Re: [RFC PATCH v2 3/5] futex: Throughput-optimized (TO) futexes

From: Thomas Gleixner
Date: Thu Sep 22 2016 - 17:44:07 EST

On Thu, 22 Sep 2016, Davidlohr Bueso wrote:
> On Thu, 22 Sep 2016, Waiman Long wrote:
> > BTW, my initial attempt for the new futex was to use the same workflow as
> > the PI futexes, but use mutex which has optimistic spinning instead of
> > rt_mutex.
> Btw, Thomas, do you still have any interest pursuing this for rtmutexes from
> -rt into mainline? If so I can resend the patches from a while ago.

Certainly yes. My faint memory tells me that there was some potential issue
due to boosting the owner only if it gets scheduled out, but I might be