| trace_irq_handler_entry(9) - phpMan
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 AT redhat.com>
Author.
William Cohen <wcohen AT redhat.com>
Author.
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 TRACE_IRQ_HANDLER_EN(9)
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