trace_irq_handler_exit man page on Scientific

trace_irq_handler_exit man page on Scientific

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TRACE_IRQ_HANDLER_EX(9)		      IRQ	       TRACE_IRQ_HANDLER_EX(9)

NAME
       trace_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.

AUTHOR
       Jason Baron <jbaron@redhat.com>
	   Author.

COPYRIGHT
Kernel Hackers Manual 2.6.	 November 2013	       TRACE_IRQ_HANDLER_EX(9)

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