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| author | Kyungsik Lee <kyungsik.lee@lge.com> | 2013-07-08 16:01:46 -0700 |
|---|---|---|
| committer | Simon Shields <keepcalm444@gmail.com> | 2016-06-12 21:20:10 +1000 |
| commit | ae59e751939d817c5dea1f07981d4b19c30c3a04 (patch) | |
| tree | 33ba16eeef78e5b71faff97aa3d841ec63d5619a /init | |
| parent | 3948a0f192249f3cb564a1b5010b4089cc685bee (diff) | |
| download | kernel_samsung_smdk4412-ae59e751939d817c5dea1f07981d4b19c30c3a04.tar.gz kernel_samsung_smdk4412-ae59e751939d817c5dea1f07981d4b19c30c3a04.tar.bz2 kernel_samsung_smdk4412-ae59e751939d817c5dea1f07981d4b19c30c3a04.zip | |
lib: add support for LZ4-compressed kernel
Add support for extracting LZ4-compressed kernel images, as well as
LZ4-compressed ramdisk images in the kernel boot process.
Signed-off-by: Kyungsik Lee <kyungsik.lee@lge.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Yann Collet <yann.collet.73@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Conflicts:
scripts/Makefile.lib
Change-Id: I2ad2607d9edf0f41c7e7a621f1da72174b142e2d
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig index ae99e63f9c6..ac4538075e2 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -130,10 +130,13 @@ config HAVE_KERNEL_XZ config HAVE_KERNEL_LZO bool +config HAVE_KERNEL_LZ4 + bool + 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 + 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 @@ -201,6 +204,18 @@ config KERNEL_LZO size is about 10% bigger than gzip; however its speed (both compression and decompression) is the fastest. +config KERNEL_LZ4 + bool "LZ4" + depends on HAVE_KERNEL_LZ4 + help + LZ4 is an LZ77-type compressor with a fixed, byte-oriented encoding. + A preliminary version of LZ4 de/compression tool is available at + <https://code.google.com/p/lz4/>. + + Its compression ratio is worse than LZO. The size of the kernel + is about 8% bigger than LZO. But the decompression speed is + faster than LZO. + endchoice config DEFAULT_HOSTNAME |