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genirq: Implement handle_irq_event()

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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>
This commit is contained in:
Thomas Gleixner 2011-02-07 01:08:49 +01:00
parent d78f8dd36b
commit 4912609f22
2 changed files with 42 additions and 8 deletions
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47
kernel/irq/handle.c
View File

@ -51,14 +51,7 @@ static void warn_no_thread(unsigned int irq, struct irqaction *action)
"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 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
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);
}

3
kernel/irq/internals.h
View File

@ -45,6 +45,9 @@ extern void irq_disable(struct irq_desc *desc);
extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
irqreturn_t handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action);
irqreturn_t handle_irq_event(struct irq_desc *desc);
/* Resending of interrupts :*/
void check_irq_resend(struct irq_desc *desc, unsigned int irq);
bool irq_wait_for_poll(struct irq_desc *desc);