SYNOPSIS

void drm_vma_offset_manager_init(struct drm_vma_offset_manager * mgr, unsigned long page_offset, unsigned long size);

ARGUMENTS

mgr

Manager object

page_offset

Offset of available memory area (page-based)

size

Size of available address space range (page-based)

DESCRIPTION

Initialize a new offset-manager. The offset and area size available for the manager are given as page_offset and size. Both are interpreted as page-numbers, not bytes.

Adding/removing nodes from the manager is locked internally and protected against concurrent access. However, node allocation and destruction is left for the caller. While calling into the vma-manager, a given node must always be guaranteed to be referenced.

AUTHORS

Jesse Barnes <[email protected]>
Intel Corporation,         
        

Initial version

Laurent Pinchart <[email protected]>
Ideas on board SPRL,         
        

Driver internals

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