sched: Rename ttwu_post_activation() to ttwu_do_wakeup()

The ttwu_post_activation() code does the core wakeup, it sets TASK_RUNNING
and performs wakeup-preemption, so give is a more descriptive name.

Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110405152729.434609705@chello.nl

Author: Peter Zijlstra

kernel/sched.c

@@ -2456,8 +2456,11 @@ static void ttwu_activate(struct rq *rq, struct task_struct *p, int en_flags)
 		wq_worker_waking_up(p, cpu_of(rq));
 }
 
+/*
+ * Mark the task runnable and perform wakeup-preemption.
+ */
 static void
-ttwu_post_activation(struct task_struct *p, struct rq *rq, int wake_flags)
+ttwu_do_wakeup(struct rq *rq, struct task_struct *p, int wake_flags)
 {
 	trace_sched_wakeup(p, true);
 	check_preempt_curr(rq, p, wake_flags);
@@ -2562,7 +2565,7 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags)
 
 	ttwu_activate(rq, p, ENQUEUE_WAKEUP | ENQUEUE_WAKING);
 out_running:
-	ttwu_post_activation(p, rq, wake_flags);
+	ttwu_do_wakeup(rq, p, wake_flags);
 	success = 1;
 	__task_rq_unlock(rq);
 
@@ -2602,7 +2605,7 @@ static void try_to_wake_up_local(struct task_struct *p)
 	if (!p->on_rq)
 		ttwu_activate(rq, p, ENQUEUE_WAKEUP);
 
-	ttwu_post_activation(p, rq, 0);
+	ttwu_do_wakeup(rq, p, 0);
 	ttwu_stat(p, smp_processor_id(), 0);
 out:
 	raw_spin_unlock(&p->pi_lock);