forked from Minki/linux
7f6db17172
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 <shuah.kh@samsung.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
25 lines
569 B
C
25 lines
569 B
C
/*
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* iommu trace points
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*
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* Copyright (C) 2013 Shuah Khan <shuah.kh@samsung.com>
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*
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*/
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#include <linux/string.h>
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#include <linux/types.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/iommu.h>
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/* iommu_group_event */
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EXPORT_TRACEPOINT_SYMBOL_GPL(add_device_to_group);
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EXPORT_TRACEPOINT_SYMBOL_GPL(remove_device_from_group);
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/* iommu_device_event */
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EXPORT_TRACEPOINT_SYMBOL_GPL(attach_device_to_domain);
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EXPORT_TRACEPOINT_SYMBOL_GPL(detach_device_from_domain);
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/* iommu_map_unmap */
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EXPORT_TRACEPOINT_SYMBOL_GPL(map);
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EXPORT_TRACEPOINT_SYMBOL_GPL(unmap);
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