Commit 2e117604 authored by Joerg Roedel's avatar Joerg Roedel

AMD IOMMU: add Kconfig entry for statistic collection code

Impact: adds new Kconfig entry
Signed-off-by: default avatarJoerg Roedel <>
parent a4e267c8
......@@ -586,6 +586,16 @@ config AMD_IOMMU
your BIOS for an option to enable it or if you have an IVRS ACPI
bool "Export AMD IOMMU statistics to debugfs"
depends on AMD_IOMMU
select DEBUG_FS
This option enables code in the AMD IOMMU driver to collect various
statistics about whats happening in the driver and exports that
information to userspace via debugfs.
If unsure, say N.
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
def_bool y if X86_64
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