NetBSD-5.0.2/share/man/man9/kmem_free.9

.\"	$NetBSD: kmem_free.9,v 1.5 2008/01/03 15:59:57 yamt Exp $
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.\" Copyright (c)2006 YAMAMOTO Takashi,
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.\" ------------------------------------------------------------
.Dd January 4, 2008
.Dt KMEM_FREE 9
.Os
.\" ------------------------------------------------------------
.Sh NAME
.Nm kmem_free
.Nd free kernel wired memory
.\" ------------------------------------------------------------
.Sh SYNOPSIS
.In sys/kmem.h
.\" - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
.Ft void
.Fn kmem_free \
"void *p" "size_t size"
.\" ------------------------------------------------------------
.Sh DESCRIPTION
.Fn kmem_free
frees kernel wired memory allocated by
.Fn kmem_alloc
or
.Fn kmem_zalloc
so that it can be used for other purposes.
It takes the following arguments.
.Bl -tag -width kmflags
.It Fa p
The pointer to the memory being freed.
It must be the one returned by
.Fn kmem_alloc
or
.Fn kmem_zalloc .
.It Fa size
The size of the memory being freed, in bytes.
It must be the same as the
.Fa size
argument used for
.Fn kmem_alloc
or
.Fn kmem_zalloc
when the memory was allocated.
.El
.Pp
Freeing
.Dv NULL
is illegal.
.\" ------------------------------------------------------------
.Sh SEE ALSO
.Xr intro 9 ,
.Xr kmem_alloc 9 ,
.Xr kmem_zalloc 9 ,
.Xr memoryallocators 9
.\" ------------------------------------------------------------
.Sh CAVEATS
.Fn kmem_free
can not be used from interrupt context.