Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 20:22:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

iommu: Add iommu_error class event to iommu trace

Browse Source 
iommu_error class event can be enabled to trigger when an iommu
error occurs. This trace event is intended to be called to report the
error information. Trace information includes driver name, device name,
iova, and flags.

iommu_error:io_page_fault

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
This commit is contained in:
Shuah Khan 2013-09-24 15:21:19 -06:00 committed by Joerg Roedel
parent 3a50639ca4
commit 04fa2f7f83
2 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/iommu/iommu-traces.c
View File

@ -22,3 +22,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(detach_device_from_domain);
/* iommu_map_unmap */
EXPORT_TRACEPOINT_SYMBOL_GPL(map);
EXPORT_TRACEPOINT_SYMBOL_GPL(unmap);
/* iommu_error */
EXPORT_TRACEPOINT_SYMBOL_GPL(io_page_fault);

33
include/trace/events/iommu.h
View File

@ -123,6 +123,39 @@ DEFINE_EVENT_PRINT(iommu_map_unmap, unmap,
__entry->iova, __entry->size
)
);
DECLARE_EVENT_CLASS(iommu_error,
TP_PROTO(struct device *dev, unsigned long iova, int flags),
TP_ARGS(dev, iova, flags),
TP_STRUCT__entry(
__string(device, dev_name(dev))
__string(driver, dev_driver_string(dev))
__field(u64, iova)
__field(int, flags)
),
TP_fast_assign(
__assign_str(device, dev_name(dev));
__assign_str(driver, dev_driver_string(dev));
__entry->iova = iova;
__entry->flags = flags;
),
TP_printk("IOMMU:%s %s iova=0x%016llx flags=0x%04x",
__get_str(driver), __get_str(device),
__entry->iova, __entry->flags
)
);
DEFINE_EVENT(iommu_error, io_page_fault,
TP_PROTO(struct device *dev, unsigned long iova, int flags),
TP_ARGS(dev, iova, flags)
);
#endif /* _TRACE_IOMMU_H */
/* This part must be outside protection */