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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 989C0C28EBD for ; Sun, 9 Jun 2019 13:42:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E23420868 for ; Sun, 9 Jun 2019 13:42:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729348AbfFINmg (ORCPT ); Sun, 9 Jun 2019 09:42:36 -0400 Received: from mga11.intel.com ([192.55.52.93]:32101 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728864AbfFINlS (ORCPT ); Sun, 9 Jun 2019 09:41:18 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Jun 2019 06:41:17 -0700 X-ExtLoop1: 1 Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga003.jf.intel.com with ESMTP; 09 Jun 2019 06:41:17 -0700 From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Eric Auger , Alex Williamson , Jean-Philippe Brucker Cc: "Yi Liu" , "Tian, Kevin" , Raj Ashok , "Christoph Hellwig" , "Lu Baolu" , Andriy Shevchenko , Jacob Pan Subject: [PATCH v4 07/22] iommu: Use device fault trace event Date: Sun, 9 Jun 2019 06:44:07 -0700 Message-Id: <1560087862-57608-8-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1560087862-57608-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1560087862-57608-1-git-send-email-jacob.jun.pan@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For performance and debugging purposes, these trace events help analyzing device faults that interact with IOMMU subsystem. E.g. IOMMU:0000:00:0a.0 type=2 reason=0 addr=0x00000000007ff000 pasid=1 group=1 last=0 prot=1 Signed-off-by: Jacob Pan [JPB: removed invalidate event, that will be added later] Signed-off-by: Jean-Philippe Brucker --- drivers/iommu/iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 64e87d5..166adb8 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1032,6 +1032,7 @@ int iommu_report_device_fault(struct device *dev, struct iommu_fault_event *evt) } ret = fparam->handler(evt, fparam->data); + trace_dev_fault(dev, &evt->fault); done_unlock: mutex_unlock(¶m->lock); return ret; @@ -1604,6 +1605,7 @@ int iommu_page_response(struct device *dev, if (evt->fault.prm.pasid == msg->pasid && evt->fault.prm.grpid == msg->grpid) { msg->iommu_data = evt->iommu_private; + trace_dev_page_response(dev, msg); ret = domain->ops->page_response(dev, msg); list_del(&evt->list); kfree(evt); -- 2.7.4