tick_nohz_full_kick_all() is useful to notify all full dynticks CPUs that there is a system state change to checkout before re-evaluating the need for the tick.
Unfortunately this is implemented using smp_call_function_many() that ignores the local CPU. This CPU also needs to re-evaluate the tick. on_each_cpu_mask() is not useful either because we don't want to re-evaluate the tick state in place but asynchronously from an IPI to avoid messing up with any random locking scenario. Sol lets call tick_nohz_full_kick() from tick_nohz_full_kick_all() so that the usual irq work takes care of it. Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Paul E. McKenney <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Li Zhong <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Kevin Hilman <[email protected]> --- kernel/time/tick-sched.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index e80183f..30849d4 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -244,6 +244,7 @@ void tick_nohz_full_kick_all(void) preempt_disable(); smp_call_function_many(nohz_full_mask, nohz_full_kick_ipi, NULL, false); + tick_nohz_full_kick(); preempt_enable(); } -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
