Re: [PATCH] locking/rwsem: Make owner store task pointer of last owning reader

[Davidlohr Bueso]

On Mon, 10 Sep 2018, Peter Zijlstra wrote:

> [ RT has something along those lines, and I have half a patch that
>  starts doing that too, but I never found enough time to really work on
>  it :-( ]

But don't rt rwsems act pretty much like a regular mutex in that it only
allows readers to nest, not share the lock because of priority inversion
scenarios.

Also, wrt rtmutex, will that top-spinner thing ever make it in?

Thanks,
Davidlohr