Messages in this thread Patch in this message | | | From | Marc Zyngier <> | Subject | [PATCH] genirq/irqaction: Move dev_id and percpu_dev_id in a union | Date | Sat, 10 Apr 2021 13:00:08 +0100 |
| |
dev_id and percpu_dev_id are mutually exclusive in struct irqaction, as they conceptually represent the same thing, only in a per-cpu fashion.
Move them into an anonymous union, saving a few bytes on the way.
Signed-off-by: Marc Zyngier <maz@kernel.org> --- include/linux/interrupt.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 967e25767153..4383ee033acf 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -109,8 +109,10 @@ typedef irqreturn_t (*irq_handler_t)(int, void *); */ struct irqaction { irq_handler_t handler; - void *dev_id; - void __percpu *percpu_dev_id; + union { + void *dev_id; + void __percpu *percpu_dev_id; + }; struct irqaction *next; irq_handler_t thread_fn; struct task_struct *thread; -- 2.30.2
| |