diff options
Diffstat (limited to 'tools/perf/util/symbol.c')
| -rw-r--r-- | tools/perf/util/symbol.c | 61 |
1 files changed, 53 insertions, 8 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 6f0dd90c36ce..b39f499e575a 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -131,7 +131,8 @@ static void map_groups__fixup_end(struct map_groups *self) __map_groups__fixup_end(self, i); } -static struct symbol *symbol__new(u64 start, u64 len, const char *name) +static struct symbol *symbol__new(u64 start, u64 len, u8 binding, + const char *name) { size_t namelen = strlen(name) + 1; struct symbol *self = calloc(1, (symbol_conf.priv_size + @@ -144,6 +145,7 @@ static struct symbol *symbol__new(u64 start, u64 len, const char *name) self->start = start; self->end = len ? start + len - 1 : start; + self->binding = binding; self->namelen = namelen - 1; pr_debug4("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); @@ -160,8 +162,11 @@ void symbol__delete(struct symbol *self) static size_t symbol__fprintf(struct symbol *self, FILE *fp) { - return fprintf(fp, " %llx-%llx %s\n", - self->start, self->end, self->name); + return fprintf(fp, " %llx-%llx %c %s\n", + self->start, self->end, + self->binding == STB_GLOBAL ? 'g' : + self->binding == STB_LOCAL ? 'l' : 'w', + self->name); } void dso__set_long_name(struct dso *self, char *name) @@ -383,6 +388,20 @@ size_t dso__fprintf_buildid(struct dso *self, FILE *fp) return fprintf(fp, "%s", sbuild_id); } +size_t dso__fprintf_symbols_by_name(struct dso *self, enum map_type type, FILE *fp) +{ + size_t ret = 0; + struct rb_node *nd; + struct symbol_name_rb_node *pos; + + for (nd = rb_first(&self->symbol_names[type]); nd; nd = rb_next(nd)) { + pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); + fprintf(fp, "%s\n", pos->sym.name); + } + + return ret; +} + size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp) { struct rb_node *nd; @@ -453,6 +472,14 @@ struct process_kallsyms_args { struct dso *dso; }; +static u8 kallsyms2elf_type(char type) +{ + if (type == 'W') + return STB_WEAK; + + return isupper(type) ? STB_GLOBAL : STB_LOCAL; +} + static int map__process_kallsym_symbol(void *arg, const char *name, char type, u64 start) { @@ -466,7 +493,7 @@ static int map__process_kallsym_symbol(void *arg, const char *name, /* * Will fix up the end later, when we have all symbols sorted. */ - sym = symbol__new(start, 0, name); + sym = symbol__new(start, 0, kallsyms2elf_type(type), name); if (sym == NULL) return -ENOMEM; @@ -661,7 +688,7 @@ static int dso__load_perf_map(struct dso *self, struct map *map, if (len + 2 >= line_len) continue; - sym = symbol__new(start, size, line + len); + sym = symbol__new(start, size, STB_GLOBAL, line + len); if (sym == NULL) goto out_delete_line; @@ -873,7 +900,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, "%s@plt", elf_sym__name(&sym, symstrs)); f = symbol__new(plt_offset, shdr_plt.sh_entsize, - sympltname); + STB_GLOBAL, sympltname); if (!f) goto out_elf_end; @@ -895,7 +922,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, "%s@plt", elf_sym__name(&sym, symstrs)); f = symbol__new(plt_offset, shdr_plt.sh_entsize, - sympltname); + STB_GLOBAL, sympltname); if (!f) goto out_elf_end; @@ -1066,6 +1093,16 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name, if (!is_label && !elf_sym__is_a(&sym, map->type)) continue; + /* Reject ARM ELF "mapping symbols": these aren't unique and + * don't identify functions, so will confuse the profile + * output: */ + if (ehdr.e_machine == EM_ARM) { + if (!strcmp(elf_name, "$a") || + !strcmp(elf_name, "$d") || + !strcmp(elf_name, "$t")) + continue; + } + if (opdsec && sym.st_shndx == opdidx) { u32 offset = sym.st_value - opdshdr.sh_addr; u64 *opd = opddata->d_buf + offset; @@ -1146,7 +1183,8 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name, if (demangled != NULL) elf_name = demangled; new_symbol: - f = symbol__new(sym.st_value, sym.st_size, elf_name); + f = symbol__new(sym.st_value, sym.st_size, + GELF_ST_BIND(sym.st_info), elf_name); free(demangled); if (!f) goto out_elf_end; @@ -2244,6 +2282,9 @@ static int setup_list(struct strlist **list, const char *list_str, int symbol__init(void) { + if (symbol_conf.initialized) + return 0; + elf_version(EV_CURRENT); if (symbol_conf.sort_by_name) symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - @@ -2269,6 +2310,7 @@ int symbol__init(void) symbol_conf.sym_list_str, "symbol") < 0) goto out_free_comm_list; + symbol_conf.initialized = true; return 0; out_free_dso_list: @@ -2280,11 +2322,14 @@ out_free_comm_list: void symbol__exit(void) { + if (!symbol_conf.initialized) + return; strlist__delete(symbol_conf.sym_list); strlist__delete(symbol_conf.dso_list); strlist__delete(symbol_conf.comm_list); vmlinux_path__exit(); symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL; + symbol_conf.initialized = false; } int machines__create_kernel_maps(struct rb_root *self, pid_t pid) |