Linux 5.16-rc1 Released With Intel AMX, FUTEX2, Folios & A Lot More

[phoronix]

Phoronix: Linux 5.16-rc1 Released With Intel AMX, FUTEX2, Folios & A Lot More

Linus Torvalds has released Linux 5.16-rc1 in moving past the exciting merge window and onto bug fixing for this next version of the Linux kernel...

https://www.phoronix.com/scan.php?page=news_item&px=Linux-5.16-rc1

[enihcam]

if 5.16 were to be released before end of 2021, would there still be a chance of it to be LTS?

[mphuZ]

Cool! It's interesting to see benchmarks.

Do I need special patches for Proton & futex2?

https://youtu.be/eK8lBmtX8Bg?t=442

[Michael]

if 5.16 were to be released before end of 2021, would there still be a chance of it to be LTS?

No: https://www.phoronix.com/scan.php?pa....15-LTS-Kernel

[perpetually high]

Cool! It's interesting to see benchmarks.

Do I need special patches for Proton & futex2?
https://youtu.be/eK8lBmtX8Bg?t=442

Nope, should be good to go if it's baked into the kernel.

Can verify futex / futex2 with:

$ dmesg | grep -i futex
[ 0.135096] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[ 0.135096] futex2 hash table entries: 1024 (order: 2, 24576 bytes, linear)

$ grep -i futex /boot/config-$(uname -r)
CONFIG_FUTEX=y
CONFIG_FUTEX2=y
CONFIG_FUTEX_PI=y

or

$ zgrep -i futex /proc/config.gz
CONFIG_FUTEX=y
CONFIG_FUTEX2=y
CONFIG_FUTEX_PI=y

For WINE, I have the following environment variables set in ~/.pam_environment:

WINEFSYNC=1
WINEFSYNC_SPINCOUNT=100

[jacob]

Is there currently any open source software that can take advantage of AMX?

[ⲣⲂaggins]

Good to see the rtw89 driver finally made it. A few new laptops are going to need that. Hopefully the number of noob amazon reviews lamenting the need to set up dkms can now reduce.

[perpetually high]

Another cool feature of 5.16:

[shmerl]

Will Wine benefit from it automatically when FUTEX2 is present in the kernel or it needs some environment variable to use it?

[perpetually high]

Up and running and ran some quick benchmarks with my trusty PTS software (just pts/osbench) if anyone is interested:

https://openbenchmarking.org/result/2111152-TJ-OSBENCH5141

too lazy; didn't click: