1 files changed, 14 insertions, 0 deletions

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 98e76cad128b..4f43e724f6eb 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -16,6 +16,7 @@
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
 #include <linux/suspend.h>
+#include <linux/syscalls.h>
 
 #include "power.h"
 
@@ -51,6 +52,19 @@ void unlock_system_sleep(void)
 }
 EXPORT_SYMBOL_GPL(unlock_system_sleep);
 
+void ksys_sync_helper(void)
+{
+        ktime_t start;
+        long elapsed_msecs;
+
+        start = ktime_get();
+        ksys_sync();
+        elapsed_msecs = ktime_to_ms(ktime_sub(ktime_get(), start));
+        pr_info("Filesystems sync: %ld.%03ld seconds\n",
+                elapsed_msecs / MSEC_PER_SEC, elapsed_msecs % MSEC_PER_SEC);
+}
+EXPORT_SYMBOL_GPL(ksys_sync_helper);
+
 /* Routines for PM-transition notifications */
 
 static BLOCKING_NOTIFIER_HEAD(pm_chain_head);