Re: [PATCH tip/core/rcu 4/5] sys_membarrier: Add expedited option

[Peter Zijlstra]

On Thu, Jul 27, 2017 at 07:32:05AM -0700, Paul E. McKenney wrote:
> > as per your proposed patch, will spray IPIs to all CPUs and at high
> > rates.
> 
> OK, I have updated my patch to do throttling.

But not respect cpusets. Which is the other important point.

The scheduler based IPIs are limited to where we are allowed to place
tasks (as are the TLB ones for that matter, for the exact same reason).