On Tue, Jul 29, 2014 at 10:14:16AM +0200, Peter Zijlstra wrote:
> On Mon, Jul 28, 2014 at 03:56:12PM -0700, Paul E. McKenney wrote:
> > @@ -254,6 +254,8 @@ void rcu_check_callbacks(int cpu, int user)
> > rcu_sched_qs(cpu);
> > else if (!in_softirq())
> > rcu_bh_qs(cpu);
> > + if (user)
> > + rcu_note_voluntary_context_switch(current);
> > }
>
> There's nothing like sending email you can't find something... :-)
Well, this is unfortunately only a partial solution. It does not handle
the NO_HZ_FULL scheduling-clock-free usermode execution. I have ink on
paper indicating a couple of ways to do that, but figured I should get
feedback on this stuff before going too much farther.
Thanx, Paul
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