What is cool is I found the rt-preempt kernel from the synaptic package 
manager - installed it - built linuxcnc to use it.  it just worked.  
(this was on wheezy)

(I was testing the 7i80 ethernet device)

http://electronicsam.com/images/KandT/testing/ethlatestbuild.png

sam

On 07/06/2014 08:58 AM, Jeff Epler wrote:
> Since it's been about a week, here are some incremental updates about
> "uspace":
>
> There's now a wiki page, which covers how to obtain and build the
> branch:  http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Uspace
>
> The branch has been rebased several more times, squashing out bugs and
> adding a few new features.  Some more important items:
>   - the code taken from ubc3 for pci access actually had *two different*
>     implementations.  I removed the older one, leaving only the one
>     needed for hostmot2.  Other PCI drivers will have to adapt to the
>     APIs used by hostmot2 if they are to run under uspace.  While I was
>     there, I believe I lifted the "one board only" limitation in that
>     code, but I haven't been able to test it.
>   - Realtime delays are detected and reported
>   - new C and Python APIs report whether the RTOS runs in userspace or in
>     kernel space
>   - The parport detection/registration routines (hal_parport_get, now
>     rtapi_parport_get) are implemented for uspace, so parport drivers can
>     now be ported to uspace.
>
> Chris R. and Seb K. have both provided valuable code review.  Peter W.
> and Sam K. have also done testing.  And I've probably overlooked
> somebody--no slight is intended.
>
> The list of hardware that has been "tested, at least briefly", has grown:
>   mesa 5i20 (pci)
>   mesa 5i25 (pci)
>   mesa 7i43 (parallel port)
>   parport
>   serport
> .. and in fact, Chris and Seb each dared to run mills with the
> branch, at least briefly.
>
> MichaƂ G.'s branch for mesa 7i80 (ethernet-attached hardware) works when
> rebased onto the uspace branch.  However, it's not merge-ready, because
> it breaks all the "traditional" mesa cards.  This is in the
> "rtos-uspace-7i80" branch if you'd like to try it, but (see below) I
> won't be maintaining this branch at the moment.
>
> The delta compared to upstream is growing:
>   44 commits, 115 files changed, 4360 insertions(+), 3973 deletions(-)
> though, happily, the deletions grew much faster than the insertions, as
> I deleted an unnecessary copy of the hal_parport driver thta lived at
> src/hal/simdrivers.  About 10% of insertions are in documentation.
>
> I've agreed informally with Seb that when the time comes to merge, I'll
> merge "rtos-uspace-apis".  As a result, I'm no longer going to
> separately maintain the "rtos-uspace" branch.  Similarly, I'm not going
> to continue rebasing the "rtos-uspace-7i80" branch.  This streamlines my
> workflow and reduces the chance of mistakes.
>
> I'm not sure when this will be pushed to master branch, but not before
> Seb completes his code review and I address the issues he raises.
> I welcome code reviews, results of testing, and other comments from
> anyone on the list as well.  There's a trivial merge conflict in
> src/Makefile, otherwise it merges cleanly.
>
> Jeff
>
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Turn processes into business applications with Bonita BPM Community Edition
Quickly connect people, data, and systems into organized workflows
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http://p.sf.net/sfu/Bonitasoft
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