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SubjectRe: [PATCH tip/core/rcu 02/15] rcu: Use timer as backstop for NOCB deferred wakeups
On Wed, Jul 26, 2017 at 07:09:34PM -0400, Steven Rostedt wrote:
> On Wed, 26 Jul 2017 14:47:41 -0700
> "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
>
>
> > > It is much lighter weight than a timer setup.
> >
> > How much lighter weight? In other words, what fraction of the
> > timers have to avoid being cancelled for irq_work to break even?
>
> No idea. I guess that would be a nice academic exercise ;-)

Hmmm... I guess I should try it and see what it does, though that
would be some merge window after the upcoming one. If it is indeed
simpler, I might forgive some possible performance shortcomings...

Thanx, Paul

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