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genirq: Hide irq_cpu_{on,off}line() behind a deprecated option

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irq_cpu_{on,off}line() are now only used by the Octeon platform.
Make their use conditional on this plaform being enabled, and
otherwise hidden away.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/20211021170414.3341522-4-maz@kernel.org
This commit is contained in:
Marc Zyngier 2021-10-21 18:04:14 +01:00
parent dd098a0e03
commit 8d15a7295d
3 changed files with 13 additions and 1 deletions
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5
include/linux/irq.h
View file

@ -524,9 +524,10 @@ struct irq_chip {
void (*irq_bus_lock)(struct irq_data *data);
void (*irq_bus_sync_unlock)(struct irq_data *data);
#ifdef CONFIG_DEPRECATED_IRQ_CPU_ONOFFLINE
void (*irq_cpu_online)(struct irq_data *data);
void (*irq_cpu_offline)(struct irq_data *data);
#endif
void (*irq_suspend)(struct irq_data *data);
void (*irq_resume)(struct irq_data *data);
void (*irq_pm_shutdown)(struct irq_data *data);
@ -606,8 +607,10 @@ 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);
extern void irq_cpu_offline(void);
#endif
extern int irq_set_affinity_locked(struct irq_data *data,
const struct cpumask *cpumask, bool force);
extern int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info);

7
kernel/irq/Kconfig
View file

@ -144,3 +144,10 @@ config GENERIC_IRQ_MULTI_HANDLER
bool
help
Allow to specify the low level IRQ handler at run time.
# Cavium Octeon is the last system to use this deprecated option
# Do not even think of enabling this on any new platform
config DEPRECATED_IRQ_CPU_ONOFFLINE
bool
depends on CAVIUM_OCTEON_SOC
default CAVIUM_OCTEON_SOC

2
kernel/irq/chip.c
View file

@ -1122,6 +1122,7 @@ void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set)
}
EXPORT_SYMBOL_GPL(irq_modify_status);
#ifdef CONFIG_DEPRECATED_IRQ_CPU_ONOFFLINE
/**
* irq_cpu_online - Invoke all irq_cpu_online functions.
*
@ -1181,6 +1182,7 @@ void irq_cpu_offline(void)
raw_spin_unlock_irqrestore(&desc->lock, flags);
}
}
#endif
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY