diff options
Diffstat (limited to 'debian/patches-rt/0285-genirq-Disable-irqpoll-on-rt.patch')
| -rw-r--r-- | debian/patches-rt/0285-genirq-Disable-irqpoll-on-rt.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/debian/patches-rt/0285-genirq-Disable-irqpoll-on-rt.patch b/debian/patches-rt/0285-genirq-Disable-irqpoll-on-rt.patch new file mode 100644 index 000000000..8033dbbab --- /dev/null +++ b/debian/patches-rt/0285-genirq-Disable-irqpoll-on-rt.patch @@ -0,0 +1,43 @@ +From 4795907a92ad1bf9383b0c748facb436cac71e36 Mon Sep 17 00:00:00 2001 +From: Ingo Molnar <mingo@elte.hu> +Date: Fri, 3 Jul 2009 08:29:57 -0500 +Subject: [PATCH 285/323] genirq: Disable irqpoll on -rt +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz + +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 | 8 ++++++++ + 1 file changed, 8 insertions(+) + +diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c +index f865e5f4d382..dc7311dd74b1 100644 +--- a/kernel/irq/spurious.c ++++ b/kernel/irq/spurious.c +@@ -443,6 +443,10 @@ MODULE_PARM_DESC(noirqdebug, "Disable irq lockup detection when true"); + + static int __init irqfixup_setup(char *str) + { ++#ifdef CONFIG_PREEMPT_RT ++ pr_warn("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"); +@@ -455,6 +459,10 @@ module_param(irqfixup, int, 0644); + + static int __init irqpoll_setup(char *str) + { ++#ifdef CONFIG_PREEMPT_RT ++ pr_warn("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"); +-- +2.43.0 + |