'\" t
.\"     Title: trace_irq_handler_exit
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: April 2019
.\"    Manual: IRQ
.\"    Source: Kernel Hackers Manual 4.9.168
.\"  Language: English
.\"
.TH "TRACE_IRQ_HANDLER_EX" "9" "April 2019" "Kernel Hackers Manual 4\&.9\&." "IRQ"
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.SH "NAME"
trace_irq_handler_exit \- called immediately after the irq action handler returns
.SH "SYNOPSIS"
.HP \w'void\ trace_irq_handler_exit('u
.BI "void trace_irq_handler_exit(int\ " "irq" ", struct\ irqaction\ *\ " "action" ", int\ " "ret" ");"
.SH "ARGUMENTS"
.PP
\fIirq\fR
.RS 4
irq number
.RE
.PP
\fIaction\fR
.RS 4
pointer to struct irqaction
.RE
.PP
\fIret\fR
.RS 4
return value
.RE
.SH "DESCRIPTION"
.PP
If the
\fIret\fR
value is set to IRQ_HANDLED, then we know that the corresponding
\fIaction\fR\->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\&.
.SH "AUTHORS"
.PP
\fBJason Baron\fR <\&jbaron@redhat.com\&>
.RS 4
Author.
.RE
.PP
\fBWilliam Cohen\fR <\&wcohen@redhat.com\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br