From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZqNplRu/l/jVe3gmXOlKZhGk/MWOv+Xzq6klnwJag/ht1dKx6YwQuemTxswAL6Ld1OJFQZN ARC-Seal: i=1; a=rsa-sha256; t=1526071895; cv=none; d=google.com; s=arc-20160816; b=IYZ4KcNB+E59n2+5Uqq6/TkSNGOrptgEnew+EiUL72Cm3XiMv7x2f2AgTMCZEMOtPu gTPmN4xSLHfnZLXHBT/Hw82SJVAmakVmsl+oO1S9OazFWI9a53yTWgqHrkRIkeE8CTxj lf/H1qbW0fSd5wIjWYKR+/f3X4ZZwSxaT69cpvG8tRW1mNdMjdHORhP4TNJWREImcELc g00PofNfGYNBkdEGdsUkGkIAywr2SC6wAhexBMux2kLEAR1bg+oocSVEzUp+6XHd7wks G8HCYa5X6dC7zi4hCPrveIpkoI8SkTk6XKGrPvjfpdIMp+yj0qRHYyTOhaHTl5MQgHN0 82wQ== 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=2i15vuqDOD/v/9ACO7r7FYAW+rsY05c1oRu7NPVqR2A=; b=zmsXhi1wuWP6TjThvienipOD7N8Vy7gGT4tBa3kcESE6to1EnJoNPfSwPMzkkx8x9i sFAPHPtkWyjrvqTRIelSsaApaPU4CDISlKRTTgrXXLRTvi4vnRnxIUsZ5oSXjGfO06xM iSwoOMmhCntNe2OJITUP9m3Yiof9gtT4l5UXDyNz9Rxe7yd54JX0S1f7nG60/3p34Pqt vmkq+81PGgAGM8KX6cX76f39KMq54DDG9Alr+fp6GTzkQ9wMKAhX7vpGCCV3713+rXtQ 8xoXmJJ/AsjF9YLax9Olg2tAQz4wpOKxnzZImOEyEPWK9pl1a5PhY+XWRM3++M0mNkfO jFFQ== 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="5.49,390,1520924400"; d="scan'208";a="41104805" 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 v5 23/23] iommu: use sva invalidate and device fault trace event Date: Fri, 11 May 2018 13:54:15 -0700 Message-Id: <1526072055-86990-24-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1526072055-86990-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1526072055-86990-1-git-send-email-jacob.jun.pan@linux.intel.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1600202364101861633?= X-GMAIL-MSGID: =?utf-8?q?1600202364101861633?= 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 1f2f49e..0108970 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1006,6 +1006,7 @@ 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; @@ -1574,6 +1575,7 @@ 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; } @@ -1611,6 +1613,7 @@ 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