On Fri, Jan 26, 2018 at 05:52:15PM -0600, Gary R Hook wrote:
> Create the basic debugfs functions. Expose a count of IOMMU device
> table entries that appear to be in use.
>
> Signed-off-by: Gary R Hook <gary.h...@amd.com>
> ---
> drivers/iommu/Kconfig | 9 +++
> drivers/iommu/Makefile | 2 -
> drivers/iommu/amd_iommu_debugfs.c | 112
> +++++++++++++++++++++++++++++++++++++
> drivers/iommu/amd_iommu_init.c | 7 ++
> drivers/iommu/amd_iommu_proto.h | 6 ++
> drivers/iommu/amd_iommu_types.h | 3 +
> 6 files changed, 136 insertions(+), 3 deletions(-)
> create mode 100644 drivers/iommu/amd_iommu_debugfs.c
>
> diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
> index f3a21343e636..7753989b6be7 100644
> --- a/drivers/iommu/Kconfig
> +++ b/drivers/iommu/Kconfig
> @@ -135,6 +135,15 @@ config AMD_IOMMU_V2
> hardware. Select this option if you want to use devices that support
> the PCI PRI and PASID interface.
>
> +config AMD_IOMMU_DEBUG
> + bool "Expose AMD IOMMU internals in DebugFS"
> + depends on AMD_IOMMU && DEBUG_FS
> + default n
> + help
> + With this option you can enable access to AMD IOMMU registers and
> + data structures through debugfs. Select this to see information
> + about the internal state of the device.
> +
> # Intel IOMMU support
> config DMAR_TABLE
> bool
> diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile
> index 1fb695854809..d9e9ed5f6cfc 100644
> --- a/drivers/iommu/Makefile
> +++ b/drivers/iommu/Makefile
> @@ -9,7 +9,7 @@ obj-$(CONFIG_IOMMU_IO_PGTABLE_LPAE) += io-pgtable-arm.o
> obj-$(CONFIG_IOMMU_IOVA) += iova.o
> obj-$(CONFIG_OF_IOMMU) += of_iommu.o
> obj-$(CONFIG_MSM_IOMMU) += msm_iommu.o
> -obj-$(CONFIG_AMD_IOMMU) += amd_iommu.o amd_iommu_init.o
> +obj-$(CONFIG_AMD_IOMMU) += amd_iommu.o amd_iommu_init.o amd_iommu_debugfs.o
That looks like it needs to be:
obj-$(CONFIG_AMD_IOMMU_DEBUG) += amd_iommu_debugfs.o
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
