From patchwork Fri Mar 2 21:17:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Saleem, Shiraz" X-Patchwork-Id: 10255697 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 96F166037F for ; Fri, 2 Mar 2018 21:18:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 876332817F for ; Fri, 2 Mar 2018 21:18:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7BB602842A; Fri, 2 Mar 2018 21:18:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 222F92817F for ; Fri, 2 Mar 2018 21:18:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933639AbeCBVSG (ORCPT ); Fri, 2 Mar 2018 16:18:06 -0500 Received: from mga12.intel.com ([192.55.52.136]:4107 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933644AbeCBVSF (ORCPT ); Fri, 2 Mar 2018 16:18:05 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Mar 2018 13:18:05 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,413,1515484800"; d="scan'208";a="31037286" Received: from ssaleem-mobl4.amr.corp.intel.com ([10.122.33.57]) by FMSMGA003.fm.intel.com with ESMTP; 02 Mar 2018 13:18:04 -0800 From: Shiraz Saleem To: dledford@redhat.com, jgg@ziepe.ca Cc: linux-rdma@vger.kernel.org, e1000-rdma@lists.sourceforge.net, Shiraz Saleem Subject: [PATCH rdma-next 3/3] i40iw: Implement get_vector_affinity API Date: Fri, 2 Mar 2018 15:17:14 -0600 Message-Id: <20180302211714.14512-4-shiraz.saleem@intel.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20180302211714.14512-1-shiraz.saleem@intel.com> References: <20180302211714.14512-1-shiraz.saleem@intel.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Storage ULPs (like NVMEoF) benefit from exposing affinity mapping per completion vector to find the optimal multi-queue affinity assignments. The ULPs call the verbs API ib_get_vector_affinity introduced in commit c66cd353bbe ("RDMA/core: expose affinity mappings per completion vector") to get the underlying devices affinity mappings. Add support in driver to expose the affinity masks per MSI-X completion vector. Signed-off-by: Shiraz Saleem --- drivers/infiniband/hw/i40iw/i40iw_verbs.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 70024e8..a5179857 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -2729,6 +2729,25 @@ static int i40iw_destroy_ah(struct ib_ah *ah) } /** + * i40iw_get_vector_affinity - report IRQ affinity mask + * @ibdev: IB device + * @comp_vector: completion vector index + */ +static const struct cpumask *i40iw_get_vector_affinity(struct ib_device *ibdev, + int comp_vector) +{ + struct i40iw_device *iwdev = to_iwdev(ibdev); + struct i40iw_msix_vector *msix_vec; + + if (iwdev->msix_shared) + msix_vec = &iwdev->iw_msixtbl[comp_vector]; + else + msix_vec = &iwdev->iw_msixtbl[comp_vector + 1]; + + return irq_get_affinity_mask(msix_vec->irq); +} + +/** * i40iw_init_rdma_device - initialization of iwarp device * @iwdev: iwarp device */ @@ -2824,6 +2843,7 @@ static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev iwibdev->ibdev.req_notify_cq = i40iw_req_notify_cq; iwibdev->ibdev.post_send = i40iw_post_send; iwibdev->ibdev.post_recv = i40iw_post_recv; + iwibdev->ibdev.get_vector_affinity = i40iw_get_vector_affinity; return iwibdev; }