cregit-Linux how code gets into the kernel

Release 4.7 include/linux/lz4.h

Directory: include/linux
#ifndef __LZ4_H__

#define __LZ4_H__
/*
 * LZ4 Kernel Interface
 *
 * Copyright (C) 2013, LG Electronics, Kyungsik Lee <kyungsik.lee@lge.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#define LZ4_MEM_COMPRESS	(16384)

#define LZ4HC_MEM_COMPRESS	(262144 + (2 * sizeof(unsigned char *)))

/*
 * lz4_compressbound()
 * Provides the maximum size that LZ4 may output in a "worst case" scenario
 * (input data not compressible)
 */

static inline size_t lz4_compressbound(size_t isize) { return isize + (isize / 255) + 16; }

Contributors

PersonTokensPropCommitsCommitProp
kyungsik leekyungsik lee21100.00%1100.00%
Total21100.00%1100.00%

/* * lz4_compress() * src : source address of the original data * src_len : size of the original data * dst : output buffer address of the compressed data * This requires 'dst' of size LZ4_COMPRESSBOUND. * dst_len : is the output size, which is returned after compress done * workmem : address of the working memory. * This requires 'workmem' of size LZ4_MEM_COMPRESS. * return : Success if return 0 * Error if return (< 0) * note : Destination buffer and workmem must be already allocated with * the defined size. */ int lz4_compress(const unsigned char *src, size_t src_len, unsigned char *dst, size_t *dst_len, void *wrkmem); /* * lz4hc_compress() * src : source address of the original data * src_len : size of the original data * dst : output buffer address of the compressed data * This requires 'dst' of size LZ4_COMPRESSBOUND. * dst_len : is the output size, which is returned after compress done * workmem : address of the working memory. * This requires 'workmem' of size LZ4HC_MEM_COMPRESS. * return : Success if return 0 * Error if return (< 0) * note : Destination buffer and workmem must be already allocated with * the defined size. */ int lz4hc_compress(const unsigned char *src, size_t src_len, unsigned char *dst, size_t *dst_len, void *wrkmem); /* * lz4_decompress() * src : source address of the compressed data * src_len : is the input size, whcih is returned after decompress done * dest : output buffer address of the decompressed data * actual_dest_len: is the size of uncompressed data, supposing it's known * return : Success if return 0 * Error if return (< 0) * note : Destination buffer must be already allocated. * slightly faster than lz4_decompress_unknownoutputsize() */ int lz4_decompress(const unsigned char *src, size_t *src_len, unsigned char *dest, size_t actual_dest_len); /* * lz4_decompress_unknownoutputsize() * src : source address of the compressed data * src_len : is the input size, therefore the compressed size * dest : output buffer address of the decompressed data * dest_len: is the max size of the destination buffer, which is * returned with actual size of decompressed data after * decompress done * return : Success if return 0 * Error if return (< 0) * note : Destination buffer must be already allocated. */ int lz4_decompress_unknownoutputsize(const unsigned char *src, size_t src_len, unsigned char *dest, size_t *dest_len); #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
kyungsik leekyungsik lee7352.52%125.00%
chanho minchanho min6043.17%125.00%
sergey senozhatskysergey senozhatsky42.88%125.00%
bongkyu kimbongkyu kim21.44%125.00%
Total139100.00%4100.00%
Directory: include/linux
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