cpumask: remove unused mask field from struct irqaction.

Up until 1.1.83, the primitive human tribes used struct sigaction for
interrupts.  The sa_mask field was overloaded to hold a pointer to the
name.

When someone created the new "struct irqaction" they carried across
the "mask" field as a kind of ancestor worship: the fact that it was
unused makes clear its spiritual significance.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 8e9e151..894ed71 100644 (file)
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -97,7 +97,6 @@ typedef irqreturn_t (*irq_handler_t)(int, void *);
 struct irqaction {
        irq_handler_t handler;
        unsigned long flags;
-       cpumask_t mask;
        const char *name;
        void *dev_id;
        struct irqaction *next;