Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932984Ab3DDCDA (ORCPT ); Wed, 3 Apr 2013 22:03:00 -0400 Received: from mga03.intel.com ([143.182.124.21]:29737 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932881Ab3DDCC6 (ORCPT ); Wed, 3 Apr 2013 22:02:58 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,404,1363158000"; d="scan'208";a="280534608" 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, morten.rasmussen@arm.com 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, len.brown@intel.com, rafael.j.wysocki@intel.com, jkosina@suse.cz, clark.williams@gmail.com, tony.luck@intel.com, keescook@chromium.org, mgorman@suse.de, riel@redhat.com Subject: [patch v7 20/21] sched: don't do power balance on share cpu power domain Date: Thu, 4 Apr 2013 10:01:01 +0800 Message-Id: <1365040862-8390-21-git-send-email-alex.shi@intel.com> X-Mailer: git-send-email 1.7.12 In-Reply-To: <1365040862-8390-1-git-send-email-alex.shi@intel.com> References: <1365040862-8390-1-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 047a1b3..3a0284b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3503,7 +3503,7 @@ 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 */ @@ -4410,8 +4410,9 @@ 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/