Thread (8 messages) 8 messages, 4 authors, 2022-01-24

Re: fbdev: Garbage collect fbdev scrolling acceleration

From: Sven Schnelle <hidden>
Date: 2022-01-13 22:02:20
Also in: dri-devel

Helge Deller [off-list ref] writes:
I may have missed some discussions, but I'm objecting against this patch:

	b3ec8cdf457e5 ("fbdev: Garbage collect fbdev scrolling acceleration, part 1 (from TODO list)")

Can we please (partly) revert it and restore the scrolling behaviour,
where fbcon uses fb_copyarea() to copy the screen contents instead of
redrawing the whole screen?

I'm fine with dropping the ypan-functionality.

Maybe on fast new x86 boxes the performance difference isn't huge,
but for all old systems, or when emulated in qemu, this makes
a big difference.

Helge
I second that. For most people, the framebuffer isn't important as
they're mostly interested in getting to X11/wayland as fast as possible.
But for systems like servers without X11 it's nice to have a fast
console.
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