1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * builtin-buildid-list.c 4 * 5 * Builtin buildid-list command: list buildids in perf.data, in the running 6 * kernel and in ELF files. 7 * 8 * Copyright (C) 2009, Red Hat Inc. 9 * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com> 10 */ 11 #include "builtin.h" 12 #include "perf.h" 13 #include "util/build-id.h" 14 #include "util/cache.h" 15 #include "util/debug.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 22 static int sysfs__fprintf_build_id(FILE *fp) 23 { 24 char sbuild_id[SBUILD_ID_SIZE]; 25 int ret; 26 27 ret = sysfs__sprintf_build_id("/", sbuild_id); 28 if (ret != sizeof(sbuild_id)) 29 return ret < 0 ? ret : -EINVAL; 30 31 return fprintf(fp, "%s\n", sbuild_id); 32 } 33 34 static int filename__fprintf_build_id(const char *name, FILE *fp) 35 { 36 char sbuild_id[SBUILD_ID_SIZE]; 37 int ret; 38 39 ret = filename__sprintf_build_id(name, sbuild_id); 40 if (ret != sizeof(sbuild_id)) 41 return ret < 0 ? ret : -EINVAL; 42 43 return fprintf(fp, "%s\n", sbuild_id); 44 } 45 46 static bool dso__skip_buildid(struct dso *dso, int with_hits) 47 { 48 return with_hits && !dso->hit; 49 } 50 51 static int perf_session__list_build_ids(bool force, bool with_hits) 52 { 53 struct perf_session *session; 54 struct perf_data data = { 55 .file = { 56 .path = input_name, 57 }, 58 .mode = PERF_DATA_MODE_READ, 59 .force = force, 60 }; 61 62 symbol__elf_init(); 63 /* 64 * See if this is an ELF file first: 65 */ 66 if (filename__fprintf_build_id(input_name, stdout) > 0) 67 goto out; 68 69 session = perf_session__new(&data, false, &build_id__mark_dso_hit_ops); 70 if (session == NULL) 71 return -1; 72 73 /* 74 * We take all buildids when the file contains AUX area tracing data 75 * because we do not decode the trace because it would take too long. 76 */ 77 if (!perf_data__is_pipe(&data) && 78 perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 79 with_hits = false; 80 81 /* 82 * in pipe-mode, the only way to get the buildids is to parse 83 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID 84 */ 85 if (with_hits || perf_data__is_pipe(&data)) 86 perf_session__process_events(session); 87 88 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits); 89 perf_session__delete(session); 90 out: 91 return 0; 92 } 93 94 int cmd_buildid_list(int argc, const char **argv) 95 { 96 bool show_kernel = false; 97 bool with_hits = false; 98 bool force = false; 99 const struct option options[] = { 100 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"), 101 OPT_STRING('i', "input", &input_name, "file", "input file name"), 102 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), 103 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"), 104 OPT_INCR('v', "verbose", &verbose, "be more verbose"), 105 OPT_END() 106 }; 107 const char * const buildid_list_usage[] = { 108 "perf buildid-list [<options>]", 109 NULL 110 }; 111 112 argc = parse_options(argc, argv, options, buildid_list_usage, 0); 113 setup_pager(); 114 115 if (show_kernel) 116 return !(sysfs__fprintf_build_id(stdout) > 0); 117 118 return perf_session__list_build_ids(force, with_hits); 119 } 120