mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 18:06:40 +07:00
6dd7a82cc5
Use the vector polynomial multiply-sum instructions in POWER8 to
speed up crc32c.
This is just over 41x faster than the slice-by-8 method that it
replaces. Measurements on a 4.1 GHz POWER8 show it sustaining
52 GiB/sec.
A simple btrfs write performance test:
dd if=/dev/zero of=/mnt/tmpfile bs=1M count=4096
sync
is over 3.7x faster.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
||
|---|---|---|
| .. | ||
| aes-spe-core.S | ||
| aes-spe-glue.c | ||
| aes-spe-keys.S | ||
| aes-spe-modes.S | ||
| aes-spe-regs.h | ||
| aes-tab-4k.S | ||
| crc32c-vpmsum_asm.S | ||
| crc32c-vpmsum_glue.c | ||
| Makefile | ||
| md5-asm.S | ||
| md5-glue.c | ||
| sha1-powerpc-asm.S | ||
| sha1-spe-asm.S | ||
| sha1-spe-glue.c | ||
| sha1.c | ||
| sha256-spe-asm.S | ||
| sha256-spe-glue.c | ||