提交 2e117604 编写于 作者: J Joerg Roedel

AMD IOMMU: add Kconfig entry for statistic collection code

Impact: adds new Kconfig entry
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
上级 a4e267c8
......@@ -586,6 +586,16 @@ config AMD_IOMMU
your BIOS for an option to enable it or if you have an IVRS ACPI
table.
config AMD_IOMMU_STATS
bool "Export AMD IOMMU statistics to debugfs"
depends on AMD_IOMMU
select DEBUG_FS
help
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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