2 * builtin-buildid-list.c
4 * Builtin buildid-list command: list buildids in perf.data, in the running
5 * kernel and in ELF files.
7 * Copyright (C) 2009, Red Hat Inc.
8 * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
12 #include "util/build-id.h"
13 #include "util/cache.h"
14 #include "util/debug.h"
15 #include "util/parse-options.h"
16 #include "util/session.h"
17 #include "util/symbol.h"
21 static char const *input_name = "perf.data";
23 static bool show_kernel;
24 static bool with_hits;
26 static const char * const buildid_list_usage[] = {
27 "perf buildid-list [<options>]",
31 static const struct option options[] = {
32 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
33 OPT_STRING('i', "input", &input_name, "file",
35 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
36 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
37 OPT_INCR('v', "verbose", &verbose,
42 static int perf_session__list_build_ids(void)
44 struct perf_session *session;
46 session = perf_session__new(input_name, O_RDONLY, force, false,
47 &build_id__mark_dso_hit_ops);
52 perf_session__process_events(session, &build_id__mark_dso_hit_ops);
54 perf_session__fprintf_dsos_buildid(session, stdout, with_hits);
56 perf_session__delete(session);
60 static int sysfs__fprintf_build_id(FILE *fp)
62 u8 kallsyms_build_id[BUILD_ID_SIZE];
63 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
65 if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id,
66 sizeof(kallsyms_build_id)) != 0)
69 build_id__sprintf(kallsyms_build_id, sizeof(kallsyms_build_id),
71 fprintf(fp, "%s\n", sbuild_id);
75 static int filename__fprintf_build_id(const char *name, FILE *fp)
77 u8 build_id[BUILD_ID_SIZE];
78 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
80 if (filename__read_build_id(name, build_id,
81 sizeof(build_id)) != sizeof(build_id))
84 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
85 return fprintf(fp, "%s\n", sbuild_id);
88 static int __cmd_buildid_list(void)
91 return sysfs__fprintf_build_id(stdout);
93 elf_version(EV_CURRENT);
95 * See if this is an ELF file first:
97 if (filename__fprintf_build_id(input_name, stdout))
100 return perf_session__list_build_ids();
103 int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
105 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
107 return __cmd_buildid_list();