.\" $OpenBSD: intr_barrier.9,v 1.2 2015/09/13 17:55:42 jmc Exp $
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.\" Copyright (c) 2015 Mark Kettenis
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.Dd $Mdocdate: September 13 2015 $
.Dt INTR_BARRIER 9
.Os
.Sh NAME
.Nm intr_barrier
.Nd interrupt barrier
.Sh SYNOPSIS
.In machine/intr.h
.Ft void
.Fn intr_barrier "void *ih"
.Sh DESCRIPTION
This function guarantees that any interrupt handler invocations for the
interrupt handler specified by
.Fa ih
has finished before it returns.
The cookie passed to
.Fn intr_barrier
should be the value returned when the interrupt handler was established,
for example the return value of
.Xr pci_intr_establish 9 .
.Sh CONTEXT
.Fn intr_barrier
can be called from process context.
.Sh SEE ALSO
.Xr pci_intr_establish 9 ,
.Xr spl 9