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author | Eric Biggers <ebiggers@google.com> | 2025-02-10 20:26:45 +0300 |
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committer | Eric Biggers <ebiggers@google.com> | 2025-02-10 20:49:32 +0300 |
commit | dbdda1fde38259623a79f4f14b8c90c16c64b36b (patch) | |
tree | 9980e88af53937e2fb3de9304e4cf7ba163d662a /scripts/generate_rust_analyzer.py | |
parent | a03fda967eb3da15014d8e1f8ae778a60033d5e4 (diff) | |
download | linux-dbdda1fde38259623a79f4f14b8c90c16c64b36b.tar.xz |
x86/crc-t10dif: implement crc_t10dif using new template
Instantiate crc-pclmul-template.S for crc_t10dif and delete the original
PCLMULQDQ optimized implementation. This has the following advantages:
- Less CRC-variant-specific code.
- VPCLMULQDQ support, greatly improving performance on sufficiently long
messages on newer CPUs.
- A faster reduction from 128 bits to the final CRC.
- Support for i386.
Benchmark results on AMD Ryzen 9 9950X (Zen 5) using crc_kunit:
Length Before After
------ ------ -----
1 440 MB/s 386 MB/s
16 1865 MB/s 2008 MB/s
64 4343 MB/s 6917 MB/s
127 5440 MB/s 8909 MB/s
128 5533 MB/s 12150 MB/s
200 5908 MB/s 14423 MB/s
256 15870 MB/s 21288 MB/s
511 14219 MB/s 25840 MB/s
512 18361 MB/s 37797 MB/s
1024 19941 MB/s 61374 MB/s
3173 20461 MB/s 74909 MB/s
4096 21310 MB/s 78919 MB/s
16384 21663 MB/s 85012 MB/s
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20250210174540.161705-6-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
0 files changed, 0 insertions, 0 deletions