47 lines
1.6 KiB
Diff
47 lines
1.6 KiB
Diff
From 52108bd55c31c7031f0cc8905fe05b3169d1e8e7 Mon Sep 17 00:00:00 2001
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Message-Id: <52108bd55c31c7031f0cc8905fe05b3169d1e8e7.1601675151.git.zanussi@kernel.org>
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In-Reply-To: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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References: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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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: [PATCH 070/333] genirq: Disable irqpoll on -rt
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.148-rt64.tar.xz
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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 | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
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index d867d6ddafdd..cd12ee86c01e 100644
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--- a/kernel/irq/spurious.c
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+++ b/kernel/irq/spurious.c
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@@ -442,6 +442,10 @@ 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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+ pr_warn("irqfixup boot option not supported w/ CONFIG_PREEMPT_RT_BASE\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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@@ -454,6 +458,10 @@ 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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+ pr_warn("irqpoll boot option not supported w/ CONFIG_PREEMPT_RT_BASE\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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--
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2.17.1
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