From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 43D3DC43214 for ; Fri, 6 Aug 2021 08:55:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24BA361179 for ; Fri, 6 Aug 2021 08:55:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243708AbhHFIzU (ORCPT ); Fri, 6 Aug 2021 04:55:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243775AbhHFIzR (ORCPT ); Fri, 6 Aug 2021 04:55:17 -0400 Received: from mail-ot1-x32e.google.com (mail-ot1-x32e.google.com [IPv6:2607:f8b0:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D1B5C06179B for ; Fri, 6 Aug 2021 01:55:02 -0700 (PDT) Received: by mail-ot1-x32e.google.com with SMTP id d10-20020a9d4f0a0000b02904f51c5004e3so3798884otl.9 for ; Fri, 06 Aug 2021 01:55:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=DDIc97Bwpe2ZheJb7ETR++dt/ZlJVYSFAOBjZvoehT4=; b=WYrUqGUiGW018fwF1ZP0ghrrc9+brHKRm407aWYmMWyt4nKBjMi8PZdAdIPZmp0wT1 63uSteoJiHMB30M2ZObq2VF+L6QFpRnqMjhEy+dzG9wevf8s1baKbLLqWMjINb8Vtucm SCSnXCBaWE5Slnb9T2EaV6bl/zfAwbf5HC+2A= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=DDIc97Bwpe2ZheJb7ETR++dt/ZlJVYSFAOBjZvoehT4=; b=L8jfeXtQ3qqYONT1N7K+AVkbMfTkKHFidN07wsCH04gU56vsnFT2e6dl6nqqZlq/gV YZ24g9gX1I5pZ3eWJuh7LfT5I1uM1APX6srjG1fqTk038WiwqhXtmH6mrhudRF28XWfY Z8FzpK7X88WWiNVTw80xUIukpq0C+h36l2Lh9t/geVA0VoX/glryQD5wpfzV3iAP8VPW 4yCBA0cD28p1aqHAu80U77bN+xUzi0kpODhzpOr54D3tjVryQj5mQ82t8oPuFiyJ8XDO 95SzPRZ3vgUhyG9BEUZDSOeP/l4Xt8+QzkyyQ7z9n6bV1ZRwmT9D+DkN3lI4qA5jxpGk H7fA== X-Gm-Message-State: AOAM532VLOjQzYv9sqOIzaOVa4LqgUIvAQmVJsKRpf72nrjgpARtklfd uVtJOzMWhaINv2NyBI3zehB10pZSy/CPSRyrDvuW8g== X-Google-Smtp-Source: ABdhPJwUbALNSlNSC8icYgxyFUrSEnrWJP5ENADRBHlZgfsVbbKz5g2OW38CCOeAgzI1FNK4mxJJwvIvgUo4wj9XYvU= X-Received: by 2002:a05:6830:1d73:: with SMTP id l19mr6671887oti.316.1628240101470; Fri, 06 Aug 2021 01:55:01 -0700 (PDT) MIME-Version: 1.0 References: <20210720232624.1493424-1-nitesh@redhat.com> <20210720232624.1493424-6-nitesh@redhat.com> In-Reply-To: <20210720232624.1493424-6-nitesh@redhat.com> From: Sreekanth Reddy Date: Fri, 6 Aug 2021 14:24:49 +0530 Message-ID: Subject: Re: [PATCH v5 05/14] scsi: mpt3sas: Use irq_set_affinity_and_hint To: Nitesh Narayan Lal Cc: linux-kernel@vger.kernel.org, linux-scsi , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-api@vger.kernel.org, linux-pci@vger.kernel.org, Thomas Gleixner , jesse.brandeburg@intel.com, robin.murphy@arm.com, mtosatti@redhat.com, Ingo Molnar , jbrandeb@kernel.org, frederic@kernel.org, juri.lelli@redhat.com, abelits@marvell.com, Bjorn Helgaas , rostedt@goodmis.org, Peter Zijlstra , David Miller , Andrew Morton , Stephen Rothwell , stephen@networkplumber.org, rppt@linux.vnet.ibm.com, chris.friesen@windriver.com, maz@kernel.org, Neil Horman , pjwaskiewicz@gmail.com, sassmann@redhat.com, Tomas Henzl , Kashyap Desai , Sumit Saxena , Shivasharan Srikanteshwara , Sathya Prakash Veerichetty , Suganath Prabu Subramani , james.smart@broadcom.com, dick.kennedy@broadcom.com, jkc@redhat.com, faisal.latif@intel.com, shiraz.saleem@intel.com, tariqt@nvidia.com, ahleihel@redhat.com, kheib@redhat.com, borisp@nvidia.com, saeedm@nvidia.com, benve@cisco.com, govind@gmx.com, jassisinghbrar@gmail.com, ajit.khaparde@broadcom.com, sriharsha.basavapatna@broadcom.com, somnath.kotur@broadcom.com, nilal@redhat.com, tatyana.e.nikolova@intel.com, mustafa.ismail@intel.com, ahs3@redhat.com, leonro@nvidia.com, Chandrakanth Patil , bjorn.andersson@linaro.org, chunkuang.hu@kernel.org, yongqiang.niu@mediatek.com, baolin.wang7@gmail.com, poros@redhat.com, minlei@redhat.com, "Ewan D. Milne" , "James E.J. Bottomley" , "Martin K. Petersen" , _govind@gmx.com, kabel@kernel.org, viresh.kumar@linaro.org, Tushar.Khandelwal@arm.com, kuba@kernel.org Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000e2af4205c8e0308a" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --000000000000e2af4205c8e0308a Content-Type: text/plain; charset="UTF-8" On Wed, Jul 21, 2021 at 4:57 AM Nitesh Narayan Lal wrote: > > The driver uses irq_set_affinity_hint() specifically for the high IOPS > queue interrupts for two purposes: > > - To set the affinity_hint which is consumed by the userspace for > distributing the interrupts > > - To apply an affinity that it provides > > The driver enforces its own affinity to bind the high IOPS queue interrupts > to the local NUMA node. However, irq_set_affinity_hint() applying the > provided cpumask as an affinity (if not NULL) for the interrupt is an > undocumented side effect. > > To remove this side effect irq_set_affinity_hint() has been marked > as deprecated and new interfaces have been introduced. Hence, replace the > irq_set_affinity_hint() with the new interface irq_set_affinity_and_hint() > where the provided mask needs to be applied as the affinity and > affinity_hint pointer needs to be set and replace with > irq_update_affinity_hint() where only affinity_hint needs to be updated. > Changes looks good and also verified that the high iops queue's IRQs are affinitied to local numa node. Reviewed-by: Sreekanth Reddy > Signed-off-by: Nitesh Narayan Lal > --- > drivers/scsi/mpt3sas/mpt3sas_base.c | 21 ++++++++++----------- > 1 file changed, 10 insertions(+), 11 deletions(-) > > diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c > index c39955239d1c..c1a11962f227 100644 > --- a/drivers/scsi/mpt3sas/mpt3sas_base.c > +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c > @@ -2991,6 +2991,7 @@ _base_check_enable_msix(struct MPT3SAS_ADAPTER *ioc) > static void > _base_free_irq(struct MPT3SAS_ADAPTER *ioc) > { > + unsigned int irq; > struct adapter_reply_queue *reply_q, *next; > > if (list_empty(&ioc->reply_queue_list)) > @@ -2998,9 +2999,10 @@ _base_free_irq(struct MPT3SAS_ADAPTER *ioc) > > list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) { > list_del(&reply_q->list); > - if (ioc->smp_affinity_enable) > - irq_set_affinity_hint(pci_irq_vector(ioc->pdev, > - reply_q->msix_index), NULL); > + if (ioc->smp_affinity_enable) { > + irq = pci_irq_vector(ioc->pdev, reply_q->msix_index); > + irq_update_affinity_hint(irq, NULL); > + } > free_irq(pci_irq_vector(ioc->pdev, reply_q->msix_index), > reply_q); > kfree(reply_q); > @@ -3056,16 +3058,13 @@ _base_request_irq(struct MPT3SAS_ADAPTER *ioc, u8 index) > * @ioc: per adapter object > * > * The enduser would need to set the affinity via /proc/irq/#/smp_affinity > - * > - * It would nice if we could call irq_set_affinity, however it is not > - * an exported symbol > */ > static void > _base_assign_reply_queues(struct MPT3SAS_ADAPTER *ioc) > { > - unsigned int cpu, nr_cpus, nr_msix, index = 0; > + unsigned int cpu, nr_cpus, nr_msix, index = 0, irq; > struct adapter_reply_queue *reply_q; > - int local_numa_node; > + const struct cpumask *mask; > > if (!_base_is_controller_msix_enabled(ioc)) > return; > @@ -3088,11 +3087,11 @@ _base_assign_reply_queues(struct MPT3SAS_ADAPTER *ioc) > * corresponding to high iops queues. > */ > if (ioc->high_iops_queues) { > - local_numa_node = dev_to_node(&ioc->pdev->dev); > + mask = cpumask_of_node(dev_to_node(&ioc->pdev->dev)); > for (index = 0; index < ioc->high_iops_queues; > index++) { > - irq_set_affinity_hint(pci_irq_vector(ioc->pdev, > - index), cpumask_of_node(local_numa_node)); > + irq = pci_irq_vector(ioc->pdev, index); > + irq_set_affinity_and_hint(irq, mask); > } > } > > -- > 2.27.0 > --000000000000e2af4205c8e0308a Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQdgYJKoZIhvcNAQcCoIIQZzCCEGMCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3NMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS 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