diff options
author | Tejun Heo <tj@kernel.org> | 2010-02-02 14:38:15 +0900 |
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committer | Tejun Heo <tj@kernel.org> | 2010-02-02 14:38:15 +0900 |
commit | ab386128f20c44c458a90039ab1bdc265ac474c9 (patch) | |
tree | 2ad188744922b1bb951fd10ff50dc04c83acce22 /usr | |
parent | dbfc196a3cc1a2514ad0737a82f764de23bd65e6 (diff) | |
parent | ab658321f32770b903a4426e2a6fae0392757755 (diff) |
Merge branch 'master' into percpu
Diffstat (limited to 'usr')
-rw-r--r-- | usr/Kconfig | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/usr/Kconfig b/usr/Kconfig index 1c3039f2890..e2721f5a350 100644 --- a/usr/Kconfig +++ b/usr/Kconfig @@ -72,6 +72,15 @@ config RD_LZMA Support loading of a LZMA encoded initial ramdisk or cpio buffer If unsure, say N. +config RD_LZO + bool "Support initial ramdisks compressed using LZO" if EMBEDDED + default !EMBEDDED + depends on BLK_DEV_INITRD + select DECOMPRESS_LZO + help + Support loading of a LZO encoded initial ramdisk or cpio buffer + If unsure, say N. + choice prompt "Built-in initramfs compression mode" if INITRAMFS_SOURCE!="" help @@ -108,16 +117,15 @@ config INITRAMFS_COMPRESSION_GZIP bool "Gzip" depends on RD_GZIP help - The old and tried gzip compression. Its compression ratio is - the poorest among the 3 choices; however its speed (both - compression and decompression) is the fastest. + The old and tried gzip compression. It provides a good balance + between compression ratio and decompression speed. config INITRAMFS_COMPRESSION_BZIP2 bool "Bzip2" depends on RD_BZIP2 help Its compression ratio and speed is intermediate. - Decompression speed is slowest among the three. The initramfs + Decompression speed is slowest among the four. The initramfs size is about 10% smaller with bzip2, in comparison to gzip. Bzip2 uses a large amount of memory. For modern kernels you will need at least 8MB RAM or more for booting. @@ -128,7 +136,15 @@ config INITRAMFS_COMPRESSION_LZMA help The most recent compression algorithm. Its ratio is best, decompression speed is between the other - two. Compression is slowest. The initramfs size is about 33% + three. Compression is slowest. The initramfs size is about 33% smaller with LZMA in comparison to gzip. +config INITRAMFS_COMPRESSION_LZO + bool "LZO" + depends on RD_LZO + help + Its compression ratio is the poorest among the four. The kernel + size is about about 10% bigger than gzip; however its speed + (both compression and decompression) is the fastest. + endchoice |