diff options
Diffstat (limited to 'tools/perf/util/symbol-elf.c')
| -rw-r--r-- | tools/perf/util/symbol-elf.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index d75349979e65..1e23a5bfb044 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -6,6 +6,7 @@ #include <inttypes.h> #include "symbol.h" +#include "machine.h" #include "vdso.h" #include <symbol/kallsyms.h> #include "debug.h" @@ -680,6 +681,11 @@ static u64 ref_reloc(struct kmap *kmap) return 0; } +static bool want_demangle(bool is_kernel_sym) +{ + return is_kernel_sym ? symbol_conf.demangle_kernel : symbol_conf.demangle; +} + int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss, struct symsrc *runtime_ss, symbol_filter_t filter, int kmodule) @@ -712,6 +718,14 @@ int dso__load_sym(struct dso *dso, struct map *map, symbols__delete(&dso->symbols[map->type]); if (!syms_ss->symtab) { + /* + * If the vmlinux is stripped, fail so we will fall back + * to using kallsyms. The vmlinux runtime symbols aren't + * of much use. + */ + if (dso->kernel) + goto out_elf_end; + syms_ss->symtab = syms_ss->dynsym; syms_ss->symshdr = syms_ss->dynshdr; } @@ -736,7 +750,7 @@ int dso__load_sym(struct dso *dso, struct map *map, if (symstrs == NULL) goto out_elf_end; - sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); + sec_strndx = elf_getscn(runtime_ss->elf, runtime_ss->ehdr.e_shstrndx); if (sec_strndx == NULL) goto out_elf_end; @@ -916,7 +930,11 @@ int dso__load_sym(struct dso *dso, struct map *map, } curr_dso->symtab_type = dso->symtab_type; map_groups__insert(kmap->kmaps, curr_map); - dsos__add(&dso->node, curr_dso); + /* + * The new DSO should go to the kernel DSOS + */ + dsos__add(&map->groups->machine->kernel_dsos, + curr_dso); dso__set_loaded(curr_dso, map->type); } else curr_dso = curr_map->dso; @@ -938,9 +956,12 @@ new_symbol: * DWARF DW_compile_unit has this, but we don't always have access * to it... */ - if (symbol_conf.demangle) { - demangled = bfd_demangle(NULL, elf_name, - DMGL_PARAMS | DMGL_ANSI); + if (want_demangle(dso->kernel || kmodule)) { + int demangle_flags = DMGL_NO_OPTS; + if (verbose) + demangle_flags = DMGL_PARAMS | DMGL_ANSI; + + demangled = bfd_demangle(NULL, elf_name, demangle_flags); if (demangled != NULL) elf_name = demangled; } |