John Baldwin 57621b8b35 - Place the gcc memory barrier hint in the right place in the 80386 version
of atomic_store_rel().
- Use the 80386 versions of atomic_load_acq() and atomic_store_rel() that
  do not use serializing instructions on all UP kernels since a UP machine
  does need to synchronize with other CPUs.  This trims lots of cycles from
  spin locks on UP kernels among other things.

Benchmarked by:	rwatson
2004-11-11 22:42:25 +00:00
..
2004-11-10 12:28:06 +00:00
2004-11-11 04:53:46 +00:00
2004-10-01 05:01:00 +00:00