diff options
-rw-r--r-- | tools/perf/util/dso.c | 1 | ||||
-rw-r--r-- | tools/perf/util/dso.h | 1 | ||||
-rw-r--r-- | tools/perf/util/map.c | 14 | ||||
-rw-r--r-- | tools/perf/util/symbol-elf.c | 25 | ||||
-rw-r--r-- | tools/perf/util/symbol.c | 11 |
5 files changed, 43 insertions, 9 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 121583d..1955804 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -419,6 +419,7 @@ struct dso *dso__new(const char *name) dso->symtab_type = DSO_BINARY_TYPE__NOT_FOUND; dso->data_type = DSO_BINARY_TYPE__NOT_FOUND; dso->loaded = 0; + dso->rel = 0; dso->sorted_by_name = 0; dso->has_build_id = 0; dso->kernel = DSO_TYPE_USER; diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index 02aadaf..735a837 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -85,6 +85,7 @@ struct dso { u8 lname_alloc:1; u8 sorted_by_name; u8 loaded; + u8 rel; u8 build_id[BUILD_ID_SIZE]; const char *short_name; char *long_name; diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 5f662a3..4d599fe 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -248,14 +248,18 @@ size_t map__fprintf_dsoname(struct map *map, FILE *fp) /* * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN. - * map->dso->adjust_symbols==1 for ET_EXEC-like cases. + * map->dso->adjust_symbols==1 for ET_EXEC-like cases except ET_REL which is + * relative to section start. */ u64 map__rip_2objdump(struct map *map, u64 rip) { - u64 addr = map->dso->adjust_symbols ? - map->unmap_ip(map, rip) : /* RIP -> IP */ - rip; - return addr; + if (!map->dso->adjust_symbols) + return rip; + + if (map->dso->rel) + return rip - map->pgoff; + + return map->unmap_ip(map, rip); } void map_groups__init(struct map_groups *mg) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index ed6f443..3eaa7b4 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -599,11 +599,13 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name, if (dso->kernel == DSO_TYPE_USER) { GElf_Shdr shdr; ss->adjust_symbols = (ehdr.e_type == ET_EXEC || + ehdr.e_type == ET_REL || elf_section_by_name(elf, &ehdr, &shdr, ".gnu.prelink_undo", NULL) != NULL); } else { - ss->adjust_symbols = ehdr.e_type == ET_EXEC; + ss->adjust_symbols = ehdr.e_type == ET_EXEC || + ehdr.e_type == ET_REL; } ss->name = strdup(name); @@ -676,6 +678,14 @@ int dso__load_sym(struct dso *dso, struct map *map, bool remap_kernel = false, adjust_kernel_syms = false; dso->symtab_type = syms_ss->type; + dso->rel = syms_ss->ehdr.e_type == ET_REL; + + /* + * Modules may already have symbols from kallsyms, but those symbols + * have the wrong values for the dso maps, so remove them. + */ + if (kmodule && syms_ss->symtab) + symbols__delete(&dso->symbols[map->type]); if (!syms_ss->symtab) { syms_ss->symtab = syms_ss->dynsym; @@ -828,11 +838,24 @@ int dso__load_sym(struct dso *dso, struct map *map, map_groups__insert(kmap->kmaps, map); } + /* + * The initial module mapping is based on + * /proc/modules mapped to offset zero. + * Overwrite it to map to the module dso. + */ + if (remap_kernel && kmodule) { + remap_kernel = false; + map->pgoff = shdr.sh_offset; + } + curr_map = map; curr_dso = dso; goto new_symbol; } + if (!kmap) + goto new_symbol; + snprintf(dso_name, sizeof(dso_name), "%s%s", dso->short_name, section_name); diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 04300dd..b9056a8 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -854,10 +854,15 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter) if (!runtime_ss && syms_ss) runtime_ss = syms_ss; - if (syms_ss) - ret = dso__load_sym(dso, map, syms_ss, runtime_ss, filter, 0); - else + if (syms_ss) { + int km; + + km = dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE || + dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE; + ret = dso__load_sym(dso, map, syms_ss, runtime_ss, filter, km); + } else { ret = -1; + } if (ret > 0) { int nr_plt; |