On 2011-8-25 15:11, Liming Wang wrote:
It's a known issue that preempt_rt kernel must convert the
main timer interrupt handler to no threaded, otherwise kernel
can't work well.
Sorry, I'm wrong, irq2 is not the timer interrupt handler, it's
described as:
"IRQ2 is cascade interrupt to second interrupt controller".
I will re-send the the mail.
Liming Wang
Signed-off-by: Liming Wang<[email protected]>
---
arch/mips/kernel/i8259.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c
index 5c74eb7..fb338db 100644
--- a/arch/mips/kernel/i8259.c
+++ b/arch/mips/kernel/i8259.c
@@ -295,6 +295,7 @@ static void init_8259A(int auto_eoi)
static struct irqaction irq2 = {
.handler = no_action,
.name = "cascade",
+ .flags = IRQF_NO_THREAD,
};
static struct resource pic1_io_resource = {
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