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init/Kconfig: add option to disable kernel compression

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Some ARC users say they can boot faster with without kernel compression.
This probably depends on things like the FLASH chip they use etc.

Until now, kernel compression can only be disabled by removing "select
HAVE_<compression>" lines from the architecture Kconfig.  So add the
Kconfig logic to permit disabling of kernel compression.

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christian Ruppert 2013-11-12 15:11:43 -08:00 committed by Linus Torvalds
parent bb67093796
commit 69f0554ec2
1 changed files with 7 additions and 1 deletions
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init/Kconfig
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@ -118,7 +118,6 @@ config HAVE_KERNEL_LZ4
choice
prompt "Kernel compression mode"
default KERNEL_GZIP
depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4
help
The linux kernel is a kind of self-extracting executable.
Several compression algorithms are available, which differ
@ -137,6 +136,13 @@ choice
If in doubt, select 'gzip'
config KERNEL_UNCOMPRESSED
bool "No compression"
help
No compression at all. The kernel is huge but the compression and
decompression times are zero.
This is usually not what you want.
config KERNEL_GZIP
bool "Gzip"
depends on HAVE_KERNEL_GZIP