diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3899395a03dea678551ed6a0a365b26d03088b6d..7f693b272c4a2ceb4f675ce4477c3284fef0c2ae 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -971,7 +971,13 @@ static inline void setmax_mm_hiwater_rss(unsigned long *maxrss,
 		*maxrss = hiwater_rss;
 }
 
+#if defined(SPLIT_RSS_COUNTING)
 void sync_mm_rss(struct task_struct *task, struct mm_struct *mm);
+#else
+static inline void sync_mm_rss(struct task_struct *task, struct mm_struct *mm)
+{
+}
+#endif
 
 /*
  * A callback you can register to apply pressure to ageable caches.
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 048b46270aa5220c8c70b1cf2637b1c8402bed32..b8bb9a6a1f37b71cae90c33ff84e75d2d780226a 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -203,7 +203,7 @@ enum {
 	NR_MM_COUNTERS
 };
 
-#if USE_SPLIT_PTLOCKS
+#if USE_SPLIT_PTLOCKS && defined(CONFIG_MMU)
 #define SPLIT_RSS_COUNTING
 struct mm_rss_stat {
 	atomic_long_t count[NR_MM_COUNTERS];
diff --git a/mm/memory.c b/mm/memory.c
index d1153e37e9baff33ecc7a6ce26e99133b92b4c66..3d9130bd95d03fed593492b4dd041b768201db14 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -190,9 +190,6 @@ static void check_sync_rss_stat(struct task_struct *task)
 {
 }
 
-void sync_mm_rss(struct task_struct *task, struct mm_struct *mm)
-{
-}
 #endif
 
 /*