Re: crazy idea: big percpu lock (Re: task isolation)

Peter Zijlstra
2015-10-09T09:09:09Z

On Thu, Oct 08, 2015 at 02:25:23PM -0700, Andy Lutomirski wrote:
> I want to propose a new primitive that might go a long way toward
> solving this issue. The new primitive would be called the "big percpu
> lock".

Never, ever, combine big and lock :-) You want small granular locks, big
locks are a guaranteed recipe for pain.