v4.19.13 snapshot.
diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
new file mode 100644
index 0000000..78abbe8
--- /dev/null
+++ b/tools/perf/builtin-buildid-list.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * builtin-buildid-list.c
+ *
+ * Builtin buildid-list command: list buildids in perf.data, in the running
+ * kernel and in ELF files.
+ *
+ * Copyright (C) 2009, Red Hat Inc.
+ * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
+ */
+#include "builtin.h"
+#include "perf.h"
+#include "util/build-id.h"
+#include "util/cache.h"
+#include "util/debug.h"
+#include <subcmd/parse-options.h>
+#include "util/session.h"
+#include "util/symbol.h"
+#include "util/data.h"
+#include <errno.h>
+
+static int sysfs__fprintf_build_id(FILE *fp)
+{
+ char sbuild_id[SBUILD_ID_SIZE];
+ int ret;
+
+ ret = sysfs__sprintf_build_id("/", sbuild_id);
+ if (ret != sizeof(sbuild_id))
+ return ret < 0 ? ret : -EINVAL;
+
+ return fprintf(fp, "%s\n", sbuild_id);
+}
+
+static int filename__fprintf_build_id(const char *name, FILE *fp)
+{
+ char sbuild_id[SBUILD_ID_SIZE];
+ int ret;
+
+ ret = filename__sprintf_build_id(name, sbuild_id);
+ if (ret != sizeof(sbuild_id))
+ return ret < 0 ? ret : -EINVAL;
+
+ return fprintf(fp, "%s\n", sbuild_id);
+}
+
+static bool dso__skip_buildid(struct dso *dso, int with_hits)
+{
+ return with_hits && !dso->hit;
+}
+
+static int perf_session__list_build_ids(bool force, bool with_hits)
+{
+ struct perf_session *session;
+ struct perf_data data = {
+ .file = {
+ .path = input_name,
+ },
+ .mode = PERF_DATA_MODE_READ,
+ .force = force,
+ };
+
+ symbol__elf_init();
+ /*
+ * See if this is an ELF file first:
+ */
+ if (filename__fprintf_build_id(input_name, stdout) > 0)
+ goto out;
+
+ session = perf_session__new(&data, false, &build_id__mark_dso_hit_ops);
+ if (session == NULL)
+ return -1;
+
+ /*
+ * We take all buildids when the file contains AUX area tracing data
+ * because we do not decode the trace because it would take too long.
+ */
+ if (!perf_data__is_pipe(&data) &&
+ perf_header__has_feat(&session->header, HEADER_AUXTRACE))
+ with_hits = false;
+
+ /*
+ * in pipe-mode, the only way to get the buildids is to parse
+ * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
+ */
+ if (with_hits || perf_data__is_pipe(&data))
+ perf_session__process_events(session);
+
+ perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
+ perf_session__delete(session);
+out:
+ return 0;
+}
+
+int cmd_buildid_list(int argc, const char **argv)
+{
+ bool show_kernel = false;
+ bool with_hits = false;
+ bool force = false;
+ const struct option options[] = {
+ OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
+ OPT_STRING('i', "input", &input_name, "file", "input file name"),
+ OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
+ OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
+ OPT_INCR('v', "verbose", &verbose, "be more verbose"),
+ OPT_END()
+ };
+ const char * const buildid_list_usage[] = {
+ "perf buildid-list [<options>]",
+ NULL
+ };
+
+ argc = parse_options(argc, argv, options, buildid_list_usage, 0);
+ setup_pager();
+
+ if (show_kernel)
+ return !(sysfs__fprintf_build_id(stdout) > 0);
+
+ return perf_session__list_build_ids(force, with_hits);
+}