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authorEugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>2020-03-16 14:25:19 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-04-13 11:44:59 +0300
commitfc145ab2e915341427bb7b453c377531e07b57a6 (patch)
tree67a2c399fcb80636c1ac6a29f458ea799a5feacc /usr
parent236c445eb3529aa7c976f8812513c3cb26d77e27 (diff)
downloadlinux-fc145ab2e915341427bb7b453c377531e07b57a6.tar.xz
initramfs: restore default compression behavior
[ Upstream commit 785d74ec3bbf26ac7f6e92e6e96a259aec0f107a ] Even though INITRAMFS_SOURCE kconfig option isn't set in most of defconfigs it is used (set) extensively by various build systems. Commit f26661e12765 ("initramfs: make initramfs compression choice non-optional") has changed default compression mode. Previously we compress initramfs using available compression algorithm. Now we don't use any compression at all by default. It significantly increases the image size in case of build system chooses embedded initramfs. Initially I faced with this issue while using buildroot. As of today it's not possible to set preferred compression mode in target defconfig as this option depends on INITRAMFS_SOURCE being set. Modification of all build systems either doesn't look like good option. Let's instead rewrite initramfs compression mode choices list the way that "INITRAMFS_COMPRESSION_NONE" will be the last option in the list. In that case it will be chosen only if all other options (which implements any compression) are not available. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'usr')
-rw-r--r--usr/Kconfig22
1 files changed, 11 insertions, 11 deletions
diff --git a/usr/Kconfig b/usr/Kconfig
index 43658b8a975e..8b4826de1189 100644
--- a/usr/Kconfig
+++ b/usr/Kconfig
@@ -131,17 +131,6 @@ choice
If in doubt, select 'None'
-config INITRAMFS_COMPRESSION_NONE
- bool "None"
- help
- Do not compress the built-in initramfs at all. This may sound wasteful
- in space, but, you should be aware that the built-in initramfs will be
- compressed at a later stage anyways along with the rest of the kernel,
- on those architectures that support this. However, not compressing the
- initramfs may lead to slightly higher memory consumption during a
- short time at boot, while both the cpio image and the unpacked
- filesystem image will be present in memory simultaneously
-
config INITRAMFS_COMPRESSION_GZIP
bool "Gzip"
depends on RD_GZIP
@@ -214,6 +203,17 @@ config INITRAMFS_COMPRESSION_LZ4
If you choose this, keep in mind that most distros don't provide lz4
by default which could cause a build failure.
+config INITRAMFS_COMPRESSION_NONE
+ bool "None"
+ help
+ Do not compress the built-in initramfs at all. This may sound wasteful
+ in space, but, you should be aware that the built-in initramfs will be
+ compressed at a later stage anyways along with the rest of the kernel,
+ on those architectures that support this. However, not compressing the
+ initramfs may lead to slightly higher memory consumption during a
+ short time at boot, while both the cpio image and the unpacked
+ filesystem image will be present in memory simultaneously
+
endchoice
config INITRAMFS_COMPRESSION