On Fri, May 05, 2017 at 06:28:45PM +0300, Yury Norov wrote: > On Fri, May 05, 2017 at 01:26:40PM +0100, Will Deacon wrote: > > On Fri, May 05, 2017 at 01:53:03PM +0200, Peter Zijlstra wrote: > > > On Thu, May 04, 2017 at 11:28:09PM +0300, Yury Norov wrote: > > > > I don't think > > > > it's a real use case to have ticket spinlocks and queued rwlocks > > > > > > There's nothing wrong with that combination. In fact, we merged qrwlock > > > much earlier than qspinlock. > > > > ... and that's almost certainly the direction we'll go on arm64 too, not > > least because the former are a lot easier to grok. > > > > Will > > Hmm. Then I think I have to split patch 3 to rwlock and spinlock > parts, and allow user to enable them independently in config. To be honest, I'm going to spend some time looking at the qrwlock code again before I enable it for arm64, so I don't think you need to rush to resend patches since I suspect I'll have a few in the meantime. Will
