[PATCH v1] include SCX_OPS_TRACK_MIGRATION
From: Henry Huang
Date: Sun Jun 22 2025 - 05:52:22 EST
In our environment, we need track task migrations to update per-cpu
map.
Implementing fentry(on enqueue_task_scx & dequeue_task_scx)
is a feasible solution. But there are some limitations:
1. Can't modify p->scx.xxx
2. enqueue_task_scx & dequeue_task_scx can't have some
special compilation optimizations.
3. Has more overhead compared to struct_ops
So we include SCX_OPS_TRACK_MIGRATION to support tracking task
migrations.
If SCX_OPS_TRACK_MIGRATION is set, runnable/quiescent
would be called whether task is doing migration or not.
Henry Huang (1):
sched_ext: include SCX_OPS_TRACK_MIGRATION
kernel/sched/ext.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
--
Henry