From f7944ad8443b4b26741c0b1c7e5ad1721f5d094e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 21 Jul 2009 16:07:37 +0200 Subject: [PATCH] genirq: disable random call on preempt-rt commit 04479b1c97ac0f63350e1825f7bd12caccc77a35 in tip. The random call introduces high latencies and is almost unused. Disable it for -rt. Signed-off-by: Thomas Gleixner Signed-off-by: Paul Gortmaker --- kernel/irq/handle.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index e93b055..ece44f6 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -441,8 +441,11 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action) action = action->next; } while (action); +#ifndef CONFIG_PREEMPT_RT + /* FIXME: Can we unbreak that ? */ if (status & IRQF_SAMPLE_RANDOM) add_interrupt_randomness(irq); +#endif local_irq_disable(); return retval; -- 1.7.0.4