diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 1adb824..23061a6 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -563,6 +563,9 @@
 		attr->branch_sample_type = opts->branch_stack;
 	}
 
+	if (opts->sample_weight)
+		attr->sample_type	|= PERF_SAMPLE_WEIGHT;
+
 	attr->mmap = track;
 	attr->comm = track;
 
@@ -1017,6 +1020,7 @@
 	data->cpu = data->pid = data->tid = -1;
 	data->stream_id = data->id = data->time = -1ULL;
 	data->period = 1;
+	data->weight = 0;
 
 	if (event->header.type != PERF_RECORD_SAMPLE) {
 		if (!evsel->attr.sample_id_all)
@@ -1167,6 +1171,12 @@
 		}
 	}
 
+	data->weight = 0;
+	if (type & PERF_SAMPLE_WEIGHT) {
+		data->weight = *array;
+		array++;
+	}
+
 	return 0;
 }