AuxXxilium/linux_dsm_epyc7002
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be85f93ae2
linux_dsm_epyc7002/lib/raid6
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Daniel Verkamp be85f93ae2 lib/raid6: add option to skip algo benchmarking 
This is helpful for systems where fast startup time is important.
It is especially nice to avoid benchmarking RAID functions that are
never used (for example, BTRFS selects RAID6_PQ even if the parity RAID
mode is not in use).

This saves 250+ milliseconds of boot time on modern x86 and ARM systems
with a dozen or more available implementations.

The new option is defaulted to 'y' to match the previous behavior of
always benchmarking on init.

Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Signed-off-by: Shaohua Li <shli@fb.com>
2018-12-20 08:53:23 -08:00
..
test lib/raid6: check for assembler SSSE3 support 2018-12-20 08:53:23 -08:00
.gitignore lib/raid6/altivec: Add vpermxor implementation for raid6 Q syndrome 2018-03-20 16:47:25 +11:00
algos.c lib/raid6: add option to skip algo benchmarking 2018-12-20 08:53:23 -08:00
altivec.uc lib/raid6: Build proper raid6test files on powerpc 2018-03-20 16:47:52 +11:00
avx2.c lib/raid6: Add AVX2 optimized xor_syndrome functions 2016-11-07 15:08:20 -08:00
avx512.c lib/raid6: align AVX512 constants to 512 bits, not bytes 2017-08-25 10:21:47 -07:00
int.uc md/raid6 algorithms: xor_syndrome() for generic int 2015-04-22 08:00:42 +10:00
Makefile powerpc updates for 4.17 2018-04-07 12:08:19 -07:00
mktables.c lib/raid6: Add log-of-2 table for RAID6 HW requiring disk position 2017-05-16 10:01:57 +05:30
mmx.c md/raid6 algorithms: delta syndrome functions 2015-04-22 08:00:41 +10:00
neon.c md/raid6: delta syndrome for ARM NEON 2015-08-31 19:29:05 +02:00
neon.uc md/raid6: use faster multiplication for ARM NEON delta syndrome 2017-08-09 18:51:57 +01:00
recov_avx2.c x86/raid6: correctly check for assembler capabilities 2015-02-04 08:35:51 +11:00
recov_avx512.c lib/raid6: Add AVX512 optimized recovery functions 2016-09-21 09:09:44 -07:00
recov_neon_inner.c md/raid6: implement recovery using ARM NEON intrinsics 2017-08-09 18:52:07 +01:00
recov_neon.c md/raid6: implement recovery using ARM NEON intrinsics 2017-08-09 18:52:07 +01:00
recov_s390xc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
recov_ssse3.c x86/raid6: correctly check for assembler capabilities 2015-02-04 08:35:51 +11:00
recov.c lib/raid6: fix sparse warnings in recovery functions 2012-05-28 14:10:22 +10:00
s390vx.uc RAID/s390: Remove VLA usage 2018-07-04 08:37:50 +02:00
sse1.c md/raid6 algorithms: delta syndrome functions 2015-04-22 08:00:41 +10:00
sse2.c treewide: Align function definition open/close braces 2018-03-26 11:13:09 +02:00
unroll.awk Merge branch 'async' of macbook:git/btrfs-unstable 2010-08-09 10:36:44 +01:00
vpermxor.uc lib/raid6/altivec: Add vpermxor implementation for raid6 Q syndrome 2018-03-20 16:47:25 +11:00
x86.h lib/raid6: Add AVX512 optimized gen_syndrome functions 2016-09-21 09:09:44 -07:00