[PATCH v3 -next 0/5] Add support for LZ4-compressed kernel


Kyungsik Lee <kyungsik.lee@...>
 

Hi,

This is the third version. In this version, Some codes are fixed
and more description and note are added. I would like to thank David Sterba
for his review.

The Last patch[5/5] of the patch set is for making x86 and arm default to
LZ4-compressed for testing the LZ4 code in the linux-next.
It was requested by Andrew Morton in the patch set v2.

Currently, A preliminary version of LZ4 de/compression tool is supported.
However, It is expected that we will have a tool with more features
once its format is finished.

LZ4 compression tool is available at
http://code.google.com/p/lz4/source/checkout.

Thanks,
Kyungsik


Change log: v2
- Clean up code
- Enable unaligned access for ARM v6 and above with
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
- Add lz4_decompress() for faster decompression with
uncompressed output size
- Use lz4_decompress() for LZ4-compressed kernel during
boot-process
- Apply -Os to decompress.o to improve decompress
performance during boot-up process
Change log: v3
- Prevent double evaluation by using an inline function
- Add LZ4 description and note for uncompressed chunk size issue
- Fix indentation error


Kyungsik Lee (5):
decompressor: Add LZ4 decompressor module
lib: Add support for LZ4-compressed kernel
arm: Add support for LZ4-compressed kernel
x86: Add support for LZ4-compressed kernel
Kconfig: Make x86 and arm kernels default to the LZ4-compressed

arch/arm/Kconfig | 1 +
arch/arm/boot/compressed/.gitignore | 1 +
arch/arm/boot/compressed/Makefile | 6 +-
arch/arm/boot/compressed/decompress.c | 4 +
arch/arm/boot/compressed/piggy.lz4.S | 6 +
arch/x86/Kconfig | 1 +
arch/x86/boot/compressed/Makefile | 5 +-
arch/x86/boot/compressed/misc.c | 4 +
include/linux/decompress/unlz4.h | 10 ++
include/linux/lz4.h | 51 ++++++
init/Kconfig | 19 +-
lib/Kconfig | 7 +
lib/Makefile | 2 +
lib/decompress.c | 5 +
lib/decompress_unlz4.c | 187 +++++++++++++++++++
lib/lz4/Makefile | 1 +
lib/lz4/lz4_decompress.c | 326 ++++++++++++++++++++++++++++++++++
lib/lz4/lz4defs.h | 94 ++++++++++
scripts/Makefile.lib | 5 +
usr/Kconfig | 9 +
20 files changed, 740 insertions(+), 4 deletions(-)
create mode 100644 arch/arm/boot/compressed/piggy.lz4.S
create mode 100644 include/linux/decompress/unlz4.h
create mode 100644 include/linux/lz4.h
create mode 100644 lib/decompress_unlz4.c
create mode 100644 lib/lz4/Makefile
create mode 100644 lib/lz4/lz4_decompress.c
create mode 100644 lib/lz4/lz4defs.h

--
1.8.1.1

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