diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 1532ebd..ee93c18 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -1375,36 +1375,13 @@ int cmd_report(int argc, const char **argv)
 	if (symbol__init(&session->header.env) < 0)
 		goto error;
 
-	report.ptime_range = perf_time__range_alloc(report.time_str,
-						    &report.range_size);
-	if (!report.ptime_range) {
-		ret = -ENOMEM;
-		goto error;
-	}
-
-	if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) {
-		if (session->evlist->first_sample_time == 0 &&
-		    session->evlist->last_sample_time == 0) {
-			pr_err("HINT: no first/last sample time found in perf data.\n"
-			       "Please use latest perf binary to execute 'perf record'\n"
-			       "(if '--buildid-all' is enabled, please set '--timestamp-boundary').\n");
-			ret = -EINVAL;
+	if (report.time_str) {
+		ret = perf_time__parse_for_ranges(report.time_str, session,
+						  &report.ptime_range,
+						  &report.range_size,
+						  &report.range_num);
+		if (ret < 0)
 			goto error;
-		}
-
-		report.range_num = perf_time__percent_parse_str(
-					report.ptime_range, report.range_size,
-					report.time_str,
-					session->evlist->first_sample_time,
-					session->evlist->last_sample_time);
-
-		if (report.range_num < 0) {
-			pr_err("Invalid time string\n");
-			ret = -EINVAL;
-			goto error;
-		}
-	} else {
-		report.range_num = 1;
 	}
 
 	if (session->tevent.pevent &&
@@ -1426,7 +1403,8 @@ int cmd_report(int argc, const char **argv)
 		ret = 0;
 
 error:
-	zfree(&report.ptime_range);
+	if (report.ptime_range)
+		zfree(&report.ptime_range);
 
 	perf_session__delete(session);
 	return ret;