TRACE_IRQ_HANDLER_EX(9) IRQ TRACE_IRQ_HANDLER_EX(9)
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 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.
AUTHORS
Jason Baron <jbaron@redhat.com>
Author.
William Cohen <wcohen@redhat.com>
Author.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 TRACE_IRQ_HANDLER_EX(9)
