On Fri, 2014-02-21 at 17:15 +0800, Lei Wen wrote: > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 235cfa7..af30b6a 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -6883,6 +6883,14 @@ void nohz_balance_enter_idle(int cpu) > if (!cpu_active(cpu)) > return; > > + /* > + * If this cpu is isolated, its rq's sd member would becomes NULL. > + * Base on this observation, we could exclude this cpu from nohz > + * idle balance, so that it would not be disturbed. > + */ > + if (!this_rq()->sd) > + return; > + > if (test_bit(NOHZ_TICK_STOPPED, nohz_flags(cpu))) > return;
What about nohz_balance_exit_idle()? I think Peter queued a patchlet to tell nohz balancing to go away. -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
