From: Rusty Russell <rusty@rustcorp.com.au>
Date: Thu, 24 Sep 2009 15:34:37 +0000 (-0600)
Subject: cpumask: remove unused mask field from struct irqaction.
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=ef79f8e191722dbc1fc33bdfc448f572266c37e9;p=deliverable%2Flinux.git

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 8e9e151f811e..894ed7180bff 100644
--- 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;