linux/arch
Masahiro Yamada 630f289b71 asm-generic: make more kernel-space headers mandatory
Change a header to mandatory-y if both of the following are met:

[1] At least one architecture (except um) specifies it as generic-y in
    arch/*/include/asm/Kbuild

[2] Every architecture (except um) either has its own implementation
    (arch/*/include/asm/*.h) or specifies it as generic-y in
    arch/*/include/asm/Kbuild

This commit was generated by the following shell script.

----------------------------------->8-----------------------------------

arches=$(cd arch; ls -1 | sed -e '/Kconfig/d' -e '/um/d')

tmpfile=$(mktemp)

grep "^mandatory-y +=" include/asm-generic/Kbuild > $tmpfile

find arch -path 'arch/*/include/asm/Kbuild' |
	xargs sed -n 's/^generic-y += \(.*\)/\1/p' | sort -u |
while read header
do
	mandatory=yes

	for arch in $arches
	do
		if ! grep -q "generic-y += $header" arch/$arch/include/asm/Kbuild &&
			! [ -f arch/$arch/include/asm/$header ]; then
			mandatory=no
			break
		fi
	done

	if [ "$mandatory" = yes ]; then
		echo "mandatory-y += $header" >> $tmpfile

		for arch in $arches
		do
			sed -i "/generic-y += $header/d" arch/$arch/include/asm/Kbuild
		done
	fi

done

sed -i '/^mandatory-y +=/d' include/asm-generic/Kbuild

LANG=C sort $tmpfile >> include/asm-generic/Kbuild

----------------------------------->8-----------------------------------

One obvious benefit is the diff stat:

 25 files changed, 52 insertions(+), 557 deletions(-)

It is tedious to list generic-y for each arch that needs it.

So, mandatory-y works like a fallback default (by just wrapping
asm-generic one) when arch does not have a specific header
implementation.

See the following commits:

def3f7cefe
a1b39bae16

It is tedious to convert headers one by one, so I processed by a shell
script.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Link: http://lkml.kernel.org/r/20200210175452.5030-1-masahiroy@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-02 09:35:25 -07:00
..
alpha asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
arc asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
arm asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
arm64 asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
c6x asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
csky asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
h8300 asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
hexagon asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
ia64 asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
m68k asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
microblaze asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
mips asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
nds32 asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
nios2 asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
openrisc asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
parisc asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
powerpc asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
riscv asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
s390 asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
sh asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
sparc asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
um um: reject unsupported coalescing params 2020-03-06 22:45:54 -08:00
unicore32 asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
x86 asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
xtensa asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
.gitignore
Kconfig NOHZ full updates: 2020-03-30 18:29:05 -07:00