[RFC][PATCH 0/5] arch: atomic rework

[Torvald Riegel]

On Thu, 2014-02-20 at 00:30 -0800, Paul E. McKenney wrote:
> Well, all the compilers currently convert consume to acquire, so you have
> your wish there.  Of course, that also means that they generate actual
> unneeded memory-barrier instructions, which seems extremely sub-optimal
> to me.

GCC doesn't currently, but it also doesn't seem to track the
dependencies, but that's a bug:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59448