GitHub PushEvent at 2014-04-29 12:54:12
Repository: Samsung_STE_Kernel
Actor: zwliew
Payload: {"shas":[["442191d2c2ab702fe54386e6d72d1535e0c47680","f29209e176deba8cfd2e79bb6b9166c7d43dc10b@lge.com","lib: add lz4 compressor module\n\nThis patchset is for supporting LZ4 compression and the crypto API using\nit.\n\nAs shown below, the size of data is a little bit bigger but compressing\nspeed is faster under the enabled unaligned memory access.  We can use\nlz4 de/compression through crypto API as well.  Also, It will be useful\nfor another potential user of lz4 compression.\n\nlz4 Compression Benchmark:\nCompiler: ARM gcc 4.6.4\nARMv7, 1 GHz based board\n   Kernel: linux 3.4\n   Uncompressed data Size: 101 MB\n         Compressed Size  compression Speed\n   LZO   72.1MB\t\t  32.1MB/s, 33.0MB/s(UA)\n   LZ4   75.1MB\t\t  30.4MB/s, 35.9MB/s(UA)\n   LZ4HC 59.8MB\t\t   2.4MB/s,  2.5MB/s(UA)\n- UA: Unaligned memory Access support\n- Latest patch set for LZO applied\n\nThis patch:\n\nAdd support for LZ4 compression in the Linux Kernel.  LZ4 Compression APIs\nfor kernel are based on LZ4 implementation by Yann Collet and were changed\nfor kernel coding style.\n\nLZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html\nLZ4 source repository : http://code.google.com/p/lz4/\nsvn revision : r90\n\nTwo APIs are added:\n\nlz4_compress() support basic lz4 compression whereas lz4hc_compress()\nsupport high compression or CPU performance get lower but compression\nratio get higher.  Also, we require the pre-allocated working memory with\nthe defined size and destination buffer must be allocated with the size of\nlz4_compressbound.\n\n[akpm@linux-foundation.org: make lz4_compresshcctx() static]\nSigned-off-by: Chanho Min <chanho.min@lge.com>\nCc: \"Darrick J. Wong\" <djwong@us.ibm.com>\nCc: Bob Pearson <rpearson@systemfabricworks.com>\nCc: Richard Weinberger <richard@nod.at>\nCc: Herbert Xu <herbert@gondor.hengli.com.au>\nCc: Yann Collet <yann.collet.73@gmail.com>\nCc: Kyungsik Lee <kyungsik.lee@lge.com>\nSigned-off-by: Andrew Morton <akpm@linux-foundation.org>\nSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>","Chanho Min",true]],"size":1,"ref":"refs/heads/cm-11.0","head":"442191d2c2ab702fe54386e6d72d1535e0c47680"}