Build on Linux 5.9

[carlosedp]

I'm trying to perform some tests with power-gzip library and it's samples but I'm getting errors:

❯ ./test_deflate
ioctl() n -1, error 22
 open_device_nodes failed
nx_deflateInit err -2
❯ ../samples/gzm
ioctl() n -1, error 22
 open_device_nodes failed
zpipe: invalid compression level

My system is a Raptor Computing System Blackbird with a 4-core Power9.
Here is my system info:

❯ uname -a
Linux debian-blackbird 5.9.8 #1 SMP Mon Nov 16 13:17:13 -03 2020 ppc64le GNU/Linux
❯ zcat /proc/config.gz|grep _VAS
CONFIG_PPC_VAS=y
❯ zcat /proc/config.gz|grep DEV_NX
CONFIG_CRYPTO_DEV_NX=y
CONFIG_CRYPTO_DEV_NX_COMPRESS=y
CONFIG_CRYPTO_DEV_NX_COMPRESS_PSERIES=y
CONFIG_CRYPTO_DEV_NX_COMPRESS_POWERNV=y

I've built the kernel with NX enabled and added permissions to /dev/crypto/nx-gzip:

❯ ll /dev/crypto/nx-gzip
crw-rw-rw- 1 root root 248, 0 Nov 16 14:39 /dev/crypto/nx-gzip

Tried both master and develop branches but got same errors.

[tuliom]

@carlosedp I suggest to use the repository from https://github.com/libnxz/power-gzip
It has newer code that I think would solve this issue.

[carlosedp]

Wow, it worked.. and it's fast:

❯ time gzip < kernel-modules-5.9.5.tar >mod.pigz.gz
gzip < kernel-modules-5.9.5.tar > mod.pigz.gz  23.30s user 0.08s system 100% cpu 23.304 total

❯ time pigz < kernel-modules-5.9.5.tar >mod.pigz.gz
pigz < kernel-modules-5.9.5.tar > mod.pigz.gz  47.07s user 0.19s system 1594% cpu 2.964 total

❯ time ~/repos/power-gzip/samples/gzm  < kernel-modules-5.9.5.tar >mod.nx.gz
~/repos/power-gzip/samples/gzm < kernel-modules-5.9.5.tar > mod.nx.gz  0.05s user 0.05s system 99% cpu 0.094 total

Thanks!

[abalib]

I updated README with a redirect to the new repository @tuliom