From patchwork Tue Dec 5 22:14:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 13480832 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="ZBf3v6nh" Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C254B137; Tue, 5 Dec 2023 14:14:15 -0800 (PST) Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3B5Lp4sT018700; Tue, 5 Dec 2023 22:14:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : date : subject : mime-version : content-type : content-transfer-encoding : message-id : to : cc; s=qcppdkim1; bh=qHf8U2nrlOqnmtlM/j+8/wfCbRl6t44vzQQ63+6e53Q=; b=ZBf3v6nhsdgTawJHYhiGf3LoAQ8cxSf8jrz0H0fyR6+vxjQyRr3r/fBvYGxspU446qTh hCYh1ddCbfddPX6BeDFogPSzgiMZZ10z0nH6KsKUXL7urnrUycm7uwS3wycnLadcDPhr y6dzoiqW2UlBUkMILZJ8vyzTjH0Ag1SF+vfVYDFXXydCiLfVIE8v1GLf+yl9nek45d88 XeDBfPCDL/pS7MIFv36107NharPwFy09HG8s97fdg2V6Jrkb5YUzam9VWFvjW6/GcwV5 iiHKyDv/sPxDhUulYeI/nDlNdauDFZFNh3t3+InJ+nVUcVLwMTnKo9SthR5pNWgMQ4vl Qw== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3utaq6r7gt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Dec 2023 22:14:11 +0000 Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3B5MEALE029675 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 5 Dec 2023 22:14:10 GMT Received: from [169.254.0.1] (10.49.16.6) 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, 5 Dec 2023 14:14:10 -0800 From: Bjorn Andersson Date: Tue, 5 Dec 2023 14:14:00 -0800 Subject: [PATCH RFT] interconnect: qcom: icc-rpm: Fix peak rate calculation Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20231205-qcom_icc_calc_rate-typo-v1-1-9d4378dcf53e@quicinc.com> X-B4-Tracking: v=1; b=H4sIAKegb2UC/x2NQQrCMBAAv1L2bKBZ24sP8AHiTSRstxu7EJM2q aKU/t3gcQaG2aBIVilwajbI8taiKVawhwZ4ovgQo2NlwBaPFtveLJyeTpkdU2CXaRWzfudkyPY djr7ziAi1HqiIGTJFnmofXyFUOWfx+vnvbnA5X+G+7z8MoLTvgwAAAA== To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Georgi Djakov CC: , , , , Bjorn Andersson X-Mailer: b4 0.12.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1701814450; l=1406; i=quic_bjorande@quicinc.com; s=20230915; h=from:subject:message-id; bh=IOiUqa5MIxZI2ZQuYicHMxdfvzg1T0CI18L5cTZyuSs=; b=TFtFYGhlEV2KqgcMa0undO9RfnVIsMY9h4Wm2eEncSDVe9bj0eGuLsRmbp/O8Kt7NN7gn4PrN39E zEcHcZnqAeaiZaWR+vm2ruP7fyDlQ6KOFK8SarfcvzjgLnLSnpSa X-Developer-Key: i=quic_bjorande@quicinc.com; a=ed25519; pk=VkhObtljigy9k0ZUIE1Mvr0Y+E1dgBEH9WoLQnUtbIM= X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) 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: 5HaCI60Er8S7KpgSfKcEGcesPQx7zYLk X-Proofpoint-ORIG-GUID: 5HaCI60Er8S7KpgSfKcEGcesPQx7zYLk 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=2023-12-05_18,2023-12-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 suspectscore=0 mlxlogscore=906 bulkscore=0 adultscore=0 priorityscore=1501 spamscore=0 clxscore=1011 phishscore=0 impostorscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312050172 Per the commit message of commit 'dd014803f260 ("interconnect: qcom: icc-rpm: Add AB/IB calculations coefficients")', the peak rate should be 100/ib_percent. But, in what looks like a typical typo, the numerator value is discarded in the calculation. Update the implementation to match the described intention. Fixes: dd014803f260 ("interconnect: qcom: icc-rpm: Add AB/IB calculations coefficients") Cc: stable@vger.kernel.org Signed-off-by: Bjorn Andersson Reviewed-by: Konrad Dybcio --- Spotted while reading the code, patch is untested. --- drivers/interconnect/qcom/icc-rpm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- base-commit: 0f5f12ac05f36f117e793656c3f560625e927f1b change-id: 20231205-qcom_icc_calc_rate-typo-a1542df4f222 Best regards, diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index fb54e78f8fd7..a8ed435f696c 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -307,7 +307,7 @@ static u64 qcom_icc_calc_rate(struct qcom_icc_provider *qp, struct qcom_icc_node if (qn->ib_coeff) { agg_peak_rate = qn->max_peak[ctx] * 100; - agg_peak_rate = div_u64(qn->max_peak[ctx], qn->ib_coeff); + agg_peak_rate = div_u64(agg_peak_rate, qn->ib_coeff); } else { agg_peak_rate = qn->max_peak[ctx]; }