sched: Remove unused argument dest_cpu to migrate_task()

Remove unused argument, 'dest_cpu' of migrate_task(), and pass runqueue,
as it is always known at the call site.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <201011261237.09187.knikanth@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched.c b/kernel/sched.c
index abe7aec55763b2f1ff48a95546b2abb230308641..35a6373f12653fa39f99c1e2f72af438bd997809 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2061,10 +2061,8 @@ static int migration_cpu_stop(void *data);
  * The task's runqueue lock must be held.
  * Returns true if you have to wait for migration thread.
  */
-static bool migrate_task(struct task_struct *p, int dest_cpu)
+static bool migrate_task(struct task_struct *p, struct rq *rq)
 {
-       struct rq *rq = task_rq(p);
-
        /*
         * If the task is not on a runqueue (and not running), then
         * the next wake-up will properly place the task.
@@ -3224,7 +3222,7 @@ void sched_exec(void)
         * select_task_rq() can race against ->cpus_allowed
         */
        if (cpumask_test_cpu(dest_cpu, &p->cpus_allowed) &&
-           likely(cpu_active(dest_cpu)) && migrate_task(p, dest_cpu)) {
+           likely(cpu_active(dest_cpu)) && migrate_task(p, rq)) {
                struct migration_arg arg = { p, dest_cpu };
 
                task_rq_unlock(rq, &flags);
@@ -5504,7 +5502,7 @@ again:
                goto out;
 
        dest_cpu = cpumask_any_and(cpu_active_mask, new_mask);
-       if (migrate_task(p, dest_cpu)) {
+       if (migrate_task(p, rq)) {
                struct migration_arg arg = { p, dest_cpu };
                /* Need help from migration thread: drop lock and wait. */
                task_rq_unlock(rq, &flags);