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Subject[patch 24/26] genirq: Provide handle_percpu_simple_irq()
Special case for vmbus to replace their homegrown flow handler.

Not sure whether we need it at all. I can't see a reason why that
needs special handling at all if CONFIG_HYPERV=n

Not-Yet-Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/irq.h | 1 +
kernel/irq/chip.c | 15 +++++++++++++++
2 files changed, 16 insertions(+)

Index: tip/include/linux/irq.h
===================================================================
--- tip.orig/include/linux/irq.h
+++ tip/include/linux/irq.h
@@ -423,6 +423,7 @@ extern void handle_edge_irq(unsigned int
extern void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_simple_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc);
+extern void handle_percpu_simple_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_percpu_devid_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_nested_irq(unsigned int irq);
Index: tip/kernel/irq/chip.c
===================================================================
--- tip.orig/kernel/irq/chip.c
+++ tip/kernel/irq/chip.c
@@ -623,6 +623,21 @@ handle_percpu_irq(unsigned int irq, stru
}

/**
+ * handle_percpu_simple_irq - Per CPU local irq handler
+ * @irq: the interrupt number
+ * @desc: the interrupt description structure for this irq
+ *
+ * Per CPU interrupts on SMP machines without locking
+ * requirements. No ack/eoi handling.
+ */
+void
+handle_percpu_simple_irq(unsigned int irq, struct irq_desc *desc)
+{
+ kstat_incr_irqs_this_cpu(irq, desc);
+ handle_irq_event_percpu(desc, desc->action);
+}
+
+/**
* handle_percpu_devid_irq - Per CPU local irq handler with per cpu dev ids
* @irq: the interrupt number
* @desc: the interrupt description structure for this irq



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