From: Marc Zyngier <maz@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org, kernel-team@android.com
Subject: [PATCH] genirq/irqaction: Move dev_id and percpu_dev_id in a union
Date: Sat, 10 Apr 2021 13:00:08 +0100 [thread overview]
Message-ID: <20210410120008.3034091-1-maz@kernel.org> (raw)
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
next reply other threads:[~2021-04-10 12:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-10 12:00 Marc Zyngier [this message]
2021-04-18 23:44 ` [PATCH] genirq/irqaction: Move dev_id and percpu_dev_id in a union Thomas Gleixner
2021-04-20 9:08 ` Marc Zyngier
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