--- a/Makefile
+++ b/Makefile
-@@ -401,6 +401,11 @@ KBUILD_CFLAGS_MODULE := -DMODULE
- KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
+@@ -402,6 +402,11 @@ KBUILD_LDFLAGS_MODULE := -T $(srctree)/s
GCC_PLUGINS_CFLAGS :=
+ CLANG_FLAGS :=
+ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
+KBUILD_CFLAGS_KERNEL += $(call cc-option,-ffunction-sections,)
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
-@@ -651,11 +656,6 @@ KBUILD_CFLAGS += $(call cc-disable-warni
+@@ -652,11 +657,6 @@ KBUILD_CFLAGS += $(call cc-disable-warni
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
KBUILD_CFLAGS += $(call cc-disable-warning, attribute-alias)