From patchwork Thu Jun 9 10:29:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 12875203 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 23A7BCCA482 for ; Thu, 9 Jun 2022 10:38:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243327AbiFIKiH (ORCPT ); Thu, 9 Jun 2022 06:38:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58662 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243077AbiFIKhQ (ORCPT ); Thu, 9 Jun 2022 06:37:16 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C44D8211133; Thu, 9 Jun 2022 03:36:50 -0700 (PDT) Received: from fraeml704-chm.china.huawei.com (unknown [172.18.147.207]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4LJgRH0tBwz67ycH; Thu, 9 Jun 2022 18:33:15 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml704-chm.china.huawei.com (10.206.15.53) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2375.24; Thu, 9 Jun 2022 12:36:48 +0200 Received: from localhost.localdomain (10.69.192.58) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 9 Jun 2022 11:36:45 +0100 From: John Garry To: , , , , , , CC: , , , , , John Garry Subject: [PATCH RFC v2 16/18] scsi: core: Add scsi_alloc_request_hwq() Date: Thu, 9 Jun 2022 18:29:17 +0800 Message-ID: <1654770559-101375-17-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1654770559-101375-1-git-send-email-john.garry@huawei.com> References: <1654770559-101375-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add a variant of scsi_alloc_request() which allocates a request for a specific hw queue. Signed-off-by: John Garry --- drivers/scsi/scsi_lib.c | 12 ++++++++++++ include/scsi/scsi_cmnd.h | 3 +++ 2 files changed, 15 insertions(+) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 8c8b4c6767d9..443afaf52c14 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1137,6 +1137,18 @@ struct request *scsi_alloc_request(struct request_queue *q, } EXPORT_SYMBOL_GPL(scsi_alloc_request); +struct request *scsi_alloc_request_hwq(struct request_queue *q, + unsigned int op, blk_mq_req_flags_t flags, unsigned int hwq) +{ + struct request *rq; + + rq = blk_mq_alloc_request_hctx(q, op, flags, hwq); + if (!IS_ERR(rq)) + scsi_initialize_rq(rq); + return rq; +} +EXPORT_SYMBOL_GPL(scsi_alloc_request_hwq); + /* * Only called when the request isn't completed by SCSI, and not freed by * SCSI diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index e47df5836070..e69bb6baad47 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -394,4 +394,7 @@ extern void scsi_build_sense(struct scsi_cmnd *scmd, int desc, struct request *scsi_alloc_request(struct request_queue *q, unsigned int op, blk_mq_req_flags_t flags); +struct request *scsi_alloc_request_hwq(struct request_queue *q, + unsigned int op, blk_mq_req_flags_t flags, unsigned int hwq); + #endif /* _SCSI_SCSI_CMND_H */