linux-kernel - Re: [git] CFS-devel, latest code

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Date:	Sun, 30 Sep 2007 21:18:16 +0200
From:	Dmitry Adamushko <dmitry.adamushko@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [git] CFS-devel, latest code


and this one,

make dequeue_entity() / enqueue_entity() and update_stats_dequeue() /
update_stats_enqueue() look similar, structure-wise.

zero effect, functionally-wise.

Signed-off-by: Dmitry Adamushko <dmitry.adamushko@...il.com>

---
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 2674e27..ed75a04 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -366,7 +366,6 @@ update_stats_wait_end(struct cfs_rq *cfs_rq, struct sched_entity *se)
 static inline void
 update_stats_dequeue(struct cfs_rq *cfs_rq, struct sched_entity *se)
 {
-	update_curr(cfs_rq);
 	/*
 	 * Mark the end of the wait period if dequeueing a
 	 * waiting task:
@@ -493,7 +492,7 @@ static void
 enqueue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int wakeup)
 {
 	/*
-	 * Update the fair clock.
+	 * Update run-time statistics of the 'current'.
 	 */
 	update_curr(cfs_rq);
 
@@ -512,6 +511,11 @@ enqueue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int wakeup)
 static void
 dequeue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int sleep)
 {
+	/*
+	 * Update run-time statistics of the 'current'.
+	 */
+	update_curr(cfs_rq);
+
 	update_stats_dequeue(cfs_rq, se);
 	if (sleep) {
 #ifdef CONFIG_SCHEDSTATS
@@ -775,8 +779,7 @@ static void yield_task_fair(struct rq *rq)
 	if (likely(!sysctl_sched_compat_yield)) {
 		__update_rq_clock(rq);
 		/*
-		 * Dequeue and enqueue the task to update its
-		 * position within the tree:
+		 * Update run-time statistics of the 'current'.
 		 */
 		update_curr(cfs_rq);
 

---

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