db8614d35b
Currently map and unmap are implemented as events under a common trace class declaration. The common class forces trace_unmap() to require a bogus physical address argument that it doesn't use. Changing unmap to report unmapped size will provide useful information for debugging. Remove common map_unmap trace class and change map and unmap into separate events as opposed to events under the same class to allow for differences in the reporting information. In addition, map and unmap are changed to handle size value as size_t instead of int to match the passed size value and avoid overflow. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Suggested-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
168 lines
3 KiB
C
168 lines
3 KiB
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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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM iommu
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#if !defined(_TRACE_IOMMU_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_IOMMU_H
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#include <linux/tracepoint.h>
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#include <linux/pci.h>
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struct device;
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DECLARE_EVENT_CLASS(iommu_group_event,
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TP_PROTO(int group_id, struct device *dev),
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TP_ARGS(group_id, dev),
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TP_STRUCT__entry(
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__field(int, gid)
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__string(device, dev_name(dev))
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),
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TP_fast_assign(
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__entry->gid = group_id;
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__assign_str(device, dev_name(dev));
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),
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TP_printk("IOMMU: groupID=%d device=%s",
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__entry->gid, __get_str(device)
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)
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);
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DEFINE_EVENT(iommu_group_event, add_device_to_group,
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TP_PROTO(int group_id, struct device *dev),
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TP_ARGS(group_id, dev)
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);
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DEFINE_EVENT(iommu_group_event, remove_device_from_group,
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TP_PROTO(int group_id, struct device *dev),
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TP_ARGS(group_id, dev)
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);
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DECLARE_EVENT_CLASS(iommu_device_event,
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TP_PROTO(struct device *dev),
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TP_ARGS(dev),
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TP_STRUCT__entry(
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__string(device, dev_name(dev))
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),
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TP_fast_assign(
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__assign_str(device, dev_name(dev));
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),
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TP_printk("IOMMU: device=%s", __get_str(device)
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)
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);
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DEFINE_EVENT(iommu_device_event, attach_device_to_domain,
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TP_PROTO(struct device *dev),
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TP_ARGS(dev)
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);
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DEFINE_EVENT(iommu_device_event, detach_device_from_domain,
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TP_PROTO(struct device *dev),
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TP_ARGS(dev)
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);
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TRACE_EVENT(map,
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TP_PROTO(unsigned long iova, phys_addr_t paddr, size_t size),
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TP_ARGS(iova, paddr, size),
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TP_STRUCT__entry(
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__field(u64, iova)
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__field(u64, paddr)
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__field(size_t, size)
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),
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TP_fast_assign(
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__entry->iova = iova;
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__entry->paddr = paddr;
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__entry->size = size;
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),
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TP_printk("IOMMU: iova=0x%016llx paddr=0x%016llx size=%zu",
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__entry->iova, __entry->paddr, __entry->size
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)
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);
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TRACE_EVENT(unmap,
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TP_PROTO(unsigned long iova, size_t size, size_t unmapped_size),
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TP_ARGS(iova, size, unmapped_size),
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TP_STRUCT__entry(
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__field(u64, iova)
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__field(size_t, size)
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__field(size_t, unmapped_size)
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),
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TP_fast_assign(
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__entry->iova = iova;
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__entry->size = size;
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__entry->unmapped_size = unmapped_size;
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),
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TP_printk("IOMMU: iova=0x%016llx size=%zu unmapped_size=%zu",
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__entry->iova, __entry->size, __entry->unmapped_size
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)
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);
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DECLARE_EVENT_CLASS(iommu_error,
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TP_PROTO(struct device *dev, unsigned long iova, int flags),
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TP_ARGS(dev, iova, flags),
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TP_STRUCT__entry(
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__string(device, dev_name(dev))
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__string(driver, dev_driver_string(dev))
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__field(u64, iova)
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__field(int, flags)
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),
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TP_fast_assign(
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__assign_str(device, dev_name(dev));
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__assign_str(driver, dev_driver_string(dev));
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__entry->iova = iova;
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__entry->flags = flags;
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),
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TP_printk("IOMMU:%s %s iova=0x%016llx flags=0x%04x",
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__get_str(driver), __get_str(device),
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__entry->iova, __entry->flags
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)
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);
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DEFINE_EVENT(iommu_error, io_page_fault,
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TP_PROTO(struct device *dev, unsigned long iova, int flags),
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TP_ARGS(dev, iova, flags)
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);
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#endif /* _TRACE_IOMMU_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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