From patchwork Wed Dec 13 10:36:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maramaina Naresh X-Patchwork-Id: 13490645 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D486FC4332F for ; Wed, 13 Dec 2023 10:38:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=DreVbSeo4SCuRKpgjy9Qs2Nne4AWPDHAcGhHLuvZbpg=; b=vu5dVF3mpoiymG DUQSOAHQfNAENLDAUHLSdYUruArvaupIgL26HVKk6bFyrWnMTxkO2UuUop5xe9MLobzPexbg3eCkp OHMJkplFouh7l8UYXee1JL/MULJ8hManyeL5IWoU3TjAon8gcMrreSx6deWJX1mcCSQE0VbbKa6br 945jkY4PJ2m7dqJ+zDbzmcIQGByaVfSXsw3gHQNSSyPSxYBdVYvaruE6+M8ToiAfzZ5unkPSBw2vn beTB6ANnnswl0w3yGQK+bISzz06tAAjBA20GpWTH7yUzHlctjRmsb3qhWcPWiueoLMKcH6TD+5yT2 zR0aSfxvqf2EHGmDmT3g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rDMcn-00EGHY-1U; Wed, 13 Dec 2023 10:37:57 +0000 Received: from mx0a-0031df01.pphosted.com ([205.220.168.131]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rDMck-00EGH0-01; Wed, 13 Dec 2023 10:37:55 +0000 Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BD7H9Hx000429; Wed, 13 Dec 2023 10:37:45 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:mime-version:content-type; s= qcppdkim1; bh=PtcW76POK9iiqQ2qciDqBvfz80BkdqHXbeCSE0EFbQ4=; b=Uc aBZToU7sD1qwrDI5Zm0ivm3x10XvKcCDEk+KNLOpvtkZLDdyMonMfHOy5Dlme9T3 I4TLYQDkzzn/NBXyPOW1tPUVtpotuxpPOgXN0oD7qIeHxZrpczqjR0cM/bUC483e +YVcKzYPA8eCm/o5/5RmP5o+LH6tNbb8NVSLJDnx/MhRzj643YTFavgICNpY4foz 82YNwEmVM7e+47WujHUDGuEkDyhFtxFvMKo4LdBylUqaTPL1Bp8TROY2Z+SWZCaw UIzEIOuLMeoyGxXsObifqHVEm2J0L/2FQ2u7OiEii68ZaJfoiQLMqAha2cMRAmO9 xPM5yiPHvdkkIivl0u4A== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3uy5tvgsym-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Dec 2023 10:37:45 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BDAbiMO018800 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Dec 2023 10:37:44 GMT Received: from hu-mnaresh-hyd.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Wed, 13 Dec 2023 02:37:39 -0800 From: Maramaina Naresh To: "James E.J. Bottomley" , "Martin K. Petersen" , Peter Wang , "Matthias Brugger" , AngeloGioacchino Del Regno , CC: Alim Akhtar , Avri Altman , Bart Van Assche , Stanley Jhu , , , , , , Subject: [PATCH V4 0/2] Add CPU latency QoS support for ufs driver Date: Wed, 13 Dec 2023 16:06:40 +0530 Message-ID: <20231213103642.15320-1-quic_mnaresh@quicinc.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: Hs6gf9V6tF0iylPG58GBMUietw0t8wAf X-Proofpoint-GUID: Hs6gf9V6tF0iylPG58GBMUietw0t8wAf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 priorityscore=1501 impostorscore=0 mlxscore=0 clxscore=1015 mlxlogscore=731 bulkscore=0 spamscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312130077 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231213_023754_045775_FA27F112 X-CRM114-Status: GOOD ( 11.55 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add CPU latency QoS support for ufs driver. This improves random io performance by 15% for ufs. tiotest benchmark tool io performance results on sm8550 platform: 1. Without PM QoS support Type (Speed in) | Average of 18 iterations Random Read(IPOS) | 37101.3 Random Write(IPOS) | 41065.13 2. With PM QoS support Type (Speed in) | Average of 18 iterations Random Read(IPOS) | 42943.4 Random Write(IPOS) | 46784.9 (Improvement with PM QoS = ~15%). This patch is based on below patch by Stanley Chu [1]. Moving the PM QoS code to ufshcd.c and making it generic. [1] https://lore.kernel.org/r/20220623035052.18802-8-stanley.chu@mediatek.com Changes from v3: - Removed UFSHCD_CAP_PM_QOS capability flag from patch#2. Changes from v2: - Addressed bvanassche and mani comments - Provided sysfs interface to enable/disable PM QoS feature Changes from v1: - Addressed bvanassche comments to have the code in core ufshcd Maramaina Naresh (2): ufs: core: Add CPU latency QoS support for ufs driver ufs: ufs-mediatek: Enable CPU latency PM QoS support for MEDIATEK SoC drivers/ufs/core/ufshcd.c | 127 ++++++++++++++++++++++++++++++++ drivers/ufs/host/ufs-mediatek.c | 17 ----- drivers/ufs/host/ufs-mediatek.h | 3 - include/ufs/ufshcd.h | 6 ++ 4 files changed, 133 insertions(+), 20 deletions(-)