From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932214AbbB0Pz2 (ORCPT ); Fri, 27 Feb 2015 10:55:28 -0500 Received: from mail-wg0-f44.google.com ([74.125.82.44]:39488 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754857AbbB0PzX (ORCPT ); Fri, 27 Feb 2015 10:55:23 -0500 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 Cc: riel@redhat.com, efault@gmx.de, nicolas.pitre@linaro.org, dietmar.eggemann@arm.com, linaro-kernel@lists.linaro.org, Vincent Guittot Subject: [PATCH v10 10/11] sched: add SD_PREFER_SIBLING for SMT level Date: Fri, 27 Feb 2015 16:54:13 +0100 Message-Id: <1425052454-25797-11-git-send-email-vincent.guittot@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1425052454-25797-1-git-send-email-vincent.guittot@linaro.org> References: <1425052454-25797-1-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 29f7037..753f0a2 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6240,6 +6240,7 @@ 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