On Mon, Nov 16, 2015 at 04:09:10PM -0800, Jacob Pan wrote: > On Mon, 16 Nov 2015 23:01:12 +0100 (CET) > Thomas Gleixner <t...@linutronix.de> wrote: > > > > For the second case, which is much more rare, I think we do have > > > next timer exactly one tick away. Just don't know why tick will > > > continue into idle loop. > > > > Well, it should not be hard to figure that out. There are not so many > > checks involved when tick_nohz_irq_exit() is called.
> Thanks for the tip, I found the cause is in > int idle_cpu(int cpu) Which one? That is, I cannot find a idle_cpu() call from tick_nohz_irq_exit(). -- 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/
