sched: Hide runqueues from direct reference at source code level for __raw_get_cpu_var()

Hide __raw_get_cpu_var() as well - thus all the direct
references to runqueues will abstracted out.

Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
LKML-Reference: <20090629.144457.886429910353660979.mitake@dcl.info.waseda.ac.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched.c b/kernel/sched.c
index 168b2680ae27fa8f9bc2039602d1f6b8229e99de..ebc5151f88c857f315b98f4007e403385051652c 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -692,6 +692,7 @@ static inline int cpu_of(struct rq *rq)
 #define this_rq()              (&__get_cpu_var(runqueues))
 #define task_rq(p)             cpu_rq(task_cpu(p))
 #define cpu_curr(cpu)          (cpu_rq(cpu)->curr)
+#define raw_rq()               (&__raw_get_cpu_var(runqueues))
 
 inline void update_rq_clock(struct rq *rq)
 {
@@ -6669,7 +6670,7 @@ EXPORT_SYMBOL(yield);
  */
 void __sched io_schedule(void)
 {
-       struct rq *rq = &__raw_get_cpu_var(runqueues);
+       struct rq *rq = raw_rq();
 
        delayacct_blkio_start();
        atomic_inc(&rq->nr_iowait);
@@ -6681,7 +6682,7 @@ EXPORT_SYMBOL(io_schedule);
 
 long __sched io_schedule_timeout(long timeout)
 {
-       struct rq *rq = &__raw_get_cpu_var(runqueues);
+       struct rq *rq = raw_rq();
        long ret;
 
        delayacct_blkio_start();