2 files changed, 23 insertions, 0 deletions

diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h
index ab94bc083558..f352f06fa063 100644
--- a/include/linux/delayacct.h
+++ b/include/linux/delayacct.h
@@ -39,6 +39,8 @@ extern void __delayacct_blkio_start(void);
 extern void __delayacct_blkio_end(void);
 extern int __delayacct_add_tsk(struct taskstats *, struct task_struct *);
 extern __u64 __delayacct_blkio_ticks(struct task_struct *);
+extern void __delayacct_freepages_start(void);
+extern void __delayacct_freepages_end(void);
 
 static inline int delayacct_is_task_waiting_on_io(struct task_struct *p)
 {
@@ -107,6 +109,18 @@ static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
         return 0;
 }
 
+static inline void delayacct_freepages_start(void)
+{
+        if (current->delays)
+                __delayacct_freepages_start();
+}
+
+static inline void delayacct_freepages_end(void)
+{
+        if (current->delays)
+                __delayacct_freepages_end();
+}
+
 #else
 static inline void delayacct_set_flag(int flag)
 {}
@@ -129,6 +143,11 @@ static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
 { return 0; }
 static inline int delayacct_is_task_waiting_on_io(struct task_struct *p)
 { return 0; }
+static inline void delayacct_freepages_start(void)
+{}
+static inline void delayacct_freepages_end(void)
+{}
+
 #endif /* CONFIG_TASK_DELAY_ACCT */
 
 #endif
diff --git a/include/linux/sched.h b/include/linux/sched.h
index d22ffe06d0eb..42036ffe6b00 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -672,6 +672,10 @@ struct task_delay_info {
                                 /* io operations performed */
         u32 swapin_count;       /* total count of the number of swapin block */
                                 /* io operations performed */
+
+        struct timespec freepages_start, freepages_end;
+        u64 freepages_delay;    /* wait for memory reclaim */
+        u32 freepages_count;    /* total count of memory reclaim */
 };
 #endif  /* CONFIG_TASK_DELAY_ACCT */