1 files changed, 31 insertions, 34 deletions

diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 77b7acc875c..ca3f4aaff70 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -1,75 +1,72 @@
 
 #include <linux/irq.h>
+#include <linux/interrupt.h>
 
-void set_pending_irq(unsigned int irq, cpumask_t mask)
-{
-	struct irq_desc *desc = irq_desc + irq;
-	unsigned long flags;
-
-	spin_lock_irqsave(&desc->lock, flags);
-	desc->status |= IRQ_MOVE_PENDING;
-	irq_desc[irq].pending_mask = mask;
-	spin_unlock_irqrestore(&desc->lock, flags);
-}
+#include "internals.h"
 
-void move_masked_irq(int irq)
+void irq_move_masked_irq(struct irq_data *idata)
 {
-	struct irq_desc *desc = irq_desc + irq;
-	cpumask_t tmp;
+	struct irq_desc *desc = irq_data_to_desc(idata);
+	struct irq_chip *chip = idata->chip;
 
-	if (likely(!(desc->status & IRQ_MOVE_PENDING)))
+	if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))
 		return;
 
 	/*
 	 * Paranoia: cpu-local interrupts shouldn't be calling in here anyway.
 	 */
-	if (CHECK_IRQ_PER_CPU(desc->status)) {
+	if (!irqd_can_balance(&desc->irq_data)) {
 		WARN_ON(1);
 		return;
 	}
 
-	desc->status &= ~IRQ_MOVE_PENDING;
+	irqd_clr_move_pending(&desc->irq_data);
 
-	if (unlikely(cpus_empty(irq_desc[irq].pending_mask)))
+	if (unlikely(cpumask_empty(desc->pending_mask)))
 		return;
 
-	if (!desc->chip->set_affinity)
+	if (!chip->irq_set_affinity)
 		return;
 
-	assert_spin_locked(&desc->lock);
-
-	cpus_and(tmp, irq_desc[irq].pending_mask, cpu_online_map);
+	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 comming in. This could
+	 * 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(!cpus_empty(tmp))) {
-		desc->chip->set_affinity(irq,tmp);
-	}
-	cpus_clear(irq_desc[irq].pending_mask);
+	if (cpumask_any_and(desc->pending_mask, cpu_online_mask) < nr_cpu_ids)
+		irq_do_set_affinity(&desc->irq_data, desc->pending_mask, false);
+
+	cpumask_clear(desc->pending_mask);
 }
 
-void move_native_irq(int irq)
+void irq_move_irq(struct irq_data *idata)
 {
-	struct irq_desc *desc = irq_desc + irq;
+	bool masked;
 
-	if (likely(!(desc->status & IRQ_MOVE_PENDING)))
+	if (likely(!irqd_is_setaffinity_pending(idata)))
 		return;
 
-	if (unlikely(desc->status & IRQ_DISABLED))
+	if (unlikely(irqd_irq_disabled(idata)))
 		return;
 
-	desc->chip->mask(irq);
-	move_masked_irq(irq);
-	desc->chip->unmask(irq);
+	/*
+	 * 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);
 }
-