iommu: Log iova range in map/unmap trace events

In case of an iommu page fault, the faulting iova is logged
in trace_io_page_fault. It is therefore convenient to log
the iova range in mapping/unmapping trace events so that it
is easier to see if the faulting iova was recently in any of
those ranges.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Link: https://lore.kernel.org/r/20211104071620.27290-1-dafna.hirschfeld@collabora.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: Dafna Hirschfeld

include/trace/events/iommu.h

@@ -101,8 +101,9 @@ TRACE_EVENT(map,
 		__entry->size = size;
 	),
 
-	TP_printk("IOMMU: iova=0x%016llx paddr=0x%016llx size=%zu",
-			__entry->iova, __entry->paddr, __entry->size
+	TP_printk("IOMMU: iova=0x%016llx - 0x%016llx paddr=0x%016llx size=%zu",
+		  __entry->iova, __entry->iova + __entry->size, __entry->paddr,
+		  __entry->size
 	)
 );
 
@@ -124,8 +125,9 @@ TRACE_EVENT(unmap,
 		__entry->unmapped_size = unmapped_size;
 	),
 
-	TP_printk("IOMMU: iova=0x%016llx size=%zu unmapped_size=%zu",
-			__entry->iova, __entry->size, __entry->unmapped_size
+	TP_printk("IOMMU: iova=0x%016llx - 0x%016llx size=%zu unmapped_size=%zu",
+		  __entry->iova, __entry->iova + __entry->size,
+		  __entry->size, __entry->unmapped_size
 	)
 );