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-rw-r--r--mm/swap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/swap.c b/mm/swap.c
index 017e72ca9bb..2ed7be39795 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -514,5 +514,7 @@ void __init swap_setup(void)
* Right now other parts of the system means that we
* _really_ don't want to cluster much more
*/
+#ifdef CONFIG_HOTPLUG_CPU
hotcpu_notifier(cpu_swap_callback, 0);
+#endif
}