| From: Ingo Molnar <mingo@elte.hu> |
| Date: Fri, 3 Jul 2009 08:29:57 -0500 |
| Subject: genirq: disable irqpoll on -rt |
| |
| Creates long latencies for no value |
| |
| Signed-off-by: Ingo Molnar <mingo@elte.hu> |
| Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
| |
| --- |
| kernel/irq/spurious.c | 10 ++++++++++ |
| 1 file changed, 10 insertions(+) |
| |
| --- a/kernel/irq/spurious.c |
| +++ b/kernel/irq/spurious.c |
| @@ -340,6 +340,11 @@ MODULE_PARM_DESC(noirqdebug, "Disable ir |
| |
| static int __init irqfixup_setup(char *str) |
| { |
| +#ifdef CONFIG_PREEMPT_RT_BASE |
| + printk(KERN_WARNING "irqfixup boot option not supported " |
| + "w/ CONFIG_PREEMPT_RT_BASE\n"); |
| + return 1; |
| +#endif |
| irqfixup = 1; |
| printk(KERN_WARNING "Misrouted IRQ fixup support enabled.\n"); |
| printk(KERN_WARNING "This may impact system performance.\n"); |
| @@ -352,6 +357,11 @@ 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_BASE\n"); |
| + return 1; |
| +#endif |
| irqfixup = 2; |
| printk(KERN_WARNING "Misrouted IRQ fixup and polling support " |
| "enabled\n"); |
