'\" t
.\"     Title: drm_mm_for_each_hole
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: DRM Core
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "DRM_MM_FOR_EACH_HOLE" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "DRM Core"
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.SH "NAME"
drm_mm_for_each_hole \- iterator to walk over all holes
.SH "SYNOPSIS"
.HP \w'drm_mm_for_each_hole('u
.BI "drm_mm_for_each_hole(" "entry" ", " "mm" ", " "hole_start" ", " "hole_end" ");"
.SH "ARGUMENTS"
.PP
\fIentry\fR
.RS 4
drm_mm_node used internally to track progress
.RE
.PP
\fImm\fR
.RS 4
drm_mm allocator to walk
.RE
.PP
\fIhole_start\fR
.RS 4
ulong variable to assign the hole start to on each iteration
.RE
.PP
\fIhole_end\fR
.RS 4
ulong variable to assign the hole end to on each iteration
.RE
.SH "DESCRIPTION"
.PP
This iterator walks over all holes in the range allocator\&. It is implemented with list_for_each, so not save against removal of elements\&.
\fIentry\fR
is used internally and will not reflect a real drm_mm_node for the very first hole\&. Hence users of this iterator may not access it\&.
.SH "IMPLEMENTATION NOTE"
.PP
We need to inline list_for_each_entry in order to be able to set hole_start and hole_end on each iteration while keeping the macro sane\&.
.PP
The __drm_mm_for_each_hole version is similar, but with added support for going backwards\&.
.SH "AUTHORS"
.PP
\fBJesse Barnes\fR <\&jesse.barnes@intel.com\&>
.br
Intel Corporation, 
	    
	  
.RS 4
Initial version
.RE
.PP
\fBLaurent Pinchart\fR <\&laurent.pinchart@ideasonboard.com\&>
.br
Ideas on board SPRL, 
	    
	  
.RS 4
Driver internals
.RE
.PP
\fBDaniel Vetter\fR <\&daniel.vetter@ffwll.ch\&>
.br
Intel Corporation, 
	    
	  
.RS 4
Contributions all over the place
.RE
.SH "COPYRIGHT"
.br