On Thu, May 19, 2016 at 08:36:49AM +0100, David Woodhouse wrote:

On Wed, 2016-05-18 at 19:32 +0200, Peter Zijlstra wrote:

quoted

Does this generate 'sane' code for LL/SC archs? That is, a single LL/SC
loop and not a loop around an LL/SC cmpxchg.

The whole point of using compiler intrinsics and letting the compiler
actually see what's going on... is that it bloody well should :)

Should and does be two different things of course ;-)