TRACE_IRQ_HANDLER_EN(9) IRQ TRACE_IRQ_HANDLER_EN(9)
NAME
trace_irq_handler_entry - called immediately before the irq action handler
SYNOPSIS
void trace_irq_handler_entry(int irq, struct irqaction * action);
ARGUMENTS
irq
irq number
action
pointer to struct irqaction
DESCRIPTION
The struct irqaction pointed to by action contains various information about the handler, including the device name, action->name, and the
device id, action->dev_id. When used in conjunction with the irq_handler_exit tracepoint, we can figure out irq handler latencies.
AUTHORS
Jason Baron <jbaron@redhat.com>
Author.
William Cohen <wcohen@redhat.com>
Author.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 TRACE_IRQ_HANDLER_EN(9)
