linux-kernel - [tip: irq/core] genirq: Kill irq_{g,s}et_percpu_devid

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Message-ID: <176158265388.2601451.6543902782462338565.tip-bot2@tip-bot2>
Date: Mon, 27 Oct 2025 16:30:53 -0000
From: "tip-bot2 for Marc Zyngier" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Marc Zyngier <maz@...nel.org>, Thomas Gleixner <tglx@...utronix.de>,
 Will Deacon <will@...nel.org>, x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: irq/core] genirq: Kill irq_{g,s}et_percpu_devid_partition()

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     ee2d50a9f524ae829d1a8ec296d7a0170e7b8ade
Gitweb:        https://git.kernel.org/tip/ee2d50a9f524ae829d1a8ec296d7a0170e7b8ade
Author:        Marc Zyngier <maz@...nel.org>
AuthorDate:    Mon, 20 Oct 2025 13:29:41 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Mon, 27 Oct 2025 17:16:37 +01:00

genirq: Kill irq_{g,s}et_percpu_devid_partition()

These two helpers do not have any user anymore, and can be removed,
together with the affinity field kept in the irqdesc structure.

Signed-off-by: Marc Zyngier <maz@...nel.org>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Tested-by: Will Deacon <will@...nel.org>
Link: https://patch.msgid.link/20251020122944.3074811-25-maz@kernel.org
---
 include/linux/irq.h     |  4 ----
 include/linux/irqdesc.h |  1 -
 kernel/irq/irqdesc.c    | 24 +-----------------------
 3 files changed, 1 insertion(+), 28 deletions(-)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index b728c18..4a9f1d7 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -718,10 +718,6 @@ static inline void irq_set_chip_and_handler(unsigned int irq,
 }
 
 extern int irq_set_percpu_devid(unsigned int irq);
-extern int irq_set_percpu_devid_partition(unsigned int irq,
-					  const struct cpumask *affinity);
-extern int irq_get_percpu_devid_partition(unsigned int irq,
-					  struct cpumask *affinity);
 
 extern void
 __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index fd091c3..37e0b5b 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -82,7 +82,6 @@ struct irq_desc {
 	int			threads_handled_last;
 	raw_spinlock_t		lock;
 	struct cpumask		*percpu_enabled;
-	const struct cpumask	*percpu_affinity;
 #ifdef CONFIG_SMP
 	const struct cpumask	*affinity_hint;
 	struct irq_affinity_notify *affinity_notify;
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index db714d3..6acf268 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -879,8 +879,7 @@ void __irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags, bool bus)
 		chip_bus_sync_unlock(desc);
 }
 
-int irq_set_percpu_devid_partition(unsigned int irq,
-				   const struct cpumask *affinity)
+int irq_set_percpu_devid(unsigned int irq)
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
@@ -892,31 +891,10 @@ int irq_set_percpu_devid_partition(unsigned int irq,
 	if (!desc->percpu_enabled)
 		return -ENOMEM;
 
-	desc->percpu_affinity = affinity ? : cpu_possible_mask;
-
 	irq_set_percpu_devid_flags(irq);
 	return 0;
 }
 
-int irq_set_percpu_devid(unsigned int irq)
-{
-	return irq_set_percpu_devid_partition(irq, NULL);
-}
-
-int irq_get_percpu_devid_partition(unsigned int irq, struct cpumask *affinity)
-{
-	struct irq_desc *desc = irq_to_desc(irq);
-
-	if (!desc || !desc->percpu_enabled)
-		return -EINVAL;
-
-	if (affinity)
-		cpumask_copy(affinity, desc->percpu_affinity);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(irq_get_percpu_devid_partition);
-
 void kstat_incr_irq_this_cpu(unsigned int irq)
 {
 	kstat_incr_irqs_this_cpu(irq_to_desc(irq));