Path: csiph.com!feeder.erje.net!1.us.feeder.erje.net!newsfeed.fsmpi.rwth-aachen.de!newsfeed.straub-nv.de!news.unit0.net!news.panservice.it!bofh.it!news.nic.it!robomod From: Joerg Roedel Newsgroups: linux.kernel Subject: [PATCH 17/20] iommu/amd: Use dev_data->domain in get_domain() Date: Fri, 08 Jul 2016 13:50:02 +0200 Message-ID: References: Dkim-Signature: v=1; a=rsa-sha256; c=simple/simple; d=8bytes.org; s=mail-1; t=1467978325; bh=vqUkFwhZd9eooEkk2lrrv8QmOvl9Rg9Fnw8kAVTovPE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TbYU2mXj2Og+JJeSml/nZfzHfOmNzuZWdBYZB7VO1+xV5+794ooLahWQe8280LAkd Rla9R6poJrEbJJdvoMEdCjhgkrnbTRA2nMniWMPqeKoQS+MHRhl48PD4D0IYlaD3Fk 8YnOvr0bngoCyif5e52+rKEp7LvQexUCWlCGQnYLyhJR5CBKZyheRKWIWw1VSz5xPy /2gVj6ctVQa36osJ4crdTx7bHV05kVJwp5HyGGwncAuNs41yvTU/VL+N4MmGYV8/3r BlUK1jwUq9XfSryiPkjM72bjd1raCBKwkbLBa6Rs8zYdC0oRyqY8d6aEyflOKNElBq P2IQzoJzYR13w== X-Mailer: git-send-email 1.9.1 Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 34 Organization: linux.* mail to news gateway X-Original-Cc: linux-kernel@vger.kernel.org, Suravee Suthikulpanit , Vincent.Wan@amd.com, Joerg Roedel X-Original-Date: Fri, 8 Jul 2016 13:45:08 +0200 X-Original-Message-ID: <1467978311-28322-18-git-send-email-joro@8bytes.org> X-Original-References: <1467978311-28322-1-git-send-email-joro@8bytes.org> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1439349 From: Joerg Roedel Using the cached value is much more efficient than calling into the IOMMU core code. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index e5f8e7f..4b17148 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2223,16 +2223,11 @@ static void queue_add(struct dma_ops_domain *dma_dom, static struct protection_domain *get_domain(struct device *dev) { struct protection_domain *domain; - struct iommu_domain *io_domain; if (!check_device(dev)) return ERR_PTR(-EINVAL); - io_domain = iommu_get_domain_for_dev(dev); - if (!io_domain) - return NULL; - - domain = to_pdomain(io_domain); + domain = get_dev_data(dev)->domain; if (!dma_ops_domain(domain)) return ERR_PTR(-EBUSY); -- 1.9.1