diff options
| -rw-r--r-- | tools/perf/Documentation/perf-buildid-list.txt | 3 | ||||
| -rw-r--r-- | tools/perf/builtin-buildid-list.c | 27 |
2 files changed, 26 insertions, 4 deletions
diff --git a/tools/perf/Documentation/perf-buildid-list.txt b/tools/perf/Documentation/perf-buildid-list.txt index 770a7f3bd75..cc22325ffd1 100644 --- a/tools/perf/Documentation/perf-buildid-list.txt +++ b/tools/perf/Documentation/perf-buildid-list.txt @@ -16,7 +16,8 @@ This command displays the buildids found in a perf.data file, so that other tools can be used to fetch packages with matching symbol tables for use by perf report. -It can also be used to show the build id of the running kernel. +It can also be used to show the build id of the running kernel or in an ELF +file using -i/--input. OPTIONS ------- diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c index 4102eadcf84..cb690a65bf0 100644 --- a/tools/perf/builtin-buildid-list.c +++ b/tools/perf/builtin-buildid-list.c @@ -1,8 +1,8 @@ /* * builtin-buildid-list.c * - * Builtin buildid-list command: list buildids in perf.data or in the running - * kernel. + * Builtin buildid-list command: list buildids in perf.data, in the running + * kernel and in ELF files. * * Copyright (C) 2009, Red Hat Inc. * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com> @@ -16,6 +16,8 @@ #include "util/session.h" #include "util/symbol.h" +#include <libelf.h> + static char const *input_name = "perf.data"; static bool force; static bool show_kernel; @@ -70,12 +72,31 @@ static int sysfs__fprintf_build_id(FILE *fp) return 0; } -static int __cmd_buildid_list(void) +static int filename__fprintf_build_id(const char *name, FILE *fp) { + u8 build_id[BUILD_ID_SIZE]; + char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + if (filename__read_build_id(name, build_id, + sizeof(build_id)) != sizeof(build_id)) + return 0; + + build_id__sprintf(build_id, sizeof(build_id), sbuild_id); + return fprintf(fp, "%s\n", sbuild_id); +} + +static int __cmd_buildid_list(void) +{ if (show_kernel) return sysfs__fprintf_build_id(stdout); + elf_version(EV_CURRENT); + /* + * See if this is an ELF file first: + */ + if (filename__fprintf_build_id(input_name, stdout)) + return 0; + return perf_session__list_build_ids(); } |