sched_ext: Properly mark SCX-internal migrations via sticky_cpu

Browse source

Reposition the setting and clearing of sticky_cpu to better define the
scope of SCX-internal migrations.

This ensures @sticky_cpu is set for the entire duration of an internal
migration (from dequeue through enqueue), making it a reliable indicator
that an SCX-internal migration is in progress. The dequeue and enqueue
paths can then use @sticky_cpu to identify internal migrations and skip
BPF scheduler notifications accordingly.

This prepares for a later commit fixing the ops.dequeue() semantics.
No functional change intended.

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

...

This commit is contained in:

Andrea Righi 2026-02-18 09:32:15 +01:00 • committed by Tejun Heo

parent 6de23f81a5

commit b75aaea24c

1 changed files with 8 additions and 5 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

13

kernel/sched/ext.c

View file