1TRACE_IRQ_HANDLER_EX(9)               IRQ              TRACE_IRQ_HANDLER_EX(9)
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NAME

6       trace_irq_handler_exit - called immediately after the irq action
7       handler returns
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SYNOPSIS

10       void trace_irq_handler_exit(int irq, struct irqaction * action,
11                                   int ret);
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ARGUMENTS

14       irq
15           irq number
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17       action
18           pointer to struct irqaction
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20       ret
21           return value
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DESCRIPTION

24       If the ret value is set to IRQ_HANDLED, then we know that the
25       corresponding action->handler scuccessully handled this irq. Otherwise,
26       the irq might be a shared irq line, or the irq was not handled
27       successfully. Can be used in conjunction with the irq_handler_entry to
28       understand irq handler latencies.
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AUTHORS

31       Jason Baron <jbaron@redhat.com>
32           Author.
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34       William Cohen <wcohen@redhat.com>
35           Author.
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38Kernel Hackers Manual 2.6.       November 2011         TRACE_IRQ_HANDLER_EX(9)
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