From patchwork Tue Jul 13 21:14:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitesh Narayan Lal X-Patchwork-Id: 12375103 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=-16.5 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 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 DBB4DC07E96 for ; Tue, 13 Jul 2021 21:16:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C34906115B for ; Tue, 13 Jul 2021 21:16:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236344AbhGMVTm (ORCPT ); Tue, 13 Jul 2021 17:19:42 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:44906 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236175AbhGMVTm (ORCPT ); Tue, 13 Jul 2021 17:19:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626211011; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mzNBCx76Oue97s85xgfDBxjBA71n2ChlEIMSiGVXCV8=; b=fLE7XTSYplXhYuUZegkbiq90IvN1mgd1418O2ZYwPC8SrJQcsjO0azTw0LbUXwIQkHA1iY DMpcfe6ccZu1v0j0lLn1bor+RLOgOb9LeHBmYUM5vZIP6DFBDb+CLVgL30VnrkMRkQD6Ly gouHBzO4R3unAei+kKnu0HFqeBaLZHI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-595-UVAOZ0a5M4Sx0mu_0xPHzA-1; Tue, 13 Jul 2021 17:16:50 -0400 X-MC-Unique: UVAOZ0a5M4Sx0mu_0xPHzA-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DA02F100B3AC; Tue, 13 Jul 2021 21:16:44 +0000 (UTC) Received: from virtlab719.virt.lab.eng.bos.redhat.com (virtlab719.virt.lab.eng.bos.redhat.com [10.19.153.15]) by smtp.corp.redhat.com (Postfix) with ESMTP id E61445D9DD; Tue, 13 Jul 2021 21:16:33 +0000 (UTC) From: Nitesh Narayan Lal To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-api@vger.kernel.org, linux-pci@vger.kernel.org, tglx@linutronix.de, jesse.brandeburg@intel.com, robin.murphy@arm.com, mtosatti@redhat.com, mingo@kernel.org, jbrandeb@kernel.org, frederic@kernel.org, juri.lelli@redhat.com, abelits@marvell.com, bhelgaas@google.com, rostedt@goodmis.org, peterz@infradead.org, davem@davemloft.net, akpm@linux-foundation.org, sfr@canb.auug.org.au, stephen@networkplumber.org, rppt@linux.vnet.ibm.com, chris.friesen@windriver.com, maz@kernel.org, nhorman@tuxdriver.com, pjwaskiewicz@gmail.com, sassmann@redhat.com, thenzl@redhat.com, kashyap.desai@broadcom.com, sumit.saxena@broadcom.com, shivasharan.srikanteshwara@broadcom.com, sathya.prakash@broadcom.com, sreekanth.reddy@broadcom.com, suganath-prabu.subramani@broadcom.com, 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@broadcom.com Subject: [PATCH v3 11/14] scsi: lpfc: Use irq_set_affinity Date: Tue, 13 Jul 2021 17:14:59 -0400 Message-Id: <20210713211502.464259-12-nitesh@redhat.com> In-Reply-To: <20210713211502.464259-1-nitesh@redhat.com> References: <20210713211502.464259-1-nitesh@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The driver uses irq_set_affinity_hint to set the affinity for the lpfc interrupts to a mask corresponding to the local NUMA node to avoid performance overhead on AMD architectures. However, irq_set_affinity_hint() setting the affinity is an undocumented side effect that this function also sets the affinity under the hood. To remove this side effect irq_set_affinity_hint() has been marked as deprecated and new interfaces have been introduced. Also, as per the commit dcaa21367938 ("scsi: lpfc: Change default IRQ model on AMD architectures"): "On AMD architecture, revert the irq allocation to the normal style (non-managed) and then use irq_set_affinity_hint() to set the cpu affinity and disable user-space rebalancing." we don't really need to set the affinity_hint as user-space rebalancing for the lpfc interrupts is not desired. Hence, replace the irq_set_affinity_hint() with irq_set_affinity() which only applies the affinity for the interrupts. Signed-off-by: Nitesh Narayan Lal --- drivers/scsi/lpfc/lpfc_init.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 5983e05b648f..8a16bacb8c93 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -11455,7 +11455,7 @@ lpfc_irq_set_aff(struct lpfc_hba_eq_hdl *eqhdl, unsigned int cpu) cpumask_clear(&eqhdl->aff_mask); cpumask_set_cpu(cpu, &eqhdl->aff_mask); irq_set_status_flags(eqhdl->irq, IRQ_NO_BALANCING); - irq_set_affinity_hint(eqhdl->irq, &eqhdl->aff_mask); + irq_set_affinity(eqhdl->irq, &eqhdl->aff_mask); } /** @@ -11744,7 +11744,6 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba) for (--index; index >= 0; index--) { eqhdl = lpfc_get_eq_hdl(index); lpfc_irq_clear_aff(eqhdl); - irq_set_affinity_hint(eqhdl->irq, NULL); free_irq(eqhdl->irq, eqhdl); } @@ -11905,7 +11904,6 @@ lpfc_sli4_disable_intr(struct lpfc_hba *phba) for (index = 0; index < phba->cfg_irq_chann; index++) { eqhdl = lpfc_get_eq_hdl(index); lpfc_irq_clear_aff(eqhdl); - irq_set_affinity_hint(eqhdl->irq, NULL); free_irq(eqhdl->irq, eqhdl); } } else {