diff options
| author | Tyler J. Stachecki <[email protected]> | 2016-06-23 23:32:40 -0400 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2016-07-15 10:42:35 -0700 |
| commit | 35a76a0366372d89a0f1ac3cebd5bc7646aadec3 (patch) | |
| tree | c5a736ca9254afde0f65a0991efd9da216fa112a /include | |
| parent | dfbc86309fd8ebb70a55cafa876320dc1ea8e833 (diff) | |
Implementation of SSE optimized Fletcher-4
Builds off of 1eeb4562 (Implementation of AVX2 optimized Fletcher-4)
This commit adds another implementation of the Fletcher-4 algorithm.
It is automatically selected at module load if it benchmarks higher
than all other available implementations.
The module benchmark was also amended to analyze the performance of
the byteswap-ed version of Fletcher-4, as well as the non-byteswaped
version. The average performance of the two is used to select the
the fastest implementation available on the host system.
Adds a pair of fields to an existing zcommon module parameter:
- zfs_fletcher_4_impl (str)
"sse2" - new SSE2 implementation if available
"ssse3" - new SSSE3 implementation if available
Signed-off-by: Tyler J. Stachecki <[email protected]>
Signed-off-by: Gvozden Neskovic <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #4789
Diffstat (limited to 'include')
| -rw-r--r-- | include/zfs_fletcher.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/zfs_fletcher.h b/include/zfs_fletcher.h index 4ccb4a2f4..afc3936c0 100644 --- a/include/zfs_fletcher.h +++ b/include/zfs_fletcher.h @@ -61,6 +61,14 @@ typedef struct fletcher_4_func { const char *name; } fletcher_4_ops_t; +#if defined(HAVE_SSE2) +extern const fletcher_4_ops_t fletcher_4_sse2_ops; +#endif + +#if defined(HAVE_SSE2) && defined(HAVE_SSSE3) +extern const fletcher_4_ops_t fletcher_4_ssse3_ops; +#endif + #if defined(HAVE_AVX) && defined(HAVE_AVX2) extern const fletcher_4_ops_t fletcher_4_avx2_ops; #endif |