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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9515AC25B47 for ; Tue, 24 Oct 2023 08:42:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233941AbjJXImH (ORCPT ); Tue, 24 Oct 2023 04:42:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233804AbjJXImC (ORCPT ); Tue, 24 Oct 2023 04:42:02 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12B83128; Tue, 24 Oct 2023 01:42:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1698136920; x=1729672920; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CyUeeVJUyOdoCnKoCMDJ4OfDnN41FQE7poIYURZrFJw=; b=XqjFE8bDrNJOQr+ER6l5cEh9vS5rgGqbYdKAeshAc/6fqN9nHUGAfKH0 wHg7B130kkkWcgJabA2ERqvmWsxglsTy6jrBGFDNUPcZw8zWiKDCcOcmx GaugJB1Yn7M9BlXMnBBzqK4cLPad8GJ62hp8Rg8nT20sIKAB1cf6Wrn3a Rfyxb9ND9LQ1N6VR3Nb3WwHbi/eC94nuaAhBKluPsXdLiltQDQ9CGZaRK Hveve7+W8Xco80b8J913+ZRBwsKhto47DDSFpPz1QDzFF33J5VT+sQWJ8 11SiofG6hxBnhMQifzB+VbMpLbN8PGruxPJATz8747gk9weEvF8BGeyWt Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10872"; a="389860364" X-IronPort-AV: E=Sophos;i="6.03,247,1694761200"; d="scan'208";a="389860364" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Oct 2023 01:41:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10872"; a="849062190" X-IronPort-AV: E=Sophos;i="6.03,247,1694761200"; d="scan'208";a="849062190" Received: from b49691a74c3c.jf.intel.com ([10.165.59.100]) by FMSMGA003.fm.intel.com with ESMTP; 24 Oct 2023 01:41:56 -0700 From: Huang Jiaqing To: joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, dwmw2@infradead.org, baolu.lu@linux.intel.com, linux-kernel@vger.kernel.org, iommu@lists.linux.dev Cc: jacob.jun.pan@linux.intel.com, kevin.tian@intel.com, yi.y.sun@intel.com, kvm@vger.kernel.org, jiaqing.huang@intel.com Subject: [PATCH 2/2] iommu/vt-d: Adopt new helper for looking up pci device Date: Tue, 24 Oct 2023 01:41:24 -0700 Message-Id: <20231024084124.11155-2-jiaqing.huang@intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20231024084124.11155-1-jiaqing.huang@intel.com> References: <20231024084124.11155-1-jiaqing.huang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adopt the new iopf_queue_find_pdev func() to look up PCI device for better efficiency and avoid the CPU stuck issue with parallel heavy dsa_test. Signed-off-by: Huang Jiaqing --- drivers/iommu/intel/svm.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c index 659de9c16024..0f1018b76557 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -672,7 +672,7 @@ static irqreturn_t prq_event_thread(int irq, void *d) if (unlikely(req->lpig && !req->rd_req && !req->wr_req)) goto prq_advance; - pdev = pci_get_domain_bus_and_slot(iommu->segment, + pdev = iopf_queue_find_pdev(iommu->iopf_queue, PCI_BUS_NUM(req->rid), req->rid & 0xff); /* @@ -688,7 +688,6 @@ static irqreturn_t prq_event_thread(int irq, void *d) trace_prq_report(iommu, &pdev->dev, req->qw_0, req->qw_1, req->priv_data[0], req->priv_data[1], iommu->prq_seq_number++); - pci_dev_put(pdev); prq_advance: head = (head + sizeof(*req)) & PRQ_RING_MASK; } -- 2.31.1