diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2009-07-21 16:07:37 +0200 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-10 16:40:20 -0500 |
| commit | 2d98691a32f0f0f510efcc56c4b0e9ced006d6bf (patch) | |
| tree | 6cdf26a22b1646a741a52c4ba23f58bb43db2481 | |
| parent | 611db60241a915a1de57bb03e270adc04d6929e4 (diff) | |
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 <tglx@linutronix.de>
| -rw-r--r-- | 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 bdb180325551..982793c367dc 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -172,8 +172,11 @@ 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); |