genirq: Implement handle_irq_event()
Core code replacement for the ugly camel case. It contains all the
code which is shared in all handlers.
clear status flags
set INPROGRESS flag
unlock
call action chain
note_interrupt
lock
clr INPROGRESS flag
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index cdd6fbb..4ef0594 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -51,14 +51,7 @@
"but no thread function available.", irq, action->name);
}
-/**
- * handle_IRQ_event - irq action chain handler
- * @irq: the interrupt number
- * @action: the interrupt action chain for this irq
- *
- * Handles the action chain of an irq event
- */
-irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
+static irqreturn_t __handle_irq_event(unsigned int irq, struct irqaction *action)
{
irqreturn_t ret, retval = IRQ_NONE;
unsigned int status = 0;
@@ -120,3 +113,41 @@
return retval;
}
+
+irqreturn_t
+handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
+{
+ irqreturn_t ret = __handle_irq_event(desc->irq_data.irq, action);
+
+ if (!noirqdebug)
+ note_interrupt(desc->irq_data.irq, desc, ret);
+ return ret;
+}
+
+irqreturn_t handle_irq_event(struct irq_desc *desc)
+{
+ struct irqaction *action = desc->action;
+ irqreturn_t ret;
+
+ desc->status &= ~IRQ_PENDING;
+ desc->status |= IRQ_INPROGRESS;
+ raw_spin_unlock(&desc->lock);
+
+ ret = handle_irq_event_percpu(desc, action);
+
+ raw_spin_lock(&desc->lock);
+ desc->status &= ~IRQ_INPROGRESS;
+ return ret;
+}
+
+/**
+ * handle_IRQ_event - irq action chain handler
+ * @irq: the interrupt number
+ * @action: the interrupt action chain for this irq
+ *
+ * Handles the action chain of an irq event
+ */
+irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
+{
+ return __handle_irq_event(irq, action);
+}