RE: Preemptible question.

["Allen Curtis" <acurtis@onz.com>]

> >   Are all processors ables to take advantage of a preemptible
> > kernel? or there are any (old) processor which give the same
> > results with the new feature activated and deactivated?.
> >
> > Is the preemptible feature a question of kernel only? or
> > play too others parameters?.
>
> All processes on the system may take advantage of kernel preemption.
>
> I think your question is basically "does the preemptible kernel require
> any API changes" and the answer is no.  When the preempt-kernel patch is
> applied, all processes automatically benefit.

The API is the same but you still need to recompile all your modules with
the patched kernel. (It is a good idea to bump the exta version information
in the Makefile for the same reason.) Old modules may not load correctly
with a preemptive patched kernel.

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