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[209.132.180.67]) by mx.google.com with ESMTP id e10si11843660paw.46.2014.04.15.19.46.56; Tue, 15 Apr 2014 19:46:56 -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 S1752357AbaDPCpX (ORCPT + 26 others); Tue, 15 Apr 2014 22:45:23 -0400 Received: from mail-pa0-f43.google.com ([209.85.220.43]:51743 "EHLO mail-pa0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751331AbaDPCoa (ORCPT ); Tue, 15 Apr 2014 22:44:30 -0400 Received: by mail-pa0-f43.google.com with SMTP id bj1so10360676pad.2 for ; Tue, 15 Apr 2014 19:44:30 -0700 (PDT) X-Received: by 10.68.203.135 with SMTP id kq7mr5590582pbc.85.1397616270141; Tue, 15 Apr 2014 19:44:30 -0700 (PDT) Received: from alex-shi.Home ([116.232.95.240]) by mx.google.com with ESMTPSA id sv10sm43373627pbc.74.2014.04.15.19.44.24 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 15 Apr 2014 19:44:29 -0700 (PDT) From: Alex Shi To: mingo@redhat.com, peterz@infradead.org, morten.rasmussen@arm.com, vincent.guittot@linaro.org, daniel.lezcano@linaro.org, efault@gmx.de Cc: wangyun@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, mgorman@suse.de Subject: [PATCH V5 4/8] sched: remove LB_BIAS Date: Wed, 16 Apr 2014 10:43:25 +0800 Message-Id: <1397616209-27275-5-git-send-email-alex.shi@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1397616209-27275-1-git-send-email-alex.shi@linaro.org> References: <1397616209-27275-1-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: 209.85.128.174 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