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genirq: Move irq_set_lockdep_class() to core

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irq_set_lockdep_class() is used from modules and requires irq_to_desc() to
be exported. Move it into the core code which lifts another requirement for
the export.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201210194042.860029489@linutronix.de
This commit is contained in:
Thomas Gleixner 2020-12-10 20:25:39 +01:00
parent fdd0296304
commit f1c6306c0d
2 changed files with 18 additions and 6 deletions
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10
include/linux/irqdesc.h
View File

@ -240,16 +240,14 @@ static inline bool irq_is_percpu_devid(unsigned int irq)
return irq_check_status_bit(irq, IRQ_PER_CPU_DEVID);
}
void __irq_set_lockdep_class(unsigned int irq, struct lock_class_key *lock_class,
struct lock_class_key *request_class);
static inline void
irq_set_lockdep_class(unsigned int irq, struct lock_class_key *lock_class,
struct lock_class_key *request_class)
{
struct irq_desc *desc = irq_to_desc(irq);
if (desc) {
lockdep_set_class(&desc->lock, lock_class);
lockdep_set_class(&desc->request_mutex, request_class);
}
if (IS_ENABLED(CONFIG_LOCKDEP))
__irq_set_lockdep_class(irq, lock_class, request_class);
}
#endif

14
kernel/irq/irqdesc.c
View File

@ -968,3 +968,17 @@ unsigned int kstat_irqs_usr(unsigned int irq)
rcu_read_unlock();
return sum;
}
#ifdef CONFIG_LOCKDEP
void __irq_set_lockdep_class(unsigned int irq, struct lock_class_key *lock_class,
struct lock_class_key *request_class)
{
struct irq_desc *desc = irq_to_desc(irq);
if (desc) {
lockdep_set_class(&desc->lock, lock_class);
lockdep_set_class(&desc->request_mutex, request_class);
}
}
EXPORT_SYMBOL_GPL(__irq_set_lockdep_class);
#endif