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charset="utf-8" Signed-off-by: Joel Fernandes --- kernel/sched/ext.c | 39 +++++++++++++++++++++++++-------------- 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index 84ccab8cb838..23e5711bc4fc 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -4960,6 +4960,31 @@ static void scx_disable_workfn(struct kthread_work *= work) =20 scx_init_task_enabled =3D false; =20 + for_each_possible_cpu(cpu) { + struct rq *rq =3D cpu_rq(cpu); + struct rq_flags rf; + + /* + * Invalidate all the rq clocks to prevent getting outdated + * rq clocks from a previous scx scheduler. + */ + scx_rq_clock_invalidate(rq); + + /* + * We are unloading the sched_ext scheduler, we do not need its + * DL server bandwidth anymore, remove it for all CPUs. Whenever + * the first SCX task is enqueued (when scx is re-loaded), its DL + * server bandwidth will be re-initialized. + */ + rq_lock_irqsave(rq, &rf); + update_rq_clock(rq); + if (dl_server_active(&rq->ext_server)) + dl_server_stop(&rq->ext_server); + dl_server_remove_params(&rq->ext_server); + rq_unlock_irqrestore(rq, &rf); + } + + scx_task_iter_start(&sti); while ((p =3D scx_task_iter_next_locked(&sti))) { const struct sched_class *old_class =3D p->sched_class; @@ -4985,26 +5010,12 @@ static void scx_disable_workfn(struct kthread_work = *work) =20 for_each_possible_cpu(cpu) { struct rq *rq =3D cpu_rq(cpu); - struct rq_flags rf; =20 /* * Invalidate all the rq clocks to prevent getting outdated * rq clocks from a previous scx scheduler. */ scx_rq_clock_invalidate(rq); - - /* - * We are unloading the sched_ext scheduler, we do not need its - * DL server bandwidth anymore, remove it for all CPUs. Whenever - * the first SCX task is enqueued (when scx is re-loaded), its DL - * server bandwidth will be re-initialized. - */ - rq_lock_irqsave(rq, &rf); - update_rq_clock(rq); - if (dl_server_active(&rq->ext_server)) - dl_server_stop(&rq->ext_server); - dl_server_remove_params(&rq->ext_server); - rq_unlock_irqrestore(rq, &rf); } =20 /* no task is on scx, turn off all the switches and flush in-progress cal= ls */ --=20 2.43.0