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From: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
To: iommu@lists.linux-foundation.org
Cc: kernel@collabora.com, will@kernel.org
Subject: [PATCH] iommu: log iova range in map/unmap trace events
Date: Thu,  4 Nov 2021 09:16:20 +0200	[thread overview]
Message-ID: <20211104071620.27290-1-dafna.hirschfeld@collabora.com> (raw)

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>
---
 include/trace/events/iommu.h | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/include/trace/events/iommu.h b/include/trace/events/iommu.h
index 72b4582322ff..29096fe12623 100644
--- a/include/trace/events/iommu.h
+++ b/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
 	)
 );
 
-- 
2.17.1

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             reply	other threads:[~2021-11-04  7:16 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-04  7:16 Dafna Hirschfeld [this message]
2021-12-06 11:00 ` [PATCH] iommu: log iova range in map/unmap trace events Joerg Roedel

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