linux-kernel - [tip: irq/core] genirq: Make handle_enforce

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Message-ID: <173693545599.31546.9263072490501024592.tip-bot2@tip-bot2>
Date: Wed, 15 Jan 2025 10:04:15 -0000
From: "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
 linux-kernel@...r.kernel.org, maz@...nel.org
Subject: [tip: irq/core] genirq: Make handle_enforce_irqctx() unconditionally
 available

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

Commit-ID:     8d187a77f04c14fb459a5301d69f733a5a1396bc
Gitweb:        https://git.kernel.org/tip/8d187a77f04c14fb459a5301d69f733a5a1396bc
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Tue, 10 Dec 2024 11:20:43 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Wed, 15 Jan 2025 10:56:21 +01:00

genirq: Make handle_enforce_irqctx() unconditionally available

Commit 1b57d91b969c ("irqchip/gic-v2, v3: Prevent SW resends entirely")
sett the flag which enforces interrupt handling in interrupt context and
prevents software base resends for ARM GIC v2/v3.

But it missed that the helper function which checks the flag was hidden
behind CONFIG_GENERIC_PENDING_IRQ, which is not set by ARM[64].

Make the helper unconditionally available so that the enforcement actually
works.

Fixes: 1b57d91b969c ("irqchip/gic-v2, v3: Prevent SW resends entirely")
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/all/20241210101811.497716609@linutronix.de

---
 kernel/irq/internals.h |  9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index fe0272c..a29df4b 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -441,10 +441,6 @@ static inline struct cpumask *irq_desc_get_pending_mask(struct irq_desc *desc)
 {
 	return desc->pending_mask;
 }
-static inline bool handle_enforce_irqctx(struct irq_data *data)
-{
-	return irqd_is_handle_enforce_irqctx(data);
-}
 bool irq_fixup_move_pending(struct irq_desc *desc, bool force_clear);
 #else /* CONFIG_GENERIC_PENDING_IRQ */
 static inline bool irq_can_move_pcntxt(struct irq_data *data)
@@ -471,11 +467,12 @@ static inline bool irq_fixup_move_pending(struct irq_desc *desc, bool fclear)
 {
 	return false;
 }
+#endif /* !CONFIG_GENERIC_PENDING_IRQ */
+
 static inline bool handle_enforce_irqctx(struct irq_data *data)
 {
-	return false;
+	return irqd_is_handle_enforce_irqctx(data);
 }
-#endif /* !CONFIG_GENERIC_PENDING_IRQ */
 
 #if !defined(CONFIG_IRQ_DOMAIN) || !defined(CONFIG_IRQ_DOMAIN_HIERARCHY)
 static inline int irq_domain_activate_irq(struct irq_data *data, bool reserve)