Re: [RFC][PATCH] avoid refcounting the lazy tlb mm struct

Hi Nick, > On big systems, the mm refcount can become highly contented when doing > a lot of context switching with threaded applications (particularly > switching between the idle thread and an application thread). > > Not doing lazy tlb at all slows switching down quite a bit, so I > wonder if

[RFC][PATCH] avoid refcounting the lazy tlb mm struct

On big systems, the mm refcount can become highly contented when doing a lot of context switching with threaded applications (particularly switching between the idle thread and an application thread). Not doing lazy tlb at all slows switching down quite a bit, so I wonder if we can avoid the refco