Sched_ext Merged For Linux 6.12 - Scheduling Policies As BPF Programs

[phoronix]

Phoronix: Sched_ext Merged For Linux 6.12 - Scheduling Policies As BPF Programs

Linux 6.12 is shaping up to be a heck of a kernel update! Following real-time "PREEMPT_RT" going mainline after twenty years and many other kernel features merged this week, Linus Torvalds just pulled in the much anticipated sched_ext code!..

https://www.phoronix.com/news/Linux-6.12-Lands-sched-ext

[ptr1337]

Finally, really glad to hear.

Big thanks to the whole sched-ext team as well as all contributors. Looking forward into the future!

[jams3223]

Am i dreaming?

[raink]

Time to name it 7.0 ,-)

[MastaG]

Now all thats left for me would be NTSYNC...

[Errinwright]

With NTsync 6.12 would be one hell of a release

[Danny3]

Still no Ntsync?
Still not up to date Zstd code?
I wished that at least one of these two would come to this kernel!

[ihatemichael]

What is the advantage of this? Why schedulers need to use BPF?

[NekkoDroid]

What is the advantage of this? Why schedulers need to use BPF?

General purpose schedulers are almost never optimal for specific tasks, so being able to switch schedulers from userspace at runtime allows using schedulers that are optimized for certain workloads (e.g. a "gaming scheduler" that is optimized for a single foreground processes and the repetitive access patterns from game engines or a "real time pro audio scheduler" which would prioritize audio processing over other stuff (just guessing on this, I have no experience with pro audio)).

Then there is also the benefit for development: no need to recompile the kernel and reboot when working on developing a scheduler.

[erniv2]

Wow whats happening everything coming together in one release smaller file struct, vfs optimisations, more uring goodies, PREMEMT_RT, and sched_ext, they are pushing hard for this one .

The PC goes VROOOM.