On Mon, 16 Nov 2015, Jacob Pan 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,
tglx
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