On Thu, 25 May 2000, Sotack, John wrote:
> RT-Linux. With the RT-Linux version experience problems the other did not?
> For example, can problems result where existing base Linux device drivers
> will not meet hard deadlines?
Modules included in the kernel tree will be OK, they will be compiled with
-D__RT__ flag, so they will be preemptable by RTL. If you compile modules
distributed separately with -D__RT__ and point then to use include files from
RTL kernel, they will be OK as well. With binary only modules there might be
a problem if they use cli() sti() instructions.
> The ideal case would be that there would be no additional problems with the
> RT-Linux system, and that the only difference is that the base Linux system
> would run slower when the RT portion consumed real time. What is a realistic
> expectation?
This is the case. I am running RH systems with RT kernels. The only problem
might be the need to compile all the modules, and you will need to get
compilation options reasonable. May be, you will need to get source RPM for
the RH kernel and inspect and may be apply additionally some of RH patches.
--
Tomek
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For more information on Real-Time Linux see:
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