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Message-Id: <1409051215-16788-13-git-send-email-vincent.guittot@linaro.org>
Date: Tue, 26 Aug 2014 13:06:55 +0200
From: Vincent Guittot <vincent.guittot@...aro.org>
To: peterz@...radead.org, mingo@...nel.org,
linux-kernel@...r.kernel.org, preeti@...ux.vnet.ibm.com,
linux@....linux.org.uk, linux-arm-kernel@...ts.infradead.org
Cc: riel@...hat.com, Morten.Rasmussen@....com, efault@....de,
nicolas.pitre@...aro.org, linaro-kernel@...ts.linaro.org,
daniel.lezcano@...aro.org, dietmar.eggemann@....com,
Vincent Guittot <vincent.guittot@...aro.org>
Subject: [PATCH v5 12/12] 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@...aro.org>
---
kernel/sched/core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 7c3b237..ab5ab60 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6093,6 +6093,7 @@ 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% */
--
1.9.1
--
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