Re: [PATCH 5/5 v2] rcu: Fix dyntick-idle tracing

From: Steven Rostedt
Date: Fri Apr 07 2017 - 11:29:50 EST


On Fri, 7 Apr 2017 08:09:22 -0700
"Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx> wrote:

> > >
> > > Yeah, I am a bit concerned about idle-entry latency...
> > >
> >
> > Which should now be fine because of the inlined this_cpu_inc/dec()
> > which is very efficient and made for fast paths like this.
>
> OK, I am willing to let people complain if they can measure the
> difference. If they can measure the difference, there are some things
> we can do.

Again, I was getting this_cpu_inc/dec confused with __this_cpu_inc/dec.
I'll update my patch to fix that.

-- Steve