[PATCH 0/2] lib,crypto: Add lz4 compressor module and crypto API

[Chanho Min]

This patchset is for supporting LZ4 compression and the crypto API using it.
This should be applied after the previous Kyungsik's "LZ4 compressed kernel"
patches - https://lkml.org/lkml/2013/3/5/181.

As shown in bellow result, the size of data is a little bit bigger but
compressing speed is faster under the enabled unaligned memory access.
We can use lz4 de/compression through crypto API as well. Also,
It will be useful for another potential user of lz4 compression.

lz4 Compression Benchmark:
Compiler: ARM gcc 4.6.4
ARMv7, 1 GHz based board
   Kernel: linux 3.4
   Uncompressed data Size: 101 MB
         Compressed Size  compression Speed
   LZO   72.1MB		  32.1MB/s, 33.0MB/s(UA)
   LZ4   75.1MB		  30.4MB/s, 35.9MB/s(UA)
   LZ4HC 59.8MB		   2.4MB/s,  2.5MB/s(UA)
- UA: Unaligned memory Access support
- Latest patch set for LZO applied

Chanho Min (2):
  lib: Add lz4 compressor module
  crypto: Add lz4 Cryptographic API

 crypto/Kconfig           |   16 ++
 crypto/Makefile          |    2 +
 crypto/lz4.c             |  105 +++++++++
 crypto/lz4hc.c           |  105 +++++++++
 include/linux/lz4.h      |   36 ++++
 lib/Kconfig              |    6 +
 lib/Makefile             |    2 +
 lib/lz4/Makefile         |    2 +
 lib/lz4/lz4_compress.c   |  443 +++++++++++++++++++++++++++++++++++++
 lib/lz4/lz4defs.h        |   66 +++++-
 lib/lz4/lz4hc_compress.c |  539 ++++++++++++++++++++++++++++++++++++++++++++++
 11 files changed, 1320 insertions(+), 2 deletions(-)
 create mode 100644 crypto/lz4.c
 create mode 100644 crypto/lz4hc.c
 create mode 100644 lib/lz4/lz4_compress.c
 create mode 100644 lib/lz4/lz4hc_compress.c

-- 
1.7.9.5
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