We can avoid dirtying a rq related cacheline with a simple check, so why not.
Signed-off-by: Gregory Haskins <ghaskins@novell.com>
---
kernel/sched.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index e536142..1058a1f 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -376,7 +376,8 @@ static inline void update_rq_prio(struct rq *rq)
struct rt_prio_array *array = &rq->rt.active;
int prio = sched_find_first_bit(array->bitmap);
- set_rq_prio(rq, prio);
+ if (rq->highest_prio != prio)
+ set_rq_prio(rq, prio);
}
#else
-
