diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-12-22 08:36:05 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-12-27 12:28:44 +0100 |
| commit | 2bc98c86517b08304b5008f427b751c08659b100 (patch) | |
| tree | 3e0b3013d7fa0411878e42f87e7a7b252e2b5c8a /include/drm/drm_mm.h | |
| parent | 0bfd4a01a6605849d7c282c37503292469fab0be (diff) | |
drm: Use drm_mm_nodes() as shorthand for the list of nodes under struct drm_mm
Fairly commonly we want to inspect the node list on the struct drm_mm,
which is buried within an embedded node. Bring it to the surface with a
bit of syntatic sugar.
Note this was intended to be split from commit ad579002c8ec ("drm: Add
drm_mm_for_each_node_safe()") before being applied, but my timing sucks.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-3-chris@chris-wilson.co.uk
Diffstat (limited to 'include/drm/drm_mm.h')
| -rw-r--r-- | include/drm/drm_mm.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index 5c7f15875b6a..f6a68ed5ecaf 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -180,7 +180,19 @@ static inline u64 drm_mm_hole_node_end(const struct drm_mm_node *hole_node) return __drm_mm_hole_node_end(hole_node); } -#define __drm_mm_nodes(mm) (&(mm)->head_node.node_list) +/** + * drm_mm_nodes - list of nodes under the drm_mm range manager + * @mm: the struct drm_mm range manger + * + * As the drm_mm range manager hides its node_list deep with its + * structure, extracting it looks painful and repetitive. This is + * not expected to be used outside of the drm_mm_for_each_node() + * macros and similar internal functions. + * + * Returns: + * The node list, may be empty. + */ +#define drm_mm_nodes(mm) (&(mm)->head_node.node_list) /** * drm_mm_for_each_node - iterator to walk over all allocated nodes @@ -191,7 +203,7 @@ static inline u64 drm_mm_hole_node_end(const struct drm_mm_node *hole_node) * with list_for_each, so not save against removal of elements. */ #define drm_mm_for_each_node(entry, mm) \ - list_for_each_entry(entry, __drm_mm_nodes(mm), node_list) + list_for_each_entry(entry, drm_mm_nodes(mm), node_list) /** * drm_mm_for_each_node_safe - iterator to walk over all allocated nodes @@ -203,7 +215,7 @@ static inline u64 drm_mm_hole_node_end(const struct drm_mm_node *hole_node) * with list_for_each_safe, so save against removal of elements. */ #define drm_mm_for_each_node_safe(entry, next, mm) \ - list_for_each_entry_safe(entry, next, __drm_mm_nodes(mm), node_list) + list_for_each_entry_safe(entry, next, drm_mm_nodes(mm), node_list) #define __drm_mm_for_each_hole(entry, mm, hole_start, hole_end, backwards) \ for (entry = list_entry((backwards) ? (mm)->hole_stack.prev : (mm)->hole_stack.next, struct drm_mm_node, hole_stack); \ |