xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm: Use drm_mm_nodes() as shorthand for the list of nodes under struct drm_mm

Browse Source 
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 ad579002c8 ("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
This commit is contained in:
Chris Wilson
2016-12-22 08:36:05 +00:00
committed by Daniel Vetter
parent 0bfd4a01a6
commit 2bc98c8651
2 changed files with 19 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
include/drm/drm_mm.h
View File

@@ -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); \