forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 2
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
drm: Track drm_mm nodes with an interval tree
In addition to the last-in/first-out stack for accessing drm_mm nodes, we occasionally and in the future often want to find a drm_mm_node by an address. To do so efficiently we need to track the nodes in an interval tree - lookups for a particular address will then be O(lg(N)), where N is the number of nodes in the range manager as opposed to O(N). Insertion however gains an extra O(lg(N)) step for all nodes irrespective of whether the interval tree is in use. For future i915 patches, eliminating the linear walk is a significant improvement. v2: Use generic interval-tree template for u64 and faster insertion. Signed-off-by: Chris Wilson <[email protected]> Cc: David Herrmann <[email protected]> Cc: [email protected] Reviewed-by: David Herrmann <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
- Loading branch information
Showing
2 changed files
with
122 additions
and
23 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters