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-rw-r--r--include/linux/memory-tiers.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/memory-tiers.h b/include/linux/memory-tiers.h
index 49d281866dca..ce9c6bac6725 100644
--- a/include/linux/memory-tiers.h
+++ b/include/linux/memory-tiers.h
@@ -37,6 +37,14 @@ struct memory_dev_type *alloc_memory_type(int adistance);
void destroy_memory_type(struct memory_dev_type *memtype);
void init_node_memory_type(int node, struct memory_dev_type *default_type);
void clear_node_memory_type(int node, struct memory_dev_type *memtype);
+#ifdef CONFIG_MIGRATION
+int next_demotion_node(int node);
+#else
+static inline int next_demotion_node(int node)
+{
+ return NUMA_NO_NODE;
+}
+#endif
#else
@@ -63,5 +71,10 @@ static inline void clear_node_memory_type(int node, struct memory_dev_type *memt
{
}
+
+static inline int next_demotion_node(int node)
+{
+ return NUMA_NO_NODE;
+}
#endif /* CONFIG_NUMA */
#endif /* _LINUX_MEMORY_TIERS_H */