On Tue, 14 Jun 2016, Waiman Long wrote:
This patch provides a way for the kernel code to designate specific rwsems to be more aggressive in term of optimistic spinning that the writers will continue to spin for some additional count-based time to see if it can get the lock before sleeping. This aggressive spinning mode should only be used on rwsems where the readers are unlikely to go to sleep.
Yikes, exposing this sort of thing makes me _very_ uneasy, not to mention the ad-hoc nature and its easiness to mess up. I'm not really for this, even if it shows extraordinary performance boosts on benchmarks. Thanks, Davidlohr -- 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
