Re: About test suites for linux hot plug

[David Brownell <david-b@pacbell.net>]

>>	Thanks for your perfect work! I am interested in the Linux hot swap
>>project and now doing some validation work about the compactPCI hot
>>swap. So could you please tell me whether there are some test suites
>>for linux hot plug, if not, I'd like to write some test suites for the
>>project!

To the extent that such tests cover things like verifying that streams
of hotplug events are handled consistently, the latest CVS does have a
simple facility to log events to files like /var/log/hotplug/pci.events
(for CardBus, cPCI, hotplugPCI, etc) or /var/log/hotplug/events (for any
event that doesn't have an agent enabled).

So you can collect hotplug events "live", and then (by writing simple
software) play them back later ... Or just notice what kinds of hotplug
events don't yet have /etc/hotplug/*.agent code.

I hope that facility will evolve -- and not primarily for testing support.

For example, I'd be interested in seeing some daemon thread monitoring
/var/log/hotplug/input.events that's set up as a named fifo, as one way to
solve hotplug's "need multiple security domains" issue.  (That's an area
where anyone who's familiar with those user mode APIs could contribute
useful "seed" code in C, or likely even Perl ...)



> If you take a look at the archives for this list, you will see we just
> talked about this with another intel employee (who you also copied on
> the message) :)
> 
> In short, no there aren't any.  Also, this is probably the wrong list
> for cPCI hotplug specific stuff.

But any test scripts you put together that are general purpose would
likely help down the line.  Both automated "do these events get handled
correctly" scripts, and manual "plug in the adapter and verify that
these N things got set up right".

- Dave







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