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-rw-r--r--include/linux/mm.h6
-rw-r--r--include/linux/mm_types.h2
-rw-r--r--mm/memory.c3
3 files changed, 7 insertions, 4 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3899395..7f693b2 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 048b462..b8bb9a6 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 d1153e3..3d9130b 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
/*
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