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scx/scheds/rust/scx_rlfifo
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Andrea Righi cf4883fbf8 meson: introduce serialize build option 
With commit 5d20f89a ("scheds-rust: build rust schedulers in sequence"),
schedulers are now built serially one after the other to prevent meson
and cargo from forking NxN parallel tasks.

However, this change has made building a single scheduler much more
cumbersome, due to the chain of dependencies.

For example, building scx_rusty using the specific meson target would
still result in all schedulers being built, because they all depend on
each other.

To address this issue, introduce the new meson build option
`serialize=true|false` (default is false).

This option allows to disable the schedulers' build chain, restoring the
old behavior.

With this option enabled, it is now possible to build just a single
scheduler, parallelizing the cargo build properly, without triggering
the build of the others. Example:

  $ meson setup build -Dbuildtype=release -Dserialize=false
  $ meson compile -C build scx_rusty

Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
2024-06-28 10:17:37 +02:00
..
src rlfifo: Use topo.nr_cpu_ids() instead of topo.nr_cpus_possible() 2024-06-21 12:57:20 -05:00
.gitignore scx_rustland_core: generate source files in-tree 2024-02-28 17:49:44 +01:00
build.rs scx_rustland_core: introduce RustLandBuilder() 2024-02-28 17:49:44 +01:00
Cargo.toml Bump versions for a release 2024-06-03 08:35:21 -10:00
LICENSE scx_rlfifo: simple user-space FIFO scheduler written in Rust 2024-02-28 17:49:44 +01:00
meson.build meson: introduce serialize build option 2024-06-28 10:17:37 +02:00
README.md scx_rlfifo: simple user-space FIFO scheduler written in Rust 2024-02-28 17:49:44 +01:00
rustfmt.toml scx_rlfifo: simple user-space FIFO scheduler written in Rust 2024-02-28 17:49:44 +01:00

README.md

scx_rlfifo

This is a single user-defined scheduler used within sched_ext, which is a Linux kernel feature which enables implementing kernel thread schedulers in BPF and dynamically loading them. Read more about sched_ext.

Overview

scx_rlfifo is a simple FIFO scheduler runs in user-space, based on the scx_rustland_core framework.

Typical Use Case

This scheduler is provided as a simple template that can be used as a baseline to test more complex scheduling policies.

Production Ready?

Definitely not. Using this scheduler in a production environment is not recommended, unless there are specific requirements that necessitate a basic FIFO scheduling approach. Even then, it's still recommended to use the kernel's SCHED_FIFO real-time class.