Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Avoid 'constexpr', which is a keyword in C23

 - Allow 'dtbs_check' and 'dt_compatible_check' run independently of
   'dt_binding_check'

 - Fix weak references to avoid GOT entries in position-independent code
   generation

 - Convert the last use of 'optional' property in arch/sh/Kconfig

 - Remove support for the 'optional' property in Kconfig

 - Remove support for Clang's ThinLTO caching, which does not work with
   the .incbin directive

 - Change the semantics of $(src) so it always points to the source
   directory, which fixes Makefile inconsistencies between upstream and
   downstream

 - Fix 'make tar-pkg' for RISC-V to produce a consistent package

 - Provide reasonable default coverage for objtool, sanitizers, and
   profilers

 - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.

 - Remove the last use of tristate choice in drivers/rapidio/Kconfig

 - Various cleanups and fixes in Kconfig

* tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits)
  kconfig: use sym_get_choice_menu() in sym_check_prop()
  rapidio: remove choice for enumeration
  kconfig: lxdialog: remove initialization with A_NORMAL
  kconfig: m/nconf: merge two item_add_str() calls
  kconfig: m/nconf: remove dead code to display value of bool choice
  kconfig: m/nconf: remove dead code to display children of choice members
  kconfig: gconf: show checkbox for choice correctly
  kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal
  Makefile: remove redundant tool coverage variables
  kbuild: provide reasonable defaults for tool coverage
  modules: Drop the .export_symbol section from the final modules
  kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()
  kconfig: use sym_get_choice_menu() in conf_write_defconfig()
  kconfig: add sym_get_choice_menu() helper
  kconfig: turn defaults and additional prompt for choice members into error
  kconfig: turn missing prompt for choice members into error
  kconfig: turn conf_choice() into void function
  kconfig: use linked list in sym_set_changed()
  kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED
  kconfig: gconf: remove debug code
  ...

Documentation/Makefile

@@ -80,22 +80,22 @@ loop_cmd = $(echo-cmd) $(cmd_$(1)) || exit;
 #    * dest folder relative to $(BUILDDIR) and
 #    * cache folder relative to $(BUILDDIR)/.doctrees
 # $4 dest subfolder e.g. "man" for man pages at userspace-api/media/man
-# $5 reST source folder relative to $(srctree)/$(src),
+# $5 reST source folder relative to $(src),
 #    e.g. "userspace-api/media" for the linux-tv book-set at ./Documentation/userspace-api/media
 
 quiet_cmd_sphinx = SPHINX  $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
       cmd_sphinx = $(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media $2 && \
 	PYTHONDONTWRITEBYTECODE=1 \
-	BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \
+	BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(src)/$5/$(SPHINX_CONF)) \
 	$(PYTHON3) $(srctree)/scripts/jobserver-exec \
 	$(CONFIG_SHELL) $(srctree)/Documentation/sphinx/parallel-wrapper.sh \
 	$(SPHINXBUILD) \
 	-b $2 \
-	-c $(abspath $(srctree)/$(src)) \
+	-c $(abspath $(src)) \
 	-d $(abspath $(BUILDDIR)/.doctrees/$3) \
 	-D version=$(KERNELVERSION) -D release=$(KERNELRELEASE) \
 	$(ALLSPHINXOPTS) \
-	$(abspath $(srctree)/$(src)/$5) \
+	$(abspath $(src)/$5) \
 	$(abspath $(BUILDDIR)/$3/$4) && \
 	if [ "x$(DOCS_CSS)" != "x" ]; then \
 		cp $(if $(patsubst /%,,$(DOCS_CSS)),$(abspath $(srctree)/$(DOCS_CSS)),$(DOCS_CSS)) $(BUILDDIR)/$3/_static/; \

Documentation/devicetree/bindings/Makefile

@@ -25,23 +25,25 @@ quiet_cmd_extract_ex = DTEX    $@
 $(obj)/%.example.dts: $(src)/%.yaml check_dtschema_version FORCE
 	$(call if_changed,extract_ex)
 
-find_all_cmd = find $(srctree)/$(src) \( -name '*.yaml' ! \
+find_all_cmd = find $(src) \( -name '*.yaml' ! \
 		-name 'processed-schema*' \)
 
 find_cmd = $(find_all_cmd) | \
 		sed 's|^$(srctree)/||' | \
 		grep -F -e "$(subst :," -e ",$(DT_SCHEMA_FILES))" | \
 		sed 's|^|$(srctree)/|'
-CHK_DT_DOCS := $(shell $(find_cmd))
+CHK_DT_EXAMPLES := $(patsubst $(srctree)/%.yaml,%.example.dtb, $(shell $(find_cmd)))
 
 quiet_cmd_yamllint = LINT    $(src)
       cmd_yamllint = ($(find_cmd) | \
                      xargs -n200 -P$$(nproc) \
-		     $(DT_SCHEMA_LINT) -f parsable -c $(srctree)/$(src)/.yamllint >&2) || true
+		     $(DT_SCHEMA_LINT) -f parsable -c $(src)/.yamllint >&2) \
+		     && touch $@ || true
 
-quiet_cmd_chk_bindings = CHKDT   $@
+quiet_cmd_chk_bindings = CHKDT   $(src)
       cmd_chk_bindings = ($(find_cmd) | \
-                         xargs -n200 -P$$(nproc) $(DT_DOC_CHECKER) -u $(srctree)/$(src)) || true
+			  xargs -n200 -P$$(nproc) $(DT_DOC_CHECKER) -u $(src)) \
+			  && touch $@ || true
 
 quiet_cmd_mk_schema = SCHEMA  $@
       cmd_mk_schema = f=$$(mktemp) ; \
@@ -49,12 +51,6 @@ quiet_cmd_mk_schema = SCHEMA  $@
                       $(DT_MK_SCHEMA) -j $(DT_MK_SCHEMA_FLAGS) @$$f > $@ ; \
 		      rm -f $$f
 
-define rule_chkdt
-	$(if $(DT_SCHEMA_LINT),$(call cmd,yamllint),)
-	$(call cmd,chk_bindings)
-	$(call cmd,mk_schema)
-endef
-
 DT_DOCS = $(patsubst $(srctree)/%,%,$(shell $(find_all_cmd)))
 
 override DTC_FLAGS := \
@@ -64,12 +60,19 @@ override DTC_FLAGS := \
 	-Wno-unique_unit_address \
 	-Wunique_unit_address_if_enabled
 
-$(obj)/processed-schema.json: $(DT_DOCS) $(src)/.yamllint check_dtschema_version FORCE
-	$(call if_changed_rule,chkdt)
+$(obj)/processed-schema.json: $(DT_DOCS) check_dtschema_version FORCE
+	$(call if_changed,mk_schema)
+
+targets += .dt-binding.checked .yamllint.checked
+$(obj)/.yamllint.checked: $(DT_DOCS) $(src)/.yamllint FORCE
+	$(if $(DT_SCHEMA_LINT),$(call if_changed,yamllint),)
+
+$(obj)/.dt-binding.checked: $(DT_DOCS) FORCE
+	$(call if_changed,chk_bindings)
 
 always-y += processed-schema.json
-always-$(CHECK_DT_BINDING) += $(patsubst $(srctree)/$(src)/%.yaml,%.example.dts, $(CHK_DT_DOCS))
-always-$(CHECK_DT_BINDING) += $(patsubst $(srctree)/$(src)/%.yaml,%.example.dtb, $(CHK_DT_DOCS))
+targets += $(patsubst $(obj)/%,%, $(CHK_DT_EXAMPLES))
+targets += $(patsubst $(obj)/%.dtb,%.dts, $(CHK_DT_EXAMPLES))
 
 # Hack: avoid 'Argument list too long' error for 'make clean'. Remove most of
 # build artifacts here before they are processed by scripts/Makefile.clean
@@ -78,3 +81,6 @@ clean-files = $(shell find $(obj) \( -name '*.example.dts' -o \
 
 dt_compatible_check: $(obj)/processed-schema.json
 	$(Q)$(srctree)/scripts/dtc/dt-extract-compatibles $(srctree) | xargs dt-check-compatible -v -s $<
+
+PHONY += dt_binding_check
+dt_binding_check: $(obj)/.dt-binding.checked $(obj)/.yamllint.checked $(CHK_DT_EXAMPLES)

Documentation/kbuild/kconfig-language.rst

@@ -410,9 +410,6 @@ to be set to 'm'. This can be used if multiple drivers for a single
 hardware exists and only a single driver can be compiled/loaded into
 the kernel, but all drivers can be compiled as modules.
 
-A choice accepts another option "optional", which allows to set the
-choice to 'n' and no entry needs to be selected.
-
 comment::
 
 	"comment" <prompt>

Documentation/kbuild/makefiles.rst

@@ -346,7 +346,7 @@ ccflags-y, asflags-y and ldflags-y
   Example::
 
     #arch/cris/boot/compressed/Makefile
-    ldflags-y += -T $(srctree)/$(src)/decompress_$(arch-y).lds
+    ldflags-y += -T $(src)/decompress_$(arch-y).lds
 
 subdir-ccflags-y, subdir-asflags-y
   The two flags listed above are similar to ccflags-y and asflags-y.
@@ -426,14 +426,14 @@ path to prerequisite files and target files.
 Two variables are used when defining custom rules:
 
 $(src)
-  $(src) is a relative path which points to the directory
-  where the Makefile is located. Always use $(src) when
+  $(src) is the directory where the Makefile is located. Always use $(src) when
   referring to files located in the src tree.
 
 $(obj)
-  $(obj) is a relative path which points to the directory
-  where the target is saved. Always use $(obj) when
-  referring to generated files.
+  $(obj) is the directory where the target is saved. Always use $(obj) when
+  referring to generated files. Use $(obj) for pattern rules that need to work
+  for both generated files and real sources (VPATH will help to find the
+  prerequisites not only in the object tree but also in the source tree).
 
   Example::
 

Makefile

@@ -263,7 +263,14 @@ srctree := $(abs_srctree)
 endif
 
 objtree		:= .
+
+VPATH		:=
+
+ifeq ($(KBUILD_EXTMOD),)
+ifdef building_out_of_srctree
 VPATH		:= $(srctree)
+endif
+endif
 
 export building_out_of_srctree srctree objtree VPATH
 
@@ -942,7 +949,6 @@ endif
 ifdef CONFIG_LTO_CLANG
 ifdef CONFIG_LTO_CLANG_THIN
 CC_FLAGS_LTO	:= -flto=thin -fsplit-lto-unit
-KBUILD_LDFLAGS	+= --thinlto-cache-dir=$(extmod_prefix).thinlto-cache
 else
 CC_FLAGS_LTO	:= -flto
 endif
@@ -1248,8 +1254,8 @@ define filechk_version.h
 	echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL)
 endef
 
-$(version_h): PATCHLEVEL := $(or $(PATCHLEVEL), 0)
-$(version_h): SUBLEVEL := $(or $(SUBLEVEL), 0)
+$(version_h): private PATCHLEVEL := $(or $(PATCHLEVEL), 0)
+$(version_h): private SUBLEVEL := $(or $(SUBLEVEL), 0)
 $(version_h): FORCE
 	$(call filechk,version.h)
 
@@ -1403,7 +1409,7 @@ export CHECK_DTBS=y
 endif
 
 ifneq ($(CHECK_DTBS),)
-dtbs_prepare: dt_binding_check
+dtbs_prepare: dt_binding_schemas
 endif
 
 dtbs_check: dtbs
@@ -1422,15 +1428,18 @@ scripts_dtc: scripts_basic
 	$(Q)$(MAKE) $(build)=scripts/dtc
 
 ifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),)
-export CHECK_DT_BINDING=y
+export CHECK_DTBS=y
 endif
 
-PHONY += dt_binding_check
-dt_binding_check: scripts_dtc
+PHONY += dt_binding_check dt_binding_schemas
+dt_binding_check: dt_binding_schemas scripts_dtc
+	$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings $@
+
+dt_binding_schemas:
 	$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings
 
 PHONY += dt_compatible_check
-dt_compatible_check: dt_binding_check
+dt_compatible_check: dt_binding_schemas
 	$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings $@
 
 # ---------------------------------------------------------------------------
@@ -1477,7 +1486,7 @@ endif # CONFIG_MODULES
 # Directories & files removed with 'make clean'
 CLEAN_FILES += vmlinux.symvers modules-only.symvers \
 	       modules.builtin modules.builtin.modinfo modules.nsdeps \
-	       compile_commands.json .thinlto-cache rust/test \
+	       compile_commands.json rust/test \
 	       rust-project.json .vmlinux.objs .vmlinux.export.c
 
 # Directories & files removed with 'make mrproper'
@@ -1494,7 +1503,7 @@ MRPROPER_FILES += include/config include/generated          \
 
 # clean - Delete most, but leave enough to build external modules
 #
-clean: rm-files := $(CLEAN_FILES)
+clean: private rm-files := $(CLEAN_FILES)
 
 PHONY += archclean vmlinuxclean
 
@@ -1506,7 +1515,7 @@ clean: archclean vmlinuxclean resolve_btfids_clean
 
 # mrproper - Delete all generated files, including .config
 #
-mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
+mrproper: private rm-files := $(MRPROPER_FILES)
 mrproper-dirs      := $(addprefix _mrproper_,scripts)
 
 PHONY += $(mrproper-dirs) mrproper
@@ -1626,10 +1635,11 @@ help:
 	@echo  ''
 	@$(if $(dtstree), \
 		echo 'Devicetree:'; \
-		echo '* dtbs             - Build device tree blobs for enabled boards'; \
-		echo '  dtbs_install     - Install dtbs to $(INSTALL_DTBS_PATH)'; \
-		echo '  dt_binding_check - Validate device tree binding documents'; \
-		echo '  dtbs_check       - Validate device tree source files';\
+		echo '* dtbs               - Build device tree blobs for enabled boards'; \
+		echo '  dtbs_install       - Install dtbs to $(INSTALL_DTBS_PATH)'; \
+		echo '  dt_binding_check   - Validate device tree binding documents and examples'; \
+		echo '  dt_binding_schema  - Build processed device tree binding schemas'; \
+		echo '  dtbs_check         - Validate device tree source files';\
 		echo '')
 
 	@echo 'Userspace tools targets:'
@@ -1782,8 +1792,8 @@ compile_commands.json: $(extmod_prefix)compile_commands.json
 PHONY += compile_commands.json
 
 clean-dirs := $(KBUILD_EXTMOD)
-clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \
-	$(KBUILD_EXTMOD)/compile_commands.json $(KBUILD_EXTMOD)/.thinlto-cache
+clean: private rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \
+	$(KBUILD_EXTMOD)/compile_commands.json
 
 PHONY += prepare
 # now expand this into a simple variable to reduce the cost of shell evaluations

arch/arc/boot/dts/Makefile

@@ -10,8 +10,7 @@ obj-y   += $(builtindtb-y).dtb.o
 dtb-y := $(builtindtb-y).dtb
 
 # for CONFIG_OF_ALL_DTBS test
-dtstree	:= $(srctree)/$(src)
-dtb-	:= $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+dtb-	:= $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))
 
 # board-specific dtc flags
 DTC_FLAGS_hsdk += --pad 20

arch/arm/Kbuild

 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_FPE_NWFPE)		+= nwfpe/
 # Put arch/arm/fastfpe/ to use this.
-obj-$(CONFIG_FPE_FASTFPE)	+= $(patsubst $(srctree)/$(src)/%,%,$(wildcard $(srctree)/$(src)/fastfpe/))
+obj-$(CONFIG_FPE_FASTFPE)	+= $(patsubst $(src)/%,%,$(wildcard $(src)/fastfpe/))
 obj-$(CONFIG_VFP)		+= vfp/
 obj-$(CONFIG_XEN)		+= xen/
 obj-$(CONFIG_VDSO)		+= vdso/

arch/arm/boot/Makefile

@@ -25,8 +25,7 @@ targets := Image zImage xipImage bootpImage uImage
 
 ifeq ($(CONFIG_XIP_KERNEL),y)
 
-cmd_deflate_xip_data = $(CONFIG_SHELL) -c \
-	'$(srctree)/$(src)/deflate_xip_data.sh $< $@'
+cmd_deflate_xip_data = $(CONFIG_SHELL) -c '$(src)/deflate_xip_data.sh $< $@'
 
 ifeq ($(CONFIG_XIP_DEFLATED_DATA),y)
 quiet_cmd_mkxip = XIPZ    $@

arch/arm/boot/bootp/Makefile

@@ -5,7 +5,6 @@
 # This file is included by the global makefile so that you can add your own
 # architecture-specific flags and dependencies.
 #
-GCOV_PROFILE	:= n
 
 ifdef PHYS_OFFSET
 add_hex = $(shell printf 0x%x $$(( $(1) + $(2) )) )

arch/arm/boot/compressed/Makefile

@@ -22,13 +22,6 @@ ifeq ($(CONFIG_ARM_VIRT_EXT),y)
 OBJS		+= hyp-stub.o
 endif
 
-GCOV_PROFILE		:= n
-KASAN_SANITIZE		:= n
-
-# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
-KCOV_INSTRUMENT		:= n
-UBSAN_SANITIZE		:= n
-
 #
 # Architecture dependencies
 #

arch/arm/mach-s3c/Makefile

@@ -2,7 +2,7 @@
 #
 # Copyright 2009 Simtec Electronics
 
-include $(srctree)/$(src)/Makefile.s3c64xx
+include $(src)/Makefile.s3c64xx
 
 # Objects we always build independent of SoC choice
 

arch/arm/plat-orion/Makefile

@@ -2,7 +2,7 @@
 #
 # Makefile for the linux kernel.
 #
-ccflags-y := -I$(srctree)/$(src)/include
+ccflags-y := -I$(src)/include
 
 orion-gpio-$(CONFIG_GPIOLIB)      += gpio.o
 obj-$(CONFIG_PLAT_ORION_LEGACY)   += irq.o pcie.o time.o common.o mpp.o

arch/arm/tools/Makefile

@@ -9,7 +9,7 @@ gen := arch/$(ARCH)/include/generated
 kapi := $(gen)/asm
 uapi := $(gen)/uapi/asm
 syshdr := $(srctree)/scripts/syscallhdr.sh
-sysnr := $(srctree)/$(src)/syscallnr.sh
+sysnr := $(src)/syscallnr.sh
 systbl := $(srctree)/scripts/syscalltbl.sh
 syscall := $(src)/syscall.tbl
 

arch/arm/vdso/Makefile

@@ -33,15 +33,6 @@ else
 CFLAGS_vgettimeofday.o = -O2 -include $(c-gettimeofday-y)
 endif
 
-# Disable gcov profiling for VDSO code
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
-
-# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
-KCOV_INSTRUMENT := n
-
-KASAN_SANITIZE := n
-
 # Force dependency
 $(obj)/vdso.o : $(obj)/vdso.so
 

arch/arm64/kernel/pi/Makefile

@@ -19,12 +19,6 @@ KBUILD_CFLAGS	:= $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS))
 # disable LTO
 KBUILD_CFLAGS	:= $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS))
 
-GCOV_PROFILE	:= n
-KASAN_SANITIZE	:= n
-KCSAN_SANITIZE	:= n
-UBSAN_SANITIZE	:= n
-KCOV_INSTRUMENT	:= n
-
 hostprogs	:= relacheck
 
 quiet_cmd_piobjcopy = $(quiet_cmd_objcopy)

arch/arm64/kernel/vdso/Makefile

@@ -40,11 +40,6 @@ CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) \
 				$(RANDSTRUCT_CFLAGS) $(GCC_PLUGINS_CFLAGS) \
 				$(CC_FLAGS_LTO) $(CC_FLAGS_CFI) \
 				-Wmissing-prototypes -Wmissing-declarations
-KASAN_SANITIZE			:= n
-KCSAN_SANITIZE			:= n
-UBSAN_SANITIZE			:= n
-OBJECT_FILES_NON_STANDARD	:= y
-KCOV_INSTRUMENT			:= n
 
 CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny -fasynchronous-unwind-tables
 
@@ -52,9 +47,6 @@ ifneq ($(c-gettimeofday-y),)
   CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)
 endif
 
-# Disable gcov profiling for VDSO code
-GCOV_PROFILE := n
-
 targets += vdso.lds
 CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
 
@@ -68,7 +60,7 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
 	$(call if_changed,objcopy)
 
 # Generate VDSO offsets using helper script
-gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
+gen-vdsosym := $(src)/gen_vdso_offsets.sh
 quiet_cmd_vdsosym = VDSOSYM $@
       cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
 

arch/arm64/kernel/vdso32/Makefile

@@ -136,7 +136,7 @@ $(obj)/vdso32.so.dbg: $(obj)/vdso.so.raw $(obj)/$(munge) FORCE
 	$(call if_changed,vdsomunge)
 
 # Link rule for the .so file, .lds has to be first
-$(obj)/vdso.so.raw: $(src)/vdso.lds $(obj-vdso) FORCE
+$(obj)/vdso.so.raw: $(obj)/vdso.lds $(obj-vdso) FORCE
 	$(call if_changed,vdsold_and_vdso_check)
 
 # Compilation rules for the vDSO sources

arch/arm64/kvm/Makefile

@@ -3,7 +3,7 @@
 # Makefile for Kernel-based Virtual Machine module
 #
 
-ccflags-y += -I $(srctree)/$(src)
+ccflags-y += -I $(src)
 
 include $(srctree)/virt/kvm/Makefile.kvm
 
@@ -31,7 +31,7 @@ define rule_gen_hyp_constants
 	$(call filechk,offsets,__HYP_CONSTANTS_H__)
 endef
 
-CFLAGS_hyp-constants.o = -I $(srctree)/$(src)/hyp/include
+CFLAGS_hyp-constants.o = -I $(src)/hyp/include
 $(obj)/hyp-constants.s: $(src)/hyp/hyp-constants.c FORCE
 	$(call if_changed_dep,cc_s_c)
 

arch/arm64/kvm/hyp/Makefile

@@ -3,7 +3,7 @@
 # Makefile for Kernel-based Virtual Machine module, HYP part
 #
 
-incdir := $(srctree)/$(src)/include
+incdir := $(src)/include
 subdir-asflags-y := -I$(incdir)
 subdir-ccflags-y := -I$(incdir)
 

arch/arm64/kvm/hyp/nvhe/Makefile

@@ -97,16 +97,3 @@ KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS) $(CC_FLAGS_CFI)
 # causes a build failure. Remove profile optimization flags.
 KBUILD_CFLAGS := $(filter-out -fprofile-sample-use=% -fprofile-use=%, $(KBUILD_CFLAGS))
 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables
-
-# KVM nVHE code is run at a different exception code with a different map, so
-# compiler instrumentation that inserts callbacks or checks into the code may
-# cause crashes. Just disable it.
-GCOV_PROFILE	:= n
-KASAN_SANITIZE	:= n
-KCSAN_SANITIZE	:= n
-UBSAN_SANITIZE	:= n
-KCOV_INSTRUMENT	:= n
-
-# Skip objtool checking for this directory because nVHE code is compiled with
-# non-standard build rules.
-OBJECT_FILES_NON_STANDARD := y

arch/csky/boot/dts/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-dtstree	:= $(srctree)/$(src)
-
-dtb-y := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+dtb-y := $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))

arch/csky/kernel/vdso/Makefile

@@ -23,15 +23,11 @@ obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
 obj-y += vdso.o vdso-syms.o
 CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
 
-# Disable gcov profiling for VDSO code
-GCOV_PROFILE := n
-KCOV_INSTRUMENT := n
-
 # Force dependency
 $(obj)/vdso.o: $(obj)/vdso.so
 
 SYSCFLAGS_vdso.so.dbg = $(c_flags)
-$(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso) FORCE
+$(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) FORCE
 	$(call if_changed,vdsold)
 SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \
 	-Wl,--build-id=sha1 -Wl,--hash-style=both
@@ -57,4 +53,4 @@ quiet_cmd_vdsold = VDSOLD  $@
 # Extracts symbol offsets from the VDSO, converting them into an assembly file
 # that contains the same symbols at the same offsets.
 quiet_cmd_so2s = SO2S    $@
-      cmd_so2s = $(NM) -D $< | $(srctree)/$(src)/so2s.sh > $@
+      cmd_so2s = $(NM) -D $< | $(src)/so2s.sh > $@

arch/loongarch/kvm/Makefile

@@ -3,7 +3,7 @@
 # Makefile for LoongArch KVM support
 #
 
-ccflags-y += -I $(srctree)/$(src)
+ccflags-y += -I $(src)
 
 include $(srctree)/virt/kvm/Makefile.kvm
 

arch/loongarch/vdso/Makefile

 # SPDX-License-Identifier: GPL-2.0
 # Objects to go into the VDSO.
 
-KASAN_SANITIZE := n
-UBSAN_SANITIZE := n
-KCOV_INSTRUMENT := n
-OBJECT_FILES_NON_STANDARD := y
-
 # Include the generic Makefile to check the built vdso.
 include $(srctree)/lib/vdso/Makefile
 
@@ -39,8 +34,6 @@ ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \
 	$(filter -E%,$(KBUILD_CFLAGS)) -nostdlib -shared \
 	--hash-style=sysv --build-id -T
 
-GCOV_PROFILE := n
-
 #
 # Shared build commands.
 #
@@ -52,7 +45,7 @@ quiet_cmd_vdsoas_o_S = AS       $@
       cmd_vdsoas_o_S = $(CC) $(a_flags) -c -o $@ $<
 
 # Generate VDSO offsets using helper script
-gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
+gen-vdsosym := $(src)/gen_vdso_offsets.sh
 quiet_cmd_vdsosym = VDSOSYM $@
       cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
 

arch/mips/boot/compressed/Makefile

@@ -34,12 +34,6 @@ KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
 	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
 	-DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
 
-# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
-KCOV_INSTRUMENT		:= n
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
-KCSAN_SANITIZE			:= n
-
 # decompressor objects (linked with vmlinuz)
 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o
 

arch/mips/kernel/syscalls/Makefile

@@ -5,7 +5,7 @@ uapi := arch/$(SRCARCH)/include/generated/uapi/asm
 $(shell mkdir -p $(uapi) $(kapi))
 
 syshdr := $(srctree)/scripts/syscallhdr.sh
-sysnr := $(srctree)/$(src)/syscallnr.sh
+sysnr := $(src)/syscallnr.sh
 systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@

arch/mips/vdso/Makefile

 # SPDX-License-Identifier: GPL-2.0
 # Objects to go into the VDSO.
 
-# Sanitizer runtimes are unavailable and cannot be linked here.
- KCSAN_SANITIZE			:= n
-
 # Include the generic Makefile to check the built vdso.
 include $(srctree)/lib/vdso/Makefile
 
@@ -43,8 +40,8 @@ CFLAGS_vgettimeofday.o = -include $(c-gettimeofday-y)
 # config-n32-o32-env.c prepares the environment to build a 32bit vDSO
 # library on a 64bit kernel.
 # Note: Needs to be included before than the generic library.
-CFLAGS_vgettimeofday-o32.o = -include $(srctree)/$(src)/config-n32-o32-env.c -include $(c-gettimeofday-y)
-CFLAGS_vgettimeofday-n32.o = -include $(srctree)/$(src)/config-n32-o32-env.c -include $(c-gettimeofday-y)
+CFLAGS_vgettimeofday-o32.o = -include $(src)/config-n32-o32-env.c -include $(c-gettimeofday-y)
+CFLAGS_vgettimeofday-n32.o = -include $(src)/config-n32-o32-env.c -include $(c-gettimeofday-y)
 endif
 
 CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE)
@@ -60,10 +57,6 @@ ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \
 
 CFLAGS_REMOVE_vdso.o = $(CC_FLAGS_FTRACE)
 
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
-KCOV_INSTRUMENT := n
-
 # Check that we don't have PIC 'jalr t9' calls left
 quiet_cmd_vdso_mips_check = VDSOCHK $@
       cmd_vdso_mips_check = if $(OBJDUMP) --disassemble $@ | grep -E -h "jalr.*t9" > /dev/null; \

arch/nios2/boot/dts/Makefile

@@ -2,5 +2,4 @@
 
 obj-y := $(patsubst %.dts,%.dtb.o,$(CONFIG_NIOS2_DTB_SOURCE))
 
-dtstree		:= $(srctree)/$(src)
-dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))

arch/parisc/boot/compressed/Makefile

@@ -5,10 +5,6 @@
 # create a compressed self-extracting vmlinux image from the original vmlinux
 #
 
-KCOV_INSTRUMENT := n
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
-
 OBJECTS := head.o real2.o firmware.o misc.o piggy.o
 targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4

arch/parisc/kernel/vdso32/Makefile

@@ -26,26 +26,21 @@ $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so FORCE
 
 # Force dependency (incbin is bad)
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso32.so: $(src)/vdso32.lds $(obj-vdso32) $(obj-cvdso32) $(VDSO_LIBGCC) FORCE
+$(obj)/vdso32.so: $(obj)/vdso32.lds $(obj-vdso32) $(VDSO_LIBGCC) FORCE
 	$(call if_changed,vdso32ld)
 
 # assembly rules for the .S files
 $(obj-vdso32): %.o: %.S FORCE
 	$(call if_changed_dep,vdso32as)
 
-$(obj-cvdso32): %.o: %.c FORCE
-	$(call if_changed_dep,vdso32cc)
-
 # actual build commands
 quiet_cmd_vdso32ld = VDSO32L $@
       cmd_vdso32ld = $(CROSS32CC) $(c_flags) -Wl,-T $(filter-out FORCE, $^) -o $@
 quiet_cmd_vdso32as = VDSO32A $@
       cmd_vdso32as = $(CROSS32CC) $(a_flags) -c -o $@ $<
-quiet_cmd_vdso32cc = VDSO32C $@
-      cmd_vdso32cc = $(CROSS32CC) $(c_flags) -c -fPIC -mno-fast-indirect-calls -o $@ $<
 
 # Generate VDSO offsets using helper script
-gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
+gen-vdsosym := $(src)/gen_vdso_offsets.sh
 quiet_cmd_vdsosym = VDSOSYM $@
 	cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
 

arch/parisc/kernel/vdso64/Makefile

@@ -26,7 +26,7 @@ $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so FORCE
 
 # Force dependency (incbin is bad)
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso64.so: $(src)/vdso64.lds $(obj-vdso64) $(VDSO_LIBGCC) FORCE
+$(obj)/vdso64.so: $(obj)/vdso64.lds $(obj-vdso64) $(VDSO_LIBGCC) FORCE
 	$(call if_changed,vdso64ld)
 
 # assembly rules for the .S files
@@ -40,7 +40,7 @@ quiet_cmd_vdso64as = VDSO64A $@
       cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
 
 # Generate VDSO offsets using helper script
-gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
+gen-vdsosym := $(src)/gen_vdso_offsets.sh
 quiet_cmd_vdsosym = VDSOSYM $@
 	cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
 

arch/powerpc/boot/Makefile

@@ -218,7 +218,7 @@ $(addprefix $(obj)/,$(libfdt) $(libfdtheader)): $(obj)/%: $(srctree)/scripts/dtc
 $(obj)/empty.c:
 	$(Q)touch $@
 
-$(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds : $(obj)/%: $(srctree)/$(src)/%.S
+$(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds : $(obj)/%: $(src)/%.S
 	$(Q)cp $< $@
 
 clean-files := $(zlib-) $(zlibheader-) $(zliblinuxheader-) \
@@ -252,9 +252,9 @@ targets		+= $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a) zImage.lds
 extra-y		:= $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 		   $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
 
-dtstree		:= $(srctree)/$(src)/dts
+dtstree		:= $(src)/dts
 
-wrapper		:=$(srctree)/$(src)/wrapper
+wrapper		:= $(src)/wrapper
 wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
 			$(wrapper) FORCE
 

arch/powerpc/boot/dts/Makefile

@@ -2,5 +2,4 @@
 
 subdir-y += fsl
 
-dtstree		:= $(srctree)/$(src)
-dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))

arch/powerpc/boot/dts/fsl/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
-dtstree		:= $(srctree)/$(src)
-dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))

arch/powerpc/kernel/vdso/Makefile

@@ -47,12 +47,6 @@ obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
 targets += $(obj-vdso64) vdso64.so.dbg vgettimeofday-64.o
 obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
 
-GCOV_PROFILE := n
-KCOV_INSTRUMENT := n
-UBSAN_SANITIZE := n
-KASAN_SANITIZE := n
-KCSAN_SANITIZE := n
-
 ccflags-y := -fno-common -fno-builtin
 ldflags-y := -Wl,--hash-style=both -nostdlib -shared -z noexecstack $(CLANG_FLAGS)
 ldflags-$(CONFIG_LD_IS_LLD) += $(call cc-option,--ld-path=$(LD),-fuse-ld=lld)
@@ -74,9 +68,9 @@ targets += vdso64.lds
 CPPFLAGS_vdso64.lds += -P -C
 
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o FORCE
+$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o FORCE
 	$(call if_changed,vdso32ld_and_check)
-$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o FORCE
+$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o FORCE
 	$(call if_changed,vdso64ld_and_check)
 
 # assembly rules for the .S files
@@ -90,10 +84,10 @@ $(obj)/vgettimeofday-64.o: %-64.o: %.c FORCE
 	$(call if_changed_dep,cc_o_c)
 
 # Generate VDSO offsets using helper script
-gen-vdso32sym := $(srctree)/$(src)/gen_vdso32_offsets.sh
+gen-vdso32sym := $(src)/gen_vdso32_offsets.sh
 quiet_cmd_vdso32sym = VDSO32SYM $@
       cmd_vdso32sym = $(NM) $< | $(gen-vdso32sym) | LC_ALL=C sort > $@
-gen-vdso64sym := $(srctree)/$(src)/gen_vdso64_offsets.sh
+gen-vdso64sym := $(src)/gen_vdso64_offsets.sh
 quiet_cmd_vdso64sym = VDSO64SYM $@
       cmd_vdso64sym = $(NM) $< | $(gen-vdso64sym) | LC_ALL=C sort > $@
 
@@ -114,5 +108,3 @@ quiet_cmd_vdso64ld_and_check = VDSO64L $@
       cmd_vdso64ld_and_check = $(VDSOCC) $(ldflags-y) $(LD64FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^); $(cmd_vdso_check)
 quiet_cmd_vdso64as = VDSO64A $@
       cmd_vdso64as = $(VDSOCC) $(a_flags) $(AS64FLAGS) -c -o $@ $<
-
-OBJECT_FILES_NON_STANDARD := y

arch/powerpc/purgatory/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
-KASAN_SANITIZE := n
-KCSAN_SANITIZE := n
-
 targets += trampoline_$(BITS).o purgatory.ro
 
 # When profile-guided optimization is enabled, llvm emits two different

arch/riscv/boot/Makefile

@@ -14,8 +14,6 @@
 # Based on the ia64 and arm64 boot/Makefile.
 #
 
-KCOV_INSTRUMENT := n
-
 OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
 OBJCOPYFLAGS_loader.bin :=-O binary
 OBJCOPYFLAGS_xipImage :=-O binary -R .note -R .note.gnu.build-id -R .comment -S

arch/riscv/kernel/compat_vdso/Makefile

@@ -34,12 +34,6 @@ obj-compat_vdso := $(addprefix $(obj)/, $(obj-compat_vdso))
 obj-y += compat_vdso.o
 CPPFLAGS_compat_vdso.lds += -P -C -DCOMPAT_VDSO -U$(ARCH)
 
-# Disable profiling and instrumentation for VDSO code
-GCOV_PROFILE := n
-KCOV_INSTRUMENT := n
-KASAN_SANITIZE := n
-UBSAN_SANITIZE := n
-
 # Force dependency
 $(obj)/compat_vdso.o: $(obj)/compat_vdso.so
 
@@ -58,7 +52,7 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
 	$(call if_changed,objcopy)
 
 # Generate VDSO offsets using helper script
-gen-compat_vdsosym := $(srctree)/$(src)/gen_compat_vdso_offsets.sh
+gen-compat_vdsosym := $(src)/gen_compat_vdso_offsets.sh
 quiet_cmd_compat_vdsosym = VDSOSYM $@
 	cmd_compat_vdsosym = $(NM) $< | $(gen-compat_vdsosym) | LC_ALL=C sort > $@
 

arch/riscv/kernel/pi/Makefile

@@ -17,12 +17,6 @@ KBUILD_CFLAGS	+= -mcmodel=medany
 CFLAGS_cmdline_early.o += -D__NO_FORTIFY
 CFLAGS_lib-fdt_ro.o += -D__NO_FORTIFY
 
-GCOV_PROFILE	:= n
-KASAN_SANITIZE	:= n
-KCSAN_SANITIZE	:= n
-UBSAN_SANITIZE	:= n
-KCOV_INSTRUMENT	:= n
-
 $(obj)/%.pi.o: OBJCOPYFLAGS := --prefix-symbols=__pi_ \
 			       --remove-section=.note.gnu.property \
 			       --prefix-alloc-sections=.init.pi

arch/riscv/kernel/vdso/Makefile

@@ -39,12 +39,6 @@ endif
 CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS)
 CFLAGS_REMOVE_hwprobe.o = $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS)
 
-# Disable profiling and instrumentation for VDSO code
-GCOV_PROFILE := n
-KCOV_INSTRUMENT := n
-KASAN_SANITIZE := n
-UBSAN_SANITIZE := n
-
 # Force dependency
 $(obj)/vdso.o: $(obj)/vdso.so
 
@@ -60,7 +54,7 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
 	$(call if_changed,objcopy)
 
 # Generate VDSO offsets using helper script
-gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
+gen-vdsosym := $(src)/gen_vdso_offsets.sh
 quiet_cmd_vdsosym = VDSOSYM $@
 	cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
 

arch/riscv/kvm/Makefile

@@ -3,7 +3,7 @@
 # Makefile for RISC-V KVM support
 #
 
-ccflags-y += -I $(srctree)/$(src)
+ccflags-y += -I $(src)
 
 include $(srctree)/virt/kvm/Makefile.kvm
 

arch/riscv/purgatory/Makefile

 # SPDX-License-Identifier: GPL-2.0
-OBJECT_FILES_NON_STANDARD := y
 
 purgatory-y := purgatory.o sha256.o entry.o string.o ctype.o memcpy.o memset.o
 purgatory-y += strcmp.o strlen.o strncmp.o
@@ -47,13 +46,6 @@ LDFLAGS_purgatory.ro := -r $(PURGATORY_LDFLAGS)
 LDFLAGS_purgatory.chk := $(PURGATORY_LDFLAGS)
 targets += purgatory.ro purgatory.chk
 
-# Sanitizer, etc. runtimes are unavailable and cannot be linked here.
-GCOV_PROFILE	:= n
-KASAN_SANITIZE	:= n
-UBSAN_SANITIZE	:= n
-KCSAN_SANITIZE	:= n
-KCOV_INSTRUMENT := n
-
 # These are adjustments to the compiler flags used for objects that
 # make up the standalone purgatory.ro
 

arch/s390/kernel/syscalls/Makefile

@@ -4,8 +4,8 @@ gen	:= arch/$(ARCH)/include/generated
 kapi	:= $(gen)/asm
 uapi	:= $(gen)/uapi/asm
 
-syscall	:= $(srctree)/$(src)/syscall.tbl
-systbl	:= $(srctree)/$(src)/syscalltbl
+syscall	:= $(src)/syscall.tbl
+systbl	:= $(src)/syscalltbl
 
 gen-y := $(kapi)/syscall_table.h
 kapi-hdrs-y := $(kapi)/unistd_nr.h

arch/s390/kernel/vdso32/Makefile

 # SPDX-License-Identifier: GPL-2.0
 # List of files in the vdso
 
-KCOV_INSTRUMENT := n
-
 # Include the generic Makefile to check the built vdso.
 include $(srctree)/lib/vdso/Makefile
 obj-vdso32 = vdso_user_wrapper-32.o note-32.o
@@ -32,19 +30,13 @@ obj-y += vdso32_wrapper.o
 targets += vdso32.lds
 CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
 
-# Disable gcov profiling, ubsan and kasan for VDSO code
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
-KASAN_SANITIZE := n
-KCSAN_SANITIZE := n
-
 # Force dependency (incbin is bad)
 $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
 
 quiet_cmd_vdso_and_check = VDSO    $@
       cmd_vdso_and_check = $(cmd_ld); $(cmd_vdso_check)
 
-$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE
+$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) FORCE
 	$(call if_changed,vdso_and_check)
 
 # strip rule for the .so file
@@ -62,7 +54,7 @@ quiet_cmd_vdso32cc = VDSO32C $@
       cmd_vdso32cc = $(CC) $(c_flags) -c -o $@ $<
 
 # Generate VDSO offsets using helper script
-gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
+gen-vdsosym := $(src)/gen_vdso_offsets.sh
 quiet_cmd_vdsosym = VDSOSYM $@
 	cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
 

arch/s390/kernel/vdso64/Makefile

 # SPDX-License-Identifier: GPL-2.0
 # List of files in the vdso
 
-KCOV_INSTRUMENT := n
-
 # Include the generic Makefile to check the built vdso.
 include $(srctree)/lib/vdso/Makefile
 obj-vdso64 = vdso_user_wrapper.o note.o
@@ -37,12 +35,6 @@ obj-y += vdso64_wrapper.o
 targets += vdso64.lds
 CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
 
-# Disable gcov profiling, ubsan and kasan for VDSO code
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
-KASAN_SANITIZE := n
-KCSAN_SANITIZE := n
-
 # Force dependency (incbin is bad)
 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
 
@@ -50,7 +42,7 @@ quiet_cmd_vdso_and_check = VDSO    $@
       cmd_vdso_and_check = $(cmd_ld); $(cmd_vdso_check)
 
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) $(obj-cvdso64) FORCE
+$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj-cvdso64) FORCE
 	$(call if_changed,vdso_and_check)
 
 # strip rule for the .so file
@@ -72,7 +64,7 @@ quiet_cmd_vdso64cc = VDSO64C $@
       cmd_vdso64cc = $(CC) $(c_flags) -c -o $@ $<
 
 # Generate VDSO offsets using helper script
-gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
+gen-vdsosym := $(src)/gen_vdso_offsets.sh
 quiet_cmd_vdsosym = VDSOSYM $@
 	cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
 

arch/s390/purgatory/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
-OBJECT_FILES_NON_STANDARD := y
-
 purgatory-y := head.o purgatory.o string.o sha256.o mem.o
 
 targets += $(purgatory-y) purgatory.lds purgatory purgatory.chk purgatory.ro
@@ -15,12 +13,6 @@ CFLAGS_sha256.o := -D__DISABLE_EXPORTS -D__NO_FORTIFY
 $(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE
 	$(call if_changed_rule,as_o_S)
 
-KCOV_INSTRUMENT := n
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
-KASAN_SANITIZE := n
-KCSAN_SANITIZE := n
-
 KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes
 KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare
 KBUILD_CFLAGS += -fno-zero-initialized-in-bss -fno-builtin -ffreestanding

arch/sh/Kconfig

@@ -710,7 +710,6 @@ config ROMIMAGE_MMCIF
 
 choice
 	prompt "Kernel command line"
-	optional
 	default CMDLINE_OVERWRITE
 	help
 	  Setting this option allows the kernel command line arguments
@@ -728,6 +727,11 @@ config CMDLINE_EXTEND
 	  Given string will be concatenated with arguments passed in
 	  by a bootloader.
 
+config CMDLINE_FROM_BOOTLOADER
+	bool "Use bootloader kernel arguments"
+	help
+	  Uses the command-line options passed by the boot loader.
+
 endchoice
 
 config CMDLINE

arch/sh/boot/compressed/Makefile

@@ -11,9 +11,6 @@ OBJECTS := head_32.o misc.o piggy.o \
 targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
            vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo $(OBJECTS)
 
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
-
 #
 # IMAGE_OFFSET is the load offset of the compression loader
 #

arch/sh/configs/apsh4a3a_defconfig

@@ -15,6 +15,7 @@ CONFIG_MEMORY_START=0x0C000000
 CONFIG_FLATMEM_MANUAL=y
 CONFIG_SH_STORE_QUEUES=y
 CONFIG_SH_APSH4A3A=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_KEXEC=y
 CONFIG_PREEMPT=y

arch/sh/configs/apsh4ad0a_defconfig

@@ -42,6 +42,7 @@ CONFIG_SECCOMP=y
 CONFIG_PREEMPT=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 CONFIG_BINFMT_MISC=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_PM=y
 CONFIG_PM_DEBUG=y
 CONFIG_PM=y

arch/sh/configs/edosk7705_defconfig

@@ -19,6 +19,7 @@ CONFIG_BASE_SMALL=y
 CONFIG_CPU_SUBTYPE_SH7705=y
 CONFIG_SH_EDOSK7705=y
 CONFIG_SH_PCLK_FREQ=31250000
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_INPUT is not set
 # CONFIG_SERIO is not set

arch/sh/configs/hp6xx_defconfig

@@ -15,6 +15,7 @@ CONFIG_SH_DMA_API=y
 CONFIG_HD64461_ENABLER=y
 CONFIG_PCCARD=y
 CONFIG_PM=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_APM_EMULATION=y
 # CONFIG_STANDALONE is not set
 CONFIG_BLK_DEV_SD=y

arch/sh/configs/landisk_defconfig

@@ -15,6 +15,7 @@ CONFIG_KEXEC=y
 CONFIG_PCI=y
 CONFIG_PCCARD=y
 CONFIG_YENTA=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y

arch/sh/configs/magicpanelr2_defconfig

@@ -22,6 +22,7 @@ CONFIG_SH_PCLK_FREQ=24000000
 CONFIG_SH_DMA=y
 CONFIG_SH_DMA_API=y
 CONFIG_HEARTBEAT=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y

arch/sh/configs/rsk7264_defconfig

@@ -21,6 +21,7 @@ CONFIG_MEMORY_START=0x0c000000
 CONFIG_FLATMEM_MANUAL=y
 CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_SH_RSK=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 # CONFIG_SH_TIMER_MTU2 is not set
 CONFIG_BINFMT_FLAT=y
 CONFIG_NET=y

arch/sh/configs/rsk7269_defconfig

@@ -10,6 +10,7 @@ CONFIG_MEMORY_SIZE=0x02000000
 CONFIG_FLATMEM_MANUAL=y
 CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_SH_RSK=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 # CONFIG_SH_TIMER_MTU2 is not set
 CONFIG_SH_PCLK_FREQ=66700000
 CONFIG_BINFMT_FLAT=y

arch/sh/configs/se7619_defconfig

@@ -14,6 +14,7 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_SH_7619_SOLUTION_ENGINE=y
 CONFIG_HZ_100=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_BINFMT_FLAT=y
 CONFIG_BINFMT_ZFLAT=y
 # CONFIG_STANDALONE is not set

arch/sh/configs/se7705_defconfig

@@ -13,6 +13,7 @@ CONFIG_FLATMEM_MANUAL=y
 # CONFIG_SH_ADC is not set
 CONFIG_SH_SOLUTION_ENGINE=y
 CONFIG_HEARTBEAT=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_PREEMPT=y
 CONFIG_NET=y
 CONFIG_PACKET=y

arch/sh/configs/se7722_defconfig

@@ -17,6 +17,7 @@ CONFIG_SH_7722_SOLUTION_ENGINE=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_HEARTBEAT=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_KEXEC=y
 CONFIG_PREEMPT=y
 CONFIG_NET=y

arch/sh/configs/se7750_defconfig

@@ -15,6 +15,7 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_SH_SOLUTION_ENGINE=y
 CONFIG_SH_PCLK_FREQ=33333333
 CONFIG_HEARTBEAT=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y

arch/sh/configs/secureedge5410_defconfig

@@ -10,6 +10,7 @@ CONFIG_SH_SECUREEDGE5410=y
 CONFIG_SH_DMA=y
 CONFIG_SH_DMA_API=y
 CONFIG_PCI=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_NET=y
 CONFIG_INET=y
 # CONFIG_INET_XFRM_MODE_TRANSPORT is not set

arch/sh/configs/sh7710voipgw_defconfig

@@ -15,6 +15,7 @@ CONFIG_MEMORY_SIZE=0x00800000
 CONFIG_FLATMEM_MANUAL=y
 # CONFIG_SH_ADC is not set
 CONFIG_SH_PCLK_FREQ=32768000
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y

arch/sh/configs/sh7724_generic_defconfig

@@ -12,6 +12,7 @@ CONFIG_CPU_FREQ=y
 CONFIG_SH_CPU_FREQ=y
 CONFIG_KEXEC=y
 CONFIG_KEXEC_JUMP=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_HIBERNATION=y
 CONFIG_CPU_IDLE=y
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set

arch/sh/configs/sh7770_generic_defconfig

@@ -14,6 +14,7 @@ CONFIG_SH_CPU_FREQ=y
 CONFIG_KEXEC=y
 CONFIG_KEXEC_JUMP=y
 CONFIG_PM=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_HIBERNATION=y
 CONFIG_CPU_IDLE=y
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set

arch/sh/configs/sh7785lcr_32bit_defconfig

@@ -32,6 +32,7 @@ CONFIG_PREEMPT=y
 CONFIG_INTC_USERIMASK=y
 CONFIG_PCI=y
 CONFIG_PCI_DEBUG=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_PM=y
 CONFIG_CPU_IDLE=y
 CONFIG_NET=y

arch/sh/configs/sh7785lcr_defconfig

@@ -17,6 +17,7 @@ CONFIG_HEARTBEAT=y
 CONFIG_KEXEC=y
 CONFIG_PREEMPT=y
 CONFIG_PCI=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y

arch/sh/configs/urquell_defconfig

@@ -34,6 +34,7 @@ CONFIG_PCIEPORTBUS=y
 CONFIG_PCIEASPM_DEBUG=y
 CONFIG_PCI_DEBUG=y
 CONFIG_BINFMT_MISC=y
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
 CONFIG_PM=y
 CONFIG_CPU_IDLE=y
 CONFIG_NET=y

arch/sh/kernel/vsyscall/Makefile

@@ -19,14 +19,14 @@ vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 -Wl,--hash-style=sysv
 SYSCFLAGS_vsyscall-trapa.so	= $(vsyscall-flags)
 
 $(obj)/vsyscall-trapa.so: \
-$(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
+$(obj)/vsyscall-%.so: $(obj)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
 	$(call if_changed,syscall)
 
 # We also create a special relocatable object that should mirror the symbol
 # table and layout of the linked DSO.  With ld -R we can then refer to
 # these symbols in the kernel code rather than hand-coded addresses.
 SYSCFLAGS_vsyscall-dummy.o = -r
-$(obj)/vsyscall-dummy.o: $(src)/vsyscall.lds \
+$(obj)/vsyscall-dummy.o: $(obj)/vsyscall.lds \
 			$(obj)/vsyscall-trapa.o $(obj)/vsyscall-note.o FORCE
 	$(call if_changed,syscall)
 

arch/sparc/vdso/Makefile

@@ -2,7 +2,6 @@
 #
 # Building vDSO images for sparc.
 #
-UBSAN_SANITIZE := n
 
 # files to link into the vdso
 vobjs-y := vdso-note.o vclock_gettime.o
@@ -103,7 +102,6 @@ quiet_cmd_vdso = VDSO    $@
       cmd_vdso = $(LD) -nostdlib -o $@ \
 		       $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
 		       -T $(filter %.lds,$^) $(filter %.o,$^) && \
-		sh $(srctree)/$(src)/checkundef.sh '$(OBJDUMP)' '$@'
+		sh $(src)/checkundef.sh '$(OBJDUMP)' '$@'
 
 VDSO_LDFLAGS = -shared --hash-style=both --build-id=sha1 -Bsymbolic
-GCOV_PROFILE := n

arch/um/kernel/Makefile

@@ -47,7 +47,7 @@ $(obj)/config.c: $(src)/config.c.in $(obj)/config.tmp FORCE
 	$(call if_changed,quote2)
 
 quiet_cmd_mkcapflags = MKCAP   $@
-      cmd_mkcapflags = $(CONFIG_SHELL) $(srctree)/$(src)/../../x86/kernel/cpu/mkcapflags.sh $@ $^
+      cmd_mkcapflags = $(CONFIG_SHELL) $(src)/../../x86/kernel/cpu/mkcapflags.sh $@ $^
 
 cpufeature = $(src)/../../x86/include/asm/cpufeatures.h
 vmxfeature = $(src)/../../x86/include/asm/vmxfeatures.h

arch/x86/boot/Makefile

@@ -9,19 +9,6 @@
 # Changed by many, many contributors over the years.
 #
 
-# Sanitizer runtimes are unavailable and cannot be linked for early boot code.
-KASAN_SANITIZE			:= n
-KCSAN_SANITIZE			:= n
-KMSAN_SANITIZE			:= n
-OBJECT_FILES_NON_STANDARD	:= y
-
-# Kernel does not boot with kcov instrumentation here.
-# One of the problems observed was insertion of __sanitizer_cov_trace_pc()
-# callback into middle of per-cpu data enabling code. Thus the callback observed
-# inconsistent state and crashed. We are interested mostly in syscall coverage,
-# so boot code is not interesting anyway.
-KCOV_INSTRUMENT		:= n
-
 # If you want to preset the SVGA mode, uncomment the next line and
 # set SVGA_MODE to whatever number you want.
 # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
@@ -69,8 +56,6 @@ KBUILD_CFLAGS	:= $(REALMODE_CFLAGS) -D_SETUP
 KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
 KBUILD_CFLAGS	+= $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
 KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n
 
 $(obj)/bzImage: asflags-y  := $(SVGA_MODE)
 
@@ -129,7 +114,7 @@ targets += mtools.conf
 # genimage.sh requires bash, but it also has a bunch of other
 # external dependencies.
 quiet_cmd_genimage = GENIMAGE $3
-cmd_genimage = $(BASH) $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \
+      cmd_genimage = $(BASH) $(src)/genimage.sh $2 $3 $(obj)/bzImage \
 		$(obj)/mtools.conf '$(FDARGS)' $(FDINITRD)
 
 PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage

arch/x86/boot/compressed/Makefile

@@ -17,15 +17,6 @@
 #	(see scripts/Makefile.lib size_append)
 #	compressed vmlinux.bin.all + u32 size of vmlinux.bin.all
 
-# Sanitizer runtimes are unavailable and cannot be linked for early boot code.
-KASAN_SANITIZE			:= n
-KCSAN_SANITIZE			:= n
-KMSAN_SANITIZE			:= n
-OBJECT_FILES_NON_STANDARD	:= y
-
-# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
-KCOV_INSTRUMENT		:= n
-
 targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
 	vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 vmlinux.bin.zst
 
@@ -59,8 +50,6 @@ KBUILD_CFLAGS += -include $(srctree)/include/linux/hidden.h
 CFLAGS_sev.o += -I$(objtree)/arch/x86/lib/
 
 KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
-GCOV_PROFILE := n
-UBSAN_SANITIZE :=n
 
 KBUILD_LDFLAGS := -m elf_$(UTS_MACHINE)
 KBUILD_LDFLAGS += $(call ld-option,--no-ld-generated-unwind-info)

arch/x86/entry/vdso/Makefile

@@ -6,20 +6,6 @@
 # Include the generic Makefile to check the built vDSO:
 include $(srctree)/lib/vdso/Makefile
 
-# Sanitizer runtimes are unavailable and cannot be linked here.
-KASAN_SANITIZE			:= n
-KMSAN_SANITIZE_vclock_gettime.o := n
-KMSAN_SANITIZE_vdso32/vclock_gettime.o	:= n
-KMSAN_SANITIZE_vgetcpu.o	:= n
-KMSAN_SANITIZE_vdso32/vgetcpu.o	:= n
-
-UBSAN_SANITIZE			:= n
-KCSAN_SANITIZE			:= n
-OBJECT_FILES_NON_STANDARD	:= y
-
-# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
-KCOV_INSTRUMENT		:= n
-
 # Files to link into the vDSO:
 vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o
 vobjs32-y := vdso32/note.o vdso32/system_call.o vdso32/sigreturn.o
@@ -28,23 +14,12 @@ vobjs-$(CONFIG_X86_SGX)	+= vsgx.o
 
 # Files to link into the kernel:
 obj-y						+= vma.o extable.o
-KASAN_SANITIZE_vma.o				:= y
-UBSAN_SANITIZE_vma.o				:= y
-KCSAN_SANITIZE_vma.o				:= y
-
-OBJECT_FILES_NON_STANDARD_vma.o			:= n
-OBJECT_FILES_NON_STANDARD_extable.o		:= n
 
 # vDSO images to build:
 obj-$(CONFIG_X86_64)				+= vdso-image-64.o
 obj-$(CONFIG_X86_X32_ABI)			+= vdso-image-x32.o
 obj-$(CONFIG_COMPAT_32)				+= vdso-image-32.o vdso32-setup.o
 
-OBJECT_FILES_NON_STANDARD_vdso-image-32.o	:= n
-OBJECT_FILES_NON_STANDARD_vdso-image-x32.o	:= n
-OBJECT_FILES_NON_STANDARD_vdso-image-64.o	:= n
-OBJECT_FILES_NON_STANDARD_vdso32-setup.o	:= n
-
 vobjs := $(addprefix $(obj)/, $(vobjs-y))
 vobjs32 := $(addprefix $(obj)/, $(vobjs32-y))
 
@@ -176,11 +151,10 @@ quiet_cmd_vdso = VDSO    $@
       cmd_vdso = $(LD) -o $@ \
 		       $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
 		       -T $(filter %.lds,$^) $(filter %.o,$^) && \
-		 sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
+		 sh $(src)/checkundef.sh '$(NM)' '$@'
 
 VDSO_LDFLAGS = -shared --hash-style=both --build-id=sha1 \
 	$(call ld-option, --eh-frame-hdr) -Bsymbolic -z noexecstack
-GCOV_PROFILE := n
 
 quiet_cmd_vdso_and_check = VDSO    $@
       cmd_vdso_and_check = $(cmd_vdso); $(cmd_vdso_check)

arch/x86/kernel/Makefile

@@ -40,7 +40,7 @@ KMSAN_SANITIZE_sev.o					:= n
 KCOV_INSTRUMENT_head$(BITS).o				:= n
 KCOV_INSTRUMENT_sev.o					:= n
 
-CFLAGS_irq.o := -I $(srctree)/$(src)/../include/asm/trace
+CFLAGS_irq.o := -I $(src)/../include/asm/trace
 
 obj-y			+= head_$(BITS).o
 obj-y			+= head$(BITS).o

arch/x86/kernel/cpu/Makefile

@@ -60,7 +60,7 @@ obj-$(CONFIG_ACRN_GUEST)		+= acrn.o
 obj-$(CONFIG_DEBUG_FS)			+= debugfs.o
 
 quiet_cmd_mkcapflags = MKCAP   $@
-      cmd_mkcapflags = $(CONFIG_SHELL) $(srctree)/$(src)/mkcapflags.sh $@ $^
+      cmd_mkcapflags = $(CONFIG_SHELL) $(src)/mkcapflags.sh $@ $^
 
 cpufeature = $(src)/../../include/asm/cpufeatures.h
 vmxfeature = $(src)/../../include/asm/vmxfeatures.h

arch/x86/mm/Makefile

@@ -34,7 +34,7 @@ obj-y				+= pat/
 CFLAGS_physaddr.o		:= -fno-stack-protector
 CFLAGS_mem_encrypt_identity.o	:= -fno-stack-protector
 
-CFLAGS_fault.o := -I $(srctree)/$(src)/../include/asm/trace
+CFLAGS_fault.o := -I $(src)/../include/asm/trace
 
 obj-$(CONFIG_X86_32)		+= pgtable_32.o iomap_32.o
 

arch/x86/purgatory/Makefile

 # SPDX-License-Identifier: GPL-2.0
-OBJECT_FILES_NON_STANDARD := y
 
 purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o
 
@@ -30,14 +29,6 @@ LDFLAGS_purgatory.ro := -r $(PURGATORY_LDFLAGS)
 LDFLAGS_purgatory.chk := $(PURGATORY_LDFLAGS)
 targets += purgatory.ro purgatory.chk
 
-# Sanitizer, etc. runtimes are unavailable and cannot be linked here.
-GCOV_PROFILE	:= n
-KASAN_SANITIZE	:= n
-UBSAN_SANITIZE	:= n
-KCSAN_SANITIZE	:= n
-KMSAN_SANITIZE	:= n
-KCOV_INSTRUMENT := n
-
 # These are adjustments to the compiler flags used for objects that
 # make up the standalone purgatory.ro
 

arch/x86/realmode/rm/Makefile

@@ -7,15 +7,6 @@
 #
 #
 
-# Sanitizer runtimes are unavailable and cannot be linked here.
-KASAN_SANITIZE			:= n
-KCSAN_SANITIZE			:= n
-KMSAN_SANITIZE			:= n
-OBJECT_FILES_NON_STANDARD	:= y
-
-# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
-KCOV_INSTRUMENT		:= n
-
 always-y := realmode.bin realmode.relocs
 
 wakeup-objs	:= wakeup_asm.o wakemain.o video-mode.o
@@ -76,5 +67,3 @@ KBUILD_CFLAGS	:= $(REALMODE_CFLAGS) -D_SETUP -D_WAKEUP \
 		   -I$(srctree)/arch/x86/boot
 KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
 KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables
-GCOV_PROFILE := n
-UBSAN_SANITIZE := n

arch/x86/um/vdso/Makefile

@@ -3,12 +3,6 @@
 # Building vDSO images for x86.
 #
 
-# do not instrument on vdso because KASAN is not compatible with user mode
-KASAN_SANITIZE			:= n
-
-# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
-KCOV_INSTRUMENT                := n
-
 VDSO64-y		:= y
 
 vdso-install-$(VDSO64-y)	+= vdso.so
@@ -63,7 +57,6 @@ quiet_cmd_vdso = VDSO    $@
       cmd_vdso = $(CC) -nostdlib -o $@ \
 		       $(CC_FLAGS_LTO) $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
 		       -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \
-		 sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
+		 sh $(src)/checkundef.sh '$(NM)' '$@'
 
 VDSO_LDFLAGS = -fPIC -shared -Wl,--hash-style=sysv -z noexecstack
-GCOV_PROFILE := n

arch/xtensa/boot/dts/Makefile

@@ -10,5 +10,4 @@
 obj-$(CONFIG_OF) += $(addsuffix .dtb.o, $(CONFIG_BUILTIN_DTB_SOURCE))
 
 # for CONFIG_OF_ALL_DTBS test
-dtstree	:= $(srctree)/$(src)
-dtb-	:= $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+dtb-	:= $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))

certs/Makefile

@@ -13,7 +13,7 @@ CFLAGS_blacklist_hashes.o := -I $(obj)
 quiet_cmd_check_and_copy_blacklist_hash_list = GEN     $@
       cmd_check_and_copy_blacklist_hash_list = \
 	$(if $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST), \
-	$(AWK) -f $(srctree)/$(src)/check-blacklist-hashes.awk $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) >&2; \
+	$(AWK) -f $(src)/check-blacklist-hashes.awk $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) >&2; \
 	{ cat $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST); echo $(comma) NULL; } > $@, \
 	echo NULL > $@)
 
@@ -55,7 +55,7 @@ $(obj)/signing_key.pem: $(obj)/x509.genkey FORCE
 targets += signing_key.pem
 
 quiet_cmd_copy_x509_config = COPY    $@
-      cmd_copy_x509_config = cat $(srctree)/$(src)/default_x509.genkey > $@
+      cmd_copy_x509_config = cat $(src)/default_x509.genkey > $@
 
 # You can provide your own config file. If not present, copy the default one.
 $(obj)/x509.genkey:

drivers/Makefile

@@ -6,11 +6,6 @@
 # Rewritten to use lists instead of if-statements.
 #
 
-# Some driver Makefiles miss $(srctree)/ for include directive.
-ifdef building_out_of_srctree
-MAKEFLAGS += --include-dir=$(srctree)
-endif
-
 obj-y				+= cache/
 obj-y				+= irqchip/
 obj-y				+= bus/

drivers/crypto/intel/qat/qat_420xx/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-ccflags-y := -I $(srctree)/$(src)/../qat_common
+ccflags-y := -I $(src)/../qat_common
 obj-$(CONFIG_CRYPTO_DEV_QAT_420XX) += qat_420xx.o
 qat_420xx-objs := adf_drv.o adf_420xx_hw_data.o

drivers/crypto/intel/qat/qat_4xxx/Makefile

 # SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
-ccflags-y := -I $(srctree)/$(src)/../qat_common
+ccflags-y := -I $(src)/../qat_common
 obj-$(CONFIG_CRYPTO_DEV_QAT_4XXX) += qat_4xxx.o
 qat_4xxx-objs := adf_drv.o adf_4xxx_hw_data.o

drivers/crypto/intel/qat/qat_c3xxx/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-ccflags-y := -I $(srctree)/$(src)/../qat_common
+ccflags-y := -I $(src)/../qat_common
 obj-$(CONFIG_CRYPTO_DEV_QAT_C3XXX) += qat_c3xxx.o
 qat_c3xxx-objs := adf_drv.o adf_c3xxx_hw_data.o

drivers/crypto/intel/qat/qat_c3xxxvf/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-ccflags-y := -I $(srctree)/$(src)/../qat_common
+ccflags-y := -I $(src)/../qat_common
 obj-$(CONFIG_CRYPTO_DEV_QAT_C3XXXVF) += qat_c3xxxvf.o
 qat_c3xxxvf-objs := adf_drv.o adf_c3xxxvf_hw_data.o

drivers/crypto/intel/qat/qat_c62x/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-ccflags-y := -I $(srctree)/$(src)/../qat_common
+ccflags-y := -I $(src)/../qat_common
 obj-$(CONFIG_CRYPTO_DEV_QAT_C62X) += qat_c62x.o
 qat_c62x-objs := adf_drv.o adf_c62x_hw_data.o

drivers/crypto/intel/qat/qat_c62xvf/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-ccflags-y := -I $(srctree)/$(src)/../qat_common
+ccflags-y := -I $(src)/../qat_common
 obj-$(CONFIG_CRYPTO_DEV_QAT_C62XVF) += qat_c62xvf.o
 qat_c62xvf-objs := adf_drv.o adf_c62xvf_hw_data.o

drivers/crypto/intel/qat/qat_dh895xcc/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-ccflags-y := -I $(srctree)/$(src)/../qat_common
+ccflags-y := -I $(src)/../qat_common
 obj-$(CONFIG_CRYPTO_DEV_QAT_DH895xCC) += qat_dh895xcc.o
 qat_dh895xcc-objs := adf_drv.o adf_dh895xcc_hw_data.o

drivers/crypto/intel/qat/qat_dh895xccvf/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-ccflags-y := -I $(srctree)/$(src)/../qat_common
+ccflags-y := -I $(src)/../qat_common
 obj-$(CONFIG_CRYPTO_DEV_QAT_DH895xCCVF) += qat_dh895xccvf.o
 qat_dh895xccvf-objs := adf_drv.o adf_dh895xccvf_hw_data.o

drivers/firmware/efi/libstub/Makefile

@@ -56,17 +56,6 @@ KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_CFI), $(KBUILD_CFLAGS))
 # disable LTO
 KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS))
 
-GCOV_PROFILE			:= n
-# Sanitizer runtimes are unavailable and cannot be linked here.
-KASAN_SANITIZE			:= n
-KCSAN_SANITIZE			:= n
-KMSAN_SANITIZE			:= n
-UBSAN_SANITIZE			:= n
-OBJECT_FILES_NON_STANDARD	:= y
-
-# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
-KCOV_INSTRUMENT			:= n
-
 lib-y				:= efi-stub-helper.o gop.o secureboot.o tpm.o \
 				   file.o mem.o random.o randomalloc.o pci.o \
 				   skip_spaces.o lib-cmdline.o lib-ctype.o \

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -23,7 +23,7 @@
 # Makefile for the drm device driver.  This driver provides support for the
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
-FULL_AMD_PATH=$(srctree)/$(src)/..
+FULL_AMD_PATH=$(src)/..
 DISPLAY_FOLDER_NAME=display
 FULL_AMD_DISPLAY_PATH = $(FULL_AMD_PATH)/$(DISPLAY_FOLDER_NAME)
 

drivers/gpu/drm/arm/display/komeda/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
 ccflags-y := \
-	-I $(srctree)/$(src)/../include \
-	-I $(srctree)/$(src)
+	-I $(src)/../include \
+	-I $(src)
 
 komeda-y := \
 	komeda_drv.o \

drivers/gpu/drm/i915/Makefile

@@ -36,7 +36,7 @@ subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
 # drivers. Define I915 when building i915.
 subdir-ccflags-y += -DI915
 
-subdir-ccflags-y += -I$(srctree)/$(src)
+subdir-ccflags-y += -I$(src)
 
 # Please keep these build lists sorted!
 
@@ -430,7 +430,7 @@ no-header-test := \
 
 always-$(CONFIG_DRM_I915_WERROR) += \
 	$(patsubst %.h,%.hdrtest, $(filter-out $(no-header-test), \
-		$(shell cd $(srctree)/$(src) && find * -name '*.h')))
+		$(shell cd $(src) && find * -name '*.h')))
 
 quiet_cmd_hdrtest = HDRTEST $(patsubst %.hdrtest,%.h,$@)
       cmd_hdrtest = $(CC) $(filter-out $(CFLAGS_GCOV), $(c_flags)) -S -o /dev/null -x c /dev/null -include $<; \

drivers/gpu/drm/imagination/Makefile

 # SPDX-License-Identifier: GPL-2.0-only OR MIT
 # Copyright (c) 2023 Imagination Technologies Ltd.
 
-subdir-ccflags-y := -I$(srctree)/$(src)
+subdir-ccflags-y := -I$(src)
 
 powervr-y := \
 	pvr_ccb.o \

drivers/gpu/drm/msm/Makefile

 # SPDX-License-Identifier: GPL-2.0
-ccflags-y := -I $(srctree)/$(src)
+ccflags-y := -I $(src)
 ccflags-y += -I $(obj)/generated
-ccflags-y += -I $(srctree)/$(src)/disp/dpu1
-ccflags-$(CONFIG_DRM_MSM_DSI) += -I $(srctree)/$(src)/dsi
-ccflags-$(CONFIG_DRM_MSM_DP) += -I $(srctree)/$(src)/dp
+ccflags-y += -I $(src)/disp/dpu1
+ccflags-$(CONFIG_DRM_MSM_DSI) += -I $(src)/dsi
+ccflags-$(CONFIG_DRM_MSM_DP) += -I $(src)/dp
 
 adreno-y := \
 	adreno/adreno_device.o \
@@ -163,8 +163,8 @@ else
 endif
 
 quiet_cmd_headergen = GENHDR  $@
-      cmd_headergen = mkdir -p $(obj)/generated && $(PYTHON3) $(srctree)/$(src)/registers/gen_header.py \
-		      $(headergen-opts) --rnn $(srctree)/$(src)/registers --xml $< c-defines > $@
+      cmd_headergen = mkdir -p $(obj)/generated && $(PYTHON3) $(src)/registers/gen_header.py \
+		      $(headergen-opts) --rnn $(src)/registers --xml $< c-defines > $@
 
 $(obj)/generated/%.xml.h: $(src)/registers/adreno/%.xml \
 		$(src)/registers/adreno/adreno_common.xml \

drivers/gpu/drm/nouveau/Kbuild

-NOUVEAU_PATH ?= $(srctree)
-
 # SPDX-License-Identifier: MIT
-ccflags-y += -I $(NOUVEAU_PATH)/$(src)/include
-ccflags-y += -I $(NOUVEAU_PATH)/$(src)/include/nvkm
-ccflags-y += -I $(NOUVEAU_PATH)/$(src)/nvkm
-ccflags-y += -I $(NOUVEAU_PATH)/$(src)
+ccflags-y += -I $(src)/include
+ccflags-y += -I $(src)/include/nvkm
+ccflags-y += -I $(src)/nvkm
+ccflags-y += -I $(src)
 
 # NVKM - HW resource manager
 #- code also used by various userspace tools/tests

drivers/gpu/drm/xe/Makefile

@@ -32,7 +32,7 @@ endif
 # Enable -Werror in CI and development
 subdir-ccflags-$(CONFIG_DRM_XE_WERROR) += -Werror
 
-subdir-ccflags-y += -I$(obj) -I$(srctree)/$(src)
+subdir-ccflags-y += -I$(obj) -I$(src)
 
 # generated sources
 hostprogs := xe_gen_wa_oob
@@ -43,7 +43,7 @@ quiet_cmd_wa_oob = GEN     $(notdir $(generated_oob))
       cmd_wa_oob = mkdir -p $(@D); $^ $(generated_oob)
 
 $(obj)/generated/%_wa_oob.c $(obj)/generated/%_wa_oob.h: $(obj)/xe_gen_wa_oob \
-		 $(srctree)/$(src)/xe_wa_oob.rules
+		 $(src)/xe_wa_oob.rules
 	$(call cmd,wa_oob)
 
 uses_generated_oob := \
@@ -176,8 +176,8 @@ endif
 
 # i915 Display compat #defines and #includes
 subdir-ccflags-$(CONFIG_DRM_XE_DISPLAY) += \
-	-I$(srctree)/$(src)/display/ext \
-	-I$(srctree)/$(src)/compat-i915-headers \
+	-I$(src)/display/ext \
+	-I$(src)/compat-i915-headers \
 	-I$(srctree)/drivers/gpu/drm/i915/display/ \
 	-Ddrm_i915_gem_object=xe_bo \
 	-Ddrm_i915_private=xe_device
@@ -319,7 +319,7 @@ ifneq ($(CONFIG_DRM_XE_DISPLAY),y)
 endif
 
 always-$(CONFIG_DRM_XE_WERROR) += \
-	$(patsubst %.h,%.hdrtest, $(shell cd $(srctree)/$(src) && find * -name '*.h' $(hdrtest_find_args)))
+	$(patsubst %.h,%.hdrtest, $(shell cd $(src) && find * -name '*.h' $(hdrtest_find_args)))
 
 quiet_cmd_hdrtest = HDRTEST $(patsubst %.hdrtest,%.h,$@)
       cmd_hdrtest = $(CC) -DHDRTEST $(filter-out $(CFLAGS_GCOV), $(c_flags)) -S -o /dev/null -x c /dev/null -include $<; touch $@

drivers/hid/amd-sfh-hid/Makefile

@@ -13,4 +13,4 @@ amd_sfh-objs += sfh1_1/amd_sfh_init.o
 amd_sfh-objs += sfh1_1/amd_sfh_interface.o
 amd_sfh-objs += sfh1_1/amd_sfh_desc.o
 
-ccflags-y += -I $(srctree)/$(src)/
+ccflags-y += -I $(src)/

drivers/hid/intel-ish-hid/Makefile

@@ -24,4 +24,4 @@ intel-ishtp-hid-objs += ishtp-hid-client.o
 obj-$(CONFIG_INTEL_ISH_FIRMWARE_DOWNLOADER) += intel-ishtp-loader.o
 intel-ishtp-loader-objs += ishtp-fw-loader.o
 
-ccflags-y += -I $(srctree)/$(src)/ishtp
+ccflags-y += -I $(src)/ishtp

drivers/md/dm-vdo/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
 
-ccflags-y := -I$(srctree)/$(src) -I$(srctree)/$(src)/indexer
+ccflags-y := -I$(src) -I$(src)/indexer
 
 obj-$(CONFIG_DM_VDO) += dm-vdo.o
 

drivers/misc/lkdtm/Makefile

@@ -15,10 +15,6 @@ lkdtm-$(CONFIG_PPC_64S_HASH_MMU)	+= powerpc.o
 
 KASAN_SANITIZE_stackleak.o	:= n
 
-KASAN_SANITIZE_rodata.o			:= n
-KCSAN_SANITIZE_rodata.o			:= n
-KCOV_INSTRUMENT_rodata.o		:= n
-OBJECT_FILES_NON_STANDARD_rodata.o	:= y
 CFLAGS_REMOVE_rodata.o			+= $(CC_FLAGS_LTO) $(RETHUNK_CFLAGS) $(CC_FLAGS_CFI)
 
 OBJCOPYFLAGS :=

drivers/net/ethernet/aquantia/atlantic/Makefile

@@ -8,7 +8,7 @@
 
 obj-$(CONFIG_AQTION) += atlantic.o
 
-ccflags-y += -I$(srctree)/$(src)
+ccflags-y += -I$(src)
 
 atlantic-objs := aq_main.o \
 	aq_nic.o \

drivers/net/ethernet/chelsio/libcxgb/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-ccflags-y := -I $(srctree)/$(src)/../cxgb4
+ccflags-y := -I $(src)/../cxgb4
 
 obj-$(CONFIG_CHELSIO_LIB) += libcxgb.o
 

drivers/net/ethernet/fungible/funeth/Makefile

 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
 
-ccflags-y += -I$(srctree)/$(src)/../funcore -I$(srctree)/$(src)
+ccflags-y += -I$(src)/../funcore -I$(src)
 
 obj-$(CONFIG_FUN_ETH) += funeth.o
 

drivers/net/ethernet/hisilicon/hns3/Makefile

@@ -3,7 +3,7 @@
 # Makefile for the HISILICON network device drivers.
 #
 
-ccflags-y += -I$(srctree)/$(src)
+ccflags-y += -I$(src)
 ccflags-y += -I$(srctree)/drivers/net/ethernet/hisilicon/hns3/hns3pf
 ccflags-y += -I$(srctree)/drivers/net/ethernet/hisilicon/hns3/hns3vf
 ccflags-y += -I$(srctree)/drivers/net/ethernet/hisilicon/hns3/hns3_common

drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile

@@ -6,8 +6,8 @@
 #
 
 ccflags-y += \
-	-I $(srctree)/$(src) \
-	-I $(srctree)/$(src)/../include
+	-I $(src) \
+	-I $(src)/../include
 
 obj-$(CONFIG_BRCMFMAC) += brcmfmac.o
 brcmfmac-objs += \

drivers/net/wireless/broadcom/brcm80211/brcmfmac/bca/Makefile

@@ -3,9 +3,9 @@
 # Copyright (c) 2022 Broadcom Corporation
 
 ccflags-y += \
-	-I $(srctree)/$(src) \
-	-I $(srctree)/$(src)/.. \
-	-I $(srctree)/$(src)/../../include
+	-I $(src) \
+	-I $(src)/.. \
+	-I $(src)/../../include
 
 obj-m += brcmfmac-bca.o
 brcmfmac-bca-objs += \

drivers/net/wireless/broadcom/brcm80211/brcmfmac/cyw/Makefile

@@ -3,9 +3,9 @@
 # Copyright (c) 2022 Broadcom Corporation
 
 ccflags-y += \
-	-I $(srctree)/$(src) \
-	-I $(srctree)/$(src)/.. \
-	-I $(srctree)/$(src)/../../include
+	-I $(src) \
+	-I $(src)/.. \
+	-I $(src)/../../include
 
 obj-m += brcmfmac-cyw.o
 brcmfmac-cyw-objs += \

drivers/net/wireless/broadcom/brcm80211/brcmfmac/wcc/Makefile

@@ -3,9 +3,9 @@
 # Copyright (c) 2022 Broadcom Corporation
 
 ccflags-y += \
-	-I $(srctree)/$(src) \
-	-I $(srctree)/$(src)/.. \
-	-I $(srctree)/$(src)/../../include
+	-I $(src) \
+	-I $(src)/.. \
+	-I $(src)/../../include
 
 obj-m += brcmfmac-wcc.o
 brcmfmac-wcc-objs += \

drivers/net/wireless/broadcom/brcm80211/brcmsmac/Makefile

@@ -16,9 +16,9 @@
 # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 ccflags-y := \
-	-I $(srctree)/$(src) \
-	-I $(srctree)/$(src)/phy \
-	-I $(srctree)/$(src)/../include
+	-I $(src) \
+	-I $(src)/phy \
+	-I $(src)/../include
 
 brcmsmac-y := \
 	mac80211_if.o \

drivers/net/wireless/broadcom/brcm80211/brcmutil/Makefile

@@ -4,7 +4,7 @@
 #
 # Copyright (c) 2011 Broadcom Corporation
 #
-ccflags-y := -I $(srctree)/$(src)/../include
+ccflags-y := -I $(src)/../include
 
 obj-$(CONFIG_BRCMUTIL)	+= brcmutil.o
 brcmutil-objs	= utils.o d11.o

drivers/net/wireless/intel/iwlwifi/dvm/Makefile

@@ -11,4 +11,4 @@ iwldvm-objs		+= rxon.o devices.o
 iwldvm-$(CONFIG_IWLWIFI_LEDS) += led.o
 iwldvm-$(CONFIG_IWLWIFI_DEBUGFS) += debugfs.o
 
-ccflags-y += -I $(srctree)/$(src)/../
+ccflags-y += -I $(src)/../

drivers/net/wireless/intel/iwlwifi/mei/Makefile

@@ -5,4 +5,4 @@ iwlmei-y += net.o
 iwlmei-$(CONFIG_IWLWIFI_DEVICE_TRACING) += trace.o
 CFLAGS_trace.o := -I$(src)
 
-ccflags-y += -I $(srctree)/$(src)/../
+ccflags-y += -I $(src)/../

drivers/net/wireless/intel/iwlwifi/mvm/Makefile

@@ -16,4 +16,4 @@ iwlmvm-$(CONFIG_IWLWIFI_LEDS) += led.o
 iwlmvm-$(CONFIG_PM) += d3.o
 iwlmvm-$(CONFIG_IWLMEI) += vendor-cmd.o
 
-subdir-ccflags-y += -I $(srctree)/$(src)/../
+subdir-ccflags-y += -I $(src)/../

drivers/net/wireless/intel/iwlwifi/tests/Makefile

@@ -2,6 +2,6 @@
 
 iwlwifi-tests-y += module.o devinfo.o
 
-ccflags-y += -I$(srctree)/$(src)/../
+ccflags-y += -I$(src)/../
 
 obj-$(CONFIG_IWLWIFI_KUNIT_TESTS) += iwlwifi-tests.o

drivers/net/wireless/realtek/rtl818x/rtl8180/Makefile

@@ -3,4 +3,4 @@ rtl818x_pci-objs	:= dev.o rtl8225.o sa2400.o max2820.o grf5101.o rtl8225se.o
 
 obj-$(CONFIG_RTL8180)	+= rtl818x_pci.o
 
-ccflags-y += -I $(srctree)/$(src)/..
+ccflags-y += -I $(src)/..

drivers/net/wireless/realtek/rtl818x/rtl8187/Makefile

@@ -3,4 +3,4 @@ rtl8187-objs		:= dev.o rtl8225.o leds.o rfkill.o
 
 obj-$(CONFIG_RTL8187)	+= rtl8187.o
 
-ccflags-y += -I $(srctree)/$(src)/..
+ccflags-y += -I $(src)/..

drivers/rapidio/Kconfig

@@ -59,26 +59,13 @@ config RAPIDIO_DEBUG
 
 	  If you are unsure about this, say N here.
 
-choice
-	prompt "Enumeration method"
-	depends on RAPIDIO
-	default RAPIDIO_ENUM_BASIC
-	help
-	  There are different enumeration and discovery mechanisms offered
-	  for RapidIO subsystem. You may select single built-in method or
-	  or any number of methods to be built as modules.
-	  Selecting a built-in method disables use of loadable methods.
-
-	  If unsure, select Basic built-in.
-
 config RAPIDIO_ENUM_BASIC
-	tristate "Basic"
+	tristate "Basic Enumeration method"
+	depends on RAPIDIO
 	help
 	  This option includes basic RapidIO fabric enumeration and discovery
 	  mechanism similar to one described in RapidIO specification Annex 1.
 
-endchoice
-
 config RAPIDIO_CHMAN
 	tristate "RapidIO Channelized Messaging driver"
 	depends on RAPIDIO

drivers/scsi/aic7xxx/Makefile

@@ -55,9 +55,9 @@ aicasm-7xxx-opts-$(CONFIG_AIC7XXX_REG_PRETTY_PRINT) := \
 
 ifeq ($(CONFIG_AIC7XXX_BUILD_FIRMWARE),y)
 $(obj)/aic7xxx_seq.h: $(src)/aic7xxx.seq $(src)/aic7xxx.reg $(obj)/aicasm/aicasm
-	$(obj)/aicasm/aicasm -I$(srctree)/$(src) -r $(obj)/aic7xxx_reg.h \
+	$(obj)/aicasm/aicasm -I $(src) -r $(obj)/aic7xxx_reg.h \
 			      $(aicasm-7xxx-opts-y) -o $(obj)/aic7xxx_seq.h \
-			      $(srctree)/$(src)/aic7xxx.seq
+			      $(src)/aic7xxx.seq
 
 $(aic7xxx-gen-y): $(objtree)/$(obj)/aic7xxx_seq.h
 	@true
@@ -73,9 +73,9 @@ aicasm-79xx-opts-$(CONFIG_AIC79XX_REG_PRETTY_PRINT) := \
 
 ifeq ($(CONFIG_AIC79XX_BUILD_FIRMWARE),y)
 $(obj)/aic79xx_seq.h: $(src)/aic79xx.seq $(src)/aic79xx.reg $(obj)/aicasm/aicasm
-	$(obj)/aicasm/aicasm -I$(srctree)/$(src) -r $(obj)/aic79xx_reg.h \
+	$(obj)/aicasm/aicasm -I $(src) -r $(obj)/aic79xx_reg.h \
 			      $(aicasm-79xx-opts-y) -o $(obj)/aic79xx_seq.h \
-			      $(srctree)/$(src)/aic79xx.seq
+			      $(src)/aic79xx.seq
 
 $(aic79xx-gen-y): $(objtree)/$(obj)/aic79xx_seq.h
 	@true
@@ -83,5 +83,5 @@ else
 $(obj)/aic79xx_reg_print.c: $(src)/aic79xx_reg_print.c_shipped
 endif
 
-$(obj)/aicasm/aicasm: $(srctree)/$(src)/aicasm/*.[chyl]
-	$(MAKE) -C $(srctree)/$(src)/aicasm OUTDIR=$(shell pwd)/$(obj)/aicasm/
+$(obj)/aicasm/aicasm: $(src)/aicasm/*.[chyl]
+	$(MAKE) -C $(src)/aicasm OUTDIR=$(shell pwd)/$(obj)/aicasm/

drivers/staging/rtl8723bs/Makefile

@@ -62,4 +62,4 @@ r8723bs-y = \
 
 obj-$(CONFIG_RTL8723BS) := r8723bs.o
 
-ccflags-y += -I$(srctree)/$(src)/include -I$(srctree)/$(src)/hal
+ccflags-y += -I$(src)/include -I$(src)/hal

fs/iomap/Makefile

@@ -4,7 +4,7 @@
 # All Rights Reserved.
 #
 
-ccflags-y += -I $(srctree)/$(src)		# needed for trace events
+ccflags-y += -I $(src)		# needed for trace events
 
 obj-$(CONFIG_FS_IOMAP)		+= iomap.o
 

fs/unicode/Makefile

@@ -18,13 +18,13 @@ ifdef REGENERATE_UTF8DATA
 
 quiet_cmd_utf8data = GEN     $@
       cmd_utf8data = $< \
-		-a $(srctree)/$(src)/DerivedAge.txt \
-		-c $(srctree)/$(src)/DerivedCombiningClass.txt \
-		-p $(srctree)/$(src)/DerivedCoreProperties.txt \
-		-d $(srctree)/$(src)/UnicodeData.txt \
-		-f $(srctree)/$(src)/CaseFolding.txt \
-		-n $(srctree)/$(src)/NormalizationCorrections.txt \
-		-t $(srctree)/$(src)/NormalizationTest.txt \
+		-a $(src)/DerivedAge.txt \
+		-c $(src)/DerivedCombiningClass.txt \
+		-p $(src)/DerivedCoreProperties.txt \
+		-d $(src)/UnicodeData.txt \
+		-f $(src)/CaseFolding.txt \
+		-n $(src)/NormalizationCorrections.txt \
+		-t $(src)/NormalizationTest.txt \
 		-o $@
 
 $(obj)/utf8data.c: $(obj)/mkutf8data $(filter %.txt, $(cmd_utf8data)) FORCE

fs/xfs/Makefile

@@ -4,8 +4,8 @@
 # All Rights Reserved.
 #
 
-ccflags-y += -I $(srctree)/$(src)		# needed for trace events
-ccflags-y += -I $(srctree)/$(src)/libxfs
+ccflags-y += -I $(src)		# needed for trace events
+ccflags-y += -I $(src)/libxfs
 
 obj-$(CONFIG_XFS_FS)		+= xfs.o
 

include/asm-generic/vmlinux.lds.h

@@ -448,11 +448,30 @@
 #endif
 #endif
 
+/*
+ * Some symbol definitions will not exist yet during the first pass of the
+ * link, but are guaranteed to exist in the final link. Provide preliminary
+ * definitions that will be superseded in the final link to avoid having to
+ * rely on weak external linkage, which requires a GOT when used in position
+ * independent code.
+ */
+#define PRELIMINARY_SYMBOL_DEFINITIONS					\
+	PROVIDE(kallsyms_addresses = .);				\
+	PROVIDE(kallsyms_offsets = .);					\
+	PROVIDE(kallsyms_names = .);					\
+	PROVIDE(kallsyms_num_syms = .);					\
+	PROVIDE(kallsyms_relative_base = .);				\
+	PROVIDE(kallsyms_token_table = .);				\
+	PROVIDE(kallsyms_token_index = .);				\
+	PROVIDE(kallsyms_markers = .);					\
+	PROVIDE(kallsyms_seqs_of_names = .);
+
 /*
  * Read only Data
  */
 #define RO_DATA(align)							\
 	. = ALIGN((align));						\
+	PRELIMINARY_SYMBOL_DEFINITIONS					\
 	.rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {		\
 		__start_rodata = .;					\
 		*(.rodata) *(.rodata.*)					\

init/Makefile

@@ -52,13 +52,10 @@ CFLAGS_version.o := -include $(obj)/utsversion-tmp.h
 # Build version-timestamp.c with final UTS_VERSION
 #
 
-include/generated/utsversion.h: build-version-auto = $(shell $(srctree)/$(src)/build-version)
+include/generated/utsversion.h: build-version-auto = $(shell $(src)/build-version)
 include/generated/utsversion.h: build-timestamp-auto = $(shell LC_ALL=C date)
 include/generated/utsversion.h: FORCE
 	$(call filechk,uts_version)
 
 $(obj)/version-timestamp.o: include/generated/utsversion.h
 CFLAGS_version-timestamp.o := -include include/generated/utsversion.h
-KASAN_SANITIZE_version-timestamp.o := n
-KCSAN_SANITIZE_version-timestamp.o := n
-GCOV_PROFILE_version-timestamp.o := n

kernel/kallsyms.c

@@ -325,12 +325,6 @@ static unsigned long get_symbol_pos(unsigned long addr,
 	unsigned long symbol_start = 0, symbol_end = 0;
 	unsigned long i, low, high, mid;
 
-	/* This kernel should never had been booted. */
-	if (!IS_ENABLED(CONFIG_KALLSYMS_BASE_RELATIVE))
-		BUG_ON(!kallsyms_addresses);
-	else
-		BUG_ON(!kallsyms_offsets);
-
 	/* Do a binary search on the sorted kallsyms_addresses array. */
 	low = 0;
 	high = kallsyms_num_syms;

kernel/kallsyms_internal.h

@@ -5,27 +5,21 @@
 #include <linux/types.h>
 
 /*
- * These will be re-linked against their real values
- * during the second link stage.
+ * These will be re-linked against their real values during the second link
+ * stage. Preliminary values must be provided in the linker script using the
+ * PROVIDE() directive so that the first link stage can complete successfully.
  */
-extern const unsigned long kallsyms_addresses[] __weak;
-extern const int kallsyms_offsets[] __weak;
-extern const u8 kallsyms_names[] __weak;
+extern const unsigned long kallsyms_addresses[];
+extern const int kallsyms_offsets[];
+extern const u8 kallsyms_names[];
 
-/*
- * Tell the compiler that the count isn't in the small data section if the arch
- * has one (eg: FRV).
- */
-extern const unsigned int kallsyms_num_syms
-__section(".rodata") __attribute__((weak));
-
-extern const unsigned long kallsyms_relative_base
-__section(".rodata") __attribute__((weak));
+extern const unsigned int kallsyms_num_syms;
+extern const unsigned long kallsyms_relative_base;
 
-extern const char kallsyms_token_table[] __weak;
-extern const u16 kallsyms_token_index[] __weak;
+extern const char kallsyms_token_table[];
+extern const u16 kallsyms_token_index[];
 
-extern const unsigned int kallsyms_markers[] __weak;
-extern const u8 kallsyms_seqs_of_names[] __weak;
+extern const unsigned int kallsyms_markers[];
+extern const u8 kallsyms_seqs_of_names[];
 
 #endif // LINUX_KALLSYMS_INTERNAL_H_

kernel/ksysfs.c

@@ -228,8 +228,8 @@ KERNEL_ATTR_RW(rcu_normal);
 /*
  * Make /sys/kernel/notes give the raw contents of our kernel .notes section.
  */
-extern const void __start_notes __weak;
-extern const void __stop_notes __weak;
+extern const void __start_notes;
+extern const void __stop_notes;
 #define	notes_size (&__stop_notes - &__start_notes)
 
 static ssize_t notes_read(struct file *filp, struct kobject *kobj,

lib/Makefile

@@ -353,7 +353,7 @@ $(obj)/oid_registry_data.c: $(srctree)/include/linux/oid_registry.h \
 	$(call cmd,build_OID_registry)
 
 quiet_cmd_build_OID_registry = GEN     $@
-      cmd_build_OID_registry = perl $(srctree)/$(src)/build_OID_registry $< $@
+      cmd_build_OID_registry = perl $(src)/build_OID_registry $< $@
 
 clean-files	+= oid_registry_data.c
 
@@ -411,8 +411,8 @@ obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o
 obj-$(CONFIG_FIRMWARE_TABLE) += fw_table.o
 
 # FORTIFY_SOURCE compile-time behavior tests
-TEST_FORTIFY_SRCS = $(wildcard $(srctree)/$(src)/test_fortify/*-*.c)
-TEST_FORTIFY_LOGS = $(patsubst $(srctree)/$(src)/%.c, %.log, $(TEST_FORTIFY_SRCS))
+TEST_FORTIFY_SRCS = $(wildcard $(src)/test_fortify/*-*.c)
+TEST_FORTIFY_LOGS = $(patsubst $(src)/%.c, %.log, $(TEST_FORTIFY_SRCS))
 TEST_FORTIFY_LOG = test_fortify.log
 
 quiet_cmd_test_fortify = TEST    $@

lib/buildid.c

@@ -182,8 +182,8 @@ unsigned char vmlinux_build_id[BUILD_ID_SIZE_MAX] __ro_after_init;
  */
 void __init init_vmlinux_build_id(void)
 {
-	extern const void __start_notes __weak;
-	extern const void __stop_notes __weak;
+	extern const void __start_notes;
+	extern const void __stop_notes;
 	unsigned int size = &__stop_notes - &__start_notes;
 
 	build_id_parse_buf(&__start_notes, vmlinux_build_id, size);

lib/raid6/Makefile

@@ -53,7 +53,7 @@ endif
 endif
 
 quiet_cmd_unroll = UNROLL  $@
-      cmd_unroll = $(AWK) -v N=$* -f $(srctree)/$(src)/unroll.awk < $< > $@
+      cmd_unroll = $(AWK) -v N=$* -f $(src)/unroll.awk < $< > $@
 
 targets += int1.c int2.c int4.c int8.c
 $(obj)/int%.c: $(src)/int.uc $(src)/unroll.awk FORCE

net/wireless/Makefile

@@ -25,7 +25,7 @@ ifneq ($(CONFIG_CFG80211_EXTRA_REGDB_KEYDIR),)
 cfg80211-y += extra-certs.o
 endif
 
-$(obj)/shipped-certs.c: $(sort $(wildcard $(srctree)/$(src)/certs/*.hex))
+$(obj)/shipped-certs.c: $(sort $(wildcard $(src)/certs/*.hex))
 	@$(kecho) "  GEN     $@"
 	$(Q)(echo '#include "reg.h"'; \
 	  echo 'const u8 shipped_regdb_certs[] = {'; \

rust/Makefile

@@ -329,7 +329,7 @@ quiet_cmd_bindgen = BINDGEN $@
 		$(bindgen_target_cflags) $(bindgen_target_extra)
 
 $(obj)/bindings/bindings_generated.rs: private bindgen_target_flags = \
-    $(shell grep -Ev '^#|^$$' $(srctree)/$(src)/bindgen_parameters)
+    $(shell grep -Ev '^#|^$$' $(src)/bindgen_parameters)
 $(obj)/bindings/bindings_generated.rs: private bindgen_target_extra = ; \
     sed -Ei 's/pub const RUST_CONST_HELPER_([a-zA-Z0-9_]*)/pub const \1/g' $@
 $(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \
@@ -337,7 +337,7 @@ $(obj)/bindings/bindings_generated.rs: $(src)/bindings/bindings_helper.h \
 	$(call if_changed_dep,bindgen)
 
 $(obj)/uapi/uapi_generated.rs: private bindgen_target_flags = \
-    $(shell grep -Ev '^#|^$$' $(srctree)/$(src)/bindgen_parameters)
+    $(shell grep -Ev '^#|^$$' $(src)/bindgen_parameters)
 $(obj)/uapi/uapi_generated.rs: $(src)/uapi/uapi_helper.h \
     $(src)/bindgen_parameters FORCE
 	$(call if_changed_dep,bindgen)

samples/bpf/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
-BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src))
+BPF_SAMPLES_PATH ?= $(abspath $(src))
 TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools
 
 pound := \#

samples/hid/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
-HID_SAMPLES_PATH ?= $(abspath $(srctree)/$(src))
+HID_SAMPLES_PATH ?= $(abspath $(src))
 TOOLS_PATH := $(HID_SAMPLES_PATH)/../../tools
 
 pound := \#

scripts/Kbuild.include

@@ -62,8 +62,7 @@ stringify = $(squote)$(quote)$1$(quote)$(squote)
 
 ###
 # The path to Kbuild or Makefile. Kbuild has precedence over Makefile.
-kbuild-dir = $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
-kbuild-file = $(or $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Makefile)
+kbuild-file = $(or $(wildcard $(src)/Kbuild),$(src)/Makefile)
 
 ###
 # Read a file, replacing newlines with spaces

scripts/Makefile.asm-generic

@@ -9,7 +9,7 @@
 PHONY := all
 all:
 
-src := $(subst /generated,,$(obj))
+src := $(srctree)/$(subst /generated,,$(obj))
 
 include $(srctree)/scripts/Kbuild.include
 -include $(kbuild-file)
@@ -20,14 +20,14 @@ include $(srctree)/$(generic)/Kbuild
 endif
 
 redundant := $(filter $(mandatory-y) $(generated-y), $(generic-y))
-redundant += $(foreach f, $(generic-y), $(if $(wildcard $(srctree)/$(src)/$(f)),$(f)))
+redundant += $(foreach f, $(generic-y), $(if $(wildcard $(src)/$(f)),$(f)))
 redundant := $(sort $(redundant))
 $(if $(redundant),\
 	$(warning redundant generic-y found in $(src)/Kbuild: $(redundant)))
 
 # If arch does not implement mandatory headers, fallback to asm-generic ones.
 mandatory-y := $(filter-out $(generated-y), $(mandatory-y))
-generic-y   += $(foreach f, $(mandatory-y), $(if $(wildcard $(srctree)/$(src)/$(f)),,$(f)))
+generic-y   += $(foreach f, $(mandatory-y), $(if $(wildcard $(src)/$(f)),,$(f)))
 
 generic-y   := $(addprefix $(obj)/, $(generic-y))
 generated-y := $(addprefix $(obj)/, $(generated-y))

scripts/Makefile.build

@@ -3,7 +3,7 @@
 # Building
 # ==========================================================================
 
-src := $(obj)
+src := $(if $(VPATH),$(VPATH)/)$(obj)
 
 PHONY := $(obj)/
 $(obj)/:
@@ -113,13 +113,13 @@ endif
 quiet_cmd_cc_s_c = CC $(quiet_modtag)  $@
       cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS) $(CC_FLAGS_LTO), $(c_flags)) -fverbose-asm -S -o $@ $<
 
-$(obj)/%.s: $(src)/%.c FORCE
+$(obj)/%.s: $(obj)/%.c FORCE
 	$(call if_changed_dep,cc_s_c)
 
 quiet_cmd_cpp_i_c = CPP $(quiet_modtag) $@
 cmd_cpp_i_c       = $(CPP) $(c_flags) -o $@ $<
 
-$(obj)/%.i: $(src)/%.c FORCE
+$(obj)/%.i: $(obj)/%.c FORCE
 	$(call if_changed_dep,cpp_i_c)
 
 genksyms = scripts/genksyms/genksyms		\
@@ -133,7 +133,7 @@ cmd_gensymtypes_c = $(CPP) -D__GENKSYMS__ $(c_flags) $< | $(genksyms)
 quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
       cmd_cc_symtypes_c = $(call cmd_gensymtypes_c,true,$@) >/dev/null
 
-$(obj)/%.symtypes : $(src)/%.c FORCE
+$(obj)/%.symtypes : $(obj)/%.c FORCE
 	$(call cmd,cc_symtypes_c)
 
 # LLVM assembly
@@ -141,7 +141,7 @@ $(obj)/%.symtypes : $(src)/%.c FORCE
 quiet_cmd_cc_ll_c = CC $(quiet_modtag)  $@
       cmd_cc_ll_c = $(CC) $(c_flags) -emit-llvm -S -fno-discard-value-names -o $@ $<
 
-$(obj)/%.ll: $(src)/%.c FORCE
+$(obj)/%.ll: $(obj)/%.c FORCE
 	$(call if_changed_dep,cc_ll_c)
 
 # C (.c) files
@@ -214,9 +214,9 @@ endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
 # 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
 # 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file
 
-is-standard-object = $(if $(filter-out y%, $(OBJECT_FILES_NON_STANDARD_$(target-stem).o)$(OBJECT_FILES_NON_STANDARD)n),y)
+is-standard-object = $(if $(filter-out y%, $(OBJECT_FILES_NON_STANDARD_$(target-stem).o)$(OBJECT_FILES_NON_STANDARD)n),$(is-kernel-object))
 
-$(obj)/%.o: objtool-enabled = $(if $(is-standard-object),$(if $(delay-objtool),$(is-single-obj-m),y))
+$(obj)/%.o: private objtool-enabled = $(if $(is-standard-object),$(if $(delay-objtool),$(is-single-obj-m),y))
 
 ifneq ($(findstring 1, $(KBUILD_EXTRA_WARN)),)
 cmd_warn_shared_object = $(if $(word 2, $(modname-multi)),$(warning $(kbuild-file): $*.o is added to multiple modules: $(modname-multi)))
@@ -240,7 +240,7 @@ define rule_as_o_S
 endef
 
 # Built-in and composite module parts
-$(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
+$(obj)/%.o: $(obj)/%.c $(recordmcount_source) FORCE
 	$(call if_changed_rule,cc_o_c)
 	$(call cmd,force_checksrc)
 
@@ -257,7 +257,7 @@ quiet_cmd_cc_lst_c = MKLST   $@
 		     $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \
 				     System.map $(OBJDUMP) > $@
 
-$(obj)/%.lst: $(src)/%.c FORCE
+$(obj)/%.lst: $(obj)/%.c FORCE
 	$(call if_changed_dep,cc_lst_c)
 
 # Compile Rust sources (.rs)
@@ -290,7 +290,7 @@ rust_common_cmd = \
 quiet_cmd_rustc_o_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
       cmd_rustc_o_rs = $(rust_common_cmd) --emit=obj=$@ $<
 
-$(obj)/%.o: $(src)/%.rs FORCE
+$(obj)/%.o: $(obj)/%.rs FORCE
 	+$(call if_changed_dep,rustc_o_rs)
 
 quiet_cmd_rustc_rsi_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
@@ -298,19 +298,19 @@ quiet_cmd_rustc_rsi_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
 	$(rust_common_cmd) -Zunpretty=expanded $< >$@; \
 	command -v $(RUSTFMT) >/dev/null && $(RUSTFMT) $@
 
-$(obj)/%.rsi: $(src)/%.rs FORCE
+$(obj)/%.rsi: $(obj)/%.rs FORCE
 	+$(call if_changed_dep,rustc_rsi_rs)
 
 quiet_cmd_rustc_s_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
       cmd_rustc_s_rs = $(rust_common_cmd) --emit=asm=$@ $<
 
-$(obj)/%.s: $(src)/%.rs FORCE
+$(obj)/%.s: $(obj)/%.rs FORCE
 	+$(call if_changed_dep,rustc_s_rs)
 
 quiet_cmd_rustc_ll_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
       cmd_rustc_ll_rs = $(rust_common_cmd) --emit=llvm-ir=$@ $<
 
-$(obj)/%.ll: $(src)/%.rs FORCE
+$(obj)/%.ll: $(obj)/%.rs FORCE
 	+$(call if_changed_dep,rustc_ll_rs)
 
 # Compile assembler sources (.S)
@@ -336,14 +336,14 @@ cmd_gensymtypes_S =                                                         \
 quiet_cmd_cc_symtypes_S = SYM $(quiet_modtag) $@
       cmd_cc_symtypes_S = $(call cmd_gensymtypes_S,true,$@) >/dev/null
 
-$(obj)/%.symtypes : $(src)/%.S FORCE
+$(obj)/%.symtypes : $(obj)/%.S FORCE
 	$(call cmd,cc_symtypes_S)
 
 
 quiet_cmd_cpp_s_S = CPP $(quiet_modtag) $@
 cmd_cpp_s_S       = $(CPP) $(a_flags) -o $@ $<
 
-$(obj)/%.s: $(src)/%.S FORCE
+$(obj)/%.s: $(obj)/%.S FORCE
 	$(call if_changed_dep,cpp_s_S)
 
 quiet_cmd_as_o_S = AS $(quiet_modtag)  $@
@@ -358,7 +358,7 @@ cmd_gen_symversions_S = $(call gen_symversions,S)
 
 endif
 
-$(obj)/%.o: $(src)/%.S FORCE
+$(obj)/%.o: $(obj)/%.S FORCE
 	$(call if_changed_rule,as_o_S)
 
 targets += $(filter-out $(subdir-builtin), $(real-obj-y))
@@ -437,8 +437,8 @@ define rule_ld_multi_m
 	$(call cmd,gen_objtooldep)
 endef
 
-$(multi-obj-m): objtool-enabled := $(delay-objtool)
-$(multi-obj-m): part-of-module := y
+$(multi-obj-m): private objtool-enabled := $(delay-objtool)
+$(multi-obj-m): private part-of-module := y
 $(multi-obj-m): %.o: %.mod FORCE
 	$(call if_changed_rule,ld_multi_m)
 $(call multi_depend, $(multi-obj-m), .o, -objs -y -m)

scripts/Makefile.clean

@@ -3,7 +3,7 @@
 # Cleaning up
 # ==========================================================================
 
-src := $(obj)
+src := $(if $(VPATH),$(VPATH)/)$(obj)
 
 PHONY := __clean
 __clean:

scripts/Makefile.host

@@ -112,7 +112,7 @@ endif
 quiet_cmd_host-csingle 	= HOSTCC  $@
       cmd_host-csingle	= $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
 		$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
-$(host-csingle): $(obj)/%: $(src)/%.c FORCE
+$(host-csingle): $(obj)/%: $(obj)/%.c FORCE
 	$(call if_changed_dep,host-csingle)
 
 # Link an executable based on list of .o files, all plain c
@@ -129,7 +129,7 @@ $(call multi_depend, $(host-cmulti), , -objs)
 # host-cobjs -> .o
 quiet_cmd_host-cobjs	= HOSTCC  $@
       cmd_host-cobjs	= $(HOSTCC) $(hostc_flags) -c -o $@ $<
-$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
+$(host-cobjs): $(obj)/%.o: $(obj)/%.c FORCE
 	$(call if_changed_dep,host-cobjs)
 
 # Link an executable based on list of .o files, a mixture of .c and .cc

scripts/Makefile.lib

@@ -154,7 +154,7 @@ _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds)
 #
 ifeq ($(CONFIG_GCOV_KERNEL),y)
 _c_flags += $(if $(patsubst n%,, \
-		$(GCOV_PROFILE_$(target-stem).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
+		$(GCOV_PROFILE_$(target-stem).o)$(GCOV_PROFILE)$(if $(is-kernel-object),$(CONFIG_GCOV_PROFILE_ALL))), \
 		$(CFLAGS_GCOV))
 endif
 
@@ -165,32 +165,32 @@ endif
 ifeq ($(CONFIG_KASAN),y)
 ifneq ($(CONFIG_KASAN_HW_TAGS),y)
 _c_flags += $(if $(patsubst n%,, \
-		$(KASAN_SANITIZE_$(target-stem).o)$(KASAN_SANITIZE)y), \
+		$(KASAN_SANITIZE_$(target-stem).o)$(KASAN_SANITIZE)$(is-kernel-object)), \
 		$(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE))
 endif
 endif
 
 ifeq ($(CONFIG_KMSAN),y)
 _c_flags += $(if $(patsubst n%,, \
-		$(KMSAN_SANITIZE_$(target-stem).o)$(KMSAN_SANITIZE)y), \
+		$(KMSAN_SANITIZE_$(target-stem).o)$(KMSAN_SANITIZE)$(is-kernel-object)), \
 		$(CFLAGS_KMSAN))
 _c_flags += $(if $(patsubst n%,, \
-		$(KMSAN_ENABLE_CHECKS_$(target-stem).o)$(KMSAN_ENABLE_CHECKS)y), \
+		$(KMSAN_ENABLE_CHECKS_$(target-stem).o)$(KMSAN_ENABLE_CHECKS)$(is-kernel-object)), \
 		, -mllvm -msan-disable-checks=1)
 endif
 
 ifeq ($(CONFIG_UBSAN),y)
 _c_flags += $(if $(patsubst n%,, \
-		$(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SANITIZE)y), \
+		$(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SANITIZE)$(is-kernel-object)), \
 		$(CFLAGS_UBSAN))
 _c_flags += $(if $(patsubst n%,, \
-		$(UBSAN_SIGNED_WRAP_$(target-stem).o)$(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SIGNED_WRAP)$(UBSAN_SANITIZE)y), \
+		$(UBSAN_SIGNED_WRAP_$(target-stem).o)$(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SIGNED_WRAP)$(UBSAN_SANITIZE)$(is-kernel-object)), \
 		$(CFLAGS_UBSAN_SIGNED_WRAP))
 endif
 
 ifeq ($(CONFIG_KCOV),y)
 _c_flags += $(if $(patsubst n%,, \
-	$(KCOV_INSTRUMENT_$(target-stem).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \
+	$(KCOV_INSTRUMENT_$(target-stem).o)$(KCOV_INSTRUMENT)$(if $(is-kernel-object),$(CONFIG_KCOV_INSTRUMENT_ALL))), \
 	$(CFLAGS_KCOV))
 endif
 
@@ -200,7 +200,7 @@ endif
 #
 ifeq ($(CONFIG_KCSAN),y)
 _c_flags += $(if $(patsubst n%,, \
-	$(KCSAN_SANITIZE_$(target-stem).o)$(KCSAN_SANITIZE)y), \
+	$(KCSAN_SANITIZE_$(target-stem).o)$(KCSAN_SANITIZE)$(is-kernel-object)), \
 	$(CFLAGS_KCSAN))
 # Some uninstrumented files provide implied barriers required to avoid false
 # positives: set KCSAN_INSTRUMENT_BARRIERS for barrier instrumentation only.
@@ -209,16 +209,20 @@ _c_flags += $(if $(patsubst n%,, \
 	-D__KCSAN_INSTRUMENT_BARRIERS__)
 endif
 
-# $(srctree)/$(src) for including checkin headers from generated source files
-# $(objtree)/$(obj) for including generated headers from checkin source files
+# $(src) for including checkin headers from generated source files
+# $(obj) for including generated headers from checkin source files
 ifeq ($(KBUILD_EXTMOD),)
 ifdef building_out_of_srctree
-_c_flags   += -I $(srctree)/$(src) -I $(objtree)/$(obj)
-_a_flags   += -I $(srctree)/$(src) -I $(objtree)/$(obj)
-_cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
+_c_flags   += $(addprefix -I, $(src) $(obj))
+_a_flags   += $(addprefix -I, $(src) $(obj))
+_cpp_flags += $(addprefix -I, $(src) $(obj))
 endif
 endif
 
+# If $(is-kernel-object) is 'y', this object will be linked to vmlinux or modules
+is-kernel-object = $(or $(part-of-builtin),$(part-of-module))
+
+part-of-builtin = $(if $(filter $(basename $@).o, $(real-obj-y) $(lib-y)),y)
 part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y)
 quiet_modtag = $(if $(part-of-module),[M],   )
 
@@ -410,7 +414,7 @@ $(multi-dtb-y): FORCE
 	$(call if_changed,fdtoverlay)
 $(call multi_depend, $(multi-dtb-y), .dtb, -dtbs)
 
-ifneq ($(CHECK_DTBS)$(CHECK_DT_BINDING),)
+ifneq ($(CHECK_DTBS),)
 DT_CHECKER ?= dt-validate
 DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m)
 DT_BINDING_DIR := Documentation/devicetree/bindings
@@ -423,7 +427,7 @@ quiet_cmd_dtb = $(quiet_cmd_dtc)
       cmd_dtb = $(cmd_dtc)
 endif
 
-$(obj)/%.dtb: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
+$(obj)/%.dtb: $(obj)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
 	$(call if_changed_dep,dtb)
 
 $(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE

scripts/Makefile.modfinal

@@ -21,9 +21,11 @@ __modfinal: $(modules:%.o=%.ko)
 # modname and part-of-module are set to make c_flags define proper module flags
 modname = $(notdir $(@:.mod.o=))
 part-of-module = y
+GCOV_PROFILE := n
+KCSAN_SANITIZE := n
 
 quiet_cmd_cc_o_c = CC [M]  $@
-      cmd_cc_o_c = $(CC) $(filter-out $(CC_FLAGS_CFI) $(CFLAGS_GCOV) $(CFLAGS_KCSAN), $(c_flags)) -c -o $@ $<
+      cmd_cc_o_c = $(CC) $(filter-out $(CC_FLAGS_CFI), $(c_flags)) -c -o $@ $<
 
 %.mod.o: %.mod.c FORCE
 	$(call if_changed_dep,cc_o_c)

scripts/Makefile.modpost

@@ -112,7 +112,7 @@ else
 
 # set src + obj - they may be used in the modules's Makefile
 obj := $(KBUILD_EXTMOD)
-src := $(obj)
+src := $(if $(VPATH),$(VPATH)/)$(obj)
 
 # Include the module's Makefile to find KBUILD_EXTRA_SYMBOLS
 include $(kbuild-file)

scripts/Makefile.vdsoinst

@@ -13,16 +13,15 @@ install-dir := $(MODLIB)/vdso
 
 define gen_install_rules
 
-src := $$(firstword $$(subst :,$(space),$(1)))
-dest := $(install-dir)/$$(or $$(word 2,$$(subst :,$(space),$(1))),$$(patsubst %.dbg,%,$$(notdir $(1))))
+dest := $(install-dir)/$$(patsubst %.dbg,%,$$(notdir $(1)))
 
 __default: $$(dest)
-$$(dest): $$(src) FORCE
+$$(dest): $(1) FORCE
 	$$(call cmd,install)
 
 # Some architectures create .build-id symlinks
 ifneq ($(filter arm sparc x86, $(SRCARCH)),)
-link := $(install-dir)/.build-id/$$(shell $(READELF) -n $$(src) | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p').debug
+link := $(install-dir)/.build-id/$$(shell $(READELF) -n $(1) | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p').debug
 
 __default: $$(link)
 $$(link): $$(dest) FORCE

scripts/Makefile.vmlinux

@@ -18,9 +18,6 @@ quiet_cmd_cc_o_c = CC      $@
 	$(call if_changed_dep,cc_o_c)
 
 ifdef CONFIG_MODULES
-KASAN_SANITIZE_.vmlinux.export.o := n
-KCSAN_SANITIZE_.vmlinux.export.o := n
-GCOV_PROFILE_.vmlinux.export.o := n
 targets += .vmlinux.export.o
 vmlinux: .vmlinux.export.o
 endif

scripts/dtc/Makefile

@@ -16,12 +16,12 @@ libfdt		= $(addprefix libfdt/,$(libfdt-objs))
 fdtoverlay-objs	:= $(libfdt) fdtoverlay.o util.o
 
 # Source files need to get at the userspace version of libfdt_env.h to compile
-HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
+HOST_EXTRACFLAGS += -I $(src)/libfdt
 HOST_EXTRACFLAGS += -DNO_YAML
 
 # Generated files need one more search path to include headers in source tree
-HOSTCFLAGS_dtc-lexer.lex.o := -I $(srctree)/$(src)
-HOSTCFLAGS_dtc-parser.tab.o := -I $(srctree)/$(src)
+HOSTCFLAGS_dtc-lexer.lex.o := -I $(src)
+HOSTCFLAGS_dtc-parser.tab.o := -I $(src)
 
 # dependencies on generated files need to be listed explicitly
 $(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h

scripts/gdb/linux/Makefile

@@ -2,7 +2,7 @@
 
 ifdef building_out_of_srctree
 
-symlinks := $(patsubst $(srctree)/$(src)/%,%,$(wildcard $(srctree)/$(src)/*.py))
+symlinks := $(patsubst $(src)/%,%,$(wildcard $(src)/*.py))
 
 quiet_cmd_symlink = SYMLINK $@
       cmd_symlink = ln -fsn $(patsubst $(obj)/%,$(abspath $(srctree))/$(src)/%,$@) $@

scripts/genksyms/Makefile

@@ -23,8 +23,8 @@ $(obj)/pars%.tab.c $(obj)/pars%.tab.h: $(src)/pars%.y FORCE
 endif
 
 # -I needed for generated C source to include headers in source tree
-HOSTCFLAGS_parse.tab.o := -I $(srctree)/$(src)
-HOSTCFLAGS_lex.lex.o := -I $(srctree)/$(src)
+HOSTCFLAGS_parse.tab.o := -I $(src)
+HOSTCFLAGS_lex.lex.o := -I $(src)
 
 # dependencies on generated files need to be listed explicitly
 $(obj)/lex.lex.o: $(obj)/parse.tab.h

scripts/kconfig/Makefile

@@ -57,7 +57,7 @@ $(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rul
 
 PHONY += localmodconfig localyesconfig
 localyesconfig localmodconfig: $(obj)/conf
-	$(Q)$(PERL) $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
+	$(Q)$(PERL) $(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
 	$(Q)if [ -f .config ]; then 				\
 		cmp -s .tmp.config .config ||			\
 		(mv -f .config .config.old.1;			\
@@ -118,7 +118,7 @@ tinyconfig:
 # CHECK: -o cache_dir=<path> working?
 PHONY += testconfig
 testconfig: $(obj)/conf
-	$(Q)$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
+	$(Q)$(PYTHON3) -B -m pytest $(src)/tests \
 	-o cache_dir=$(abspath $(obj)/tests/.cache) \
 	$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
 clean-files += tests/.cache
@@ -165,8 +165,8 @@ common-objs	:= confdata.o expr.o lexer.lex.o menu.o parser.tab.o \
 		   preprocess.o symbol.o util.o
 
 $(obj)/lexer.lex.o: $(obj)/parser.tab.h
-HOSTCFLAGS_lexer.lex.o	:= -I $(srctree)/$(src)
-HOSTCFLAGS_parser.tab.o	:= -I $(srctree)/$(src)
+HOSTCFLAGS_lexer.lex.o	:= -I $(src)
+HOSTCFLAGS_parser.tab.o	:= -I $(src)
 
 # conf: Used for defconfig, oldconfig and related targets
 hostprogs	+= conf

scripts/kconfig/conf.c

@@ -446,7 +446,7 @@ static int conf_sym(struct menu *menu)
 	}
 }
 
-static int conf_choice(struct menu *menu)
+static void conf_choice(struct menu *menu)
 {
 	struct symbol *sym, *def_sym;
 	struct menu *child;
@@ -459,19 +459,18 @@ static int conf_choice(struct menu *menu)
 		sym_calc_value(sym);
 		switch (sym_get_tristate_value(sym)) {
 		case no:
-			return 1;
 		case mod:
-			return 0;
+			return;
 		case yes:
 			break;
 		}
 	} else {
 		switch (sym_get_tristate_value(sym)) {
 		case no:
-			return 1;
+			return;
 		case mod:
 			printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
-			return 0;
+			return;
 		case yes:
 			break;
 		}
@@ -497,9 +496,8 @@ static int conf_choice(struct menu *menu)
 				printf("%*c", indent, '>');
 			} else
 				printf("%*c", indent, ' ');
-			printf(" %d. %s", cnt, menu_get_prompt(child));
-			if (child->sym->name)
-				printf(" (%s)", child->sym->name);
+			printf(" %d. %s (%s)", cnt, menu_get_prompt(child),
+			       child->sym->name);
 			if (!sym_has_value(child->sym))
 				printf(" (NEW)");
 			printf("\n");
@@ -552,7 +550,7 @@ static int conf_choice(struct menu *menu)
 			continue;
 		}
 		sym_set_tristate_value(child->sym, yes);
-		return 1;
+		return;
 	}
 }
 

scripts/kconfig/confdata.c

@@ -502,7 +502,7 @@ int conf_read(const char *name)
 
 	for_all_symbols(sym) {
 		sym_calc_value(sym);
-		if (sym_is_choice(sym) || (sym->flags & SYMBOL_NO_WRITE))
+		if (sym_is_choice(sym))
 			continue;
 		if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
 			/* check that calculated value agrees with saved value */
@@ -793,59 +793,39 @@ int conf_write_defconfig(const char *filename)
 
 	sym_clear_all_valid();
 
-	/* Traverse all menus to find all relevant symbols */
-	menu = rootmenu.list;
+	menu_for_each_entry(menu) {
+		struct menu *choice;
 
-	while (menu != NULL)
-	{
 		sym = menu->sym;
 		if (sym && !sym_is_choice(sym)) {
 			sym_calc_value(sym);
 			if (!(sym->flags & SYMBOL_WRITE))
-				goto next_menu;
+				continue;
 			sym->flags &= ~SYMBOL_WRITE;
 			/* If we cannot change the symbol - skip */
 			if (!sym_is_changeable(sym))
-				goto next_menu;
+				continue;
 			/* If symbol equals to default value - skip */
 			if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
-				goto next_menu;
+				continue;
 
 			/*
 			 * If symbol is a choice value and equals to the
 			 * default for a choice - skip.
-			 * But only if value is bool and equal to "y" and
-			 * choice is not "optional".
-			 * (If choice is "optional" then all values can be "n")
 			 */
-			if (sym_is_choice_value(sym)) {
-				struct symbol *cs;
+			choice = sym_get_choice_menu(sym);
+			if (choice) {
 				struct symbol *ds;
 
-				cs = prop_get_symbol(sym_get_choice_prop(sym));
-				ds = sym_choice_default(cs);
-				if (!sym_is_optional(cs) && sym == ds) {
+				ds = sym_choice_default(choice->sym);
+				if (sym == ds) {
 					if ((sym->type == S_BOOLEAN) &&
 					    sym_get_tristate_value(sym) == yes)
-						goto next_menu;
+						continue;
 				}
 			}
 			print_symbol_for_dotconfig(out, sym);
 		}
-next_menu:
-		if (menu->list != NULL) {
-			menu = menu->list;
-		}
-		else if (menu->next != NULL) {
-			menu = menu->next;
-		} else {
-			while ((menu = menu->parent)) {
-				if (menu->next != NULL) {
-					menu = menu->next;
-					break;
-				}
-			}
-		}
 	}
 	fclose(out);
 	return 0;
@@ -906,7 +886,7 @@ int conf_write(const char *name)
 				     "# %s\n"
 				     "#\n", str);
 			need_newline = false;
-		} else if (!(sym->flags & SYMBOL_CHOICE) &&
+		} else if (!sym_is_choice(sym) &&
 			   !(sym->flags & SYMBOL_WRITTEN)) {
 			sym_calc_value(sym);
 			if (!(sym->flags & SYMBOL_WRITE))
@@ -1028,7 +1008,7 @@ static int conf_touch_deps(void)
 
 	for_all_symbols(sym) {
 		sym_calc_value(sym);
-		if ((sym->flags & SYMBOL_NO_WRITE) || !sym->name)
+		if (sym_is_choice(sym))
 			continue;
 		if (sym->flags & SYMBOL_WRITE) {
 			if (sym->flags & SYMBOL_DEF_AUTO) {

scripts/kconfig/expr.h

@@ -72,8 +72,7 @@ enum {
 /*
  * Represents a configuration symbol.
  *
- * Choices are represented as a special kind of symbol and have the
- * SYMBOL_CHOICE bit set in 'flags'.
+ * Choices are represented as a special kind of symbol with null name.
  */
 struct symbol {
 	/* link node for the hash table */
@@ -131,14 +130,11 @@ struct symbol {
 
 #define SYMBOL_CONST      0x0001  /* symbol is const */
 #define SYMBOL_CHECK      0x0008  /* used during dependency checking */
-#define SYMBOL_CHOICE     0x0010  /* start of a choice block (null name) */
 #define SYMBOL_CHOICEVAL  0x0020  /* used as a value in a choice block */
 #define SYMBOL_VALID      0x0080  /* set when symbol.curr is calculated */
-#define SYMBOL_OPTIONAL   0x0100  /* choice is optional - values can be 'n' */
 #define SYMBOL_WRITE      0x0200  /* write symbol to file (KCONFIG_CONFIG) */
 #define SYMBOL_CHANGED    0x0400  /* ? */
 #define SYMBOL_WRITTEN    0x0800  /* track info to avoid double-write to .config */
-#define SYMBOL_NO_WRITE   0x1000  /* Symbol for internal use only; it will not be written */
 #define SYMBOL_CHECKED    0x2000  /* used during dependency checking */
 #define SYMBOL_WARNED     0x8000  /* warning has been issued */
 

scripts/kconfig/gconf.c

@@ -18,8 +18,6 @@
 #include <unistd.h>
 #include <time.h>
 
-//#define DEBUG
-
 enum {
 	SINGLE_VIEW, SPLIT_VIEW, FULL_VIEW
 };
@@ -71,39 +69,6 @@ static void set_node(GtkTreeIter * node, struct menu *menu, gchar ** row);
 static gchar **fill_row(struct menu *menu);
 static void conf_changed(void);
 
-/* Helping/Debugging Functions */
-#ifdef DEBUG
-static const char *dbg_sym_flags(int val)
-{
-	static char buf[256];
-
-	bzero(buf, 256);
-
-	if (val & SYMBOL_CONST)
-		strcat(buf, "const/");
-	if (val & SYMBOL_CHECK)
-		strcat(buf, "check/");
-	if (val & SYMBOL_CHOICE)
-		strcat(buf, "choice/");
-	if (val & SYMBOL_CHOICEVAL)
-		strcat(buf, "choiceval/");
-	if (val & SYMBOL_VALID)
-		strcat(buf, "valid/");
-	if (val & SYMBOL_OPTIONAL)
-		strcat(buf, "optional/");
-	if (val & SYMBOL_WRITE)
-		strcat(buf, "write/");
-	if (val & SYMBOL_CHANGED)
-		strcat(buf, "changed/");
-	if (val & SYMBOL_NO_WRITE)
-		strcat(buf, "no_write/");
-
-	buf[strlen(buf) - 1] = '\0';
-
-	return buf;
-}
-#endif
-
 static void replace_button_icon(GladeXML *xml, GdkDrawable *window,
 				GtkStyle *style, gchar *btn_name, gchar **xpm)
 {
@@ -493,7 +458,7 @@ load_filename(GtkFileSelection * file_selector, gpointer user_data)
 	if (conf_read(fn))
 		text_insert_msg("Error", "Unable to load configuration !");
 	else
-		display_tree(&rootmenu);
+		display_tree_part();
 }
 
 void on_load1_activate(GtkMenuItem * menuitem, gpointer user_data)
@@ -1082,15 +1047,13 @@ static gchar **fill_row(struct menu *menu)
 	row[COL_NAME] = g_strdup(sym->name);
 
 	sym_calc_value(sym);
-	sym->flags &= ~SYMBOL_CHANGED;
+	menu->flags &= ~MENU_CHANGED;
 
 	if (sym_is_choice(sym)) {	// parse childs for getting final value
 		struct menu *child;
 		struct symbol *def_sym = sym_get_choice_value(sym);
 		struct menu *def_menu = NULL;
 
-		row[COL_BTNVIS] = GINT_TO_POINTER(FALSE);
-
 		for (child = menu->list; child; child = child->next) {
 			if (menu_is_visible(child)
 			    && child->sym == def_sym)
@@ -1100,6 +1063,11 @@ static gchar **fill_row(struct menu *menu)
 		if (def_menu)
 			row[COL_VALUE] =
 			    g_strdup(menu_get_prompt(def_menu));
+
+		if (sym_get_type(sym) == S_BOOLEAN) {
+			row[COL_BTNVIS] = GINT_TO_POINTER(FALSE);
+			return row;
+		}
 	}
 	if (sym->flags & SYMBOL_CHOICEVAL)
 		row[COL_BTNRAD] = GINT_TO_POINTER(TRUE);
@@ -1107,11 +1075,6 @@ static gchar **fill_row(struct menu *menu)
 	stype = sym_get_type(sym);
 	switch (stype) {
 	case S_BOOLEAN:
-		if (GPOINTER_TO_INT(row[COL_PIXVIS]) == FALSE)
-			row[COL_BTNVIS] = GINT_TO_POINTER(TRUE);
-		if (sym_is_choice(sym))
-			break;
-		/* fall through */
 	case S_TRISTATE:
 		val = sym_get_tristate_value(sym);
 		switch (val) {
@@ -1268,12 +1231,6 @@ static void update_tree(struct menu *src, GtkTreeIter * dst)
 		else
 			menu2 = NULL;	// force adding of a first child
 
-#ifdef DEBUG
-		printf("%*c%s | %s\n", indent, ' ',
-		       menu1 ? menu_get_prompt(menu1) : "nil",
-		       menu2 ? menu_get_prompt(menu2) : "nil");
-#endif
-
 		if ((opt_mode == OPT_NORMAL && !menu_is_visible(child1)) ||
 		    (opt_mode == OPT_PROMPT && !menu_has_prompt(child1)) ||
 		    (opt_mode == OPT_ALL    && !menu_get_prompt(child1))) {
@@ -1314,7 +1271,7 @@ static void update_tree(struct menu *src, GtkTreeIter * dst)
 				else
 					goto reparse;	// next child
 			}
-		} else if (sym && (sym->flags & SYMBOL_CHANGED)) {
+		} else if (sym && (child1->flags & MENU_CHANGED)) {
 			set_node(child2, menu1, fill_row(menu1));
 		}
 
@@ -1330,7 +1287,6 @@ static void update_tree(struct menu *src, GtkTreeIter * dst)
 /* Display the whole tree (single/split/full view) */
 static void display_tree(struct menu *menu)
 {
-	struct symbol *sym;
 	struct property *prop;
 	struct menu *child;
 	enum prop_type ptype;
@@ -1342,11 +1298,9 @@ static void display_tree(struct menu *menu)
 
 	for (child = menu->list; child; child = child->next) {
 		prop = child->prompt;
-		sym = child->sym;
 		ptype = prop ? prop->type : P_UNKNOWN;
 
-		if (sym)
-			sym->flags &= ~SYMBOL_CHANGED;
+		menu->flags &= ~MENU_CHANGED;
 
 		if ((view_mode == SPLIT_VIEW)
 		    && !(child->flags & MENU_ROOT) && (tree == tree1))
@@ -1360,19 +1314,7 @@ static void display_tree(struct menu *menu)
 		    (opt_mode == OPT_PROMPT && menu_has_prompt(child)) ||
 		    (opt_mode == OPT_ALL    && menu_get_prompt(child)))
 			place_node(child, fill_row(child));
-#ifdef DEBUG
-		printf("%*c%s: ", indent, ' ', menu_get_prompt(child));
-		printf("%s", child->flags & MENU_ROOT ? "rootmenu | " : "");
-		printf("%s", prop_get_type_name(ptype));
-		printf(" | ");
-		if (sym) {
-			printf("%s", sym_type_name(sym->type));
-			printf(" | ");
-			printf("%s", dbg_sym_flags(sym->flags));
-			printf("\n");
-		} else
-			printf("\n");
-#endif
+
 		if ((view_mode != FULL_VIEW) && (ptype == P_MENU)
 		    && (tree == tree2))
 			continue;
@@ -1405,6 +1347,8 @@ static void display_tree_part(void)
 		display_tree(current);
 	else if (view_mode == SPLIT_VIEW)
 		display_tree(browsed);
+	else if (view_mode == FULL_VIEW)
+		display_tree(&rootmenu);
 	gtk_tree_view_expand_all(GTK_TREE_VIEW(tree2_w));
 }
 

scripts/kconfig/lexer.l

@@ -120,7 +120,6 @@ n	[A-Za-z0-9_-]
 "menuconfig"		return T_MENUCONFIG;
 "modules"		return T_MODULES;
 "on"			return T_ON;
-"optional"		return T_OPTIONAL;
 "prompt"		return T_PROMPT;
 "range"			return T_RANGE;
 "select"		return T_SELECT;

scripts/kconfig/lkc.h

@@ -79,6 +79,11 @@ void str_printf(struct gstr *gs, const char *fmt, ...);
 char *str_get(struct gstr *gs);
 
 /* menu.c */
+struct menu *menu_next(struct menu *menu, struct menu *root);
+#define menu_for_each_sub_entry(menu, root) \
+	for (menu = menu_next(root, root); menu; menu = menu_next(menu, root))
+#define menu_for_each_entry(menu) \
+	menu_for_each_sub_entry(menu, &rootmenu)
 void _menu_init(void);
 void menu_warn(struct menu *menu, const char *fmt, ...);
 struct menu *menu_add_menu(void);
@@ -124,7 +129,8 @@ static inline struct symbol *sym_get_choice_value(struct symbol *sym)
 
 static inline bool sym_is_choice(struct symbol *sym)
 {
-	return sym->flags & SYMBOL_CHOICE ? true : false;
+	/* A choice is a symbol with no name */
+	return sym->name == NULL;
 }
 
 static inline bool sym_is_choice_value(struct symbol *sym)
@@ -132,11 +138,6 @@ static inline bool sym_is_choice_value(struct symbol *sym)
 	return sym->flags & SYMBOL_CHOICEVAL ? true : false;
 }
 
-static inline bool sym_is_optional(struct symbol *sym)
-{
-	return sym->flags & SYMBOL_OPTIONAL ? true : false;
-}
-
 static inline bool sym_has_value(struct symbol *sym)
 {
 	return sym->flags & SYMBOL_DEF_USER ? true : false;

scripts/kconfig/lkc_proto.h

@@ -34,6 +34,7 @@ bool sym_string_within_range(struct symbol *sym, const char *str);
 bool sym_set_string_value(struct symbol *sym, const char *newval);
 bool sym_is_changeable(struct symbol *sym);
 struct property * sym_get_choice_prop(struct symbol *sym);
+struct menu *sym_get_choice_menu(struct symbol *sym);
 const char * sym_get_string_value(struct symbol *sym);
 
 const char * prop_get_type_name(enum prop_type type);

scripts/kconfig/lxdialog/util.c

@@ -17,22 +17,13 @@ struct dialog_info dlg;
 
 static void set_mono_theme(void)
 {
-	dlg.screen.atr = A_NORMAL;
-	dlg.shadow.atr = A_NORMAL;
-	dlg.dialog.atr = A_NORMAL;
 	dlg.title.atr = A_BOLD;
-	dlg.border.atr = A_NORMAL;
 	dlg.button_active.atr = A_REVERSE;
 	dlg.button_inactive.atr = A_DIM;
 	dlg.button_key_active.atr = A_REVERSE;
 	dlg.button_key_inactive.atr = A_BOLD;
 	dlg.button_label_active.atr = A_REVERSE;
-	dlg.button_label_inactive.atr = A_NORMAL;
-	dlg.inputbox.atr = A_NORMAL;
 	dlg.position_indicator.atr = A_BOLD;
-	dlg.menubox.atr = A_NORMAL;
-	dlg.menubox_border.atr = A_NORMAL;
-	dlg.item.atr = A_NORMAL;
 	dlg.item_selected.atr = A_REVERSE;
 	dlg.tag.atr = A_BOLD;
 	dlg.tag_selected.atr = A_REVERSE;

scripts/kconfig/mconf.c

@@ -525,19 +525,12 @@ static void build_conf(struct menu *menu)
 
 		val = sym_get_tristate_value(sym);
 		if (sym_is_changeable(sym)) {
-			switch (type) {
-			case S_BOOLEAN:
-				item_make("[%c]", val == no ? ' ' : '*');
-				break;
-			case S_TRISTATE:
-				switch (val) {
-				case yes: ch = '*'; break;
-				case mod: ch = 'M'; break;
-				default:  ch = ' '; break;
-				}
-				item_make("<%c>", ch);
-				break;
+			switch (val) {
+			case yes: ch = '*'; break;
+			case mod: ch = 'M'; break;
+			default:  ch = ' '; break;
 			}
+			item_make("<%c>", ch);
 			item_set_tag('t');
 			item_set_data(menu);
 		} else {
@@ -548,15 +541,8 @@ static void build_conf(struct menu *menu)
 
 		item_add_str("%*c%s", indent + 1, ' ', menu_get_prompt(menu));
 		if (val == yes) {
-			if (def_menu) {
-				item_add_str(" (%s)", menu_get_prompt(def_menu));
-				item_add_str("  --->");
-				if (def_menu->list) {
-					indent += 2;
-					build_conf(def_menu);
-					indent -= 2;
-				}
-			}
+			if (def_menu)
+				item_add_str(" (%s)  --->", menu_get_prompt(def_menu));
 			return;
 		}
 	} else {
@@ -568,49 +554,43 @@ static void build_conf(struct menu *menu)
 		}
 		child_count++;
 		val = sym_get_tristate_value(sym);
-		if (sym_is_choice_value(sym) && val == yes) {
-			item_make("   ");
-			item_set_tag(':');
+		switch (type) {
+		case S_BOOLEAN:
+			if (sym_is_changeable(sym))
+				item_make("[%c]", val == no ? ' ' : '*');
+			else
+				item_make("-%c-", val == no ? ' ' : '*');
+			item_set_tag('t');
 			item_set_data(menu);
-		} else {
-			switch (type) {
-			case S_BOOLEAN:
-				if (sym_is_changeable(sym))
-					item_make("[%c]", val == no ? ' ' : '*');
-				else
-					item_make("-%c-", val == no ? ' ' : '*');
-				item_set_tag('t');
-				item_set_data(menu);
-				break;
-			case S_TRISTATE:
-				switch (val) {
-				case yes: ch = '*'; break;
-				case mod: ch = 'M'; break;
-				default:  ch = ' '; break;
-				}
-				if (sym_is_changeable(sym)) {
-					if (sym->rev_dep.tri == mod)
-						item_make("{%c}", ch);
-					else
-						item_make("<%c>", ch);
-				} else
-					item_make("-%c-", ch);
-				item_set_tag('t');
-				item_set_data(menu);
-				break;
-			default:
-				tmp = 2 + strlen(sym_get_string_value(sym)); /* () = 2 */
-				item_make("(%s)", sym_get_string_value(sym));
-				tmp = indent - tmp + 4;
-				if (tmp < 0)
-					tmp = 0;
-				item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
-					     (sym_has_value(sym) || !sym_is_changeable(sym)) ?
-					     "" : " (NEW)");
-				item_set_tag('s');
-				item_set_data(menu);
-				goto conf_childs;
+			break;
+		case S_TRISTATE:
+			switch (val) {
+			case yes: ch = '*'; break;
+			case mod: ch = 'M'; break;
+			default:  ch = ' '; break;
 			}
+			if (sym_is_changeable(sym)) {
+				if (sym->rev_dep.tri == mod)
+					item_make("{%c}", ch);
+				else
+					item_make("<%c>", ch);
+			} else
+				item_make("-%c-", ch);
+			item_set_tag('t');
+			item_set_data(menu);
+			break;
+		default:
+			tmp = 2 + strlen(sym_get_string_value(sym)); /* () = 2 */
+			item_make("(%s)", sym_get_string_value(sym));
+			tmp = indent - tmp + 4;
+			if (tmp < 0)
+				tmp = 0;
+			item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
+				     (sym_has_value(sym) || !sym_is_changeable(sym)) ?
+				     "" : " (NEW)");
+			item_set_tag('s');
+			item_set_data(menu);
+			goto conf_childs;
 		}
 		item_add_str("%*c%s%s", indent + 1, ' ', menu_get_prompt(menu),
 			  (sym_has_value(sym) || !sym_is_changeable(sym)) ?

scripts/kconfig/menu.c

@@ -17,6 +17,27 @@ static const char nohelp_text[] = "There is no help available for this option.";
 struct menu rootmenu;
 static struct menu **last_entry_ptr;
 
+/**
+ * menu_next - return the next menu entry with depth-first traversal
+ * @menu: pointer to the current menu
+ * @root: root of the sub-tree to traverse. If NULL is given, the traveral
+ *        continues until it reaches the end of the entire menu tree.
+ * return: the menu to visit next, or NULL when it reaches the end.
+ */
+struct menu *menu_next(struct menu *menu, struct menu *root)
+{
+	if (menu->list)
+		return menu->list;
+
+	while (menu != root && !menu->next)
+		menu = menu->parent;
+
+	if (menu == root)
+		return NULL;
+
+	return menu->next;
+}
+
 void menu_warn(struct menu *menu, const char *fmt, ...)
 {
 	va_list ap;
@@ -242,11 +263,9 @@ static void sym_check_prop(struct symbol *sym)
 					    sym->name);
 			}
 			if (sym_is_choice(sym)) {
-				struct property *choice_prop =
-					sym_get_choice_prop(sym2);
+				struct menu *choice = sym_get_choice_menu(sym2);
 
-				if (!choice_prop ||
-				    prop_get_symbol(choice_prop) != sym)
+				if (!choice || choice->sym != sym)
 					prop_warn(prop,
 						  "choice default symbol '%s' is not contained in the choice",
 						  sym2->name);
@@ -486,18 +505,6 @@ static void _menu_finalize(struct menu *parent, bool inside_choice)
 		    menu->sym && !sym_is_choice_value(menu->sym)) {
 			current_entry = menu;
 			menu->sym->flags |= SYMBOL_CHOICEVAL;
-			if (!menu->prompt)
-				menu_warn(menu, "choice value must have a prompt");
-			for (prop = menu->sym->prop; prop; prop = prop->next) {
-				if (prop->type == P_DEFAULT)
-					prop_warn(prop, "defaults for choice "
-						  "values not supported");
-				if (prop->menu == menu)
-					continue;
-				if (prop->type == P_PROMPT &&
-				    prop->menu->parent->sym != sym)
-					prop_warn(prop, "choice value used outside its choice group");
-			}
 			/* Non-tristate choice values of tristate choices must
 			 * depend on the choice being set to Y. The choice
 			 * values' dependencies were propagated to their
@@ -572,15 +579,11 @@ static void _menu_finalize(struct menu *parent, bool inside_choice)
 	}
 
 	/*
-	 * For non-optional choices, add a reverse dependency (corresponding to
-	 * a select) of '<visibility> && m'. This prevents the user from
-	 * setting the choice mode to 'n' when the choice is visible.
-	 *
-	 * This would also work for non-choice symbols, but only non-optional
-	 * choices clear SYMBOL_OPTIONAL as of writing. Choices are implemented
-	 * as a type of symbol.
+	 * For choices, add a reverse dependency (corresponding to a select) of
+	 * '<visibility> && m'. This prevents the user from setting the choice
+	 * mode to 'n' when the choice is visible.
 	 */
-	if (sym && !sym_is_optional(sym) && parent->prompt) {
+	if (sym && sym_is_choice(sym) && parent->prompt) {
 		sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
 				expr_alloc_and(parent->prompt->visible.expr,
 					expr_alloc_symbol(&symbol_mod)));

scripts/kconfig/nconf.c

@@ -826,26 +826,18 @@ static void build_conf(struct menu *menu)
 
 		val = sym_get_tristate_value(sym);
 		if (sym_is_changeable(sym)) {
-			switch (type) {
-			case S_BOOLEAN:
-				item_make(menu, 't', "[%c]",
-						val == no ? ' ' : '*');
+			switch (val) {
+			case yes:
+				ch = '*';
 				break;
-			case S_TRISTATE:
-				switch (val) {
-				case yes:
-					ch = '*';
-					break;
-				case mod:
-					ch = 'M';
-					break;
-				default:
-					ch = ' ';
-					break;
-				}
-				item_make(menu, 't', "<%c>", ch);
+			case mod:
+				ch = 'M';
+				break;
+			default:
+				ch = ' ';
 				break;
 			}
+			item_make(menu, 't', "<%c>", ch);
 		} else {
 			item_make(menu, def_menu ? 't' : ':', "   ");
 		}
@@ -853,16 +845,8 @@ static void build_conf(struct menu *menu)
 		item_add_str("%*c%s", indent + 1,
 				' ', menu_get_prompt(menu));
 		if (val == yes) {
-			if (def_menu) {
-				item_add_str(" (%s)",
-					menu_get_prompt(def_menu));
-				item_add_str("  --->");
-				if (def_menu->list) {
-					indent += 2;
-					build_conf(def_menu);
-					indent -= 2;
-				}
-			}
+			if (def_menu)
+				item_add_str(" (%s)  --->", menu_get_prompt(def_menu));
 			return;
 		}
 	} else {
@@ -874,54 +858,46 @@ static void build_conf(struct menu *menu)
 		}
 		child_count++;
 		val = sym_get_tristate_value(sym);
-		if (sym_is_choice_value(sym) && val == yes) {
-			item_make(menu, ':', "   ");
-		} else {
-			switch (type) {
-			case S_BOOLEAN:
-				if (sym_is_changeable(sym))
-					item_make(menu, 't', "[%c]",
-						val == no ? ' ' : '*');
-				else
-					item_make(menu, 't', "-%c-",
-						val == no ? ' ' : '*');
+		switch (type) {
+		case S_BOOLEAN:
+			if (sym_is_changeable(sym))
+				item_make(menu, 't', "[%c]",
+					  val == no ? ' ' : '*');
+			else
+				item_make(menu, 't', "-%c-",
+					  val == no ? ' ' : '*');
+			break;
+		case S_TRISTATE:
+			switch (val) {
+			case yes:
+				ch = '*';
 				break;
-			case S_TRISTATE:
-				switch (val) {
-				case yes:
-					ch = '*';
-					break;
-				case mod:
-					ch = 'M';
-					break;
-				default:
-					ch = ' ';
-					break;
-				}
-				if (sym_is_changeable(sym)) {
-					if (sym->rev_dep.tri == mod)
-						item_make(menu,
-							't', "{%c}", ch);
-					else
-						item_make(menu,
-							't', "<%c>", ch);
-				} else
-					item_make(menu, 't', "-%c-", ch);
+			case mod:
+				ch = 'M';
 				break;
 			default:
-				tmp = 2 + strlen(sym_get_string_value(sym));
-				item_make(menu, 's', "    (%s)",
-						sym_get_string_value(sym));
-				tmp = indent - tmp + 4;
-				if (tmp < 0)
-					tmp = 0;
-				item_add_str("%*c%s%s", tmp, ' ',
-						menu_get_prompt(menu),
-						(sym_has_value(sym) ||
-						 !sym_is_changeable(sym)) ? "" :
-						" (NEW)");
-				goto conf_childs;
+				ch = ' ';
+				break;
 			}
+			if (sym_is_changeable(sym)) {
+				if (sym->rev_dep.tri == mod)
+					item_make(menu, 't', "{%c}", ch);
+				else
+					item_make(menu, 't', "<%c>", ch);
+			} else
+				item_make(menu, 't', "-%c-", ch);
+			break;
+		default:
+			tmp = 2 + strlen(sym_get_string_value(sym));
+			item_make(menu, 's', "    (%s)",
+				  sym_get_string_value(sym));
+			tmp = indent - tmp + 4;
+			if (tmp < 0)
+				tmp = 0;
+			item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
+				     (sym_has_value(sym) ||
+				      !sym_is_changeable(sym)) ? "" : " (NEW)");
+			goto conf_childs;
 		}
 		item_add_str("%*c%s%s", indent + 1, ' ',
 				menu_get_prompt(menu),

scripts/kconfig/parser.y

@@ -30,6 +30,8 @@ static bool zconf_endtoken(const char *tokenname,
 
 struct menu *current_menu, *current_entry;
 
+static bool inside_choice = false;
+
 %}
 
 %union
@@ -69,7 +71,6 @@ struct menu *current_menu, *current_entry;
 %token T_MODULES
 %token T_ON
 %token T_OPEN_PAREN
-%token T_OPTIONAL
 %token T_PLUS_EQUAL
 %token T_PROMPT
 %token T_RANGE
@@ -140,19 +141,25 @@ stmt_list_in_choice:
 
 config_entry_start: T_CONFIG nonconst_symbol T_EOL
 {
-	$2->flags |= SYMBOL_OPTIONAL;
 	menu_add_entry($2);
 	printd(DEBUG_PARSE, "%s:%d:config %s\n", cur_filename, cur_lineno, $2->name);
 };
 
 config_stmt: config_entry_start config_option_list
 {
+	if (inside_choice) {
+		if (!current_entry->prompt) {
+			fprintf(stderr, "%s:%d: error: choice member must have a prompt\n",
+				current_entry->filename, current_entry->lineno);
+			yynerrs++;
+		}
+	}
+
 	printd(DEBUG_PARSE, "%s:%d:endconfig\n", cur_filename, cur_lineno);
 };
 
 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
 {
-	$2->flags |= SYMBOL_OPTIONAL;
 	menu_add_entry($2);
 	printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", cur_filename, cur_lineno, $2->name);
 };
@@ -224,8 +231,8 @@ config_option: T_MODULES T_EOL
 
 choice: T_CHOICE T_EOL
 {
-	struct symbol *sym = sym_lookup(NULL, SYMBOL_CHOICE);
-	sym->flags |= SYMBOL_NO_WRITE;
+	struct symbol *sym = sym_lookup(NULL, 0);
+
 	menu_add_entry(sym);
 	menu_add_expr(P_CHOICE, NULL, NULL);
 	printd(DEBUG_PARSE, "%s:%d:choice\n", cur_filename, cur_lineno);
@@ -240,10 +247,14 @@ choice_entry: choice choice_option_list
 	}
 
 	$$ = menu_add_menu();
+
+	inside_choice = true;
 };
 
 choice_end: end
 {
+	inside_choice = false;
+
 	if (zconf_endtoken($1, "choice")) {
 		menu_end_menu();
 		printd(DEBUG_PARSE, "%s:%d:endchoice\n", cur_filename, cur_lineno);
@@ -272,12 +283,6 @@ choice_option: logic_type prompt_stmt_opt T_EOL
 	printd(DEBUG_PARSE, "%s:%d:type(%u)\n", cur_filename, cur_lineno, $1);
 };
 
-choice_option: T_OPTIONAL T_EOL
-{
-	current_entry->sym->flags |= SYMBOL_OPTIONAL;
-	printd(DEBUG_PARSE, "%s:%d:optional\n", cur_filename, cur_lineno);
-};
-
 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
 {
 	menu_add_symbol(P_DEFAULT, $2, $3);
@@ -471,6 +476,38 @@ assign_val:
 
 %%
 
+/**
+ * choice_check_sanity - check sanity of a choice member
+ *
+ * @menu: menu of the choice member
+ *
+ * Return: -1 if an error is found, 0 otherwise.
+ */
+static int choice_check_sanity(struct menu *menu)
+{
+	struct property *prop;
+	int ret = 0;
+
+	for (prop = menu->sym->prop; prop; prop = prop->next) {
+		if (prop->type == P_DEFAULT) {
+			fprintf(stderr, "%s:%d: error: %s",
+				prop->filename, prop->lineno,
+				"defaults for choice values not supported\n");
+			ret = -1;
+		}
+
+		if (prop->menu != menu && prop->type == P_PROMPT &&
+		    prop->menu->parent != menu->parent) {
+			fprintf(stderr, "%s:%d: error: %s",
+				prop->filename, prop->lineno,
+				"choice value has a prompt outside its choice group\n");
+			ret = -1;
+		}
+	}
+
+	return ret;
+}
+
 void conf_parse(const char *name)
 {
 	struct menu *menu;
@@ -517,20 +554,17 @@ void conf_parse(const char *name)
 
 	menu_finalize();
 
-	menu = &rootmenu;
-	while (menu) {
+	menu_for_each_entry(menu) {
+		struct menu *child;
+
 		if (menu->sym && sym_check_deps(menu->sym))
 			yynerrs++;
 
-		if (menu->list) {
-			menu = menu->list;
-			continue;
+		if (menu->sym && sym_is_choice(menu->sym)) {
+			menu_for_each_sub_entry(child, menu)
+				if (child->sym && choice_check_sanity(child))
+					yynerrs++;
 		}
-
-		while (!menu->next && menu->parent)
-			menu = menu->parent;
-
-		menu = menu->next;
 	}
 
 	if (yynerrs)

scripts/kconfig/symbol.c

@@ -78,6 +78,41 @@ struct property *sym_get_choice_prop(struct symbol *sym)
 	return NULL;
 }
 
+/**
+ * sym_get_choice_menu - get the parent choice menu if present
+ *
+ * @sym: a symbol pointer
+ *
+ * Return: a choice menu if this function is called against a choice member.
+ */
+struct menu *sym_get_choice_menu(struct symbol *sym)
+{
+	struct menu *menu = NULL;
+	struct menu *m;
+
+	/*
+	 * Choice members must have a prompt. Find a menu entry with a prompt,
+	 * and assume it resides inside a choice block.
+	 */
+	list_for_each_entry(m, &sym->menus, link)
+		if (m->prompt) {
+			menu = m;
+			break;
+		}
+
+	if (!menu)
+		return NULL;
+
+	do {
+		menu = menu->parent;
+	} while (menu && !menu->sym);
+
+	if (menu && menu->sym && sym_is_choice(menu->sym))
+		return menu;
+
+	return NULL;
+}
+
 static struct property *sym_get_default_prop(struct symbol *sym)
 {
 	struct property *prop;
@@ -152,13 +187,11 @@ static void sym_validate_range(struct symbol *sym)
 
 static void sym_set_changed(struct symbol *sym)
 {
-	struct property *prop;
+	struct menu *menu;
 
 	sym->flags |= SYMBOL_CHANGED;
-	for (prop = sym->prop; prop; prop = prop->next) {
-		if (prop->menu)
-			prop->menu->flags |= MENU_CHANGED;
-	}
+	list_for_each_entry(menu, &sym->menus, link)
+		menu->flags |= MENU_CHANGED;
 }
 
 static void sym_set_all_changed(void)
@@ -466,10 +499,9 @@ void sym_calc_value(struct symbol *sym)
 			if (sym->flags & SYMBOL_CHANGED)
 				sym_set_changed(choice_sym);
 		}
-	}
 
-	if (sym->flags & SYMBOL_NO_WRITE)
 		sym->flags &= ~SYMBOL_WRITE;
+	}
 
 	if (sym->flags & SYMBOL_NEED_SET_CHOICE_VALUES)
 		set_all_choice_values(sym);
@@ -827,7 +859,7 @@ struct symbol *sym_lookup(const char *name, int flags)
 			if (symbol->name &&
 			    !strcmp(symbol->name, name) &&
 			    (flags ? symbol->flags & flags
-				   : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE))))
+				   : !(symbol->flags & SYMBOL_CONST)))
 				return symbol;
 		}
 		new_name = xstrdup(name);
@@ -1172,16 +1204,18 @@ static struct symbol *sym_check_sym_deps(struct symbol *sym)
 
 static struct symbol *sym_check_choice_deps(struct symbol *choice)
 {
-	struct symbol *sym, *sym2;
-	struct property *prop;
-	struct expr *e;
+	struct menu *choice_menu, *menu;
+	struct symbol *sym2;
 	struct dep_stack stack;
 
 	dep_stack_insert(&stack, choice);
 
-	prop = sym_get_choice_prop(choice);
-	expr_list_for_each_sym(prop->expr, e, sym)
-		sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
+	choice_menu = list_first_entry(&choice->menus, struct menu, link);
+
+	menu_for_each_sub_entry(menu, choice_menu) {
+		if (menu->sym)
+			menu->sym->flags |= SYMBOL_CHECK | SYMBOL_CHECKED;
+	}
 
 	choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
 	sym2 = sym_check_sym_deps(choice);
@@ -1189,14 +1223,17 @@ static struct symbol *sym_check_choice_deps(struct symbol *choice)
 	if (sym2)
 		goto out;
 
-	expr_list_for_each_sym(prop->expr, e, sym) {
-		sym2 = sym_check_sym_deps(sym);
+	menu_for_each_sub_entry(menu, choice_menu) {
+		if (!menu->sym)
+			continue;
+		sym2 = sym_check_sym_deps(menu->sym);
 		if (sym2)
 			break;
 	}
 out:
-	expr_list_for_each_sym(prop->expr, e, sym)
-		sym->flags &= ~SYMBOL_CHECK;
+	menu_for_each_sub_entry(menu, choice_menu)
+		if (menu->sym)
+			menu->sym->flags &= ~SYMBOL_CHECK;
 
 	if (sym2 && sym_is_choice_value(sym2) &&
 	    prop_get_symbol(sym_get_choice_prop(sym2)) == choice)

scripts/kconfig/tests/choice/Kconfig

@@ -17,19 +17,6 @@ config BOOL_CHOICE1
 
 endchoice
 
-choice
-	prompt "optional boolean choice"
-	optional
-	default OPT_BOOL_CHOICE1
-
-config OPT_BOOL_CHOICE0
-	bool "choice 0"
-
-config OPT_BOOL_CHOICE1
-	bool "choice 1"
-
-endchoice
-
 choice
 	prompt "tristate choice"
 	default TRI_CHOICE1
@@ -41,16 +28,3 @@ config TRI_CHOICE1
 	tristate "choice 1"
 
 endchoice
-
-choice
-	prompt "optional tristate choice"
-	optional
-	default OPT_TRI_CHOICE1
-
-config OPT_TRI_CHOICE0
-	tristate "choice 0"
-
-config OPT_TRI_CHOICE1
-	tristate "choice 1"
-
-endchoice

scripts/kconfig/tests/choice/__init__.py

@@ -6,8 +6,6 @@ The handling of 'choice' is a bit complicated part in Kconfig.
 
 The behavior of 'y' choice is intuitive.  If choice values are tristate,
 the choice can be 'm' where each value can be enabled independently.
-Also, if a choice is marked as 'optional', the whole choice can be
-invisible.
 """
 
 

scripts/kconfig/tests/choice/allmod_expected_config

 CONFIG_MODULES=y
 # CONFIG_BOOL_CHOICE0 is not set
 CONFIG_BOOL_CHOICE1=y
-# CONFIG_OPT_BOOL_CHOICE0 is not set
-CONFIG_OPT_BOOL_CHOICE1=y
 CONFIG_TRI_CHOICE0=m
 CONFIG_TRI_CHOICE1=m
-CONFIG_OPT_TRI_CHOICE0=m
-CONFIG_OPT_TRI_CHOICE1=m

scripts/kconfig/tests/choice/allyes_expected_config

 CONFIG_MODULES=y
 # CONFIG_BOOL_CHOICE0 is not set
 CONFIG_BOOL_CHOICE1=y
-# CONFIG_OPT_BOOL_CHOICE0 is not set
-CONFIG_OPT_BOOL_CHOICE1=y
 # CONFIG_TRI_CHOICE0 is not set
 CONFIG_TRI_CHOICE1=y
-# CONFIG_OPT_TRI_CHOICE0 is not set
-CONFIG_OPT_TRI_CHOICE1=y

scripts/kconfig/tests/choice/oldask0_expected_stdout

@@ -3,8 +3,6 @@ boolean choice
   1. choice 0 (BOOL_CHOICE0) (NEW)
 > 2. choice 1 (BOOL_CHOICE1) (NEW)
 choice[1-2?]: 
-optional boolean choice [N/y/?] (NEW) 
 tristate choice [M/y/?] (NEW) 
   choice 0 (TRI_CHOICE0) [N/m/?] (NEW) 
   choice 1 (TRI_CHOICE1) [N/m/?] (NEW) 
-optional tristate choice [N/m/y/?] (NEW) 

scripts/kconfig/tests/choice/oldask1_config

 # CONFIG_MODULES is not set
-CONFIG_OPT_BOOL_CHOICE0=y

scripts/kconfig/tests/choice/oldask1_expected_stdout

@@ -3,13 +3,7 @@ boolean choice
   1. choice 0 (BOOL_CHOICE0) (NEW)
 > 2. choice 1 (BOOL_CHOICE1) (NEW)
 choice[1-2?]: 
-optional boolean choice [Y/n/?] (NEW) 
-optional boolean choice
-> 1. choice 0 (OPT_BOOL_CHOICE0)
-  2. choice 1 (OPT_BOOL_CHOICE1) (NEW)
-choice[1-2?]: 
 tristate choice
   1. choice 0 (TRI_CHOICE0) (NEW)
 > 2. choice 1 (TRI_CHOICE1) (NEW)
 choice[1-2?]: 
-optional tristate choice [N/y/?] 

scripts/mod/Makefile

 # SPDX-License-Identifier: GPL-2.0
-OBJECT_FILES_NON_STANDARD := y
 CFLAGS_REMOVE_empty.o += $(CC_FLAGS_LTO)
 
 hostprogs-always-y	+= modpost mk_elfconfig

scripts/module.lds.S

@@ -13,6 +13,7 @@ SECTIONS {
 	/DISCARD/ : {
 		*(.discard)
 		*(.discard.*)
+		*(.export_symbol)
 	}
 
 	__ksymtab		0 : { *(SORT(___ksymtab+*)) }

scripts/package/buildtar

@@ -53,18 +53,20 @@ cp -v -- "${objtree}/vmlinux" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
 #
 # Install arch-specific kernel image(s)
 #
+# Note:
+#   mips and arm64 copy the first image found. This may not produce the desired
+#   outcome because it may pick up a stale file remaining in the build tree.
+#
 case "${ARCH}" in
-	x86|i386|x86_64)
-		[ -f "${objtree}/arch/x86/boot/bzImage" ] && cp -v -- "${objtree}/arch/x86/boot/bzImage" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
-		;;
 	alpha)
-		[ -f "${objtree}/arch/alpha/boot/vmlinux.gz" ] && cp -v -- "${objtree}/arch/alpha/boot/vmlinux.gz" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
+		cp -v -- "${objtree}/arch/alpha/boot/vmlinux.gz" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
 		;;
 	parisc*)
-		[ -f "${KBUILD_IMAGE}" ] && cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
+		cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
 		[ -f "${objtree}/lifimage" ] && cp -v -- "${objtree}/lifimage" "${tmpdir}/boot/lifimage-${KERNELRELEASE}"
 		;;
 	mips)
+		# Please note the following code may copy a stale file.
 		if [ -f "${objtree}/arch/mips/boot/compressed/vmlinux.bin" ]; then
 			cp -v -- "${objtree}/arch/mips/boot/compressed/vmlinux.bin" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
 		elif [ -f "${objtree}/arch/mips/boot/compressed/vmlinux.ecoff" ]; then
@@ -86,6 +88,7 @@ case "${ARCH}" in
 		fi
 		;;
 	arm64)
+		# Please note the following code may copy a stale file.
 		for i in Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo vmlinuz.efi ; do
 			if [ -f "${objtree}/arch/arm64/boot/${i}" ] ; then
 				cp -v -- "${objtree}/arch/arm64/boot/${i}" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
@@ -94,21 +97,14 @@ case "${ARCH}" in
 		done
 		;;
 	riscv)
-		for i in Image.bz2 Image.gz Image; do
-			if [ -f "${objtree}/arch/riscv/boot/${i}" ] ; then
-				cp -v -- "${objtree}/arch/riscv/boot/${i}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
-				break
-			fi
-		done
+		case "${KBUILD_IMAGE##*/}" in
+			Image.*|vmlinuz.efi)
+				cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}";;
+			*)
+				cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}";;
+		esac
 		;;
 	*)
-		[ -f "${KBUILD_IMAGE}" ] && cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-kbuild-${KERNELRELEASE}"
-		echo "" >&2
-		echo '** ** **  WARNING  ** ** **' >&2
-		echo "" >&2
-		echo "Your architecture did not define any architecture-dependent files" >&2
-		echo "to be placed into the tarball. Please add those to ${0} ..." >&2
-		echo "" >&2
-		sleep 5
+		cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
 		;;
 esac

scripts/unifdef.c

@@ -203,7 +203,7 @@ static int              depth;			/* current #if nesting */
 static int              delcount;		/* count of deleted lines */
 static unsigned         blankcount;		/* count of blank lines */
 static unsigned         blankmax;		/* maximum recent blankcount */
-static bool             constexpr;		/* constant #if expression */
+static bool             constexpression;	/* constant #if expression */
 static bool             zerosyms = true;	/* to format symdepth output */
 static bool             firstsym;		/* ditto */
 
@@ -819,7 +819,7 @@ static const struct ops {
 /*
  * Function for evaluating the innermost parts of expressions,
  * viz. !expr (expr) number defined(symbol) symbol
- * We reset the constexpr flag in the last two cases.
+ * We reset the constexpression flag in the last two cases.
  */
 static Linetype
 eval_unary(const struct ops *ops, int *valp, const char **cpp)
@@ -877,7 +877,7 @@ eval_unary(const struct ops *ops, int *valp, const char **cpp)
 		cp = skipcomment(cp);
 		if (defparen && *cp++ != ')')
 			return (LT_ERROR);
-		constexpr = false;
+		constexpression = false;
 	} else if (!endsym(*cp)) {
 		debug("eval%d symbol", ops - eval_ops);
 		sym = findsym(cp);
@@ -895,7 +895,7 @@ eval_unary(const struct ops *ops, int *valp, const char **cpp)
 			lt = *valp ? LT_TRUE : LT_FALSE;
 			cp = skipargs(cp);
 		}
-		constexpr = false;
+		constexpression = false;
 	} else {
 		debug("eval%d bad expr", ops - eval_ops);
 		return (LT_ERROR);
@@ -955,10 +955,10 @@ ifeval(const char **cpp)
 	int val = 0;
 
 	debug("eval %s", *cpp);
-	constexpr = killconsts ? false : true;
+	constexpression = killconsts ? false : true;
 	ret = eval_table(eval_ops, &val, cpp);
 	debug("eval = %d", val);
-	return (constexpr ? LT_IF : ret == LT_ERROR ? LT_IF : ret);
+	return (constexpression ? LT_IF : ret == LT_ERROR ? LT_IF : ret);
 }
 
 /*

security/tomoyo/Makefile

@@ -11,7 +11,7 @@ quiet_cmd_policy = POLICY  $@
 	printf '\t"";\n';) \
 	} > $@
 
-$(obj)/builtin-policy.h: $(wildcard $(obj)/policy/*.conf $(srctree)/$(src)/policy/*.conf.default) FORCE
+$(obj)/builtin-policy.h: $(wildcard $(obj)/policy/*.conf $(src)/policy/*.conf.default) FORCE
 	$(call if_changed,policy)
 
 ifndef CONFIG_SECURITY_TOMOYO_INSECURE_BUILTIN_SETTING

usr/Makefile

@@ -22,7 +22,7 @@ cpio-data :=
 # If CONFIG_INITRAMFS_SOURCE is empty, generate a small initramfs with the
 # default contents.
 ifeq ($(ramfs-input),)
-ramfs-input := $(srctree)/$(src)/default_cpio_list
+ramfs-input := $(src)/default_cpio_list
 endif
 
 ifeq ($(words $(ramfs-input)),1)

usr/include/Makefile

@@ -78,7 +78,7 @@ quiet_cmd_hdrtest = HDRTEST $<
       cmd_hdrtest = \
 		$(CC) $(c_flags) -fsyntax-only -x c /dev/null \
 			$(if $(filter-out $(no-header-test), $*.h), -include $< -include $<); \
-		$(PERL) $(srctree)/$(src)/headers_check.pl $(obj) $(SRCARCH) $<; \
+		$(PERL) $(src)/headers_check.pl $(obj) $(SRCARCH) $<; \
 		touch $@
 
 $(obj)/%.hdrtest: $(obj)/%.h FORCE