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>
11 #include "util/build-id.h"
12 #include "util/debug.h"
15 #include <subcmd/pager.h>
16 #include <subcmd/parse-options.h>
17 #include "util/session.h"
18 #include "util/symbol.h"
19 #include "util/data.h"
20 #include "util/util.h"
23 #include <linux/err.h>
25 static int buildid__map_cb(struct map *map, void *arg __maybe_unused)
27 const struct dso *dso = map__dso(map);
28 char bid_buf[SBUILD_ID_SIZE];
30 memset(bid_buf, 0, sizeof(bid_buf));
31 if (dso->has_build_id)
32 build_id__sprintf(&dso->bid, bid_buf);
33 printf("%s %16" PRIx64 " %16" PRIx64, bid_buf, map__start(map), map__end(map));
34 if (dso->long_name != NULL) {
35 printf(" %s", dso->long_name);
36 } else if (dso->short_name != NULL) {
37 printf(" %s", dso->short_name);
44 static void buildid__show_kernel_maps(void)
46 struct machine *machine;
48 machine = machine__new_host();
49 machine__for_each_kernel_map(machine, buildid__map_cb, NULL);
50 machine__delete(machine);
53 static int sysfs__fprintf_build_id(FILE *fp)
55 char sbuild_id[SBUILD_ID_SIZE];
58 ret = sysfs__sprintf_build_id("/", sbuild_id);
59 if (ret != sizeof(sbuild_id))
60 return ret < 0 ? ret : -EINVAL;
62 return fprintf(fp, "%s\n", sbuild_id);
65 static int filename__fprintf_build_id(const char *name, FILE *fp)
67 char sbuild_id[SBUILD_ID_SIZE];
70 ret = filename__sprintf_build_id(name, sbuild_id);
71 if (ret != sizeof(sbuild_id))
72 return ret < 0 ? ret : -EINVAL;
74 return fprintf(fp, "%s\n", sbuild_id);
77 static bool dso__skip_buildid(struct dso *dso, int with_hits)
79 return with_hits && !dso->hit;
82 static int perf_session__list_build_ids(bool force, bool with_hits)
84 struct perf_session *session;
85 struct perf_data data = {
87 .mode = PERF_DATA_MODE_READ,
93 * See if this is an ELF file first:
95 if (filename__fprintf_build_id(input_name, stdout) > 0)
98 session = perf_session__new(&data, &build_id__mark_dso_hit_ops);
100 return PTR_ERR(session);
103 * We take all buildids when the file contains AUX area tracing data
104 * because we do not decode the trace because it would take too long.
106 if (!perf_data__is_pipe(&data) &&
107 perf_header__has_feat(&session->header, HEADER_AUXTRACE))
110 if (!perf_header__has_feat(&session->header, HEADER_BUILD_ID))
113 if (zstd_init(&(session->zstd_data), 0) < 0)
114 pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
117 * in pipe-mode, the only way to get the buildids is to parse
118 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
120 if (with_hits || perf_data__is_pipe(&data))
121 perf_session__process_events(session);
123 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
124 perf_session__delete(session);
129 int cmd_buildid_list(int argc, const char **argv)
131 bool show_kernel = false;
132 bool show_kernel_maps = false;
133 bool with_hits = false;
135 const struct option options[] = {
136 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
137 OPT_STRING('i', "input", &input_name, "file", "input file name"),
138 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
139 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
140 OPT_BOOLEAN('m', "kernel-maps", &show_kernel_maps,
141 "Show build id of current kernel + modules"),
142 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
145 const char * const buildid_list_usage[] = {
146 "perf buildid-list [<options>]",
150 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
154 return !(sysfs__fprintf_build_id(stdout) > 0);
155 } else if (show_kernel_maps) {
156 buildid__show_kernel_maps();
160 return perf_session__list_build_ids(force, with_hits);