Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753867AbaJGMPn (ORCPT ); Tue, 7 Oct 2014 08:15:43 -0400 Received: from mail-wi0-f172.google.com ([209.85.212.172]:60314 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753396AbaJGMPW (ORCPT ); Tue, 7 Oct 2014 08:15:22 -0400 From: Vincent Guittot To: peterz@infradead.org, mingo@kernel.org, linux-kernel@vger.kernel.org, preeti@linux.vnet.ibm.com, Morten.Rasmussen@arm.com, kamalesh@linux.vnet.ibm.com, linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org Cc: riel@redhat.com, efault@gmx.de, nicolas.pitre@linaro.org, linaro-kernel@lists.linaro.org, daniel.lezcano@linaro.org, dietmar.eggemann@arm.com, pjt@google.com, bsegall@google.com, Vincent Guittot Subject: [PATCH v7 7/7] sched: add SD_PREFER_SIBLING for SMT level Date: Tue, 7 Oct 2014 14:13:37 +0200 Message-Id: <1412684017-16595-8-git-send-email-vincent.guittot@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1412684017-16595-1-git-send-email-vincent.guittot@linaro.org> References: <1412684017-16595-1-git-send-email-vincent.guittot@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Reviewed-by: Preeti U. Murthy --- kernel/sched/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 37fb92c..731f2ad 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6165,6 +6165,7 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/