Received: by 2002:a05:6902:102b:0:0:0:0 with SMTP id x11csp656896ybt; Wed, 8 Jul 2020 08:36:00 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwEQ0hhwEHZU0thGroFNx/F2TnhGxiEib6m9NiXe7XkKTY1pbxwJtZa+NUaHVen+KHvQQXi X-Received: by 2002:a50:fd12:: with SMTP id i18mr69139661eds.371.1594222560783; Wed, 08 Jul 2020 08:36:00 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1594222560; cv=none; d=google.com; s=arc-20160816; b=DXRb5o+YCVAE82ls2bToBttbL/hdn7rq08pDEZXWX0A42nQ9tKElvZAvVaJ7Ym1R5L s3BoE2B/MmGwiKESFJa65EDg+8DE7V64yguFgsunpIUk7Ma8gcqyxDAHHQghKW95wd7Y kwy0Q38M7Xc/eE9aDD6zwUWzolHcruosie7Y4bvElEPNwaFLhH0d7kFUfOO12Q0jiZKp NUEftvNQf4Nm0s3GK/NedTcoXOXIpm3D5GC2oE036LbkavCAdbWsEcmU7aRM8zpdQNPt EplKaPPYl382gfut/aF/3jz7RxxKMw8mGHjz8MCXvlbAGppNbTntSvQcUvEv3ezEIdaJ PglQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=fnMofg5ZuSambGn8SnaLkttfPIuz+RZZm6XCsMt+eXA=; b=x1p4EYZM83KB3QI2MjUgE13JLfOC9+FbOf/mtESHLnCzei1OegqXp/tCV3FZwtRcQO rL+YaSoV2P299MDCGxV+0aetcwzuomNdzQBFQgWUzQakDGBVg2ACTaJqgG36ZG/ZnSpc EtpB78vQnTDomGVtieVRv5XxgYNMr8xOSgg+cLiRvuGhdFY4BMvgu5ks1VeVD3Vew0Ee 9AYF5CXrxvHlrD6O6m5YJRRWWSTNZtxpLQ8Cab1D1O3Ger0yS6yr1bmTyJg4VU7jqomP If58QPGaVT8RnPx27fCiLQ2cuzTrPBojfFrX6g49XL7mZAyqdPore5g9OTWSlCOQJU3d LJKA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id t12si108273ejr.551.2020.07.08.08.35.36; Wed, 08 Jul 2020 08:36:00 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730289AbgGHPeq (ORCPT + 99 others); Wed, 8 Jul 2020 11:34:46 -0400 Received: from foss.arm.com ([217.140.110.172]:47166 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730028AbgGHPep (ORCPT ); Wed, 8 Jul 2020 11:34:45 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 21AB61045; Wed, 8 Jul 2020 08:34:45 -0700 (PDT) Received: from e123648.arm.com (unknown [10.37.12.67]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id AFCD23F237; Wed, 8 Jul 2020 08:34:40 -0700 (PDT) From: Lukasz Luba To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Cc: lukasz.luba@arm.com, willy.mh.wolff.ml@gmail.com, k.konieczny@samsung.com, cw00.choi@samsung.com, b.zolnierkie@samsung.com, krzk@kernel.org, chanwoo@kernel.org, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, s.nawrocki@samsung.com, kgene@kernel.org Subject: [PATCH 1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold Date: Wed, 8 Jul 2020 16:34:19 +0100 Message-Id: <20200708153420.29484-2-lukasz.luba@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200708153420.29484-1-lukasz.luba@arm.com> References: <20200708153420.29484-1-lukasz.luba@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In order to react faster and make better decisions under some workloads, benchmarking the memory subsystem behavior, adjust the polling interval and upthreshold value used by the simple_ondemand governor. Reported-by: Willy Wolff Signed-off-by: Lukasz Luba --- drivers/memory/samsung/exynos5422-dmc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/memory/samsung/exynos5422-dmc.c b/drivers/memory/samsung/exynos5422-dmc.c index 93e9c2429c0d..e03ee35f0ab5 100644 --- a/drivers/memory/samsung/exynos5422-dmc.c +++ b/drivers/memory/samsung/exynos5422-dmc.c @@ -1466,10 +1466,10 @@ static int exynos5_dmc_probe(struct platform_device *pdev) * Setup default thresholds for the devfreq governor. * The values are chosen based on experiments. */ - dmc->gov_data.upthreshold = 30; + dmc->gov_data.upthreshold = 10; dmc->gov_data.downdifferential = 5; - exynos5_dmc_df_profile.polling_ms = 500; + exynos5_dmc_df_profile.polling_ms = 100; } -- 2.17.1