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authorDave Airlie <airlied@redhat.com>2021-11-05 04:50:09 +0100
committerDave Airlie <airlied@redhat.com>2021-11-05 04:50:15 +0100
commit5275a99e35e5a1d1f68038b0560d0e7eaf624e86 (patch)
tree36109ac35e451d3b710a85ab57b3e8be01730bea /Documentation/gpu
parentMerge tag 'amd-drm-next-5.16-2021-10-29' of https://gitlab.freedesktop.org/ag... (diff)
parentfbdev: Garbage collect fbdev scrolling acceleration, part 1 (from TODO list) (diff)
downloadlinux-5275a99e35e5a1d1f68038b0560d0e7eaf624e86.tar.xz
linux-5275a99e35e5a1d1f68038b0560d0e7eaf624e86.zip
Merge tag 'drm-misc-next-2021-10-14' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for 5.16: UAPI Changes: Cross-subsystem Changes: Core Changes: - fbdev: Fix double-free, Remove unused scrolling acceleration - locking: improve logging for contented locks without backoff - dma-buf: Add dma_resv_for_each_fence iterator, and conversion of users Driver Changes: - nouveau: Various code style improvements - bridge: HPD improvements for lt9611uxc, eDP aux-bus support for ps8640, lvds-codec data-mapping selection support - panels: Vivax TPC-9150, Innolux G070Y2-T02, LOGIC Technologies LTTD800480070-L2RT, Sharp LS060T1SX01, Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20211014120452.2wicnt6hobu3kbwb@gilmour
Diffstat (limited to 'Documentation/gpu')
-rw-r--r--Documentation/gpu/todo.rst13
1 files changed, 8 insertions, 5 deletions
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 6613543955e9..60d1d7ee0719 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -314,16 +314,19 @@ Level: Advanced
Garbage collect fbdev scrolling acceleration
--------------------------------------------
-Scroll acceleration is disabled in fbcon by hard-wiring p->scrollmode =
-SCROLL_REDRAW. There's a ton of code this will allow us to remove:
+Scroll acceleration has been disabled in fbcon. Now it works as the old
+SCROLL_REDRAW mode. A ton of code was removed in fbcon.c and the hook bmove was
+removed from fbcon_ops.
+Remaining tasks:
-- lots of code in fbcon.c
-
-- a bunch of the hooks in fbcon_ops, maybe the remaining hooks could be called
+- a bunch of the hooks in fbcon_ops could be removed or simplified by calling
directly instead of the function table (with a switch on p->rotate)
- fb_copyarea is unused after this, and can be deleted from all drivers
+- after that, fb_copyarea can be deleted from fb_ops in include/linux/fb.h as
+ well as cfb_copyarea
+
Note that not all acceleration code can be deleted, since clearing and cursor
support is still accelerated, which might be good candidates for further
deletion projects.