linux-kernel - [patch] BFS 421: use NS_TO

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Message-ID: <CAJd=RBDh44Ka2YPrEGy1SYBngNDmD76O92+D11f8nJh-oNjf4g@mail.gmail.com>
Date:	Thu, 14 Jun 2012 20:23:10 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>,
	Hillf Danton <dhillf@...il.com>
Subject: [patch] BFS 421: use NS_TO_MS

Lets easy reader once more.


--- a/kernel/sched/bfs.c	Thu Jun 14 20:01:50 2012
+++ b/kernel/sched/bfs.c	Thu Jun 14 20:03:42 2012
@@ -992,15 +992,11 @@ static void activate_task(struct task_st
 {
 	update_clocks(rq);

-	/*
-	 * Sleep time is in units of nanosecs, so shift by 20 to get a
-	 * milliseconds-range estimation of the amount of time that the task
-	 * spent sleeping:
-	 */
+	/* Sleep time is tracked in units of nanosecs, but reported in ms */
 	if (unlikely(prof_on == SLEEP_PROFILING)) {
 		if (p->state == TASK_UNINTERRUPTIBLE)
 			profile_hits(SLEEP_PROFILING, (void *)get_wchan(p),
-				     (rq->clock - p->last_ran) >> 20);
+					NS_TO_MS(rq->clock - p->last_ran));
 	}

 	p->prio = effective_prio(p);
--
--
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