From 7f6db1717235bd45d265766dad53c10d30899d41 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Thu, 15 Aug 2013 11:59:23 -0600 Subject: 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 --- include/trace/events/iommu.h | 129 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 include/trace/events/iommu.h (limited to 'include/trace') diff --git a/include/trace/events/iommu.h b/include/trace/events/iommu.h new file mode 100644 index 000000000000..86bcc5a9fedc --- /dev/null +++ b/include/trace/events/iommu.h @@ -0,0 +1,129 @@ +/* + * iommu trace points + * + * Copyright (C) 2013 Shuah Khan + * + */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM iommu + +#if !defined(_TRACE_IOMMU_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_IOMMU_H + +#include +#include + +struct device; + +DECLARE_EVENT_CLASS(iommu_group_event, + + TP_PROTO(int group_id, struct device *dev), + + TP_ARGS(group_id, dev), + + TP_STRUCT__entry( + __field(int, gid) + __string(device, dev_name(dev)) + ), + + TP_fast_assign( + __entry->gid = group_id; + __assign_str(device, dev_name(dev)); + ), + + TP_printk("IOMMU: groupID=%d device=%s", + __entry->gid, __get_str(device) + ) +); + +DEFINE_EVENT(iommu_group_event, add_device_to_group, + + TP_PROTO(int group_id, struct device *dev), + + TP_ARGS(group_id, dev) + +); + +DEFINE_EVENT(iommu_group_event, remove_device_from_group, + + TP_PROTO(int group_id, struct device *dev), + + TP_ARGS(group_id, dev) +); + +DECLARE_EVENT_CLASS(iommu_device_event, + + TP_PROTO(struct device *dev), + + TP_ARGS(dev), + + TP_STRUCT__entry( + __string(device, dev_name(dev)) + ), + + TP_fast_assign( + __assign_str(device, dev_name(dev)); + ), + + TP_printk("IOMMU: device=%s", __get_str(device) + ) +); + +DEFINE_EVENT(iommu_device_event, attach_device_to_domain, + + TP_PROTO(struct device *dev), + + TP_ARGS(dev) +); + +DEFINE_EVENT(iommu_device_event, detach_device_from_domain, + + TP_PROTO(struct device *dev), + + TP_ARGS(dev) +); + +DECLARE_EVENT_CLASS(iommu_map_unmap, + + TP_PROTO(unsigned long iova, phys_addr_t paddr, size_t size), + + TP_ARGS(iova, paddr, size), + + TP_STRUCT__entry( + __field(u64, iova) + __field(u64, paddr) + __field(int, size) + ), + + TP_fast_assign( + __entry->iova = iova; + __entry->paddr = paddr; + __entry->size = size; + ), + + TP_printk("IOMMU: iova=0x%016llx paddr=0x%016llx size=0x%x", + __entry->iova, __entry->paddr, __entry->size + ) +); + +DEFINE_EVENT(iommu_map_unmap, map, + + TP_PROTO(unsigned long iova, phys_addr_t paddr, size_t size), + + TP_ARGS(iova, paddr, size) +); + +DEFINE_EVENT_PRINT(iommu_map_unmap, unmap, + + TP_PROTO(unsigned long iova, phys_addr_t paddr, size_t size), + + TP_ARGS(iova, paddr, size), + + TP_printk("IOMMU: iova=0x%016llx size=0x%x", + __entry->iova, __entry->size + ) +); +#endif /* _TRACE_IOMMU_H */ + +/* This part must be outside protection */ +#include -- cgit v1.2.3-59-g8ed1b