1. NAME▲

trace_irq_handler_exit - called immediately after the irq action handler returns

2. SYNOPSIS ▲

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

3. ARGUMENTS ▲

irq
    irq number

action
    pointer to struct irqaction

ret
    return value

4. DESCRIPTION ▲

If the ret value is set to IRQ_HANDLED, then we know that the corresponding action->handler scuccessully 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.

5. AUTHORS ▲

Jason Baron <>
    Author.

William Cohen <>
    Author.

6. COPYRIGHT ▲