From c3913a6b22645f2222b20d792da734cc2aefff81 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 21 Jul 2009 16:07:37 +0200 Subject: genirq: Disable random call on preempt-rt The random call introduces high latencies and is almost unused. Disable it for -rt. Signed-off-by: Thomas Gleixner --- kernel/irq/handle.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'kernel/irq') diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 470d08c82bbe..634620c1b291 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -156,8 +156,11 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action) action = action->next; } while (action); +#ifndef CONFIG_PREEMPT_RT_FULL + /* FIXME: Can we unbreak that ? */ if (random & IRQF_SAMPLE_RANDOM) add_interrupt_randomness(irq); +#endif if (!noirqdebug) note_interrupt(irq, desc, retval); -- cgit v1.2.3