On Sun, Mar 14, 2021 at 04:48:34AM +0900, Masahiro Yamada wrote: > allnoconfig_y is a bad hack that sets a symbol to 'y' by allnoconfig. > > allnoconfig does not mean a minimum set of CONFIG options because a > bunch of prompts are hidden by 'if EMBEDDED' or 'if EXPERT', but I do > not like to do a workaround this way. > > Use the pre-existing feature, KCONFIG_ALLCONFIG, to provide a one > liner config fragment. CONFIG_EMBEDDED=y is still forced under > allnoconfig. > > No change in the .config file produced by 'make tinyconfig'. > > The output of 'make allnoconfig' will be changed; we will get > CONFIG_EMBEDDED=n because allnoconfig literally sets all symbols to n. > > Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> With this patch in place, mips:allnoconfig fails to build with the following error. Error log: WARNING: modpost: vmlinux.o(.text+0x9c70): Section mismatch in reference from the function reserve_exception_space() to the function .meminit.text:memblock_reserve() The function reserve_exception_space() references the function __meminit memblock_reserve(). This is often because reserve_exception_space lacks a __meminit annotation or the annotation of memblock_reserve is wrong. ERROR: modpost: Section mismatches detected. Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them. make[2]: *** [scripts/Makefile.modpost:62: vmlinux.symvers] Error 1 make[2]: *** Deleting file 'vmlinux.symvers' make[1]: *** [Makefile:1292: vmlinux] Error 2 make: *** [Makefile:222: __sub-make] Error 2 Guenter > --- > > init/Kconfig | 1 - > kernel/configs/tiny-base.config | 1 + > scripts/kconfig/Makefile | 3 ++- > 3 files changed, 3 insertions(+), 2 deletions(-) > create mode 100644 kernel/configs/tiny-base.config > > diff --git a/init/Kconfig b/init/Kconfig > index 46b87ad73f6a..beb8314fdf96 100644 > --- a/init/Kconfig > +++ b/init/Kconfig > @@ -1769,7 +1769,6 @@ config DEBUG_RSEQ > > config EMBEDDED > bool "Embedded system" > - option allnoconfig_y > select EXPERT > help > This option should be enabled if compiling the kernel for > diff --git a/kernel/configs/tiny-base.config b/kernel/configs/tiny-base.config > new file mode 100644 > index 000000000000..2f0e6bf6db2c > --- /dev/null > +++ b/kernel/configs/tiny-base.config > @@ -0,0 +1 @@ > +CONFIG_EMBEDDED=y > diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile > index 7df3c0e4c52e..46f2465177f0 100644 > --- a/scripts/kconfig/Makefile > +++ b/scripts/kconfig/Makefile > @@ -102,7 +102,8 @@ configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/c > > PHONY += tinyconfig > tinyconfig: > - $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config > + $(Q)KCONFIG_ALLCONFIG=kernel/configs/tiny-base.config $(MAKE) -f $(srctree)/Makefile allnoconfig > + $(Q)$(MAKE) -f $(srctree)/Makefile tiny.config > > # CHECK: -o cache_dir=<path> working? > PHONY += testconfig > -- > 2.27.0 >
