fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / kernel / irq / migration.c

diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index a57ebe9..4baa3bb 100644 (file)
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -7,17 +7,17 @@ void set_pending_irq(unsigned int irq, cpumask_t mask)
        unsigned long flags;
 
        spin_lock_irqsave(&desc->lock, flags);
-       desc->move_irq = 1;
+       desc->status |= IRQ_MOVE_PENDING;
        irq_desc[irq].pending_mask = mask;
        spin_unlock_irqrestore(&desc->lock, flags);
 }
 
-void move_native_irq(int irq)
+void move_masked_irq(int irq)
 {
        struct irq_desc *desc = irq_desc + irq;
        cpumask_t tmp;
 
-       if (likely(!desc->move_irq))
+       if (likely(!(desc->status & IRQ_MOVE_PENDING)))
                return;
 
        /*
@@ -28,7 +28,7 @@ void move_native_irq(int irq)
                return;
        }
 
-       desc->move_irq = 0;
+       desc->status &= ~IRQ_MOVE_PENDING;
 
        if (unlikely(cpus_empty(irq_desc[irq].pending_mask)))
                return;
@@ -48,15 +48,29 @@ void move_native_irq(int irq)
         * when an active trigger is comming 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))) {
-               if (likely(!(desc->status & IRQ_DISABLED)))
-                       desc->chip->disable(irq);
-
                desc->chip->set_affinity(irq,tmp);
-
-               if (likely(!(desc->status & IRQ_DISABLED)))
-                       desc->chip->enable(irq);
        }
        cpus_clear(irq_desc[irq].pending_mask);
 }
+
+void move_native_irq(int irq)
+{
+       struct irq_desc *desc = irq_desc + irq;
+
+       if (likely(!(desc->status & IRQ_MOVE_PENDING)))
+               return;
+
+       if (likely(!(desc->status & IRQ_DISABLED)))
+               desc->chip->disable(irq);
+
+       move_masked_irq(irq);
+
+       if (likely(!(desc->status & IRQ_DISABLED)))
+               desc->chip->enable(irq);
+}
+