e3ef75583514b61ffe571f4258332a5ca937e7d8
[releases.git] / builtin-buildid-list.c
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 <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 <errno.h>
21 #include <linux/err.h>
22
23 static int sysfs__fprintf_build_id(FILE *fp)
24 {
25         char sbuild_id[SBUILD_ID_SIZE];
26         int ret;
27
28         ret = sysfs__sprintf_build_id("/", sbuild_id);
29         if (ret != sizeof(sbuild_id))
30                 return ret < 0 ? ret : -EINVAL;
31
32         return fprintf(fp, "%s\n", sbuild_id);
33 }
34
35 static int filename__fprintf_build_id(const char *name, FILE *fp)
36 {
37         char sbuild_id[SBUILD_ID_SIZE];
38         int ret;
39
40         ret = filename__sprintf_build_id(name, sbuild_id);
41         if (ret != sizeof(sbuild_id))
42                 return ret < 0 ? ret : -EINVAL;
43
44         return fprintf(fp, "%s\n", sbuild_id);
45 }
46
47 static bool dso__skip_buildid(struct dso *dso, int with_hits)
48 {
49         return with_hits && !dso->hit;
50 }
51
52 static int perf_session__list_build_ids(bool force, bool with_hits)
53 {
54         struct perf_session *session;
55         struct perf_data data = {
56                 .path  = input_name,
57                 .mode  = PERF_DATA_MODE_READ,
58                 .force = force,
59         };
60
61         symbol__elf_init();
62         /*
63          * See if this is an ELF file first:
64          */
65         if (filename__fprintf_build_id(input_name, stdout) > 0)
66                 goto out;
67
68         session = perf_session__new(&data, false, &build_id__mark_dso_hit_ops);
69         if (IS_ERR(session))
70                 return PTR_ERR(session);
71
72         /*
73          * We take all buildids when the file contains AUX area tracing data
74          * because we do not decode the trace because it would take too long.
75          */
76         if (!perf_data__is_pipe(&data) &&
77             perf_header__has_feat(&session->header, HEADER_AUXTRACE))
78                 with_hits = false;
79
80         /*
81          * in pipe-mode, the only way to get the buildids is to parse
82          * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
83          */
84         if (with_hits || perf_data__is_pipe(&data))
85                 perf_session__process_events(session);
86
87         perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
88         perf_session__delete(session);
89 out:
90         return 0;
91 }
92
93 int cmd_buildid_list(int argc, const char **argv)
94 {
95         bool show_kernel = false;
96         bool with_hits = false;
97         bool force = false;
98         const struct option options[] = {
99         OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
100         OPT_STRING('i', "input", &input_name, "file", "input file name"),
101         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
102         OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
103         OPT_INCR('v', "verbose", &verbose, "be more verbose"),
104         OPT_END()
105         };
106         const char * const buildid_list_usage[] = {
107                 "perf buildid-list [<options>]",
108                 NULL
109         };
110
111         argc = parse_options(argc, argv, options, buildid_list_usage, 0);
112         setup_pager();
113
114         if (show_kernel)
115                 return !(sysfs__fprintf_build_id(stdout) > 0);
116
117         return perf_session__list_build_ids(force, with_hits);
118 }