K 10
svn:author
V 7
attilio
K 8
svn:date
V 27
2009-10-09T15:51:40.364425Z
K 7
svn:log
V 634
atomic_cmpset_barr_* was added in order to cope with compilers willing to
specify their own version of atomic_cmpset_* which could have been
different than the membar version.

Right now, however, FreeBSD is bound mostly to GCC-like compilers and
it is desired to add new support and compat shim mostly when there is
a real necessity, in order to avoid too much compatibility bloats.

In this optic, bring back atomic_cmpset_{acq, rel}_* to be the same as
atomic_cmpset_* and unwind the atomic_cmpset_barr_* introduction.

Requested by:	jhb
Reviewed by:	jhb
Tested by:	Giovanni Trematerra <giovanni dot trematerra at
		gmail dot com>

END