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| author |  Claudio Suarez <cssk@net-c.es>
| 2021-09-30 17:10:26 +0200 |
|---|---|---|
| committer |  Thomas Zimmermann <tzimmermann@suse.de>
| 2021-10-13 15:29:23 +0200 |
| commit | b3ec8cdf457e5e63d396fe1346cc788cf7c1b578 (patch) | |
| tree | fc36618fefda6bbe47e46a59e20f2e1744fdf78e /Documentation | |
| parent | drm/locking: add backtrace for locking contended locks without backoff (diff) | |
| download | linux-b3ec8cdf457e5e63d396fe1346cc788cf7c1b578.tar.gz linux-b3ec8cdf457e5e63d396fe1346cc788cf7c1b578.tar.bz2 linux-b3ec8cdf457e5e63d396fe1346cc788cf7c1b578.zip | |
fbdev: Garbage collect fbdev scrolling acceleration, part 1 (from TODO list)
Scroll acceleration is disabled in fbcon by hard-wiring
p->scrollmode = SCROLL_REDRAW. Remove the obsolete code in fbcon.c
and fbdev/core/
Signed-off-by: Claudio Suarez <cssk@net-c.es>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YVXTYqszZix9TxjJ@gineta.localdomain
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/gpu/todo.rst | 13 |
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. |