linux-kernel - [PATCH] genirq: Remove unused remove_percpu

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Message-ID: <20250420164656.112641-1-linux@treblig.org>
Date: Sun, 20 Apr 2025 17:46:56 +0100
From: linux@...blig.org
To: tglx@...utronix.de,
	piliu@...hat.com
Cc: linux-kernel@...r.kernel.org,
	"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH] genirq: Remove unused  remove_percpu_irq

From: "Dr. David Alan Gilbert" <linux@...blig.org>

remove_percpu_irq() has been unused since it was added in 2011 by
commit 31d9d9b6d830 ("genirq: Add support for per-cpu dev_id interrupts")

Remove it.
(I see Pingfan Liu tried to remove it as part of a series exactly
3 years ago, but don't see anything about why it didn't happen).

Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
 include/linux/irq.h |  1 -
 kernel/irq/manage.c | 15 ---------------
 2 files changed, 16 deletions(-)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index dd5df1e2d032..d8554da1b226 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -597,7 +597,6 @@ enum {
 
 struct irqaction;
 extern int setup_percpu_irq(unsigned int irq, struct irqaction *new);
-extern void remove_percpu_irq(unsigned int irq, struct irqaction *act);
 
 #ifdef CONFIG_DEPRECATED_IRQ_CPU_ONOFFLINE
 extern void irq_cpu_online(void);
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 753eef8e041c..30652434724d 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -2497,21 +2497,6 @@ static struct irqaction *__free_percpu_irq(unsigned int irq, void __percpu *dev_
 	return NULL;
 }
 
-/**
- *	remove_percpu_irq - free a per-cpu interrupt
- *	@irq: Interrupt line to free
- *	@act: irqaction for the interrupt
- *
- * Used to remove interrupts statically setup by the early boot process.
- */
-void remove_percpu_irq(unsigned int irq, struct irqaction *act)
-{
-	struct irq_desc *desc = irq_to_desc(irq);
-
-	if (desc && irq_settings_is_per_cpu_devid(desc))
-	    __free_percpu_irq(irq, act->percpu_dev_id);
-}
-
 /**
  *	free_percpu_irq - free an interrupt allocated with request_percpu_irq
  *	@irq: Interrupt line to free
-- 
2.49.0