sched_ext: Document task ownership state machine

Browse source

The task ownership state machine in sched_ext is quite hard to follow
from the code alone. The interaction of ownership states, memory
ordering rules and cross-CPU "lock dancing" makes the overall model
subtle.

Extend the documentation next to scx_ops_state to provide a more
structured and self-contained description of the state transitions and
their synchronization rules.

The new reference should make the code easier to reason about and
maintain and can help future contributors understand the overall
task-ownership workflow.

Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

...

This commit is contained in:

Andrea Righi 2026-03-05 07:29:00 +01:00 • committed by Tejun Heo

parent 0927780c90

commit 70f54f61a3

1 changed files with 98 additions and 16 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

114

kernel/sched/ext_internal.h

View file