linux-kernel - [patch 09/46] genirq/cpuhotplug: Convert to lock guards

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Message-ID: <20250313155914.476509483@linutronix.de>
Date: Thu, 13 Mar 2025 16:59:57 +0100 (CET)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
 Jiri Slaby <jirislaby@...nel.org>
Subject: [patch 09/46] genirq/cpuhotplug: Convert to lock guards

Convert all lock/unlock pairs to guards and tidy up the code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 kernel/irq/cpuhotplug.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

--- a/kernel/irq/cpuhotplug.c
+++ b/kernel/irq/cpuhotplug.c
@@ -177,9 +177,8 @@ void irq_migrate_all_off_this_cpu(void)
 		bool affinity_broken;
 
 		desc = irq_to_desc(irq);
-		raw_spin_lock(&desc->lock);
-		affinity_broken = migrate_one_irq(desc);
-		raw_spin_unlock(&desc->lock);
+		scoped_guard (raw_spinlock, &desc->lock)
+			affinity_broken = migrate_one_irq(desc);
 
 		if (affinity_broken) {
 			pr_debug_ratelimited("IRQ %u: no longer affine to CPU%u\n",
@@ -244,9 +243,8 @@ int irq_affinity_online_cpu(unsigned int
 	irq_lock_sparse();
 	for_each_active_irq(irq) {
 		desc = irq_to_desc(irq);
-		raw_spin_lock_irq(&desc->lock);
-		irq_restore_affinity_of_irq(desc, cpu);
-		raw_spin_unlock_irq(&desc->lock);
+		scoped_guard (raw_spinlock, &desc->lock)
+			irq_restore_affinity_of_irq(desc, cpu);
 	}
 	irq_unlock_sparse();