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[209.132.180.67]) by mx.google.com with ESMTP id wp10si1149854pbc.17.2014.03.12.23.03.14; Wed, 12 Mar 2014 23:03:14 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753305AbaCMGDF (ORCPT + 26 others); Thu, 13 Mar 2014 02:03:05 -0400 Received: from mail-pa0-f50.google.com ([209.85.220.50]:55693 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751592AbaCMGDE (ORCPT ); Thu, 13 Mar 2014 02:03:04 -0400 Received: by mail-pa0-f50.google.com with SMTP id kq14so634397pab.9 for ; Wed, 12 Mar 2014 23:03:03 -0700 (PDT) X-Received: by 10.66.139.100 with SMTP id qx4mr1963861pab.141.1394690583010; Wed, 12 Mar 2014 23:03:03 -0700 (PDT) Received: from localhost.localdomain ([116.232.110.156]) by mx.google.com with ESMTPSA id ix2sm3136331pbc.45.2014.03.12.23.02.34 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 12 Mar 2014 23:03:02 -0700 (PDT) From: Alex Shi To: mingo@redhat.com, peterz@infradead.org, morten.rasmussen@arm.com Cc: vincent.guittot@linaro.org, daniel.lezcano@linaro.org, fweisbec@gmail.com, linux@arm.linux.org.uk, tony.luck@intel.com, fenghua.yu@intel.com, james.hogan@imgtec.com, alex.shi@linaro.org, jason.low2@hp.com, viresh.kumar@linaro.org, hanjun.guo@linaro.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, akpm@linux-foundation.org, arjan@linux.intel.com, pjt@google.com, fengguang.wu@intel.com, linaro-kernel@lists.linaro.org, wangyun@linux.vnet.ibm.com, mgorman@suse.de Subject: [PATCH 4/8] sched: remove LB_BIAS Date: Thu, 13 Mar 2014 13:57:25 +0800 Message-Id: <1394690249-14130-5-git-send-email-alex.shi@linaro.org> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1394690249-14130-1-git-send-email-alex.shi@linaro.org> References: <1394690249-14130-1-git-send-email-alex.shi@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: alex.shi@linaro.org X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.220.174 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Don't need LB_BIAS now. so remove it. Signed-off-by: Alex Shi --- Documentation/timers/NO_HZ.txt | 2 -- kernel/sched/features.h | 1 - 2 files changed, 3 deletions(-) diff --git a/Documentation/timers/NO_HZ.txt b/Documentation/timers/NO_HZ.txt index cca122f..84dd71d 100644 --- a/Documentation/timers/NO_HZ.txt +++ b/Documentation/timers/NO_HZ.txt @@ -177,8 +177,6 @@ not come for free: slightly differently than those for non-adaptive-tick CPUs. This might in turn perturb load-balancing of real-time tasks. -6. The LB_BIAS scheduler feature is disabled by adaptive ticks. - Although improvements are expected over time, adaptive ticks is quite useful for many types of real-time and compute-intensive applications. However, the drawbacks listed above mean that adaptive ticks should not diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 5716929..fe3c1cb 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -43,7 +43,6 @@ SCHED_FEAT(ARCH_POWER, true) SCHED_FEAT(HRTICK, false) SCHED_FEAT(DOUBLE_TICK, false) -SCHED_FEAT(LB_BIAS, true) /* * Decrement CPU power based on time not spent running tasks