Hi Geert,
On Fr, 2014-05-30 at 16:28 +0200, Geert Uytterhoeven wrote:
Hi Manuel,
>
> On Fri, May 30, 2014 at 3:27 PM, Manuel Schölling
> <manuel.schoelling@xxxxxx> wrote:
> > Add a scrollback buffers for each VGA console. The benefit is that
> > the scrollback history is not flushed when switching between
consoles
> > but is persistent.
> > The buffers are allocated on demand when a new console is opened.
>
> Thanks for your patch!
>
> I see two issues with this feature:
> 1. Before, the single (default 64 KiB) buffer was allocated at
startup.
> Now you will allocate a buffer each time a new console is opened.
> Depending on memory fragmentation, this may fail.
Indeed, if allocation fails, scrollbuffer[vc_num]->data will stay NULL
and scrolling will be disabled for that console. Is that ok or would you
prefer another behavior of the kernel?
> 2. People with RAM-constrained systems may not like this.
> Can it be a config option?
Sure, I will add an option for that.
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 --
geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a
hacker. But
> when I'm talking to journalists I just say "programmer" or something
like that.
> -- Linus Torvalds
>
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