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 <fweis...@gmail.com>
Cc: Steven Rostedt <rost...@goodmis.org>
Cc: Paul E. McKenney <paul...@linux.vnet.ibm.com>
Cc: Ingo Molnar <mi...@kernel.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Borislav Petkov <b...@alien8.de>
Cc: Li Zhong <zh...@linux.vnet.ibm.com>
Cc: Mike Galbraith <efa...@gmx.de>
Cc: Kevin Hilman <khil...@linaro.org>
---
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
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