From patchwork Tue Jan 30 09:02:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Zhang X-Patchwork-Id: 193917 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:2087:b0:106:209c:c626 with SMTP id gs7csp1101731dyb; Tue, 30 Jan 2024 01:38:24 -0800 (PST) X-Google-Smtp-Source: AGHT+IFbODyHqyfbS7DT5nQ9Qoj5lrdOQ5Rzxhs0FSsLlw7eoXX+lcTUaB5vyUNsdSUsoIctIgT0 X-Received: by 2002:aa7:9a0e:0:b0:6de:1e23:d9bc with SMTP id w14-20020aa79a0e000000b006de1e23d9bcmr3270832pfj.22.1706607504559; Tue, 30 Jan 2024 01:38:24 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1706607504; cv=pass; d=google.com; s=arc-20160816; b=Wf7H3YQvpX9zn4EThy++lHWM/7VRvSJz5heiqViceGLIpRVkRgaCPI81R/bnRRagId l26jDTvakdyhVvZwaiBfgYJM6VYeapcJgtxr/iv6mJTEMae8OhkSeUokVi3dv9KB62mg M7/vjQ+sjZk3keL5hyd2DZCZmGPTMy4QhajqrLEbs3bfmhD8aWHvAKn5/EFX5ocsTF5k pLcdXCHdGMmtB3MYw6pefvKFTMIa2Q33tPTb9QKq88Akp7EsSuIxiwsOoTaeapfMaZDZ GwiMdbFVIhZeCBYlyPpm5niTOf+fgIHzPFeN7YiSHF+H2dVI7545w5J8Of7ALjsgrvPC yFNw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:list-unsubscribe:list-subscribe:list-id:precedence :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=eG0cw3V2V7bP1GdeOMsXcfVKOjDgrWaClaMQX8x+Rcc=; fh=eSQnxfYZD66NgboVDB7L9mVH46SSiFzLE3y556oFJtg=; b=RiCkfyXWf0iwHu4SAbjYX9CNa5ixXtZLp1qMWddPrce0lFfjOawZxVgMp0EduVD8dB XQzWNxGvNgUwfrt7ieqC6RyEUQrgVUTHopYTzpBrIwwxq9RY8BOVyWqn9YjCAANOyuwU kzCCijPO2WvBpRthrASJ/V2upSVGNipmBZv5M5tK7MaWiYO+v38SxtYbY1bpcX79ATU0 ApCV3anIRc/vTutokE76m+uqTO/Fw9RGYK9bZPpBjm1JdPnY1dnPFr3vAQZnXmwbxsSV GxFJ08j9QPxX9I3UM3aHjvZsc9VeQFKOMSc357maZN/TOVwiBirzWBUUhQG4ibzofz4v ajCg== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=QZ2sbIRk; arc=pass (i=1 spf=pass spfdomain=quicinc.com dkim=pass dkdomain=quicinc.com dmarc=pass fromdomain=quicinc.com); spf=pass (google.com: domain of linux-kernel+bounces-44194-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) smtp.mailfrom="linux-kernel+bounces-44194-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from sy.mirrors.kernel.org (sy.mirrors.kernel.org. [147.75.48.161]) by mx.google.com with ESMTPS id i186-20020a639dc3000000b005d8505c96e1si6400553pgd.423.2024.01.30.01.38.24 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jan 2024 01:38:24 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-44194-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161; Authentication-Results: mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=QZ2sbIRk; arc=pass (i=1 spf=pass spfdomain=quicinc.com dkim=pass dkdomain=quicinc.com dmarc=pass fromdomain=quicinc.com); spf=pass (google.com: domain of linux-kernel+bounces-44194-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) smtp.mailfrom="linux-kernel+bounces-44194-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id CB97EB286BB for ; Tue, 30 Jan 2024 09:03:58 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 93EED60253; Tue, 30 Jan 2024 09:03:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="QZ2sbIRk" Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0691E59147; Tue, 30 Jan 2024 09:03:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706605408; cv=none; b=NgBvhmDsFLPCKADEdPg8u7uVWdWgqhWVFP7OyRu+3MGz+y+SsfF+sE3rz+XBkjz1kmQ8+ZgbZbY0s6zMTVVj+6BwVwn/hsZSGM2BvLkCaXlBuyxrTBOPPaWVdWEAcTKkcTbfQSKEvPJ68j6ujN5skmlV5Q97RzY9ldU+GPZSBtc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706605408; c=relaxed/simple; bh=Uewh1FnrdtUjaw3IbQp5/cVxlxfhVTRPnk+3maWKx+g=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=RJ8IVBtl3UvDRYV4RnSL8PuHlQfOqLn6LgRWWQWSoG4q/U0UIUdjSIB1OFIVUzL510sefk7Dm7tVvURl8EgKNiwFQeksjPmXrK8xssaTzRRRFoNrBj0WuT7S18DhrMsJzqK1YODbuvhBEbZwGlM51V//Q45HclrJ+OZms6kiN3s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=QZ2sbIRk; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40U6Firp004198; Tue, 30 Jan 2024 09:03:16 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=eG0cw3V2V7bP1GdeOMsX cfVKOjDgrWaClaMQX8x+Rcc=; b=QZ2sbIRku2RhKBE1ImcUN4yJiln5yf2eSHWm lgfJfvtneSNhSEoL6xTntsQg1ej68YMaF+zK5dH5VLhsDonBWuup2AcJuQgL4Qm7 dYVBrUnDW9/4OZqdDsVMGxRzU1JAbvISmiFsblU8aZMZt0MxjH7dnen/NrAOf8E+ VDvc3DIMaMziyC8tISA7sqw2Nmex8XjE1koqlbkKyeu6fER75OVY581ujelt5rCa GwXnVxu/LgyCiAAIAHgQ1l389G6ZL5fXZYo3nMfNCsTUqpbsM1es2mHzT1SCy4rv Sf7BFeXvni9zfHiig6lOK43V5x0r9m+BK00Ncib5rzeghpMALA== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vxupk89jq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 30 Jan 2024 09:03:16 +0000 (GMT) Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 40U93FFj025850 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 30 Jan 2024 09:03:15 GMT Received: from taozha-gv.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 30 Jan 2024 01:03:10 -0800 From: Tao Zhang To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Konrad Dybcio , Mike Leach , Rob Herring , Krzysztof Kozlowski CC: Tao Zhang , Jinlong Mao , Leo Yan , Greg Kroah-Hartman , , , , , Tingwei Zhang , Yuanfang Zhang , Trilok Soni , Song Chai , , Subject: [PATCH v5 01/10] coresight-tpdm: Optimize the store function of tpdm simple dataset Date: Tue, 30 Jan 2024 17:02:37 +0800 Message-ID: <1706605366-31705-2-git-send-email-quic_taozha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1706605366-31705-1-git-send-email-quic_taozha@quicinc.com> References: <1706605366-31705-1-git-send-email-quic_taozha@quicinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: cS1pLCpWjv5cc5oxSj_xzyq6q3DPOhMC X-Proofpoint-ORIG-GUID: cS1pLCpWjv5cc5oxSj_xzyq6q3DPOhMC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-30_03,2024-01-29_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=881 malwarescore=0 impostorscore=0 priorityscore=1501 clxscore=1015 phishscore=0 spamscore=0 bulkscore=0 adultscore=0 suspectscore=0 mlxscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401190000 definitions=main-2401300065 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1789507670608831488 X-GMAIL-MSGID: 1789507670608831488 Replace spin lock/unlock to avoid forgetting to unlock when the function exits. And refine methods for handling various conditions. Signed-off-by: Tao Zhang --- drivers/hwtracing/coresight/coresight-tpdm.c | 39 ++++++++++---------- 1 file changed, 19 insertions(+), 20 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index bd13a548375c..0427c0fc0bf3 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -77,51 +77,50 @@ static ssize_t tpdm_simple_dataset_store(struct device *dev, size_t size) { unsigned long val; - ssize_t ret = size; + ssize_t ret = -EINVAL; struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct tpdm_dataset_attribute *tpdm_attr = container_of(attr, struct tpdm_dataset_attribute, attr); if (kstrtoul(buf, 0, &val)) - return -EINVAL; + return ret; - spin_lock(&drvdata->spinlock); + guard(spinlock)(&drvdata->spinlock); switch (tpdm_attr->mem) { case DSB_TRIG_PATT: - if (tpdm_attr->idx < TPDM_DSB_MAX_PATT) + if (tpdm_attr->idx < TPDM_DSB_MAX_PATT) { drvdata->dsb->trig_patt[tpdm_attr->idx] = val; - else - ret = -EINVAL; + ret = size; + } break; case DSB_TRIG_PATT_MASK: - if (tpdm_attr->idx < TPDM_DSB_MAX_PATT) + if (tpdm_attr->idx < TPDM_DSB_MAX_PATT) { drvdata->dsb->trig_patt_mask[tpdm_attr->idx] = val; - else - ret = -EINVAL; + ret = size; + } break; case DSB_PATT: - if (tpdm_attr->idx < TPDM_DSB_MAX_PATT) + if (tpdm_attr->idx < TPDM_DSB_MAX_PATT) { drvdata->dsb->patt_val[tpdm_attr->idx] = val; - else - ret = -EINVAL; + ret = size; + } break; case DSB_PATT_MASK: - if (tpdm_attr->idx < TPDM_DSB_MAX_PATT) + if (tpdm_attr->idx < TPDM_DSB_MAX_PATT) { drvdata->dsb->patt_mask[tpdm_attr->idx] = val; - else - ret = -EINVAL; + ret = size; + } break; case DSB_MSR: - if (tpdm_attr->idx < drvdata->dsb_msr_num) + if (tpdm_attr->idx < drvdata->dsb_msr_num) { drvdata->dsb->msr[tpdm_attr->idx] = val; - else - ret = -EINVAL; + ret = size; + } break; default: - ret = -EINVAL; + break; } - spin_unlock(&drvdata->spinlock); return ret; }