targets -> +call -> all -> cycle thru)\n"
		"s             Toggle source code view\n"
		"t             Circulate percent, total period, samples view\n"
		"c             Show min/max cycle\n"
		"/             Search string\n"
		"k             Toggle line numbers\n"
		"l             Show full source file location\n"
		"P             Print to [symbol_name].annotation file.\n"
		"r             Run available scripts\n"
		"p             Toggle percent type [local/global]\n"
		"b             Toggle percent base [period/hits]\n"
		"?             Search string backwards\n");
			continue;
		case 'r':
			script_browse(NULL, NULL);
			annotate_browser__show(&browser->b, title, help);
			continue;
		case 'k':
			notes->options->show_linenr = !notes->options->show_linenr;
			continue;
		case 'l':
			annotate_browser__show_full_location (&browser->b);
			continue;
		case 'H':
			nd = browser->curr_hot;
			break;
		case 's':
			if (annotate_browser__toggle_source(browser))
				ui_helpline__puts(help);
			continue;
		case 'o':
			notes->options->use_offset = !notes->options->use_offset;
			annotation__update_column_widths(notes);
			continue;
		case 'O':
			if (++notes->options->offset_level > ANNOTATION__MAX_OFFSET_LEVEL)
				notes->options->offset_level = ANNOTATION__MIN_OFFSET_LEVEL;
			continue;
		case 'j':
			notes->options->jump_arrows = !notes->options->jump_arrows;
			continue;
		case 'J':
			notes->options->show_nr_jumps = !notes->options->show_nr_jumps;
			annotation__update_column_widths(notes);
			continue;
		case '/':
			if (annotate_browser__search(browser, delay_secs)) {
show_help:
				ui_helpline__puts(help);
			}
			continue;
		case 'n':
			if (browser->searching_backwards ?
			    annotate_browser__continue_search_reverse(browser, delay_secs) :
			    annotate_browser__continue_search(browser, delay_secs))
				goto show_help;
			continue;
		case '?':
			if (annotate_browser__search_reverse(browser, delay_secs))
				goto show_help;
			continue;
		case 'D': {
			static int seq;
			ui_helpline__pop();
			ui_helpline__fpush("%d: nr_ent=%d, height=%d, idx=%d, top_idx=%d, nr_asm_entries=%d",
					   seq++, browser->b.nr_entries,
					   browser->b.height,
					   browser->b.index,
					   browser->b.top_idx,
					   notes->nr_asm_entries);
		}
			continue;
		case K_ENTER:
		case K_RIGHT:
		{
			struct disasm_line *dl = disasm_line(browser->selection);

			if (browser->selection == NULL)
				ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
			else if (browser->selection->offset == -1)
				ui_helpline__puts("Actions are only available for assembly lines.");
			else if (!dl->ins.ops)
				goto show_sup_ins;
			else if (ins__is_ret(&dl->ins))
				goto out;
			else if (!(annotate_browser__jump(browser, evsel, hbt) ||
				     annotate_browser__callq(browser, evsel, hbt))) {
show_sup_ins:
				ui_helpline__puts("Actions are only available for function call/return & jump/branch instructions.");
			}
			continue;
		}
		case 'P':
			map_symbol__annotation_dump(ms, evsel, browser->opts);
			continue;
		case 't':
			if (symbol_conf.show_total_period) {
				symbol_conf.show_total_period = false;
				symbol_conf.show_nr_samples = true;
			} else if (symbol_conf.show_nr_samples)
				symbol_conf.show_nr_samples = false;
			else
				symbol_conf.show_total_period = true;
			annotation__update_column_widths(notes);
			continue;
		case 'c':
			if (notes->options->show_minmax_cycle)
				notes->options->show_minmax_cycle = false;
			else
				notes->options->show_minmax_cycle = true;
			annotation__update_column_widths(notes);
			continue;
		case 'p':
		case 'b':
			switch_percent_type(browser->opts, key == 'b');
			hists__scnprintf_title(hists, title, sizeof(title));
			annotate_browser__show(&browser->b, title, help);
			continue;
		case K_LEFT:
		case K_ESC:
		case 'q':
		case CTRL('c'):
			goto out;
		default:
			continue;
		}

		if (nd != NULL)
			annotate_browser__set_rb_top(browser, nd);
	}
out:
	ui_browser__hide(&browser->b);
	return key;
}

int map_symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
			     struct hist_browser_timer *hbt,
			     struct annotation_options *opts)
{
	return symbol__tui_annotate(ms, evsel, hbt, opts);
}

int hist_entry__tui_annotate(struct hist_entry *he, struct evsel *evsel,
			     struct hist_browser_timer *hbt,
			     struct annotation_options *opts)
{
	/* reset abort key so that it can get Ctrl-C as a key */
	SLang_reset_tty();
	SLang_init_tty(0, 0, 0);

	return map_symbol__tui_annotate(&he->ms, evsel, hbt, opts);
}

int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
			 struct hist_browser_timer *hbt,
			 struct annotation_options *opts)
{
	struct symbol *sym = ms->sym;
	struct annotation *notes = symbol__annotation(sym);
	struct annotate_browser browser = {
		.b = {
			.refresh = annotate_browser__refresh,
			.seek	 = ui_browser__list_head_seek,
			.write	 = annotate_browser__write,
			.filter  = disasm_line__filter,
			.extra_title_lines = 1, /* for hists__scnprintf_title() */
			.priv	 = ms,
			.use_navkeypressed = true,
		},
		.opts = opts,
	};
	int ret = -1, err;

	if (sym == NULL)
		return -1;

	if (ms->map->dso->annotate_warned)
		return -1;

	err = symbol__annotate2(ms, evsel, opts, &browser.arch);
	if (err) {
		char msg[BUFSIZ];
		ms->map->dso->annotate_warned = true;
		symbol__strerror_disassemble(ms, err, msg, sizeof(msg));
		ui__error("Couldn't annotate %s:\n%s", sym->name, msg);
		goto out_free_offsets;
	}

	ui_helpline__push("Press ESC to exit");

	browser.b.width = notes->max_line_len;
	browser.b.nr_entries = notes->nr_entries;
	browser.b.entries = &notes->src->source,
	browser.b.width += 18; /* Percentage */

	if (notes->options->hide_src_code)
		ui_browser__init_asm_mode(&browser.b);

	ret = annotate_browser__run(&browser, evsel, hbt);

	annotated_source__purge(notes->src);

out_free_offsets:
	zfree(&notes->offsets);
	return ret;
}