29 lines
882 B
Diff
29 lines
882 B
Diff
From e3f848bfebab5bfb20ae03b907e338dbab8bb918 Mon Sep 17 00:00:00 2001
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Tue, 21 Jul 2009 16:07:37 +0200
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Subject: [PATCH 097/293] genirq: Disable random call on preempt-rt
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The random call introduces high latencies and is almost
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unused. Disable it for -rt.
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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kernel/irq/handle.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
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index 10e0772..a768885 100644
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--- a/kernel/irq/handle.c
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+++ b/kernel/irq/handle.c
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@@ -156,7 +156,10 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
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action = action->next;
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} while (action);
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+#ifndef CONFIG_PREEMPT_RT_FULL
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+ /* FIXME: Can we unbreak that ? */
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add_interrupt_randomness(irq, flags);
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+#endif
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if (!noirqdebug)
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note_interrupt(irq, desc, retval);
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