trace_irq_handler_exit (9) - Linux Manuals

trace_irq_handler_exit: called immediately after the irq action handler returns

Command to display trace_irq_handler_exit manual in Linux: $ man 9 trace_irq_handler_exit

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 successfully 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.

AUTHORS

Jason Baron <jbaron [at] redhat.com>

: Author.

William Cohen <wcohen [at] redhat.com>

: Author.