[OpenAFS-devel] global lock and smp

chas williams - CONTRACTOR chas@cmf.nrl.navy.mil
Mon, 29 Aug 2005 14:02:50 -0400


In message <20050829175300.96CF41BACE@citi.umich.edu>,Jim Rees writes:
>Am I correct in thinking that the global lock is only required for SMP?  If
>I have a traditional unix kernel that's not pre-emptive while in kernel
>mode, can I make the global lock a no-op?

for most platforms, the answer is yes apparently.  its not clear to me
that this is big savings as far as time.  particularly since you can
write code that would be broken on SMP machines.