#include <linux/irq.h>

  #include <linux/interrupt.h>
  
  #include "internals.h"

  void irq_move_masked_irq(struct irq_data *idata)

  {

  	struct irq_desc *desc = irq_data_to_desc(idata);
  	struct irq_chip *chip = idata->chip;

  	if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))

  		return;

  	/*
  	 * Paranoia: cpu-local interrupts shouldn't be calling in here anyway.
  	 */

  	if (!irqd_can_balance(&desc->irq_data)) {

  		WARN_ON(1);
  		return;
  	}

  	irqd_clr_move_pending(&desc->irq_data);

  	if (unlikely(cpumask_empty(desc->pending_mask)))

  		return;

  	if (!chip->irq_set_affinity)

  		return;

  	assert_raw_spin_locked(&desc->lock);

  	/*
  	 * If there was a valid mask to work with, please
  	 * do the disable, re-program, enable sequence.
  	 * This is *not* particularly important for level triggered
  	 * but in a edge trigger case, we might be setting rte

  	 * when an active trigger is coming in. This could

  	 * cause some ioapics to mal-function.
  	 * Being paranoid i guess!

  	 *
  	 * For correct operation this depends on the caller
  	 * masking the irqs.

  	 */

  	if (likely(cpumask_any_and(desc->pending_mask, cpu_online_mask)

  		   < nr_cpu_ids))

  		if (!chip->irq_set_affinity(&desc->irq_data,
  					    desc->pending_mask, false)) {

  			cpumask_copy(desc->irq_data.affinity, desc->pending_mask);

  			irq_set_thread_affinity(desc);

  		}

  	cpumask_clear(desc->pending_mask);

  }

  void irq_move_irq(struct irq_data *idata)

  {

  	bool masked;

  	if (likely(!irqd_is_setaffinity_pending(idata)))

  		return;

  	if (unlikely(irqd_irq_disabled(idata)))

  		return;

  	/*
  	 * Be careful vs. already masked interrupts. If this is a
  	 * threaded interrupt with ONESHOT set, we can end up with an
  	 * interrupt storm.
  	 */

  	masked = irqd_irq_masked(idata);

  	if (!masked)

  		idata->chip->irq_mask(idata);
  	irq_move_masked_irq(idata);

  	if (!masked)

  		idata->chip->irq_unmask(idata);
  }