On 16-Nov-00 John Baldwin wrote:
> jhb         2000/11/15 18:16:45 PST
>   Modified files:
>     sys/alpha/alpha      trap.c 
>     sys/i386/i386        trap.c 
>     sys/ia64/ia64        trap.c 
>     sys/kern             kern_mutex.c kern_shutdown.c kern_sig.c 
>                          kern_subr.c kern_synch.c 
>   Log:
>   Don't release and acquire Giant in mi_switch().  Instead, release and
>   acquire Giant as needed in functions that call mi_switch().  The releases
>   need to be done outside of the sched_lock to avoid potential deadlocks
>   from trying to acquire Giant while interrupts are disabled.
>   Submitted by:       witness

It is now safe to turn on WITNESS in -current kernels without having the
machine panic or lockup....  At least it is on my set of test boxes.  As such,
I plan to turn on the various debugging options in -current's GENERIC sometime
tomorrow (including WITNESS, but without DIAGNOSTIC).


John Baldwin <[EMAIL PROTECTED]> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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