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

[Peter Zijlstra]

On Wed, Jul 26, 2017 at 11:30:32AM -0700, Paul E. McKenney wrote:
> The patch I posted reverts to synchronize_sched() in kernels booted with
> rcupdate.rcu_normal=1.  ;-)

So boot parameters are no solution and are only slightly better than
compile time switches.

What if you have a machine that runs workloads that want both options?
partitioning and containers are somewhat popular these days and system
wide tunables don't work for them.