| Date | Wed, 22 Apr 2020 13:27:36 +0200 | From | Peter Zijlstra <> | Subject | [PATCH 17/23] sched,irq: Convert to sched_set_fifo() |
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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: tglx@linutronix.de Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> --- kernel/irq/manage.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
--- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1271,9 +1271,6 @@ static int setup_irq_thread(struct irqaction *new, unsigned int irq, bool secondary) { struct task_struct *t; - struct sched_param param = { - .sched_priority = MAX_USER_RT_PRIO/2, - }; if (!secondary) { t = kthread_create(irq_thread, new, "irq/%d-%s", irq, @@ -1281,13 +1278,12 @@ setup_irq_thread(struct irqaction *new, } else { t = kthread_create(irq_thread, new, "irq/%d-s-%s", irq, new->name); - param.sched_priority -= 1; } if (IS_ERR(t)) return PTR_ERR(t); - sched_setscheduler_nocheck(t, SCHED_FIFO, ¶m); + sched_set_fifo(t); /* * We keep the reference to the task struct even if
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