linux/arch
Masahiro Yamada 2a86f66121 kbuild: use KBUILD_DEFCONFIG as the fallback for DEFCONFIG_LIST
Most of the Kconfig commands (except defconfig and all*config) read
the .config file as a base set of CONFIG options.

When it does not exist, the files in DEFCONFIG_LIST are searched in
this order and loaded if found.

I do not see much sense in the last two lines in DEFCONFIG_LIST.

[1] ARCH_DEFCONFIG

The entry for DEFCONFIG_LIST is guarded by 'depends on !UML'. So, the
ARCH_DEFCONFIG definition in arch/x86/um/Kconfig is meaningless.

arch/{sh,sparc,x86}/Kconfig define ARCH_DEFCONFIG depending on 32 or
64 bit variant symbols. This is a little bit strange; ARCH_DEFCONFIG
should be a fixed string because the base config file is loaded before
the symbol evaluation stage.

Using KBUILD_DEFCONFIG makes more sense because it is fixed before
Kconfig is invoked. Fortunately, arch/{sh,sparc,x86}/Makefile define it
in the same way, and it works as expected. Hence, replace ARCH_DEFCONFIG
with "arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)".

[2] arch/$(ARCH)/defconfig

This file path is no longer valid. The defconfig files are always located
in the arch configs/ directories.

  $ find arch -name defconfig | sort
  arch/alpha/configs/defconfig
  arch/arm64/configs/defconfig
  arch/csky/configs/defconfig
  arch/nds32/configs/defconfig
  arch/riscv/configs/defconfig
  arch/s390/configs/defconfig
  arch/unicore32/configs/defconfig

The path arch/*/configs/defconfig is already covered by
"arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)". So, this file path is
not necessary.

I moved the default KBUILD_DEFCONFIG to the top Makefile. Otherwise,
the 7 architectures listed above would end up with endless loop of
syncconfig.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-03-03 20:49:21 +09:00
..
alpha Kbuild updates for v5.6 (2nd) 2020-02-09 16:05:50 -08:00
arc arc: mm: add p?d_leaf() definitions 2020-02-04 03:05:24 +00:00
arm More bugfixes, including a few remaining "make W=1" issues such 2020-03-01 15:16:35 -06:00
arm64 More bugfixes, including a few remaining "make W=1" issues such 2020-03-01 15:16:35 -06:00
c6x Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 10:07:09 -08:00
csky csky: Replace <linux/clk-provider.h> by <linux/of_clk.h> 2020-02-23 12:48:55 +08:00
h8300 Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 10:07:09 -08:00
hexagon Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 10:07:09 -08:00
ia64 proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
m68k Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu 2020-02-06 08:13:23 +00:00
microblaze Microblaze patches for 5.6-rc1 2020-02-04 11:58:07 +00:00
mips MIPS: ingenic: DTS: Fix watchdog nodes 2020-02-19 10:52:35 -08:00
nds32 TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
nios2 TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
openrisc TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
parisc Merge branch 'parisc-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2020-02-05 07:29:40 +00:00
powerpc powerpc/entry: Fix an #if which should be an #ifdef in entry_32.S 2020-02-19 10:35:22 +11:00
riscv riscv: adjust the indent 2020-02-24 13:12:53 -08:00
s390 s390/qdio: fill SBALEs with absolute addresses 2020-02-19 17:26:32 +01:00
sh kbuild: use KBUILD_DEFCONFIG as the fallback for DEFCONFIG_LIST 2020-03-03 20:49:21 +09:00
sparc kbuild: use KBUILD_DEFCONFIG as the fallback for DEFCONFIG_LIST 2020-03-03 20:49:21 +09:00
um proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
unicore32 MPX requires recompiling applications, which requires compiler support. 2020-01-30 16:11:50 -08:00
x86 kbuild: use KBUILD_DEFCONFIG as the fallback for DEFCONFIG_LIST 2020-03-03 20:49:21 +09:00
xtensa Xtensa updates for v5.6: 2020-02-07 12:22:29 -08:00
.gitignore
Kconfig asm-generic/tlb: provide MMU_GATHER_TABLE_FREE 2020-02-04 03:05:26 +00:00