TRACE_IRQ_HANDLER_EX(9) IRQ TRACE_IRQ_HANDLER_EX(9)NAMEtrace_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.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 TRACE_IRQ_HANDLER_EX(9)