mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 06:46:38 +07:00
8b975bd3f9
This commit updates the kernel LZO code to the current upsteam version which features a significant speed improvement - benchmarking the Calgary and Silesia test corpora typically shows a doubled performance in both compression and decompression on modern i386/x86_64/powerpc machines. Signed-off-by: Markus F.X.J. Oberhumer <markus@oberhumer.com>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
#ifndef __LZO_H__
|
|
#define __LZO_H__
|
|
/*
|
|
* LZO Public Kernel Interface
|
|
* A mini subset of the LZO real-time data compression library
|
|
*
|
|
* Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@oberhumer.com>
|
|
*
|
|
* The full LZO package can be found at:
|
|
* http://www.oberhumer.com/opensource/lzo/
|
|
*
|
|
* Changed for Linux kernel use by:
|
|
* Nitin Gupta <nitingupta910@gmail.com>
|
|
* Richard Purdie <rpurdie@openedhand.com>
|
|
*/
|
|
|
|
#define LZO1X_1_MEM_COMPRESS (8192 * sizeof(unsigned short))
|
|
#define LZO1X_MEM_COMPRESS LZO1X_1_MEM_COMPRESS
|
|
|
|
#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3)
|
|
|
|
/* This requires 'wrkmem' of size LZO1X_1_MEM_COMPRESS */
|
|
int lzo1x_1_compress(const unsigned char *src, size_t src_len,
|
|
unsigned char *dst, size_t *dst_len, void *wrkmem);
|
|
|
|
/* safe decompression with overrun testing */
|
|
int lzo1x_decompress_safe(const unsigned char *src, size_t src_len,
|
|
unsigned char *dst, size_t *dst_len);
|
|
|
|
/*
|
|
* Return values (< 0 = Error)
|
|
*/
|
|
#define LZO_E_OK 0
|
|
#define LZO_E_ERROR (-1)
|
|
#define LZO_E_OUT_OF_MEMORY (-2)
|
|
#define LZO_E_NOT_COMPRESSIBLE (-3)
|
|
#define LZO_E_INPUT_OVERRUN (-4)
|
|
#define LZO_E_OUTPUT_OVERRUN (-5)
|
|
#define LZO_E_LOOKBEHIND_OVERRUN (-6)
|
|
#define LZO_E_EOF_NOT_FOUND (-7)
|
|
#define LZO_E_INPUT_NOT_CONSUMED (-8)
|
|
#define LZO_E_NOT_YET_IMPLEMENTED (-9)
|
|
#define LZO_E_INVALID_ARGUMENT (-10)
|
|
|
|
#endif
|