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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * builtin-buildid-list.c
4 *
5 * Builtin buildid-list command: list buildids in perf.data, in the running
6 * kernel and in ELF files.
7 *
8 * Copyright (C) 2009, Red Hat Inc.
9 * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
10 */
11#include "builtin.h"
12#include "perf.h"
13#include "util/build-id.h"
14#include "util/cache.h"
15#include "util/debug.h"
16#include <subcmd/parse-options.h>
17#include "util/session.h"
18#include "util/symbol.h"
19#include "util/data.h"
20#include <errno.h>
21
22static int sysfs__fprintf_build_id(FILE *fp)
23{
24 char sbuild_id[SBUILD_ID_SIZE];
25 int ret;
26
27 ret = sysfs__sprintf_build_id("/", sbuild_id);
28 if (ret != sizeof(sbuild_id))
29 return ret < 0 ? ret : -EINVAL;
30
31 return fprintf(fp, "%s\n", sbuild_id);
32}
33
34static int filename__fprintf_build_id(const char *name, FILE *fp)
35{
36 char sbuild_id[SBUILD_ID_SIZE];
37 int ret;
38
39 ret = filename__sprintf_build_id(name, sbuild_id);
40 if (ret != sizeof(sbuild_id))
41 return ret < 0 ? ret : -EINVAL;
42
43 return fprintf(fp, "%s\n", sbuild_id);
44}
45
46static bool dso__skip_buildid(struct dso *dso, int with_hits)
47{
48 return with_hits && !dso->hit;
49}
50
51static int perf_session__list_build_ids(bool force, bool with_hits)
52{
53 struct perf_session *session;
54 struct perf_data data = {
55 .file = {
56 .path = input_name,
57 },
58 .mode = PERF_DATA_MODE_READ,
59 .force = force,
60 };
61
62 symbol__elf_init();
63 /*
64 * See if this is an ELF file first:
65 */
66 if (filename__fprintf_build_id(input_name, stdout) > 0)
67 goto out;
68
69 session = perf_session__new(&data, false, &build_id__mark_dso_hit_ops);
70 if (session == NULL)
71 return -1;
72
73 /*
74 * We take all buildids when the file contains AUX area tracing data
75 * because we do not decode the trace because it would take too long.
76 */
77 if (!perf_data__is_pipe(&data) &&
78 perf_header__has_feat(&session->header, HEADER_AUXTRACE))
79 with_hits = false;
80
81 /*
82 * in pipe-mode, the only way to get the buildids is to parse
83 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
84 */
85 if (with_hits || perf_data__is_pipe(&data))
86 perf_session__process_events(session);
87
88 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
89 perf_session__delete(session);
90out:
91 return 0;
92}
93
94int cmd_buildid_list(int argc, const char **argv)
95{
96 bool show_kernel = false;
97 bool with_hits = false;
98 bool force = false;
99 const struct option options[] = {
100 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
101 OPT_STRING('i', "input", &input_name, "file", "input file name"),
102 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
103 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
104 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
105 OPT_END()
106 };
107 const char * const buildid_list_usage[] = {
108 "perf buildid-list [<options>]",
109 NULL
110 };
111
112 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
113 setup_pager();
114
115 if (show_kernel)
116 return !(sysfs__fprintf_build_id(stdout) > 0);
117
118 return perf_session__list_build_ids(force, with_hits);
119}
1/*
2 * builtin-buildid-list.c
3 *
4 * Builtin buildid-list command: list buildids in perf.data, in the running
5 * kernel and in ELF files.
6 *
7 * Copyright (C) 2009, Red Hat Inc.
8 * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
9 */
10#include "builtin.h"
11#include "util/build-id.h"
12#include "util/debug.h"
13#include "util/dso.h"
14#include "util/map.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"
21#include <errno.h>
22#include <inttypes.h>
23#include <linux/err.h>
24
25static int buildid__map_cb(struct map *map, void *arg __maybe_unused)
26{
27 const struct dso *dso = map__dso(map);
28 char bid_buf[SBUILD_ID_SIZE];
29 const char *dso_long_name = dso__long_name(dso);
30 const char *dso_short_name = dso__short_name(dso);
31
32 memset(bid_buf, 0, sizeof(bid_buf));
33 if (dso__has_build_id(dso))
34 build_id__sprintf(dso__bid_const(dso), bid_buf);
35 printf("%s %16" PRIx64 " %16" PRIx64, bid_buf, map__start(map), map__end(map));
36 if (dso_long_name != NULL)
37 printf(" %s", dso_long_name);
38 else if (dso_short_name != NULL)
39 printf(" %s", dso_short_name);
40
41 printf("\n");
42
43 return 0;
44}
45
46static void buildid__show_kernel_maps(void)
47{
48 struct machine *machine;
49
50 machine = machine__new_host();
51 machine__for_each_kernel_map(machine, buildid__map_cb, NULL);
52 machine__delete(machine);
53}
54
55static int sysfs__fprintf_build_id(FILE *fp)
56{
57 char sbuild_id[SBUILD_ID_SIZE];
58 int ret;
59
60 ret = sysfs__sprintf_build_id("/", sbuild_id);
61 if (ret != sizeof(sbuild_id))
62 return ret < 0 ? ret : -EINVAL;
63
64 return fprintf(fp, "%s\n", sbuild_id);
65}
66
67static int filename__fprintf_build_id(const char *name, FILE *fp)
68{
69 char sbuild_id[SBUILD_ID_SIZE];
70 int ret;
71
72 ret = filename__sprintf_build_id(name, sbuild_id);
73 if (ret != sizeof(sbuild_id))
74 return ret < 0 ? ret : -EINVAL;
75
76 return fprintf(fp, "%s\n", sbuild_id);
77}
78
79static bool dso__skip_buildid(struct dso *dso, int with_hits)
80{
81 return with_hits && !dso__hit(dso);
82}
83
84static int perf_session__list_build_ids(bool force, bool with_hits)
85{
86 struct perf_session *session;
87 struct perf_data data = {
88 .path = input_name,
89 .mode = PERF_DATA_MODE_READ,
90 .force = force,
91 };
92 struct perf_tool build_id__mark_dso_hit_ops;
93
94 symbol__elf_init();
95 /*
96 * See if this is an ELF file first:
97 */
98 if (filename__fprintf_build_id(input_name, stdout) > 0)
99 goto out;
100
101 perf_tool__init(&build_id__mark_dso_hit_ops, /*ordered_events=*/true);
102 build_id__mark_dso_hit_ops.sample = build_id__mark_dso_hit;
103 build_id__mark_dso_hit_ops.mmap = perf_event__process_mmap;
104 build_id__mark_dso_hit_ops.mmap2 = perf_event__process_mmap2;
105 build_id__mark_dso_hit_ops.fork = perf_event__process_fork;
106 build_id__mark_dso_hit_ops.exit = perf_event__exit_del_thread;
107 build_id__mark_dso_hit_ops.attr = perf_event__process_attr;
108 build_id__mark_dso_hit_ops.build_id = perf_event__process_build_id;
109
110 session = perf_session__new(&data, &build_id__mark_dso_hit_ops);
111 if (IS_ERR(session))
112 return PTR_ERR(session);
113
114 /*
115 * We take all buildids when the file contains AUX area tracing data
116 * because we do not decode the trace because it would take too long.
117 */
118 if (!perf_data__is_pipe(&data) &&
119 perf_header__has_feat(&session->header, HEADER_AUXTRACE))
120 with_hits = false;
121
122 if (!perf_header__has_feat(&session->header, HEADER_BUILD_ID))
123 with_hits = true;
124
125 if (zstd_init(&(session->zstd_data), 0) < 0)
126 pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
127
128 /*
129 * in pipe-mode, the only way to get the buildids is to parse
130 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
131 */
132 if (with_hits || perf_data__is_pipe(&data))
133 perf_session__process_events(session);
134
135 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
136 perf_session__delete(session);
137out:
138 return 0;
139}
140
141int cmd_buildid_list(int argc, const char **argv)
142{
143 bool show_kernel = false;
144 bool show_kernel_maps = false;
145 bool with_hits = false;
146 bool force = false;
147 const struct option options[] = {
148 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
149 OPT_STRING('i', "input", &input_name, "file", "input file name"),
150 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
151 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
152 OPT_BOOLEAN('m', "kernel-maps", &show_kernel_maps,
153 "Show build id of current kernel + modules"),
154 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
155 OPT_END()
156 };
157 const char * const buildid_list_usage[] = {
158 "perf buildid-list [<options>]",
159 NULL
160 };
161
162 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
163 setup_pager();
164
165 if (show_kernel) {
166 return !(sysfs__fprintf_build_id(stdout) > 0);
167 } else if (show_kernel_maps) {
168 buildid__show_kernel_maps();
169 return 0;
170 }
171
172 return perf_session__list_build_ids(force, with_hits);
173}