Another simple question about LXRT
mantegazza at aero.polimi.it
Tue Jul 5 16:20:49 CEST 2005
Stefan Frank wrote:
> Thanks for the answer.
> Actually I'm not interested in the figures and numbers, but the theoretic
> aspect of LXRT. Is the LXRT task in the RTAI domain handled like a task from
> a RTAI kernel module? If it doesn't leave the the hard-realtime mode?
Notice that in kernel you can have 2 kind of tasks, RTAI-proper and
Linux kernel threads, all working in hard real time. The choice is is
the sceduler you use:
-rtai_lxrt: user space hardened Linux user space tasks and kernel threads
- rtai_ksched: user space hardened Linux processes and kernel threads +
RTAI proper tasks, all available as you like.
Naturally it is possible to use RTAI is soft mode in any Linux user
space task and kernel threads, also. I've found it easies a lot writing
standard kernel drivers with a supporting bottom half kthread, as it
allows to crap you right hear using your right hand.
More information about the Rtai