From d3b52f71d18513c209465ba65e0c524b9733351b Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 24 Apr 2023 08:51:07 +0300 Subject: [PATCH] perf script: Refine printing of dso offset (dsoff) Print dso offset only for object files, and in those cases force using the dso->long_name if the dso->name starts with '[' or the dso is kcore, in order to avoid special names such as [vdso], or mixing up kcore with vmlinux. Signed-off-by: Adrian Hunter Cc: Changbin Du Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20230424055107.12105-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.c | 33 +++++++++++++++++++++++++++++++++ tools/perf/util/dso.h | 2 ++ tools/perf/util/map.c | 23 +++++++++++++++++++---- 3 files changed, 54 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index a866145..046fbfc 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -67,6 +67,39 @@ char dso__symtab_origin(const struct dso *dso) return origin[dso->symtab_type]; } +bool dso__is_object_file(const struct dso *dso) +{ + switch (dso->binary_type) { + case DSO_BINARY_TYPE__KALLSYMS: + case DSO_BINARY_TYPE__GUEST_KALLSYMS: + case DSO_BINARY_TYPE__JAVA_JIT: + case DSO_BINARY_TYPE__BPF_PROG_INFO: + case DSO_BINARY_TYPE__BPF_IMAGE: + case DSO_BINARY_TYPE__OOL: + return false; + case DSO_BINARY_TYPE__VMLINUX: + case DSO_BINARY_TYPE__GUEST_VMLINUX: + case DSO_BINARY_TYPE__DEBUGLINK: + case DSO_BINARY_TYPE__BUILD_ID_CACHE: + case DSO_BINARY_TYPE__BUILD_ID_CACHE_DEBUGINFO: + case DSO_BINARY_TYPE__FEDORA_DEBUGINFO: + case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO: + case DSO_BINARY_TYPE__MIXEDUP_UBUNTU_DEBUGINFO: + case DSO_BINARY_TYPE__BUILDID_DEBUGINFO: + case DSO_BINARY_TYPE__SYSTEM_PATH_DSO: + case DSO_BINARY_TYPE__GUEST_KMODULE: + case DSO_BINARY_TYPE__GUEST_KMODULE_COMP: + case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE: + case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP: + case DSO_BINARY_TYPE__KCORE: + case DSO_BINARY_TYPE__GUEST_KCORE: + case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO: + case DSO_BINARY_TYPE__NOT_FOUND: + default: + return true; + } +} + int dso__read_binary_type_filename(const struct dso *dso, enum dso_binary_type type, char *root_dir, char *filename, size_t size) diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index dfc4cf3..b23a157 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -396,6 +396,8 @@ static inline bool dso__is_kallsyms(const struct dso *dso) return dso->kernel && dso->long_name[0] != '/'; } +bool dso__is_object_file(const struct dso *dso); + void dso__free_a2l(struct dso *dso); enum dso_type dso__type(struct dso *dso, struct machine *machine); diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 8c96ce6..4d9944b 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -431,14 +431,21 @@ size_t map__fprintf(struct map *map, FILE *fp) map__start(map), map__end(map), map__pgoff(map), dso->name); } -size_t map__fprintf_dsoname(struct map *map, FILE *fp) +static bool prefer_dso_long_name(const struct dso *dso, bool print_off) +{ + return dso->long_name && + (symbol_conf.show_kernel_path || + (print_off && (dso->name[0] == '[' || dso__is_kcore(dso)))); +} + +static size_t __map__fprintf_dsoname(struct map *map, bool print_off, FILE *fp) { char buf[symbol_conf.pad_output_len_dso + 1]; const char *dsoname = "[unknown]"; const struct dso *dso = map ? map__dso(map) : NULL; if (dso) { - if (symbol_conf.show_kernel_path && dso->long_name) + if (prefer_dso_long_name(dso, print_off)) dsoname = dso->long_name; else dsoname = dso->name; @@ -452,13 +459,21 @@ size_t map__fprintf_dsoname(struct map *map, FILE *fp) return fprintf(fp, "%s", dsoname); } +size_t map__fprintf_dsoname(struct map *map, FILE *fp) +{ + return __map__fprintf_dsoname(map, false, fp); +} + size_t map__fprintf_dsoname_dsoff(struct map *map, bool print_off, u64 addr, FILE *fp) { + const struct dso *dso = map ? map__dso(map) : NULL; int printed = 0; + if (print_off && (!dso || !dso__is_object_file(dso))) + print_off = false; printed += fprintf(fp, " ("); - printed += map__fprintf_dsoname(map, fp); - if (print_off && map && map__dso(map) && !map__dso(map)->kernel) + printed += __map__fprintf_dsoname(map, print_off, fp); + if (print_off) printed += fprintf(fp, "+0x%" PRIx64, addr); printed += fprintf(fp, ")"); -- 2.7.4