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-rw-r--r--include/linux/interrupt.h4
-rw-r--r--kernel/irq/handle.c2
-rw-r--r--kernel/irq/spurious.c4
3 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 80e63d8e9b1..f7b01b9a35b 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -44,6 +44,9 @@
* IRQF_TIMER - Flag to mark this interrupt as timer interrupt
* IRQF_PERCPU - Interrupt is per cpu
* IRQF_NOBALANCING - Flag to exclude this interrupt from irq balancing
+ * IRQF_IRQPOLL - Interrupt is used for polling (only the interrupt that is
+ * registered first in an shared interrupt is considered for
+ * performance reasons)
*/
#define IRQF_DISABLED 0x00000020
#define IRQF_SAMPLE_RANDOM 0x00000040
@@ -52,6 +55,7 @@
#define IRQF_TIMER 0x00000200
#define IRQF_PERCPU 0x00000400
#define IRQF_NOBALANCING 0x00000800
+#define IRQF_IRQPOLL 0x00001000
/*
* Migration helpers. Scheduled for removal in 9/2007
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 515ad40bde1..32e1ab1477d 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -180,6 +180,8 @@ fastcall unsigned int __do_IRQ(unsigned int irq)
if (desc->chip->ack)
desc->chip->ack(irq);
action_ret = handle_IRQ_event(irq, desc->action);
+ if (!noirqdebug)
+ note_interrupt(irq, desc, action_ret);
desc->chip->end(irq);
return 1;
}
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index 9d8c79b4882..b0d81aae472 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -146,7 +146,9 @@ void note_interrupt(unsigned int irq, struct irq_desc *desc,
if (unlikely(irqfixup)) {
/* Don't punish working computers */
- if ((irqfixup == 2 && irq == 0) || action_ret == IRQ_NONE) {
+ if ((irqfixup == 2 && ((irq == 0) ||
+ (desc->action->flags & IRQF_IRQPOLL))) ||
+ action_ret == IRQ_NONE) {
int ok = misrouted_irq(irq);
if (action_ret == IRQ_NONE)
desc->irqs_unhandled -= ok;