L4Linux console using CPU

Adam Lackorzynski adam at os.inf.tu-dresden.de
Fri Jun 24 00:22:43 CEST 2005

On Fri Jun 24, 2005 at 00:00:37 +0200, Bert van Leeuwen wrote:
> OK, that works as far as CPU usage is concerned, but (as advertised) I now 
> no longer get any updates in my L4Linux console (i.e. it is blank 
> permanently), so it is not usable anymore. Is there any way to have a text 
> L4Linux console which does not use up CPU, or should I just not ever switch 
> focus to the L4Linux framebuffer console?

I see now that 2.4 doesn't quite support all the feature like
rectangular updates as 2.6 does. I.e. for 2.4 there are only full
periodic updates possible, even for the console.
One way could be to increase the sleep value to e.g. 1000 (1sec) instead
of 0.

There's also a console driver in l4/pkg/l4con/examples/linux24_stub_lib
that is supposed to work with 2.4 but I'm not sure it does right now. To
use it, enable the CONFIG_L4_DROPSCON option in L4Linux so that it links
to the stub lib.

Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/

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