Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757314Ab3C3Ogg (ORCPT ); Sat, 30 Mar 2013 10:36:36 -0400 Received: from mga14.intel.com ([143.182.124.37]:7911 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757256Ab3C3Ogc (ORCPT ); Sat, 30 Mar 2013 10:36:32 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,378,1363158000"; d="scan'208";a="220568405" From: Alex Shi To: mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de, akpm@linux-foundation.org, arjan@linux.intel.com, bp@alien8.de, pjt@google.com, namhyung@kernel.org, efault@gmx.de Cc: vincent.guittot@linaro.org, gregkh@linuxfoundation.org, preeti@linux.vnet.ibm.com, viresh.kumar@linaro.org, linux-kernel@vger.kernel.org, alex.shi@intel.com Subject: [patch v6 21/21] sched: don't do power balance on share cpu power domain Date: Sat, 30 Mar 2013 22:35:08 +0800 Message-Id: <1364654108-16307-22-git-send-email-alex.shi@intel.com> X-Mailer: git-send-email 1.7.12 In-Reply-To: <1364654108-16307-1-git-send-email-alex.shi@intel.com> References: <1364654108-16307-1-git-send-email-alex.shi@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1514 Lines: 41 Packing tasks among such domain can't save power, just performance losing. So no power balance on them. Signed-off-by: Alex Shi --- kernel/sched/fair.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 430904b..88c8bd6 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3513,7 +3513,7 @@ static int get_cpu_for_power_policy(struct sched_domain *sd, int cpu, policy = get_sd_sched_balance_policy(sd, cpu, p, sds); if (policy != SCHED_POLICY_PERFORMANCE && sds->group_leader) { - if (wakeup) + if (wakeup && !(sd->flags & SD_SHARE_CPUPOWER)) new_cpu = find_leader_cpu(sds->group_leader, p, cpu, policy); /* for fork balancing and a little busy task */ @@ -4420,8 +4420,9 @@ static unsigned long task_h_load(struct task_struct *p) static inline void init_sd_lb_power_stats(struct lb_env *env, struct sd_lb_stats *sds) { - if (sched_balance_policy == SCHED_POLICY_PERFORMANCE || - env->idle == CPU_NOT_IDLE) { + if (sched_balance_policy == SCHED_POLICY_PERFORMANCE + || env->sd->flags & SD_SHARE_CPUPOWER + || env->idle == CPU_NOT_IDLE) { env->flags &= ~LBF_POWER_BAL; env->flags |= LBF_PERF_BAL; return; -- 1.7.12 -- 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/