From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 386D0C433E0 for ; Wed, 8 Jul 2020 15:36:21 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 027A6206DF for ; Wed, 8 Jul 2020 15:36:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="CU2RLEwG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 027A6206DF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=afzDeif4n5t8jGAgXeLLkqu7WJWlqMnHZHhjMoIKX5I=; b=CU2RLEwGZFc/v8D8qxm/0JkUMc naRt2PiIbRIWebZMgHGHul95H5rgB85ubudQuXKd+VyK/7dJsysgkp0HAi8OzNGxQsFPkMEjWosN7 IQ7+ixuWWtY20eS0PmDcQHhBN4LKlFvbBT6aEg8vwZD40RHKi+Qf8CTmgd6PhnTGsbUNsLt4I0grC e5mJ9Or5Oe61C1ZRMVvveKo/RvBLk1eM7QRvCKpQy7Gm3WrW96ldFn92Y4xF4fP5fFdpXuBgbDtRA WKtKTRHWW9bSq8+j/6dmSc4g3ZCGDcaCl9hJfDyVF3OnfPFTYKtPa9JqQhYAGDy1XU23Er5Z1Et0n akTg+YfA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jtC5y-0005aP-H0; Wed, 08 Jul 2020 15:34:50 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jtC5t-0005ZG-TK for linux-arm-kernel@lists.infradead.org; Wed, 08 Jul 2020 15:34:47 +0000 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 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200708_113446_391348_519AD5ED X-CRM114-Status: GOOD ( 11.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: s.nawrocki@samsung.com, b.zolnierkie@samsung.com, k.konieczny@samsung.com, krzk@kernel.org, cw00.choi@samsung.com, kyungmin.park@samsung.com, willy.mh.wolff.ml@gmail.com, myungjoo.ham@samsung.com, chanwoo@kernel.org, kgene@kernel.org, lukasz.luba@arm.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel