diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 80ca538b..a09927e 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -258,12 +258,39 @@
 	@set -e;                                                             \
 	$(cmd_and_fixdep), @:)
 
+ifndef CONFIG_TRIM_UNUSED_KSYMS
+
 cmd_and_fixdep =                                                             \
 	$(echo-cmd) $(cmd_$(1));                                             \
 	scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp;\
 	rm -f $(depfile);                                                    \
 	mv -f $(dot-target).tmp $(dot-target).cmd;
 
+else
+
+# Filter out exported kernel symbol names from the preprocessor output.
+# See also __KSYM_DEPS__ in include/linux/export.h.
+# We disable the depfile generation here, so as not to overwrite the existing
+# depfile while fixdep is parsing it.
+flags_nodeps = $(filter-out -Wp$(comma)-M%, $($(1)))
+ksym_dep_filter =                                                            \
+	case "$(1)" in                                                       \
+	cc_*_c) $(CPP) $(call flags_nodeps,c_flags) -D__KSYM_DEPS__ $< ;;    \
+	as_*_S) $(CPP) $(call flags_nodeps,a_flags) -D__KSYM_DEPS__ $< ;;    \
+	boot*|build*|*cpp_lds_S|dtc|host*|vdso*) : ;;                        \
+	*) echo "Don't know how to preprocess $(1)" >&2; false ;;            \
+	esac | sed -rn 's/^.*=== __KSYM_(.*) ===.*$$/KSYM_\1/p'
+
+cmd_and_fixdep =                                                             \
+	$(echo-cmd) $(cmd_$(1));                                             \
+	$(ksym_dep_filter) |                                                 \
+		scripts/basic/fixdep -e $(depfile) $@ '$(make-cmd)'          \
+			> $(dot-target).tmp;	                             \
+	rm -f $(depfile);                                                    \
+	mv -f $(dot-target).tmp $(dot-target).cmd;
+
+endif
+
 # Usage: $(call if_changed_rule,foo)
 # Will check if $(cmd_foo) or any of the prerequisites changed,
 # and if so will execute $(rule_foo).