Min: sched_ext: scheduler architecture and interfaces

Date:
Mon, 24 Jun 2024 16:33:03 +0000

Description:
Changwoo Min has posted an
introduction to writing custom schedulers with sched_ext. In a particular situation, when each scheduling policy needs its
specific action, the core kernel scheduler calls an operation
defined in struct sched_class . For example, when the core
kernel scheduler needs to select a task to be scheduled, it calls
the sched_class.pick_next_task(rq) callback of a concrete
scheduling policy. When a task becomes runnable, the core kernel
scheduler calls sched_class.enqueue(rq, p, flags) so the
concrete scheduling policy enqueues task p to run queue rq . When a task's runtime state needs to be updated, the
core kernel scheduler calls sched_class.update_curr(rq) .

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Link to news story:
https://lwn.net/Articles/979532/


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