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 #include "util/data.h" 19 20 static int sysfs__fprintf_build_id(FILE *fp) 21 { 22 char sbuild_id[SBUILD_ID_SIZE]; 23 int ret; 24 25 ret = sysfs__sprintf_build_id("/", sbuild_id); 26 if (ret != sizeof(sbuild_id)) 27 return ret < 0 ? ret : -EINVAL; 28 29 return fprintf(fp, "%s\n", sbuild_id); 30 } 31 32 static int filename__fprintf_build_id(const char *name, FILE *fp) 33 { 34 char sbuild_id[SBUILD_ID_SIZE]; 35 int ret; 36 37 ret = filename__sprintf_build_id(name, sbuild_id); 38 if (ret != sizeof(sbuild_id)) 39 return ret < 0 ? ret : -EINVAL; 40 41 return fprintf(fp, "%s\n", sbuild_id); 42 } 43 44 static bool dso__skip_buildid(struct dso *dso, int with_hits) 45 { 46 return with_hits && !dso->hit; 47 } 48 49 static int perf_session__list_build_ids(bool force, bool with_hits) 50 { 51 struct perf_session *session; 52 struct perf_data_file file = { 53 .path = input_name, 54 .mode = PERF_DATA_MODE_READ, 55 .force = force, 56 }; 57 58 symbol__elf_init(); 59 /* 60 * See if this is an ELF file first: 61 */ 62 if (filename__fprintf_build_id(input_name, stdout) > 0) 63 goto out; 64 65 session = perf_session__new(&file, false, &build_id__mark_dso_hit_ops); 66 if (session == NULL) 67 return -1; 68 69 /* 70 * We take all buildids when the file contains AUX area tracing data 71 * because we do not decode the trace because it would take too long. 72 */ 73 if (!perf_data_file__is_pipe(&file) && 74 perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 75 with_hits = false; 76 77 /* 78 * in pipe-mode, the only way to get the buildids is to parse 79 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID 80 */ 81 if (with_hits || perf_data_file__is_pipe(&file)) 82 perf_session__process_events(session); 83 84 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits); 85 perf_session__delete(session); 86 out: 87 return 0; 88 } 89 90 int cmd_buildid_list(int argc, const char **argv, 91 const char *prefix __maybe_unused) 92 { 93 bool show_kernel = false; 94 bool with_hits = false; 95 bool force = false; 96 const struct option options[] = { 97 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"), 98 OPT_STRING('i', "input", &input_name, "file", "input file name"), 99 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), 100 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"), 101 OPT_INCR('v', "verbose", &verbose, "be more verbose"), 102 OPT_END() 103 }; 104 const char * const buildid_list_usage[] = { 105 "perf buildid-list [<options>]", 106 NULL 107 }; 108 109 argc = parse_options(argc, argv, options, buildid_list_usage, 0); 110 setup_pager(); 111 112 if (show_kernel) 113 return sysfs__fprintf_build_id(stdout); 114 115 return perf_session__list_build_ids(force, with_hits); 116 } 117