1 files changed, 161 insertions, 0 deletions
diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
new file mode 100644
index 000000000..00bfe89f0
--- /dev/null
+++ b/tools/perf/builtin-buildid-list.c
@@ -0,0 +1,161 @@
+/*
+ * 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/debug.h"
+#include "util/dso.h"
+#include "util/map.h"
+#include <subcmd/pager.h>
+#include <subcmd/parse-options.h>
+#include "util/session.h"
+#include "util/symbol.h"
+#include "util/data.h"
+#include <errno.h>
+#include <inttypes.h>
+#include <linux/err.h>
+
+static int buildid__map_cb(struct map *map, void *arg __maybe_unused)
+{
+	const struct dso *dso = map->dso;
+	char bid_buf[SBUILD_ID_SIZE];
+
+	memset(bid_buf, 0, sizeof(bid_buf));
+	if (dso->has_build_id)
+		build_id__sprintf(&dso->bid, bid_buf);
+	printf("%s %16" PRIx64 " %16" PRIx64, bid_buf, map->start, map->end);
+	if (dso->long_name != NULL) {
+		printf(" %s", dso->long_name);
+	} else if (dso->short_name != NULL) {
+		printf(" %s", dso->short_name);
+	}
+	printf("\n");
+
+	return 0;
+}
+
+static void buildid__show_kernel_maps(void)
+{
+	struct machine *machine;
+
+	machine = machine__new_host();
+	machine__for_each_kernel_map(machine, buildid__map_cb, NULL);
+	machine__delete(machine);
+}
+
+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 = {
+		.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, &build_id__mark_dso_hit_ops);
+	if (IS_ERR(session))
+		return PTR_ERR(session);
+
+	/*
+	 * 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;
+
+	if (!perf_header__has_feat(&session->header, HEADER_BUILD_ID))
+		with_hits = true;
+
+	if (zstd_init(&(session->zstd_data), 0) < 0)
+		pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
+
+	/*
+	 * 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 show_kernel_maps = 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_BOOLEAN('m', "kernel-maps", &show_kernel_maps,
+	    "Show build id of current kernel + modules"),
+	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);
+	} else if (show_kernel_maps) {
+		buildid__show_kernel_maps();
+		return 0;
+	}
+
+	return perf_session__list_build_ids(force, with_hits);
+}