From: Richard Kennedy <richard@rsk.demon.co.uk>
Date: Fri, 15 Jul 2011 10:41:31 +0000 (+0100)
Subject: sched: Reorder root_domain to remove 64 bit alignment padding
X-Git-Tag: v3.1-rc1~298^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=26a148eb9c790149750f7e77da0d96029443d400;p=platform%2Fupstream%2Fkernel-adaptation-pc.git

sched: Reorder root_domain to remove 64 bit alignment padding

Reorder root_domain to remove 8 bytes of alignment padding on 64 bit
builds, this shrinks the size from 1736 to 1728 bytes, therefore using
one fewer cachelines.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1310726492.1977.5.camel@castor.rsk
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/sched.c b/kernel/sched.c
index f107204..e3f0bac 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -422,6 +422,7 @@ struct rt_rq {
  */
 struct root_domain {
 	atomic_t refcount;
+	atomic_t rto_count;
 	struct rcu_head rcu;
 	cpumask_var_t span;
 	cpumask_var_t online;
@@ -431,7 +432,6 @@ struct root_domain {
 	 * one runnable RT task.
 	 */
 	cpumask_var_t rto_mask;
-	atomic_t rto_count;
 	struct cpupri cpupri;
 };