From: Shuah Khan Subject: [PATCH 0/7] iommu: Add event tracing feature to iommu Date: Thu, 15 Aug 2013 11:59:22 -0600 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org, alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org, aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org, joe-6d6DIl74uiNBDgjK7y7TUQ@public.gmane.org, rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org, fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org, ohad-Ix1uc/W3ht7QT0dZR+AlfA@public.gmane.org, andreas.herrmann-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org Cc: Shuah Khan , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, shuahkhan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org List-Id: iommu@lists.linux-foundation.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