GNU Linux-libre 4.19.211-gnu1
[releases.git] / tools / perf / builtin-buildid-list.c
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
22 static 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
34 static 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
46 static bool dso__skip_buildid(struct dso *dso, int with_hits)
47 {
48         return with_hits && !dso->hit;
49 }
50
51 static 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);
90 out:
91         return 0;
92 }
93
94 int 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 }