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
 21static const char *input_name;
 22static bool force;
 23static bool show_kernel;
 24static bool with_hits;
 25
 26static const char * const buildid_list_usage[] = {
 27	"perf buildid-list [<options>]",
 28	NULL
 29};
 30
 31static 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
 42static 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
 57static 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
 70static 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	/*
 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)
 92		perf_session__process_events(session, &build_id__mark_dso_hit_ops);
 93
 94	perf_session__fprintf_dsos_buildid(session, stdout, with_hits);
 95out:
 96	perf_session__delete(session);
 97	return 0;
 98}
 99
100static int __cmd_buildid_list(void)
101{
102	if (show_kernel)
103		return sysfs__fprintf_build_id(stdout);
104
105	return perf_session__list_build_ids();
106}
107
108int 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}

 1/*
 2 * builtin-buildid-list.c
 3 *
 4 * Builtin buildid-list command: list buildids in perf.data
 
 5 *
 6 * Copyright (C) 2009, Red Hat Inc.
 7 * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
 8 */
 9#include "builtin.h"
10#include "perf.h"
11#include "util/build-id.h"
12#include "util/cache.h"
13#include "util/debug.h"
14#include "util/parse-options.h"
15#include "util/session.h"
16#include "util/symbol.h"
17
18static char const *input_name = "perf.data";
 
 
19static bool force;
 
20static bool with_hits;
21
22static const char * const buildid_list_usage[] = {
23	"perf buildid-list [<options>]",
24	NULL
25};
26
27static const struct option options[] = {
28	OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
29	OPT_STRING('i', "input", &input_name, "file",
30		    "input file name"),
31	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 
32	OPT_INCR('v', "verbose", &verbose,
33		    "be more verbose"),
34	OPT_END()
35};
36
37static int __cmd_buildid_list(void)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
38{
39	struct perf_session *session;
40
 
 
41	session = perf_session__new(input_name, O_RDONLY, force, false,
42				    &build_id__mark_dso_hit_ops);
43	if (session == NULL)
44		return -1;
45
46	if (with_hits)
 
 
 
 
 
 
 
 
 
 
47		perf_session__process_events(session, &build_id__mark_dso_hit_ops);
48
49	perf_session__fprintf_dsos_buildid(session, stdout, with_hits);
50
51	perf_session__delete(session);
52	return 0;
 
 
 
 
 
 
 
 
53}
54
55int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
56{
57	argc = parse_options(argc, argv, options, buildid_list_usage, 0);
58	setup_pager();
59	return __cmd_buildid_list();
60}