diff options
author | Jens Axboe <jens.axboe@oracle.com> | 2010-02-22 13:48:51 +0100 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2010-02-22 13:48:51 +0100 |
commit | f11cbd74c5ff3614f6390b4de67a6ffdc614c378 (patch) | |
tree | 6a30920ade9eeaac5bf6d6263b5d09712e882eb0 /usr | |
parent | 429c42c9d246f5bda868495c09974312a0177328 (diff) | |
parent | aea187c46f7d03ce985e55eb1398d0776a15b928 (diff) |
Merge branch 'master' into for-2.6.34
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 |