SMP deadlocks

[Mike Jakubik]

Julian Elischer said:

> ok, here's the patch.. http://people.freebsd.org/~dwhite/smp_rv_mtx.patch
>
>
> if you don't know how to turn on pre-emption you probably don't have it
> on...  :) (it's disabled for now  in i386/include/param.h from memory)

In that case i do not have it on, but I am having trouble replicating the
problem now. I have rebooted to the old kernel, without debugging. And i
still cant replicate the problem when doing a simultaneous make -j4
buildworld and buildkernel. And to top it off, the customer expects the
server in production in a few days :P If i can replicate the problem, i
will try these patches. FYI The system has frozen previously during normal
functions, not when doing compiles, but this seems to be very
intermittent.