Re: [PATCH RFC v3 03/13] rcu-tasks: Add a Tasks RCU implementation for reader-marked trampolines

["Paul E. McKenney" <paulmck@xxxxxxxxxx>]

On Thu, Sep 17, 2026 at 08:45:36PM +0200, Frederic Weisbecker wrote:
> Le Thu, Sep 17, 2026 at 08:40:10AM -0700, Paul E. McKenney a écrit :
> > > > Trampolines that transfer control to tracing code could supply the 
> > > > needed
> > > > cleanup call.  But last I checked, there were trampolines that 
> > > > transferred
> > > > directly back to the original code, with no opportunity for cleaning up.
> > > > 
> > > > Or am I still missing a trick here?
> > > 
> > > You're right. So we'll indeed need to reuse the deferred qs points here.
> > 
> > Except this is getting a bit involved.
> > 
> > Don't get me wrong, if Josef is happy to take this on, far be it from me
> > to stand in his way.  But if not, we should be willing to treat this
> > optimization as a follow-on effort, whether by Josef or someone else.
> 
> Sure, I guess I can try the follow-on, especially if it leads to removing
> all this RCU tasks black magic.

That sounds most excellent, thank you!

                                                        Thanx, Paul