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	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  *
  * Parts came from builtin-annotate.c, see those files for further
  * copyright notes.
  */
 
 #include <errno.h>
 #include <inttypes.h>
 #include <libgen.h>
 #include <stdlib.h>
 #include "util.h" // hex_width()
 #include "ui/ui.h"
 #include "sort.h"
 #include "build-id.h"
 #include "color.h"
 #include "config.h"
 #include "dso.h"
 #include "env.h"
 #include "map.h"
 #include "maps.h"
 #include "symbol.h"
 #include "srcline.h"
 #include "units.h"
 #include "debug.h"
 #include "annotate.h"
 #include "evsel.h"
 #include "evlist.h"
 #include "bpf-event.h"
 #include "bpf-utils.h"
 #include "block-range.h"
 #include "string2.h"
 #include "util/event.h"
 #include "arch/common.h"
 #include "namespaces.h"
 #include <regex.h>
 #include <pthread.h>
 #include <linux/bitops.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <subcmd/parse-options.h>
 #include <subcmd/run-command.h>
 
 /* FIXME: For the HE_COLORSET */
 #include "ui/browser.h"
 
 /*
  * FIXME: Using the same values as slang.h,
  * but that header may not be available everywhere
  */
 #define LARROW_CHAR ((unsigned char)',')
 #define RARROW_CHAR ((unsigned char)'+')
 #define DARROW_CHAR ((unsigned char)'.')
 #define UARROW_CHAR ((unsigned char)'-')
 
 #include <linux/ctype.h>
 
 struct annotation_options annotation__default_options = {
     .use_offset     = true,
     .jump_arrows    = true,
     .annotate_src   = true,
     .offset_level   = ANNOTATION__OFFSET_JUMP_TARGETS,
     .percent_type   = PERCENT_PERIOD_LOCAL,
 };
 
 static regex_t   file_lineno;
 
 static struct ins_ops *ins__find(struct arch *arch, const char *name);
 static void ins__sort(struct arch *arch);
 static int disasm_line__parse(char *line, const char **namep, char **rawp);
 
 struct arch {
     const char  *name;
     struct ins  *instructions;
     size_t      nr_instructions;
     size_t      nr_instructions_allocated;
     struct ins_ops  *(*associate_instruction_ops)(struct arch *arch, const char *name);
     bool        sorted_instructions;
     bool        initialized;
     void        *priv;
     unsigned int    model;
     unsigned int    family;
     int     (*init)(struct arch *arch, char *cpuid);
     bool        (*ins_is_fused)(struct arch *arch, const char *ins1,
                     const char *ins2);
     struct      {
         char comment_char;
         char skip_functions_char;
     } objdump;
 };
 
 static struct ins_ops call_ops;
 static struct ins_ops dec_ops;
 static struct ins_ops jump_ops;
 static struct ins_ops mov_ops;
 static struct ins_ops nop_ops;
 static struct ins_ops lock_ops;
 static struct ins_ops ret_ops;
 
 static int arch__grow_instructions(struct arch *arch)
 {
     struct ins *new_instructions;
     size_t new_nr_allocated;
 
     if (arch->nr_instructions_allocated == 0 && arch->instructions)
         goto grow_from_non_allocated_table;
 
     new_nr_allocated = arch->nr_instructions_allocated + 128;
     new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
     if (new_instructions == NULL)
         return -1;
 
 out_update_instructions:
     arch->instructions = new_instructions;
     arch->nr_instructions_allocated = new_nr_allocated;
     return 0;
 
 grow_from_non_allocated_table:
     new_nr_allocated = arch->nr_instructions + 128;
     new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
     if (new_instructions == NULL)
         return -1;
 
     memcpy(new_instructions, arch->instructions, arch->nr_instructions);
     goto out_update_instructions;
 }
 
 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
 {
     struct ins *ins;
 
     if (arch->nr_instructions == arch->nr_instructions_allocated &&
         arch__grow_instructions(arch))
         return -1;
 
     ins = &arch->instructions[arch->nr_instructions];
     ins->name = strdup(name);
     if (!ins->name)
         return -1;
 
     ins->ops  = ops;
     arch->nr_instructions++;
 
     ins__sort(arch);
     return 0;
 }
 
 #include "arch/arc/annotate/instructions.c"
 #include "arch/arm/annotate/instructions.c"
 #include "arch/arm64/annotate/instructions.c"
 #include "arch/csky/annotate/instructions.c"
 #include "arch/mips/annotate/instructions.c"
 #include "arch/x86/annotate/instructions.c"
 #include "arch/powerpc/annotate/instructions.c"
 #include "arch/riscv64/annotate/instructions.c"
 #include "arch/s390/annotate/instructions.c"
 #include "arch/sparc/annotate/instructions.c"
 
 static struct arch architectures[] = {
     {
         .name = "arc",
         .init = arc__annotate_init,
     },
     {
         .name = "arm",
         .init = arm__annotate_init,
     },
     {
         .name = "arm64",
         .init = arm64__annotate_init,
     },
     {
         .name = "csky",
         .init = csky__annotate_init,
     },
     {
         .name = "mips",
         .init = mips__annotate_init,
         .objdump = {
             .comment_char = '#',
         },
     },
     {
         .name = "x86",
         .init = x86__annotate_init,
         .instructions = x86__instructions,
         .nr_instructions = ARRAY_SIZE(x86__instructions),
         .objdump =  {
             .comment_char = '#',
         },
     },
     {
         .name = "powerpc",
         .init = powerpc__annotate_init,
     },
     {
         .name = "riscv64",
         .init = riscv64__annotate_init,
     },
     {
         .name = "s390",
         .init = s390__annotate_init,
         .objdump =  {
             .comment_char = '#',
         },
     },
     {
         .name = "sparc",
         .init = sparc__annotate_init,
         .objdump = {
             .comment_char = '#',
         },
     },
 };
 
 static void ins__delete(struct ins_operands *ops)
 {
     if (ops == NULL)
         return;
     zfree(&ops->source.raw);
     zfree(&ops->source.name);
     zfree(&ops->target.raw);
     zfree(&ops->target.name);
 }
 
 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
                   struct ins_operands *ops, int max_ins_name)
 {
     return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->raw);
 }
 
 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
            struct ins_operands *ops, int max_ins_name)
 {
     if (ins->ops->scnprintf)
         return ins->ops->scnprintf(ins, bf, size, ops, max_ins_name);
 
     return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
 }
 
 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2)
 {
     if (!arch || !arch->ins_is_fused)
         return false;
 
     return arch->ins_is_fused(arch, ins1, ins2);
 }
 
 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
 {
     char *endptr, *tok, *name;
     struct map *map = ms->map;
     struct addr_map_symbol target = {
         .ms = { .map = map, },
     };
 
     ops->target.addr = strtoull(ops->raw, &endptr, 16);
 
     name = strchr(endptr, '<');
     if (name == NULL)
         goto indirect_call;
 
     name++;
 
     if (arch->objdump.skip_functions_char &&
         strchr(name, arch->objdump.skip_functions_char))
         return -1;
 
     tok = strchr(name, '>');
     if (tok == NULL)
         return -1;
 
     *tok = '\0';
     ops->target.name = strdup(name);
     *tok = '>';
 
     if (ops->target.name == NULL)
         return -1;
 find_target:
     target.addr = map__objdump_2mem(map, ops->target.addr);
 
     if (maps__find_ams(ms->maps, &target) == 0 &&
         map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr)
         ops->target.sym = target.ms.sym;
 
     return 0;
 
 indirect_call:
     tok = strchr(endptr, '*');
     if (tok != NULL) {
         endptr++;
 
         /* Indirect call can use a non-rip register and offset: callq  *0x8(%rbx).
          * Do not parse such instruction.  */
         if (strstr(endptr, "(%r") == NULL)
             ops->target.addr = strtoull(endptr, NULL, 16);
     }
     goto find_target;
 }
 
 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
                struct ins_operands *ops, int max_ins_name)
 {
     if (ops->target.sym)
         return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name);
 
     if (ops->target.addr == 0)
         return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
 
     if (ops->target.name)
         return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.name);
 
     return scnprintf(bf, size, "%-*s *%" PRIx64, max_ins_name, ins->name, ops->target.addr);
 }
 
 static struct ins_ops call_ops = {
     .parse     = call__parse,
     .scnprintf = call__scnprintf,
 };
 
 bool ins__is_call(const struct ins *ins)
 {
     return ins->ops == &call_ops || ins->ops == &s390_call_ops;
 }
 
 /*
  * Prevents from matching commas in the comment section, e.g.:
  * ffff200008446e70:       b.cs    ffff2000084470f4 <generic_exec_single+0x314>  // b.hs, b.nlast
  *
  * and skip comma as part of function arguments, e.g.:
  * 1d8b4ac <linemap_lookup(line_maps const*, unsigned int)+0xcc>
  */
 static inline const char *validate_comma(const char *c, struct ins_operands *ops)
 {
     if (ops->raw_comment && c > ops->raw_comment)
         return NULL;
 
     if (ops->raw_func_start && c > ops->raw_func_start)
         return NULL;
 
     return c;
 }
 
 static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
 {
     struct map *map = ms->map;
     struct symbol *sym = ms->sym;
     struct addr_map_symbol target = {
         .ms = { .map = map, },
     };
     const char *c = strchr(ops->raw, ',');
     u64 start, end;
 
     ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char);
     ops->raw_func_start = strchr(ops->raw, '<');
 
     c = validate_comma(c, ops);
 
     /*
      * Examples of lines to parse for the _cpp_lex_token@@Base
      * function:
      *
      * 1159e6c: jne    115aa32 <_cpp_lex_token@@Base+0xf92>
      * 1159e8b: jne    c469be <cpp_named_operator2name@@Base+0xa72>
      *
      * The first is a jump to an offset inside the same function,
      * the second is to another function, i.e. that 0xa72 is an
      * offset in the cpp_named_operator2name@@base function.
      */
     /*
      * skip over possible up to 2 operands to get to address, e.g.:
      * tbnz  w0, #26, ffff0000083cd190 <security_file_permission+0xd0>
      */
     if (c++ != NULL) {
         ops->target.addr = strtoull(c, NULL, 16);
         if (!ops->target.addr) {
             c = strchr(c, ',');
             c = validate_comma(c, ops);
             if (c++ != NULL)
                 ops->target.addr = strtoull(c, NULL, 16);
         }
     } else {
         ops->target.addr = strtoull(ops->raw, NULL, 16);
     }
 
     target.addr = map__objdump_2mem(map, ops->target.addr);
     start = map->unmap_ip(map, sym->start),
     end = map->unmap_ip(map, sym->end);
 
     ops->target.outside = target.addr < start || target.addr > end;
 
     /*
      * FIXME: things like this in _cpp_lex_token (gcc's cc1 program):
 
         cpp_named_operator2name@@Base+0xa72
 
      * Point to a place that is after the cpp_named_operator2name
      * boundaries, i.e.  in the ELF symbol table for cc1
      * cpp_named_operator2name is marked as being 32-bytes long, but it in
      * fact is much larger than that, so we seem to need a symbols__find()
      * routine that looks for >= current->start and  < next_symbol->start,
      * possibly just for C++ objects?
      *
      * For now lets just make some progress by marking jumps to outside the
      * current function as call like.
      *
      * Actual navigation will come next, with further understanding of how
      * the symbol searching and disassembly should be done.
      */
     if (maps__find_ams(ms->maps, &target) == 0 &&
         map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr)
         ops->target.sym = target.ms.sym;
 
     if (!ops->target.outside) {
         ops->target.offset = target.addr - start;
         ops->target.offset_avail = true;
     } else {
         ops->target.offset_avail = false;
     }
 
     return 0;
 }
 
 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
                struct ins_operands *ops, int max_ins_name)
 {
     const char *c;
 
     if (!ops->target.addr || ops->target.offset < 0)
         return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
 
     if (ops->target.outside && ops->target.sym != NULL)
         return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name);
 
     c = strchr(ops->raw, ',');
     c = validate_comma(c, ops);
 
     if (c != NULL) {
         const char *c2 = strchr(c + 1, ',');
 
         c2 = validate_comma(c2, ops);
         /* check for 3-op insn */
         if (c2 != NULL)
             c = c2;
         c++;
 
         /* mirror arch objdump's space-after-comma style */
         if (*c == ' ')
             c++;
     }
 
     return scnprintf(bf, size, "%-*s %.*s%" PRIx64, max_ins_name,
              ins->name, c ? c - ops->raw : 0, ops->raw,
              ops->target.offset);
 }
 
 static struct ins_ops jump_ops = {
     .parse     = jump__parse,
     .scnprintf = jump__scnprintf,
 };
 
 bool ins__is_jump(const struct ins *ins)
 {
     return ins->ops == &jump_ops;
 }
 
 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 {
     char *endptr, *name, *t;
 
     if (strstr(raw, "(%rip)") == NULL)
         return 0;
 
     *addrp = strtoull(comment, &endptr, 16);
     if (endptr == comment)
         return 0;
     name = strchr(endptr, '<');
     if (name == NULL)
         return -1;
 
     name++;
 
     t = strchr(name, '>');
     if (t == NULL)
         return 0;
 
     *t = '\0';
     *namep = strdup(name);
     *t = '>';
 
     return 0;
 }
 
 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
 {
     ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
     if (ops->locked.ops == NULL)
         return 0;
 
     if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
         goto out_free_ops;
 
     ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
 
     if (ops->locked.ins.ops == NULL)
         goto out_free_ops;
 
     if (ops->locked.ins.ops->parse &&
         ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0)
         goto out_free_ops;
 
     return 0;
 
 out_free_ops:
     zfree(&ops->locked.ops);
     return 0;
 }
 
 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
                struct ins_operands *ops, int max_ins_name)
 {
     int printed;
 
     if (ops->locked.ins.ops == NULL)
         return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
 
     printed = scnprintf(bf, size, "%-*s ", max_ins_name, ins->name);
     return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
                     size - printed, ops->locked.ops, max_ins_name);
 }
 
 static void lock__delete(struct ins_operands *ops)
 {
     struct ins *ins = &ops->locked.ins;
 
     if (ins->ops && ins->ops->free)
         ins->ops->free(ops->locked.ops);
     else
         ins__delete(ops->locked.ops);
 
     zfree(&ops->locked.ops);
     zfree(&ops->target.raw);
     zfree(&ops->target.name);
 }
 
 static struct ins_ops lock_ops = {
     .free      = lock__delete,
     .parse     = lock__parse,
     .scnprintf = lock__scnprintf,
 };
 
 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
 {
     char *s = strchr(ops->raw, ','), *target, *comment, prev;
 
     if (s == NULL)
         return -1;
 
     *s = '\0';
     ops->source.raw = strdup(ops->raw);
     *s = ',';
 
     if (ops->source.raw == NULL)
         return -1;
 
     target = ++s;
     comment = strchr(s, arch->objdump.comment_char);
 
     if (comment != NULL)
         s = comment - 1;
     else
         s = strchr(s, '\0') - 1;
 
     while (s > target && isspace(s[0]))
         --s;
     s++;
     prev = *s;
     *s = '\0';
 
     ops->target.raw = strdup(target);
     *s = prev;
 
     if (ops->target.raw == NULL)
         goto out_free_source;
 
     if (comment == NULL)
         return 0;
 
     comment = skip_spaces(comment);
     comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name);
     comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
 
     return 0;
 
 out_free_source:
     zfree(&ops->source.raw);
     return -1;
 }
 
 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
                struct ins_operands *ops, int max_ins_name)
 {
     return scnprintf(bf, size, "%-*s %s,%s", max_ins_name, ins->name,
              ops->source.name ?: ops->source.raw,
              ops->target.name ?: ops->target.raw);
 }
 
 static struct ins_ops mov_ops = {
     .parse     = mov__parse,
     .scnprintf = mov__scnprintf,
 };
 
 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
 {
     char *target, *comment, *s, prev;
 
     target = s = ops->raw;
 
     while (s[0] != '\0' && !isspace(s[0]))
         ++s;
     prev = *s;
     *s = '\0';
 
     ops->target.raw = strdup(target);
     *s = prev;
 
     if (ops->target.raw == NULL)
         return -1;
 
     comment = strchr(s, arch->objdump.comment_char);
     if (comment == NULL)
         return 0;
 
     comment = skip_spaces(comment);
     comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
 
     return 0;
 }
 
 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
                struct ins_operands *ops, int max_ins_name)
 {
     return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name,
              ops->target.name ?: ops->target.raw);
 }
 
 static struct ins_ops dec_ops = {
     .parse     = dec__parse,
     .scnprintf = dec__scnprintf,
 };
 
 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
               struct ins_operands *ops __maybe_unused, int max_ins_name)
 {
     return scnprintf(bf, size, "%-*s", max_ins_name, "nop");
 }
 
 static struct ins_ops nop_ops = {
     .scnprintf = nop__scnprintf,
 };
 
 static struct ins_ops ret_ops = {
     .scnprintf = ins__raw_scnprintf,
 };
 
 bool ins__is_ret(const struct ins *ins)
 {
     return ins->ops == &ret_ops;
 }
 
 bool ins__is_lock(const struct ins *ins)
 {
     return ins->ops == &lock_ops;
 }
 
 static int ins__key_cmp(const void *name, const void *insp)
 {
     const struct ins *ins = insp;
 
     return strcmp(name, ins->name);
 }
 
 static int ins__cmp(const void *a, const void *b)
 {
     const struct ins *ia = a;
     const struct ins *ib = b;
 
     return strcmp(ia->name, ib->name);
 }
 
 static void ins__sort(struct arch *arch)
 {
     const int nmemb = arch->nr_instructions;
 
     qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
 }
 
 static struct ins_ops *__ins__find(struct arch *arch, const char *name)
 {
     struct ins *ins;
     const int nmemb = arch->nr_instructions;
 
     if (!arch->sorted_instructions) {
         ins__sort(arch);
         arch->sorted_instructions = true;
     }
 
     ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
     return ins ? ins->ops : NULL;
 }
 
 static struct ins_ops *ins__find(struct arch *arch, const char *name)
 {
     struct ins_ops *ops = __ins__find(arch, name);
 
     if (!ops && arch->associate_instruction_ops)
         ops = arch->associate_instruction_ops(arch, name);
 
     return ops;
 }
 
 static int arch__key_cmp(const void *name, const void *archp)
 {
     const struct arch *arch = archp;
 
     return strcmp(name, arch->name);
 }
 
 static int arch__cmp(const void *a, const void *b)
 {
     const struct arch *aa = a;
     const struct arch *ab = b;
 
     return strcmp(aa->name, ab->name);
 }
 
 static void arch__sort(void)
 {
     const int nmemb = ARRAY_SIZE(architectures);
 
     qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
 }
 
 static struct arch *arch__find(const char *name)
 {
     const int nmemb = ARRAY_SIZE(architectures);
     static bool sorted;
 
     if (!sorted) {
         arch__sort();
         sorted = true;
     }
 
     return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
 }
 
 static struct annotated_source *annotated_source__new(void)
 {
     struct annotated_source *src = zalloc(sizeof(*src));
 
     if (src != NULL)
         INIT_LIST_HEAD(&src->source);
 
     return src;
 }
 
 static __maybe_unused void annotated_source__delete(struct annotated_source *src)
 {
     if (src == NULL)
         return;
     zfree(&src->histograms);
     zfree(&src->cycles_hist);
     free(src);
 }
 
 static int annotated_source__alloc_histograms(struct annotated_source *src,
                           size_t size, int nr_hists)
 {
     size_t sizeof_sym_hist;
 
     /*
      * Add buffer of one element for zero length symbol.
      * When sample is taken from first instruction of
      * zero length symbol, perf still resolves it and
      * shows symbol name in perf report and allows to
      * annotate it.
      */
     if (size == 0)
         size = 1;
 
     /* Check for overflow when calculating sizeof_sym_hist */
     if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry))
         return -1;
 
     sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry));
 
     /* Check for overflow in zalloc argument */
     if (sizeof_sym_hist > SIZE_MAX / nr_hists)
         return -1;
 
     src->sizeof_sym_hist = sizeof_sym_hist;
     src->nr_histograms   = nr_hists;
     src->histograms      = calloc(nr_hists, sizeof_sym_hist) ;
     return src->histograms ? 0 : -1;
 }
 
 /* The cycles histogram is lazily allocated. */
 static int symbol__alloc_hist_cycles(struct symbol *sym)
 {
     struct annotation *notes = symbol__annotation(sym);
     const size_t size = symbol__size(sym);
 
     notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
     if (notes->src->cycles_hist == NULL)
         return -1;
     return 0;
 }
 
 void symbol__annotate_zero_histograms(struct symbol *sym)
 {
     struct annotation *notes = symbol__annotation(sym);
 
     pthread_mutex_lock(&notes->lock);
     if (notes->src != NULL) {
         memset(notes->src->histograms, 0,
                notes->src->nr_histograms * notes->src->sizeof_sym_hist);
         if (notes->src->cycles_hist)
             memset(notes->src->cycles_hist, 0,
                 symbol__size(sym) * sizeof(struct cyc_hist));
     }
     pthread_mutex_unlock(&notes->lock);
 }
 
 static int __symbol__account_cycles(struct cyc_hist *ch,
                     u64 start,
                     unsigned offset, unsigned cycles,
                     unsigned have_start)
 {
     /*
      * For now we can only account one basic block per
      * final jump. But multiple could be overlapping.
      * Always account the longest one. So when
      * a shorter one has been already seen throw it away.
      *
      * We separately always account the full cycles.
      */
     ch[offset].num_aggr++;
     ch[offset].cycles_aggr += cycles;
 
     if (cycles > ch[offset].cycles_max)
         ch[offset].cycles_max = cycles;
 
     if (ch[offset].cycles_min) {
         if (cycles && cycles < ch[offset].cycles_min)
             ch[offset].cycles_min = cycles;
     } else
         ch[offset].cycles_min = cycles;
 
     if (!have_start && ch[offset].have_start)
         return 0;
     if (ch[offset].num) {
         if (have_start && (!ch[offset].have_start ||
                    ch[offset].start > start)) {
             ch[offset].have_start = 0;
             ch[offset].cycles = 0;
             ch[offset].num = 0;
             if (ch[offset].reset < 0xffff)
                 ch[offset].reset++;
         } else if (have_start &&
                ch[offset].start < start)
             return 0;
     }
 
     if (ch[offset].num < NUM_SPARKS)
         ch[offset].cycles_spark[ch[offset].num] = cycles;
 
     ch[offset].have_start = have_start;
     ch[offset].start = start;
     ch[offset].cycles += cycles;
     ch[offset].num++;
     return 0;
 }
 
 static int __symbol__inc_addr_samples(struct map_symbol *ms,
                       struct annotated_source *src, int evidx, u64 addr,
                       struct perf_sample *sample)
 {
     struct symbol *sym = ms->sym;
     unsigned offset;
     struct sym_hist *h;
 
     pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, ms->map->unmap_ip(ms->map, addr));
 
     if ((addr < sym->start || addr >= sym->end) &&
         (addr != sym->end || sym->start != sym->end)) {
         pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
                __func__, __LINE__, sym->name, sym->start, addr, sym->end);
         return -ERANGE;
     }
 
     offset = addr - sym->start;
     h = annotated_source__histogram(src, evidx);
     if (h == NULL) {
         pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n",
              __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC);
         return -ENOMEM;
     }
     h->nr_samples++;
     h->addr[offset].nr_samples++;
     h->period += sample->period;
     h->addr[offset].period += sample->period;
 
     pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
           ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n",
           sym->start, sym->name, addr, addr - sym->start, evidx,
           h->addr[offset].nr_samples, h->addr[offset].period);
     return 0;
 }
 
 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym)
 {
     struct annotation *notes = symbol__annotation(sym);
 
     if (notes->src == NULL) {
         notes->src = annotated_source__new();
         if (notes->src == NULL)
             return NULL;
         goto alloc_cycles_hist;
     }
 
     if (!notes->src->cycles_hist) {
 alloc_cycles_hist:
         symbol__alloc_hist_cycles(sym);
     }
 
     return notes->src->cycles_hist;
 }
 
 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists)
 {
     struct annotation *notes = symbol__annotation(sym);
 
     if (notes->src == NULL) {
         notes->src = annotated_source__new();
         if (notes->src == NULL)
             return NULL;
         goto alloc_histograms;
     }
 
     if (notes->src->histograms == NULL) {
 alloc_histograms:
         annotated_source__alloc_histograms(notes->src, symbol__size(sym),
                            nr_hists);
     }
 
     return notes->src;
 }
 
 static int symbol__inc_addr_samples(struct map_symbol *ms,
                     struct evsel *evsel, u64 addr,
                     struct perf_sample *sample)
 {
     struct symbol *sym = ms->sym;
     struct annotated_source *src;
 
     if (sym == NULL)
         return 0;
     src = symbol__hists(sym, evsel->evlist->core.nr_entries);
     return src ? __symbol__inc_addr_samples(ms, src, evsel->core.idx, addr, sample) : 0;
 }
 
 static int symbol__account_cycles(u64 addr, u64 start,
                   struct symbol *sym, unsigned cycles)
 {
     struct cyc_hist *cycles_hist;
     unsigned offset;
 
     if (sym == NULL)
         return 0;
     cycles_hist = symbol__cycles_hist(sym);
     if (cycles_hist == NULL)
         return -ENOMEM;
     if (addr < sym->start || addr >= sym->end)
         return -ERANGE;
 
     if (start) {
         if (start < sym->start || start >= sym->end)
             return -ERANGE;
         if (start >= addr)
             start = 0;
     }
     offset = addr - sym->start;
     return __symbol__account_cycles(cycles_hist,
                     start ? start - sym->start : 0,
                     offset, cycles,
                     !!start);
 }
 
 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
                     struct addr_map_symbol *start,
                     unsigned cycles)
 {
     u64 saddr = 0;
     int err;
 
     if (!cycles)
         return 0;
 
     /*
      * Only set start when IPC can be computed. We can only
      * compute it when the basic block is completely in a single
      * function.
      * Special case the case when the jump is elsewhere, but
      * it starts on the function start.
      */
     if (start &&
         (start->ms.sym == ams->ms.sym ||
          (ams->ms.sym &&
            start->addr == ams->ms.sym->start + ams->ms.map->start)))
         saddr = start->al_addr;
     if (saddr == 0)
         pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
             ams->addr,
             start ? start->addr : 0,
             ams->ms.sym ? ams->ms.sym->start + ams->ms.map->start : 0,
             saddr);
     err = symbol__account_cycles(ams->al_addr, saddr, ams->ms.sym, cycles);
     if (err)
         pr_debug2("account_cycles failed %d\n", err);
     return err;
 }
 
 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end)
 {
     unsigned n_insn = 0;
     u64 offset;
 
     for (offset = start; offset <= end; offset++) {
         if (notes->offsets[offset])
             n_insn++;
     }
     return n_insn;
 }
 
 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch)
 {
     unsigned n_insn;
     unsigned int cover_insn = 0;
     u64 offset;
 
     n_insn = annotation__count_insn(notes, start, end);
     if (n_insn && ch->num && ch->cycles) {
         float ipc = n_insn / ((double)ch->cycles / (double)ch->num);
 
         /* Hide data when there are too many overlaps. */
         if (ch->reset >= 0x7fff)
             return;
 
         for (offset = start; offset <= end; offset++) {
             struct annotation_line *al = notes->offsets[offset];
 
             if (al && al->ipc == 0.0) {
                 al->ipc = ipc;
                 cover_insn++;
             }
         }
 
         if (cover_insn) {
             notes->hit_cycles += ch->cycles;
             notes->hit_insn += n_insn * ch->num;
             notes->cover_insn += cover_insn;
         }
     }
 }
 
 void annotation__compute_ipc(struct annotation *notes, size_t size)
 {
     s64 offset;
 
     if (!notes->src || !notes->src->cycles_hist)
         return;
 
     notes->total_insn = annotation__count_insn(notes, 0, size - 1);
     notes->hit_cycles = 0;
     notes->hit_insn = 0;
     notes->cover_insn = 0;
 
     pthread_mutex_lock(&notes->lock);
     for (offset = size - 1; offset >= 0; --offset) {
         struct cyc_hist *ch;
 
         ch = &notes->src->cycles_hist[offset];
         if (ch && ch->cycles) {
             struct annotation_line *al;
 
             if (ch->have_start)
                 annotation__count_and_fill(notes, ch->start, offset, ch);
             al = notes->offsets[offset];
             if (al && ch->num_aggr) {
                 al->cycles = ch->cycles_aggr / ch->num_aggr;
                 al->cycles_max = ch->cycles_max;
                 al->cycles_min = ch->cycles_min;
             }
             notes->have_cycles = true;
         }
     }
     pthread_mutex_unlock(&notes->lock);
 }
 
 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
                  struct evsel *evsel)
 {
     return symbol__inc_addr_samples(&ams->ms, evsel, ams->al_addr, sample);
 }
 
 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
                  struct evsel *evsel, u64 ip)
 {
     return symbol__inc_addr_samples(&he->ms, evsel, ip, sample);
 }
 
 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms)
 {
     dl->ins.ops = ins__find(arch, dl->ins.name);
 
     if (!dl->ins.ops)
         return;
 
     if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0)
         dl->ins.ops = NULL;
 }
 
 static int disasm_line__parse(char *line, const char **namep, char **rawp)
 {
     char tmp, *name = skip_spaces(line);
 
     if (name[0] == '\0')
         return -1;
 
     *rawp = name + 1;
 
     while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
         ++*rawp;
 
     tmp = (*rawp)[0];
     (*rawp)[0] = '\0';
     *namep = strdup(name);
 
     if (*namep == NULL)
         goto out;
 
     (*rawp)[0] = tmp;
     *rawp = strim(*rawp);
 
     return 0;
 
 out:
     return -1;
 }
 
 struct annotate_args {
     struct arch       *arch;
     struct map_symbol     ms;
     struct evsel          *evsel;
     struct annotation_options *options;
     s64           offset;
     char              *line;
     int           line_nr;
     char              *fileloc;
 };
 
 static void annotation_line__init(struct annotation_line *al,
                   struct annotate_args *args,
                   int nr)
 {
     al->offset = args->offset;
     al->line = strdup(args->line);
     al->line_nr = args->line_nr;
     al->fileloc = args->fileloc;
     al->data_nr = nr;
 }
 
 static void annotation_line__exit(struct annotation_line *al)
 {
     free_srcline(al->path);
     zfree(&al->line);
 }
 
 static size_t disasm_line_size(int nr)
 {
     struct annotation_line *al;
 
     return (sizeof(struct disasm_line) + (sizeof(al->data[0]) * nr));
 }
 
 /*
  * Allocating the disasm annotation line data with
  * following structure:
  *
  *    -------------------------------------------
  *    struct disasm_line | struct annotation_line
  *    -------------------------------------------
  *
  * We have 'struct annotation_line' member as last member
  * of 'struct disasm_line' to have an easy access.
  */
 static struct disasm_line *disasm_line__new(struct annotate_args *args)
 {
     struct disasm_line *dl = NULL;
     int nr = 1;
 
     if (evsel__is_group_event(args->evsel))
         nr = args->evsel->core.nr_members;
 
     dl = zalloc(disasm_line_size(nr));
     if (!dl)
         return NULL;
 
     annotation_line__init(&dl->al, args, nr);
     if (dl->al.line == NULL)
         goto out_delete;
 
     if (args->offset != -1) {
         if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
             goto out_free_line;
 
         disasm_line__init_ins(dl, args->arch, &args->ms);
     }
 
     return dl;
 
 out_free_line:
     zfree(&dl->al.line);
 out_delete:
     free(dl);
     return NULL;
 }
 
 void disasm_line__free(struct disasm_line *dl)
 {
     if (dl->ins.ops && dl->ins.ops->free)
         dl->ins.ops->free(&dl->ops);
     else
         ins__delete(&dl->ops);
     zfree(&dl->ins.name);
     annotation_line__exit(&dl->al);
     free(dl);
 }
 
 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name)
 {
     if (raw || !dl->ins.ops)
         return scnprintf(bf, size, "%-*s %s", max_ins_name, dl->ins.name, dl->ops.raw);
 
     return ins__scnprintf(&dl->ins, bf, size, &dl->ops, max_ins_name);
 }
 
 void annotation__init(struct annotation *notes)
 {
     pthread_mutex_init(&notes->lock, NULL);
 }
 
 void annotation__exit(struct annotation *notes)
 {
     annotated_source__delete(notes->src);
     pthread_mutex_destroy(&notes->lock);
 }
 
 static void annotation_line__add(struct annotation_line *al, struct list_head *head)
 {
     list_add_tail(&al->node, head);
 }
 
 struct annotation_line *
 annotation_line__next(struct annotation_line *pos, struct list_head *head)
 {
     list_for_each_entry_continue(pos, head, node)
         if (pos->offset >= 0)
             return pos;
 
     return NULL;
 }
 
 static const char *annotate__address_color(struct block_range *br)
 {
     double cov = block_range__coverage(br);
 
     if (cov >= 0) {
         /* mark red for >75% coverage */
         if (cov > 0.75)
             return PERF_COLOR_RED;
 
         /* mark dull for <1% coverage */
         if (cov < 0.01)
             return PERF_COLOR_NORMAL;
     }
 
     return PERF_COLOR_MAGENTA;
 }
 
 static const char *annotate__asm_color(struct block_range *br)
 {
     double cov = block_range__coverage(br);
 
     if (cov >= 0) {
         /* mark dull for <1% coverage */
         if (cov < 0.01)
             return PERF_COLOR_NORMAL;
     }
 
     return PERF_COLOR_BLUE;
 }
 
 static void annotate__branch_printf(struct block_range *br, u64 addr)
 {
     bool emit_comment = true;
 
     if (!br)
         return;
 
 #if 1
     if (br->is_target && br->start == addr) {
         struct block_range *branch = br;
         double p;
 
         /*
          * Find matching branch to our target.
          */
         while (!branch->is_branch)
             branch = block_range__next(branch);
 
         p = 100 *(double)br->entry / branch->coverage;
 
         if (p > 0.1) {
             if (emit_comment) {
                 emit_comment = false;
                 printf("\t#");
             }
 
             /*
              * The percentage of coverage joined at this target in relation
              * to the next branch.
              */
             printf(" +%.2f%%", p);
         }
     }
 #endif
     if (br->is_branch && br->end == addr) {
         double p = 100*(double)br->taken / br->coverage;
 
         if (p > 0.1) {
             if (emit_comment) {
                 emit_comment = false;
                 printf("\t#");
             }
 
             /*
              * The percentage of coverage leaving at this branch, and
              * its prediction ratio.
              */
             printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred  / br->taken);
         }
     }
 }
 
 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width)
 {
     s64 offset = dl->al.offset;
     const u64 addr = start + offset;
     struct block_range *br;
 
     br = block_range__find(addr);
     color_fprintf(stdout, annotate__address_color(br), "  %*" PRIx64 ":", addr_fmt_width, addr);
     color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line);
     annotate__branch_printf(br, addr);
     return 0;
 }
 
 static int
 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start,
                struct evsel *evsel, u64 len, int min_pcnt, int printed,
                int max_lines, struct annotation_line *queue, int addr_fmt_width,
                int percent_type)
 {
     struct disasm_line *dl = container_of(al, struct disasm_line, al);
     static const char *prev_line;
 
     if (al->offset != -1) {
         double max_percent = 0.0;
         int i, nr_percent = 1;
         const char *color;
         struct annotation *notes = symbol__annotation(sym);
 
         for (i = 0; i < al->data_nr; i++) {
             double percent;
 
             percent = annotation_data__percent(&al->data[i],
                                percent_type);
 
             if (percent > max_percent)
                 max_percent = percent;
         }
 
         if (al->data_nr > nr_percent)
             nr_percent = al->data_nr;
 
         if (max_percent < min_pcnt)
             return -1;
 
         if (max_lines && printed >= max_lines)
             return 1;
 
         if (queue != NULL) {
             list_for_each_entry_from(queue, &notes->src->source, node) {
                 if (queue == al)
                     break;
                 annotation_line__print(queue, sym, start, evsel, len,
                                0, 0, 1, NULL, addr_fmt_width,
                                percent_type);
             }
         }
 
         color = get_percent_color(max_percent);
 
         for (i = 0; i < nr_percent; i++) {
             struct annotation_data *data = &al->data[i];
             double percent;
 
             percent = annotation_data__percent(data, percent_type);
             color = get_percent_color(percent);
 
             if (symbol_conf.show_total_period)
                 color_fprintf(stdout, color, " %11" PRIu64,
                           data->he.period);
             else if (symbol_conf.show_nr_samples)
                 color_fprintf(stdout, color, " %7" PRIu64,
                           data->he.nr_samples);
             else
                 color_fprintf(stdout, color, " %7.2f", percent);
         }
 
         printf(" : ");
 
         disasm_line__print(dl, start, addr_fmt_width);
 
         /*
          * Also color the filename and line if needed, with
          * the same color than the percentage. Don't print it
          * twice for close colored addr with the same filename:line
          */
         if (al->path) {
             if (!prev_line || strcmp(prev_line, al->path)) {
                 color_fprintf(stdout, color, " // %s", al->path);
                 prev_line = al->path;
             }
         }
 
         printf("\n");
     } else if (max_lines && printed >= max_lines)
         return 1;
     else {
         int width = symbol_conf.show_total_period ? 12 : 8;
 
         if (queue)
             return -1;
 
         if (evsel__is_group_event(evsel))
             width *= evsel->core.nr_members;
 
         if (!*al->line)
             printf(" %*s:\n", width, " ");
         else
             printf(" %*s: %-*d %s\n", width, " ", addr_fmt_width, al->line_nr, al->line);
     }
 
     return 0;
 }
 
 /*
  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
  * which looks like following
  *
  *  0000000000415500 <_init>:
  *    415500:       sub    $0x8,%rsp
  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
  *    41550b:       test   %rax,%rax
  *    41550e:       je     415515 <_init+0x15>
  *    415510:       callq  416e70 <__gmon_start__@plt>
  *    415515:       add    $0x8,%rsp
  *    415519:       retq
  *
  * it will be parsed and saved into struct disasm_line as
  *  <offset>       <name>  <ops.raw>
  *
  * The offset will be a relative offset from the start of the symbol and -1
  * means that it's not a disassembly line so should be treated differently.
  * The ops.raw part will be parsed further according to type of the instruction.
  */
 static int symbol__parse_objdump_line(struct symbol *sym,
                       struct annotate_args *args,
                       char *parsed_line, int *line_nr, char **fileloc)
 {
     struct map *map = args->ms.map;
     struct annotation *notes = symbol__annotation(sym);
     struct disasm_line *dl;
     char *tmp;
     s64 line_ip, offset = -1;
     regmatch_t match[2];
 
     /* /filename:linenr ? Save line number and ignore. */
     if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
         *line_nr = atoi(parsed_line + match[1].rm_so);
         *fileloc = strdup(parsed_line);
         return 0;
     }
 
     /* Process hex address followed by ':'. */
     line_ip = strtoull(parsed_line, &tmp, 16);
     if (parsed_line != tmp && tmp[0] == ':' && tmp[1] != '\0') {
         u64 start = map__rip_2objdump(map, sym->start),
             end = map__rip_2objdump(map, sym->end);
 
         offset = line_ip - start;
         if ((u64)line_ip < start || (u64)line_ip >= end)
             offset = -1;
         else
             parsed_line = tmp + 1;
     }
 
     args->offset  = offset;
     args->line    = parsed_line;
     args->line_nr = *line_nr;
     args->fileloc = *fileloc;
     args->ms.sym  = sym;
 
     dl = disasm_line__new(args);
     (*line_nr)++;
 
     if (dl == NULL)
         return -1;
 
     if (!disasm_line__has_local_offset(dl)) {
         dl->ops.target.offset = dl->ops.target.addr -
                     map__rip_2objdump(map, sym->start);
         dl->ops.target.offset_avail = true;
     }
 
     /* kcore has no symbols, so add the call target symbol */
     if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) {
         struct addr_map_symbol target = {
             .addr = dl->ops.target.addr,
             .ms = { .map = map, },
         };
 
         if (!maps__find_ams(args->ms.maps, &target) &&
             target.ms.sym->start == target.al_addr)
             dl->ops.target.sym = target.ms.sym;
     }
 
     annotation_line__add(&dl->al, &notes->src->source);
 
     return 0;
 }
 
 static __attribute__((constructor)) void symbol__init_regexpr(void)
 {
     regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
 }
 
 static void delete_last_nop(struct symbol *sym)
 {
     struct annotation *notes = symbol__annotation(sym);
     struct list_head *list = &notes->src->source;
     struct disasm_line *dl;
 
     while (!list_empty(list)) {
         dl = list_entry(list->prev, struct disasm_line, al.node);
 
         if (dl->ins.ops) {
             if (dl->ins.ops != &nop_ops)
                 return;
         } else {
             if (!strstr(dl->al.line, " nop ") &&
                 !strstr(dl->al.line, " nopl ") &&
                 !strstr(dl->al.line, " nopw "))
                 return;
         }
 
         list_del_init(&dl->al.node);
         disasm_line__free(dl);
     }
 }
 
 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen)
 {
     struct dso *dso = ms->map->dso;
 
     BUG_ON(buflen == 0);
 
     if (errnum >= 0) {
         str_error_r(errnum, buf, buflen);
         return 0;
     }
 
     switch (errnum) {
     case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
         char bf[SBUILD_ID_SIZE + 15] = " with build id ";
         char *build_id_msg = NULL;
 
         if (dso->has_build_id) {
             build_id__sprintf(&dso->bid, bf + 15);
             build_id_msg = bf;
         }
         scnprintf(buf, buflen,
               "No vmlinux file%s\nwas found in the path.\n\n"
               "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
               "Please use:\n\n"
               "  perf buildid-cache -vu vmlinux\n\n"
               "or:\n\n"
               "  --vmlinux vmlinux\n", build_id_msg ?: "");
     }
         break;
     case SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF:
         scnprintf(buf, buflen, "Please link with binutils's libopcode to enable BPF annotation");
         break;
     case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP:
         scnprintf(buf, buflen, "Problems with arch specific instruction name regular expressions.");
         break;
     case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING:
         scnprintf(buf, buflen, "Problems while parsing the CPUID in the arch specific initialization.");
         break;
     case SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE:
         scnprintf(buf, buflen, "Invalid BPF file: %s.", dso->long_name);
         break;
     case SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF:
         scnprintf(buf, buflen, "The %s BPF file has no BTF section, compile with -g or use pahole -J.",
               dso->long_name);
         break;
     default:
         scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
         break;
     }
 
     return 0;
 }
 
 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
 {
     char linkname[PATH_MAX];
     char *build_id_filename;
     char *build_id_path = NULL;
     char *pos;
     int len;
 
     if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
         !dso__is_kcore(dso))
         return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
 
     build_id_filename = dso__build_id_filename(dso, NULL, 0, false);
     if (build_id_filename) {
         __symbol__join_symfs(filename, filename_size, build_id_filename);
         free(build_id_filename);
     } else {
         if (dso->has_build_id)
             return ENOMEM;
         goto fallback;
     }
 
     build_id_path = strdup(filename);
     if (!build_id_path)
         return ENOMEM;
 
     /*
      * old style build-id cache has name of XX/XXXXXXX.. while
      * new style has XX/XXXXXXX../{elf,kallsyms,vdso}.
      * extract the build-id part of dirname in the new style only.
      */
     pos = strrchr(build_id_path, '/');
     if (pos && strlen(pos) < SBUILD_ID_SIZE - 2)
         dirname(build_id_path);
 
     if (dso__is_kcore(dso))
         goto fallback;
 
     len = readlink(build_id_path, linkname, sizeof(linkname) - 1);
     if (len < 0)
         goto fallback;
 
     linkname[len] = '\0';
     if (strstr(linkname, DSO__NAME_KALLSYMS) ||
         access(filename, R_OK)) {
 fallback:
         /*
          * If we don't have build-ids or the build-id file isn't in the
          * cache, or is just a kallsyms file, well, lets hope that this
          * DSO is the same as when 'perf record' ran.
          */
         __symbol__join_symfs(filename, filename_size, dso->long_name);
 
         if (access(filename, R_OK) && errno == ENOENT && dso->nsinfo) {
             char *new_name = filename_with_chroot(dso->nsinfo->pid,
                                   filename);
             if (new_name) {
                 strlcpy(filename, new_name, filename_size);
                 free(new_name);
             }
         }
     }
 
     free(build_id_path);
     return 0;
 }
 
 #if defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
 #define PACKAGE "perf"
 #include <bfd.h>
 #include <dis-asm.h>
 #include <bpf/bpf.h>
 #include <bpf/btf.h>
 #include <bpf/libbpf.h>
 #include <linux/btf.h>
 #include <tools/dis-asm-compat.h>
 
 static int symbol__disassemble_bpf(struct symbol *sym,
                    struct annotate_args *args)
 {
     struct annotation *notes = symbol__annotation(sym);
     struct annotation_options *opts = args->options;
     struct bpf_prog_linfo *prog_linfo = NULL;
     struct bpf_prog_info_node *info_node;
     int len = sym->end - sym->start;
     disassembler_ftype disassemble;
     struct map *map = args->ms.map;
     struct perf_bpil *info_linear;
     struct disassemble_info info;
     struct dso *dso = map->dso;
     int pc = 0, count, sub_id;
     struct btf *btf = NULL;
     char tpath[PATH_MAX];
     size_t buf_size;
     int nr_skip = 0;
     char *buf;
     bfd *bfdf;
     int ret;
     FILE *s;
 
     if (dso->binary_type != DSO_BINARY_TYPE__BPF_PROG_INFO)
         return SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE;
 
     pr_debug("%s: handling sym %s addr %" PRIx64 " len %" PRIx64 "\n", __func__,
           sym->name, sym->start, sym->end - sym->start);
 
     memset(tpath, 0, sizeof(tpath));
     perf_exe(tpath, sizeof(tpath));
 
     bfdf = bfd_openr(tpath, NULL);
     assert(bfdf);
     assert(bfd_check_format(bfdf, bfd_object));
 
     s = open_memstream(&buf, &buf_size);
     if (!s) {
         ret = errno;
         goto out;
     }
     init_disassemble_info_compat(&info, s,
                      (fprintf_ftype) fprintf,
                      fprintf_styled);
     info.arch = bfd_get_arch(bfdf);
     info.mach = bfd_get_mach(bfdf);
 
     info_node = perf_env__find_bpf_prog_info(dso->bpf_prog.env,
                          dso->bpf_prog.id);
     if (!info_node) {
         ret = SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF;
         goto out;
     }
     info_linear = info_node->info_linear;
     sub_id = dso->bpf_prog.sub_id;
 
     info.buffer = (void *)(uintptr_t)(info_linear->info.jited_prog_insns);
     info.buffer_length = info_linear->info.jited_prog_len;
 
     if (info_linear->info.nr_line_info)
         prog_linfo = bpf_prog_linfo__new(&info_linear->info);
 
     if (info_linear->info.btf_id) {
         struct btf_node *node;
 
         node = perf_env__find_btf(dso->bpf_prog.env,
                       info_linear->info.btf_id);
         if (node)
             btf = btf__new((__u8 *)(node->data),
                        node->data_size);
     }
 
     disassemble_init_for_target(&info);
 
 #ifdef DISASM_FOUR_ARGS_SIGNATURE
     disassemble = disassembler(info.arch,
                    bfd_big_endian(bfdf),
                    info.mach,
                    bfdf);
 #else
     disassemble = disassembler(bfdf);
 #endif
     assert(disassemble);
 
     fflush(s);
     do {
         const struct bpf_line_info *linfo = NULL;
         struct disasm_line *dl;
         size_t prev_buf_size;
         const char *srcline;
         u64 addr;
 
         addr = pc + ((u64 *)(uintptr_t)(info_linear->info.jited_ksyms))[sub_id];
         count = disassemble(pc, &info);
 
         if (prog_linfo)
             linfo = bpf_prog_linfo__lfind_addr_func(prog_linfo,
                                 addr, sub_id,
                                 nr_skip);
 
         if (linfo && btf) {
             srcline = btf__name_by_offset(btf, linfo->line_off);
             nr_skip++;
         } else
             srcline = NULL;
 
         fprintf(s, "\n");
         prev_buf_size = buf_size;
         fflush(s);
 
         if (!opts->hide_src_code && srcline) {
             args->offset = -1;
             args->line = strdup(srcline);
             args->line_nr = 0;
             args->fileloc = NULL;
             args->ms.sym  = sym;
             dl = disasm_line__new(args);
             if (dl) {
                 annotation_line__add(&dl->al,
                              &notes->src->source);
             }
         }
 
         args->offset = pc;
         args->line = buf + prev_buf_size;
         args->line_nr = 0;
         args->fileloc = NULL;
         args->ms.sym  = sym;
         dl = disasm_line__new(args);
         if (dl)
             annotation_line__add(&dl->al, &notes->src->source);
 
         pc += count;
     } while (count > 0 && pc < len);
 
     ret = 0;
 out:
     free(prog_linfo);
     btf__free(btf);
     fclose(s);
     bfd_close(bfdf);
     return ret;
 }
 #else // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
 static int symbol__disassemble_bpf(struct symbol *sym __maybe_unused,
                    struct annotate_args *args __maybe_unused)
 {
     return SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF;
 }
 #endif // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
 
 static int
 symbol__disassemble_bpf_image(struct symbol *sym,
                   struct annotate_args *args)
 {
     struct annotation *notes = symbol__annotation(sym);
     struct disasm_line *dl;
 
     args->offset = -1;
     args->line = strdup("to be implemented");
     args->line_nr = 0;
     args->fileloc = NULL;
     dl = disasm_line__new(args);
     if (dl)
         annotation_line__add(&dl->al, &notes->src->source);
 
     free(args->line);
     return 0;
 }
 
 /*
  * Possibly create a new version of line with tabs expanded. Returns the
  * existing or new line, storage is updated if a new line is allocated. If
  * allocation fails then NULL is returned.
  */
 static char *expand_tabs(char *line, char **storage, size_t *storage_len)
 {
     size_t i, src, dst, len, new_storage_len, num_tabs;
     char *new_line;
     size_t line_len = strlen(line);
 
     for (num_tabs = 0, i = 0; i < line_len; i++)
         if (line[i] == '\t')
             num_tabs++;
 
     if (num_tabs == 0)
         return line;
 
     /*
      * Space for the line and '\0', less the leading and trailing
      * spaces. Each tab may introduce 7 additional spaces.
      */
     new_storage_len = line_len + 1 + (num_tabs * 7);
 
     new_line = malloc(new_storage_len);
     if (new_line == NULL) {
         pr_err("Failure allocating memory for tab expansion\n");
         return NULL;
     }
 
     /*
      * Copy regions starting at src and expand tabs. If there are two
      * adjacent tabs then 'src == i', the memcpy is of size 0 and the spaces
      * are inserted.
      */
     for (i = 0, src = 0, dst = 0; i < line_len && num_tabs; i++) {
         if (line[i] == '\t') {
             len = i - src;
             memcpy(&new_line[dst], &line[src], len);
             dst += len;
             new_line[dst++] = ' ';
             while (dst % 8 != 0)
                 new_line[dst++] = ' ';
             src = i + 1;
             num_tabs--;
         }
     }
 
     /* Expand the last region. */
     len = line_len - src;
     memcpy(&new_line[dst], &line[src], len);
     dst += len;
     new_line[dst] = '\0';
 
     free(*storage);
     *storage = new_line;
     *storage_len = new_storage_len;
     return new_line;
 
 }
 
 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args)
 {
     struct annotation_options *opts = args->options;
     struct map *map = args->ms.map;
     struct dso *dso = map->dso;
     char *command;
     FILE *file;
     char symfs_filename[PATH_MAX];
     struct kcore_extract kce;
     bool delete_extract = false;
     bool decomp = false;
     int lineno = 0;
     char *fileloc = NULL;
     int nline;
     char *line;
     size_t line_len;
     const char *objdump_argv[] = {
         "/bin/sh",
         "-c",
         NULL, /* Will be the objdump command to run. */
         "--",
         NULL, /* Will be the symfs path. */
         NULL,
     };
     struct child_process objdump_process;
     int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
 
     if (err)
         return err;
 
     pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
          symfs_filename, sym->name, map->unmap_ip(map, sym->start),
          map->unmap_ip(map, sym->end));
 
     pr_debug("annotating [%p] %30s : [%p] %30s\n",
          dso, dso->long_name, sym, sym->name);
 
     if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) {
         return symbol__disassemble_bpf(sym, args);
     } else if (dso->binary_type == DSO_BINARY_TYPE__BPF_IMAGE) {
         return symbol__disassemble_bpf_image(sym, args);
     } else if (dso__is_kcore(dso)) {
         kce.kcore_filename = symfs_filename;
         kce.addr = map__rip_2objdump(map, sym->start);
         kce.offs = sym->start;
         kce.len = sym->end - sym->start;
         if (!kcore_extract__create(&kce)) {
             delete_extract = true;
             strlcpy(symfs_filename, kce.extract_filename,
                 sizeof(symfs_filename));
         }
     } else if (dso__needs_decompress(dso)) {
         char tmp[KMOD_DECOMP_LEN];
 
         if (dso__decompress_kmodule_path(dso, symfs_filename,
                          tmp, sizeof(tmp)) < 0)
             return -1;
 
         decomp = true;
         strcpy(symfs_filename, tmp);
     }
 
     err = asprintf(&command,
          "%s %s%s --start-address=0x%016" PRIx64
          " --stop-address=0x%016" PRIx64
          " -l -d %s %s %s %c%s%c %s%s -C \"$1\"",
          opts->objdump_path ?: "objdump",
          opts->disassembler_style ? "-M " : "",
          opts->disassembler_style ?: "",
          map__rip_2objdump(map, sym->start),
          map__rip_2objdump(map, sym->end),
          opts->show_asm_raw ? "" : "--no-show-raw-insn",
          opts->annotate_src ? "-S" : "",
          opts->prefix ? "--prefix " : "",
          opts->prefix ? '"' : ' ',
          opts->prefix ?: "",
          opts->prefix ? '"' : ' ',
          opts->prefix_strip ? "--prefix-strip=" : "",
          opts->prefix_strip ?: "");
 
     if (err < 0) {
         pr_err("Failure allocating memory for the command to run\n");
         goto out_remove_tmp;
     }
 
     pr_debug("Executing: %s\n", command);
 
     objdump_argv[2] = command;
     objdump_argv[4] = symfs_filename;
 
     /* Create a pipe to read from for stdout */
     memset(&objdump_process, 0, sizeof(objdump_process));
     objdump_process.argv = objdump_argv;
     objdump_process.out = -1;
     objdump_process.err = -1;
     objdump_process.no_stderr = 1;
     if (start_command(&objdump_process)) {
         pr_err("Failure starting to run %s\n", command);
         err = -1;
         goto out_free_command;
     }
 
     file = fdopen(objdump_process.out, "r");
     if (!file) {
         pr_err("Failure creating FILE stream for %s\n", command);
         /*
          * If we were using debug info should retry with
          * original binary.
          */
         err = -1;
         goto out_close_stdout;
     }
 
     /* Storage for getline. */
     line = NULL;
     line_len = 0;
 
     nline = 0;
     while (!feof(file)) {
         const char *match;
         char *expanded_line;
 
         if (getline(&line, &line_len, file) < 0 || !line)
             break;
 
         /* Skip lines containing "filename:" */
         match = strstr(line, symfs_filename);
         if (match && match[strlen(symfs_filename)] == ':')
             continue;
 
         expanded_line = strim(line);
         expanded_line = expand_tabs(expanded_line, &line, &line_len);
         if (!expanded_line)
             break;
 
         /*
          * The source code line number (lineno) needs to be kept in
          * across calls to symbol__parse_objdump_line(), so that it
          * can associate it with the instructions till the next one.
          * See disasm_line__new() and struct disasm_line::line_nr.
          */
         if (symbol__parse_objdump_line(sym, args, expanded_line,
                            &lineno, &fileloc) < 0)
             break;
         nline++;
     }
     free(line);
 
     err = finish_command(&objdump_process);
     if (err)
         pr_err("Error running %s\n", command);
 
     if (nline == 0) {
         err = -1;
         pr_err("No output from %s\n", command);
     }
 
     /*
      * kallsyms does not have symbol sizes so there may a nop at the end.
      * Remove it.
      */
     if (dso__is_kcore(dso))
         delete_last_nop(sym);
 
     fclose(file);
 
 out_close_stdout:
     close(objdump_process.out);
 
 out_free_command:
     free(command);
 
 out_remove_tmp:
     if (decomp)
         unlink(symfs_filename);
 
     if (delete_extract)
         kcore_extract__delete(&kce);
 
     return err;
 }
 
 static void calc_percent(struct sym_hist *sym_hist,
              struct hists *hists,
              struct annotation_data *data,
              s64 offset, s64 end)
 {
     unsigned int hits = 0;
     u64 period = 0;
 
     while (offset < end) {
         hits   += sym_hist->addr[offset].nr_samples;
         period += sym_hist->addr[offset].period;
         ++offset;
     }
 
     if (sym_hist->nr_samples) {
         data->he.period     = period;
         data->he.nr_samples = hits;
         data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples;
     }
 
     if (hists->stats.nr_non_filtered_samples)
         data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples;
 
     if (sym_hist->period)
         data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period;
 
     if (hists->stats.total_period)
         data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period;
 }
 
 static void annotation__calc_percent(struct annotation *notes,
                      struct evsel *leader, s64 len)
 {
     struct annotation_line *al, *next;
     struct evsel *evsel;
 
     list_for_each_entry(al, &notes->src->source, node) {
         s64 end;
         int i = 0;
 
         if (al->offset == -1)
             continue;
 
         next = annotation_line__next(al, &notes->src->source);
         end  = next ? next->offset : len;
 
         for_each_group_evsel(evsel, leader) {
             struct hists *hists = evsel__hists(evsel);
             struct annotation_data *data;
             struct sym_hist *sym_hist;
 
             BUG_ON(i >= al->data_nr);
 
             sym_hist = annotation__histogram(notes, evsel->core.idx);
             data = &al->data[i++];
 
             calc_percent(sym_hist, hists, data, al->offset, end);
         }
     }
 }
 
 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel)
 {
     struct annotation *notes = symbol__annotation(sym);
 
     annotation__calc_percent(notes, evsel, symbol__size(sym));
 }
 
 int symbol__annotate(struct map_symbol *ms, struct evsel *evsel,
              struct annotation_options *options, struct arch **parch)
 {
     struct symbol *sym = ms->sym;
     struct annotation *notes = symbol__annotation(sym);
     struct annotate_args args = {
         .evsel      = evsel,
         .options    = options,
     };
     struct perf_env *env = evsel__env(evsel);
     const char *arch_name = perf_env__arch(env);
     struct arch *arch;
     int err;
 
     if (!arch_name)
         return errno;
 
     args.arch = arch = arch__find(arch_name);
     if (arch == NULL) {
         pr_err("%s: unsupported arch %s\n", __func__, arch_name);
         return ENOTSUP;
     }
 
     if (parch)
         *parch = arch;
 
     if (arch->init) {
         err = arch->init(arch, env ? env->cpuid : NULL);
         if (err) {
             pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
             return err;
         }
     }
 
     args.ms = *ms;
     notes->start = map__rip_2objdump(ms->map, sym->start);
 
     return symbol__disassemble(sym, &args);
 }
 
 static void insert_source_line(struct rb_root *root, struct annotation_line *al,
                    struct annotation_options *opts)
 {
     struct annotation_line *iter;
     struct rb_node **p = &root->rb_node;
     struct rb_node *parent = NULL;
     int i, ret;
 
     while (*p != NULL) {
         parent = *p;
         iter = rb_entry(parent, struct annotation_line, rb_node);
 
         ret = strcmp(iter->path, al->path);
         if (ret == 0) {
             for (i = 0; i < al->data_nr; i++) {
                 iter->data[i].percent_sum += annotation_data__percent(&al->data[i],
                                               opts->percent_type);
             }
             return;
         }
 
         if (ret < 0)
             p = &(*p)->rb_left;
         else
             p = &(*p)->rb_right;
     }
 
     for (i = 0; i < al->data_nr; i++) {
         al->data[i].percent_sum = annotation_data__percent(&al->data[i],
                                    opts->percent_type);
     }
 
     rb_link_node(&al->rb_node, parent, p);
     rb_insert_color(&al->rb_node, root);
 }
 
 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b)
 {
     int i;
 
     for (i = 0; i < a->data_nr; i++) {
         if (a->data[i].percent_sum == b->data[i].percent_sum)
             continue;
         return a->data[i].percent_sum > b->data[i].percent_sum;
     }
 
     return 0;
 }
 
 static void __resort_source_line(struct rb_root *root, struct annotation_line *al)
 {
     struct annotation_line *iter;
     struct rb_node **p = &root->rb_node;
     struct rb_node *parent = NULL;
 
     while (*p != NULL) {
         parent = *p;
         iter = rb_entry(parent, struct annotation_line, rb_node);
 
         if (cmp_source_line(al, iter))
             p = &(*p)->rb_left;
         else
             p = &(*p)->rb_right;
     }
 
     rb_link_node(&al->rb_node, parent, p);
     rb_insert_color(&al->rb_node, root);
 }
 
 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
 {
     struct annotation_line *al;
     struct rb_node *node;
 
     node = rb_first(src_root);
     while (node) {
         struct rb_node *next;
 
         al = rb_entry(node, struct annotation_line, rb_node);
         next = rb_next(node);
         rb_erase(node, src_root);
 
         __resort_source_line(dest_root, al);
         node = next;
     }
 }
 
 static void print_summary(struct rb_root *root, const char *filename)
 {
     struct annotation_line *al;
     struct rb_node *node;
 
     printf("\nSorted summary for file %s\n", filename);
     printf("----------------------------------------------\n\n");
 
     if (RB_EMPTY_ROOT(root)) {
         printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
         return;
     }
 
     node = rb_first(root);
     while (node) {
         double percent, percent_max = 0.0;
         const char *color;
         char *path;
         int i;
 
         al = rb_entry(node, struct annotation_line, rb_node);
         for (i = 0; i < al->data_nr; i++) {
             percent = al->data[i].percent_sum;
             color = get_percent_color(percent);
             color_fprintf(stdout, color, " %7.2f", percent);
 
             if (percent > percent_max)
                 percent_max = percent;
         }
 
         path = al->path;
         color = get_percent_color(percent_max);
         color_fprintf(stdout, color, " %s\n", path);
 
         node = rb_next(node);
     }
 }
 
 static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel)
 {
     struct annotation *notes = symbol__annotation(sym);
     struct sym_hist *h = annotation__histogram(notes, evsel->core.idx);
     u64 len = symbol__size(sym), offset;
 
     for (offset = 0; offset < len; ++offset)
         if (h->addr[offset].nr_samples != 0)
             printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
                    sym->start + offset, h->addr[offset].nr_samples);
     printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples);
 }
 
 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start)
 {
     char bf[32];
     struct annotation_line *line;
 
     list_for_each_entry_reverse(line, lines, node) {
         if (line->offset != -1)
             return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset);
     }
 
     return 0;
 }
 
 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel,
                 struct annotation_options *opts)
 {
     struct map *map = ms->map;
     struct symbol *sym = ms->sym;
     struct dso *dso = map->dso;
     char *filename;
     const char *d_filename;
     const char *evsel_name = evsel__name(evsel);
     struct annotation *notes = symbol__annotation(sym);
     struct sym_hist *h = annotation__histogram(notes, evsel->core.idx);
     struct annotation_line *pos, *queue = NULL;
     u64 start = map__rip_2objdump(map, sym->start);
     int printed = 2, queue_len = 0, addr_fmt_width;
     int more = 0;
     bool context = opts->context;
     u64 len;
     int width = symbol_conf.show_total_period ? 12 : 8;
     int graph_dotted_len;
     char buf[512];
 
     filename = strdup(dso->long_name);
     if (!filename)
         return -ENOMEM;
 
     if (opts->full_path)
         d_filename = filename;
     else
         d_filename = basename(filename);
 
     len = symbol__size(sym);
 
     if (evsel__is_group_event(evsel)) {
         width *= evsel->core.nr_members;
         evsel__group_desc(evsel, buf, sizeof(buf));
         evsel_name = buf;
     }
 
     graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples, "
                   "percent: %s)\n",
                   width, width, symbol_conf.show_total_period ? "Period" :
                   symbol_conf.show_nr_samples ? "Samples" : "Percent",
                   d_filename, evsel_name, h->nr_samples,
                   percent_type_str(opts->percent_type));
 
     printf("%-*.*s----\n",
            graph_dotted_len, graph_dotted_len, graph_dotted_line);
 
     if (verbose > 0)
         symbol__annotate_hits(sym, evsel);
 
     addr_fmt_width = annotated_source__addr_fmt_width(&notes->src->source, start);
 
     list_for_each_entry(pos, &notes->src->source, node) {
         int err;
 
         if (context && queue == NULL) {
             queue = pos;
             queue_len = 0;
         }
 
         err = annotation_line__print(pos, sym, start, evsel, len,
                          opts->min_pcnt, printed, opts->max_lines,
                          queue, addr_fmt_width, opts->percent_type);
 
         switch (err) {
         case 0:
             ++printed;
             if (context) {
                 printed += queue_len;
                 queue = NULL;
                 queue_len = 0;
             }
             break;
         case 1:
             /* filtered by max_lines */
             ++more;
             break;
         case -1:
         default:
             /*
              * Filtered by min_pcnt or non IP lines when
              * context != 0
              */
             if (!context)
                 break;
             if (queue_len == context)
                 queue = list_entry(queue->node.next, typeof(*queue), node);
             else
                 ++queue_len;
             break;
         }
     }
 
     free(filename);
 
     return more;
 }
 
 static void FILE__set_percent_color(void *fp __maybe_unused,
                     double percent __maybe_unused,
                     bool current __maybe_unused)
 {
 }
 
 static int FILE__set_jumps_percent_color(void *fp __maybe_unused,
                      int nr __maybe_unused, bool current __maybe_unused)
 {
     return 0;
 }
 
 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused)
 {
     return 0;
 }
 
 static void FILE__printf(void *fp, const char *fmt, ...)
 {
     va_list args;
 
     va_start(args, fmt);
     vfprintf(fp, fmt, args);
     va_end(args);
 }
 
 static void FILE__write_graph(void *fp, int graph)
 {
     const char *s;
     switch (graph) {
 
     case DARROW_CHAR: s = "↓"; break;
     case UARROW_CHAR: s = "↑"; break;
     case LARROW_CHAR: s = "←"; break;
     case RARROW_CHAR: s = "→"; break;
     default:        s = "?"; break;
     }
 
     fputs(s, fp);
 }
 
 static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp,
                      struct annotation_options *opts)
 {
     struct annotation *notes = symbol__annotation(sym);
     struct annotation_write_ops wops = {
         .first_line      = true,
         .obj             = fp,
         .set_color       = FILE__set_color,
         .set_percent_color   = FILE__set_percent_color,
         .set_jumps_percent_color = FILE__set_jumps_percent_color,
         .printf          = FILE__printf,
         .write_graph         = FILE__write_graph,
     };
     struct annotation_line *al;
 
     list_for_each_entry(al, &notes->src->source, node) {
         if (annotation_line__filter(al, notes))
             continue;
         annotation_line__write(al, notes, &wops, opts);
         fputc('\n', fp);
         wops.first_line = false;
     }
 
     return 0;
 }
 
 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel,
                 struct annotation_options *opts)
 {
     const char *ev_name = evsel__name(evsel);
     char buf[1024];
     char *filename;
     int err = -1;
     FILE *fp;
 
     if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0)
         return -1;
 
     fp = fopen(filename, "w");
     if (fp == NULL)
         goto out_free_filename;
 
     if (evsel__is_group_event(evsel)) {
         evsel__group_desc(evsel, buf, sizeof(buf));
         ev_name = buf;
     }
 
     fprintf(fp, "%s() %s\nEvent: %s\n\n",
         ms->sym->name, ms->map->dso->long_name, ev_name);
     symbol__annotate_fprintf2(ms->sym, fp, opts);
 
     fclose(fp);
     err = 0;
 out_free_filename:
     free(filename);
     return err;
 }
 
 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
 {
     struct annotation *notes = symbol__annotation(sym);
     struct sym_hist *h = annotation__histogram(notes, evidx);
 
     memset(h, 0, notes->src->sizeof_sym_hist);
 }
 
 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
 {
     struct annotation *notes = symbol__annotation(sym);
     struct sym_hist *h = annotation__histogram(notes, evidx);
     int len = symbol__size(sym), offset;
 
     h->nr_samples = 0;
     for (offset = 0; offset < len; ++offset) {
         h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8;
         h->nr_samples += h->addr[offset].nr_samples;
     }
 }
 
 void annotated_source__purge(struct annotated_source *as)
 {
     struct annotation_line *al, *n;
 
     list_for_each_entry_safe(al, n, &as->source, node) {
         list_del_init(&al->node);
         disasm_line__free(disasm_line(al));
     }
 }
 
 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
 {
     size_t printed;
 
     if (dl->al.offset == -1)
         return fprintf(fp, "%s\n", dl->al.line);
 
     printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name);
 
     if (dl->ops.raw[0] != '\0') {
         printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
                    dl->ops.raw);
     }
 
     return printed + fprintf(fp, "\n");
 }
 
 size_t disasm__fprintf(struct list_head *head, FILE *fp)
 {
     struct disasm_line *pos;
     size_t printed = 0;
 
     list_for_each_entry(pos, head, al.node)
         printed += disasm_line__fprintf(pos, fp);
 
     return printed;
 }
 
 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym)
 {
     if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) ||
         !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 ||
         dl->ops.target.offset >= (s64)symbol__size(sym))
         return false;
 
     return true;
 }
 
 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym)
 {
     u64 offset, size = symbol__size(sym);
 
     /* PLT symbols contain external offsets */
     if (strstr(sym->name, "@plt"))
         return;
 
     for (offset = 0; offset < size; ++offset) {
         struct annotation_line *al = notes->offsets[offset];
         struct disasm_line *dl;
 
         dl = disasm_line(al);
 
         if (!disasm_line__is_valid_local_jump(dl, sym))
             continue;
 
         al = notes->offsets[dl->ops.target.offset];
 
         /*
          * FIXME: Oops, no jump target? Buggy disassembler? Or do we
          * have to adjust to the previous offset?
          */
         if (al == NULL)
             continue;
 
         if (++al->jump_sources > notes->max_jump_sources)
             notes->max_jump_sources = al->jump_sources;
     }
 }
 
 void annotation__set_offsets(struct annotation *notes, s64 size)
 {
     struct annotation_line *al;
 
     notes->max_line_len = 0;
     notes->nr_entries = 0;
     notes->nr_asm_entries = 0;
 
     list_for_each_entry(al, &notes->src->source, node) {
         size_t line_len = strlen(al->line);
 
         if (notes->max_line_len < line_len)
             notes->max_line_len = line_len;
         al->idx = notes->nr_entries++;
         if (al->offset != -1) {
             al->idx_asm = notes->nr_asm_entries++;
             /*
              * FIXME: short term bandaid to cope with assembly
              * routines that comes with labels in the same column
              * as the address in objdump, sigh.
              *
              * E.g. copy_user_generic_unrolled
              */
             if (al->offset < size)
                 notes->offsets[al->offset] = al;
         } else
             al->idx_asm = -1;
     }
 }
 
 static inline int width_jumps(int n)
 {
     if (n >= 100)
         return 5;
     if (n / 10)
         return 2;
     return 1;
 }
 
 static int annotation__max_ins_name(struct annotation *notes)
 {
     int max_name = 0, len;
     struct annotation_line *al;
 
         list_for_each_entry(al, &notes->src->source, node) {
         if (al->offset == -1)
             continue;
 
         len = strlen(disasm_line(al)->ins.name);
         if (max_name < len)
             max_name = len;
     }
 
     return max_name;
 }
 
 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym)
 {
     notes->widths.addr = notes->widths.target =
         notes->widths.min_addr = hex_width(symbol__size(sym));
     notes->widths.max_addr = hex_width(sym->end);
     notes->widths.jumps = width_jumps(notes->max_jump_sources);
     notes->widths.max_ins_name = annotation__max_ins_name(notes);
 }
 
 void annotation__update_column_widths(struct annotation *notes)
 {
     if (notes->options->use_offset)
         notes->widths.target = notes->widths.min_addr;
     else
         notes->widths.target = notes->widths.max_addr;
 
     notes->widths.addr = notes->widths.target;
 
     if (notes->options->show_nr_jumps)
         notes->widths.addr += notes->widths.jumps + 1;
 }
 
 static void annotation__calc_lines(struct annotation *notes, struct map *map,
                    struct rb_root *root,
                    struct annotation_options *opts)
 {
     struct annotation_line *al;
     struct rb_root tmp_root = RB_ROOT;
 
     list_for_each_entry(al, &notes->src->source, node) {
         double percent_max = 0.0;
         int i;
 
         for (i = 0; i < al->data_nr; i++) {
             double percent;
 
             percent = annotation_data__percent(&al->data[i],
                                opts->percent_type);
 
             if (percent > percent_max)
                 percent_max = percent;
         }
 
         if (percent_max <= 0.5)
             continue;
 
         al->path = get_srcline(map->dso, notes->start + al->offset, NULL,
                        false, true, notes->start + al->offset);
         insert_source_line(&tmp_root, al, opts);
     }
 
     resort_source_line(root, &tmp_root);
 }
 
 static void symbol__calc_lines(struct map_symbol *ms, struct rb_root *root,
                    struct annotation_options *opts)
 {
     struct annotation *notes = symbol__annotation(ms->sym);
 
     annotation__calc_lines(notes, ms->map, root, opts);
 }
 
 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel,
               struct annotation_options *opts)
 {
     struct dso *dso = ms->map->dso;
     struct symbol *sym = ms->sym;
     struct rb_root source_line = RB_ROOT;
     struct hists *hists = evsel__hists(evsel);
     char buf[1024];
     int err;
 
     err = symbol__annotate2(ms, evsel, opts, NULL);
     if (err) {
         char msg[BUFSIZ];
 
         dso->annotate_warned = true;
         symbol__strerror_disassemble(ms, err, msg, sizeof(msg));
         ui__error("Couldn't annotate %s:\n%s", sym->name, msg);
         return -1;
     }
 
     if (opts->print_lines) {
         srcline_full_filename = opts->full_path;
         symbol__calc_lines(ms, &source_line, opts);
         print_summary(&source_line, dso->long_name);
     }
 
     hists__scnprintf_title(hists, buf, sizeof(buf));
     fprintf(stdout, "%s, [percent: %s]\n%s() %s\n",
         buf, percent_type_str(opts->percent_type), sym->name, dso->long_name);
     symbol__annotate_fprintf2(sym, stdout, opts);
 
     annotated_source__purge(symbol__annotation(sym)->src);
 
     return 0;
 }
 
 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel,
              struct annotation_options *opts)
 {
     struct dso *dso = ms->map->dso;
     struct symbol *sym = ms->sym;
     struct rb_root source_line = RB_ROOT;
     int err;
 
     err = symbol__annotate(ms, evsel, opts, NULL);
     if (err) {
         char msg[BUFSIZ];
 
         dso->annotate_warned = true;
         symbol__strerror_disassemble(ms, err, msg, sizeof(msg));
         ui__error("Couldn't annotate %s:\n%s", sym->name, msg);
         return -1;
     }
 
     symbol__calc_percent(sym, evsel);
 
     if (opts->print_lines) {
         srcline_full_filename = opts->full_path;
         symbol__calc_lines(ms, &source_line, opts);
         print_summary(&source_line, dso->long_name);
     }
 
     symbol__annotate_printf(ms, evsel, opts);
 
     annotated_source__purge(symbol__annotation(sym)->src);
 
     return 0;
 }
 
 bool ui__has_annotation(void)
 {
     return use_browser == 1 && perf_hpp_list.sym;
 }
 
 
 static double annotation_line__max_percent(struct annotation_line *al,
                        struct annotation *notes,
                        unsigned int percent_type)
 {
     double percent_max = 0.0;
     int i;
 
     for (i = 0; i < notes->nr_events; i++) {
         double percent;
 
         percent = annotation_data__percent(&al->data[i],
                            percent_type);
 
         if (percent > percent_max)
             percent_max = percent;
     }
 
     return percent_max;
 }
 
 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes,
                    void *obj, char *bf, size_t size,
                    void (*obj__printf)(void *obj, const char *fmt, ...),
                    void (*obj__write_graph)(void *obj, int graph))
 {
     if (dl->ins.ops && dl->ins.ops->scnprintf) {
         if (ins__is_jump(&dl->ins)) {
             bool fwd;
 
             if (dl->ops.target.outside)
                 goto call_like;
             fwd = dl->ops.target.offset > dl->al.offset;
             obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR);
             obj__printf(obj, " ");
         } else if (ins__is_call(&dl->ins)) {
 call_like:
             obj__write_graph(obj, RARROW_CHAR);
             obj__printf(obj, " ");
         } else if (ins__is_ret(&dl->ins)) {
             obj__write_graph(obj, LARROW_CHAR);
             obj__printf(obj, " ");
         } else {
             obj__printf(obj, "  ");
         }
     } else {
         obj__printf(obj, "  ");
     }
 
     disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset, notes->widths.max_ins_name);
 }
 
 static void ipc_coverage_string(char *bf, int size, struct annotation *notes)
 {
     double ipc = 0.0, coverage = 0.0;
 
     if (notes->hit_cycles)
         ipc = notes->hit_insn / ((double)notes->hit_cycles);
 
     if (notes->total_insn) {
         coverage = notes->cover_insn * 100.0 /
             ((double)notes->total_insn);
     }
 
     scnprintf(bf, size, "(Average IPC: %.2f, IPC Coverage: %.1f%%)",
           ipc, coverage);
 }
 
 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes,
                      bool first_line, bool current_entry, bool change_color, int width,
                      void *obj, unsigned int percent_type,
                      int  (*obj__set_color)(void *obj, int color),
                      void (*obj__set_percent_color)(void *obj, double percent, bool current),
                      int  (*obj__set_jumps_percent_color)(void *obj, int nr, bool current),
                      void (*obj__printf)(void *obj, const char *fmt, ...),
                      void (*obj__write_graph)(void *obj, int graph))
 
 {
     double percent_max = annotation_line__max_percent(al, notes, percent_type);
     int pcnt_width = annotation__pcnt_width(notes),
         cycles_width = annotation__cycles_width(notes);
     bool show_title = false;
     char bf[256];
     int printed;
 
     if (first_line && (al->offset == -1 || percent_max == 0.0)) {
         if (notes->have_cycles) {
             if (al->ipc == 0.0 && al->cycles == 0)
                 show_title = true;
         } else
             show_title = true;
     }
 
     if (al->offset != -1 && percent_max != 0.0) {
         int i;
 
         for (i = 0; i < notes->nr_events; i++) {
             double percent;
 
             percent = annotation_data__percent(&al->data[i], percent_type);
 
             obj__set_percent_color(obj, percent, current_entry);
             if (symbol_conf.show_total_period) {
                 obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period);
             } else if (symbol_conf.show_nr_samples) {
                 obj__printf(obj, "%6" PRIu64 " ",
                            al->data[i].he.nr_samples);
             } else {
                 obj__printf(obj, "%6.2f ", percent);
             }
         }
     } else {
         obj__set_percent_color(obj, 0, current_entry);
 
         if (!show_title)
             obj__printf(obj, "%-*s", pcnt_width, " ");
         else {
             obj__printf(obj, "%-*s", pcnt_width,
                        symbol_conf.show_total_period ? "Period" :
                        symbol_conf.show_nr_samples ? "Samples" : "Percent");
         }
     }
 
     if (notes->have_cycles) {
         if (al->ipc)
             obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc);
         else if (!show_title)
             obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " ");
         else
             obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC");
 
         if (!notes->options->show_minmax_cycle) {
             if (al->cycles)
                 obj__printf(obj, "%*" PRIu64 " ",
                        ANNOTATION__CYCLES_WIDTH - 1, al->cycles);
             else if (!show_title)
                 obj__printf(obj, "%*s",
                         ANNOTATION__CYCLES_WIDTH, " ");
             else
                 obj__printf(obj, "%*s ",
                         ANNOTATION__CYCLES_WIDTH - 1,
                         "Cycle");
         } else {
             if (al->cycles) {
                 char str[32];
 
                 scnprintf(str, sizeof(str),
                     "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")",
                     al->cycles, al->cycles_min,
                     al->cycles_max);
 
                 obj__printf(obj, "%*s ",
                         ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
                         str);
             } else if (!show_title)
                 obj__printf(obj, "%*s",
                         ANNOTATION__MINMAX_CYCLES_WIDTH,
                         " ");
             else
                 obj__printf(obj, "%*s ",
                         ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
                         "Cycle(min/max)");
         }
 
         if (show_title && !*al->line) {
             ipc_coverage_string(bf, sizeof(bf), notes);
             obj__printf(obj, "%*s", ANNOTATION__AVG_IPC_WIDTH, bf);
         }
     }
 
     obj__printf(obj, " ");
 
     if (!*al->line)
         obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " ");
     else if (al->offset == -1) {
         if (al->line_nr && notes->options->show_linenr)
             printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr);
         else
             printed = scnprintf(bf, sizeof(bf), "%-*s  ", notes->widths.addr, " ");
         obj__printf(obj, bf);
         obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line);
     } else {
         u64 addr = al->offset;
         int color = -1;
 
         if (!notes->options->use_offset)
             addr += notes->start;
 
         if (!notes->options->use_offset) {
             printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
         } else {
             if (al->jump_sources &&
                 notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) {
                 if (notes->options->show_nr_jumps) {
                     int prev;
                     printed = scnprintf(bf, sizeof(bf), "%*d ",
                                 notes->widths.jumps,
                                 al->jump_sources);
                     prev = obj__set_jumps_percent_color(obj, al->jump_sources,
                                         current_entry);
                     obj__printf(obj, bf);
                     obj__set_color(obj, prev);
                 }
 print_addr:
                 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
                             notes->widths.target, addr);
             } else if (ins__is_call(&disasm_line(al)->ins) &&
                    notes->options->offset_level >= ANNOTATION__OFFSET_CALL) {
                 goto print_addr;
             } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) {
                 goto print_addr;
             } else {
                 printed = scnprintf(bf, sizeof(bf), "%-*s  ",
                             notes->widths.addr, " ");
             }
         }
 
         if (change_color)
             color = obj__set_color(obj, HE_COLORSET_ADDR);
         obj__printf(obj, bf);
         if (change_color)
             obj__set_color(obj, color);
 
         disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph);
 
         obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf);
     }
 
 }
 
 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
                 struct annotation_write_ops *wops,
                 struct annotation_options *opts)
 {
     __annotation_line__write(al, notes, wops->first_line, wops->current_entry,
                  wops->change_color, wops->width, wops->obj,
                  opts->percent_type,
                  wops->set_color, wops->set_percent_color,
                  wops->set_jumps_percent_color, wops->printf,
                  wops->write_graph);
 }
 
 int symbol__annotate2(struct map_symbol *ms, struct evsel *evsel,
               struct annotation_options *options, struct arch **parch)
 {
     struct symbol *sym = ms->sym;
     struct annotation *notes = symbol__annotation(sym);
     size_t size = symbol__size(sym);
     int nr_pcnt = 1, err;
 
     notes->offsets = zalloc(size * sizeof(struct annotation_line *));
     if (notes->offsets == NULL)
         return ENOMEM;
 
     if (evsel__is_group_event(evsel))
         nr_pcnt = evsel->core.nr_members;
 
     err = symbol__annotate(ms, evsel, options, parch);
     if (err)
         goto out_free_offsets;
 
     notes->options = options;
 
     symbol__calc_percent(sym, evsel);
 
     annotation__set_offsets(notes, size);
     annotation__mark_jump_targets(notes, sym);
     annotation__compute_ipc(notes, size);
     annotation__init_column_widths(notes, sym);
     notes->nr_events = nr_pcnt;
 
     annotation__update_column_widths(notes);
     sym->annotate2 = 1;
 
     return 0;
 
 out_free_offsets:
     zfree(&notes->offsets);
     return err;
 }
 
 static int annotation__config(const char *var, const char *value, void *data)
 {
     struct annotation_options *opt = data;
 
     if (!strstarts(var, "annotate."))
         return 0;
 
     if (!strcmp(var, "annotate.offset_level")) {
         perf_config_u8(&opt->offset_level, "offset_level", value);
 
         if (opt->offset_level > ANNOTATION__MAX_OFFSET_LEVEL)
             opt->offset_level = ANNOTATION__MAX_OFFSET_LEVEL;
         else if (opt->offset_level < ANNOTATION__MIN_OFFSET_LEVEL)
             opt->offset_level = ANNOTATION__MIN_OFFSET_LEVEL;
     } else if (!strcmp(var, "annotate.hide_src_code")) {
         opt->hide_src_code = perf_config_bool("hide_src_code", value);
     } else if (!strcmp(var, "annotate.jump_arrows")) {
         opt->jump_arrows = perf_config_bool("jump_arrows", value);
     } else if (!strcmp(var, "annotate.show_linenr")) {
         opt->show_linenr = perf_config_bool("show_linenr", value);
     } else if (!strcmp(var, "annotate.show_nr_jumps")) {
         opt->show_nr_jumps = perf_config_bool("show_nr_jumps", value);
     } else if (!strcmp(var, "annotate.show_nr_samples")) {
         symbol_conf.show_nr_samples = perf_config_bool("show_nr_samples",
                                 value);
     } else if (!strcmp(var, "annotate.show_total_period")) {
         symbol_conf.show_total_period = perf_config_bool("show_total_period",
                                 value);
     } else if (!strcmp(var, "annotate.use_offset")) {
         opt->use_offset = perf_config_bool("use_offset", value);
     } else if (!strcmp(var, "annotate.disassembler_style")) {
         opt->disassembler_style = value;
     } else if (!strcmp(var, "annotate.demangle")) {
         symbol_conf.demangle = perf_config_bool("demangle", value);
     } else if (!strcmp(var, "annotate.demangle_kernel")) {
         symbol_conf.demangle_kernel = perf_config_bool("demangle_kernel", value);
     } else {
         pr_debug("%s variable unknown, ignoring...", var);
     }
 
     return 0;
 }
 
 void annotation_config__init(struct annotation_options *opt)
 {
     perf_config(annotation__config, opt);
 }
 
 static unsigned int parse_percent_type(char *str1, char *str2)
 {
     unsigned int type = (unsigned int) -1;
 
     if (!strcmp("period", str1)) {
         if (!strcmp("local", str2))
             type = PERCENT_PERIOD_LOCAL;
         else if (!strcmp("global", str2))
             type = PERCENT_PERIOD_GLOBAL;
     }
 
     if (!strcmp("hits", str1)) {
         if (!strcmp("local", str2))
             type = PERCENT_HITS_LOCAL;
         else if (!strcmp("global", str2))
             type = PERCENT_HITS_GLOBAL;
     }
 
     return type;
 }
 
 int annotate_parse_percent_type(const struct option *opt, const char *_str,
                 int unset __maybe_unused)
 {
     struct annotation_options *opts = opt->value;
     unsigned int type;
     char *str1, *str2;
     int err = -1;
 
     str1 = strdup(_str);
     if (!str1)
         return -ENOMEM;
 
     str2 = strchr(str1, '-');
     if (!str2)
         goto out;
 
     *str2++ = 0;
 
     type = parse_percent_type(str1, str2);
     if (type == (unsigned int) -1)
         type = parse_percent_type(str2, str1);
     if (type != (unsigned int) -1) {
         opts->percent_type = type;
         err = 0;
     }
 
 out:
     free(str1);
     return err;
 }
 
 int annotate_check_args(struct annotation_options *args)
 {
     if (args->prefix_strip && !args->prefix) {
         pr_err("--prefix-strip requires --prefix\n");
         return -1;
     }
     return 0;
 }