On Saturday 05 October 2013 12:04:59 Belli Button did opine:
> Hey no! We love PNCconf, for an initial setup it the fastest method to
> get about 90% done. Life would be miserable without it (really).
I hereby nominate that for the understatement of the year.
I hope also that I have headed off a proposal from one of the guys at
Intel, who submitted some patches yesterday to lay the groundwork for a
power management scheme that shuts off inactive ports.
Since LCNC's use of the parport from an isolcpus=corenum core, is
completely invisible to normal tools like top, I pointed out that powering
down a port in very heavy use had the potential to maim/kill somebody, and
damage half a million dollars worth of machinery. I hope I got the point
across that there were more places where linux was used than just on his
lappy at the library where you need every milliampere hour you can get when
you can't plug it in. Then he wanted to marry the control of such a PM
facility to root, and I blew up again. If the control is there, and
someone builds a kernel with it not disabled, the potential is there. It
absolutely MUST be user controllable if implemented. Not even negotiable
without that IMO.
I do not know how LCNC goes about locking the port(s) for its exclusive
use, but I'd hate like hell for us to find out linux can shut down the
hardware interface we're using by running Stuarts 26 foot table into the
end stops at the servo's full speed. That should be grounds for organizing
a hunting party.
How is the I/O card for the BBB coming along?
Cheers, Gene
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
You will be audited by the Internal Revenue Service.
A pen in the hand of this president is far more
dangerous than 200 million guns in the hands of
law-abiding citizens.
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