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| author |   WANG Xuerui <git@xen0n.name> | 2023-09-06 22:53:55 +0800 |
|---|---|---|
| committer |   Huacai Chen <chenhuacai@loongson.cn> | 2023-09-06 22:53:55 +0800 |
| commit | 75ded18a5e8e51ca2d26d55f010d60ae9aab652c (patch) | |
| tree | 29464a5abd1b2b6f7141a26374d45d03eaf17078 /arch/loongarch/lib/Makefile | |
| parent | LoongArch: Allow usage of LSX/LASX in the kernel (diff) | |
| download | wireguard-linux-75ded18a5e8e51ca2d26d55f010d60ae9aab652c.tar.xz wireguard-linux-75ded18a5e8e51ca2d26d55f010d60ae9aab652c.zip | |
LoongArch: Add SIMD-optimized XOR routines
Add LSX and LASX implementations of xor operations, operating on 64
bytes (one L1 cache line) at a time, for a balance between memory
utilization and instruction mix. Huacai confirmed that all future
LoongArch implementations by Loongson (that we care) will likely also
feature 64-byte cache lines, and experiments show no throughput
improvement with further unrolling.
Performance numbers measured during system boot on a 3A5000 @ 2.5GHz:
> 8regs : 12702 MB/sec
> 8regs_prefetch : 10920 MB/sec
> 32regs : 12686 MB/sec
> 32regs_prefetch : 10918 MB/sec
> lsx : 17589 MB/sec
> lasx : 26116 MB/sec
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/lib/Makefile')
| -rw-r--r-- | arch/loongarch/lib/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/loongarch/lib/Makefile b/arch/loongarch/lib/Makefile index d60d4e096cfa..a77bf160bfc4 100644 --- a/arch/loongarch/lib/Makefile +++ b/arch/loongarch/lib/Makefile @@ -6,4 +6,6 @@ lib-y += delay.o memset.o memcpy.o memmove.o \ clear_user.o copy_user.o csum.o dump_tlb.o unaligned.o +obj-$(CONFIG_CPU_HAS_LSX) += xor_simd.o xor_simd_glue.o + obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o |