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 --- include/linux/interrupt.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -64,7 +64,6 @@ struct irqaction { struct irqaction { irq_handler_t handler; unsigned long flags; - cpumask_t mask; const char *name; void *dev_id; struct irqaction *next;