SYNOPSIS

int drm_gem_create_mmap_offset(struct drm_gem_object * obj);

ARGUMENTS

obj

obj in question

DESCRIPTION

GEM memory mapping works by handing back to userspace a fake mmap offset it can use in a subsequent mmap(2) call. The DRM core code then looks up the object based on the offset and sets up the various memory mapping structures.

This routine allocates and attaches a fake offset for obj.

AUTHORS

Jesse Barnes <jesse.barnes@intel.com>

Intel Corporation,

Initial version

Laurent Pinchart <laurent.pinchart@ideasonboard.com>

Ideas on board SPRL,

Driver internals

Daniel Vetter <daniel.vetter@ffwll.ch>

Intel Corporation,

Contributions all over the place

COPYRIGHT