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Commit 4912609f authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

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: default avatarThomas Gleixner <tglx@linutronix.de>
parent d78f8dd3

kernel/irq/handle.c

+39 −8
Original line number Diff line number Diff line
@@ -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);

}

kernel/irq/internals.h

+3 −0
Original line number Diff line number Diff line
@@ -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);