linux-kernel - [patch 4/4] BFS 420: fix try_to_wake_up

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Message-ID: <CAJd=RBDWf8yYsSj0h5nyDqqC2K2s5mx7xVZuvTBqfk2UL-cMLA@mail.gmail.com>
Date:	Fri, 25 May 2012 21:37:45 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>,
	Hillf Danton <dhillf@...il.com>
Subject: [patch 4/4] BFS 420: fix try_to_wake_up_local

It is changed to be the same behavior with ttwu.

--- a/kernel/sched/bfs.c	Mon May 14 20:50:38 2012
+++ b/kernel/sched/bfs.c	Fri May 25 20:28:00 2012
@@ -1630,18 +1630,16 @@ static void try_to_wake_up_local(struct
 	lockdep_assert_held(&grq.lock);

 	if (!(p->state & TASK_NORMAL))
-		return;
+		goto out;

-	if (!task_queued(p)) {
-		if (likely(!task_running(p))) {
-			schedstat_inc(rq, ttwu_count);
-			schedstat_inc(rq, ttwu_local);
-		}
-		ttwu_activate(p, rq, false);
-		ttwu_stat(p, smp_processor_id(), true);
-		success = true;
-	}
+	if (task_queued(p) || task_running(p))
+		goto out;
+
+	ttwu_activate(p, rq, false);
+	success = true;
+out:
 	ttwu_post_activation(p, rq, success);
+	ttwu_stat(p, smp_processor_id(), success);
 }

 /**
--
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