From d873a7a93cf97fc54bb83b16036dc78ae113c1e8 Mon Sep 17 00:00:00 2001
From: Vincent Guittot <vincent.guittot@linaro.org>
Date: Thu, 15 Jan 2015 11:09:29 +0100
Subject: sched: add SD_PREFER_SIBLING for SMT level

Add the SD_PREFER_SIBLING flag for SMT level in order to ensure that
the scheduler will put at least 1 task per core.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Reviewed-by: Preeti U. Murthy <preeti@linux.vnet.ibm.com>
---
 kernel/sched/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 212077aa4987..2230aa425db7 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5258,6 +5258,7 @@ sd_init(struct sched_domain_topology_level *tl, int cpu)
 	 */
 
 	if (sd->flags & SD_SHARE_CPUCAPACITY) {
+		sd->flags |= SD_PREFER_SIBLING;
 		sd->imbalance_pct = 110;
 		sd->smt_gain = 1178; /* ~15% */
 
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