From patchwork Mon Jan 11 23:12:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyrel Datwyler X-Patchwork-Id: 362572 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 293AAC433E6 for ; Tue, 12 Jan 2021 00:31:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 07AF822CF7 for ; Tue, 12 Jan 2021 00:31:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391760AbhALAZq (ORCPT ); Mon, 11 Jan 2021 19:25:46 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:34718 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2403861AbhAKXNV (ORCPT ); Mon, 11 Jan 2021 18:13:21 -0500 Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 10BN1QGt093644; Mon, 11 Jan 2021 18:12:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=Z0MKHlExerIGTDZ+RFFcZDlZHDy3QWjCBB0jo4OYJqs=; b=hbtQbDgSQQWLx1ClzTuhlRiXljh+zs8HLlMOSYCRhXxaUDzHnhmEYg+TbUEUy5+TDePB oyes9R291cJfW83uI3/sbd8lRUi4i9ddPO2xNQrX4om5FNueCWpk1KiPms5u/u6x8+7h pGFcREhHBGVm/kvTXmmgemChao6ETAtYHgFEbaJS1wXym3XRWJ8qq59uRi1G9crGGbzj OfG4aRhn9n5fBkiSW5knsOyxlJZB0TMh2sxBuA9rbsTynVepXxdlxRuqLthwLPckfebW 6nDGXccGeCyMJ9EMTh+41FQPtd9NRWZ0RgY10FRQZvN0NBa1hJQrM/plvMjObSkKD21T 3Q== Received: from ppma02wdc.us.ibm.com (aa.5b.37a9.ip4.static.sl-reverse.com [169.55.91.170]) by mx0b-001b2d01.pphosted.com with ESMTP id 360wgfmeg3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 11 Jan 2021 18:12:31 -0500 Received: from pps.filterd (ppma02wdc.us.ibm.com [127.0.0.1]) by ppma02wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 10BN9uPa009926; Mon, 11 Jan 2021 23:12:30 GMT Received: from b03cxnp08025.gho.boulder.ibm.com (b03cxnp08025.gho.boulder.ibm.com [9.17.130.17]) by ppma02wdc.us.ibm.com with ESMTP id 35y448sy9w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 11 Jan 2021 23:12:30 +0000 Received: from b03ledav004.gho.boulder.ibm.com (b03ledav004.gho.boulder.ibm.com [9.17.130.235]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 10BNCT4k27263276 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 11 Jan 2021 23:12:29 GMT Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3EC8A78063; Mon, 11 Jan 2021 23:12:29 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D15507805E; Mon, 11 Jan 2021 23:12:28 +0000 (GMT) Received: from vios4361.aus.stglabs.ibm.com (unknown [9.3.43.61]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Mon, 11 Jan 2021 23:12:28 +0000 (GMT) From: Tyrel Datwyler To: james.bottomley@hansenpartnership.com Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, brking@linux.ibm.com, Tyrel Datwyler Subject: [PATCH v4 03/21] ibmvfc: init/free event pool during queue allocation/free Date: Mon, 11 Jan 2021 17:12:07 -0600 Message-Id: <20210111231225.105347-4-tyreld@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210111231225.105347-1-tyreld@linux.ibm.com> References: <20210111231225.105347-1-tyreld@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343, 18.0.737 definitions=2021-01-11_32:2021-01-11,2021-01-11 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 suspectscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 mlxscore=0 priorityscore=1501 mlxlogscore=999 spamscore=0 adultscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101110126 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The event pool and CRQ used to be separate entities of the adapter host structure and as such were allocated and freed independently of each other. Recent work as defined a generic queue structure with an event pool specific to each queue. As such the event pool for each queue shouldn't be allocated/freed independently, but instead performed as part of the queue allocation/free routines. Move the calls to ibmvfc_event_pool_{init|free} into ibmvfc_{alloc|free}_queue respectively. The only functional change here is that the CRQ cannot be released in ibmvfc_remove until after the event pool has been successfully purged since releasing the queue will also free the event pool. Signed-off-by: Tyrel Datwyler --- drivers/scsi/ibmvscsi/ibmvfc.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index cd9273a5fadb..9330f5a65a7e 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -807,6 +807,8 @@ static void ibmvfc_free_queue(struct ibmvfc_host *vhost, dma_unmap_single(dev, queue->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); free_page((unsigned long)queue->msgs.handle); queue->msgs.handle = NULL; + + ibmvfc_free_event_pool(vhost, queue); } /** @@ -5019,6 +5021,10 @@ static int ibmvfc_alloc_queue(struct ibmvfc_host *vhost, switch (fmt) { case IBMVFC_CRQ_FMT: fmt_size = sizeof(*queue->msgs.crq); + if (ibmvfc_init_event_pool(vhost, queue)) { + dev_err(dev, "Couldn't initialize event pool.\n"); + return -ENOMEM; + } break; case IBMVFC_ASYNC_FMT: fmt_size = sizeof(*queue->msgs.async); @@ -5333,13 +5339,8 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) goto kill_kthread; } - if ((rc = ibmvfc_init_event_pool(vhost, &vhost->crq))) { - dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); - goto release_crq; - } - if ((rc = scsi_add_host(shost, dev))) - goto release_event_pool; + goto release_crq; fc_host_dev_loss_tmo(shost) = IBMVFC_DEV_LOSS_TMO; @@ -5362,8 +5363,6 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) remove_shost: scsi_remove_host(shost); -release_event_pool: - ibmvfc_free_event_pool(vhost, &vhost->crq); release_crq: ibmvfc_release_crq_queue(vhost); kill_kthread: @@ -5398,7 +5397,6 @@ static int ibmvfc_remove(struct vio_dev *vdev) spin_unlock_irqrestore(vhost->host->host_lock, flags); ibmvfc_wait_while_resetting(vhost); - ibmvfc_release_crq_queue(vhost); kthread_stop(vhost->work_thread); fc_remove_host(vhost->host); scsi_remove_host(vhost->host); @@ -5408,7 +5406,7 @@ static int ibmvfc_remove(struct vio_dev *vdev) list_splice_init(&vhost->purge, &purge); spin_unlock_irqrestore(vhost->host->host_lock, flags); ibmvfc_complete_purge(&purge); - ibmvfc_free_event_pool(vhost, &vhost->crq); + ibmvfc_release_crq_queue(vhost); ibmvfc_free_mem(vhost); spin_lock(&ibmvfc_driver_lock);