From 7a40798c714ff462863352d490b382515daba49e Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 21 Apr 2020 12:09:13 +0200 Subject: [PATCH] sched,irq: Convert to sched_set_fifo() 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) Reviewed-by: Ingo Molnar --- kernel/irq/manage.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 761911168438..06b62746e1df 100644 --- 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, unsigned int irq, bool secondary) } 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