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authorLinus Torvalds <torvalds@linux-foundation.org>2013-03-01 04:45:52 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2013-03-01 04:45:52 (GMT)
commitb0af9cd9aab60ceb17d3ebabb9fdf4ff0a99cf50 (patch)
tree15c56f48f249c839d4049fdbd71f1bcce14bdd65 /include
parent1e5005979e45337dab9e2c2e4a75ebd71168c004 (diff)
parent0ec7382036922be063b515b2a3f1d6f7a607392c (diff)
downloadlinux-b0af9cd9aab60ceb17d3ebabb9fdf4ff0a99cf50.tar.xz
Merge tag 'lzo-update-signature-20130226' of git://github.com/markus-oberhumer/linux
Pull LZO compression update from Markus Oberhumer: "Summary: ======== Update the Linux kernel LZO compression and decompression code to the current upstream version which features significant performance improvements on modern machines. Some *synthetic* benchmarks: ============================ x86_64 (Sandy Bridge), gcc-4.6 -O3, Silesia test corpus, 256 kB block-size: compression speed decompression speed LZO-2005 : 150 MB/sec 468 MB/sec LZO-2012 : 434 MB/sec 1210 MB/sec i386 (Sandy Bridge), gcc-4.6 -O3, Silesia test corpus, 256 kB block-size: compression speed decompression speed LZO-2005 : 143 MB/sec 409 MB/sec LZO-2012 : 372 MB/sec 1121 MB/sec armv7 (Cortex-A9), Linaro gcc-4.6 -O3, Silesia test corpus, 256 kB block-size: compression speed decompression speed LZO-2005 : 27 MB/sec 84 MB/sec LZO-2012 : 44 MB/sec 117 MB/sec **LZO-2013-UA : 47 MB/sec 167 MB/sec Legend: LZO-2005 : LZO version in current 3.8 kernel (which is based on the LZO 2.02 release from 2005) LZO-2012 : updated LZO version available in linux-next **LZO-2013-UA : updated LZO version available in linux-next plus experimental ARM Unaligned Access patch. This needs approval from some ARM maintainer ist NOT YET INCLUDED." Andrew Morton <akpm@linux-foundation.org> acks it and says: "There's a new LZ4 on the block which is even faster than the sped-up LZO, but various filesystems and things use LZO" * tag 'lzo-update-signature-20130226' of git://github.com/markus-oberhumer/linux: crypto: testmgr - update LZO compression test vectors lib/lzo: Update LZO compression to current upstream version lib/lzo: Rename lzo1x_decompress.c to lzo1x_decompress_safe.c
Diffstat (limited to 'include')
-rw-r--r--include/linux/lzo.h15
1 files changed, 8 insertions, 7 deletions
diff --git a/include/linux/lzo.h b/include/linux/lzo.h
index d793497..a0848d93 100644
--- a/include/linux/lzo.h
+++ b/include/linux/lzo.h
@@ -4,28 +4,28 @@
* LZO Public Kernel Interface
* A mini subset of the LZO real-time data compression library
*
- * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
+ * 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 kernel use by:
+ * Changed for Linux kernel use by:
* Nitin Gupta <nitingupta910@gmail.com>
* Richard Purdie <rpurdie@openedhand.com>
*/
-#define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *))
-#define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS
+#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 'workmem' of size LZO1X_1_MEM_COMPRESS */
+/* 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);
+ 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);
+ unsigned char *dst, size_t *dst_len);
/*
* Return values (< 0 = Error)
@@ -40,5 +40,6 @@ int lzo1x_decompress_safe(const unsigned char *src, size_t src_len,
#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