other versions
- wheezy 3.2.78-1
TRACE_IRQ_HANDLER_EN(9) | IRQ | TRACE_IRQ_HANDLER_EN(9) |
NAME¶
trace_irq_handler_entry - called immediately before the irq action handlerSYNOPSIS¶
void
trace_irq_handler_entry(int irq,
struct irqaction * action);
ARGUMENTS¶
irqirq 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¶
March 2016 | Kernel Hackers Manual 3.2. |