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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-12-11 19:00:12 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-03 14:11:57 +0100 |
| commit | 2e117604a4e8f3f9cee4aec3373b0382159e152a (patch) | |
| tree | e0691ee22ff5ff11fa1a6d2aefb4b1dccace62d6 /arch/x86/Kconfig | |
| parent | a4e267c88b4acfc87ff2ab0cc8e9509878e9aaba (diff) | |
| download | lwn-2e117604a4e8f3f9cee4aec3373b0382159e152a.tar.gz lwn-2e117604a4e8f3f9cee4aec3373b0382159e152a.zip | |
AMD IOMMU: add Kconfig entry for statistic collection code
Impact: adds new Kconfig entry
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 249d1e0824b5..f9998d276eb3 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -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 |