On Tue, 2016-01-19 at 05:41 +0100, Mike Galbraith wrote: > On Mon, 2016-01-18 at 21:18 +0100, Sebastian Andrzej Siewior wrote: > > > > --- a/kernel/sched/core.c > > > +++ b/kernel/sched/core.c > > > @@ -3542,6 +3542,15 @@ asmlinkage __visible void __sched notrac > > > if (likely(!preemptible())) > > > return; > > > > > > +#ifdef CONFIG_PREEMPT_LAZY > > > + /* > > > + * Check for lazy preemption > > > + */ > > > + if (current_thread_info()->preempt_lazy_count && > > > + !test_thread_flag(TIF_NEED_RESCHED)) > > > + return; > > > +#endif > > > + > > > > And this is a new piece. So you forbid that tasks leave the CPU if > > lazy_count > 0. Let me look closed why this is happening and if > > this is > > v4.1 … v4.4 or not. > > That check wants a !rt_task(current) qualifier anyway. (bah, -ESWILLMORECOFFEE) -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
