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| author | Adhemerval Zanella Netto <adhemerval.zanella@linaro.org> | 2022-07-21 10:05:05 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-07-22 11:58:27 -0300 |
| commit | b7060acfe8e80fe832e3227020d1127f2d971d1c (patch) | |
| tree | 932a620922c50bb401ce28d02d45c4ba7b638c16 /LICENSES | |
| parent | 84cfc6479bdabcca2e0b8099459dae1b51d3a4a3 (diff) | |
| download | glibc-b7060acfe8e80fe832e3227020d1127f2d971d1c.zip glibc-b7060acfe8e80fe832e3227020d1127f2d971d1c.tar.gz glibc-b7060acfe8e80fe832e3227020d1127f2d971d1c.tar.bz2 | |
powerpc64: Add optimized chacha20
It adds vectorized ChaCha20 implementation based on libgcrypt
cipher/chacha20-ppc.c. It targets POWER8 and it is used on default
for LE.
On a POWER8 it shows the following improvements (using formatted
bench-arc4random data):
POWER8
GENERIC MB/s
-----------------------------------------------
arc4random [single-thread] 138.77
arc4random_buf(16) [single-thread] 174.36
arc4random_buf(32) [single-thread] 228.11
arc4random_buf(48) [single-thread] 252.31
arc4random_buf(64) [single-thread] 270.11
arc4random_buf(80) [single-thread] 278.97
arc4random_buf(96) [single-thread] 287.78
arc4random_buf(112) [single-thread] 291.92
arc4random_buf(128) [single-thread] 295.25
POWER8 MB/s
-----------------------------------------------
arc4random [single-thread] 198.06
arc4random_buf(16) [single-thread] 278.79
arc4random_buf(32) [single-thread] 448.89
arc4random_buf(48) [single-thread] 551.09
arc4random_buf(64) [single-thread] 646.12
arc4random_buf(80) [single-thread] 698.04
arc4random_buf(96) [single-thread] 756.06
arc4random_buf(112) [single-thread] 784.12
arc4random_buf(128) [single-thread] 808.04
-----------------------------------------------
Checked on powerpc64-linux-gnu and powerpc64le-linux-gnu.
Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>
Diffstat (limited to 'LICENSES')
| -rw-r--r-- | LICENSES | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -391,7 +391,8 @@ Copyright 2001 by Stephen L. Moshier <moshier@na-net.ornl.gov> <https://www.gnu.org/licenses/>. */ sysdeps/aarch64/chacha20-aarch64.S, sysdeps/x86_64/chacha20-amd64-sse2.S, -and sysdeps/x86_64/chacha20-amd64-avx2.S imports code from libgcrypt, +sysdeps/x86_64/chacha20-amd64-avx2.S, and +sysdeps/powerpc/powerpc64/power8/chacha20-ppc.c imports code from libgcrypt, with the following notices: Copyright (C) 2017-2019 Jussi Kivilinna <jussi.kivilinna@iki.fi> |