Hello, Christoph. On Thu, Dec 22, 2011 at 08:58:43AM -0600, Christoph Lameter wrote: > Well that would be a pretty nice simplification of the API. > Replace the fallback code for the preempt safe ones with the > irqsafe fallbacks, then drop the irqsafe variants from percpu.h. Yeah, it seems we're going that direction. > > > The way that the cmpxchg things are used is also similar to transactional > > > memory that is becoming available in the next generation of processors by > > > Intel and that is already available in the current generation of powerpc > > > processors by IBM. It is a way to avoid locking overhead. > > > > Hmmm... how about removing the ones which aren't currently in use? > > Yep. Could easily be done. We can resurrect the stuff as needed when other > variants become necessary. In particular the _and and _or etc stuff was > just added to be backward compatible with the old per cpu and local_t > interfaces. There may be no use cases left. Yeap, and that one too. Maybe we can finally kill the duplicate confusing static/dynamic accessors too. I'm planning to get to it in several weeks but if anyone can beat me to it, please go ahead. Thank you. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
