diff options
Diffstat (limited to 'kernel/irq/irqdesc.c')
| -rw-r--r-- | kernel/irq/irqdesc.c | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 02b446a21ce6..2eb076f4a566 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -924,15 +924,7 @@ static bool irq_is_nmi(struct irq_desc *desc) return desc->istate & IRQS_NMI; } -/** - * kstat_irqs - Get the statistics for an interrupt - * @irq: The interrupt number - * - * Returns the sum of interrupt counts on all cpus since boot for - * @irq. The caller must ensure that the interrupt is not removed - * concurrently. - */ -unsigned int kstat_irqs(unsigned int irq) +static unsigned int kstat_irqs(unsigned int irq) { struct irq_desc *desc = irq_to_desc(irq); unsigned int sum = 0; @@ -951,13 +943,14 @@ unsigned int kstat_irqs(unsigned int irq) } /** - * kstat_irqs_usr - Get the statistics for an interrupt + * kstat_irqs_usr - Get the statistics for an interrupt from thread context * @irq: The interrupt number * * Returns the sum of interrupt counts on all cpus since boot for @irq. - * Contrary to kstat_irqs() this can be called from any context. - * It uses rcu since a concurrent removal of an interrupt descriptor is - * observing an rcu grace period before delayed_free_desc()/irq_kobj_release(). + * + * It uses rcu to protect the access since a concurrent removal of an + * interrupt descriptor is observing an rcu grace period before + * delayed_free_desc()/irq_kobj_release(). */ unsigned int kstat_irqs_usr(unsigned int irq) { |