| Date | Wed, 22 Apr 2020 13:27:40 +0200 | From | Peter Zijlstra <> | Subject | [PATCH 21/23] sched,psi: Convert to sched_set_fifo_low() |
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Because SCHED_FIFO is a broken scheduler model (see previous patches) take away the priority field, the kernel can't possibly make an informed decision.
Effectively no change.
Cc: hannes@cmpxchg.org Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> --- kernel/sched/psi.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)
--- a/kernel/sched/psi.c +++ b/kernel/sched/psi.c @@ -1100,9 +1100,6 @@ struct psi_trigger *psi_trigger_create(s mutex_lock(&group->trigger_lock); if (!rcu_access_pointer(group->poll_kworker)) { - struct sched_param param = { - .sched_priority = 1, - }; struct kthread_worker *kworker; kworker = kthread_create_worker(0, "psimon"); @@ -1111,7 +1108,7 @@ struct psi_trigger *psi_trigger_create(s mutex_unlock(&group->trigger_lock); return ERR_CAST(kworker); } - sched_setscheduler_nocheck(kworker->task, SCHED_FIFO, ¶m); + sched_set_fifo_low(kworker->task); kthread_init_delayed_work(&group->poll_work, psi_poll_work); rcu_assign_pointer(group->poll_kworker, kworker);
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