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authorFrederic Weisbecker <fweisbec@gmail.com>2013-08-02 18:29:56 +0200
committerIngo Molnar <mingo@kernel.org>2013-08-16 17:55:33 +0200
commitc2e7fcf53c3cb02b4ada1c66a9bc8a4d97d58aba (patch)
tree84cfdcc6d8f29883e7a7d93e2d6028bffa15ff85
parentMerge branch 'timers/nohz-v3' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff)
downloadlinux-c2e7fcf53c3cb02b4ada1c66a9bc8a4d97d58aba.tar.xz
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nohz: Include local CPU in full dynticks global kick
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. So 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 <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Kevin Hilman <khilman@linaro.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1375460996-16329-4-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--kernel/time/tick-sched.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index adea6fc3ba2a..3612fc77f834 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -246,6 +246,7 @@ void tick_nohz_full_kick_all(void)
preempt_disable();
smp_call_function_many(tick_nohz_full_mask,
nohz_full_kick_ipi, NULL, false);
+ tick_nohz_full_kick();
preempt_enable();
}