From c68b73d5f260690c9f1331823d57dd7bbc77501a Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:57 -0500 Subject: [PATCH 098/282] genirq: disable irqpoll on -rt Creates long latencies for no value Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- kernel/irq/spurious.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c index dc813a9..d09e0f5 100644 --- a/kernel/irq/spurious.c +++ b/kernel/irq/spurious.c @@ -341,6 +341,11 @@ MODULE_PARM_DESC(noirqdebug, "Disable irq lockup detection when true"); static int __init irqfixup_setup(char *str) { +#ifdef CONFIG_PREEMPT_RT_BASE + printk(KERN_WARNING "irqfixup boot option not supported " + "w/ CONFIG_PREEMPT_RT\n"); + return 1; +#endif irqfixup = 1; printk(KERN_WARNING "Misrouted IRQ fixup support enabled.\n"); printk(KERN_WARNING "This may impact system performance.\n"); @@ -353,6 +358,11 @@ module_param(irqfixup, int, 0644); static int __init irqpoll_setup(char *str) { +#ifdef CONFIG_PREEMPT_RT_BASE + printk(KERN_WARNING "irqpoll boot option not supported " + "w/ CONFIG_PREEMPT_RT\n"); + return 1; +#endif irqfixup = 2; printk(KERN_WARNING "Misrouted IRQ fixup and polling support " "enabled\n"); -- 1.7.10