From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx49Wxcwr9WSzOL41amxGc+yyCMXZOnQ8zzkUIbhCMcKezOMlHK6r/yAoKv04e49xtxv1g2SX ARC-Seal: i=1; a=rsa-sha256; t=1523915205; cv=none; d=google.com; s=arc-20160816; b=ypjb8EWXpakBYcpqmmDsT0NroXv9VuHm0DwZdbKtPg30J9BsCxlFsHKnzSvh3yGUKK 7NYwjSrkZ5X9Bt3x1t2wn8F63pZKleaNAMHJ6N47y20C/v80ViFxjIrxhdfn3nLyYowI /eqAIhzz962SCO4q11BR0Wm1twn87z7Lys+9hPwLB5XhM3R6B9qFC5blXq7wNJeKa0Aq 5JD/BpKy4ulBADujMvRbYwI9Z4pIlZpe/OKNGHF3ueAdwKxc+Ges1MyX0EJbKgz6FEeH YQQUONgcpaY5DJOOSg9rVxbtboBLhvmldDgWRyvRxgZc36ZhfLCSDGMLqYCrvzKPlnvo U+UA== 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=AWyUTf89RtmcPXz7J2ozMdOV1ro7FaVNGacLH2xpQ+Q=; b=Kwgpw6aJ+iy/JCcS1Vw3SELBdJbyl+W+l+T1WNcodB4OeYHhEYgNLPCH05e29TJrAZ ScP8oG0lJ9eqZRI9SeOx2p4tYjpyp7j9nC3DSWG0XjUZqRww/V0yW8/IDNE5NbIQ168A aCjHkD9FoAdKKeiZ5YTN3NVLMCZw8ZwTUOqsWahr43aXuPkeU3KC6UpTwa5p2zPwxsy+ wKTJTMr5icnk392aENrad4u6rxBLLYSixh8MgUgPFb696Bc29ZHYI+bPsnM0opUvd96E WaFY5PjzUabSgSXKSGiVCnySANknujJSzaR+8DkAAPA8Quy1VHfLV6FV/4IGHsYxi9sM x2OQ== 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 134.134.136.31 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 134.134.136.31 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="5.48,460,1517904000"; d="scan'208";a="34740203" From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Greg Kroah-Hartman , Alex Williamson , Jean-Philippe Brucker Cc: Rafael Wysocki , "Liu, Yi L" , "Tian, Kevin" , Raj Ashok , Jean Delvare , "Christoph Hellwig" , "Lu Baolu" , Jacob Pan Subject: [PATCH v4 22/22] iommu: use sva invalidate and device fault trace event Date: Mon, 16 Apr 2018 14:49:11 -0700 Message-Id: <1523915351-54415-23-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1523915351-54415-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1523915351-54415-1-git-send-email-jacob.jun.pan@linux.intel.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1597940911067755677?= X-GMAIL-MSGID: =?utf-8?q?1597940911067755677?= 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 f6512692..e2090d2 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