aboutsummaryrefslogtreecommitdiff
path: root/kernel/irq/migration.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/irq/migration.c')
-rw-r--r--kernel/irq/migration.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index a57ebe9fa6f..4baa3bbcd25 100644
--- 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);
+}
+