From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Fri, 27 Jun 2008 11:41:33 +0000 (+0200)
Subject: sched: disable source/target_load bias
X-Git-Tag: v2.6.27-rc1~1105^2~18
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=93b75217df39e6d75889cc6f8050343286aff4a5;p=pandora-kernel.git

sched: disable source/target_load bias

The bias given by source/target_load functions can be very large, disable
it by default to get faster convergence.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/sched.c b/kernel/sched.c
index 10d43f5bf0fc..6c5eb3bc37e0 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2000,7 +2000,7 @@ static unsigned long source_load(int cpu, int type)
 	struct rq *rq = cpu_rq(cpu);
 	unsigned long total = weighted_cpuload(cpu);
 
-	if (type == 0)
+	if (type == 0 || !sched_feat(LB_BIAS))
 		return total;
 
 	return min(rq->cpu_load[type-1], total);
@@ -2015,7 +2015,7 @@ static unsigned long target_load(int cpu, int type)
 	struct rq *rq = cpu_rq(cpu);
 	unsigned long total = weighted_cpuload(cpu);
 
-	if (type == 0)
+	if (type == 0 || !sched_feat(LB_BIAS))
 		return total;
 
 	return max(rq->cpu_load[type-1], total);
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