--- zzzz-none-000/linux-4.9.231/fs/notify/Makefile	2020-07-22 07:10:54.000000000 +0000
+++ falcon-5590-729/linux-4.9.231/fs/notify/Makefile	2022-03-30 12:03:35.000000000 +0000
@@ -1,3 +1,6 @@
+# tell define_trace.h where to find trace-fsnotify.h
+CFLAGS_fsnotify.o := -I$(src)
+
 obj-$(CONFIG_FSNOTIFY)		+= fsnotify.o notification.o group.o inode_mark.o \
 				   mark.o vfsmount_mark.o fdinfo.o