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Message-ID: <20240417085616.3785647-1-ruanjinjie@huawei.com>
Date: Wed, 17 Apr 2024 16:56:16 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <tglx@...utronix.de>, <linux-kernel@...r.kernel.org>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH -next] genirq: Reuse irq_is_nmi()
Move irq_is_nmi() definition from irqdesc.c to internals.h, and reuse it
in manage.c and resend.c to simplify the code.
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
kernel/irq/internals.h | 5 +++++
kernel/irq/irqdesc.c | 5 -----
kernel/irq/manage.c | 16 ++++++++--------
kernel/irq/resend.c | 2 +-
4 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 6c43ef3e7308..35ab6771accd 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -280,6 +280,11 @@ static inline int irq_desc_is_chained(struct irq_desc *desc)
return (desc->action && desc->action == &chained_action);
}
+static bool __maybe_unused irq_is_nmi(struct irq_desc *desc)
+{
+ return desc->istate & IRQS_NMI;
+}
+
#ifdef CONFIG_PM_SLEEP
bool irq_pm_check_wakeup(struct irq_desc *desc);
void irq_pm_install_action(struct irq_desc *desc, struct irqaction *action);
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 382093196210..5fd4499f649e 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -971,11 +971,6 @@ unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
return desc && desc->kstat_irqs ? per_cpu(desc->kstat_irqs->cnt, cpu) : 0;
}
-static bool irq_is_nmi(struct irq_desc *desc)
-{
- return desc->istate & IRQS_NMI;
-}
-
unsigned int kstat_irqs_desc(struct irq_desc *desc, const struct cpumask *cpumask)
{
unsigned int sum = 0;
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index bf9ae8a8686f..f366e4e2af8c 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -564,7 +564,7 @@ irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify)
/* The release function is promised process context */
might_sleep();
- if (!desc || desc->istate & IRQS_NMI)
+ if (!desc || irq_is_nmi(desc))
return -EINVAL;
/* Complete initialisation of *notify */
@@ -898,7 +898,7 @@ int irq_set_irq_wake(unsigned int irq, unsigned int on)
return -EINVAL;
/* Don't use NMIs as wake up interrupts please */
- if (desc->istate & IRQS_NMI) {
+ if (irq_is_nmi(desc)) {
ret = -EINVAL;
goto out_unlock;
}
@@ -1624,7 +1624,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
*/
unsigned int oldtype;
- if (desc->istate & IRQS_NMI) {
+ if (irq_is_nmi(desc)) {
pr_err("Invalid attempt to share NMI for %s (irq %d) on irqchip %s.\n",
new->name, irq, desc->irq_data.chip->name);
ret = -EINVAL;
@@ -2082,7 +2082,7 @@ const void *free_nmi(unsigned int irq, void *dev_id)
unsigned long flags;
const void *devname;
- if (!desc || WARN_ON(!(desc->istate & IRQS_NMI)))
+ if (!desc || WARN_ON(!irq_is_nmi(desc)))
return NULL;
if (WARN_ON(irq_settings_is_per_cpu_devid(desc)))
@@ -2548,7 +2548,7 @@ void free_percpu_nmi(unsigned int irq, void __percpu *dev_id)
if (!desc || !irq_settings_is_per_cpu_devid(desc))
return;
- if (WARN_ON(!(desc->istate & IRQS_NMI)))
+ if (WARN_ON(!irq_is_nmi(desc)))
return;
kfree(__free_percpu_irq(irq, dev_id));
@@ -2684,7 +2684,7 @@ int request_percpu_nmi(unsigned int irq, irq_handler_t handler,
return -EINVAL;
/* The line cannot already be NMI */
- if (desc->istate & IRQS_NMI)
+ if (irq_is_nmi(desc))
return -EINVAL;
action = kzalloc(sizeof(struct irqaction), GFP_KERNEL);
@@ -2745,7 +2745,7 @@ int prepare_percpu_nmi(unsigned int irq)
if (!desc)
return -EINVAL;
- if (WARN(!(desc->istate & IRQS_NMI),
+ if (WARN(!irq_is_nmi(desc),
KERN_ERR "prepare_percpu_nmi called for a non-NMI interrupt: irq %u\n",
irq)) {
ret = -EINVAL;
@@ -2787,7 +2787,7 @@ void teardown_percpu_nmi(unsigned int irq)
if (!desc)
return;
- if (WARN_ON(!(desc->istate & IRQS_NMI)))
+ if (WARN_ON(!irq_is_nmi(desc)))
goto out;
irq_nmi_teardown(desc);
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c
index 5f2c66860ac6..b07a2d732ffb 100644
--- a/kernel/irq/resend.c
+++ b/kernel/irq/resend.c
@@ -190,7 +190,7 @@ int irq_inject_interrupt(unsigned int irq)
* - not NMI type
* - activated
*/
- if ((desc->istate & IRQS_NMI) || !irqd_is_activated(&desc->irq_data))
+ if (irq_is_nmi(desc) || !irqd_is_activated(&desc->irq_data))
err = -EINVAL;
else
err = check_irq_resend(desc, true);
--
2.34.1
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