From: Shuah Khan Date: Thu, 15 Aug 2013 17:59:23 +0000 (-0600) Subject: iommu: Add event tracing feature to iommu X-Git-Tag: v3.13-rc1~79^2~9 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f6db1717235bd45d265766dad53c10d30899d41;p=pandora-kernel.git iommu: Add event tracing feature to iommu Add tracing feature to iommu 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. Trace information includes iova, physical address (map event only), and size. iommu:map iommu:unmap Signed-off-by: Shuah Khan Signed-off-by: Joerg Roedel --- Reading git-diff-tree failed