sched: Hide runqueues from direct refer at source code level

There are some points which refer the per-cpu value "runqueues" directly.
sched.c provides nice abstraction, such as cpu_rq() and this_rq(),
so we should use these macros when looking runqueues.
Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
LKML-Reference: <20090617.222055.374768827975756908.mitake@dcl.info.waseda.ac.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/sched_debug.c

@@ -162,7 +162,7 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 {
 	s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
 		spread, rq0_min_vruntime, spread0;
-	struct rq *rq = &per_cpu(runqueues, cpu);
+	struct rq *rq = cpu_rq(cpu);
 	struct sched_entity *last;
 	unsigned long flags;
 
@@ -191,7 +191,7 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 	if (last)
 		max_vruntime = last->vruntime;
 	min_vruntime = cfs_rq->min_vruntime;
-	rq0_min_vruntime = per_cpu(runqueues, 0).cfs.min_vruntime;
+	rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime;
 	spin_unlock_irqrestore(&rq->lock, flags);
 	SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "MIN_vruntime",
 			SPLIT_NS(MIN_vruntime));
@@ -248,7 +248,7 @@ void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
 
 static void print_cpu(struct seq_file *m, int cpu)
 {
-	struct rq *rq = &per_cpu(runqueues, cpu);
+	struct rq *rq = cpu_rq(cpu);
 
 #ifdef CONFIG_X86
 	{