Re: [PATCH-tip v3 02/14] locking/rwsem: Make owner available even if !CONFIG_RWSEM_SPIN_ON_OWNER

[Ingo Molnar]

* Waiman Long <longman@xxxxxxxxxx> wrote:

> > BTW, the v3 patch that I posted yesterday should work fine as long as
> > CONFIG_RWSEM_SPIN_ON_OWNER is defined.
> >
> > Cheers,
> > Longman
> >
> Oh, I see that the WIP.locking/core is currently merged into master. I
> would say rwsem part1 patchset and patch 1 of part2 are stable. So I
> would suggest merging those into the the master will be good. The rests
> are still under review until I get an OK from Peter. If they miss the
> next merge window and have to postpone to 5.3, I am fine with that.

So beyond the primary constraint of PeterZ OK-ing it all, there's also 
these two scalability regression reports from the ktest bot:

 [locking/rwsem] 1b94536f2d: stress-ng.bad-altstack.ops_per_sec -32.7% regression
 [locking/rwsem] adc32e8877: will-it-scale.per_thread_ops -21.0% regression

Thanks,

	Ingo