Merge branch 'perf/fast' into perf/core
[linux-3.10.git] / tools / perf / 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/cache.h"
14 #include "util/debug.h"
15 #include "util/parse-options.h"
16 #include "util/session.h"
17 #include "util/symbol.h"
18
19 #include <libelf.h>
20
21 static const char *input_name;
22 static bool force;
23 static bool show_kernel;
24 static bool with_hits;
25
26 static const char * const buildid_list_usage[] = {
27         "perf buildid-list [<options>]",
28         NULL
29 };
30
31 static const struct option options[] = {
32         OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
33         OPT_STRING('i', "input", &input_name, "file",
34                     "input file name"),
35         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
36         OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
37         OPT_INCR('v', "verbose", &verbose,
38                     "be more verbose"),
39         OPT_END()
40 };
41
42 static int sysfs__fprintf_build_id(FILE *fp)
43 {
44         u8 kallsyms_build_id[BUILD_ID_SIZE];
45         char sbuild_id[BUILD_ID_SIZE * 2 + 1];
46
47         if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id,
48                                  sizeof(kallsyms_build_id)) != 0)
49                 return -1;
50
51         build_id__sprintf(kallsyms_build_id, sizeof(kallsyms_build_id),
52                           sbuild_id);
53         fprintf(fp, "%s\n", sbuild_id);
54         return 0;
55 }
56
57 static int filename__fprintf_build_id(const char *name, FILE *fp)
58 {
59         u8 build_id[BUILD_ID_SIZE];
60         char sbuild_id[BUILD_ID_SIZE * 2 + 1];
61
62         if (filename__read_build_id(name, build_id,
63                                     sizeof(build_id)) != sizeof(build_id))
64                 return 0;
65
66         build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
67         return fprintf(fp, "%s\n", sbuild_id);
68 }
69
70 static int perf_session__list_build_ids(void)
71 {
72         struct perf_session *session;
73
74         elf_version(EV_CURRENT);
75
76         session = perf_session__new(input_name, O_RDONLY, force, false,
77                                     &build_id__mark_dso_hit_ops);
78         if (session == NULL)
79                 return -1;
80
81         /*
82          * See if this is an ELF file first:
83          */
84         if (filename__fprintf_build_id(session->filename, stdout))
85                 goto out;
86
87         if (with_hits)
88                 perf_session__process_events(session, &build_id__mark_dso_hit_ops);
89
90         perf_session__fprintf_dsos_buildid(session, stdout, with_hits);
91 out:
92         perf_session__delete(session);
93         return 0;
94 }
95
96 static int __cmd_buildid_list(void)
97 {
98         if (show_kernel)
99                 return sysfs__fprintf_build_id(stdout);
100
101         return perf_session__list_build_ids();
102 }
103
104 int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
105 {
106         argc = parse_options(argc, argv, options, buildid_list_usage, 0);
107         setup_pager();
108         return __cmd_buildid_list();
109 }