> My understanding is the kernel uses interrupts to count the time and to
> trigger timer routines - but these routine are executed in the context they
> were registered. A timer created by a process executes in process
> context. A driver registered timer executes in kernel context (not interrupt).
> Am I wrong?

You need to be clear with yourself on the meaning and the
types/differences of different contexts first, because its really
confusing when you say "kernel context (not interrupt)".

> properly. If there is some data to be read from the device it stores it in a
> circular buffer.

If you're doing it that way then its fine and would work. I agree with
your method, but I don't with your understanding of a context. It
would be good to read up a little more on this and then come back and
ask more questions.

Thanks,
-Joel

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