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authorAlain Knaff <alain@knaff.lu>2009-01-04 22:46:17 +0100
committerH. Peter Anvin <hpa@zytor.com>2009-01-05 00:53:35 +0100
commit30d65dbfe3add7f010a075991dc0bfeaebb7d9e1 (patch)
treec60ce6748eea43d1e74d96ef03990b1e23f33b1d /drivers/block/Kconfig
parentbzip2/lzma: library support for gzip, bzip2 and lzma decompression (diff)
downloadlinux-30d65dbfe3add7f010a075991dc0bfeaebb7d9e1.tar.xz
linux-30d65dbfe3add7f010a075991dc0bfeaebb7d9e1.zip
bzip2/lzma: config and initramfs support for bzip2/lzma decompression
Impact: New code for initramfs decompression, new features This is the second part of the bzip2/lzma patch The bzip patch is based on an idea by Christian Ludwig, includes support for compressing the kernel with bzip2 or lzma rather than gzip. Both compressors give smaller sizes than gzip. Lzma's decompresses faster than bzip2. It also supports ramdisks and initramfs' compressed using these two compressors. The functionality has been successfully used for a couple of years by the udpcast project This version applies to "tip" kernel 2.6.28 This part contains: - support for new compressions (bzip2 and lzma) in initramfs and old-style ramdisk - config dialog for kernel compression (but new kernel compressions not yet supported) Signed-off-by: Alain Knaff <alain@knaff.lu> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'drivers/block/Kconfig')
-rw-r--r--drivers/block/Kconfig25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 0344a8a8321d..795594442428 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -358,6 +358,31 @@ config BLK_DEV_XIP
will prevent RAM block device backing store memory from being
allocated from highmem (only a problem for highmem systems).
+config RD_BZIP2
+ bool "Initial ramdisk compressed using bzip2"
+ default n
+ depends on BLK_DEV_INITRD=y
+ help
+ Support loading of a bzip2 encoded initial ramdisk or cpio buffer
+ If unsure, say N.
+
+config RD_LZMA
+ bool "Initial ramdisk compressed using lzma"
+ default n
+ depends on BLK_DEV_INITRD=y
+ help
+ Support loading of a lzma encoded initial ramdisk or cpio buffer
+ If unsure, say N.
+
+config RD_GZIP
+ bool "Initial ramdisk compressed using gzip"
+ default y
+ depends on BLK_DEV_INITRD=y
+ select ZLIB_INFLATE
+ help
+ Support loading of a gzip encoded initial ramdisk or cpio buffer.
+ If unsure, say Y.
+
config CDROM_PKTCDVD
tristate "Packet writing on CD/DVD media"
depends on !UML