From patchwork Wed Jun 7 12:17:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manikanta Mylavarapu X-Patchwork-Id: 13270618 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE486C7EE23 for ; Wed, 7 Jun 2023 12:18:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240598AbjFGMSS (ORCPT ); Wed, 7 Jun 2023 08:18:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60870 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240628AbjFGMSN (ORCPT ); Wed, 7 Jun 2023 08:18:13 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECDE01FC1; Wed, 7 Jun 2023 05:18:10 -0700 (PDT) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 357BlIW9004954; Wed, 7 Jun 2023 12:18:07 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=VHE8w+ShAqFQJicL/pWh6KAKyy97L6DwKhrLaJOzP84=; b=XD+IRKlDjwT7E5qWRTxji1l+l1TmoqUOV/IQxWzJsBXDosy89x10O/A1bvPKG0nOyNSM dTKdKQefc4Ck6U6hj/IkqzM22iv8ohptB5pnxnOGGKOE4OW/llTfwNl5EhJ93IwSCFes kykeHBU4znzWeWZSxk6fL6D+m1u6nOHVdYUcGjqI8L7Y+sJ/L11/9JmuyIfTmb8bVcOh ozetSsK2a25GXd38219+y2osqXtSm0m88SfmQMXRA5bUPvxJ+YnXlCPVm0qveAmmPa/j SifPVVA2Yeec92FDRJ7eY2ZYm4UzRpY6ZVmYd0hOfbQUPPbxbF+pP7vXp9x8Yjr2nI7k lA== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3r2a9t9rqb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Jun 2023 12:18:07 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 357CI5wY019704 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 7 Jun 2023 12:18:05 GMT Received: from mmanikan-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Wed, 7 Jun 2023 05:18:01 -0700 From: Manikanta Mylavarapu To: , , , , , , CC: , , , , Subject: [PATCH 2/2] rpmsg: glink: change intent work queue type Date: Wed, 7 Jun 2023 17:47:31 +0530 Message-ID: <20230607121731.26958-3-quic_mmanikan@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230607121731.26958-1-quic_mmanikan@quicinc.com> References: <20230607121731.26958-1-quic_mmanikan@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 0qrEEyXrMliSlsA-jatLlxTXYqgs9687 X-Proofpoint-GUID: 0qrEEyXrMliSlsA-jatLlxTXYqgs9687 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-07_06,2023-06-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 bulkscore=0 phishscore=0 clxscore=1015 impostorscore=0 malwarescore=0 suspectscore=0 mlxlogscore=999 spamscore=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306070102 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org QDSP6 will clear heap memory once it's received RX_DONE event from APPS. Under heavy cpu load intent worker thread not able to get cpu slot because it's bound to kernel global work queue. Due to this QDSP6 firmware faces OOM and it leads to Q6 crash. Changing intent work queue type to UNBOUND workqueue ensures intent worker thread will be executed as early as possible. Signed-off-by: Manikanta Mylavarapu --- drivers/rpmsg/qcom_glink_native.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 6f9a439e5046..c3e076bb863f 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -140,6 +140,7 @@ enum { * @liids: idr of all local intents * @riids: idr of all remote intents * @intent_work: worker responsible for transmitting rx_done packets + * @intent_wq: work queue of intent_work * @done_intents: list of intents that needs to be announced rx_done * @buf: receive buffer, for gathering fragments * @buf_offset: write offset in @buf @@ -169,6 +170,7 @@ struct glink_channel { struct idr liids; struct idr riids; struct work_struct intent_work; + struct workqueue_struct *intent_wq; struct list_head done_intents; struct glink_core_rx_intent *buf; @@ -231,6 +233,14 @@ static struct glink_channel *qcom_glink_alloc_channel(struct qcom_glink *glink, INIT_LIST_HEAD(&channel->done_intents); INIT_WORK(&channel->intent_work, qcom_glink_rx_done_work); + channel->intent_wq = alloc_workqueue("intent_wq", WQ_UNBOUND, 1); + if (!channel->intent_wq) { + pr_err("failed to create %s channel intent work queue\n", + channel->name); + kfree(channel); + return ERR_PTR(-ENOMEM); + } + idr_init(&channel->liids); idr_init(&channel->riids); kref_init(&channel->refcount); @@ -270,6 +280,7 @@ static void qcom_glink_channel_release(struct kref *ref) idr_destroy(&channel->riids); spin_unlock_irqrestore(&channel->intent_lock, flags); + destroy_workqueue(channel->intent_wq); kfree(channel->name); kfree(channel); } @@ -573,7 +584,7 @@ static void qcom_glink_rx_done(struct qcom_glink *glink, list_add_tail(&intent->node, &channel->done_intents); spin_unlock(&channel->intent_lock); - schedule_work(&channel->intent_work); + queue_work(channel->intent_wq, &channel->intent_work); } /**