genirq: Mirror IRQ_PER_CPU and IRQ_NO_BALANCING in irq_data.state

That's the right data structure to look at for arch code.

Accessor functions are provided.

	 irqd_is_per_cpu(irqdata);
	 irqd_can_balance(irqdata);

Coders who access them directly will be tracked down and slapped with
stinking trouts.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 15 insertions, 1 deletions

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 3f607ad94220..d5312e6fe1aa 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -132,10 +132,14 @@ struct irq_data {
  * Bit masks for irq_data.state
  *
  * IRQD_SETAFFINITY_PENDING     - Affinity setting is pending
+ * IRQD_NO_BALANCING            - Balancing disabled for this IRQ
+ * IRQD_PER_CPU                 - Interrupt is per cpu
  */
 enum {
         /* Bit 0 - 7 reserved for TYPE will use later */
-        IRQD_SETAFFINITY_PENDING = (1 << 8),
+        IRQD_SETAFFINITY_PENDING        = (1 <<  8),
+        IRQD_NO_BALANCING               = (1 << 10),
+        IRQD_PER_CPU                    = (1 << 11),
 };
 
 static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
@@ -143,6 +147,16 @@ static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
         return d->state_use_accessors & IRQD_SETAFFINITY_PENDING;
 }
 
+static inline bool irqd_is_per_cpu(struct irq_data *d)
+{
+        return d->state_use_accessors & IRQD_PER_CPU;
+}
+
+static inline bool irqd_can_balance(struct irq_data *d)
+{
+        return !(d->state_use_accessors & (IRQD_PER_CPU | IRQD_NO_BALANCING));
+}
+
 /**
  * struct irq_chip - hardware interrupt chip descriptor
  *