[PATCH v2 6/6] sched: Default enable HRTICK

[Peter Zijlstra]

... for generic entry architectures. This decouples preemption from
CONFIG_HZ, leaving only the periodic load-balancer and various
accounting things relying on the tick.

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
 kernel/sched/features.h |    5 +++++
 1 file changed, 5 insertions(+)

--- a/kernel/sched/features.h
+++ b/kernel/sched/features.h
@@ -63,8 +63,13 @@ SCHED_FEAT(DELAY_ZERO, true)
  */
 SCHED_FEAT(WAKEUP_PREEMPTION, true)
 
+#ifdef TIF_HRTIMER_REARM
+SCHED_FEAT(HRTICK, true)
+SCHED_FEAT(HRTICK_DL, true)
+#else
 SCHED_FEAT(HRTICK, false)
 SCHED_FEAT(HRTICK_DL, false)
+#endif
 
 /*
  * Decrement CPU capacity based on time not spent running tasks