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TOMOYO Linux Cross Reference
Linux/tools/perf/util/annotate.c

Version: ~ [ linux-4.18-rc5 ] ~ [ linux-4.17.6 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.55 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.112 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.140 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.115 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.57 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.27.62 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  3  *
  4  * Parts came from builtin-annotate.c, see those files for further
  5  * copyright notes.
  6  *
  7  * Released under the GPL v2. (and only v2, not any later version)
  8  */
  9 
 10 #include <errno.h>
 11 #include <inttypes.h>
 12 #include "util.h"
 13 #include "ui/ui.h"
 14 #include "sort.h"
 15 #include "build-id.h"
 16 #include "color.h"
 17 #include "config.h"
 18 #include "cache.h"
 19 #include "symbol.h"
 20 #include "units.h"
 21 #include "debug.h"
 22 #include "annotate.h"
 23 #include "evsel.h"
 24 #include "evlist.h"
 25 #include "block-range.h"
 26 #include "string2.h"
 27 #include "arch/common.h"
 28 #include <regex.h>
 29 #include <pthread.h>
 30 #include <linux/bitops.h>
 31 #include <linux/kernel.h>
 32 
 33 /* FIXME: For the HE_COLORSET */
 34 #include "ui/browser.h"
 35 
 36 /*
 37  * FIXME: Using the same values as slang.h,
 38  * but that header may not be available everywhere
 39  */
 40 #define LARROW_CHAR     ((unsigned char)',')
 41 #define RARROW_CHAR     ((unsigned char)'+')
 42 #define DARROW_CHAR     ((unsigned char)'.')
 43 #define UARROW_CHAR     ((unsigned char)'-')
 44 
 45 #include "sane_ctype.h"
 46 
 47 struct annotation_options annotation__default_options = {
 48         .use_offset     = true,
 49         .jump_arrows    = true,
 50         .annotate_src   = true,
 51         .offset_level   = ANNOTATION__OFFSET_JUMP_TARGETS,
 52 };
 53 
 54 static regex_t   file_lineno;
 55 
 56 static struct ins_ops *ins__find(struct arch *arch, const char *name);
 57 static void ins__sort(struct arch *arch);
 58 static int disasm_line__parse(char *line, const char **namep, char **rawp);
 59 
 60 struct arch {
 61         const char      *name;
 62         struct ins      *instructions;
 63         size_t          nr_instructions;
 64         size_t          nr_instructions_allocated;
 65         struct ins_ops  *(*associate_instruction_ops)(struct arch *arch, const char *name);
 66         bool            sorted_instructions;
 67         bool            initialized;
 68         void            *priv;
 69         unsigned int    model;
 70         unsigned int    family;
 71         int             (*init)(struct arch *arch, char *cpuid);
 72         bool            (*ins_is_fused)(struct arch *arch, const char *ins1,
 73                                         const char *ins2);
 74         struct          {
 75                 char comment_char;
 76                 char skip_functions_char;
 77         } objdump;
 78 };
 79 
 80 static struct ins_ops call_ops;
 81 static struct ins_ops dec_ops;
 82 static struct ins_ops jump_ops;
 83 static struct ins_ops mov_ops;
 84 static struct ins_ops nop_ops;
 85 static struct ins_ops lock_ops;
 86 static struct ins_ops ret_ops;
 87 
 88 static int arch__grow_instructions(struct arch *arch)
 89 {
 90         struct ins *new_instructions;
 91         size_t new_nr_allocated;
 92 
 93         if (arch->nr_instructions_allocated == 0 && arch->instructions)
 94                 goto grow_from_non_allocated_table;
 95 
 96         new_nr_allocated = arch->nr_instructions_allocated + 128;
 97         new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
 98         if (new_instructions == NULL)
 99                 return -1;
100 
101 out_update_instructions:
102         arch->instructions = new_instructions;
103         arch->nr_instructions_allocated = new_nr_allocated;
104         return 0;
105 
106 grow_from_non_allocated_table:
107         new_nr_allocated = arch->nr_instructions + 128;
108         new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
109         if (new_instructions == NULL)
110                 return -1;
111 
112         memcpy(new_instructions, arch->instructions, arch->nr_instructions);
113         goto out_update_instructions;
114 }
115 
116 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
117 {
118         struct ins *ins;
119 
120         if (arch->nr_instructions == arch->nr_instructions_allocated &&
121             arch__grow_instructions(arch))
122                 return -1;
123 
124         ins = &arch->instructions[arch->nr_instructions];
125         ins->name = strdup(name);
126         if (!ins->name)
127                 return -1;
128 
129         ins->ops  = ops;
130         arch->nr_instructions++;
131 
132         ins__sort(arch);
133         return 0;
134 }
135 
136 #include "arch/arm/annotate/instructions.c"
137 #include "arch/arm64/annotate/instructions.c"
138 #include "arch/x86/annotate/instructions.c"
139 #include "arch/powerpc/annotate/instructions.c"
140 #include "arch/s390/annotate/instructions.c"
141 
142 static struct arch architectures[] = {
143         {
144                 .name = "arm",
145                 .init = arm__annotate_init,
146         },
147         {
148                 .name = "arm64",
149                 .init = arm64__annotate_init,
150         },
151         {
152                 .name = "x86",
153                 .init = x86__annotate_init,
154                 .instructions = x86__instructions,
155                 .nr_instructions = ARRAY_SIZE(x86__instructions),
156                 .ins_is_fused = x86__ins_is_fused,
157                 .objdump =  {
158                         .comment_char = '#',
159                 },
160         },
161         {
162                 .name = "powerpc",
163                 .init = powerpc__annotate_init,
164         },
165         {
166                 .name = "s390",
167                 .init = s390__annotate_init,
168                 .objdump =  {
169                         .comment_char = '#',
170                 },
171         },
172 };
173 
174 static void ins__delete(struct ins_operands *ops)
175 {
176         if (ops == NULL)
177                 return;
178         zfree(&ops->source.raw);
179         zfree(&ops->source.name);
180         zfree(&ops->target.raw);
181         zfree(&ops->target.name);
182 }
183 
184 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
185                               struct ins_operands *ops)
186 {
187         return scnprintf(bf, size, "%-6s %s", ins->name, ops->raw);
188 }
189 
190 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
191                   struct ins_operands *ops)
192 {
193         if (ins->ops->scnprintf)
194                 return ins->ops->scnprintf(ins, bf, size, ops);
195 
196         return ins__raw_scnprintf(ins, bf, size, ops);
197 }
198 
199 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2)
200 {
201         if (!arch || !arch->ins_is_fused)
202                 return false;
203 
204         return arch->ins_is_fused(arch, ins1, ins2);
205 }
206 
207 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
208 {
209         char *endptr, *tok, *name;
210         struct map *map = ms->map;
211         struct addr_map_symbol target = {
212                 .map = map,
213         };
214 
215         ops->target.addr = strtoull(ops->raw, &endptr, 16);
216 
217         name = strchr(endptr, '<');
218         if (name == NULL)
219                 goto indirect_call;
220 
221         name++;
222 
223         if (arch->objdump.skip_functions_char &&
224             strchr(name, arch->objdump.skip_functions_char))
225                 return -1;
226 
227         tok = strchr(name, '>');
228         if (tok == NULL)
229                 return -1;
230 
231         *tok = '\0';
232         ops->target.name = strdup(name);
233         *tok = '>';
234 
235         if (ops->target.name == NULL)
236                 return -1;
237 find_target:
238         target.addr = map__objdump_2mem(map, ops->target.addr);
239 
240         if (map_groups__find_ams(&target) == 0 &&
241             map__rip_2objdump(target.map, map->map_ip(target.map, target.addr)) == ops->target.addr)
242                 ops->target.sym = target.sym;
243 
244         return 0;
245 
246 indirect_call:
247         tok = strchr(endptr, '*');
248         if (tok != NULL)
249                 ops->target.addr = strtoull(tok + 1, NULL, 16);
250         goto find_target;
251 }
252 
253 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
254                            struct ins_operands *ops)
255 {
256         if (ops->target.sym)
257                 return scnprintf(bf, size, "%-6s %s", ins->name, ops->target.sym->name);
258 
259         if (ops->target.addr == 0)
260                 return ins__raw_scnprintf(ins, bf, size, ops);
261 
262         if (ops->target.name)
263                 return scnprintf(bf, size, "%-6s %s", ins->name, ops->target.name);
264 
265         return scnprintf(bf, size, "%-6s *%" PRIx64, ins->name, ops->target.addr);
266 }
267 
268 static struct ins_ops call_ops = {
269         .parse     = call__parse,
270         .scnprintf = call__scnprintf,
271 };
272 
273 bool ins__is_call(const struct ins *ins)
274 {
275         return ins->ops == &call_ops || ins->ops == &s390_call_ops;
276 }
277 
278 static int jump__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms)
279 {
280         struct map *map = ms->map;
281         struct symbol *sym = ms->sym;
282         struct addr_map_symbol target = {
283                 .map = map,
284         };
285         const char *c = strchr(ops->raw, ',');
286         u64 start, end;
287         /*
288          * Examples of lines to parse for the _cpp_lex_token@@Base
289          * function:
290          *
291          * 1159e6c: jne    115aa32 <_cpp_lex_token@@Base+0xf92>
292          * 1159e8b: jne    c469be <cpp_named_operator2name@@Base+0xa72>
293          *
294          * The first is a jump to an offset inside the same function,
295          * the second is to another function, i.e. that 0xa72 is an
296          * offset in the cpp_named_operator2name@@base function.
297          */
298         /*
299          * skip over possible up to 2 operands to get to address, e.g.:
300          * tbnz  w0, #26, ffff0000083cd190 <security_file_permission+0xd0>
301          */
302         if (c++ != NULL) {
303                 ops->target.addr = strtoull(c, NULL, 16);
304                 if (!ops->target.addr) {
305                         c = strchr(c, ',');
306                         if (c++ != NULL)
307                                 ops->target.addr = strtoull(c, NULL, 16);
308                 }
309         } else {
310                 ops->target.addr = strtoull(ops->raw, NULL, 16);
311         }
312 
313         target.addr = map__objdump_2mem(map, ops->target.addr);
314         start = map->unmap_ip(map, sym->start),
315         end = map->unmap_ip(map, sym->end);
316 
317         ops->target.outside = target.addr < start || target.addr > end;
318 
319         /*
320          * FIXME: things like this in _cpp_lex_token (gcc's cc1 program):
321 
322                 cpp_named_operator2name@@Base+0xa72
323 
324          * Point to a place that is after the cpp_named_operator2name
325          * boundaries, i.e.  in the ELF symbol table for cc1
326          * cpp_named_operator2name is marked as being 32-bytes long, but it in
327          * fact is much larger than that, so we seem to need a symbols__find()
328          * routine that looks for >= current->start and  < next_symbol->start,
329          * possibly just for C++ objects?
330          *
331          * For now lets just make some progress by marking jumps to outside the
332          * current function as call like.
333          *
334          * Actual navigation will come next, with further understanding of how
335          * the symbol searching and disassembly should be done.
336          */
337         if (map_groups__find_ams(&target) == 0 &&
338             map__rip_2objdump(target.map, map->map_ip(target.map, target.addr)) == ops->target.addr)
339                 ops->target.sym = target.sym;
340 
341         if (!ops->target.outside) {
342                 ops->target.offset = target.addr - start;
343                 ops->target.offset_avail = true;
344         } else {
345                 ops->target.offset_avail = false;
346         }
347 
348         return 0;
349 }
350 
351 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
352                            struct ins_operands *ops)
353 {
354         const char *c;
355 
356         if (!ops->target.addr || ops->target.offset < 0)
357                 return ins__raw_scnprintf(ins, bf, size, ops);
358 
359         if (ops->target.outside && ops->target.sym != NULL)
360                 return scnprintf(bf, size, "%-6s %s", ins->name, ops->target.sym->name);
361 
362         c = strchr(ops->raw, ',');
363         if (c != NULL) {
364                 const char *c2 = strchr(c + 1, ',');
365 
366                 /* check for 3-op insn */
367                 if (c2 != NULL)
368                         c = c2;
369                 c++;
370 
371                 /* mirror arch objdump's space-after-comma style */
372                 if (*c == ' ')
373                         c++;
374         }
375 
376         return scnprintf(bf, size, "%-6s %.*s%" PRIx64,
377                          ins->name, c ? c - ops->raw : 0, ops->raw,
378                          ops->target.offset);
379 }
380 
381 static struct ins_ops jump_ops = {
382         .parse     = jump__parse,
383         .scnprintf = jump__scnprintf,
384 };
385 
386 bool ins__is_jump(const struct ins *ins)
387 {
388         return ins->ops == &jump_ops;
389 }
390 
391 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
392 {
393         char *endptr, *name, *t;
394 
395         if (strstr(raw, "(%rip)") == NULL)
396                 return 0;
397 
398         *addrp = strtoull(comment, &endptr, 16);
399         if (endptr == comment)
400                 return 0;
401         name = strchr(endptr, '<');
402         if (name == NULL)
403                 return -1;
404 
405         name++;
406 
407         t = strchr(name, '>');
408         if (t == NULL)
409                 return 0;
410 
411         *t = '\0';
412         *namep = strdup(name);
413         *t = '>';
414 
415         return 0;
416 }
417 
418 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
419 {
420         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
421         if (ops->locked.ops == NULL)
422                 return 0;
423 
424         if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
425                 goto out_free_ops;
426 
427         ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
428 
429         if (ops->locked.ins.ops == NULL)
430                 goto out_free_ops;
431 
432         if (ops->locked.ins.ops->parse &&
433             ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0)
434                 goto out_free_ops;
435 
436         return 0;
437 
438 out_free_ops:
439         zfree(&ops->locked.ops);
440         return 0;
441 }
442 
443 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
444                            struct ins_operands *ops)
445 {
446         int printed;
447 
448         if (ops->locked.ins.ops == NULL)
449                 return ins__raw_scnprintf(ins, bf, size, ops);
450 
451         printed = scnprintf(bf, size, "%-6s ", ins->name);
452         return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
453                                         size - printed, ops->locked.ops);
454 }
455 
456 static void lock__delete(struct ins_operands *ops)
457 {
458         struct ins *ins = &ops->locked.ins;
459 
460         if (ins->ops && ins->ops->free)
461                 ins->ops->free(ops->locked.ops);
462         else
463                 ins__delete(ops->locked.ops);
464 
465         zfree(&ops->locked.ops);
466         zfree(&ops->target.raw);
467         zfree(&ops->target.name);
468 }
469 
470 static struct ins_ops lock_ops = {
471         .free      = lock__delete,
472         .parse     = lock__parse,
473         .scnprintf = lock__scnprintf,
474 };
475 
476 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
477 {
478         char *s = strchr(ops->raw, ','), *target, *comment, prev;
479 
480         if (s == NULL)
481                 return -1;
482 
483         *s = '\0';
484         ops->source.raw = strdup(ops->raw);
485         *s = ',';
486 
487         if (ops->source.raw == NULL)
488                 return -1;
489 
490         target = ++s;
491         comment = strchr(s, arch->objdump.comment_char);
492 
493         if (comment != NULL)
494                 s = comment - 1;
495         else
496                 s = strchr(s, '\0') - 1;
497 
498         while (s > target && isspace(s[0]))
499                 --s;
500         s++;
501         prev = *s;
502         *s = '\0';
503 
504         ops->target.raw = strdup(target);
505         *s = prev;
506 
507         if (ops->target.raw == NULL)
508                 goto out_free_source;
509 
510         if (comment == NULL)
511                 return 0;
512 
513         comment = ltrim(comment);
514         comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name);
515         comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
516 
517         return 0;
518 
519 out_free_source:
520         zfree(&ops->source.raw);
521         return -1;
522 }
523 
524 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
525                            struct ins_operands *ops)
526 {
527         return scnprintf(bf, size, "%-6s %s,%s", ins->name,
528                          ops->source.name ?: ops->source.raw,
529                          ops->target.name ?: ops->target.raw);
530 }
531 
532 static struct ins_ops mov_ops = {
533         .parse     = mov__parse,
534         .scnprintf = mov__scnprintf,
535 };
536 
537 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
538 {
539         char *target, *comment, *s, prev;
540 
541         target = s = ops->raw;
542 
543         while (s[0] != '\0' && !isspace(s[0]))
544                 ++s;
545         prev = *s;
546         *s = '\0';
547 
548         ops->target.raw = strdup(target);
549         *s = prev;
550 
551         if (ops->target.raw == NULL)
552                 return -1;
553 
554         comment = strchr(s, arch->objdump.comment_char);
555         if (comment == NULL)
556                 return 0;
557 
558         comment = ltrim(comment);
559         comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
560 
561         return 0;
562 }
563 
564 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
565                            struct ins_operands *ops)
566 {
567         return scnprintf(bf, size, "%-6s %s", ins->name,
568                          ops->target.name ?: ops->target.raw);
569 }
570 
571 static struct ins_ops dec_ops = {
572         .parse     = dec__parse,
573         .scnprintf = dec__scnprintf,
574 };
575 
576 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
577                           struct ins_operands *ops __maybe_unused)
578 {
579         return scnprintf(bf, size, "%-6s", "nop");
580 }
581 
582 static struct ins_ops nop_ops = {
583         .scnprintf = nop__scnprintf,
584 };
585 
586 static struct ins_ops ret_ops = {
587         .scnprintf = ins__raw_scnprintf,
588 };
589 
590 bool ins__is_ret(const struct ins *ins)
591 {
592         return ins->ops == &ret_ops;
593 }
594 
595 bool ins__is_lock(const struct ins *ins)
596 {
597         return ins->ops == &lock_ops;
598 }
599 
600 static int ins__key_cmp(const void *name, const void *insp)
601 {
602         const struct ins *ins = insp;
603 
604         return strcmp(name, ins->name);
605 }
606 
607 static int ins__cmp(const void *a, const void *b)
608 {
609         const struct ins *ia = a;
610         const struct ins *ib = b;
611 
612         return strcmp(ia->name, ib->name);
613 }
614 
615 static void ins__sort(struct arch *arch)
616 {
617         const int nmemb = arch->nr_instructions;
618 
619         qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
620 }
621 
622 static struct ins_ops *__ins__find(struct arch *arch, const char *name)
623 {
624         struct ins *ins;
625         const int nmemb = arch->nr_instructions;
626 
627         if (!arch->sorted_instructions) {
628                 ins__sort(arch);
629                 arch->sorted_instructions = true;
630         }
631 
632         ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
633         return ins ? ins->ops : NULL;
634 }
635 
636 static struct ins_ops *ins__find(struct arch *arch, const char *name)
637 {
638         struct ins_ops *ops = __ins__find(arch, name);
639 
640         if (!ops && arch->associate_instruction_ops)
641                 ops = arch->associate_instruction_ops(arch, name);
642 
643         return ops;
644 }
645 
646 static int arch__key_cmp(const void *name, const void *archp)
647 {
648         const struct arch *arch = archp;
649 
650         return strcmp(name, arch->name);
651 }
652 
653 static int arch__cmp(const void *a, const void *b)
654 {
655         const struct arch *aa = a;
656         const struct arch *ab = b;
657 
658         return strcmp(aa->name, ab->name);
659 }
660 
661 static void arch__sort(void)
662 {
663         const int nmemb = ARRAY_SIZE(architectures);
664 
665         qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
666 }
667 
668 static struct arch *arch__find(const char *name)
669 {
670         const int nmemb = ARRAY_SIZE(architectures);
671         static bool sorted;
672 
673         if (!sorted) {
674                 arch__sort();
675                 sorted = true;
676         }
677 
678         return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
679 }
680 
681 static struct annotated_source *annotated_source__new(void)
682 {
683         struct annotated_source *src = zalloc(sizeof(*src));
684 
685         if (src != NULL)
686                 INIT_LIST_HEAD(&src->source);
687 
688         return src;
689 }
690 
691 static __maybe_unused void annotated_source__delete(struct annotated_source *src)
692 {
693         if (src == NULL)
694                 return;
695         zfree(&src->histograms);
696         zfree(&src->cycles_hist);
697         free(src);
698 }
699 
700 static int annotated_source__alloc_histograms(struct annotated_source *src,
701                                               size_t size, int nr_hists)
702 {
703         size_t sizeof_sym_hist;
704 
705         /*
706          * Add buffer of one element for zero length symbol.
707          * When sample is taken from first instruction of
708          * zero length symbol, perf still resolves it and
709          * shows symbol name in perf report and allows to
710          * annotate it.
711          */
712         if (size == 0)
713                 size = 1;
714 
715         /* Check for overflow when calculating sizeof_sym_hist */
716         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry))
717                 return -1;
718 
719         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry));
720 
721         /* Check for overflow in zalloc argument */
722         if (sizeof_sym_hist > SIZE_MAX / nr_hists)
723                 return -1;
724 
725         src->sizeof_sym_hist = sizeof_sym_hist;
726         src->nr_histograms   = nr_hists;
727         src->histograms      = calloc(nr_hists, sizeof_sym_hist) ;
728         return src->histograms ? 0 : -1;
729 }
730 
731 /* The cycles histogram is lazily allocated. */
732 static int symbol__alloc_hist_cycles(struct symbol *sym)
733 {
734         struct annotation *notes = symbol__annotation(sym);
735         const size_t size = symbol__size(sym);
736 
737         notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
738         if (notes->src->cycles_hist == NULL)
739                 return -1;
740         return 0;
741 }
742 
743 void symbol__annotate_zero_histograms(struct symbol *sym)
744 {
745         struct annotation *notes = symbol__annotation(sym);
746 
747         pthread_mutex_lock(&notes->lock);
748         if (notes->src != NULL) {
749                 memset(notes->src->histograms, 0,
750                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
751                 if (notes->src->cycles_hist)
752                         memset(notes->src->cycles_hist, 0,
753                                 symbol__size(sym) * sizeof(struct cyc_hist));
754         }
755         pthread_mutex_unlock(&notes->lock);
756 }
757 
758 static int __symbol__account_cycles(struct cyc_hist *ch,
759                                     u64 start,
760                                     unsigned offset, unsigned cycles,
761                                     unsigned have_start)
762 {
763         /*
764          * For now we can only account one basic block per
765          * final jump. But multiple could be overlapping.
766          * Always account the longest one. So when
767          * a shorter one has been already seen throw it away.
768          *
769          * We separately always account the full cycles.
770          */
771         ch[offset].num_aggr++;
772         ch[offset].cycles_aggr += cycles;
773 
774         if (cycles > ch[offset].cycles_max)
775                 ch[offset].cycles_max = cycles;
776 
777         if (ch[offset].cycles_min) {
778                 if (cycles && cycles < ch[offset].cycles_min)
779                         ch[offset].cycles_min = cycles;
780         } else
781                 ch[offset].cycles_min = cycles;
782 
783         if (!have_start && ch[offset].have_start)
784                 return 0;
785         if (ch[offset].num) {
786                 if (have_start && (!ch[offset].have_start ||
787                                    ch[offset].start > start)) {
788                         ch[offset].have_start = 0;
789                         ch[offset].cycles = 0;
790                         ch[offset].num = 0;
791                         if (ch[offset].reset < 0xffff)
792                                 ch[offset].reset++;
793                 } else if (have_start &&
794                            ch[offset].start < start)
795                         return 0;
796         }
797         ch[offset].have_start = have_start;
798         ch[offset].start = start;
799         ch[offset].cycles += cycles;
800         ch[offset].num++;
801         return 0;
802 }
803 
804 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
805                                       struct annotated_source *src, int evidx, u64 addr,
806                                       struct perf_sample *sample)
807 {
808         unsigned offset;
809         struct sym_hist *h;
810 
811         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
812 
813         if ((addr < sym->start || addr >= sym->end) &&
814             (addr != sym->end || sym->start != sym->end)) {
815                 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
816                        __func__, __LINE__, sym->name, sym->start, addr, sym->end);
817                 return -ERANGE;
818         }
819 
820         offset = addr - sym->start;
821         h = annotated_source__histogram(src, evidx);
822         if (h == NULL) {
823                 pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n",
824                          __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC);
825                 return -ENOMEM;
826         }
827         h->nr_samples++;
828         h->addr[offset].nr_samples++;
829         h->period += sample->period;
830         h->addr[offset].period += sample->period;
831 
832         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
833                   ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n",
834                   sym->start, sym->name, addr, addr - sym->start, evidx,
835                   h->addr[offset].nr_samples, h->addr[offset].period);
836         return 0;
837 }
838 
839 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym)
840 {
841         struct annotation *notes = symbol__annotation(sym);
842 
843         if (notes->src == NULL) {
844                 notes->src = annotated_source__new();
845                 if (notes->src == NULL)
846                         return NULL;
847                 goto alloc_cycles_hist;
848         }
849 
850         if (!notes->src->cycles_hist) {
851 alloc_cycles_hist:
852                 symbol__alloc_hist_cycles(sym);
853         }
854 
855         return notes->src->cycles_hist;
856 }
857 
858 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists)
859 {
860         struct annotation *notes = symbol__annotation(sym);
861 
862         if (notes->src == NULL) {
863                 notes->src = annotated_source__new();
864                 if (notes->src == NULL)
865                         return NULL;
866                 goto alloc_histograms;
867         }
868 
869         if (notes->src->histograms == NULL) {
870 alloc_histograms:
871                 annotated_source__alloc_histograms(notes->src, symbol__size(sym),
872                                                    nr_hists);
873         }
874 
875         return notes->src;
876 }
877 
878 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
879                                     struct perf_evsel *evsel, u64 addr,
880                                     struct perf_sample *sample)
881 {
882         struct annotated_source *src;
883 
884         if (sym == NULL)
885                 return 0;
886         src = symbol__hists(sym, evsel->evlist->nr_entries);
887         if (src == NULL)
888                 return -ENOMEM;
889         return __symbol__inc_addr_samples(sym, map, src, evsel->idx, addr, sample);
890 }
891 
892 static int symbol__account_cycles(u64 addr, u64 start,
893                                   struct symbol *sym, unsigned cycles)
894 {
895         struct cyc_hist *cycles_hist;
896         unsigned offset;
897 
898         if (sym == NULL)
899                 return 0;
900         cycles_hist = symbol__cycles_hist(sym);
901         if (cycles_hist == NULL)
902                 return -ENOMEM;
903         if (addr < sym->start || addr >= sym->end)
904                 return -ERANGE;
905 
906         if (start) {
907                 if (start < sym->start || start >= sym->end)
908                         return -ERANGE;
909                 if (start >= addr)
910                         start = 0;
911         }
912         offset = addr - sym->start;
913         return __symbol__account_cycles(cycles_hist,
914                                         start ? start - sym->start : 0,
915                                         offset, cycles,
916                                         !!start);
917 }
918 
919 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
920                                     struct addr_map_symbol *start,
921                                     unsigned cycles)
922 {
923         u64 saddr = 0;
924         int err;
925 
926         if (!cycles)
927                 return 0;
928 
929         /*
930          * Only set start when IPC can be computed. We can only
931          * compute it when the basic block is completely in a single
932          * function.
933          * Special case the case when the jump is elsewhere, but
934          * it starts on the function start.
935          */
936         if (start &&
937                 (start->sym == ams->sym ||
938                  (ams->sym &&
939                    start->addr == ams->sym->start + ams->map->start)))
940                 saddr = start->al_addr;
941         if (saddr == 0)
942                 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
943                         ams->addr,
944                         start ? start->addr : 0,
945                         ams->sym ? ams->sym->start + ams->map->start : 0,
946                         saddr);
947         err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
948         if (err)
949                 pr_debug2("account_cycles failed %d\n", err);
950         return err;
951 }
952 
953 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end)
954 {
955         unsigned n_insn = 0;
956         u64 offset;
957 
958         for (offset = start; offset <= end; offset++) {
959                 if (notes->offsets[offset])
960                         n_insn++;
961         }
962         return n_insn;
963 }
964 
965 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch)
966 {
967         unsigned n_insn;
968         u64 offset;
969 
970         n_insn = annotation__count_insn(notes, start, end);
971         if (n_insn && ch->num && ch->cycles) {
972                 float ipc = n_insn / ((double)ch->cycles / (double)ch->num);
973 
974                 /* Hide data when there are too many overlaps. */
975                 if (ch->reset >= 0x7fff || ch->reset >= ch->num / 2)
976                         return;
977 
978                 for (offset = start; offset <= end; offset++) {
979                         struct annotation_line *al = notes->offsets[offset];
980 
981                         if (al)
982                                 al->ipc = ipc;
983                 }
984         }
985 }
986 
987 void annotation__compute_ipc(struct annotation *notes, size_t size)
988 {
989         u64 offset;
990 
991         if (!notes->src || !notes->src->cycles_hist)
992                 return;
993 
994         pthread_mutex_lock(&notes->lock);
995         for (offset = 0; offset < size; ++offset) {
996                 struct cyc_hist *ch;
997 
998                 ch = &notes->src->cycles_hist[offset];
999                 if (ch && ch->cycles) {
1000                         struct annotation_line *al;
1001 
1002                         if (ch->have_start)
1003                                 annotation__count_and_fill(notes, ch->start, offset, ch);
1004                         al = notes->offsets[offset];
1005                         if (al && ch->num_aggr) {
1006                                 al->cycles = ch->cycles_aggr / ch->num_aggr;
1007                                 al->cycles_max = ch->cycles_max;
1008                                 al->cycles_min = ch->cycles_min;
1009                         }
1010                         notes->have_cycles = true;
1011                 }
1012         }
1013         pthread_mutex_unlock(&notes->lock);
1014 }
1015 
1016 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
1017                                  struct perf_evsel *evsel)
1018 {
1019         return symbol__inc_addr_samples(ams->sym, ams->map, evsel, ams->al_addr, sample);
1020 }
1021 
1022 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
1023                                  struct perf_evsel *evsel, u64 ip)
1024 {
1025         return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evsel, ip, sample);
1026 }
1027 
1028 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms)
1029 {
1030         dl->ins.ops = ins__find(arch, dl->ins.name);
1031 
1032         if (!dl->ins.ops)
1033                 return;
1034 
1035         if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0)
1036                 dl->ins.ops = NULL;
1037 }
1038 
1039 static int disasm_line__parse(char *line, const char **namep, char **rawp)
1040 {
1041         char tmp, *name = ltrim(line);
1042 
1043         if (name[0] == '\0')
1044                 return -1;
1045 
1046         *rawp = name + 1;
1047 
1048         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
1049                 ++*rawp;
1050 
1051         tmp = (*rawp)[0];
1052         (*rawp)[0] = '\0';
1053         *namep = strdup(name);
1054 
1055         if (*namep == NULL)
1056                 goto out_free_name;
1057 
1058         (*rawp)[0] = tmp;
1059         *rawp = ltrim(*rawp);
1060 
1061         return 0;
1062 
1063 out_free_name:
1064         free((void *)namep);
1065         *namep = NULL;
1066         return -1;
1067 }
1068 
1069 struct annotate_args {
1070         size_t                   privsize;
1071         struct arch             *arch;
1072         struct map_symbol        ms;
1073         struct perf_evsel       *evsel;
1074         struct annotation_options *options;
1075         s64                      offset;
1076         char                    *line;
1077         int                      line_nr;
1078 };
1079 
1080 static void annotation_line__delete(struct annotation_line *al)
1081 {
1082         void *ptr = (void *) al - al->privsize;
1083 
1084         free_srcline(al->path);
1085         zfree(&al->line);
1086         free(ptr);
1087 }
1088 
1089 /*
1090  * Allocating the annotation line data with following
1091  * structure:
1092  *
1093  *    --------------------------------------
1094  *    private space | struct annotation_line
1095  *    --------------------------------------
1096  *
1097  * Size of the private space is stored in 'struct annotation_line'.
1098  *
1099  */
1100 static struct annotation_line *
1101 annotation_line__new(struct annotate_args *args, size_t privsize)
1102 {
1103         struct annotation_line *al;
1104         struct perf_evsel *evsel = args->evsel;
1105         size_t size = privsize + sizeof(*al);
1106         int nr = 1;
1107 
1108         if (perf_evsel__is_group_event(evsel))
1109                 nr = evsel->nr_members;
1110 
1111         size += sizeof(al->samples[0]) * nr;
1112 
1113         al = zalloc(size);
1114         if (al) {
1115                 al = (void *) al + privsize;
1116                 al->privsize   = privsize;
1117                 al->offset     = args->offset;
1118                 al->line       = strdup(args->line);
1119                 al->line_nr    = args->line_nr;
1120                 al->samples_nr = nr;
1121         }
1122 
1123         return al;
1124 }
1125 
1126 /*
1127  * Allocating the disasm annotation line data with
1128  * following structure:
1129  *
1130  *    ------------------------------------------------------------
1131  *    privsize space | struct disasm_line | struct annotation_line
1132  *    ------------------------------------------------------------
1133  *
1134  * We have 'struct annotation_line' member as last member
1135  * of 'struct disasm_line' to have an easy access.
1136  *
1137  */
1138 static struct disasm_line *disasm_line__new(struct annotate_args *args)
1139 {
1140         struct disasm_line *dl = NULL;
1141         struct annotation_line *al;
1142         size_t privsize = args->privsize + offsetof(struct disasm_line, al);
1143 
1144         al = annotation_line__new(args, privsize);
1145         if (al != NULL) {
1146                 dl = disasm_line(al);
1147 
1148                 if (dl->al.line == NULL)
1149                         goto out_delete;
1150 
1151                 if (args->offset != -1) {
1152                         if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
1153                                 goto out_free_line;
1154 
1155                         disasm_line__init_ins(dl, args->arch, &args->ms);
1156                 }
1157         }
1158 
1159         return dl;
1160 
1161 out_free_line:
1162         zfree(&dl->al.line);
1163 out_delete:
1164         free(dl);
1165         return NULL;
1166 }
1167 
1168 void disasm_line__free(struct disasm_line *dl)
1169 {
1170         if (dl->ins.ops && dl->ins.ops->free)
1171                 dl->ins.ops->free(&dl->ops);
1172         else
1173                 ins__delete(&dl->ops);
1174         free((void *)dl->ins.name);
1175         dl->ins.name = NULL;
1176         annotation_line__delete(&dl->al);
1177 }
1178 
1179 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
1180 {
1181         if (raw || !dl->ins.ops)
1182                 return scnprintf(bf, size, "%-6s %s", dl->ins.name, dl->ops.raw);
1183 
1184         return ins__scnprintf(&dl->ins, bf, size, &dl->ops);
1185 }
1186 
1187 static void annotation_line__add(struct annotation_line *al, struct list_head *head)
1188 {
1189         list_add_tail(&al->node, head);
1190 }
1191 
1192 struct annotation_line *
1193 annotation_line__next(struct annotation_line *pos, struct list_head *head)
1194 {
1195         list_for_each_entry_continue(pos, head, node)
1196                 if (pos->offset >= 0)
1197                         return pos;
1198 
1199         return NULL;
1200 }
1201 
1202 static const char *annotate__address_color(struct block_range *br)
1203 {
1204         double cov = block_range__coverage(br);
1205 
1206         if (cov >= 0) {
1207                 /* mark red for >75% coverage */
1208                 if (cov > 0.75)
1209                         return PERF_COLOR_RED;
1210 
1211                 /* mark dull for <1% coverage */
1212                 if (cov < 0.01)
1213                         return PERF_COLOR_NORMAL;
1214         }
1215 
1216         return PERF_COLOR_MAGENTA;
1217 }
1218 
1219 static const char *annotate__asm_color(struct block_range *br)
1220 {
1221         double cov = block_range__coverage(br);
1222 
1223         if (cov >= 0) {
1224                 /* mark dull for <1% coverage */
1225                 if (cov < 0.01)
1226                         return PERF_COLOR_NORMAL;
1227         }
1228 
1229         return PERF_COLOR_BLUE;
1230 }
1231 
1232 static void annotate__branch_printf(struct block_range *br, u64 addr)
1233 {
1234         bool emit_comment = true;
1235 
1236         if (!br)
1237                 return;
1238 
1239 #if 1
1240         if (br->is_target && br->start == addr) {
1241                 struct block_range *branch = br;
1242                 double p;
1243 
1244                 /*
1245                  * Find matching branch to our target.
1246                  */
1247                 while (!branch->is_branch)
1248                         branch = block_range__next(branch);
1249 
1250                 p = 100 *(double)br->entry / branch->coverage;
1251 
1252                 if (p > 0.1) {
1253                         if (emit_comment) {
1254                                 emit_comment = false;
1255                                 printf("\t#");
1256                         }
1257 
1258                         /*
1259                          * The percentage of coverage joined at this target in relation
1260                          * to the next branch.
1261                          */
1262                         printf(" +%.2f%%", p);
1263                 }
1264         }
1265 #endif
1266         if (br->is_branch && br->end == addr) {
1267                 double p = 100*(double)br->taken / br->coverage;
1268 
1269                 if (p > 0.1) {
1270                         if (emit_comment) {
1271                                 emit_comment = false;
1272                                 printf("\t#");
1273                         }
1274 
1275                         /*
1276                          * The percentage of coverage leaving at this branch, and
1277                          * its prediction ratio.
1278                          */
1279                         printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred  / br->taken);
1280                 }
1281         }
1282 }
1283 
1284 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width)
1285 {
1286         s64 offset = dl->al.offset;
1287         const u64 addr = start + offset;
1288         struct block_range *br;
1289 
1290         br = block_range__find(addr);
1291         color_fprintf(stdout, annotate__address_color(br), "  %*" PRIx64 ":", addr_fmt_width, addr);
1292         color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line);
1293         annotate__branch_printf(br, addr);
1294         return 0;
1295 }
1296 
1297 static int
1298 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start,
1299                        struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
1300                        int max_lines, struct annotation_line *queue, int addr_fmt_width)
1301 {
1302         struct disasm_line *dl = container_of(al, struct disasm_line, al);
1303         static const char *prev_line;
1304         static const char *prev_color;
1305 
1306         if (al->offset != -1) {
1307                 double max_percent = 0.0;
1308                 int i, nr_percent = 1;
1309                 const char *color;
1310                 struct annotation *notes = symbol__annotation(sym);
1311 
1312                 for (i = 0; i < al->samples_nr; i++) {
1313                         struct annotation_data *sample = &al->samples[i];
1314 
1315                         if (sample->percent > max_percent)
1316                                 max_percent = sample->percent;
1317                 }
1318 
1319                 if (al->samples_nr > nr_percent)
1320                         nr_percent = al->samples_nr;
1321 
1322                 if (max_percent < min_pcnt)
1323                         return -1;
1324 
1325                 if (max_lines && printed >= max_lines)
1326                         return 1;
1327 
1328                 if (queue != NULL) {
1329                         list_for_each_entry_from(queue, &notes->src->source, node) {
1330                                 if (queue == al)
1331                                         break;
1332                                 annotation_line__print(queue, sym, start, evsel, len,
1333                                                        0, 0, 1, NULL, addr_fmt_width);
1334                         }
1335                 }
1336 
1337                 color = get_percent_color(max_percent);
1338 
1339                 /*
1340                  * Also color the filename and line if needed, with
1341                  * the same color than the percentage. Don't print it
1342                  * twice for close colored addr with the same filename:line
1343                  */
1344                 if (al->path) {
1345                         if (!prev_line || strcmp(prev_line, al->path)
1346                                        || color != prev_color) {
1347                                 color_fprintf(stdout, color, " %s", al->path);
1348                                 prev_line = al->path;
1349                                 prev_color = color;
1350                         }
1351                 }
1352 
1353                 for (i = 0; i < nr_percent; i++) {
1354                         struct annotation_data *sample = &al->samples[i];
1355 
1356                         color = get_percent_color(sample->percent);
1357 
1358                         if (symbol_conf.show_total_period)
1359                                 color_fprintf(stdout, color, " %11" PRIu64,
1360                                               sample->he.period);
1361                         else if (symbol_conf.show_nr_samples)
1362                                 color_fprintf(stdout, color, " %7" PRIu64,
1363                                               sample->he.nr_samples);
1364                         else
1365                                 color_fprintf(stdout, color, " %7.2f", sample->percent);
1366                 }
1367 
1368                 printf(" : ");
1369 
1370                 disasm_line__print(dl, start, addr_fmt_width);
1371                 printf("\n");
1372         } else if (max_lines && printed >= max_lines)
1373                 return 1;
1374         else {
1375                 int width = symbol_conf.show_total_period ? 12 : 8;
1376 
1377                 if (queue)
1378                         return -1;
1379 
1380                 if (perf_evsel__is_group_event(evsel))
1381                         width *= evsel->nr_members;
1382 
1383                 if (!*al->line)
1384                         printf(" %*s:\n", width, " ");
1385                 else
1386                         printf(" %*s:     %*s %s\n", width, " ", addr_fmt_width, " ", al->line);
1387         }
1388 
1389         return 0;
1390 }
1391 
1392 /*
1393  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
1394  * which looks like following
1395  *
1396  *  0000000000415500 <_init>:
1397  *    415500:       sub    $0x8,%rsp
1398  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
1399  *    41550b:       test   %rax,%rax
1400  *    41550e:       je     415515 <_init+0x15>
1401  *    415510:       callq  416e70 <__gmon_start__@plt>
1402  *    415515:       add    $0x8,%rsp
1403  *    415519:       retq
1404  *
1405  * it will be parsed and saved into struct disasm_line as
1406  *  <offset>       <name>  <ops.raw>
1407  *
1408  * The offset will be a relative offset from the start of the symbol and -1
1409  * means that it's not a disassembly line so should be treated differently.
1410  * The ops.raw part will be parsed further according to type of the instruction.
1411  */
1412 static int symbol__parse_objdump_line(struct symbol *sym, FILE *file,
1413                                       struct annotate_args *args,
1414                                       int *line_nr)
1415 {
1416         struct map *map = args->ms.map;
1417         struct annotation *notes = symbol__annotation(sym);
1418         struct disasm_line *dl;
1419         char *line = NULL, *parsed_line, *tmp, *tmp2;
1420         size_t line_len;
1421         s64 line_ip, offset = -1;
1422         regmatch_t match[2];
1423 
1424         if (getline(&line, &line_len, file) < 0)
1425                 return -1;
1426 
1427         if (!line)
1428                 return -1;
1429 
1430         line_ip = -1;
1431         parsed_line = rtrim(line);
1432 
1433         /* /filename:linenr ? Save line number and ignore. */
1434         if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
1435                 *line_nr = atoi(parsed_line + match[1].rm_so);
1436                 return 0;
1437         }
1438 
1439         tmp = ltrim(parsed_line);
1440         if (*tmp) {
1441                 /*
1442                  * Parse hexa addresses followed by ':'
1443                  */
1444                 line_ip = strtoull(tmp, &tmp2, 16);
1445                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
1446                         line_ip = -1;
1447         }
1448 
1449         if (line_ip != -1) {
1450                 u64 start = map__rip_2objdump(map, sym->start),
1451                     end = map__rip_2objdump(map, sym->end);
1452 
1453                 offset = line_ip - start;
1454                 if ((u64)line_ip < start || (u64)line_ip >= end)
1455                         offset = -1;
1456                 else
1457                         parsed_line = tmp2 + 1;
1458         }
1459 
1460         args->offset  = offset;
1461         args->line    = parsed_line;
1462         args->line_nr = *line_nr;
1463         args->ms.sym  = sym;
1464 
1465         dl = disasm_line__new(args);
1466         free(line);
1467         (*line_nr)++;
1468 
1469         if (dl == NULL)
1470                 return -1;
1471 
1472         if (!disasm_line__has_local_offset(dl)) {
1473                 dl->ops.target.offset = dl->ops.target.addr -
1474                                         map__rip_2objdump(map, sym->start);
1475                 dl->ops.target.offset_avail = true;
1476         }
1477 
1478         /* kcore has no symbols, so add the call target symbol */
1479         if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) {
1480                 struct addr_map_symbol target = {
1481                         .map = map,
1482                         .addr = dl->ops.target.addr,
1483                 };
1484 
1485                 if (!map_groups__find_ams(&target) &&
1486                     target.sym->start == target.al_addr)
1487                         dl->ops.target.sym = target.sym;
1488         }
1489 
1490         annotation_line__add(&dl->al, &notes->src->source);
1491 
1492         return 0;
1493 }
1494 
1495 static __attribute__((constructor)) void symbol__init_regexpr(void)
1496 {
1497         regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1498 }
1499 
1500 static void delete_last_nop(struct symbol *sym)
1501 {
1502         struct annotation *notes = symbol__annotation(sym);
1503         struct list_head *list = &notes->src->source;
1504         struct disasm_line *dl;
1505 
1506         while (!list_empty(list)) {
1507                 dl = list_entry(list->prev, struct disasm_line, al.node);
1508 
1509                 if (dl->ins.ops) {
1510                         if (dl->ins.ops != &nop_ops)
1511                                 return;
1512                 } else {
1513                         if (!strstr(dl->al.line, " nop ") &&
1514                             !strstr(dl->al.line, " nopl ") &&
1515                             !strstr(dl->al.line, " nopw "))
1516                                 return;
1517                 }
1518 
1519                 list_del(&dl->al.node);
1520                 disasm_line__free(dl);
1521         }
1522 }
1523 
1524 int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
1525                               int errnum, char *buf, size_t buflen)
1526 {
1527         struct dso *dso = map->dso;
1528 
1529         BUG_ON(buflen == 0);
1530 
1531         if (errnum >= 0) {
1532                 str_error_r(errnum, buf, buflen);
1533                 return 0;
1534         }
1535 
1536         switch (errnum) {
1537         case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
1538                 char bf[SBUILD_ID_SIZE + 15] = " with build id ";
1539                 char *build_id_msg = NULL;
1540 
1541                 if (dso->has_build_id) {
1542                         build_id__sprintf(dso->build_id,
1543                                           sizeof(dso->build_id), bf + 15);
1544                         build_id_msg = bf;
1545                 }
1546                 scnprintf(buf, buflen,
1547                           "No vmlinux file%s\nwas found in the path.\n\n"
1548                           "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1549                           "Please use:\n\n"
1550                           "  perf buildid-cache -vu vmlinux\n\n"
1551                           "or:\n\n"
1552                           "  --vmlinux vmlinux\n", build_id_msg ?: "");
1553         }
1554                 break;
1555         default:
1556                 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
1557                 break;
1558         }
1559 
1560         return 0;
1561 }
1562 
1563 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
1564 {
1565         char linkname[PATH_MAX];
1566         char *build_id_filename;
1567         char *build_id_path = NULL;
1568         char *pos;
1569 
1570         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1571             !dso__is_kcore(dso))
1572                 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
1573 
1574         build_id_filename = dso__build_id_filename(dso, NULL, 0, false);
1575         if (build_id_filename) {
1576                 __symbol__join_symfs(filename, filename_size, build_id_filename);
1577                 free(build_id_filename);
1578         } else {
1579                 if (dso->has_build_id)
1580                         return ENOMEM;
1581                 goto fallback;
1582         }
1583 
1584         build_id_path = strdup(filename);
1585         if (!build_id_path)
1586                 return -1;
1587 
1588         /*
1589          * old style build-id cache has name of XX/XXXXXXX.. while
1590          * new style has XX/XXXXXXX../{elf,kallsyms,vdso}.
1591          * extract the build-id part of dirname in the new style only.
1592          */
1593         pos = strrchr(build_id_path, '/');
1594         if (pos && strlen(pos) < SBUILD_ID_SIZE - 2)
1595                 dirname(build_id_path);
1596 
1597         if (dso__is_kcore(dso) ||
1598             readlink(build_id_path, linkname, sizeof(linkname)) < 0 ||
1599             strstr(linkname, DSO__NAME_KALLSYMS) ||
1600             access(filename, R_OK)) {
1601 fallback:
1602                 /*
1603                  * If we don't have build-ids or the build-id file isn't in the
1604                  * cache, or is just a kallsyms file, well, lets hope that this
1605                  * DSO is the same as when 'perf record' ran.
1606                  */
1607                 __symbol__join_symfs(filename, filename_size, dso->long_name);
1608         }
1609 
1610         free(build_id_path);
1611         return 0;
1612 }
1613 
1614 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args)
1615 {
1616         struct annotation_options *opts = args->options;
1617         struct map *map = args->ms.map;
1618         struct dso *dso = map->dso;
1619         char *command;
1620         FILE *file;
1621         char symfs_filename[PATH_MAX];
1622         struct kcore_extract kce;
1623         bool delete_extract = false;
1624         int stdout_fd[2];
1625         int lineno = 0;
1626         int nline;
1627         pid_t pid;
1628         int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
1629 
1630         if (err)
1631                 return err;
1632 
1633         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1634                  symfs_filename, sym->name, map->unmap_ip(map, sym->start),
1635                  map->unmap_ip(map, sym->end));
1636 
1637         pr_debug("annotating [%p] %30s : [%p] %30s\n",
1638                  dso, dso->long_name, sym, sym->name);
1639 
1640         if (dso__is_kcore(dso)) {
1641                 kce.kcore_filename = symfs_filename;
1642                 kce.addr = map__rip_2objdump(map, sym->start);
1643                 kce.offs = sym->start;
1644                 kce.len = sym->end - sym->start;
1645                 if (!kcore_extract__create(&kce)) {
1646                         delete_extract = true;
1647                         strlcpy(symfs_filename, kce.extract_filename,
1648                                 sizeof(symfs_filename));
1649                 }
1650         } else if (dso__needs_decompress(dso)) {
1651                 char tmp[KMOD_DECOMP_LEN];
1652 
1653                 if (dso__decompress_kmodule_path(dso, symfs_filename,
1654                                                  tmp, sizeof(tmp)) < 0)
1655                         goto out;
1656 
1657                 strcpy(symfs_filename, tmp);
1658         }
1659 
1660         err = asprintf(&command,
1661                  "%s %s%s --start-address=0x%016" PRIx64
1662                  " --stop-address=0x%016" PRIx64
1663                  " -l -d %s %s -C \"%s\" 2>/dev/null|grep -v \"%s:\"|expand",
1664                  opts->objdump_path ?: "objdump",
1665                  opts->disassembler_style ? "-M " : "",
1666                  opts->disassembler_style ?: "",
1667                  map__rip_2objdump(map, sym->start),
1668                  map__rip_2objdump(map, sym->end),
1669                  opts->show_asm_raw ? "" : "--no-show-raw",
1670                  opts->annotate_src ? "-S" : "",
1671                  symfs_filename, symfs_filename);
1672 
1673         if (err < 0) {
1674                 pr_err("Failure allocating memory for the command to run\n");
1675                 goto out_remove_tmp;
1676         }
1677 
1678         pr_debug("Executing: %s\n", command);
1679 
1680         err = -1;
1681         if (pipe(stdout_fd) < 0) {
1682                 pr_err("Failure creating the pipe to run %s\n", command);
1683                 goto out_free_command;
1684         }
1685 
1686         pid = fork();
1687         if (pid < 0) {
1688                 pr_err("Failure forking to run %s\n", command);
1689                 goto out_close_stdout;
1690         }
1691 
1692         if (pid == 0) {
1693                 close(stdout_fd[0]);
1694                 dup2(stdout_fd[1], 1);
1695                 close(stdout_fd[1]);
1696                 execl("/bin/sh", "sh", "-c", command, NULL);
1697                 perror(command);
1698                 exit(-1);
1699         }
1700 
1701         close(stdout_fd[1]);
1702 
1703         file = fdopen(stdout_fd[0], "r");
1704         if (!file) {
1705                 pr_err("Failure creating FILE stream for %s\n", command);
1706                 /*
1707                  * If we were using debug info should retry with
1708                  * original binary.
1709                  */
1710                 goto out_free_command;
1711         }
1712 
1713         nline = 0;
1714         while (!feof(file)) {
1715                 /*
1716                  * The source code line number (lineno) needs to be kept in
1717                  * accross calls to symbol__parse_objdump_line(), so that it
1718                  * can associate it with the instructions till the next one.
1719                  * See disasm_line__new() and struct disasm_line::line_nr.
1720                  */
1721                 if (symbol__parse_objdump_line(sym, file, args, &lineno) < 0)
1722                         break;
1723                 nline++;
1724         }
1725 
1726         if (nline == 0)
1727                 pr_err("No output from %s\n", command);
1728 
1729         /*
1730          * kallsyms does not have symbol sizes so there may a nop at the end.
1731          * Remove it.
1732          */
1733         if (dso__is_kcore(dso))
1734                 delete_last_nop(sym);
1735 
1736         fclose(file);
1737         err = 0;
1738 out_free_command:
1739         free(command);
1740 out_remove_tmp:
1741         close(stdout_fd[0]);
1742 
1743         if (dso__needs_decompress(dso))
1744                 unlink(symfs_filename);
1745 
1746         if (delete_extract)
1747                 kcore_extract__delete(&kce);
1748 out:
1749         return err;
1750 
1751 out_close_stdout:
1752         close(stdout_fd[1]);
1753         goto out_free_command;
1754 }
1755 
1756 static void calc_percent(struct sym_hist *hist,
1757                          struct annotation_data *sample,
1758                          s64 offset, s64 end)
1759 {
1760         unsigned int hits = 0;
1761         u64 period = 0;
1762 
1763         while (offset < end) {
1764                 hits   += hist->addr[offset].nr_samples;
1765                 period += hist->addr[offset].period;
1766                 ++offset;
1767         }
1768 
1769         if (hist->nr_samples) {
1770                 sample->he.period     = period;
1771                 sample->he.nr_samples = hits;
1772                 sample->percent = 100.0 * hits / hist->nr_samples;
1773         }
1774 }
1775 
1776 static void annotation__calc_percent(struct annotation *notes,
1777                                      struct perf_evsel *evsel, s64 len)
1778 {
1779         struct annotation_line *al, *next;
1780 
1781         list_for_each_entry(al, &notes->src->source, node) {
1782                 s64 end;
1783                 int i;
1784 
1785                 if (al->offset == -1)
1786                         continue;
1787 
1788                 next = annotation_line__next(al, &notes->src->source);
1789                 end  = next ? next->offset : len;
1790 
1791                 for (i = 0; i < al->samples_nr; i++) {
1792                         struct annotation_data *sample;
1793                         struct sym_hist *hist;
1794 
1795                         hist   = annotation__histogram(notes, evsel->idx + i);
1796                         sample = &al->samples[i];
1797 
1798                         calc_percent(hist, sample, al->offset, end);
1799                 }
1800         }
1801 }
1802 
1803 void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel)
1804 {
1805         struct annotation *notes = symbol__annotation(sym);
1806 
1807         annotation__calc_percent(notes, evsel, symbol__size(sym));
1808 }
1809 
1810 int symbol__annotate(struct symbol *sym, struct map *map,
1811                      struct perf_evsel *evsel, size_t privsize,
1812                      struct annotation_options *options,
1813                      struct arch **parch)
1814 {
1815         struct annotate_args args = {
1816                 .privsize       = privsize,
1817                 .evsel          = evsel,
1818                 .options        = options,
1819         };
1820         struct perf_env *env = perf_evsel__env(evsel);
1821         const char *arch_name = perf_env__arch(env);
1822         struct arch *arch;
1823         int err;
1824 
1825         if (!arch_name)
1826                 return -1;
1827 
1828         args.arch = arch = arch__find(arch_name);
1829         if (arch == NULL)
1830                 return -ENOTSUP;
1831 
1832         if (parch)
1833                 *parch = arch;
1834 
1835         if (arch->init) {
1836                 err = arch->init(arch, env ? env->cpuid : NULL);
1837                 if (err) {
1838                         pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
1839                         return err;
1840                 }
1841         }
1842 
1843         args.ms.map = map;
1844         args.ms.sym = sym;
1845 
1846         return symbol__disassemble(sym, &args);
1847 }
1848 
1849 static void insert_source_line(struct rb_root *root, struct annotation_line *al)
1850 {
1851         struct annotation_line *iter;
1852         struct rb_node **p = &root->rb_node;
1853         struct rb_node *parent = NULL;
1854         int i, ret;
1855 
1856         while (*p != NULL) {
1857                 parent = *p;
1858                 iter = rb_entry(parent, struct annotation_line, rb_node);
1859 
1860                 ret = strcmp(iter->path, al->path);
1861                 if (ret == 0) {
1862                         for (i = 0; i < al->samples_nr; i++)
1863                                 iter->samples[i].percent_sum += al->samples[i].percent;
1864                         return;
1865                 }
1866 
1867                 if (ret < 0)
1868                         p = &(*p)->rb_left;
1869                 else
1870                         p = &(*p)->rb_right;
1871         }
1872 
1873         for (i = 0; i < al->samples_nr; i++)
1874                 al->samples[i].percent_sum = al->samples[i].percent;
1875 
1876         rb_link_node(&al->rb_node, parent, p);
1877         rb_insert_color(&al->rb_node, root);
1878 }
1879 
1880 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b)
1881 {
1882         int i;
1883 
1884         for (i = 0; i < a->samples_nr; i++) {
1885                 if (a->samples[i].percent_sum == b->samples[i].percent_sum)
1886                         continue;
1887                 return a->samples[i].percent_sum > b->samples[i].percent_sum;
1888         }
1889 
1890         return 0;
1891 }
1892 
1893 static void __resort_source_line(struct rb_root *root, struct annotation_line *al)
1894 {
1895         struct annotation_line *iter;
1896         struct rb_node **p = &root->rb_node;
1897         struct rb_node *parent = NULL;
1898 
1899         while (*p != NULL) {
1900                 parent = *p;
1901                 iter = rb_entry(parent, struct annotation_line, rb_node);
1902 
1903                 if (cmp_source_line(al, iter))
1904                         p = &(*p)->rb_left;
1905                 else
1906                         p = &(*p)->rb_right;
1907         }
1908 
1909         rb_link_node(&al->rb_node, parent, p);
1910         rb_insert_color(&al->rb_node, root);
1911 }
1912 
1913 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1914 {
1915         struct annotation_line *al;
1916         struct rb_node *node;
1917 
1918         node = rb_first(src_root);
1919         while (node) {
1920                 struct rb_node *next;
1921 
1922                 al = rb_entry(node, struct annotation_line, rb_node);
1923                 next = rb_next(node);
1924                 rb_erase(node, src_root);
1925 
1926                 __resort_source_line(dest_root, al);
1927                 node = next;
1928         }
1929 }
1930 
1931 static void print_summary(struct rb_root *root, const char *filename)
1932 {
1933         struct annotation_line *al;
1934         struct rb_node *node;
1935 
1936         printf("\nSorted summary for file %s\n", filename);
1937         printf("----------------------------------------------\n\n");
1938 
1939         if (RB_EMPTY_ROOT(root)) {
1940                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1941                 return;
1942         }
1943 
1944         node = rb_first(root);
1945         while (node) {
1946                 double percent, percent_max = 0.0;
1947                 const char *color;
1948                 char *path;
1949                 int i;
1950 
1951                 al = rb_entry(node, struct annotation_line, rb_node);
1952                 for (i = 0; i < al->samples_nr; i++) {
1953                         percent = al->samples[i].percent_sum;
1954                         color = get_percent_color(percent);
1955                         color_fprintf(stdout, color, " %7.2f", percent);
1956 
1957                         if (percent > percent_max)
1958                                 percent_max = percent;
1959                 }
1960 
1961                 path = al->path;
1962                 color = get_percent_color(percent_max);
1963                 color_fprintf(stdout, color, " %s\n", path);
1964 
1965                 node = rb_next(node);
1966         }
1967 }
1968 
1969 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1970 {
1971         struct annotation *notes = symbol__annotation(sym);
1972         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1973         u64 len = symbol__size(sym), offset;
1974 
1975         for (offset = 0; offset < len; ++offset)
1976                 if (h->addr[offset].nr_samples != 0)
1977                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1978                                sym->start + offset, h->addr[offset].nr_samples);
1979         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples);
1980 }
1981 
1982 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start)
1983 {
1984         char bf[32];
1985         struct annotation_line *line;
1986 
1987         list_for_each_entry_reverse(line, lines, node) {
1988                 if (line->offset != -1)
1989                         return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset);
1990         }
1991 
1992         return 0;
1993 }
1994 
1995 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1996                             struct perf_evsel *evsel,
1997                             struct annotation_options *opts)
1998 {
1999         struct dso *dso = map->dso;
2000         char *filename;
2001         const char *d_filename;
2002         const char *evsel_name = perf_evsel__name(evsel);
2003         struct annotation *notes = symbol__annotation(sym);
2004         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
2005         struct annotation_line *pos, *queue = NULL;
2006         u64 start = map__rip_2objdump(map, sym->start);
2007         int printed = 2, queue_len = 0, addr_fmt_width;
2008         int more = 0;
2009         bool context = opts->context;
2010         u64 len;
2011         int width = symbol_conf.show_total_period ? 12 : 8;
2012         int graph_dotted_len;
2013         char buf[512];
2014 
2015         filename = strdup(dso->long_name);
2016         if (!filename)
2017                 return -ENOMEM;
2018 
2019         if (opts->full_path)
2020                 d_filename = filename;
2021         else
2022                 d_filename = basename(filename);
2023 
2024         len = symbol__size(sym);
2025 
2026         if (perf_evsel__is_group_event(evsel)) {
2027                 width *= evsel->nr_members;
2028                 perf_evsel__group_desc(evsel, buf, sizeof(buf));
2029                 evsel_name = buf;
2030         }
2031 
2032         graph_dotted_len = printf(" %-*.*s|     Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
2033                                   width, width, symbol_conf.show_total_period ? "Period" :
2034                                   symbol_conf.show_nr_samples ? "Samples" : "Percent",
2035                                   d_filename, evsel_name, h->nr_samples);
2036 
2037         printf("%-*.*s----\n",
2038                graph_dotted_len, graph_dotted_len, graph_dotted_line);
2039 
2040         if (verbose > 0)
2041                 symbol__annotate_hits(sym, evsel);
2042 
2043         addr_fmt_width = annotated_source__addr_fmt_width(&notes->src->source, start);
2044 
2045         list_for_each_entry(pos, &notes->src->source, node) {
2046                 int err;
2047 
2048                 if (context && queue == NULL) {
2049                         queue = pos;
2050                         queue_len = 0;
2051                 }
2052 
2053                 err = annotation_line__print(pos, sym, start, evsel, len,
2054                                              opts->min_pcnt, printed, opts->max_lines,
2055                                              queue, addr_fmt_width);
2056 
2057                 switch (err) {
2058                 case 0:
2059                         ++printed;
2060                         if (context) {
2061                                 printed += queue_len;
2062                                 queue = NULL;
2063                                 queue_len = 0;
2064                         }
2065                         break;
2066                 case 1:
2067                         /* filtered by max_lines */
2068                         ++more;
2069                         break;
2070                 case -1:
2071                 default:
2072                         /*
2073                          * Filtered by min_pcnt or non IP lines when
2074                          * context != 0
2075                          */
2076                         if (!context)
2077                                 break;
2078                         if (queue_len == context)
2079                                 queue = list_entry(queue->node.next, typeof(*queue), node);
2080                         else
2081                                 ++queue_len;
2082                         break;
2083                 }
2084         }
2085 
2086         free(filename);
2087 
2088         return more;
2089 }
2090 
2091 static void FILE__set_percent_color(void *fp __maybe_unused,
2092                                     double percent __maybe_unused,
2093                                     bool current __maybe_unused)
2094 {
2095 }
2096 
2097 static int FILE__set_jumps_percent_color(void *fp __maybe_unused,
2098                                          int nr __maybe_unused, bool current __maybe_unused)
2099 {
2100         return 0;
2101 }
2102 
2103 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused)
2104 {
2105         return 0;
2106 }
2107 
2108 static void FILE__printf(void *fp, const char *fmt, ...)
2109 {
2110         va_list args;
2111 
2112         va_start(args, fmt);
2113         vfprintf(fp, fmt, args);
2114         va_end(args);
2115 }
2116 
2117 static void FILE__write_graph(void *fp, int graph)
2118 {
2119         const char *s;
2120         switch (graph) {
2121 
2122         case DARROW_CHAR: s = "↓"; break;
2123         case UARROW_CHAR: s = "↑"; break;
2124         case LARROW_CHAR: s = "←"; break;
2125         case RARROW_CHAR: s = "→"; break;
2126         default:                s = "?"; break;
2127         }
2128 
2129         fputs(s, fp);
2130 }
2131 
2132 int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp)
2133 {
2134         struct annotation *notes = symbol__annotation(sym);
2135         struct annotation_write_ops ops = {
2136                 .first_line              = true,
2137                 .obj                     = fp,
2138                 .set_color               = FILE__set_color,
2139                 .set_percent_color       = FILE__set_percent_color,
2140                 .set_jumps_percent_color = FILE__set_jumps_percent_color,
2141                 .printf                  = FILE__printf,
2142                 .write_graph             = FILE__write_graph,
2143         };
2144         struct annotation_line *al;
2145 
2146         list_for_each_entry(al, &notes->src->source, node) {
2147                 if (annotation_line__filter(al, notes))
2148                         continue;
2149                 annotation_line__write(al, notes, &ops);
2150                 fputc('\n', fp);
2151                 ops.first_line = false;
2152         }
2153 
2154         return 0;
2155 }
2156 
2157 int map_symbol__annotation_dump(struct map_symbol *ms, struct perf_evsel *evsel)
2158 {
2159         const char *ev_name = perf_evsel__name(evsel);
2160         char buf[1024];
2161         char *filename;
2162         int err = -1;
2163         FILE *fp;
2164 
2165         if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0)
2166                 return -1;
2167 
2168         fp = fopen(filename, "w");
2169         if (fp == NULL)
2170                 goto out_free_filename;
2171 
2172         if (perf_evsel__is_group_event(evsel)) {
2173                 perf_evsel__group_desc(evsel, buf, sizeof(buf));
2174                 ev_name = buf;
2175         }
2176 
2177         fprintf(fp, "%s() %s\nEvent: %s\n\n",
2178                 ms->sym->name, ms->map->dso->long_name, ev_name);
2179         symbol__annotate_fprintf2(ms->sym, fp);
2180 
2181         fclose(fp);
2182         err = 0;
2183 out_free_filename:
2184         free(filename);
2185         return err;
2186 }
2187 
2188 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
2189 {
2190         struct annotation *notes = symbol__annotation(sym);
2191         struct sym_hist *h = annotation__histogram(notes, evidx);
2192 
2193         memset(h, 0, notes->src->sizeof_sym_hist);
2194 }
2195 
2196 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
2197 {
2198         struct annotation *notes = symbol__annotation(sym);
2199         struct sym_hist *h = annotation__histogram(notes, evidx);
2200         int len = symbol__size(sym), offset;
2201 
2202         h->nr_samples = 0;
2203         for (offset = 0; offset < len; ++offset) {
2204                 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8;
2205                 h->nr_samples += h->addr[offset].nr_samples;
2206         }
2207 }
2208 
2209 void annotated_source__purge(struct annotated_source *as)
2210 {
2211         struct annotation_line *al, *n;
2212 
2213         list_for_each_entry_safe(al, n, &as->source, node) {
2214                 list_del(&al->node);
2215                 disasm_line__free(disasm_line(al));
2216         }
2217 }
2218 
2219 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
2220 {
2221         size_t printed;
2222 
2223         if (dl->al.offset == -1)
2224                 return fprintf(fp, "%s\n", dl->al.line);
2225 
2226         printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name);
2227 
2228         if (dl->ops.raw[0] != '\0') {
2229                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
2230                                    dl->ops.raw);
2231         }
2232 
2233         return printed + fprintf(fp, "\n");
2234 }
2235 
2236 size_t disasm__fprintf(struct list_head *head, FILE *fp)
2237 {
2238         struct disasm_line *pos;
2239         size_t printed = 0;
2240 
2241         list_for_each_entry(pos, head, al.node)
2242                 printed += disasm_line__fprintf(pos, fp);
2243 
2244         return printed;
2245 }
2246 
2247 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym)
2248 {
2249         if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) ||
2250             !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 ||
2251             dl->ops.target.offset >= (s64)symbol__size(sym))
2252                 return false;
2253 
2254         return true;
2255 }
2256 
2257 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym)
2258 {
2259         u64 offset, size = symbol__size(sym);
2260 
2261         /* PLT symbols contain external offsets */
2262         if (strstr(sym->name, "@plt"))
2263                 return;
2264 
2265         for (offset = 0; offset < size; ++offset) {
2266                 struct annotation_line *al = notes->offsets[offset];
2267                 struct disasm_line *dl;
2268 
2269                 dl = disasm_line(al);
2270 
2271                 if (!disasm_line__is_valid_local_jump(dl, sym))
2272                         continue;
2273 
2274                 al = notes->offsets[dl->ops.target.offset];
2275 
2276                 /*
2277                  * FIXME: Oops, no jump target? Buggy disassembler? Or do we
2278                  * have to adjust to the previous offset?
2279                  */
2280                 if (al == NULL)
2281                         continue;
2282 
2283                 if (++al->jump_sources > notes->max_jump_sources)
2284                         notes->max_jump_sources = al->jump_sources;
2285 
2286                 ++notes->nr_jumps;
2287         }
2288 }
2289 
2290 void annotation__set_offsets(struct annotation *notes, s64 size)
2291 {
2292         struct annotation_line *al;
2293 
2294         notes->max_line_len = 0;
2295 
2296         list_for_each_entry(al, &notes->src->source, node) {
2297                 size_t line_len = strlen(al->line);
2298 
2299                 if (notes->max_line_len < line_len)
2300                         notes->max_line_len = line_len;
2301                 al->idx = notes->nr_entries++;
2302                 if (al->offset != -1) {
2303                         al->idx_asm = notes->nr_asm_entries++;
2304                         /*
2305                          * FIXME: short term bandaid to cope with assembly
2306                          * routines that comes with labels in the same column
2307                          * as the address in objdump, sigh.
2308                          *
2309                          * E.g. copy_user_generic_unrolled
2310                          */
2311                         if (al->offset < size)
2312                                 notes->offsets[al->offset] = al;
2313                 } else
2314                         al->idx_asm = -1;
2315         }
2316 }
2317 
2318 static inline int width_jumps(int n)
2319 {
2320         if (n >= 100)
2321                 return 5;
2322         if (n / 10)
2323                 return 2;
2324         return 1;
2325 }
2326 
2327 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym)
2328 {
2329         notes->widths.addr = notes->widths.target =
2330                 notes->widths.min_addr = hex_width(symbol__size(sym));
2331         notes->widths.max_addr = hex_width(sym->end);
2332         notes->widths.jumps = width_jumps(notes->max_jump_sources);
2333 }
2334 
2335 void annotation__update_column_widths(struct annotation *notes)
2336 {
2337         if (notes->options->use_offset)
2338                 notes->widths.target = notes->widths.min_addr;
2339         else
2340                 notes->widths.target = notes->widths.max_addr;
2341 
2342         notes->widths.addr = notes->widths.target;
2343 
2344         if (notes->options->show_nr_jumps)
2345                 notes->widths.addr += notes->widths.jumps + 1;
2346 }
2347 
2348 static void annotation__calc_lines(struct annotation *notes, struct map *map,
2349                                   struct rb_root *root)
2350 {
2351         struct annotation_line *al;
2352         struct rb_root tmp_root = RB_ROOT;
2353 
2354         list_for_each_entry(al, &notes->src->source, node) {
2355                 double percent_max = 0.0;
2356                 int i;
2357 
2358                 for (i = 0; i < al->samples_nr; i++) {
2359                         struct annotation_data *sample;
2360 
2361                         sample = &al->samples[i];
2362 
2363                         if (sample->percent > percent_max)
2364                                 percent_max = sample->percent;
2365                 }
2366 
2367                 if (percent_max <= 0.5)
2368                         continue;
2369 
2370                 al->path = get_srcline(map->dso, notes->start + al->offset, NULL,
2371                                        false, true, notes->start + al->offset);
2372                 insert_source_line(&tmp_root, al);
2373         }
2374 
2375         resort_source_line(root, &tmp_root);
2376 }
2377 
2378 static void symbol__calc_lines(struct symbol *sym, struct map *map,
2379                               struct rb_root *root)
2380 {
2381         struct annotation *notes = symbol__annotation(sym);
2382 
2383         annotation__calc_lines(notes, map, root);
2384 }
2385 
2386 int symbol__tty_annotate2(struct symbol *sym, struct map *map,
2387                           struct perf_evsel *evsel,
2388                           struct annotation_options *opts)
2389 {
2390         struct dso *dso = map->dso;
2391         struct rb_root source_line = RB_ROOT;
2392         struct annotation *notes = symbol__annotation(sym);
2393         char buf[1024];
2394 
2395         if (symbol__annotate2(sym, map, evsel, opts, NULL) < 0)
2396                 return -1;
2397 
2398         if (opts->print_lines) {
2399                 srcline_full_filename = opts->full_path;
2400                 symbol__calc_lines(sym, map, &source_line);
2401                 print_summary(&source_line, dso->long_name);
2402         }
2403 
2404         annotation__scnprintf_samples_period(notes, buf, sizeof(buf), evsel);
2405         fprintf(stdout, "%s\n%s() %s\n", buf, sym->name, dso->long_name);
2406         symbol__annotate_fprintf2(sym, stdout);
2407 
2408         annotated_source__purge(symbol__annotation(sym)->src);
2409 
2410         return 0;
2411 }
2412 
2413 int symbol__tty_annotate(struct symbol *sym, struct map *map,
2414                          struct perf_evsel *evsel,
2415                          struct annotation_options *opts)
2416 {
2417         struct dso *dso = map->dso;
2418         struct rb_root source_line = RB_ROOT;
2419 
2420         if (symbol__annotate(sym, map, evsel, 0, opts, NULL) < 0)
2421                 return -1;
2422 
2423         symbol__calc_percent(sym, evsel);
2424 
2425         if (opts->print_lines) {
2426                 srcline_full_filename = opts->full_path;
2427                 symbol__calc_lines(sym, map, &source_line);
2428                 print_summary(&source_line, dso->long_name);
2429         }
2430 
2431         symbol__annotate_printf(sym, map, evsel, opts);
2432 
2433         annotated_source__purge(symbol__annotation(sym)->src);
2434 
2435         return 0;
2436 }
2437 
2438 bool ui__has_annotation(void)
2439 {
2440         return use_browser == 1 && perf_hpp_list.sym;
2441 }
2442 
2443 
2444 double annotation_line__max_percent(struct annotation_line *al, struct annotation *notes)
2445 {
2446         double percent_max = 0.0;
2447         int i;
2448 
2449         for (i = 0; i < notes->nr_events; i++) {
2450                 if (al->samples[i].percent > percent_max)
2451                         percent_max = al->samples[i].percent;
2452         }
2453 
2454         return percent_max;
2455 }
2456 
2457 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes,
2458                                void *obj, char *bf, size_t size,
2459                                void (*obj__printf)(void *obj, const char *fmt, ...),
2460                                void (*obj__write_graph)(void *obj, int graph))
2461 {
2462         if (dl->ins.ops && dl->ins.ops->scnprintf) {
2463                 if (ins__is_jump(&dl->ins)) {
2464                         bool fwd;
2465 
2466                         if (dl->ops.target.outside)
2467                                 goto call_like;
2468                         fwd = dl->ops.target.offset > dl->al.offset;
2469                         obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR);
2470                         obj__printf(obj, " ");
2471                 } else if (ins__is_call(&dl->ins)) {
2472 call_like:
2473                         obj__write_graph(obj, RARROW_CHAR);
2474                         obj__printf(obj, " ");
2475                 } else if (ins__is_ret(&dl->ins)) {
2476                         obj__write_graph(obj, LARROW_CHAR);
2477                         obj__printf(obj, " ");
2478                 } else {
2479                         obj__printf(obj, "  ");
2480                 }
2481         } else {
2482                 obj__printf(obj, "  ");
2483         }
2484 
2485         disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset);
2486 }
2487 
2488 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes,
2489                                      bool first_line, bool current_entry, bool change_color, int width,
2490                                      void *obj,
2491                                      int  (*obj__set_color)(void *obj, int color),
2492                                      void (*obj__set_percent_color)(void *obj, double percent, bool current),
2493                                      int  (*obj__set_jumps_percent_color)(void *obj, int nr, bool current),
2494                                      void (*obj__printf)(void *obj, const char *fmt, ...),
2495                                      void (*obj__write_graph)(void *obj, int graph))
2496 
2497 {
2498         double percent_max = annotation_line__max_percent(al, notes);
2499         int pcnt_width = annotation__pcnt_width(notes),
2500             cycles_width = annotation__cycles_width(notes);
2501         bool show_title = false;
2502         char bf[256];
2503         int printed;
2504 
2505         if (first_line && (al->offset == -1 || percent_max == 0.0)) {
2506                 if (notes->have_cycles) {
2507                         if (al->ipc == 0.0 && al->cycles == 0)
2508                                 show_title = true;
2509                 } else
2510                         show_title = true;
2511         }
2512 
2513         if (al->offset != -1 && percent_max != 0.0) {
2514                 int i;
2515 
2516                 for (i = 0; i < notes->nr_events; i++) {
2517                         obj__set_percent_color(obj, al->samples[i].percent, current_entry);
2518                         if (notes->options->show_total_period) {
2519                                 obj__printf(obj, "%11" PRIu64 " ", al->samples[i].he.period);
2520                         } else if (notes->options->show_nr_samples) {
2521                                 obj__printf(obj, "%6" PRIu64 " ",
2522                                                    al->samples[i].he.nr_samples);
2523                         } else {
2524                                 obj__printf(obj, "%6.2f ",
2525                                                    al->samples[i].percent);
2526                         }
2527                 }
2528         } else {
2529                 obj__set_percent_color(obj, 0, current_entry);
2530 
2531                 if (!show_title)
2532                         obj__printf(obj, "%-*s", pcnt_width, " ");
2533                 else {
2534                         obj__printf(obj, "%-*s", pcnt_width,
2535                                            notes->options->show_total_period ? "Period" :
2536                                            notes->options->show_nr_samples ? "Samples" : "Percent");
2537                 }
2538         }
2539 
2540         if (notes->have_cycles) {
2541                 if (al->ipc)
2542                         obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc);
2543                 else if (!show_title)
2544                         obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " ");
2545                 else
2546                         obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC");
2547 
2548                 if (!notes->options->show_minmax_cycle) {
2549                         if (al->cycles)
2550                                 obj__printf(obj, "%*" PRIu64 " ",
2551                                            ANNOTATION__CYCLES_WIDTH - 1, al->cycles);
2552                         else if (!show_title)
2553                                 obj__printf(obj, "%*s",
2554                                             ANNOTATION__CYCLES_WIDTH, " ");
2555                         else
2556                                 obj__printf(obj, "%*s ",
2557                                             ANNOTATION__CYCLES_WIDTH - 1,
2558                                             "Cycle");
2559                 } else {
2560                         if (al->cycles) {
2561                                 char str[32];
2562 
2563                                 scnprintf(str, sizeof(str),
2564                                         "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")",
2565                                         al->cycles, al->cycles_min,
2566                                         al->cycles_max);
2567 
2568                                 obj__printf(obj, "%*s ",
2569                                             ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
2570                                             str);
2571                         } else if (!show_title)
2572                                 obj__printf(obj, "%*s",
2573                                             ANNOTATION__MINMAX_CYCLES_WIDTH,
2574                                             " ");
2575                         else
2576                                 obj__printf(obj, "%*s ",
2577                                             ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
2578                                             "Cycle(min/max)");
2579                 }
2580         }
2581 
2582         obj__printf(obj, " ");
2583 
2584         if (!*al->line)
2585                 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " ");
2586         else if (al->offset == -1) {
2587                 if (al->line_nr && notes->options->show_linenr)
2588                         printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr);
2589                 else
2590                         printed = scnprintf(bf, sizeof(bf), "%-*s  ", notes->widths.addr, " ");
2591                 obj__printf(obj, bf);
2592                 obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line);
2593         } else {
2594                 u64 addr = al->offset;
2595                 int color = -1;
2596 
2597                 if (!notes->options->use_offset)
2598                         addr += notes->start;
2599 
2600                 if (!notes->options->use_offset) {
2601                         printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
2602                 } else {
2603                         if (al->jump_sources &&
2604                             notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) {
2605                                 if (notes->options->show_nr_jumps) {
2606                                         int prev;
2607                                         printed = scnprintf(bf, sizeof(bf), "%*d ",
2608                                                             notes->widths.jumps,
2609                                                             al->jump_sources);
2610                                         prev = obj__set_jumps_percent_color(obj, al->jump_sources,
2611                                                                             current_entry);
2612                                         obj__printf(obj, bf);
2613                                         obj__set_color(obj, prev);
2614                                 }
2615 print_addr:
2616                                 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
2617                                                     notes->widths.target, addr);
2618                         } else if (ins__is_call(&disasm_line(al)->ins) &&
2619                                    notes->options->offset_level >= ANNOTATION__OFFSET_CALL) {
2620                                 goto print_addr;
2621                         } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) {
2622                                 goto print_addr;
2623                         } else {
2624                                 printed = scnprintf(bf, sizeof(bf), "%-*s  ",
2625                                                     notes->widths.addr, " ");
2626                         }
2627                 }
2628 
2629                 if (change_color)
2630                         color = obj__set_color(obj, HE_COLORSET_ADDR);
2631                 obj__printf(obj, bf);
2632                 if (change_color)
2633                         obj__set_color(obj, color);
2634 
2635                 disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph);
2636 
2637                 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf);
2638         }
2639 
2640 }
2641 
2642 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
2643                             struct annotation_write_ops *ops)
2644 {
2645         __annotation_line__write(al, notes, ops->first_line, ops->current_entry,
2646                                  ops->change_color, ops->width, ops->obj,
2647                                  ops->set_color, ops->set_percent_color,
2648                                  ops->set_jumps_percent_color, ops->printf,
2649                                  ops->write_graph);
2650 }
2651 
2652 int symbol__annotate2(struct symbol *sym, struct map *map, struct perf_evsel *evsel,
2653                       struct annotation_options *options, struct arch **parch)
2654 {
2655         struct annotation *notes = symbol__annotation(sym);
2656         size_t size = symbol__size(sym);
2657         int nr_pcnt = 1, err;
2658 
2659         notes->offsets = zalloc(size * sizeof(struct annotation_line *));
2660         if (notes->offsets == NULL)
2661                 return -1;
2662 
2663         if (perf_evsel__is_group_event(evsel))
2664                 nr_pcnt = evsel->nr_members;
2665 
2666         err = symbol__annotate(sym, map, evsel, 0, options, parch);
2667         if (err)
2668                 goto out_free_offsets;
2669 
2670         notes->options = options;
2671 
2672         symbol__calc_percent(sym, evsel);
2673 
2674         notes->start = map__rip_2objdump(map, sym->start);
2675 
2676         annotation__set_offsets(notes, size);
2677         annotation__mark_jump_targets(notes, sym);
2678         annotation__compute_ipc(notes, size);
2679         annotation__init_column_widths(notes, sym);
2680         notes->nr_events = nr_pcnt;
2681 
2682         annotation__update_column_widths(notes);
2683 
2684         return 0;
2685 
2686 out_free_offsets:
2687         zfree(&notes->offsets);
2688         return -1;
2689 }
2690 
2691 int __annotation__scnprintf_samples_period(struct annotation *notes,
2692                                            char *bf, size_t size,
2693                                            struct perf_evsel *evsel,
2694                                            bool show_freq)
2695 {
2696         const char *ev_name = perf_evsel__name(evsel);
2697         char buf[1024], ref[30] = " show reference callgraph, ";
2698         char sample_freq_str[64] = "";
2699         unsigned long nr_samples = 0;
2700         int nr_members = 1;
2701         bool enable_ref = false;
2702         u64 nr_events = 0;
2703         char unit;
2704         int i;
2705 
2706         if (perf_evsel__is_group_event(evsel)) {
2707                 perf_evsel__group_desc(evsel, buf, sizeof(buf));
2708                 ev_name = buf;
2709                 nr_members = evsel->nr_members;
2710         }
2711 
2712         for (i = 0; i < nr_members; i++) {
2713                 struct sym_hist *ah = annotation__histogram(notes, evsel->idx + i);
2714 
2715                 nr_samples += ah->nr_samples;
2716                 nr_events  += ah->period;
2717         }
2718 
2719         if (symbol_conf.show_ref_callgraph && strstr(ev_name, "call-graph=no"))
2720                 enable_ref = true;
2721 
2722         if (show_freq)
2723                 scnprintf(sample_freq_str, sizeof(sample_freq_str), " %d Hz,", evsel->attr.sample_freq);
2724 
2725         nr_samples = convert_unit(nr_samples, &unit);
2726         return scnprintf(bf, size, "Samples: %lu%c of event%s '%s',%s%sEvent count (approx.): %" PRIu64,
2727                          nr_samples, unit, evsel->nr_members > 1 ? "s" : "",
2728                          ev_name, sample_freq_str, enable_ref ? ref : " ", nr_events);
2729 }
2730 
2731 #define ANNOTATION__CFG(n) \
2732         { .name = #n, .value = &annotation__default_options.n, }
2733 
2734 /*
2735  * Keep the entries sorted, they are bsearch'ed
2736  */
2737 static struct annotation_config {
2738         const char *name;
2739         void *value;
2740 } annotation__configs[] = {
2741         ANNOTATION__CFG(hide_src_code),
2742         ANNOTATION__CFG(jump_arrows),
2743         ANNOTATION__CFG(offset_level),
2744         ANNOTATION__CFG(show_linenr),
2745         ANNOTATION__CFG(show_nr_jumps),
2746         ANNOTATION__CFG(show_nr_samples),
2747         ANNOTATION__CFG(show_total_period),
2748         ANNOTATION__CFG(use_offset),
2749 };
2750 
2751 #undef ANNOTATION__CFG
2752 
2753 static int annotation_config__cmp(const void *name, const void *cfgp)
2754 {
2755         const struct annotation_config *cfg = cfgp;
2756 
2757         return strcmp(name, cfg->name);
2758 }
2759 
2760 static int annotation__config(const char *var, const char *value,
2761                             void *data __maybe_unused)
2762 {
2763         struct annotation_config *cfg;
2764         const char *name;
2765 
2766         if (!strstarts(var, "annotate."))
2767                 return 0;
2768 
2769         name = var + 9;
2770         cfg = bsearch(name, annotation__configs, ARRAY_SIZE(annotation__configs),
2771                       sizeof(struct annotation_config), annotation_config__cmp);
2772 
2773         if (cfg == NULL)
2774                 pr_debug("%s variable unknown, ignoring...", var);
2775         else if (strcmp(var, "annotate.offset_level") == 0) {
2776                 perf_config_int(cfg->value, name, value);
2777 
2778                 if (*(int *)cfg->value > ANNOTATION__MAX_OFFSET_LEVEL)
2779                         *(int *)cfg->value = ANNOTATION__MAX_OFFSET_LEVEL;
2780                 else if (*(int *)cfg->value < ANNOTATION__MIN_OFFSET_LEVEL)
2781                         *(int *)cfg->value = ANNOTATION__MIN_OFFSET_LEVEL;
2782         } else {
2783                 *(bool *)cfg->value = perf_config_bool(name, value);
2784         }
2785         return 0;
2786 }
2787 
2788 void annotation_config__init(void)
2789 {
2790         perf_config(annotation__config, NULL);
2791 
2792         annotation__default_options.show_total_period = symbol_conf.show_total_period;
2793         annotation__default_options.show_nr_samples   = symbol_conf.show_nr_samples;
2794 }
2795 

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