sched: add tree based averages

add support for tree based vruntime averages.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 5 insertions, 1 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index bf85b4b281c5..198b07a6d038 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -399,6 +399,8 @@ enum {
         SCHED_FEAT_SLEEPER_AVG          = 4,
         SCHED_FEAT_SLEEPER_LOAD_AVG     = 8,
         SCHED_FEAT_START_DEBIT          = 16,
+        SCHED_FEAT_USE_TREE_AVG         = 32,
+        SCHED_FEAT_APPROX_AVG           = 64,
 };
 
 const_debug unsigned int sysctl_sched_features =
@@ -406,7 +408,9 @@ const_debug unsigned int sysctl_sched_features =
                 SCHED_FEAT_NEW_FAIR_SLEEPERS    *1 |
                 SCHED_FEAT_SLEEPER_AVG          *0 |
                 SCHED_FEAT_SLEEPER_LOAD_AVG     *1 |
-                SCHED_FEAT_START_DEBIT          *1;
+                SCHED_FEAT_START_DEBIT          *1 |
+                SCHED_FEAT_USE_TREE_AVG         *0 |
+                SCHED_FEAT_APPROX_AVG           *0;
 
 #define sched_feat(x) (sysctl_sched_features & SCHED_FEAT_##x)