[RFQ] make witness panic an option

[Attilio Rao]

On Thu, Nov 15, 2012 at 8:51 PM, Andriy Gapon <avg at freebsd.org> wrote:
> on 15/11/2012 22:00 Adrian Chadd said the following:
>> But I think my change is invaluable for development, where you want to
>> improve and debug the locking and lock interactions of a subsystem.
>
> My practical experience was that if you mess up one lock in one place, then it
> is a total mess further on.  but apparently you've got a different practical
> experience :)
> What would indeed be invaluable to _me_ - if the LOR messages also produced the
> stack(s) where a supposedly correct lock order was learned.

Please note that the "supposedly correct lock order", as for the
definition that it is correct, can be used in several different
stacks. I don't see the point of saving it somewhere.
The only helpful case would be if the "wrong order" is catched first.
If this is really the case, I suggest you to force the order you
expect in the static table so that the first time the wrong order
happens it yells.

Attilio


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