sched: count # of queued RT tasks

This patch adds accounting to keep track of the number of RT tasks running
on a runqueue. This information will be used in later patches.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index 5b3d46574eeb..9dd8d121eea6 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -342,6 +342,7 @@ struct rt_rq {
         struct rt_prio_array active;
         int rt_load_balance_idx;
         struct list_head *rt_load_balance_head, *rt_load_balance_curr;
+        unsigned long rt_nr_running;
 };
 
 /*