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416d6a940f
Introduce a separate crate (scx_rustland_core) that can be used to implement sched-ext schedulers in Rust that run in user-space. This commit only provides the basic layout for the new crate and the abstraction to the custom allocator. In general, any scheduler that has a user-space component needs to use the custom allocator to prevent potential deadlock conditions, caused by page faults (a kthread needs to run to resolve the page fault, but the scheduler is blocked waiting for the user-space page fault to be resolved => deadlock). However, we don't want to necessarily enforce this constraint to all the existing Rust schedulers, some of them may do all user-space allocations in safe paths, hence the separate scx_rustland_core crate. Merging this code in scx_utils would force all the Rust schedulers to use the custom allocator. In a future commit the scx_rustland backend will be moved to scx_rustland_core, making it a totally generic BPF scheduler framework that can be used to implement user-space schedulers in Rust. Signed-off-by: Andrea Righi <andrea.righi@canonical.com> |
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| scx_layered | ||
| scx_rustland | ||
| scx_rusty | ||
| meson.build | ||
| README.md | ||
RUST SCHEDULERS
Introduction
This directory contains schedulers with user space rust components.
The README in each scheduler directory provides some background and describes the types of workloads or scenarios they're designed to accommodate. For more details on any of these schedulers, please see the header comment in their main.rs or *.bpf.c files.