diff options
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/Kconfig | 3 | ||||
| -rw-r--r-- | kernel/irq/chip.c | 11 |
2 files changed, 14 insertions, 0 deletions
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index 48ad25f5fa5..9149be729e4 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig @@ -35,6 +35,9 @@ config AUTO_IRQ_AFFINITY config HARDIRQS_SW_RESEND def_bool n +config IRQ_PREFLOW_FASTEOI + def_bool n + config SPARSE_IRQ bool "Support sparse irq numbering" depends on HAVE_SPARSE_IRQ diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 2a36038b8f5..08be5d182be 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -471,6 +471,16 @@ out_unlock: } EXPORT_SYMBOL_GPL(handle_level_irq); +#ifdef CONFIG_IRQ_PREFLOW_FASTEOI +static inline void preflow_handler(struct irq_desc *desc) +{ + if (desc->preflow_handler) + desc->preflow_handler(&desc->irq_data); +} +#else +static inline void preflow_handler(struct irq_desc *desc) { } +#endif + /** * handle_fasteoi_irq - irq handler for transparent controllers * @irq: the interrupt number @@ -503,6 +513,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc) mask_irq(desc); goto out; } + preflow_handler(desc); handle_irq_event(desc); out: desc->irq_data.chip->irq_eoi(&desc->irq_data); |