From patchwork Fri Jul 10 19:11:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Luba X-Patchwork-Id: 11657269 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8AB6514F6 for ; Fri, 10 Jul 2020 19:11:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7274A2078D for ; Fri, 10 Jul 2020 19:11:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728255AbgGJTLn (ORCPT ); Fri, 10 Jul 2020 15:11:43 -0400 Received: from foss.arm.com ([217.140.110.172]:35424 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726872AbgGJTLm (ORCPT ); Fri, 10 Jul 2020 15:11:42 -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 2207531B; Fri, 10 Jul 2020 12:11:42 -0700 (PDT) Received: from e123648.arm.com (unknown [10.37.12.58]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 840103FA00; Fri, 10 Jul 2020 12:11:38 -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 v2 1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold Date: Fri, 10 Jul 2020 20:11:21 +0100 Message-Id: <20200710191122.11029-2-lukasz.luba@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200710191122.11029-1-lukasz.luba@arm.com> References: <20200710191122.11029-1-lukasz.luba@arm.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@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 Reviewed-by: Chanwoo Choi Signed-off-by: Lukasz Luba Reviewed-by: Krzysztof Kozlowski --- 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; }