From 2f1648220214d18168e55920c21014e71c2d5bbc Mon Sep 17 00:00:00 2001 From: Min Zhou Date: Mon, 1 May 2023 17:19:43 +0800 Subject: LoongArch: crypto: Add crc32 and crc32c hw acceleration With a blatant copy of some MIPS bits we introduce the crc32 and crc32c hw accelerated module to LoongArch. LoongArch has provided these instructions to calculate crc32 and crc32c: * crc.w.b.w crcc.w.b.w * crc.w.h.w crcc.w.h.w * crc.w.w.w crcc.w.w.w * crc.w.d.w crcc.w.d.w So we can make use of these instructions to improve the performance of calculation for crc32(c) checksums. As can be seen from the following test results, crc32(c) instructions can improve the performance by 58%. Software implemention Hardware acceleration Buffer size time cost (seconds) time cost (seconds) Accel. 100 KB 0.000845 0.000534 59.1% 1 MB 0.007758 0.004836 59.4% 10 MB 0.076593 0.047682 59.4% 100 MB 0.756734 0.479126 58.5% 1000 MB 7.563841 4.778266 58.5% Signed-off-by: Min Zhou Signed-off-by: Huacai Chen --- crypto/Kconfig | 3 +++ 1 file changed, 3 insertions(+) (limited to 'crypto') diff --git a/crypto/Kconfig b/crypto/Kconfig index 9c86f7045157..a0e080d5f6ae 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1395,6 +1395,9 @@ endif if ARM64 source "arch/arm64/crypto/Kconfig" endif +if LOONGARCH +source "arch/loongarch/crypto/Kconfig" +endif if MIPS source "arch/mips/crypto/Kconfig" endif -- cgit v1.2.3-70-g09d2