1 files changed, 22 insertions, 17 deletions

diff --git a/kernel/tools/perf/builtin-buildid-list.c b/kernel/tools/perf/builtin-buildid-list.c
index feb420f74..6419f57b0 100644
--- a/kernel/tools/perf/builtin-buildid-list.c
+++ b/kernel/tools/perf/builtin-buildid-list.c
@@ -19,29 +19,25 @@
 
 static int sysfs__fprintf_build_id(FILE *fp)
 {
-	u8 kallsyms_build_id[BUILD_ID_SIZE];
-	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+	char sbuild_id[SBUILD_ID_SIZE];
+	int ret;
 
-	if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id,
-				 sizeof(kallsyms_build_id)) != 0)
-		return -1;
+	ret = sysfs__sprintf_build_id("/", sbuild_id);
+	if (ret != sizeof(sbuild_id))
+		return ret < 0 ? ret : -EINVAL;
 
-	build_id__sprintf(kallsyms_build_id, sizeof(kallsyms_build_id),
-			  sbuild_id);
-	fprintf(fp, "%s\n", sbuild_id);
-	return 0;
+	return fprintf(fp, "%s\n", sbuild_id);
 }
 
 static int filename__fprintf_build_id(const char *name, FILE *fp)
 {
-	u8 build_id[BUILD_ID_SIZE];
-	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+	char sbuild_id[SBUILD_ID_SIZE];
+	int ret;
 
-	if (filename__read_build_id(name, build_id,
-				    sizeof(build_id)) != sizeof(build_id))
-		return 0;
+	ret = filename__sprintf_build_id(name, sbuild_id);
+	if (ret != sizeof(sbuild_id))
+		return ret < 0 ? ret : -EINVAL;
 
-	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
 	return fprintf(fp, "%s\n", sbuild_id);
 }
 
@@ -63,12 +59,21 @@ static int perf_session__list_build_ids(bool force, bool with_hits)
 	/*
 	 * See if this is an ELF file first:
 	 */
-	if (filename__fprintf_build_id(input_name, stdout))
+	if (filename__fprintf_build_id(input_name, stdout) > 0)
 		goto out;
 
 	session = perf_session__new(&file, 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_file__is_pipe(&file) &&
+	    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
@@ -105,7 +110,7 @@ int cmd_buildid_list(int argc, const char **argv,
 	setup_pager();
 
 	if (show_kernel)
-		return sysfs__fprintf_build_id(stdout);
+		return !(sysfs__fprintf_build_id(stdout) > 0);
 
 	return perf_session__list_build_ids(force, with_hits);
 }