Name

trace_irq_handler_exit — called immediately after the irq action handler returns

Synopsis

void trace_irq_handler_exit (int irq,
 struct irqaction * action,
 int ret);
 

Arguments

irq

irq number

action

pointer to struct irqaction

ret

return value

Description

If the ret value is set to IRQ_HANDLED, then we know that the corresponding action->handler successfully handled this irq. Otherwise, the irq might be a shared irq line, or the irq was not handled successfully. Can be used in conjunction with the irq_handler_entry to understand irq handler latencies.