sched_ext: Convert deferred_reenq_locals from llist to regular list

Browse source

The deferred reenqueue local mechanism uses an llist (lockless list) for
collecting schedulers that need their local DSQs re-enqueued. Convert to a
regular list protected by a raw_spinlock.

The llist was used for its lockless properties, but the upcoming changes to
support remote reenqueue require more complex list operations that are
difficult to implement correctly with lockless data structures. A spinlock-
protected regular list provides the necessary flexibility.

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

...

This commit is contained in:

Tejun Heo 2026-03-07 05:29:49 -10:00

parent ea4593e97a

commit 8c1b9453fd

3 changed files with 41 additions and 21 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

57

kernel/sched/ext.c

View file

2

kernel/sched/ext_internal.h

View file

3

kernel/sched/sched.h

View file