[patch-mm 21/23] x86-64 block irq balancing for timer

From: Venki Pallipadi <[email protected]>

Disable irq balancing on IRQ0.

Signed-off-by: Venkatesh Pallipadi <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Andi Kleen <[email protected]>

---
 arch/x86_64/kernel/time.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.22-rc4-mm/arch/x86_64/kernel/time.c
===================================================================
--- linux-2.6.22-rc4-mm.orig/arch/x86_64/kernel/time.c	2007-06-10 10:44:39.000000000 +0200
+++ linux-2.6.22-rc4-mm/arch/x86_64/kernel/time.c	2007-06-10 10:44:40.000000000 +0200
@@ -255,7 +255,7 @@ static unsigned int __init tsc_calibrate
 
 static struct irqaction irq0 = {
 	.handler	= timer_interrupt,
-	.flags		= IRQF_DISABLED | IRQF_IRQPOLL,
+	.flags		= IRQF_DISABLED | IRQF_IRQPOLL | IRQF_NOBALANCING,
 	.mask		= CPU_MASK_NONE,
 	.name		= "timer"
 };

-- 

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---

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    • From: Thomas Gleixner <[email protected]>

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