linux-kernel - [RFC PATCH 1/2] sched: change usage of rt_rq->rt_se to rt_rq->tg->rt

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Date:	Fri, 29 Jan 2010 14:57:52 +0800
From:	Yong Zhang <yong.zhang0@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	rusty <rusty@...tcorp.com.au>
Subject: [RFC PATCH 1/2] sched: change usage of rt_rq->rt_se to 
	rt_rq->tg->rt_se[cpu]

This is the first step to remove rt_rq member rt_se because
it have the same meaning with tg->rt_se[cpu]. And the latter
style is also used by CFS.

Signed-off-by: Yong Zhang <yong.zhang0@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Rusty Russell <rusty@...tcorp.com.au>
---
 kernel/sched_rt.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index f48328a..b175a98 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -199,8 +199,11 @@ static void dequeue_rt_entity(struct
sched_rt_entity *rt_se);

 static void sched_rt_rq_enqueue(struct rt_rq *rt_rq)
 {
+	int this_cpu = smp_processor_id();
 	struct task_struct *curr = rq_of_rt_rq(rt_rq)->curr;
-	struct sched_rt_entity *rt_se = rt_rq->rt_se;
+	struct sched_rt_entity *rt_se;
+
+	rt_se = rt_rq->tg->rt_se[this_cpu];

 	if (rt_rq->rt_nr_running) {
 		if (rt_se && !on_rt_rq(rt_se))
@@ -212,7 +215,10 @@ static void sched_rt_rq_enqueue(struct rt_rq *rt_rq)

 static void sched_rt_rq_dequeue(struct rt_rq *rt_rq)
 {
-	struct sched_rt_entity *rt_se = rt_rq->rt_se;
+	int this_cpu = smp_processor_id();
+	struct sched_rt_entity *rt_se;
+
+	rt_se = rt_rq->tg->rt_se[this_cpu];

 	if (rt_se && on_rt_rq(rt_se))
 		dequeue_rt_entity(rt_se);
-- 
1.6.3.3
--
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