From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759310Ab3HOR74 (ORCPT ); Thu, 15 Aug 2013 13:59:56 -0400 Received: from qmta01.emeryville.ca.mail.comcast.net ([76.96.30.16]:43279 "EHLO qmta01.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753467Ab3HOR7z (ORCPT ); Thu, 15 Aug 2013 13:59:55 -0400 From: Shuah Khan To: joro@8bytes.org, alex.williamson@redhat.com, Varun.Sethi@freescale.com, aik@ozlabs.ru, joe@perches.com, rostedt@goodmis.org, fweisbec@gmail.com, mingo@redhat.com, tony@atomide.com, ohad@wizery.com, andreas.herrmann@calxeda.com, will.deacon@arm.com Cc: Shuah Khan , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, shuahkhan@gmail.com Subject: [PATCH 0/7] iommu: Add event tracing feature to iommu Date: Thu, 15 Aug 2013 11:59:22 -0600 Message-Id: X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch set adds tracing feature to iommu driver to report various iommu events. Classes iommu_group, iommu_device, and iommu_map_unmap are defined. iommu_group class events can be enabled to trigger when devices get added to and removed from an iommu group. Trace information includes iommu group id and device name. iommu:add_device_to_group iommu:remove_device_from_group iommu_device class events can be enabled to trigger when devices are attached to and detached from a domain. Trace information includes device name. iommu:attach_device_to_domain iommu:detach_device_from_domain iommu_map_unmap class events can be enabled to trigger when iommu map and unmap iommu ops complete. Trace information includes iova, physical address (map event only), and size. iommu:map iommu:unmap In addition to defining the new traces, iommu driver is changed to call trace events. Changes since the last patch set: - Addressed feedback: removed iommu_amd_event class. - Generated patch with the new trace event defines. - Generated individual patches for each trace event call in iommu driver Shuah Khan (7): iommu: Add event tracing feature to iommu iommu: Change iommu driver to call add_device_to_group trace event iommu: Change iommu driver to call remove_device_to_group trace event iommu: Change iommu driver to call attach_device_to_domain trace event iommu: Change iommu driver to call detach_device_to_domain trace event iommu: Change iommu driver to call map trace event iommu: Change iommu driver to call unmap trace event drivers/iommu/Makefile | 1 + drivers/iommu/iommu-traces.c | 24 ++++++++ drivers/iommu/iommu.c | 15 ++++- include/trace/events/iommu.h | 129 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 168 insertions(+), 1 deletion(-) create mode 100644 drivers/iommu/iommu-traces.c create mode 100644 include/trace/events/iommu.h -- 1.7.10.4