Hello,
I'm trying to develop a small application on RTlinux and i have
four questions.
a) Is there a way for my periodic RT task to figure out what was the state
of the processor before the interruption? kernel or user mode?
b) What is the difference between local/global and soft/hard irq in the
source of RTlinux.
c) I want my RT task to do the following thing.
i) disable the delivery of interrupts to linux, by marking them pending
ii) enable the interrupts to linux, and deliver the pending signals to
linux
[ BUT hardware interrupts should be caught by RT linux. ]
d) Is it possible for my RT task to call some kernel functions, and if so
what are they? For instance under what circumstances can I call
schedule() from my RT task.
TIA
Koxaras Aris
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