1eeb4562a7
New functionality:
- Preserves existing scalar implementation.
- Adds AVX2 optimized Fletcher-4 computation.
- Fastest routines selected on module load (benchmark).
- Test case for Fletcher-4 added to ztest.
New zcommon module parameters:
- zfs_fletcher_4_impl (str): selects the implementation to use.
"fastest" - use the fastest version available
"cycle" - cycle trough all available impl for ztest
"scalar" - use the original version
"avx2" - new AVX2 implementation if available
Performance comparison (Intel i7 CPU, 1MB data buffers):
- Scalar: 4216 MB/s
- AVX2: 14499 MB/s
See contents of `/sys/module/zcommon/parameters/zfs_fletcher_4_impl`
to get list of supported values. If an implementation is not supported
on the system, it will not be shown. Currently selected option is
enclosed in `[]`.
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4330
20 lines
466 B
Makefile
20 lines
466 B
Makefile
src = @abs_top_srcdir@/module/zcommon
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obj = @abs_builddir@
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MODULE := zcommon
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EXTRA_CFLAGS = $(ZFS_MODULE_CFLAGS) @KERNELCPPFLAGS@
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obj-$(CONFIG_ZFS) := $(MODULE).o
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$(MODULE)-objs += zfs_deleg.o
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$(MODULE)-objs += zfs_prop.o
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$(MODULE)-objs += zprop_common.o
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$(MODULE)-objs += zfs_namecheck.o
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$(MODULE)-objs += zfs_comutil.o
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$(MODULE)-objs += zfs_fletcher.o
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$(MODULE)-objs += zfs_uio.o
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$(MODULE)-objs += zpool_prop.o
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$(MODULE)-$(CONFIG_X86) += zfs_fletcher_intel.o
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