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| author | Markus F.X.J. Oberhumer <markus@oberhumer.com> | 2013-02-04 02:26:14 +0100 |
|---|---|---|
| committer | Ziyan <jaraidaniel@gmail.com> | 2016-03-11 16:11:14 +0100 |
| commit | b0d1853f2f9da3c8eda38714955629d40d016731 (patch) | |
| tree | c0a2c7d8d4181ad3429dccc969ac428d692143d0 /lib | |
| parent | 711c774ddfde3748f84492632d3ca42a5d9ce090 (diff) | |
| download | kernel_samsung_espresso10-b0d1853f2f9da3c8eda38714955629d40d016731.zip kernel_samsung_espresso10-b0d1853f2f9da3c8eda38714955629d40d016731.tar.gz kernel_samsung_espresso10-b0d1853f2f9da3c8eda38714955629d40d016731.tar.bz2 | |
lib/lzo: huge LZO decompression speedup on ARM by using unaligned access
Change-Id: I26fa643682c79d1e79ded0752fb37584b4aeef73
Signed-off-by: Markus F.X.J. Oberhumer <markus@oberhumer.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/lzo/lzo1x_decompress_safe.c | 4 | ||||
| -rw-r--r-- | lib/lzo/lzodefs.h | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/lib/lzo/lzo1x_decompress_safe.c b/lib/lzo/lzo1x_decompress_safe.c index 569985d..e3edc5f 100644 --- a/lib/lzo/lzo1x_decompress_safe.c +++ b/lib/lzo/lzo1x_decompress_safe.c @@ -72,9 +72,11 @@ copy_literal_run: COPY8(op, ip); op += 8; ip += 8; +# if !defined(__arm__) COPY8(op, ip); op += 8; ip += 8; +# endif } while (ip < ie); ip = ie; op = oe; @@ -159,9 +161,11 @@ copy_literal_run: COPY8(op, m_pos); op += 8; m_pos += 8; +# if !defined(__arm__) COPY8(op, m_pos); op += 8; m_pos += 8; +# endif } while (op < oe); op = oe; if (HAVE_IP(6)) { diff --git a/lib/lzo/lzodefs.h b/lib/lzo/lzodefs.h index 6710b83..db756cc 100644 --- a/lib/lzo/lzodefs.h +++ b/lib/lzo/lzodefs.h @@ -12,8 +12,14 @@ */ +#if 1 && defined(__arm__) && ((__LINUX_ARM_ARCH__ >= 6) || defined(__ARM_FEATURE_UNALIGNED)) +#define CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS 1 +#define COPY4(dst, src) \ + * (u32 *) (void *) (dst) = * (const u32 *) (const void *) (src) +#else #define COPY4(dst, src) \ put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst)) +#endif #if defined(__x86_64__) #define COPY8(dst, src) \ put_unaligned(get_unaligned((const u64 *)(src)), (u64 *)(dst)) |