diff --git a/kernel/events/core.c b/kernel/events/core.c
index 1cf24b3..8be3e34 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -391,14 +391,9 @@
 				    event->cgrp->css.cgroup);
 }
 
-static inline void perf_put_cgroup(struct perf_event *event)
-{
-	css_put(&event->cgrp->css);
-}
-
 static inline void perf_detach_cgroup(struct perf_event *event)
 {
-	perf_put_cgroup(event);
+	css_put(&event->cgrp->css);
 	event->cgrp = NULL;
 }