diff --git a/Makefile b/Makefile index e21bf66af6fd..23cd62a5ff05 100644 --- a/Makefile +++ b/Makefile @@ -1552,7 +1552,6 @@ help: @echo ' mrproper - Remove all generated files + config + various backup files' @echo ' distclean - mrproper + remove editor backup and patch files' @echo '' - @echo 'Configuration targets:' @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help @echo '' @echo 'Other generic targets:' diff --git a/arch/x86/Makefile b/arch/x86/Makefile index fdc2e3abd615..c4b2a8a19fc8 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -335,9 +335,5 @@ define archhelp echo ' bzdisk/fdimage*/hdimage/isoimage also accept:' echo ' FDARGS="..." arguments for the booted kernel' echo ' FDINITRD=file initrd for the booted kernel' - echo '' - echo ' kvm_guest.config - Enable Kconfig items for running this kernel as a KVM guest' - echo ' xen.config - Enable Kconfig items for running this kernel as a Xen guest' - echo ' x86_debug.config - Enable tip tree debugging options for testing' endef diff --git a/kernel/configs/kvm_guest.config b/kernel/configs/kvm_guest.config index 208481d91090..d0877063d925 100644 --- a/kernel/configs/kvm_guest.config +++ b/kernel/configs/kvm_guest.config @@ -1,3 +1,4 @@ +# Help: Bootable as a KVM guest CONFIG_NET=y CONFIG_NET_CORE=y CONFIG_NETDEVICES=y diff --git a/kernel/configs/x86_debug.config b/kernel/configs/x86_debug.config index 6fac5b405334..35f48671b8d5 100644 --- a/kernel/configs/x86_debug.config +++ b/kernel/configs/x86_debug.config @@ -1,3 +1,4 @@ +# Help: Debugging options for tip tree testing CONFIG_X86_DEBUG_FPU=y CONFIG_LOCK_STAT=y CONFIG_DEBUG_VM=y diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config index 436f806aa1ed..6878b9a49be8 100644 --- a/kernel/configs/xen.config +++ b/kernel/configs/xen.config @@ -1,3 +1,5 @@ +# Help: Bootable as a Xen guest +# # global stuff - these enable us to allow some # of the not so generic stuff below for xen CONFIG_PARAVIRT=y diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile index af1c96198f49..e72c5ee659a9 100644 --- a/scripts/kconfig/Makefile +++ b/scripts/kconfig/Makefile @@ -93,11 +93,13 @@ endif %_defconfig: $(obj)/conf $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) -configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@) +configfiles = $(wildcard $(srctree)/kernel/configs/$(1) $(srctree)/arch/$(SRCARCH)/configs/$(1)) +all-config-fragments = $(call configfiles,*) +config-fragments = $(call configfiles,$@) %.config: $(obj)/conf - $(if $(call configfiles),, $(error No configuration exists for this target on this architecture)) - $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles) + $(if $(config-fragments),, $(error $@ fragment does not exists on this architecture)) + $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(config-fragments) $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig PHONY += tinyconfig @@ -115,6 +117,7 @@ clean-files += tests/.cache # Help text used by make help help: + @echo 'Configuration targets:' @echo ' config - Update current config utilising a line-oriented program' @echo ' nconfig - Update current config utilising a ncurses menu based program' @echo ' menuconfig - Update current config utilising a menu based program' @@ -141,6 +144,12 @@ help: @echo ' default value without prompting' @echo ' tinyconfig - Configure the tiniest possible kernel' @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)' + @echo '' + @echo 'Configuration topic targets:' + @$(foreach f, $(all-config-fragments), \ + if help=$$(grep -m1 '^# Help: ' $(f)); then \ + printf ' %-25s - %s\n' '$(notdir $(f))' "$${help#*: }"; \ + fi;) # =========================================================================== # object files used by all kconfig flavours