sched: introduce avg_wakeup

Introduce a new avg_wakeup statistic.

avg_wakeup is a measure of how frequently a task wakes up other tasks, it
represents the average time between wakeups, with a limit of avg_runtime
for when it doesn't wake up anybody.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4cae9b81a1f..daf4e07bc97 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1046,6 +1046,9 @@ struct sched_entity {
         u64                     exec_max;
         u64                     slice_max;
 
+        u64                     start_runtime;
+        u64                     avg_wakeup;
+
         u64                     nr_migrations;
         u64                     nr_migrations_cold;
         u64                     nr_failed_migrations_affine;