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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 "perf.h"
12#include "util/build-id.h"
13#include "util/cache.h"
14#include "util/debug.h"
15#include <subcmd/parse-options.h>
16#include "util/session.h"
17#include "util/symbol.h"
18#include "util/data.h"
19
20static int sysfs__fprintf_build_id(FILE *fp)
21{
22 char sbuild_id[SBUILD_ID_SIZE];
23 int ret;
24
25 ret = sysfs__sprintf_build_id("/", sbuild_id);
26 if (ret != sizeof(sbuild_id))
27 return ret < 0 ? ret : -EINVAL;
28
29 return fprintf(fp, "%s\n", sbuild_id);
30}
31
32static int filename__fprintf_build_id(const char *name, FILE *fp)
33{
34 char sbuild_id[SBUILD_ID_SIZE];
35 int ret;
36
37 ret = filename__sprintf_build_id(name, sbuild_id);
38 if (ret != sizeof(sbuild_id))
39 return ret < 0 ? ret : -EINVAL;
40
41 return fprintf(fp, "%s\n", sbuild_id);
42}
43
44static bool dso__skip_buildid(struct dso *dso, int with_hits)
45{
46 return with_hits && !dso->hit;
47}
48
49static int perf_session__list_build_ids(bool force, bool with_hits)
50{
51 struct perf_session *session;
52 struct perf_data_file file = {
53 .path = input_name,
54 .mode = PERF_DATA_MODE_READ,
55 .force = force,
56 };
57
58 symbol__elf_init();
59 /*
60 * See if this is an ELF file first:
61 */
62 if (filename__fprintf_build_id(input_name, stdout) > 0)
63 goto out;
64
65 session = perf_session__new(&file, false, &build_id__mark_dso_hit_ops);
66 if (session == NULL)
67 return -1;
68
69 /*
70 * We take all buildids when the file contains AUX area tracing data
71 * because we do not decode the trace because it would take too long.
72 */
73 if (!perf_data_file__is_pipe(&file) &&
74 perf_header__has_feat(&session->header, HEADER_AUXTRACE))
75 with_hits = false;
76
77 /*
78 * in pipe-mode, the only way to get the buildids is to parse
79 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
80 */
81 if (with_hits || perf_data_file__is_pipe(&file))
82 perf_session__process_events(session);
83
84 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
85 perf_session__delete(session);
86out:
87 return 0;
88}
89
90int cmd_buildid_list(int argc, const char **argv,
91 const char *prefix __maybe_unused)
92{
93 bool show_kernel = false;
94 bool with_hits = false;
95 bool force = false;
96 const struct option options[] = {
97 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
98 OPT_STRING('i', "input", &input_name, "file", "input file name"),
99 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
100 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
101 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
102 OPT_END()
103 };
104 const char * const buildid_list_usage[] = {
105 "perf buildid-list [<options>]",
106 NULL
107 };
108
109 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
110 setup_pager();
111
112 if (show_kernel)
113 return !(sysfs__fprintf_build_id(stdout) > 0);
114
115 return perf_session__list_build_ids(force, with_hits);
116}
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 "perf.h"
12#include "util/build-id.h"
13#include "util/debug.h"
14#include "util/dso.h"
15#include "util/map.h"
16#include <subcmd/pager.h>
17#include <subcmd/parse-options.h>
18#include "util/session.h"
19#include "util/symbol.h"
20#include "util/data.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;
28 char bid_buf[SBUILD_ID_SIZE];
29
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->end);
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);
38 }
39 printf("\n");
40
41 return 0;
42}
43
44static void buildid__show_kernel_maps(void)
45{
46 struct machine *machine;
47
48 machine = machine__new_host();
49 machine__for_each_kernel_map(machine, buildid__map_cb, NULL);
50 machine__delete(machine);
51}
52
53static int sysfs__fprintf_build_id(FILE *fp)
54{
55 char sbuild_id[SBUILD_ID_SIZE];
56 int ret;
57
58 ret = sysfs__sprintf_build_id("/", sbuild_id);
59 if (ret != sizeof(sbuild_id))
60 return ret < 0 ? ret : -EINVAL;
61
62 return fprintf(fp, "%s\n", sbuild_id);
63}
64
65static int filename__fprintf_build_id(const char *name, FILE *fp)
66{
67 char sbuild_id[SBUILD_ID_SIZE];
68 int ret;
69
70 ret = filename__sprintf_build_id(name, sbuild_id);
71 if (ret != sizeof(sbuild_id))
72 return ret < 0 ? ret : -EINVAL;
73
74 return fprintf(fp, "%s\n", sbuild_id);
75}
76
77static bool dso__skip_buildid(struct dso *dso, int with_hits)
78{
79 return with_hits && !dso->hit;
80}
81
82static int perf_session__list_build_ids(bool force, bool with_hits)
83{
84 struct perf_session *session;
85 struct perf_data data = {
86 .path = input_name,
87 .mode = PERF_DATA_MODE_READ,
88 .force = force,
89 };
90
91 symbol__elf_init();
92 /*
93 * See if this is an ELF file first:
94 */
95 if (filename__fprintf_build_id(input_name, stdout) > 0)
96 goto out;
97
98 session = perf_session__new(&data, &build_id__mark_dso_hit_ops);
99 if (IS_ERR(session))
100 return PTR_ERR(session);
101
102 /*
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.
105 */
106 if (!perf_data__is_pipe(&data) &&
107 perf_header__has_feat(&session->header, HEADER_AUXTRACE))
108 with_hits = false;
109
110 if (!perf_header__has_feat(&session->header, HEADER_BUILD_ID))
111 with_hits = true;
112
113 if (zstd_init(&(session->zstd_data), 0) < 0)
114 pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
115
116 /*
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
119 */
120 if (with_hits || perf_data__is_pipe(&data))
121 perf_session__process_events(session);
122
123 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
124 perf_session__delete(session);
125out:
126 return 0;
127}
128
129int cmd_buildid_list(int argc, const char **argv)
130{
131 bool show_kernel = false;
132 bool show_kernel_maps = false;
133 bool with_hits = false;
134 bool force = 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"),
143 OPT_END()
144 };
145 const char * const buildid_list_usage[] = {
146 "perf buildid-list [<options>]",
147 NULL
148 };
149
150 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
151 setup_pager();
152
153 if (show_kernel) {
154 return !(sysfs__fprintf_build_id(stdout) > 0);
155 } else if (show_kernel_maps) {
156 buildid__show_kernel_maps();
157 return 0;
158 }
159
160 return perf_session__list_build_ids(force, with_hits);
161}