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[69.181.16.182]) by smtp.gmail.com with ESMTPSA id h9sm1049584pfh.98.2017.09.22.16.05.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 22 Sep 2017 16:05:12 -0700 (PDT) From: Leo Yan To: Ingo Molnar , Peter Zijlstra , linux-kernel@vger.kernel.org Cc: Leo Yan , Dietmar Eggemann , Morten Rasmussen , Chris Redpath , Joel Fernandes , Vincent Guittot Subject: [PATCH 1/2] sched/fair: make capacity_margin __read_mostly Date: Sat, 23 Sep 2017 07:04:43 +0800 Message-Id: <1506121484-8260-1-git-send-email-leo.yan@linaro.org> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Variable 'capacity_margin' is used with read operation for most cases to calculate the capacity margin, put it into __read_mostly section. Cc: Dietmar Eggemann Cc: Morten Rasmussen Cc: Chris Redpath Cc: Joel Fernandes Cc: Vincent Guittot Signed-off-by: Leo Yan --- kernel/sched/fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.7.4 diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 70ba32e..ad03bf4 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -129,7 +129,7 @@ unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL; * * (default: ~20%) */ -unsigned int capacity_margin = 1280; +unsigned int capacity_margin __read_mostly = 1280; static inline void update_load_add(struct load_weight *lw, unsigned long inc) {