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initramfs: select builtin initram compression algorithm on KConfig instead of Makefile

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Move the current builtin initram compression algorithm selection from
the Makefile into the INITRAMFS_COMPRESSION variable.  This makes
deciding algorithm precedence easier and would allow for overrides if
new algorithms want to be tested.

Link: http://lkml.kernel.org/r/57EAD769.1090401@klondike.es
Signed-off-by: Francisco Blas Izquierdo Riera (klondike) <klondike@klondike.es>
Cc: P J P <ppandit@redhat.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Francisco Blas Izquierdo Riera (klondike)
2016-12-14 15:06:01 -08:00
committed by Linus Torvalds
parent 34aaff40b4
commit 35e669e1a2
2 changed files with 11 additions and 19 deletions
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10
usr/Kconfig
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@@ -98,3 +98,13 @@ config RD_LZ4
help
Support loading of a LZ4 encoded initial ramdisk or cpio buffer
If unsure, say N.
config INITRAMFS_COMPRESSION
string
default ".gz" if RD_GZIP
default ".lz4" if RD_LZ4
default ".lzo" if RD_LZO
default ".xz" if RD_XZ
default ".lzma" if RD_LZMA
default ".bz2" if RD_BZIP2
default ""