42 lines
1.3 KiB
Diff
42 lines
1.3 KiB
Diff
From d25490efc909e82f8db900d0519ee6a64d3f731f Mon Sep 17 00:00:00 2001
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From: Ingo Molnar <mingo@elte.hu>
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Date: Fri, 3 Jul 2009 08:29:57 -0500
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Subject: [081/254] genirq: disable irqpoll on -rt
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Creates long latencies for no value
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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kernel/irq/spurious.c | 10 ++++++++++
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1 file changed, 10 insertions(+)
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diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
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index 611cd60..d1c80fa 100644
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--- a/kernel/irq/spurious.c
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+++ b/kernel/irq/spurious.c
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@@ -341,6 +341,11 @@ MODULE_PARM_DESC(noirqdebug, "Disable irq lockup detection when true");
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static int __init irqfixup_setup(char *str)
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{
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+#ifdef CONFIG_PREEMPT_RT_BASE
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+ printk(KERN_WARNING "irqfixup boot option not supported "
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+ "w/ CONFIG_PREEMPT_RT\n");
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+ return 1;
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+#endif
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irqfixup = 1;
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printk(KERN_WARNING "Misrouted IRQ fixup support enabled.\n");
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printk(KERN_WARNING "This may impact system performance.\n");
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@@ -353,6 +358,11 @@ module_param(irqfixup, int, 0644);
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static int __init irqpoll_setup(char *str)
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{
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+#ifdef CONFIG_PREEMPT_RT_BASE
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+ printk(KERN_WARNING "irqpoll boot option not supported "
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+ "w/ CONFIG_PREEMPT_RT\n");
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+ return 1;
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+#endif
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irqfixup = 2;
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printk(KERN_WARNING "Misrouted IRQ fixup and polling support "
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"enabled\n");
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