On Fri, Aug 19, 2016 at 12:45:27PM -0700, Linus Torvalds wrote: > On Fri, Aug 19, 2016 at 12:33 PM, Peter Zijlstra <[email protected]> wrote: > > > > That seems more messy to me.. > > Can't we just say that we always spin? Are there any really valid > cases where spinning isn't ok? > > We've historically disabled spinning when mutex debugging is enabled, > but since the spinning is limited anyway, couldn't we just spin even > with debugging enabled? > > I hate how these patches are trying to solve a problem that doesn't > even happen under normal circumstances, and add special-case code for > something that is already a special-case condition. So rather than > adding even more special cases, could we look at _removing_ the > special cases that cause problems instead?
So I think I have a bunch of patches that solves the fundamental issues, _However_... they're quite invasive and would need some serious benchmarking. I'll post them in a separate thread as RFC..
