On Fri, May 09, 2014 at 03:00:14AM +0400, Kirill Tkhai wrote:
> Sometimes nr_running may cross 2 but interrupt is not being
> sent to rq's cpu. In this case we don't reenable timer.
> Looks like, this may be a reason of rare unexpected effects,
> if nohz is enabled.
> 
> Patch replaces all places of direct changing of nr_running
> and makes add_nr_running() caring about crossing border.
> 
> Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
> CC: Frederic Weisbecker <fweisbec@gmail.com>
> CC: Peter Zijlstra <peterz@infradead.org>
> CC: Ingo Molnar <mingo@kernel.org>

Thanks!