nohz: Switch to nohz full remote kick on timer enqueue

[karo-tx-linux.git] / kernel / sched / core.c

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 3bdf01b494fe29c267a0abe73828b02a799a737d..feb54965e16f9c96e873efac8b291717c3b92d1d 100644 (file)
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -684,10 +684,16 @@ static void wake_up_idle_cpu(int cpu)
 
 static bool wake_up_full_nohz_cpu(int cpu)
 {
+       /*
+        * We just need the target to call irq_exit() and re-evaluate
+        * the next tick. The nohz full kick at least implies that.
+        * If needed we can still optimize that later with an
+        * empty IRQ.
+        */
        if (tick_nohz_full_cpu(cpu)) {
                if (cpu != smp_processor_id() ||
                    tick_nohz_tick_stopped())
-                       smp_send_reschedule(cpu);
+                       tick_nohz_full_kick_cpu(cpu);
                return true;
        }