From: Sven Schnelle <svens@stackframe.org>
To: Helge Deller <deller@gmx.de>
Cc: Hamza Mahfooz <someguy@effective-light.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org,
Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: fbdev: Garbage collect fbdev scrolling acceleration
Date: Thu, 13 Jan 2022 22:46:03 +0100 [thread overview]
Message-ID: <87zgnz71ic.fsf@x1.stackframe.org> (raw)
In-Reply-To: <feea8303-2b83-fc36-972c-4fc8ad723bde@gmx.de> (Helge Deller's message of "Thu, 13 Jan 2022 17:36:22 +0100")
Helge Deller <deller@gmx.de> 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.
WARNING: multiple messages have this Message-ID (diff)
From: Sven Schnelle <svens@stackframe.org>
To: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org,
Geert Uytterhoeven <geert@linux-m68k.org>,
dri-devel@lists.freedesktop.org,
Thomas Zimmermann <tzimmermann@suse.de>,
Hamza Mahfooz <someguy@effective-light.com>
Subject: Re: fbdev: Garbage collect fbdev scrolling acceleration
Date: Thu, 13 Jan 2022 22:46:03 +0100 [thread overview]
Message-ID: <87zgnz71ic.fsf@x1.stackframe.org> (raw)
In-Reply-To: <feea8303-2b83-fc36-972c-4fc8ad723bde@gmx.de> (Helge Deller's message of "Thu, 13 Jan 2022 17:36:22 +0100")
Helge Deller <deller@gmx.de> 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.
next prev parent reply other threads:[~2022-01-13 22:32 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-13 16:36 fbdev: Garbage collect fbdev scrolling acceleration Helge Deller
2022-01-13 21:46 ` Sven Schnelle [this message]
2022-01-13 21:46 ` Sven Schnelle
2022-01-19 15:39 ` Daniel Vetter
2022-01-19 15:39 ` Daniel Vetter
2022-01-19 16:15 ` Sven Schnelle
2022-01-19 16:15 ` Sven Schnelle
2022-01-19 16:21 ` Daniel Vetter
2022-01-19 16:21 ` Daniel Vetter
2022-01-19 16:33 ` Sven Schnelle
2022-01-19 16:33 ` Sven Schnelle
2022-01-24 18:27 ` Geert Uytterhoeven
2022-01-24 18:27 ` Geert Uytterhoeven
2022-01-24 19:58 ` Daniel Vetter
2022-01-24 19:58 ` Daniel Vetter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87zgnz71ic.fsf@x1.stackframe.org \
--to=svens@stackframe.org \
--cc=deller@gmx.de \
--cc=dri-devel@lists.freedesktop.org \
--cc=geert@linux-m68k.org \
--cc=linux-fbdev@vger.kernel.org \
--cc=someguy@effective-light.com \
--cc=tzimmermann@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.