From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Mon, 15 Oct 2007 15:00:10 +0000 (+0200)
Subject: sched debug: check spread
X-Git-Tag: v2.6.24-rc1~1289^2~76
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ddc972975091ba5f839bf24d0f9ef54fe90ee741;p=pandora-kernel.git

sched debug: check spread

debug feature: check how well we schedule within a reasonable
vruntime 'spread' range. (note that CPU overload can increase
the spread, so this is not a hard condition, but normal loads
should be within the spread.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---

diff --git a/kernel/sched.c b/kernel/sched.c
index fe1165b226a1..213294fdcd0f 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -250,6 +250,9 @@ struct cfs_rq {
 	 * It is set to NULL otherwise (i.e when none are currently running).
 	 */
 	struct sched_entity *curr;
+
+	unsigned long nr_spread_over;
+
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	struct rq *rq;	/* cpu runqueue to which this cfs_rq is attached */
 
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