From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 28A96F9E9 for ; Tue, 24 Oct 2023 08:42:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="WFC5YSJw" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1698136921; x=1729672921; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CyUeeVJUyOdoCnKoCMDJ4OfDnN41FQE7poIYURZrFJw=; b=WFC5YSJwto8Otm7vZrKlM56sKOwysx05aXa3uGiJxIfzRL0SxUoZoDt1 PhAG8Q49mGuw7+00CP3JeSnG61iMRWfVRQB8Gey1x2bP5ctrKS3gk+OpI HFV1GSj01X48UKvGukayglbBvlzBQOX+lekhJU0SLwH8BYqSKPv4y9w9S 6tL5RBzDxPmkRbAOY04o2S7fcUwwr8VhANLrrGcC+JP/4ghmUubkHw7Xs qX/xHQJa9AIcvPL/SLTOZv6WGjkQv+1UuquDVZCBqILreiXQZQLGS9gDC mxkRRUPS+A9Oqb8xQrE0NwH34gpt9ULRyVhq+usXFGe4qKFA+y8fFwOhe w==; X-IronPort-AV: E=McAfee;i="6600,9927,10872"; a="389860365" X-IronPort-AV: E=Sophos;i="6.03,247,1694761200"; d="scan'208";a="389860365" 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> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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