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drm: Export routines for inserting preallocated nodes into the mm manager 

Required by i915 in order to avoid the allocation in the middle of
manipulating the drm_mm lists.

Use a pair of stubs to preserve the existing EXPORT_SYMBOLs for
backporting; to be removed later.

Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
[danvet: bikeshedded-away the atomic parameter, it's not yet used
anywhere.]
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2012-12-07 20:37:06 +00:00 committed by Daniel Vetter
parent b0a2658acb
commit b81034506f
2 changed files with 54 additions and 20 deletions
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49
drivers/gpu/drm/drm_mm.c
View File

@ -184,19 +184,27 @@ EXPORT_SYMBOL(drm_mm_get_block_generic);
* -ENOSPC if no suitable free area is available. The preallocated memory node
* must be cleared.
*/
int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
unsigned long size, unsigned alignment)
int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node,
unsigned long size, unsigned alignment,
unsigned long color)
{
struct drm_mm_node *hole_node;
hole_node = drm_mm_search_free(mm, size, alignment, false);
hole_node = drm_mm_search_free_generic(mm, size, alignment,
color, 0);
if (!hole_node)
return -ENOSPC;
drm_mm_insert_helper(hole_node, node, size, alignment, 0);
drm_mm_insert_helper(hole_node, node, size, alignment, color);
return 0;
}
EXPORT_SYMBOL(drm_mm_insert_node_generic);
int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
unsigned long size, unsigned alignment)
{
return drm_mm_insert_node_generic(mm, node, size, alignment, 0);
}
EXPORT_SYMBOL(drm_mm_insert_node);
static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
@ -275,21 +283,30 @@ EXPORT_SYMBOL(drm_mm_get_block_range_generic);
* -ENOSPC if no suitable free area is available. This is for range
* restricted allocations. The preallocated memory node must be cleared.
*/
int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *node,
unsigned long size, unsigned alignment, unsigned long color,
unsigned long start, unsigned long end)
{
struct drm_mm_node *hole_node;
hole_node = drm_mm_search_free_in_range_generic(mm,
size, alignment, color,
start, end, 0);
if (!hole_node)
return -ENOSPC;
drm_mm_insert_helper_range(hole_node, node,
size, alignment, color,
start, end);
return 0;
}
EXPORT_SYMBOL(drm_mm_insert_node_in_range_generic);
int drm_mm_insert_node_in_range(struct drm_mm *mm, struct drm_mm_node *node,
unsigned long size, unsigned alignment,
unsigned long start, unsigned long end)
{
struct drm_mm_node *hole_node;
hole_node = drm_mm_search_free_in_range(mm, size, alignment,
start, end, false);
if (!hole_node)
return -ENOSPC;
drm_mm_insert_helper_range(hole_node, node, size, alignment, 0,
start, end);
return 0;
return drm_mm_insert_node_in_range_generic(mm, node, size, alignment, 0, start, end);
}
EXPORT_SYMBOL(drm_mm_insert_node_in_range);

25
include/drm/drm_mm.h
View File

@ -158,12 +158,29 @@ static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
return drm_mm_get_block_range_generic(parent, size, alignment, 0,
start, end, 1);
}
extern int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
unsigned long size, unsigned alignment);
extern int drm_mm_insert_node(struct drm_mm *mm,
struct drm_mm_node *node,
unsigned long size,
unsigned alignment);
extern int drm_mm_insert_node_in_range(struct drm_mm *mm,
struct drm_mm_node *node,
unsigned long size, unsigned alignment,
unsigned long start, unsigned long end);
unsigned long size,
unsigned alignment,
unsigned long start,
unsigned long end);
extern int drm_mm_insert_node_generic(struct drm_mm *mm,
struct drm_mm_node *node,
unsigned long size,
unsigned alignment,
unsigned long color);
extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm,
struct drm_mm_node *node,
unsigned long size,
unsigned alignment,
unsigned long color,
unsigned long start,
unsigned long end);
extern void drm_mm_put_block(struct drm_mm_node *cur);
extern void drm_mm_remove_node(struct drm_mm_node *node);
extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new);