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ACPI / util: cast data to u64 before shifting to fix sign extension
[deliverable/linux.git] / tools / perf / ui / browsers / annotate.c
1 #include "../../util/util.h"
2 #include "../browser.h"
3 #include "../helpline.h"
4 #include "../ui.h"
5 #include "../util.h"
6 #include "../../util/annotate.h"
7 #include "../../util/hist.h"
8 #include "../../util/sort.h"
9 #include "../../util/symbol.h"
10 #include "../../util/evsel.h"
11 #include <pthread.h>
12
13 struct disasm_line_samples {
14 double percent;
15 u64 nr;
16 };
17
18 #define IPC_WIDTH 6
19 #define CYCLES_WIDTH 6
20
21 struct browser_disasm_line {
22 struct rb_node rb_node;
23 u32 idx;
24 int idx_asm;
25 int jump_sources;
26 /*
27 * actual length of this array is saved on the nr_events field
28 * of the struct annotate_browser
29 */
30 struct disasm_line_samples samples[1];
31 };
32
33 static struct annotate_browser_opt {
34 bool hide_src_code,
35 use_offset,
36 jump_arrows,
37 show_linenr,
38 show_nr_jumps,
39 show_total_period;
40 } annotate_browser__opts = {
41 .use_offset = true,
42 .jump_arrows = true,
43 };
44
45 struct annotate_browser {
46 struct ui_browser b;
47 struct rb_root entries;
48 struct rb_node *curr_hot;
49 struct disasm_line *selection;
50 struct disasm_line **offsets;
51 int nr_events;
52 u64 start;
53 int nr_asm_entries;
54 int nr_entries;
55 int max_jump_sources;
56 int nr_jumps;
57 bool searching_backwards;
58 bool have_cycles;
59 u8 addr_width;
60 u8 jumps_width;
61 u8 target_width;
62 u8 min_addr_width;
63 u8 max_addr_width;
64 char search_bf[128];
65 };
66
67 static inline struct browser_disasm_line *disasm_line__browser(struct disasm_line *dl)
68 {
69 return (struct browser_disasm_line *)(dl + 1);
70 }
71
72 static bool disasm_line__filter(struct ui_browser *browser __maybe_unused,
73 void *entry)
74 {
75 if (annotate_browser__opts.hide_src_code) {
76 struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
77 return dl->offset == -1;
78 }
79
80 return false;
81 }
82
83 static int annotate_browser__jumps_percent_color(struct annotate_browser *browser,
84 int nr, bool current)
85 {
86 if (current && (!browser->b.use_navkeypressed || browser->b.navkeypressed))
87 return HE_COLORSET_SELECTED;
88 if (nr == browser->max_jump_sources)
89 return HE_COLORSET_TOP;
90 if (nr > 1)
91 return HE_COLORSET_MEDIUM;
92 return HE_COLORSET_NORMAL;
93 }
94
95 static int annotate_browser__set_jumps_percent_color(struct annotate_browser *browser,
96 int nr, bool current)
97 {
98 int color = annotate_browser__jumps_percent_color(browser, nr, current);
99 return ui_browser__set_color(&browser->b, color);
100 }
101
102 static int annotate_browser__pcnt_width(struct annotate_browser *ab)
103 {
104 int w = 7 * ab->nr_events;
105
106 if (ab->have_cycles)
107 w += IPC_WIDTH + CYCLES_WIDTH;
108 return w;
109 }
110
111 static void annotate_browser__write(struct ui_browser *browser, void *entry, int row)
112 {
113 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
114 struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
115 struct browser_disasm_line *bdl = disasm_line__browser(dl);
116 bool current_entry = ui_browser__is_current_entry(browser, row);
117 bool change_color = (!annotate_browser__opts.hide_src_code &&
118 (!current_entry || (browser->use_navkeypressed &&
119 !browser->navkeypressed)));
120 int width = browser->width, printed;
121 int i, pcnt_width = annotate_browser__pcnt_width(ab);
122 double percent_max = 0.0;
123 char bf[256];
124
125 for (i = 0; i < ab->nr_events; i++) {
126 if (bdl->samples[i].percent > percent_max)
127 percent_max = bdl->samples[i].percent;
128 }
129
130 if (dl->offset != -1 && percent_max != 0.0) {
131 if (percent_max != 0.0) {
132 for (i = 0; i < ab->nr_events; i++) {
133 ui_browser__set_percent_color(browser,
134 bdl->samples[i].percent,
135 current_entry);
136 if (annotate_browser__opts.show_total_period) {
137 ui_browser__printf(browser, "%6" PRIu64 " ",
138 bdl->samples[i].nr);
139 } else {
140 ui_browser__printf(browser, "%6.2f ",
141 bdl->samples[i].percent);
142 }
143 }
144 } else {
145 ui_browser__write_nstring(browser, " ", 7 * ab->nr_events);
146 }
147 } else {
148 ui_browser__set_percent_color(browser, 0, current_entry);
149 ui_browser__write_nstring(browser, " ", 7 * ab->nr_events);
150 }
151 if (ab->have_cycles) {
152 if (dl->ipc)
153 ui_browser__printf(browser, "%*.2f ", IPC_WIDTH - 1, dl->ipc);
154 else
155 ui_browser__write_nstring(browser, " ", IPC_WIDTH);
156 if (dl->cycles)
157 ui_browser__printf(browser, "%*" PRIu64 " ",
158 CYCLES_WIDTH - 1, dl->cycles);
159 else
160 ui_browser__write_nstring(browser, " ", CYCLES_WIDTH);
161 }
162
163 SLsmg_write_char(' ');
164
165 /* The scroll bar isn't being used */
166 if (!browser->navkeypressed)
167 width += 1;
168
169 if (!*dl->line)
170 ui_browser__write_nstring(browser, " ", width - pcnt_width);
171 else if (dl->offset == -1) {
172 if (dl->line_nr && annotate_browser__opts.show_linenr)
173 printed = scnprintf(bf, sizeof(bf), "%-*d ",
174 ab->addr_width + 1, dl->line_nr);
175 else
176 printed = scnprintf(bf, sizeof(bf), "%*s ",
177 ab->addr_width, " ");
178 ui_browser__write_nstring(browser, bf, printed);
179 ui_browser__write_nstring(browser, dl->line, width - printed - pcnt_width + 1);
180 } else {
181 u64 addr = dl->offset;
182 int color = -1;
183
184 if (!annotate_browser__opts.use_offset)
185 addr += ab->start;
186
187 if (!annotate_browser__opts.use_offset) {
188 printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
189 } else {
190 if (bdl->jump_sources) {
191 if (annotate_browser__opts.show_nr_jumps) {
192 int prev;
193 printed = scnprintf(bf, sizeof(bf), "%*d ",
194 ab->jumps_width,
195 bdl->jump_sources);
196 prev = annotate_browser__set_jumps_percent_color(ab, bdl->jump_sources,
197 current_entry);
198 ui_browser__write_nstring(browser, bf, printed);
199 ui_browser__set_color(browser, prev);
200 }
201
202 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
203 ab->target_width, addr);
204 } else {
205 printed = scnprintf(bf, sizeof(bf), "%*s ",
206 ab->addr_width, " ");
207 }
208 }
209
210 if (change_color)
211 color = ui_browser__set_color(browser, HE_COLORSET_ADDR);
212 ui_browser__write_nstring(browser, bf, printed);
213 if (change_color)
214 ui_browser__set_color(browser, color);
215 if (dl->ins && dl->ins->ops->scnprintf) {
216 if (ins__is_jump(dl->ins)) {
217 bool fwd = dl->ops.target.offset > (u64)dl->offset;
218
219 ui_browser__write_graph(browser, fwd ? SLSMG_DARROW_CHAR :
220 SLSMG_UARROW_CHAR);
221 SLsmg_write_char(' ');
222 } else if (ins__is_call(dl->ins)) {
223 ui_browser__write_graph(browser, SLSMG_RARROW_CHAR);
224 SLsmg_write_char(' ');
225 } else {
226 ui_browser__write_nstring(browser, " ", 2);
227 }
228 } else {
229 if (strcmp(dl->name, "retq")) {
230 ui_browser__write_nstring(browser, " ", 2);
231 } else {
232 ui_browser__write_graph(browser, SLSMG_LARROW_CHAR);
233 SLsmg_write_char(' ');
234 }
235 }
236
237 disasm_line__scnprintf(dl, bf, sizeof(bf), !annotate_browser__opts.use_offset);
238 ui_browser__write_nstring(browser, bf, width - pcnt_width - 3 - printed);
239 }
240
241 if (current_entry)
242 ab->selection = dl;
243 }
244
245 static bool disasm_line__is_valid_jump(struct disasm_line *dl, struct symbol *sym)
246 {
247 if (!dl || !dl->ins || !ins__is_jump(dl->ins)
248 || !disasm_line__has_offset(dl)
249 || dl->ops.target.offset >= symbol__size(sym))
250 return false;
251
252 return true;
253 }
254
255 static void annotate_browser__draw_current_jump(struct ui_browser *browser)
256 {
257 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
258 struct disasm_line *cursor = ab->selection, *target;
259 struct browser_disasm_line *btarget, *bcursor;
260 unsigned int from, to;
261 struct map_symbol *ms = ab->b.priv;
262 struct symbol *sym = ms->sym;
263 u8 pcnt_width = annotate_browser__pcnt_width(ab);
264
265 /* PLT symbols contain external offsets */
266 if (strstr(sym->name, "@plt"))
267 return;
268
269 if (!disasm_line__is_valid_jump(cursor, sym))
270 return;
271
272 target = ab->offsets[cursor->ops.target.offset];
273 if (!target)
274 return;
275
276 bcursor = disasm_line__browser(cursor);
277 btarget = disasm_line__browser(target);
278
279 if (annotate_browser__opts.hide_src_code) {
280 from = bcursor->idx_asm;
281 to = btarget->idx_asm;
282 } else {
283 from = (u64)bcursor->idx;
284 to = (u64)btarget->idx;
285 }
286
287 ui_browser__set_color(browser, HE_COLORSET_CODE);
288 __ui_browser__line_arrow(browser, pcnt_width + 2 + ab->addr_width,
289 from, to);
290 }
291
292 static unsigned int annotate_browser__refresh(struct ui_browser *browser)
293 {
294 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
295 int ret = ui_browser__list_head_refresh(browser);
296 int pcnt_width = annotate_browser__pcnt_width(ab);
297
298 if (annotate_browser__opts.jump_arrows)
299 annotate_browser__draw_current_jump(browser);
300
301 ui_browser__set_color(browser, HE_COLORSET_NORMAL);
302 __ui_browser__vline(browser, pcnt_width, 0, browser->height - 1);
303 return ret;
304 }
305
306 static int disasm__cmp(struct browser_disasm_line *a,
307 struct browser_disasm_line *b, int nr_pcnt)
308 {
309 int i;
310
311 for (i = 0; i < nr_pcnt; i++) {
312 if (a->samples[i].percent == b->samples[i].percent)
313 continue;
314 return a->samples[i].percent < b->samples[i].percent;
315 }
316 return 0;
317 }
318
319 static void disasm_rb_tree__insert(struct rb_root *root, struct browser_disasm_line *bdl,
320 int nr_events)
321 {
322 struct rb_node **p = &root->rb_node;
323 struct rb_node *parent = NULL;
324 struct browser_disasm_line *l;
325
326 while (*p != NULL) {
327 parent = *p;
328 l = rb_entry(parent, struct browser_disasm_line, rb_node);
329
330 if (disasm__cmp(bdl, l, nr_events))
331 p = &(*p)->rb_left;
332 else
333 p = &(*p)->rb_right;
334 }
335 rb_link_node(&bdl->rb_node, parent, p);
336 rb_insert_color(&bdl->rb_node, root);
337 }
338
339 static void annotate_browser__set_top(struct annotate_browser *browser,
340 struct disasm_line *pos, u32 idx)
341 {
342 unsigned back;
343
344 ui_browser__refresh_dimensions(&browser->b);
345 back = browser->b.height / 2;
346 browser->b.top_idx = browser->b.index = idx;
347
348 while (browser->b.top_idx != 0 && back != 0) {
349 pos = list_entry(pos->node.prev, struct disasm_line, node);
350
351 if (disasm_line__filter(&browser->b, &pos->node))
352 continue;
353
354 --browser->b.top_idx;
355 --back;
356 }
357
358 browser->b.top = pos;
359 browser->b.navkeypressed = true;
360 }
361
362 static void annotate_browser__set_rb_top(struct annotate_browser *browser,
363 struct rb_node *nd)
364 {
365 struct browser_disasm_line *bpos;
366 struct disasm_line *pos;
367 u32 idx;
368
369 bpos = rb_entry(nd, struct browser_disasm_line, rb_node);
370 pos = ((struct disasm_line *)bpos) - 1;
371 idx = bpos->idx;
372 if (annotate_browser__opts.hide_src_code)
373 idx = bpos->idx_asm;
374 annotate_browser__set_top(browser, pos, idx);
375 browser->curr_hot = nd;
376 }
377
378 static void annotate_browser__calc_percent(struct annotate_browser *browser,
379 struct perf_evsel *evsel)
380 {
381 struct map_symbol *ms = browser->b.priv;
382 struct symbol *sym = ms->sym;
383 struct annotation *notes = symbol__annotation(sym);
384 struct disasm_line *pos, *next;
385 s64 len = symbol__size(sym);
386
387 browser->entries = RB_ROOT;
388
389 pthread_mutex_lock(&notes->lock);
390
391 list_for_each_entry(pos, &notes->src->source, node) {
392 struct browser_disasm_line *bpos = disasm_line__browser(pos);
393 const char *path = NULL;
394 double max_percent = 0.0;
395 int i;
396
397 if (pos->offset == -1) {
398 RB_CLEAR_NODE(&bpos->rb_node);
399 continue;
400 }
401
402 next = disasm__get_next_ip_line(&notes->src->source, pos);
403
404 for (i = 0; i < browser->nr_events; i++) {
405 u64 nr_samples;
406
407 bpos->samples[i].percent = disasm__calc_percent(notes,
408 evsel->idx + i,
409 pos->offset,
410 next ? next->offset : len,
411 &path, &nr_samples);
412 bpos->samples[i].nr = nr_samples;
413
414 if (max_percent < bpos->samples[i].percent)
415 max_percent = bpos->samples[i].percent;
416 }
417
418 if (max_percent < 0.01 && pos->ipc == 0) {
419 RB_CLEAR_NODE(&bpos->rb_node);
420 continue;
421 }
422 disasm_rb_tree__insert(&browser->entries, bpos,
423 browser->nr_events);
424 }
425 pthread_mutex_unlock(&notes->lock);
426
427 browser->curr_hot = rb_last(&browser->entries);
428 }
429
430 static bool annotate_browser__toggle_source(struct annotate_browser *browser)
431 {
432 struct disasm_line *dl;
433 struct browser_disasm_line *bdl;
434 off_t offset = browser->b.index - browser->b.top_idx;
435
436 browser->b.seek(&browser->b, offset, SEEK_CUR);
437 dl = list_entry(browser->b.top, struct disasm_line, node);
438 bdl = disasm_line__browser(dl);
439
440 if (annotate_browser__opts.hide_src_code) {
441 if (bdl->idx_asm < offset)
442 offset = bdl->idx;
443
444 browser->b.nr_entries = browser->nr_entries;
445 annotate_browser__opts.hide_src_code = false;
446 browser->b.seek(&browser->b, -offset, SEEK_CUR);
447 browser->b.top_idx = bdl->idx - offset;
448 browser->b.index = bdl->idx;
449 } else {
450 if (bdl->idx_asm < 0) {
451 ui_helpline__puts("Only available for assembly lines.");
452 browser->b.seek(&browser->b, -offset, SEEK_CUR);
453 return false;
454 }
455
456 if (bdl->idx_asm < offset)
457 offset = bdl->idx_asm;
458
459 browser->b.nr_entries = browser->nr_asm_entries;
460 annotate_browser__opts.hide_src_code = true;
461 browser->b.seek(&browser->b, -offset, SEEK_CUR);
462 browser->b.top_idx = bdl->idx_asm - offset;
463 browser->b.index = bdl->idx_asm;
464 }
465
466 return true;
467 }
468
469 static void annotate_browser__init_asm_mode(struct annotate_browser *browser)
470 {
471 ui_browser__reset_index(&browser->b);
472 browser->b.nr_entries = browser->nr_asm_entries;
473 }
474
475 #define SYM_TITLE_MAX_SIZE (PATH_MAX + 64)
476
477 static int sym_title(struct symbol *sym, struct map *map, char *title,
478 size_t sz)
479 {
480 return snprintf(title, sz, "%s %s", sym->name, map->dso->long_name);
481 }
482
483 static bool annotate_browser__callq(struct annotate_browser *browser,
484 struct perf_evsel *evsel,
485 struct hist_browser_timer *hbt)
486 {
487 struct map_symbol *ms = browser->b.priv;
488 struct disasm_line *dl = browser->selection;
489 struct annotation *notes;
490 struct addr_map_symbol target = {
491 .map = ms->map,
492 .addr = map__objdump_2mem(ms->map, dl->ops.target.addr),
493 };
494 char title[SYM_TITLE_MAX_SIZE];
495
496 if (!ins__is_call(dl->ins))
497 return false;
498
499 if (map_groups__find_ams(&target, NULL) ||
500 map__rip_2objdump(target.map, target.map->map_ip(target.map,
501 target.addr)) !=
502 dl->ops.target.addr) {
503 ui_helpline__puts("The called function was not found.");
504 return true;
505 }
506
507 notes = symbol__annotation(target.sym);
508 pthread_mutex_lock(&notes->lock);
509
510 if (notes->src == NULL && symbol__alloc_hist(target.sym) < 0) {
511 pthread_mutex_unlock(&notes->lock);
512 ui__warning("Not enough memory for annotating '%s' symbol!\n",
513 target.sym->name);
514 return true;
515 }
516
517 pthread_mutex_unlock(&notes->lock);
518 symbol__tui_annotate(target.sym, target.map, evsel, hbt);
519 sym_title(ms->sym, ms->map, title, sizeof(title));
520 ui_browser__show_title(&browser->b, title);
521 return true;
522 }
523
524 static
525 struct disasm_line *annotate_browser__find_offset(struct annotate_browser *browser,
526 s64 offset, s64 *idx)
527 {
528 struct map_symbol *ms = browser->b.priv;
529 struct symbol *sym = ms->sym;
530 struct annotation *notes = symbol__annotation(sym);
531 struct disasm_line *pos;
532
533 *idx = 0;
534 list_for_each_entry(pos, &notes->src->source, node) {
535 if (pos->offset == offset)
536 return pos;
537 if (!disasm_line__filter(&browser->b, &pos->node))
538 ++*idx;
539 }
540
541 return NULL;
542 }
543
544 static bool annotate_browser__jump(struct annotate_browser *browser)
545 {
546 struct disasm_line *dl = browser->selection;
547 s64 idx;
548
549 if (!ins__is_jump(dl->ins))
550 return false;
551
552 dl = annotate_browser__find_offset(browser, dl->ops.target.offset, &idx);
553 if (dl == NULL) {
554 ui_helpline__puts("Invalid jump offset");
555 return true;
556 }
557
558 annotate_browser__set_top(browser, dl, idx);
559
560 return true;
561 }
562
563 static
564 struct disasm_line *annotate_browser__find_string(struct annotate_browser *browser,
565 char *s, s64 *idx)
566 {
567 struct map_symbol *ms = browser->b.priv;
568 struct symbol *sym = ms->sym;
569 struct annotation *notes = symbol__annotation(sym);
570 struct disasm_line *pos = browser->selection;
571
572 *idx = browser->b.index;
573 list_for_each_entry_continue(pos, &notes->src->source, node) {
574 if (disasm_line__filter(&browser->b, &pos->node))
575 continue;
576
577 ++*idx;
578
579 if (pos->line && strstr(pos->line, s) != NULL)
580 return pos;
581 }
582
583 return NULL;
584 }
585
586 static bool __annotate_browser__search(struct annotate_browser *browser)
587 {
588 struct disasm_line *dl;
589 s64 idx;
590
591 dl = annotate_browser__find_string(browser, browser->search_bf, &idx);
592 if (dl == NULL) {
593 ui_helpline__puts("String not found!");
594 return false;
595 }
596
597 annotate_browser__set_top(browser, dl, idx);
598 browser->searching_backwards = false;
599 return true;
600 }
601
602 static
603 struct disasm_line *annotate_browser__find_string_reverse(struct annotate_browser *browser,
604 char *s, s64 *idx)
605 {
606 struct map_symbol *ms = browser->b.priv;
607 struct symbol *sym = ms->sym;
608 struct annotation *notes = symbol__annotation(sym);
609 struct disasm_line *pos = browser->selection;
610
611 *idx = browser->b.index;
612 list_for_each_entry_continue_reverse(pos, &notes->src->source, node) {
613 if (disasm_line__filter(&browser->b, &pos->node))
614 continue;
615
616 --*idx;
617
618 if (pos->line && strstr(pos->line, s) != NULL)
619 return pos;
620 }
621
622 return NULL;
623 }
624
625 static bool __annotate_browser__search_reverse(struct annotate_browser *browser)
626 {
627 struct disasm_line *dl;
628 s64 idx;
629
630 dl = annotate_browser__find_string_reverse(browser, browser->search_bf, &idx);
631 if (dl == NULL) {
632 ui_helpline__puts("String not found!");
633 return false;
634 }
635
636 annotate_browser__set_top(browser, dl, idx);
637 browser->searching_backwards = true;
638 return true;
639 }
640
641 static bool annotate_browser__search_window(struct annotate_browser *browser,
642 int delay_secs)
643 {
644 if (ui_browser__input_window("Search", "String: ", browser->search_bf,
645 "ENTER: OK, ESC: Cancel",
646 delay_secs * 2) != K_ENTER ||
647 !*browser->search_bf)
648 return false;
649
650 return true;
651 }
652
653 static bool annotate_browser__search(struct annotate_browser *browser, int delay_secs)
654 {
655 if (annotate_browser__search_window(browser, delay_secs))
656 return __annotate_browser__search(browser);
657
658 return false;
659 }
660
661 static bool annotate_browser__continue_search(struct annotate_browser *browser,
662 int delay_secs)
663 {
664 if (!*browser->search_bf)
665 return annotate_browser__search(browser, delay_secs);
666
667 return __annotate_browser__search(browser);
668 }
669
670 static bool annotate_browser__search_reverse(struct annotate_browser *browser,
671 int delay_secs)
672 {
673 if (annotate_browser__search_window(browser, delay_secs))
674 return __annotate_browser__search_reverse(browser);
675
676 return false;
677 }
678
679 static
680 bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,
681 int delay_secs)
682 {
683 if (!*browser->search_bf)
684 return annotate_browser__search_reverse(browser, delay_secs);
685
686 return __annotate_browser__search_reverse(browser);
687 }
688
689 static void annotate_browser__update_addr_width(struct annotate_browser *browser)
690 {
691 if (annotate_browser__opts.use_offset)
692 browser->target_width = browser->min_addr_width;
693 else
694 browser->target_width = browser->max_addr_width;
695
696 browser->addr_width = browser->target_width;
697
698 if (annotate_browser__opts.show_nr_jumps)
699 browser->addr_width += browser->jumps_width + 1;
700 }
701
702 static int annotate_browser__run(struct annotate_browser *browser,
703 struct perf_evsel *evsel,
704 struct hist_browser_timer *hbt)
705 {
706 struct rb_node *nd = NULL;
707 struct map_symbol *ms = browser->b.priv;
708 struct symbol *sym = ms->sym;
709 const char *help = "Press 'h' for help on key bindings";
710 int delay_secs = hbt ? hbt->refresh : 0;
711 int key;
712 char title[SYM_TITLE_MAX_SIZE];
713
714 sym_title(sym, ms->map, title, sizeof(title));
715 if (ui_browser__show(&browser->b, title, help) < 0)
716 return -1;
717
718 annotate_browser__calc_percent(browser, evsel);
719
720 if (browser->curr_hot) {
721 annotate_browser__set_rb_top(browser, browser->curr_hot);
722 browser->b.navkeypressed = false;
723 }
724
725 nd = browser->curr_hot;
726
727 while (1) {
728 key = ui_browser__run(&browser->b, delay_secs);
729
730 if (delay_secs != 0) {
731 annotate_browser__calc_percent(browser, evsel);
732 /*
733 * Current line focus got out of the list of most active
734 * lines, NULL it so that if TAB|UNTAB is pressed, we
735 * move to curr_hot (current hottest line).
736 */
737 if (nd != NULL && RB_EMPTY_NODE(nd))
738 nd = NULL;
739 }
740
741 switch (key) {
742 case K_TIMER:
743 if (hbt)
744 hbt->timer(hbt->arg);
745
746 if (delay_secs != 0)
747 symbol__annotate_decay_histogram(sym, evsel->idx);
748 continue;
749 case K_TAB:
750 if (nd != NULL) {
751 nd = rb_prev(nd);
752 if (nd == NULL)
753 nd = rb_last(&browser->entries);
754 } else
755 nd = browser->curr_hot;
756 break;
757 case K_UNTAB:
758 if (nd != NULL) {
759 nd = rb_next(nd);
760 if (nd == NULL)
761 nd = rb_first(&browser->entries);
762 } else
763 nd = browser->curr_hot;
764 break;
765 case K_F1:
766 case 'h':
767 ui_browser__help_window(&browser->b,
768 "UP/DOWN/PGUP\n"
769 "PGDN/SPACE Navigate\n"
770 "q/ESC/CTRL+C Exit\n\n"
771 "ENTER Go to target\n"
772 "ESC Exit\n"
773 "H Cycle thru hottest instructions\n"
774 "j Toggle showing jump to target arrows\n"
775 "J Toggle showing number of jump sources on targets\n"
776 "n Search next string\n"
777 "o Toggle disassembler output/simplified view\n"
778 "s Toggle source code view\n"
779 "t Toggle total period view\n"
780 "/ Search string\n"
781 "k Toggle line numbers\n"
782 "r Run available scripts\n"
783 "? Search string backwards\n");
784 continue;
785 case 'r':
786 {
787 script_browse(NULL);
788 continue;
789 }
790 case 'k':
791 annotate_browser__opts.show_linenr =
792 !annotate_browser__opts.show_linenr;
793 break;
794 case 'H':
795 nd = browser->curr_hot;
796 break;
797 case 's':
798 if (annotate_browser__toggle_source(browser))
799 ui_helpline__puts(help);
800 continue;
801 case 'o':
802 annotate_browser__opts.use_offset = !annotate_browser__opts.use_offset;
803 annotate_browser__update_addr_width(browser);
804 continue;
805 case 'j':
806 annotate_browser__opts.jump_arrows = !annotate_browser__opts.jump_arrows;
807 continue;
808 case 'J':
809 annotate_browser__opts.show_nr_jumps = !annotate_browser__opts.show_nr_jumps;
810 annotate_browser__update_addr_width(browser);
811 continue;
812 case '/':
813 if (annotate_browser__search(browser, delay_secs)) {
814 show_help:
815 ui_helpline__puts(help);
816 }
817 continue;
818 case 'n':
819 if (browser->searching_backwards ?
820 annotate_browser__continue_search_reverse(browser, delay_secs) :
821 annotate_browser__continue_search(browser, delay_secs))
822 goto show_help;
823 continue;
824 case '?':
825 if (annotate_browser__search_reverse(browser, delay_secs))
826 goto show_help;
827 continue;
828 case 'D': {
829 static int seq;
830 ui_helpline__pop();
831 ui_helpline__fpush("%d: nr_ent=%d, height=%d, idx=%d, top_idx=%d, nr_asm_entries=%d",
832 seq++, browser->b.nr_entries,
833 browser->b.height,
834 browser->b.index,
835 browser->b.top_idx,
836 browser->nr_asm_entries);
837 }
838 continue;
839 case K_ENTER:
840 case K_RIGHT:
841 if (browser->selection == NULL)
842 ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
843 else if (browser->selection->offset == -1)
844 ui_helpline__puts("Actions are only available for assembly lines.");
845 else if (!browser->selection->ins) {
846 if (strcmp(browser->selection->name, "retq"))
847 goto show_sup_ins;
848 goto out;
849 } else if (!(annotate_browser__jump(browser) ||
850 annotate_browser__callq(browser, evsel, hbt))) {
851 show_sup_ins:
852 ui_helpline__puts("Actions are only available for 'callq', 'retq' & jump instructions.");
853 }
854 continue;
855 case 't':
856 annotate_browser__opts.show_total_period =
857 !annotate_browser__opts.show_total_period;
858 annotate_browser__update_addr_width(browser);
859 continue;
860 case K_LEFT:
861 case K_ESC:
862 case 'q':
863 case CTRL('c'):
864 goto out;
865 default:
866 continue;
867 }
868
869 if (nd != NULL)
870 annotate_browser__set_rb_top(browser, nd);
871 }
872 out:
873 ui_browser__hide(&browser->b);
874 return key;
875 }
876
877 int map_symbol__tui_annotate(struct map_symbol *ms, struct perf_evsel *evsel,
878 struct hist_browser_timer *hbt)
879 {
880 /* Set default value for show_total_period. */
881 annotate_browser__opts.show_total_period =
882 symbol_conf.show_total_period;
883
884 return symbol__tui_annotate(ms->sym, ms->map, evsel, hbt);
885 }
886
887 int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
888 struct hist_browser_timer *hbt)
889 {
890 /* reset abort key so that it can get Ctrl-C as a key */
891 SLang_reset_tty();
892 SLang_init_tty(0, 0, 0);
893
894 return map_symbol__tui_annotate(&he->ms, evsel, hbt);
895 }
896
897
898 static unsigned count_insn(struct annotate_browser *browser, u64 start, u64 end)
899 {
900 unsigned n_insn = 0;
901 u64 offset;
902
903 for (offset = start; offset <= end; offset++) {
904 if (browser->offsets[offset])
905 n_insn++;
906 }
907 return n_insn;
908 }
909
910 static void count_and_fill(struct annotate_browser *browser, u64 start, u64 end,
911 struct cyc_hist *ch)
912 {
913 unsigned n_insn;
914 u64 offset;
915
916 n_insn = count_insn(browser, start, end);
917 if (n_insn && ch->num && ch->cycles) {
918 float ipc = n_insn / ((double)ch->cycles / (double)ch->num);
919
920 /* Hide data when there are too many overlaps. */
921 if (ch->reset >= 0x7fff || ch->reset >= ch->num / 2)
922 return;
923
924 for (offset = start; offset <= end; offset++) {
925 struct disasm_line *dl = browser->offsets[offset];
926
927 if (dl)
928 dl->ipc = ipc;
929 }
930 }
931 }
932
933 /*
934 * This should probably be in util/annotate.c to share with the tty
935 * annotate, but right now we need the per byte offsets arrays,
936 * which are only here.
937 */
938 static void annotate__compute_ipc(struct annotate_browser *browser, size_t size,
939 struct symbol *sym)
940 {
941 u64 offset;
942 struct annotation *notes = symbol__annotation(sym);
943
944 if (!notes->src || !notes->src->cycles_hist)
945 return;
946
947 pthread_mutex_lock(&notes->lock);
948 for (offset = 0; offset < size; ++offset) {
949 struct cyc_hist *ch;
950
951 ch = &notes->src->cycles_hist[offset];
952 if (ch && ch->cycles) {
953 struct disasm_line *dl;
954
955 if (ch->have_start)
956 count_and_fill(browser, ch->start, offset, ch);
957 dl = browser->offsets[offset];
958 if (dl && ch->num_aggr)
959 dl->cycles = ch->cycles_aggr / ch->num_aggr;
960 browser->have_cycles = true;
961 }
962 }
963 pthread_mutex_unlock(&notes->lock);
964 }
965
966 static void annotate_browser__mark_jump_targets(struct annotate_browser *browser,
967 size_t size)
968 {
969 u64 offset;
970 struct map_symbol *ms = browser->b.priv;
971 struct symbol *sym = ms->sym;
972
973 /* PLT symbols contain external offsets */
974 if (strstr(sym->name, "@plt"))
975 return;
976
977 for (offset = 0; offset < size; ++offset) {
978 struct disasm_line *dl = browser->offsets[offset], *dlt;
979 struct browser_disasm_line *bdlt;
980
981 if (!disasm_line__is_valid_jump(dl, sym))
982 continue;
983
984 dlt = browser->offsets[dl->ops.target.offset];
985 /*
986 * FIXME: Oops, no jump target? Buggy disassembler? Or do we
987 * have to adjust to the previous offset?
988 */
989 if (dlt == NULL)
990 continue;
991
992 bdlt = disasm_line__browser(dlt);
993 if (++bdlt->jump_sources > browser->max_jump_sources)
994 browser->max_jump_sources = bdlt->jump_sources;
995
996 ++browser->nr_jumps;
997 }
998 }
999
1000 static inline int width_jumps(int n)
1001 {
1002 if (n >= 100)
1003 return 5;
1004 if (n / 10)
1005 return 2;
1006 return 1;
1007 }
1008
1009 int symbol__tui_annotate(struct symbol *sym, struct map *map,
1010 struct perf_evsel *evsel,
1011 struct hist_browser_timer *hbt)
1012 {
1013 struct disasm_line *pos, *n;
1014 struct annotation *notes;
1015 size_t size;
1016 struct map_symbol ms = {
1017 .map = map,
1018 .sym = sym,
1019 };
1020 struct annotate_browser browser = {
1021 .b = {
1022 .refresh = annotate_browser__refresh,
1023 .seek = ui_browser__list_head_seek,
1024 .write = annotate_browser__write,
1025 .filter = disasm_line__filter,
1026 .priv = &ms,
1027 .use_navkeypressed = true,
1028 },
1029 };
1030 int ret = -1;
1031 int nr_pcnt = 1;
1032 size_t sizeof_bdl = sizeof(struct browser_disasm_line);
1033
1034 if (sym == NULL)
1035 return -1;
1036
1037 size = symbol__size(sym);
1038
1039 if (map->dso->annotate_warned)
1040 return -1;
1041
1042 browser.offsets = zalloc(size * sizeof(struct disasm_line *));
1043 if (browser.offsets == NULL) {
1044 ui__error("Not enough memory!");
1045 return -1;
1046 }
1047
1048 if (perf_evsel__is_group_event(evsel)) {
1049 nr_pcnt = evsel->nr_members;
1050 sizeof_bdl += sizeof(struct disasm_line_samples) *
1051 (nr_pcnt - 1);
1052 }
1053
1054 if (symbol__annotate(sym, map, sizeof_bdl) < 0) {
1055 ui__error("%s", ui_helpline__last_msg);
1056 goto out_free_offsets;
1057 }
1058
1059 ui_helpline__push("Press ESC to exit");
1060
1061 notes = symbol__annotation(sym);
1062 browser.start = map__rip_2objdump(map, sym->start);
1063
1064 list_for_each_entry(pos, &notes->src->source, node) {
1065 struct browser_disasm_line *bpos;
1066 size_t line_len = strlen(pos->line);
1067
1068 if (browser.b.width < line_len)
1069 browser.b.width = line_len;
1070 bpos = disasm_line__browser(pos);
1071 bpos->idx = browser.nr_entries++;
1072 if (pos->offset != -1) {
1073 bpos->idx_asm = browser.nr_asm_entries++;
1074 /*
1075 * FIXME: short term bandaid to cope with assembly
1076 * routines that comes with labels in the same column
1077 * as the address in objdump, sigh.
1078 *
1079 * E.g. copy_user_generic_unrolled
1080 */
1081 if (pos->offset < (s64)size)
1082 browser.offsets[pos->offset] = pos;
1083 } else
1084 bpos->idx_asm = -1;
1085 }
1086
1087 annotate_browser__mark_jump_targets(&browser, size);
1088 annotate__compute_ipc(&browser, size, sym);
1089
1090 browser.addr_width = browser.target_width = browser.min_addr_width = hex_width(size);
1091 browser.max_addr_width = hex_width(sym->end);
1092 browser.jumps_width = width_jumps(browser.max_jump_sources);
1093 browser.nr_events = nr_pcnt;
1094 browser.b.nr_entries = browser.nr_entries;
1095 browser.b.entries = &notes->src->source,
1096 browser.b.width += 18; /* Percentage */
1097
1098 if (annotate_browser__opts.hide_src_code)
1099 annotate_browser__init_asm_mode(&browser);
1100
1101 annotate_browser__update_addr_width(&browser);
1102
1103 ret = annotate_browser__run(&browser, evsel, hbt);
1104 list_for_each_entry_safe(pos, n, &notes->src->source, node) {
1105 list_del(&pos->node);
1106 disasm_line__free(pos);
1107 }
1108
1109 out_free_offsets:
1110 free(browser.offsets);
1111 return ret;
1112 }
1113
1114 #define ANNOTATE_CFG(n) \
1115 { .name = #n, .value = &annotate_browser__opts.n, }
1116
1117 /*
1118 * Keep the entries sorted, they are bsearch'ed
1119 */
1120 static struct annotate_config {
1121 const char *name;
1122 bool *value;
1123 } annotate__configs[] = {
1124 ANNOTATE_CFG(hide_src_code),
1125 ANNOTATE_CFG(jump_arrows),
1126 ANNOTATE_CFG(show_linenr),
1127 ANNOTATE_CFG(show_nr_jumps),
1128 ANNOTATE_CFG(show_total_period),
1129 ANNOTATE_CFG(use_offset),
1130 };
1131
1132 #undef ANNOTATE_CFG
1133
1134 static int annotate_config__cmp(const void *name, const void *cfgp)
1135 {
1136 const struct annotate_config *cfg = cfgp;
1137
1138 return strcmp(name, cfg->name);
1139 }
1140
1141 static int annotate__config(const char *var, const char *value,
1142 void *data __maybe_unused)
1143 {
1144 struct annotate_config *cfg;
1145 const char *name;
1146
1147 if (prefixcmp(var, "annotate.") != 0)
1148 return 0;
1149
1150 name = var + 9;
1151 cfg = bsearch(name, annotate__configs, ARRAY_SIZE(annotate__configs),
1152 sizeof(struct annotate_config), annotate_config__cmp);
1153
1154 if (cfg == NULL)
1155 ui__warning("%s variable unknown, ignoring...", var);
1156 else
1157 *cfg->value = perf_config_bool(name, value);
1158 return 0;
1159 }
1160
1161 void annotate_browser__init(void)
1162 {
1163 perf_config(annotate__config, NULL);
1164 }
Linux kernel - Deliverables
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