1 files changed, 3 insertions, 0 deletions

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index bceac647e4d1..ac78a3336181 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/writeback.h>
 #include <linux/device.h>
+#include <trace/events/writeback.h>
 
 static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0);
 
@@ -518,6 +519,7 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent,
 
         bdi_debug_register(bdi, dev_name(dev));
         set_bit(BDI_registered, &bdi->state);
+        trace_writeback_bdi_register(bdi);
 exit:
         return ret;
 }
@@ -578,6 +580,7 @@ static void bdi_prune_sb(struct backing_dev_info *bdi)
 void bdi_unregister(struct backing_dev_info *bdi)
 {
         if (bdi->dev) {
+                trace_writeback_bdi_unregister(bdi);
                 bdi_prune_sb(bdi);
 
                 if (!bdi_cap_flush_forker(bdi))