From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELtAQFNNLAfGKpOmJfFuFzFFeAtyiNF8u0KfTBSADXVcA2XQ2vXJxZzNEt0qflMRnCBp0eTZ ARC-Seal: i=1; a=rsa-sha256; t=1521774613; cv=none; d=google.com; s=arc-20160816; b=NnGsTm3jc21niPthlYcCxUODsgHmky40TQmcihNQjvYGqxpi1yng9LSsPXFb6HbnXG g9NKR+usB2vpvbgSU5rrcwlB47i6rzlrRNxsWithn5HOuPc1mlsQtjOC4fHcIiHhOhGx P0pkLQmfutOQBv2LWQEIBDsab7bLWu5bdIxVVRIXgvAowtevtYttbJaHbsxEYhJkXGLL wyOpGlxdb++mgHrhRuHm/8pboxXMCapVAfrFlGrf7MdhjnvZeBv2YRpu1Cqs39G/MIUa 38lDOgIV1kcJwY585uCko84xbkuyxULgQ1xPUWkP1Oyd9oATTqB22iGzvtJ0kYLcL7l7 zLjw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=Xk3/mo9nttM4gdNcxVIDFCTvI0oTGjmRFAF1YEff7/4=; b=V9FWXbqb4g0Le+JUnZ0635j7zWXb8UEN6fA/Ns2LLGjkCnYhgsReh8Hf8hlQAKdJ1N PzqMBBdD8V5Pcxu63avBkj3WBuoxSKl3bUMbmbR7uyt8l0nh3Sn5nSPqXtsfdjaXVCzz +xs7/jaHRkfz+Jn+4SZs0ezd7p0kHzXAwZWVwPm7qDyK9IZ+5D01l5w3fnqydDIPsGOG nlxkyahRPRwCFwjkrfg/4mlM7+GCKmFUvxlePABVSJ28OU3o/ErTurGKwpQ8l2+lzTEr H8X7RNg59r13Ox+sug/P13B7m8p43wRQ+5oXdCOQtL/2piQXTm2PIBewo4kUU8Hdrs7U 1/Jw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of jacob.jun.pan@linux.intel.com designates 134.134.136.65 as permitted sender) smtp.mailfrom=jacob.jun.pan@linux.intel.com Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of jacob.jun.pan@linux.intel.com designates 134.134.136.65 as permitted sender) smtp.mailfrom=jacob.jun.pan@linux.intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,348,1517904000"; d="scan'208";a="26316054" From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Jean-Philippe Brucker , Greg Kroah-Hartman , Rafael Wysocki Cc: "Liu, Yi L" , Lan Tianyu , "Tian, Kevin" , Raj Ashok , Alex Williamson , Jean Delvare , "Christoph Hellwig" , Jacob Pan Subject: [PATCH v4 22/22] iommu: use sva invalidate and device fault trace event Date: Thu, 22 Mar 2018 20:12:14 -0700 Message-Id: <1521774734-48433-23-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521774734-48433-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1521774734-48433-1-git-send-email-jacob.jun.pan@linux.intel.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1595696337526958070?= X-GMAIL-MSGID: =?utf-8?q?1595696337526958070?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: For performance and debugging purposes, these trace events help analyzing device faults and passdown invalidations 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 --- drivers/iommu/iommu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 1e74944..e5fc345 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -979,6 +979,7 @@ int iommu_report_device_fault(struct device *dev, struct iommu_fault_event *evt) mutex_unlock(&fparam->lock); } ret = fparam->handler(evt, fparam->data); + trace_dev_fault(dev, evt); done_unlock: mutex_unlock(&dev->iommu_param->lock); return ret; @@ -1547,6 +1548,7 @@ int iommu_sva_invalidate(struct iommu_domain *domain, return -ENODEV; ret = domain->ops->sva_invalidate(domain, dev, inv_info); + trace_sva_invalidate(dev, inv_info); return ret; } @@ -1584,6 +1586,7 @@ int iommu_page_response(struct device *dev, if (evt->pasid == msg->pasid && msg->page_req_group_id == evt->page_req_group_id) { msg->private_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