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Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -02001/*
2 * builtin-buildid-list.c
3 *
Arnaldo Carvalho de Melo7a6f2052011-08-29 08:33:17 -03004 * Builtin buildid-list command: list buildids in perf.data, in the running
5 * kernel and in ELF files.
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -02006 *
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"
Arnaldo Carvalho de Melo7b2567c2010-02-03 16:52:04 -020012#include "util/build-id.h"
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -020013#include "util/cache.h"
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -020014#include "util/debug.h"
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -020015#include "util/parse-options.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020016#include "util/session.h"
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -020017#include "util/symbol.h"
18
Arnaldo Carvalho de Melo7a6f2052011-08-29 08:33:17 -030019#include <libelf.h>
20
Robert Richterefad1412011-12-07 10:02:54 +010021static const char *input_name;
Ian Munsiec0555642010-04-13 18:37:33 +100022static bool force;
Arnaldo Carvalho de Melof2add9c2011-08-29 08:07:22 -030023static bool show_kernel;
Arnaldo Carvalho de Melo88d3d9b72010-01-14 23:45:30 -020024static bool with_hits;
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -020025
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -020026static const char * const buildid_list_usage[] = {
Arnaldo Carvalho de Melob9b1e1c2009-12-06 18:03:10 -020027 "perf buildid-list [<options>]",
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -020028 NULL
29};
30
31static const struct option options[] = {
Arnaldo Carvalho de Melo88d3d9b72010-01-14 23:45:30 -020032 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -020033 OPT_STRING('i', "input", &input_name, "file",
34 "input file name"),
35 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
Arnaldo Carvalho de Melof2add9c2011-08-29 08:07:22 -030036 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
Ian Munsiec0555642010-04-13 18:37:33 +100037 OPT_INCR('v', "verbose", &verbose,
Arnaldo Carvalho de Melo1124ba72009-11-16 21:45:25 -020038 "be more verbose"),
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -020039 OPT_END()
40};
41
Arnaldo Carvalho de Melof2add9c2011-08-29 08:07:22 -030042static 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
Arnaldo Carvalho de Melo7a6f2052011-08-29 08:33:17 -030057static 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
Robert Richter1b549502011-12-07 10:02:53 +010070static int perf_session__list_build_ids(void)
71{
72 struct perf_session *session;
73
Robert Richterefad1412011-12-07 10:02:54 +010074 elf_version(EV_CURRENT);
75
Robert Richter1b549502011-12-07 10:02:53 +010076 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
Robert Richterefad1412011-12-07 10:02:54 +010081 /*
82 * See if this is an ELF file first:
83 */
84 if (filename__fprintf_build_id(session->filename, stdout))
85 goto out;
86
Stephane Eranian299c3452012-05-15 13:28:15 +020087 /*
88 * in pipe-mode, the only way to get the buildids is to parse
89 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
90 */
91 if (with_hits || session->fd_pipe)
Robert Richter1b549502011-12-07 10:02:53 +010092 perf_session__process_events(session, &build_id__mark_dso_hit_ops);
93
94 perf_session__fprintf_dsos_buildid(session, stdout, with_hits);
Robert Richterefad1412011-12-07 10:02:54 +010095out:
Robert Richter1b549502011-12-07 10:02:53 +010096 perf_session__delete(session);
97 return 0;
98}
99
Arnaldo Carvalho de Melof2add9c2011-08-29 08:07:22 -0300100static int __cmd_buildid_list(void)
101{
Arnaldo Carvalho de Melof2add9c2011-08-29 08:07:22 -0300102 if (show_kernel)
103 return sysfs__fprintf_build_id(stdout);
104
105 return perf_session__list_build_ids();
106}
107
Arnaldo Carvalho de Meloc34984b2009-11-16 16:32:45 -0200108int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
109{
110 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
111 setup_pager();
112 return __cmd_buildid_list();
113}