On Thu, Mar 31, 2016 at 06:12:38PM -0400, Waiman Long wrote: > >>However, if we allow a limited number of readers to spin on the > >>lock simultaneously, we can eliminates some of the reader-to-reader > >>latencies at the expense of a bit more cacheline contention and > >>probably more power consumption. > >So the embedded people might not like that much. > > It could be. It is always a compromise.
So ARM is the only one that currently waits without spinning and could care; so Will might have an opinion. One 'solution' would be to make this an optional feature.
